danfoss scroll compressors dsh 090 to 485 single and manifold€¦ · dsh240 20.0 227.60 13.89 39.6...
TRANSCRIPT
Danfoss scroll compressors DSH 090 to 485Single and manifold50Hz - 60Hz - R410A - R452B
Application guidelines
wwwdanfosscom
Content
GENERAL INFORMATION 4
PRODUCT INFORMATION 5
Features5Overview 5How do IDVs work 5
Compressor model designation 6Nomenclature 6
Technical specifications 750-60 Hz data Single compressor 7Performances 50-60 Hz R410A Single compressor 7Performances 50-60 Hz R452B Single compressor 8Tandem and trio performances 8
Dimensions 9Single compressors 9Connection Details 10Tandem assemblies 11Trio assemblies 13
Electrical data connections and wiring 14Motor voltage 14Wiring connections 14IP rating 16Terminal box temperature 16Three phase electrical characteristics 16Motor protection 17
Approval and certificates 19Low voltage directive 19Machines directive 19Pressure equipment directive 19Internal free volume 19
SYSTEM DESIGN 20
Design piping 20General requirements 20Tandem and trio requirements 21Suction washer position 22Oil equalization design 25
Design compressor mounting 27General requirements 27Single requirements27Tandem requirements 28DSH180E to DSH368E mounting 28DSH360X-424X-456X-479X-565X mounting 29DSH482 to DSH1455 mounting 29
Manage oil in the circuit 30Requirement 30System evaluation 30Test criteria and solutions 30
Manage sound and vibration 31Compressor sound radiation 31Mechanical vibrations 33Gas pulsation 33
Manage operating envelope 34Requirement 34High and low pressure protection 36Discharge temperature protection 36System evaluation 37Test criteria and solutions 37
Manage superheat 38Requirement 38System evaluation 38Test criteria and solutions 38
Manage off cycle migration 40Requirement 40System evaluation 40
Provide power supply and electrical protection 42
Wiring information 42Soft starts 45
Control logic 46Safety control logic requirements 46Cycle rate limit requirements 46Oil management logic recommendations 46Defrost logic recommendations Reversible systems 46Pump-down logic recommendations 47
Reduce moisture in the system 48Requirements 48Solutions 48
INTEGRATION INTO SYSTEM 49
Assembly line procedure 49Compressor storage 49Compressor holding charge 49Handling 49Piping assembly50System pressure test and leak detection 50Vacuum evacuation and moisture removal 51Refrigerant charging 51Dielectric strength and insulation resistance tests 51
Commissioning 52Preliminary check52Initial start-up 52System monitoring 52
ORDERING INFORMATION 53
Dismantal and disposal 53
Packaging 54
Ordering codes 55
Accessories 59
3FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
General Information
Danfoss scroll compressors are designed and manufactured according to the state of the art and to valid European and US regulations Particular emphasis has been placed on safety and reliability Related instructions are highlighted with the following icons
This icon indicates instructions to avoid safety risk
This icon indicates instructions to avoid reliability risk
The purpose of this guideline is to help customers qualify compressors in the unitYou are strongly advise to follow these instructions For any deviation from the guidelines please contact Danfoss Technical Support In any case Danfoss accepts no liability as a result of the improper integration of the compressor into the unit by the system manufacturer
R
Refrigerant
R410A is a HFC blend (R32 50 R125 50) with a zero Ozone Depletion Potential (ODP=0) and a Global Warming Potential of 1924AR5 (2088AR4) It is a near-azeotropic mixture with a temperature glide less than 02 K
With its high net refrigeration effect coupled to a high density the R410A has appeared in last decade to be the preferred refrigerant for use in commercial air conditioners and heat pumps
When choosing a refrigerant different aspects must be taken into considerationbull Legislation (now and in the future)bull Safetybull Application envelope in relation to expectedrunning conditionsbull Compressor capacity and efficiencybull Compressor manufacturer recommendations ampGuidelines
Additional points could influence the finalchoicebull Environmental considerationsbull Standardisation of refrigerants and lubricantsbull Refrigerant costbull Refrigerant availabilityThe DSH compressors can be used either with refrigerant R410A or R452B (see page 5657 modelsrsquo references which are compatible with both refrigerants)
R452B is a HFOHFC blend (R32 67 R125 7 R1234yf 26) with a zero Ozone Depletion Potential(ODP=0) and a low Global Warming Potential (GWP 676AR5 698AR4) It is a near-azeotropic mixture with a temperature glide around 1 K
R452B has very close capacities versus R410A and due to its very limited discharge temperature
difference it appears today as the best candidate for a direct drop in of R410A
R452B is classified A2L with low flammability properties Please refer to European regulations and directives about the use of refrigerant of the A2L safety group ( EN378 EN60335) Outside Europe refer to the local regulation
R410A
R452B
4 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH series scroll compressor benefit from an improved design to achieve the highest efficiency and increased life time
Features
Danfoss Intermediate Discharge Valves (IDVs) are located close to the discharge side of the compressor They reduce excessive compression of refrigerant under part-load conditions while maintaining the same cooling capacity The IDVs open when discharge pressure falls below the built-in optimization point They adapt the effort of the motor to the varying load and pressure conditions in the system thus reducing the effort of the motor and its electrical consumption and improving the systemrsquos seasonal energy efficiency
How do IDVs work
Overview
DSH090-105-120-140-161-184 DSH240-295-381-485
Intermediate discharge valves (IDVs) increase seasonal efficiency
Heat shield lowers the heat transfer between discharge and suction gas and the sound level
Internal Non Return Valve (INRV) prevents excessive leak rate from high pressure side
Lead free polymer bearings improve behavior under poor lubrication conditions
Integrated discharge gas temperature protection (DGT)
Patented motor cap for optimal motor cooling and higher resistance to liquid slugging
Organ pipe masters oil circulation in manifold configuration
Patented gas path flow with gas intake design induce higher resistance to liquid slugging
5FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model designation
Danfoss scroll compressor DSH for R410A and R452B is available as single compressor and can be assembled in tandem or trio combinations The example below presents the
compressor nomenclature which equals the technical reference as shown on the compressor nameplate Code numbers for ordering are listed in section ldquoOrdering informationrdquo
Nomenclature
Family lubricant amp refrigerantDSH Scroll POE lubricant R410A and R452B (according to version) Motor protection
A Electronic module 24V AC R410A onlyB Electronic module 110-240V R410A onlyP Electonic module 110-240V R410A and R452BX Electonic module24V AC R410A and R452BL Internal overload protector R410A and R452B
Suction and discharge connectionsA Brazed connections
Family lubricant
amp refrigerant
Nominalcapacity
Approvals Voltage Version Evolutionindex
Evolution indexA~Z
C4DSH A AB485
Motor voltage code3 200-230V3~60Hz4 380-415V3~50Hz - 460V3~60Hz for DSH240 and DSH381 380-400V3~50Hz - 460V3~60Hz7 575V3~60Hz9 for DSH090 to DSH184 380-400V3~60Hz for DSH240 to DSH485 380V3~60Hz
UL index
Nominal capacity in thousand Btuh at 60Hz ARI conditions
6 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
50-60 Hz data Single compressor
Performances 50-60 Hz R410A Single compressor
ModelNominal
tons 60 Hz Swept volume Displacement (50 Hz) Displacement (60 Hz) Oil charge Net weight
TR cm3rev cuinrev m3h cufth m3h cufth dm3 oz kg lbs
DSH090 75 884 539 154 544 186 657 30 102 58 128
DSH105 90 1035 632 180 636 218 770 33 112 64 141
DSH120 100 1169 713 203 717 246 869 33 112 64 141
DSH140 120 133 812 231 816 279 985 33 112 67 148
DSH161 130 1517 926 264 932 319 1127 33 112 69 152
DSH184 150 1703 1039 296 1045 358 1264 36 122 715 158
DSH240 200 22760 1389 396 1398 478 1688 61 206 114 251
DSH295 250 27620 1685 481 1699 580 2048 61 206 117 258
DSH381 300 34500 2105 60 2119 723 2553 61 206 162 357
DSH485 400 44260 2701 77 2719 929 3281 61 206 176 388
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 20050 68413 654 306 1046
DSH105 90 23580 80457 765 308 1052
DSH120 100 26790 91410 861 311 1062
DSH140 120 30370 103625 969 313 1069
DSH161 130 34890 119048 1103 316 1079
DSH184 150 39040 133208 1236 316 1078
DSH240 200 52730 179920 1704 309 1056
DSH295 250 64520 220149 2035 317 1082
DSH381 300 81490 278052 2621 311 1061
DSH485 400 103500 353152 3272 316 1079
60 Hz
DSH090 75 27470 93730 855 321 1096
DSH105 90 32280 110100 1001 322 1100
DSH120 100 36630 125000 1125 326 1111
DSH140 120 41510 141600 1275 326 1111
DSH161 130 47220 161100 147 321 1096
DSH184 150 53160 181400 1636 325 1109
DSH240 200 71760 244852 2246 320 1090
DSH295 250 87610 298934 2696 325 1109
DSH381 300 110300 376355 3452 320 1090
DSH485 400 141900 484177 4366 325 1109
Displacement at nominal speed 2900rpm at 50 Hz 3500rpm at 60 Hz Net weight with oil charge
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
7FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
Performances 50-60 Hz R452B Single compressor
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 19590 66902 64 305 1040
DSH105 90 23451 80090 74 318 1087
DSH120 100 26366 90045 82 322 1098
DSH140 120 30180 103070 93 324 1107
DSH161 130 34855 119035 105 331 1131
DSH184 150 38779 132437 118 329 1124
DSH240 200 52130 177873 161 323 1102
DSH295 250 63995 218359 194 330 1127
DSH381 300 78426 266615 248 316 1077
DSH485 400 101971 347935 314 325 1108
60 Hz
DSH090 75 26652 91020 83 320 1091
DSH105 90 31925 109031 96 333 1136
DSH120 100 35779 122192 108 330 1127
DSH140 120 40984 139968 124 329 1124
DSH161 130 46938 160301 138 341 1163
DSH184 150 52181 178206 157 332 1132
DSH240 200 70756 241427 214 331 1130
DSH295 250 86418 294866 255 339 1157
DSH381 300 105578 360243 329 320 1093
DSH485 400 137378 468747 417 330 1125
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
The impact of manifolding on compressor performances depends widely of the customer system itself Therefore it would be unrealistic to provide data that corresponds accurately to a particular system In first approach to support compressors selection at full load the manifold
performances can be considered as the sum of capacities of the compressors composing the manifold For better accuracy the customer should integrate the appropriate weighing coefficients according to his system very pressure drops and part load levels
Tandem and trio performances
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
8 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Single compressors
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Compressor modelD H H1 H2 L1 L2 L3
Outline drawing numbermm inch mm inch mm inch mm inch mm inch mm inch mm inch
DSH090 243 957 485 1909 235 925 451 1776 180 709 230 906 230 906
8560004
DSH105-120-140-161 243 957 542 2134 278 1094 509 2004 180201
709791 230 906 230 906 8560003
8560041
DSH184 243 957 558 2197 299 1177 524 2063 201 791 230 906 230 906 8560023
DSH240 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
8556208DSH295 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
DSH381 333 1311 726 2858 302 1187 667 2626 429 478
16891882 371 1461 371 1461
8556199 8556239
DSH485 333 1311 726 2858 302 1187 667 2626 429446
16891756 371 1461 371 1461 8556198
8556237
compressor motor codes 4 7 9 compressor motor code 3
L1L3
L2
Oslash D
HH2
H1
L2
HH2
H1
Oslash D
L3L1
9FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Connection Details
DSH090 DSH105-120-140-161-184 DSH240-295-381 DSH485
Suction connection Brazed 118 Brazed 138 Brazed 158 Brazed 158
Discharge connection Brazed 78 Brazed 78 Brazed 118 Brazed 138
Oil sight glass Threaded (118 ndash 18 UNEF)
Oil equalization connection Rotolock 134 Rotolock 214
Oil drain connection None Female frac14 Flare incorporating a Schrader valve
Low pressure gauge port (Shrader) Male frac14 Flare incorporating a Schrader valve
Outline
10 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
Content
GENERAL INFORMATION 4
PRODUCT INFORMATION 5
Features5Overview 5How do IDVs work 5
Compressor model designation 6Nomenclature 6
Technical specifications 750-60 Hz data Single compressor 7Performances 50-60 Hz R410A Single compressor 7Performances 50-60 Hz R452B Single compressor 8Tandem and trio performances 8
Dimensions 9Single compressors 9Connection Details 10Tandem assemblies 11Trio assemblies 13
Electrical data connections and wiring 14Motor voltage 14Wiring connections 14IP rating 16Terminal box temperature 16Three phase electrical characteristics 16Motor protection 17
Approval and certificates 19Low voltage directive 19Machines directive 19Pressure equipment directive 19Internal free volume 19
SYSTEM DESIGN 20
Design piping 20General requirements 20Tandem and trio requirements 21Suction washer position 22Oil equalization design 25
Design compressor mounting 27General requirements 27Single requirements27Tandem requirements 28DSH180E to DSH368E mounting 28DSH360X-424X-456X-479X-565X mounting 29DSH482 to DSH1455 mounting 29
Manage oil in the circuit 30Requirement 30System evaluation 30Test criteria and solutions 30
Manage sound and vibration 31Compressor sound radiation 31Mechanical vibrations 33Gas pulsation 33
Manage operating envelope 34Requirement 34High and low pressure protection 36Discharge temperature protection 36System evaluation 37Test criteria and solutions 37
Manage superheat 38Requirement 38System evaluation 38Test criteria and solutions 38
Manage off cycle migration 40Requirement 40System evaluation 40
Provide power supply and electrical protection 42
Wiring information 42Soft starts 45
Control logic 46Safety control logic requirements 46Cycle rate limit requirements 46Oil management logic recommendations 46Defrost logic recommendations Reversible systems 46Pump-down logic recommendations 47
Reduce moisture in the system 48Requirements 48Solutions 48
INTEGRATION INTO SYSTEM 49
Assembly line procedure 49Compressor storage 49Compressor holding charge 49Handling 49Piping assembly50System pressure test and leak detection 50Vacuum evacuation and moisture removal 51Refrigerant charging 51Dielectric strength and insulation resistance tests 51
Commissioning 52Preliminary check52Initial start-up 52System monitoring 52
ORDERING INFORMATION 53
Dismantal and disposal 53
Packaging 54
Ordering codes 55
Accessories 59
3FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
General Information
Danfoss scroll compressors are designed and manufactured according to the state of the art and to valid European and US regulations Particular emphasis has been placed on safety and reliability Related instructions are highlighted with the following icons
This icon indicates instructions to avoid safety risk
This icon indicates instructions to avoid reliability risk
The purpose of this guideline is to help customers qualify compressors in the unitYou are strongly advise to follow these instructions For any deviation from the guidelines please contact Danfoss Technical Support In any case Danfoss accepts no liability as a result of the improper integration of the compressor into the unit by the system manufacturer
R
Refrigerant
R410A is a HFC blend (R32 50 R125 50) with a zero Ozone Depletion Potential (ODP=0) and a Global Warming Potential of 1924AR5 (2088AR4) It is a near-azeotropic mixture with a temperature glide less than 02 K
With its high net refrigeration effect coupled to a high density the R410A has appeared in last decade to be the preferred refrigerant for use in commercial air conditioners and heat pumps
When choosing a refrigerant different aspects must be taken into considerationbull Legislation (now and in the future)bull Safetybull Application envelope in relation to expectedrunning conditionsbull Compressor capacity and efficiencybull Compressor manufacturer recommendations ampGuidelines
Additional points could influence the finalchoicebull Environmental considerationsbull Standardisation of refrigerants and lubricantsbull Refrigerant costbull Refrigerant availabilityThe DSH compressors can be used either with refrigerant R410A or R452B (see page 5657 modelsrsquo references which are compatible with both refrigerants)
R452B is a HFOHFC blend (R32 67 R125 7 R1234yf 26) with a zero Ozone Depletion Potential(ODP=0) and a low Global Warming Potential (GWP 676AR5 698AR4) It is a near-azeotropic mixture with a temperature glide around 1 K
R452B has very close capacities versus R410A and due to its very limited discharge temperature
difference it appears today as the best candidate for a direct drop in of R410A
R452B is classified A2L with low flammability properties Please refer to European regulations and directives about the use of refrigerant of the A2L safety group ( EN378 EN60335) Outside Europe refer to the local regulation
R410A
R452B
4 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH series scroll compressor benefit from an improved design to achieve the highest efficiency and increased life time
Features
Danfoss Intermediate Discharge Valves (IDVs) are located close to the discharge side of the compressor They reduce excessive compression of refrigerant under part-load conditions while maintaining the same cooling capacity The IDVs open when discharge pressure falls below the built-in optimization point They adapt the effort of the motor to the varying load and pressure conditions in the system thus reducing the effort of the motor and its electrical consumption and improving the systemrsquos seasonal energy efficiency
How do IDVs work
Overview
DSH090-105-120-140-161-184 DSH240-295-381-485
Intermediate discharge valves (IDVs) increase seasonal efficiency
Heat shield lowers the heat transfer between discharge and suction gas and the sound level
Internal Non Return Valve (INRV) prevents excessive leak rate from high pressure side
Lead free polymer bearings improve behavior under poor lubrication conditions
Integrated discharge gas temperature protection (DGT)
Patented motor cap for optimal motor cooling and higher resistance to liquid slugging
Organ pipe masters oil circulation in manifold configuration
Patented gas path flow with gas intake design induce higher resistance to liquid slugging
5FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model designation
Danfoss scroll compressor DSH for R410A and R452B is available as single compressor and can be assembled in tandem or trio combinations The example below presents the
compressor nomenclature which equals the technical reference as shown on the compressor nameplate Code numbers for ordering are listed in section ldquoOrdering informationrdquo
Nomenclature
Family lubricant amp refrigerantDSH Scroll POE lubricant R410A and R452B (according to version) Motor protection
A Electronic module 24V AC R410A onlyB Electronic module 110-240V R410A onlyP Electonic module 110-240V R410A and R452BX Electonic module24V AC R410A and R452BL Internal overload protector R410A and R452B
Suction and discharge connectionsA Brazed connections
Family lubricant
amp refrigerant
Nominalcapacity
Approvals Voltage Version Evolutionindex
Evolution indexA~Z
C4DSH A AB485
Motor voltage code3 200-230V3~60Hz4 380-415V3~50Hz - 460V3~60Hz for DSH240 and DSH381 380-400V3~50Hz - 460V3~60Hz7 575V3~60Hz9 for DSH090 to DSH184 380-400V3~60Hz for DSH240 to DSH485 380V3~60Hz
UL index
Nominal capacity in thousand Btuh at 60Hz ARI conditions
6 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
50-60 Hz data Single compressor
Performances 50-60 Hz R410A Single compressor
ModelNominal
tons 60 Hz Swept volume Displacement (50 Hz) Displacement (60 Hz) Oil charge Net weight
TR cm3rev cuinrev m3h cufth m3h cufth dm3 oz kg lbs
DSH090 75 884 539 154 544 186 657 30 102 58 128
DSH105 90 1035 632 180 636 218 770 33 112 64 141
DSH120 100 1169 713 203 717 246 869 33 112 64 141
DSH140 120 133 812 231 816 279 985 33 112 67 148
DSH161 130 1517 926 264 932 319 1127 33 112 69 152
DSH184 150 1703 1039 296 1045 358 1264 36 122 715 158
DSH240 200 22760 1389 396 1398 478 1688 61 206 114 251
DSH295 250 27620 1685 481 1699 580 2048 61 206 117 258
DSH381 300 34500 2105 60 2119 723 2553 61 206 162 357
DSH485 400 44260 2701 77 2719 929 3281 61 206 176 388
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 20050 68413 654 306 1046
DSH105 90 23580 80457 765 308 1052
DSH120 100 26790 91410 861 311 1062
DSH140 120 30370 103625 969 313 1069
DSH161 130 34890 119048 1103 316 1079
DSH184 150 39040 133208 1236 316 1078
DSH240 200 52730 179920 1704 309 1056
DSH295 250 64520 220149 2035 317 1082
DSH381 300 81490 278052 2621 311 1061
DSH485 400 103500 353152 3272 316 1079
60 Hz
DSH090 75 27470 93730 855 321 1096
DSH105 90 32280 110100 1001 322 1100
DSH120 100 36630 125000 1125 326 1111
DSH140 120 41510 141600 1275 326 1111
DSH161 130 47220 161100 147 321 1096
DSH184 150 53160 181400 1636 325 1109
DSH240 200 71760 244852 2246 320 1090
DSH295 250 87610 298934 2696 325 1109
DSH381 300 110300 376355 3452 320 1090
DSH485 400 141900 484177 4366 325 1109
Displacement at nominal speed 2900rpm at 50 Hz 3500rpm at 60 Hz Net weight with oil charge
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
7FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
Performances 50-60 Hz R452B Single compressor
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 19590 66902 64 305 1040
DSH105 90 23451 80090 74 318 1087
DSH120 100 26366 90045 82 322 1098
DSH140 120 30180 103070 93 324 1107
DSH161 130 34855 119035 105 331 1131
DSH184 150 38779 132437 118 329 1124
DSH240 200 52130 177873 161 323 1102
DSH295 250 63995 218359 194 330 1127
DSH381 300 78426 266615 248 316 1077
DSH485 400 101971 347935 314 325 1108
60 Hz
DSH090 75 26652 91020 83 320 1091
DSH105 90 31925 109031 96 333 1136
DSH120 100 35779 122192 108 330 1127
DSH140 120 40984 139968 124 329 1124
DSH161 130 46938 160301 138 341 1163
DSH184 150 52181 178206 157 332 1132
DSH240 200 70756 241427 214 331 1130
DSH295 250 86418 294866 255 339 1157
DSH381 300 105578 360243 329 320 1093
DSH485 400 137378 468747 417 330 1125
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
The impact of manifolding on compressor performances depends widely of the customer system itself Therefore it would be unrealistic to provide data that corresponds accurately to a particular system In first approach to support compressors selection at full load the manifold
performances can be considered as the sum of capacities of the compressors composing the manifold For better accuracy the customer should integrate the appropriate weighing coefficients according to his system very pressure drops and part load levels
Tandem and trio performances
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
8 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Single compressors
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Compressor modelD H H1 H2 L1 L2 L3
Outline drawing numbermm inch mm inch mm inch mm inch mm inch mm inch mm inch
DSH090 243 957 485 1909 235 925 451 1776 180 709 230 906 230 906
8560004
DSH105-120-140-161 243 957 542 2134 278 1094 509 2004 180201
709791 230 906 230 906 8560003
8560041
DSH184 243 957 558 2197 299 1177 524 2063 201 791 230 906 230 906 8560023
DSH240 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
8556208DSH295 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
DSH381 333 1311 726 2858 302 1187 667 2626 429 478
16891882 371 1461 371 1461
8556199 8556239
DSH485 333 1311 726 2858 302 1187 667 2626 429446
16891756 371 1461 371 1461 8556198
8556237
compressor motor codes 4 7 9 compressor motor code 3
L1L3
L2
Oslash D
HH2
H1
L2
HH2
H1
Oslash D
L3L1
9FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Connection Details
DSH090 DSH105-120-140-161-184 DSH240-295-381 DSH485
Suction connection Brazed 118 Brazed 138 Brazed 158 Brazed 158
Discharge connection Brazed 78 Brazed 78 Brazed 118 Brazed 138
Oil sight glass Threaded (118 ndash 18 UNEF)
Oil equalization connection Rotolock 134 Rotolock 214
Oil drain connection None Female frac14 Flare incorporating a Schrader valve
Low pressure gauge port (Shrader) Male frac14 Flare incorporating a Schrader valve
Outline
10 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
General Information
Danfoss scroll compressors are designed and manufactured according to the state of the art and to valid European and US regulations Particular emphasis has been placed on safety and reliability Related instructions are highlighted with the following icons
This icon indicates instructions to avoid safety risk
This icon indicates instructions to avoid reliability risk
The purpose of this guideline is to help customers qualify compressors in the unitYou are strongly advise to follow these instructions For any deviation from the guidelines please contact Danfoss Technical Support In any case Danfoss accepts no liability as a result of the improper integration of the compressor into the unit by the system manufacturer
R
Refrigerant
R410A is a HFC blend (R32 50 R125 50) with a zero Ozone Depletion Potential (ODP=0) and a Global Warming Potential of 1924AR5 (2088AR4) It is a near-azeotropic mixture with a temperature glide less than 02 K
With its high net refrigeration effect coupled to a high density the R410A has appeared in last decade to be the preferred refrigerant for use in commercial air conditioners and heat pumps
When choosing a refrigerant different aspects must be taken into considerationbull Legislation (now and in the future)bull Safetybull Application envelope in relation to expectedrunning conditionsbull Compressor capacity and efficiencybull Compressor manufacturer recommendations ampGuidelines
Additional points could influence the finalchoicebull Environmental considerationsbull Standardisation of refrigerants and lubricantsbull Refrigerant costbull Refrigerant availabilityThe DSH compressors can be used either with refrigerant R410A or R452B (see page 5657 modelsrsquo references which are compatible with both refrigerants)
R452B is a HFOHFC blend (R32 67 R125 7 R1234yf 26) with a zero Ozone Depletion Potential(ODP=0) and a low Global Warming Potential (GWP 676AR5 698AR4) It is a near-azeotropic mixture with a temperature glide around 1 K
R452B has very close capacities versus R410A and due to its very limited discharge temperature
difference it appears today as the best candidate for a direct drop in of R410A
R452B is classified A2L with low flammability properties Please refer to European regulations and directives about the use of refrigerant of the A2L safety group ( EN378 EN60335) Outside Europe refer to the local regulation
R410A
R452B
4 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH series scroll compressor benefit from an improved design to achieve the highest efficiency and increased life time
Features
Danfoss Intermediate Discharge Valves (IDVs) are located close to the discharge side of the compressor They reduce excessive compression of refrigerant under part-load conditions while maintaining the same cooling capacity The IDVs open when discharge pressure falls below the built-in optimization point They adapt the effort of the motor to the varying load and pressure conditions in the system thus reducing the effort of the motor and its electrical consumption and improving the systemrsquos seasonal energy efficiency
How do IDVs work
Overview
DSH090-105-120-140-161-184 DSH240-295-381-485
Intermediate discharge valves (IDVs) increase seasonal efficiency
Heat shield lowers the heat transfer between discharge and suction gas and the sound level
Internal Non Return Valve (INRV) prevents excessive leak rate from high pressure side
Lead free polymer bearings improve behavior under poor lubrication conditions
Integrated discharge gas temperature protection (DGT)
Patented motor cap for optimal motor cooling and higher resistance to liquid slugging
Organ pipe masters oil circulation in manifold configuration
Patented gas path flow with gas intake design induce higher resistance to liquid slugging
5FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model designation
Danfoss scroll compressor DSH for R410A and R452B is available as single compressor and can be assembled in tandem or trio combinations The example below presents the
compressor nomenclature which equals the technical reference as shown on the compressor nameplate Code numbers for ordering are listed in section ldquoOrdering informationrdquo
Nomenclature
Family lubricant amp refrigerantDSH Scroll POE lubricant R410A and R452B (according to version) Motor protection
A Electronic module 24V AC R410A onlyB Electronic module 110-240V R410A onlyP Electonic module 110-240V R410A and R452BX Electonic module24V AC R410A and R452BL Internal overload protector R410A and R452B
Suction and discharge connectionsA Brazed connections
Family lubricant
amp refrigerant
Nominalcapacity
Approvals Voltage Version Evolutionindex
Evolution indexA~Z
C4DSH A AB485
Motor voltage code3 200-230V3~60Hz4 380-415V3~50Hz - 460V3~60Hz for DSH240 and DSH381 380-400V3~50Hz - 460V3~60Hz7 575V3~60Hz9 for DSH090 to DSH184 380-400V3~60Hz for DSH240 to DSH485 380V3~60Hz
UL index
Nominal capacity in thousand Btuh at 60Hz ARI conditions
6 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
50-60 Hz data Single compressor
Performances 50-60 Hz R410A Single compressor
ModelNominal
tons 60 Hz Swept volume Displacement (50 Hz) Displacement (60 Hz) Oil charge Net weight
TR cm3rev cuinrev m3h cufth m3h cufth dm3 oz kg lbs
DSH090 75 884 539 154 544 186 657 30 102 58 128
DSH105 90 1035 632 180 636 218 770 33 112 64 141
DSH120 100 1169 713 203 717 246 869 33 112 64 141
DSH140 120 133 812 231 816 279 985 33 112 67 148
DSH161 130 1517 926 264 932 319 1127 33 112 69 152
DSH184 150 1703 1039 296 1045 358 1264 36 122 715 158
DSH240 200 22760 1389 396 1398 478 1688 61 206 114 251
DSH295 250 27620 1685 481 1699 580 2048 61 206 117 258
DSH381 300 34500 2105 60 2119 723 2553 61 206 162 357
DSH485 400 44260 2701 77 2719 929 3281 61 206 176 388
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 20050 68413 654 306 1046
DSH105 90 23580 80457 765 308 1052
DSH120 100 26790 91410 861 311 1062
DSH140 120 30370 103625 969 313 1069
DSH161 130 34890 119048 1103 316 1079
DSH184 150 39040 133208 1236 316 1078
DSH240 200 52730 179920 1704 309 1056
DSH295 250 64520 220149 2035 317 1082
DSH381 300 81490 278052 2621 311 1061
DSH485 400 103500 353152 3272 316 1079
60 Hz
DSH090 75 27470 93730 855 321 1096
DSH105 90 32280 110100 1001 322 1100
DSH120 100 36630 125000 1125 326 1111
DSH140 120 41510 141600 1275 326 1111
DSH161 130 47220 161100 147 321 1096
DSH184 150 53160 181400 1636 325 1109
DSH240 200 71760 244852 2246 320 1090
DSH295 250 87610 298934 2696 325 1109
DSH381 300 110300 376355 3452 320 1090
DSH485 400 141900 484177 4366 325 1109
Displacement at nominal speed 2900rpm at 50 Hz 3500rpm at 60 Hz Net weight with oil charge
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
7FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
Performances 50-60 Hz R452B Single compressor
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 19590 66902 64 305 1040
DSH105 90 23451 80090 74 318 1087
DSH120 100 26366 90045 82 322 1098
DSH140 120 30180 103070 93 324 1107
DSH161 130 34855 119035 105 331 1131
DSH184 150 38779 132437 118 329 1124
DSH240 200 52130 177873 161 323 1102
DSH295 250 63995 218359 194 330 1127
DSH381 300 78426 266615 248 316 1077
DSH485 400 101971 347935 314 325 1108
60 Hz
DSH090 75 26652 91020 83 320 1091
DSH105 90 31925 109031 96 333 1136
DSH120 100 35779 122192 108 330 1127
DSH140 120 40984 139968 124 329 1124
DSH161 130 46938 160301 138 341 1163
DSH184 150 52181 178206 157 332 1132
DSH240 200 70756 241427 214 331 1130
DSH295 250 86418 294866 255 339 1157
DSH381 300 105578 360243 329 320 1093
DSH485 400 137378 468747 417 330 1125
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
The impact of manifolding on compressor performances depends widely of the customer system itself Therefore it would be unrealistic to provide data that corresponds accurately to a particular system In first approach to support compressors selection at full load the manifold
performances can be considered as the sum of capacities of the compressors composing the manifold For better accuracy the customer should integrate the appropriate weighing coefficients according to his system very pressure drops and part load levels
Tandem and trio performances
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
8 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Single compressors
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Compressor modelD H H1 H2 L1 L2 L3
Outline drawing numbermm inch mm inch mm inch mm inch mm inch mm inch mm inch
DSH090 243 957 485 1909 235 925 451 1776 180 709 230 906 230 906
8560004
DSH105-120-140-161 243 957 542 2134 278 1094 509 2004 180201
709791 230 906 230 906 8560003
8560041
DSH184 243 957 558 2197 299 1177 524 2063 201 791 230 906 230 906 8560023
DSH240 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
8556208DSH295 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
DSH381 333 1311 726 2858 302 1187 667 2626 429 478
16891882 371 1461 371 1461
8556199 8556239
DSH485 333 1311 726 2858 302 1187 667 2626 429446
16891756 371 1461 371 1461 8556198
8556237
compressor motor codes 4 7 9 compressor motor code 3
L1L3
L2
Oslash D
HH2
H1
L2
HH2
H1
Oslash D
L3L1
9FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Connection Details
DSH090 DSH105-120-140-161-184 DSH240-295-381 DSH485
Suction connection Brazed 118 Brazed 138 Brazed 158 Brazed 158
Discharge connection Brazed 78 Brazed 78 Brazed 118 Brazed 138
Oil sight glass Threaded (118 ndash 18 UNEF)
Oil equalization connection Rotolock 134 Rotolock 214
Oil drain connection None Female frac14 Flare incorporating a Schrader valve
Low pressure gauge port (Shrader) Male frac14 Flare incorporating a Schrader valve
Outline
10 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH series scroll compressor benefit from an improved design to achieve the highest efficiency and increased life time
Features
Danfoss Intermediate Discharge Valves (IDVs) are located close to the discharge side of the compressor They reduce excessive compression of refrigerant under part-load conditions while maintaining the same cooling capacity The IDVs open when discharge pressure falls below the built-in optimization point They adapt the effort of the motor to the varying load and pressure conditions in the system thus reducing the effort of the motor and its electrical consumption and improving the systemrsquos seasonal energy efficiency
How do IDVs work
Overview
DSH090-105-120-140-161-184 DSH240-295-381-485
Intermediate discharge valves (IDVs) increase seasonal efficiency
Heat shield lowers the heat transfer between discharge and suction gas and the sound level
Internal Non Return Valve (INRV) prevents excessive leak rate from high pressure side
Lead free polymer bearings improve behavior under poor lubrication conditions
Integrated discharge gas temperature protection (DGT)
Patented motor cap for optimal motor cooling and higher resistance to liquid slugging
Organ pipe masters oil circulation in manifold configuration
Patented gas path flow with gas intake design induce higher resistance to liquid slugging
5FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model designation
Danfoss scroll compressor DSH for R410A and R452B is available as single compressor and can be assembled in tandem or trio combinations The example below presents the
compressor nomenclature which equals the technical reference as shown on the compressor nameplate Code numbers for ordering are listed in section ldquoOrdering informationrdquo
Nomenclature
Family lubricant amp refrigerantDSH Scroll POE lubricant R410A and R452B (according to version) Motor protection
A Electronic module 24V AC R410A onlyB Electronic module 110-240V R410A onlyP Electonic module 110-240V R410A and R452BX Electonic module24V AC R410A and R452BL Internal overload protector R410A and R452B
Suction and discharge connectionsA Brazed connections
Family lubricant
amp refrigerant
Nominalcapacity
Approvals Voltage Version Evolutionindex
Evolution indexA~Z
C4DSH A AB485
Motor voltage code3 200-230V3~60Hz4 380-415V3~50Hz - 460V3~60Hz for DSH240 and DSH381 380-400V3~50Hz - 460V3~60Hz7 575V3~60Hz9 for DSH090 to DSH184 380-400V3~60Hz for DSH240 to DSH485 380V3~60Hz
UL index
Nominal capacity in thousand Btuh at 60Hz ARI conditions
6 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
50-60 Hz data Single compressor
Performances 50-60 Hz R410A Single compressor
ModelNominal
tons 60 Hz Swept volume Displacement (50 Hz) Displacement (60 Hz) Oil charge Net weight
TR cm3rev cuinrev m3h cufth m3h cufth dm3 oz kg lbs
DSH090 75 884 539 154 544 186 657 30 102 58 128
DSH105 90 1035 632 180 636 218 770 33 112 64 141
DSH120 100 1169 713 203 717 246 869 33 112 64 141
DSH140 120 133 812 231 816 279 985 33 112 67 148
DSH161 130 1517 926 264 932 319 1127 33 112 69 152
DSH184 150 1703 1039 296 1045 358 1264 36 122 715 158
DSH240 200 22760 1389 396 1398 478 1688 61 206 114 251
DSH295 250 27620 1685 481 1699 580 2048 61 206 117 258
DSH381 300 34500 2105 60 2119 723 2553 61 206 162 357
DSH485 400 44260 2701 77 2719 929 3281 61 206 176 388
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 20050 68413 654 306 1046
DSH105 90 23580 80457 765 308 1052
DSH120 100 26790 91410 861 311 1062
DSH140 120 30370 103625 969 313 1069
DSH161 130 34890 119048 1103 316 1079
DSH184 150 39040 133208 1236 316 1078
DSH240 200 52730 179920 1704 309 1056
DSH295 250 64520 220149 2035 317 1082
DSH381 300 81490 278052 2621 311 1061
DSH485 400 103500 353152 3272 316 1079
60 Hz
DSH090 75 27470 93730 855 321 1096
DSH105 90 32280 110100 1001 322 1100
DSH120 100 36630 125000 1125 326 1111
DSH140 120 41510 141600 1275 326 1111
DSH161 130 47220 161100 147 321 1096
DSH184 150 53160 181400 1636 325 1109
DSH240 200 71760 244852 2246 320 1090
DSH295 250 87610 298934 2696 325 1109
DSH381 300 110300 376355 3452 320 1090
DSH485 400 141900 484177 4366 325 1109
Displacement at nominal speed 2900rpm at 50 Hz 3500rpm at 60 Hz Net weight with oil charge
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
7FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
Performances 50-60 Hz R452B Single compressor
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 19590 66902 64 305 1040
DSH105 90 23451 80090 74 318 1087
DSH120 100 26366 90045 82 322 1098
DSH140 120 30180 103070 93 324 1107
DSH161 130 34855 119035 105 331 1131
DSH184 150 38779 132437 118 329 1124
DSH240 200 52130 177873 161 323 1102
DSH295 250 63995 218359 194 330 1127
DSH381 300 78426 266615 248 316 1077
DSH485 400 101971 347935 314 325 1108
60 Hz
DSH090 75 26652 91020 83 320 1091
DSH105 90 31925 109031 96 333 1136
DSH120 100 35779 122192 108 330 1127
DSH140 120 40984 139968 124 329 1124
DSH161 130 46938 160301 138 341 1163
DSH184 150 52181 178206 157 332 1132
DSH240 200 70756 241427 214 331 1130
DSH295 250 86418 294866 255 339 1157
DSH381 300 105578 360243 329 320 1093
DSH485 400 137378 468747 417 330 1125
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
The impact of manifolding on compressor performances depends widely of the customer system itself Therefore it would be unrealistic to provide data that corresponds accurately to a particular system In first approach to support compressors selection at full load the manifold
performances can be considered as the sum of capacities of the compressors composing the manifold For better accuracy the customer should integrate the appropriate weighing coefficients according to his system very pressure drops and part load levels
Tandem and trio performances
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
8 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Single compressors
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Compressor modelD H H1 H2 L1 L2 L3
Outline drawing numbermm inch mm inch mm inch mm inch mm inch mm inch mm inch
DSH090 243 957 485 1909 235 925 451 1776 180 709 230 906 230 906
8560004
DSH105-120-140-161 243 957 542 2134 278 1094 509 2004 180201
709791 230 906 230 906 8560003
8560041
DSH184 243 957 558 2197 299 1177 524 2063 201 791 230 906 230 906 8560023
DSH240 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
8556208DSH295 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
DSH381 333 1311 726 2858 302 1187 667 2626 429 478
16891882 371 1461 371 1461
8556199 8556239
DSH485 333 1311 726 2858 302 1187 667 2626 429446
16891756 371 1461 371 1461 8556198
8556237
compressor motor codes 4 7 9 compressor motor code 3
L1L3
L2
Oslash D
HH2
H1
L2
HH2
H1
Oslash D
L3L1
9FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Connection Details
DSH090 DSH105-120-140-161-184 DSH240-295-381 DSH485
Suction connection Brazed 118 Brazed 138 Brazed 158 Brazed 158
Discharge connection Brazed 78 Brazed 78 Brazed 118 Brazed 138
Oil sight glass Threaded (118 ndash 18 UNEF)
Oil equalization connection Rotolock 134 Rotolock 214
Oil drain connection None Female frac14 Flare incorporating a Schrader valve
Low pressure gauge port (Shrader) Male frac14 Flare incorporating a Schrader valve
Outline
10 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model designation
Danfoss scroll compressor DSH for R410A and R452B is available as single compressor and can be assembled in tandem or trio combinations The example below presents the
compressor nomenclature which equals the technical reference as shown on the compressor nameplate Code numbers for ordering are listed in section ldquoOrdering informationrdquo
Nomenclature
Family lubricant amp refrigerantDSH Scroll POE lubricant R410A and R452B (according to version) Motor protection
A Electronic module 24V AC R410A onlyB Electronic module 110-240V R410A onlyP Electonic module 110-240V R410A and R452BX Electonic module24V AC R410A and R452BL Internal overload protector R410A and R452B
Suction and discharge connectionsA Brazed connections
Family lubricant
amp refrigerant
Nominalcapacity
Approvals Voltage Version Evolutionindex
Evolution indexA~Z
C4DSH A AB485
Motor voltage code3 200-230V3~60Hz4 380-415V3~50Hz - 460V3~60Hz for DSH240 and DSH381 380-400V3~50Hz - 460V3~60Hz7 575V3~60Hz9 for DSH090 to DSH184 380-400V3~60Hz for DSH240 to DSH485 380V3~60Hz
UL index
Nominal capacity in thousand Btuh at 60Hz ARI conditions
6 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
50-60 Hz data Single compressor
Performances 50-60 Hz R410A Single compressor
ModelNominal
tons 60 Hz Swept volume Displacement (50 Hz) Displacement (60 Hz) Oil charge Net weight
TR cm3rev cuinrev m3h cufth m3h cufth dm3 oz kg lbs
DSH090 75 884 539 154 544 186 657 30 102 58 128
DSH105 90 1035 632 180 636 218 770 33 112 64 141
DSH120 100 1169 713 203 717 246 869 33 112 64 141
DSH140 120 133 812 231 816 279 985 33 112 67 148
DSH161 130 1517 926 264 932 319 1127 33 112 69 152
DSH184 150 1703 1039 296 1045 358 1264 36 122 715 158
DSH240 200 22760 1389 396 1398 478 1688 61 206 114 251
DSH295 250 27620 1685 481 1699 580 2048 61 206 117 258
DSH381 300 34500 2105 60 2119 723 2553 61 206 162 357
DSH485 400 44260 2701 77 2719 929 3281 61 206 176 388
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 20050 68413 654 306 1046
DSH105 90 23580 80457 765 308 1052
DSH120 100 26790 91410 861 311 1062
DSH140 120 30370 103625 969 313 1069
DSH161 130 34890 119048 1103 316 1079
DSH184 150 39040 133208 1236 316 1078
DSH240 200 52730 179920 1704 309 1056
DSH295 250 64520 220149 2035 317 1082
DSH381 300 81490 278052 2621 311 1061
DSH485 400 103500 353152 3272 316 1079
60 Hz
DSH090 75 27470 93730 855 321 1096
DSH105 90 32280 110100 1001 322 1100
DSH120 100 36630 125000 1125 326 1111
DSH140 120 41510 141600 1275 326 1111
DSH161 130 47220 161100 147 321 1096
DSH184 150 53160 181400 1636 325 1109
DSH240 200 71760 244852 2246 320 1090
DSH295 250 87610 298934 2696 325 1109
DSH381 300 110300 376355 3452 320 1090
DSH485 400 141900 484177 4366 325 1109
Displacement at nominal speed 2900rpm at 50 Hz 3500rpm at 60 Hz Net weight with oil charge
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
7FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
Performances 50-60 Hz R452B Single compressor
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 19590 66902 64 305 1040
DSH105 90 23451 80090 74 318 1087
DSH120 100 26366 90045 82 322 1098
DSH140 120 30180 103070 93 324 1107
DSH161 130 34855 119035 105 331 1131
DSH184 150 38779 132437 118 329 1124
DSH240 200 52130 177873 161 323 1102
DSH295 250 63995 218359 194 330 1127
DSH381 300 78426 266615 248 316 1077
DSH485 400 101971 347935 314 325 1108
60 Hz
DSH090 75 26652 91020 83 320 1091
DSH105 90 31925 109031 96 333 1136
DSH120 100 35779 122192 108 330 1127
DSH140 120 40984 139968 124 329 1124
DSH161 130 46938 160301 138 341 1163
DSH184 150 52181 178206 157 332 1132
DSH240 200 70756 241427 214 331 1130
DSH295 250 86418 294866 255 339 1157
DSH381 300 105578 360243 329 320 1093
DSH485 400 137378 468747 417 330 1125
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
The impact of manifolding on compressor performances depends widely of the customer system itself Therefore it would be unrealistic to provide data that corresponds accurately to a particular system In first approach to support compressors selection at full load the manifold
performances can be considered as the sum of capacities of the compressors composing the manifold For better accuracy the customer should integrate the appropriate weighing coefficients according to his system very pressure drops and part load levels
Tandem and trio performances
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
8 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Single compressors
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Compressor modelD H H1 H2 L1 L2 L3
Outline drawing numbermm inch mm inch mm inch mm inch mm inch mm inch mm inch
DSH090 243 957 485 1909 235 925 451 1776 180 709 230 906 230 906
8560004
DSH105-120-140-161 243 957 542 2134 278 1094 509 2004 180201
709791 230 906 230 906 8560003
8560041
DSH184 243 957 558 2197 299 1177 524 2063 201 791 230 906 230 906 8560023
DSH240 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
8556208DSH295 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
DSH381 333 1311 726 2858 302 1187 667 2626 429 478
16891882 371 1461 371 1461
8556199 8556239
DSH485 333 1311 726 2858 302 1187 667 2626 429446
16891756 371 1461 371 1461 8556198
8556237
compressor motor codes 4 7 9 compressor motor code 3
L1L3
L2
Oslash D
HH2
H1
L2
HH2
H1
Oslash D
L3L1
9FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Connection Details
DSH090 DSH105-120-140-161-184 DSH240-295-381 DSH485
Suction connection Brazed 118 Brazed 138 Brazed 158 Brazed 158
Discharge connection Brazed 78 Brazed 78 Brazed 118 Brazed 138
Oil sight glass Threaded (118 ndash 18 UNEF)
Oil equalization connection Rotolock 134 Rotolock 214
Oil drain connection None Female frac14 Flare incorporating a Schrader valve
Low pressure gauge port (Shrader) Male frac14 Flare incorporating a Schrader valve
Outline
10 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
50-60 Hz data Single compressor
Performances 50-60 Hz R410A Single compressor
ModelNominal
tons 60 Hz Swept volume Displacement (50 Hz) Displacement (60 Hz) Oil charge Net weight
TR cm3rev cuinrev m3h cufth m3h cufth dm3 oz kg lbs
DSH090 75 884 539 154 544 186 657 30 102 58 128
DSH105 90 1035 632 180 636 218 770 33 112 64 141
DSH120 100 1169 713 203 717 246 869 33 112 64 141
DSH140 120 133 812 231 816 279 985 33 112 67 148
DSH161 130 1517 926 264 932 319 1127 33 112 69 152
DSH184 150 1703 1039 296 1045 358 1264 36 122 715 158
DSH240 200 22760 1389 396 1398 478 1688 61 206 114 251
DSH295 250 27620 1685 481 1699 580 2048 61 206 117 258
DSH381 300 34500 2105 60 2119 723 2553 61 206 162 357
DSH485 400 44260 2701 77 2719 929 3281 61 206 176 388
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 20050 68413 654 306 1046
DSH105 90 23580 80457 765 308 1052
DSH120 100 26790 91410 861 311 1062
DSH140 120 30370 103625 969 313 1069
DSH161 130 34890 119048 1103 316 1079
DSH184 150 39040 133208 1236 316 1078
DSH240 200 52730 179920 1704 309 1056
DSH295 250 64520 220149 2035 317 1082
DSH381 300 81490 278052 2621 311 1061
DSH485 400 103500 353152 3272 316 1079
60 Hz
DSH090 75 27470 93730 855 321 1096
DSH105 90 32280 110100 1001 322 1100
DSH120 100 36630 125000 1125 326 1111
DSH140 120 41510 141600 1275 326 1111
DSH161 130 47220 161100 147 321 1096
DSH184 150 53160 181400 1636 325 1109
DSH240 200 71760 244852 2246 320 1090
DSH295 250 87610 298934 2696 325 1109
DSH381 300 110300 376355 3452 320 1090
DSH485 400 141900 484177 4366 325 1109
Displacement at nominal speed 2900rpm at 50 Hz 3500rpm at 60 Hz Net weight with oil charge
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
7FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
Performances 50-60 Hz R452B Single compressor
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 19590 66902 64 305 1040
DSH105 90 23451 80090 74 318 1087
DSH120 100 26366 90045 82 322 1098
DSH140 120 30180 103070 93 324 1107
DSH161 130 34855 119035 105 331 1131
DSH184 150 38779 132437 118 329 1124
DSH240 200 52130 177873 161 323 1102
DSH295 250 63995 218359 194 330 1127
DSH381 300 78426 266615 248 316 1077
DSH485 400 101971 347935 314 325 1108
60 Hz
DSH090 75 26652 91020 83 320 1091
DSH105 90 31925 109031 96 333 1136
DSH120 100 35779 122192 108 330 1127
DSH140 120 40984 139968 124 329 1124
DSH161 130 46938 160301 138 341 1163
DSH184 150 52181 178206 157 332 1132
DSH240 200 70756 241427 214 331 1130
DSH295 250 86418 294866 255 339 1157
DSH381 300 105578 360243 329 320 1093
DSH485 400 137378 468747 417 330 1125
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
The impact of manifolding on compressor performances depends widely of the customer system itself Therefore it would be unrealistic to provide data that corresponds accurately to a particular system In first approach to support compressors selection at full load the manifold
performances can be considered as the sum of capacities of the compressors composing the manifold For better accuracy the customer should integrate the appropriate weighing coefficients according to his system very pressure drops and part load levels
Tandem and trio performances
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
8 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Single compressors
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Compressor modelD H H1 H2 L1 L2 L3
Outline drawing numbermm inch mm inch mm inch mm inch mm inch mm inch mm inch
DSH090 243 957 485 1909 235 925 451 1776 180 709 230 906 230 906
8560004
DSH105-120-140-161 243 957 542 2134 278 1094 509 2004 180201
709791 230 906 230 906 8560003
8560041
DSH184 243 957 558 2197 299 1177 524 2063 201 791 230 906 230 906 8560023
DSH240 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
8556208DSH295 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
DSH381 333 1311 726 2858 302 1187 667 2626 429 478
16891882 371 1461 371 1461
8556199 8556239
DSH485 333 1311 726 2858 302 1187 667 2626 429446
16891756 371 1461 371 1461 8556198
8556237
compressor motor codes 4 7 9 compressor motor code 3
L1L3
L2
Oslash D
HH2
H1
L2
HH2
H1
Oslash D
L3L1
9FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Connection Details
DSH090 DSH105-120-140-161-184 DSH240-295-381 DSH485
Suction connection Brazed 118 Brazed 138 Brazed 158 Brazed 158
Discharge connection Brazed 78 Brazed 78 Brazed 118 Brazed 138
Oil sight glass Threaded (118 ndash 18 UNEF)
Oil equalization connection Rotolock 134 Rotolock 214
Oil drain connection None Female frac14 Flare incorporating a Schrader valve
Low pressure gauge port (Shrader) Male frac14 Flare incorporating a Schrader valve
Outline
10 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Technical specifications
Performances 50-60 Hz R452B Single compressor
ModelNominal tons
60 HzNominal cooling
capacityPowerinput COP EER
TR W Btuh kW WW BtuhW
50 Hz
DSH090 75 19590 66902 64 305 1040
DSH105 90 23451 80090 74 318 1087
DSH120 100 26366 90045 82 322 1098
DSH140 120 30180 103070 93 324 1107
DSH161 130 34855 119035 105 331 1131
DSH184 150 38779 132437 118 329 1124
DSH240 200 52130 177873 161 323 1102
DSH295 250 63995 218359 194 330 1127
DSH381 300 78426 266615 248 316 1077
DSH485 400 101971 347935 314 325 1108
60 Hz
DSH090 75 26652 91020 83 320 1091
DSH105 90 31925 109031 96 333 1136
DSH120 100 35779 122192 108 330 1127
DSH140 120 40984 139968 124 329 1124
DSH161 130 46938 160301 138 341 1163
DSH184 150 52181 178206 157 332 1132
DSH240 200 70756 241427 214 331 1130
DSH295 250 86418 294866 255 339 1157
DSH381 300 105578 360243 329 320 1093
DSH485 400 137378 468747 417 330 1125
TR Ton of Refrigeration Standard rating conditions For 50 Hz Evaporating temperature 5degC (41degF) Condensing temperature 50degC (122degF) Superheat 10K (18degF) Subcooling 0K (0degF)EER Energy Efficiency Ratio For 60 Hz Evaporating temperature 72degC (45degF) Condensing temperature 544degC (130degF) Superheat 111K (20degF) Subcooling 83K (15degF)COP Coefficient Of Performance
Subject to modification without prior notificationData given for motor code 4 compressor with above conditions
The impact of manifolding on compressor performances depends widely of the customer system itself Therefore it would be unrealistic to provide data that corresponds accurately to a particular system In first approach to support compressors selection at full load the manifold
performances can be considered as the sum of capacities of the compressors composing the manifold For better accuracy the customer should integrate the appropriate weighing coefficients according to his system very pressure drops and part load levels
Tandem and trio performances
For regular updates and detailed capacities please refer to Coolselectorreg2 wwwcoolselectordanfosscom
8 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Single compressors
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Compressor modelD H H1 H2 L1 L2 L3
Outline drawing numbermm inch mm inch mm inch mm inch mm inch mm inch mm inch
DSH090 243 957 485 1909 235 925 451 1776 180 709 230 906 230 906
8560004
DSH105-120-140-161 243 957 542 2134 278 1094 509 2004 180201
709791 230 906 230 906 8560003
8560041
DSH184 243 957 558 2197 299 1177 524 2063 201 791 230 906 230 906 8560023
DSH240 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
8556208DSH295 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
DSH381 333 1311 726 2858 302 1187 667 2626 429 478
16891882 371 1461 371 1461
8556199 8556239
DSH485 333 1311 726 2858 302 1187 667 2626 429446
16891756 371 1461 371 1461 8556198
8556237
compressor motor codes 4 7 9 compressor motor code 3
L1L3
L2
Oslash D
HH2
H1
L2
HH2
H1
Oslash D
L3L1
9FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Connection Details
DSH090 DSH105-120-140-161-184 DSH240-295-381 DSH485
Suction connection Brazed 118 Brazed 138 Brazed 158 Brazed 158
Discharge connection Brazed 78 Brazed 78 Brazed 118 Brazed 138
Oil sight glass Threaded (118 ndash 18 UNEF)
Oil equalization connection Rotolock 134 Rotolock 214
Oil drain connection None Female frac14 Flare incorporating a Schrader valve
Low pressure gauge port (Shrader) Male frac14 Flare incorporating a Schrader valve
Outline
10 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Single compressors
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Oslash D
H1
4 x holesOslash1905mm(075 inch)
L3
L2
1905mm(75 inch)
1905mm(75 inch)
L1
30deg
30deg
H2H
Compressor modelD H H1 H2 L1 L2 L3
Outline drawing numbermm inch mm inch mm inch mm inch mm inch mm inch mm inch
DSH090 243 957 485 1909 235 925 451 1776 180 709 230 906 230 906
8560004
DSH105-120-140-161 243 957 542 2134 278 1094 509 2004 180201
709791 230 906 230 906 8560003
8560041
DSH184 243 957 558 2197 299 1177 524 2063 201 791 230 906 230 906 8560023
DSH240 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
8556208DSH295 320 126 653 2571 302 1187 618 2433 427 1681 371 1461 371 1461
DSH381 333 1311 726 2858 302 1187 667 2626 429 478
16891882 371 1461 371 1461
8556199 8556239
DSH485 333 1311 726 2858 302 1187 667 2626 429446
16891756 371 1461 371 1461 8556198
8556237
compressor motor codes 4 7 9 compressor motor code 3
L1L3
L2
Oslash D
HH2
H1
L2
HH2
H1
Oslash D
L3L1
9FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Connection Details
DSH090 DSH105-120-140-161-184 DSH240-295-381 DSH485
Suction connection Brazed 118 Brazed 138 Brazed 158 Brazed 158
Discharge connection Brazed 78 Brazed 78 Brazed 118 Brazed 138
Oil sight glass Threaded (118 ndash 18 UNEF)
Oil equalization connection Rotolock 134 Rotolock 214
Oil drain connection None Female frac14 Flare incorporating a Schrader valve
Low pressure gauge port (Shrader) Male frac14 Flare incorporating a Schrader valve
Outline
10 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Connection Details
DSH090 DSH105-120-140-161-184 DSH240-295-381 DSH485
Suction connection Brazed 118 Brazed 138 Brazed 158 Brazed 158
Discharge connection Brazed 78 Brazed 78 Brazed 118 Brazed 138
Oil sight glass Threaded (118 ndash 18 UNEF)
Oil equalization connection Rotolock 134 Rotolock 214
Oil drain connection None Female frac14 Flare incorporating a Schrader valve
Low pressure gauge port (Shrader) Male frac14 Flare incorporating a Schrader valve
Outline
10 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
L1
HH1
D
L
Dimensions
Tandem assemblies
H1H
D
L1
L
H
L
L1
H1
D
D
H
L
L1
H1
L1
H1H
L
D
11FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dimensions
Tandem model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH180E DSH090 + DSH090 850 3346 384 1512 507 1996
240 min
945 min 242 953
8560115
DSH195U DSH090 + DSH105 850 3346 386 1520 565 2224 8556233
DSH210U DSH090 + DSH120 850 3346 386 1520 565 2224 8556233
DSH210E DSH105 + DSH105 850 3346 384 1512 565 2224 8560114
DSH230U DSH090 + DSH140 850 3346 386 1520 565 2224 8556233
DSH240E DSH120 + DSH120 850 3346 384 1512 565 2224 8560114
DSH251U DSH090 + DSH161 850 3346 386 1520 565 2224 8556233
DSH260U DSH140 + DSH120 850 3346 386 1520 565 2224 8556230
DSH274U DSH090 + DSH184 850 3346 428 1685 580 2283 8556232
DSH281U DSH161 + DSH120 850 3346 386 1520 565 2224 8556230
DSH280E DSH140 + DSH140 850 3346 384 1512 565 2224 8560114
DSH289U DSH105 + DSH184 850 3346 428 1685 580 2283 8556231
DSH301U DSH161 + DSH140 850 3346 386 1520 565 2224 8556230
DSH304U DSH120 + DSH184 850 3346 428 1685 580 2283 8556231
DSH322E DSH161 + DSH161 850 3346 384 1512 565 2224 8560114
DSH324U DSH140 + DSH184 850 3346 428 1685 580 2283 8556231
DSH345U DSH161 + DSH184 850 3346 428 1685 580 2283 8556231
DSH368E DSH184 + DSH184 850 3346 428 1685 580 2283 8560113
DSH360X DSH120 + DSH240 903 3555 533 2098 731 2878
359 min
1413min 211 831
8560128
DSH424X DSH184 + DSH240 903 3555 533 2098 731 2878 8556259
DSH456X DSH161 + DSH295 903 3555 533 2098 731 2878 8560128
DSH479X DSH184 + DSH295 903 3555 533 2098 731 2878 8556259
DSH565X DSH184 + DSH381 903 3555 533 2098 803 3161 8556260
DSH482E DSH240 + DSH240 1025 4035 527 2075 701 276
535 min
2106 min
211 831
8556228
DSH535U DSH240 + DSH295 1025 4035 527 2075 701 276 8556228
DSH590E DSH295 + DSH295 1025 4035 527 2075 701 276 8556228
DSH620U DSH240 + DSH381 1025 4035 527576 20752268 774 305
8556222
DSH675U DSH295 + DSH381 1025 4035 527576 20752268 774 305 8556222
DSH725U DSH240 + DSH485 1025 4035 546563 21502217 774 305 8556207
DSH760E DSH381 + DSH381 1025 4035 527576 20752268 774 305 8556223
DSH780U DSH295 + DSH485 1025 4035 546563 21502217 774 305640 min
2520 min
8556220
DSH865U DSH381 + DSH485 1025 4035 553570 21772244 774 305
8556224
DSH970E DSH485 + DSH485 1025 4035 553570 21772244 774 305 8556205
compressor motor codes 4 7 9 compressor motor code 3Tandems to be achieved by assembly of individual compressorsBy convention the last letter of tandems designation have been set to help to discern easily which type of manifold we are considering U Uneven tandemE Even tandemX Crossplatfom (medium-large) tandem
Tandem assemblies
12 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Trio assemblies
Trio model CompositionL D H L1 H1
Outline drawing numbermm inch mm inch mm inch mm inch mm inch
DSH420 3 x DSH1401131 4453 513 202 569 224 515 min 2028 min
230 906
8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH483 3 x DSH1611131 4453 513 202 569 224 515 min 2028 min 8556195
1118 4402 513 202 569 224 511 min 2012 min 8556187
DSH552 3 x DSH1841139 4484 518 2039 584 2299 515 min 2028 min 8556194
1139 4484 518 2039 584 2299 511 min 2012 min 8556193
DSH720 3 x DSH240 1467 5776 543 2138 701 276
535 min 2106 min 211 831
8556217
DSH885 3 x DSH295 1467 5776 543 2138 701 276 8556217
DSH1140 3 x DSH381 1467 5776 545594
21462339 774 305
8556229
DSH1245 2 x DSH381 + DSH485 1520 5984 573594
22562339 774 305 8556234
DSH1350 DSH381 + 2 x DSH485 1520 5984 573590
22562323 774 305
680 min 2677 min 244 9618556235
DSH1455 3 x DSH485 1520 5984 573590
22562323 774 305 8556216
compressor motor codes 4 7 9 compressor motor code 3Trio to be acheived by assembly of individual compressors
HH1
D
L1
L
HH1
L1
L
D
Dimensions
H1L1
H
L L
H1L1H
13FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
Danfoss scroll compressors DSH are available in four different motor voltages as listed below
Electrical power is connected to the compressor terminals by Oslash 48mm (316) screws The maximum tightening torque is 3Nm Use a 14 ring terminal on the power leads
Cable gland or similar protection component must be used on electrical boxs knockouts to against accidental contact with electrical parts inside
Motor voltage
Wiring connections
DSH090-105-120-140-161except DSH140-161 code3
DSH140-161 code3 amp DSH184
The terminal box is provided with a Oslash 255mm (φ1 inch) (ISO25) and a Oslash 29mm (φ114) (PG21) knockouts
The terminal box is provided with a Oslash 405mm (φ159inch) hole (ISO40) for power supply and a Oslash 165mm (φ065inch) knockout (ISO16)
Motor voltage code Code 3 Code 4 Code 7 Code 9
50 Hz Nominal voltage - 380-415V-3ph380-400V-3ph - -
60 Hz Nominal voltage 200-230V-3ph 460V-3ph 575V-3ph 380-400V-3ph380V-3ph
DSH240-4 and DSH381-4 DSH240-9 to DSH485-9Voltage range Nominal voltage plusmn 10 The voltage range indicates where the compressor can run in the majority of the application envelope A boundary voltage supply which accumulates under specific conditions such as high ambiance high superheat or map boundary conditions may lead to a compressor trip
Vavg = Mean voltage of phases 1 2 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg voltage imbalance = x 100
The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage over one or several phases which in turn leads to
overheating and possible motor damage Voltage imbalance is given by the formula
Terminal box
Oslash 255mm (φ1inch) knockout
Power supply
Oslash 29mm (φ114inch)knockout
Oslash 405mm(φ159inch) hole
Oslash 165mm(φ065inch) knockout
Power supply
14 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
DSH240-295-381-485except code 3
DSH381 code 3
The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit
The 3 power supply knockouts accommodate the following diametersbull Oslash 508mm (φ 2inch) (UL 112 conduit) amp
Oslash 437mm (φ 172inch) (UL 114 conduit) amp Oslash 345mm (φ 136 inch) (UL 1 conduit)
bull Oslash 405mm (φ 159inch) (ISO40) amp Oslash 322mm (φ 127inch) (ISO32) amp Oslash 255 mm (φ 1 inch) (ISO25)
bull Oslash 255 mm (φ 1 inch) (ISO25)
The 4 others knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065inch) (ISO16) (x2)bull Oslash 207mm (φ 081inch) (ISO20 or PG135) (x2)
The terminal box is provided withbull Oslash 505mm (φ 198inch) (ISO 50 amp UL112 conduit) hole with possible Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) knockout for power supplybull 2 x Oslash 225mm (φ 089inch) (PG16 and UL frac12 conduit) knockouts for safety control circuit
Power supply
Power supply
Black
Sump heater
Cover holding screws (x3) Torque 22 Nm
Blue Brown
M1 M2Control circuit
Terminal box
Black Blue Brown
Faston 14 tabs
Power supply
Sump heater
Modulepower supply
M1-M2Control circuit
M1-M2 control circuit
Power supply
Power supply
Power supply
The terminal box is provided with 2 triple knockouts for power supply 2 double knockouts and 3 simple knockouts for the safety control circuit
The 2 power supply knockouts accommodate the following diametersbull Oslash 635mm (φ 25inch) (ISO63 and UL 2conduit) amp Oslash 542mm (φ 213inch) (PG42)amp 437mm (UL 114 conduit)
The 5 other knockouts are as followsbull Oslash 225mm (φ 089inch) (PG16) (UL 12) amp
Oslash 165mm (φ 065 inch) (ISO16)bull Oslash 255mm (φ 1inch) (ISO25) amp
20mm (φ 079inch) (ISO20 or PG135)bull Oslash 225mm (φ 089inch) (PG16) (UL 12)bull Oslash 255mm (φ 1inch) (ISO25) (x2)
DSH485 code 3
The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre-wired and should not be removed The module must be connected to a power supply of the appropriate voltage The module terminals are 63mm (025inch) size Faston type
L N S1 S2 M1 M2
L1 L2 L3Black Blue Brown
Phase sequence input
Internal control contact
SafetycircuitThermistor
connectionModule power
15FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Electrical data connections and wiring
IP rating The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are usedFirst numeral level of protection against contact and foreign objects
5 - Dust protectedSecond numeral level of protection against water
4 - Protection against water splashing
The temperature inside the terminal box must not exceed 70degC (158degF) Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure
panels may be necessary If not the electronic protection module may not operate properly Any compressor damage related to this will not be covered by Danfoss warranty In the same manner cables must be selected in a way that ensures the terminal box temperature does not exceed 70degC (158degF)
Three phase electrical characteristics
Terminal box temperature
Compressor modelLRA MCC Max operating current Winding resistance
A A A Ω
Motor voltage code 3
DSH090 203 43 38 039DSH105 267 51 45 027DSH120 267 61 48 027DSH140 304 64 56 024DSH161 315 69 64 022DSH184 351 75 71 022DSH240 485 105 103 016DSH295 560 128 112 013DSH381 717 170 152 009DSH485 1010 190 200 007
Motor voltage code 4
DSH090 98 22 19 147DSH105 142 25 22 105DSH120 142 29 24 105DSH140 147 30 28 092DSH161 158 35 31 083DSH184 197 386 36 083DSH240 215 51 49 062DSH295 260 62 56 052DSH381 320 79 72 042DSH485 413 90 89 023
Motor voltage code 7
DSH090 84 18 14 234DSH105 103 22 17 157DSH120 103 24 19 157DSH140 122 26 22 138DSH161 136 29 24 132DSH184 135 35 28 132DSH240 175 41 38 094DSH295 210 45 44 082DSH381 235 60 58 056DSH485 327 71 71 036
Motor voltage code 9
DSH090 124 26 23 105DSH105 160 33 26 072DSH120 160 35 29 072DSH140 168 37 33 062DSH161 177 41 37 057DSH184 239 51 41 057DSH240 260 60 58 042DSH295 310 72 69 036DSH381 360 90 88 024DSH485 491 111 106 016
16 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compressor can be operated in transient conditions and out of
the application envelope Above this value the internal motor protection or external electronic module will cut-out the compressor to protect the motor
Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation for
the starting current However in most cases the real starting current will be lower A soft starter can be applied to reduce starting current (see section ldquosoft startldquo)
MCC (Maximum Continuous Current)
LRA (Locked Rotor Amp)
Motor protection
DSH090 to DSH184 Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading low refrigerant flow or phase loss The cutout current is the MCC value listed in table ldquoThree phase electrical characteristicsrdquo
The protector is located in star point of motor and should it be activated will cut out all three phases It will be reset automatically
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal protector will trip
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset
Electrical data connections and wiring
Winding resistance is the resistance between phases at 25degC (77degF) (resistance value +- 7)Winding resistance is generally low and it requires adapted tools for precise measurement Use a digital ohm-meter a ldquo4 wiresrdquo method and measure under stabilised ambient temperature Winding resistance varies strongly with winding temperature If the compressor is stabilised at a different value than 25degC (77degF) the measured resistance must be corrected using the following formula
a + tamb
Rtamb = R25degC (77degF) _______ a + t25degC (77degF)
t25degC reference temperature = 25degC (77degF)tamb temperature during measurement degC (degF)R25degC (77degF) winding resistance at 25degC (77degF)Ramb winding resistance at tambCoefficient a = 2345
The MOC is the current when the compressors operate at maximum load conditions and 10 below nominal voltage (max evaporating temperature and max condensing temperature)
MOC can be used to select cables and contactors In normal operation the compressor current consumption is always less than the MOC value
Winding resistance
MOC (Maximum Operating Current)
Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box This device provides efficient and reliable protection against overheating and overloading as well as phase lossreversal
The motor protector comprises a control module and PTC sensors embedded in the motor winding
The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 If any thermistor exceeds its response temperature its resistance increases above the trip level (4500 Ω) and the output relay then trips ndash ie contacts M1-M2 are open After cooling to below the response temperature (resistance lt 2750 Ω) a 5-minute time delay is activated
After this delay has elapsed the relay is once again pulled in ndash ie contacts M1-M2 are closed The time delay may be cancelled by means
DSH240 to DSH485
17FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Phase sequence and reverserotation protection
Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings
Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumption will be minimal If reverse rotation symptoms occur shut the compressor down and connect the phases to their proper terminals If reverse rotation is not halted the compressor will cycle off-on the motor protection
PTC overheat
Delay timer active (after PTC over temp)
Appr 1 second40ms 40ms460ms 460ms
Appr 1 second920ms80ms
DSH240 to DSH485
Electrical data connections and wiring
DSH090 to DSH184
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Use a phase meter to establish the phase orders and connect line phases L1 L2 and L3 to terminals T1 T2 and T3 respectively
Compressor models DSH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up
The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3)
Should one of these parameters be incorrect the relay would lock out (contact M1-M2 open) The red LED on the module will show the following blink code (except on DSH485-3)
The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds
For more detailed information see ldquo Instructions for electronic modulerdquo FRCCPI031
Compressorstart
Phase monitoring 0 1 s 6 s
Phase sequence module logic
In case of phase reverse error
In case of phase loss error
Appro 760 ms120 ms120 ms120 ms 400ms
Appr 1second500ms 500ms
of resetting the mains (L-N -disconnect) for approximately 5 sec
A redgreen twin LED is visible on the module (except on DSH485-3) A solid green LED denotes a fault free condition A blinking red LED indicates an identifiable fault condition
While not compulsory an additional thermal magnetic motor circuit breaker is still advisable for either alarm or manual reset
Then it must be set below MCC value (at max operating current)
bull When the motor temperature is too high then the internal PTC over temp and module is activated
bull When the current is too high the thermal magnetic motor circuit breaker will trip before the module activate therefore offering possibility of manual reset
18 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Approval and certificates
DSH scroll compressors comply with the following approvals and certificates
Certificates are listed on wwwcommercialcompressorsdanfosscomdocumentationcertificates
Machines directive200642EC
Low voltage directive
Approval and certificates
201435EU
CE 0062 or CE 0038 or CE0871 (European Directive) All DSH models
UL (Underwriters Laboratories) All DSH models
Other approvals certificates Contact Danfoss
Products DSH models
Manufacturerrsquos declaration of incorporation Contact Danfoss
Products DSH models
Declaration of conformity Contact Danfoss
Pressure equipment directive
Internal free volume
201468EU
Products
Internal free volume without oil
Low pressure side High pressure side Total
litre cuinch litre cuinch litre cuinch
DSH090 117 714 07 43 124 757DSH105 136 830 07 43 143 873DSH120 136 830 07 43 143 873DSH140 136 830 07 43 143 873DSH161 136 830 07 43 143 873DSH184 139 848 07 43 146 891DSH240 275 1678 29 177 304 1855DSH295 271 1654 28 171 299 1825DSH381 311 1898 40 244 351 2142DSH485 275 1678 39 238 314 1916
Products DSH090 to 184 DSH240-295-485 DSH381
Category PED R410A II II IIICategory PED R452B III III IV
Maximum Minimum temperature - Ts -35degC lt Ts lt 55degC-31degF lt Ts lt 131degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
-35degC lt Ts lt 52degC-31degF lt Ts lt 1256degF
Maximum allowable pressure (Low side) - Ps
R410A 333 bar (g) R452B 312bar(g)R410A 483 psig R452B 453 psig
311bar(g)451psig
311bar(g)451psig
Declaration of conformity Contact Danfoss
19FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
General requirements Proper piping practices should be employed to
1 Ensure adequate oil return even under minimum load conditions (refrigerant speed piping slopeshellip) For validation tests see section ldquoManage oil in the circuitrdquo
2 Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop) For validation tests see section ldquoManage off cycle migrationrdquo
General recommendations are described in the figures below
3 Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing
mount has been installed For more information on noise and vibration see section on ldquoSound and vibration managementrdquo
HP
4ms (13 fts)or more
05 slope
To condenser
max 4m(13ft)
max 4m(13ft)
05 slope
U-trap as short as possible
4ms (13fts)or more
U trap as short as possible
Evaporator
LP
8 to 12ms(26 to 40fts)
HP
LP
Condenser
3D exibility
Upper loop
20 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Tandem and trio requirements
Design piping
DSH tandem and trio use static oil balancing principle to equalize oil level between the compressors by gravity This is ensured by a precise suction and oil equalization piping design
The discharge line has no impact on oil balancing It is shown with tee to indicate that both left and right side discharge headers are possible
By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings indicated in the following table- Manifolding accessory kit- Compressors
Suction and oil equalization piping drawings must be respected (diameters minimum straight lengths hellip)
R
Tandem model Composition Suction Discharge Oil equalization Kit tandem code no Outline drawing number
DSH180E DSH090 + DSH090 158 138 118 120Z0634 8560115DSH195U DSH090 + DSH105 158 138 118 120Z0694 8556233DSH210U DSH090 + DSH120 158 138 118 120Z0694 8556233DSH210E DSH105 + DSH105 158 138 118 120Z0634 8560114DSH230U DSH090 + DSH140 158 138 118 120Z0694 8556233DSH240E DSH120 + DSH120 158 138 118 120Z0634 8560114DSH251U DSH090 + DSH161 158 138 118 120Z0694 8556233DSH260U DSH140 + DSH120 158 138 118 120Z0692 8556230DSH274U DSH090 + DSH184 158 138 118 120Z0693 8556232DSH281U DSH161 + DSH120 158 138 118 120Z0692 8556230DSH280E DSH140 + DSH140 158 138 118 120Z0634 8560114DSH289U DSH105 + DSH184 158 138 118 120Z0693 8556231DSH301U DSH161 + DSH140 158 138 118 120Z0692 8556230DSH304U DSH120 + DSH184 158 138 118 120Z0694 8556231DSH322E DSH161 + DSH161 158 138 118 120Z0634 8560114DSH324U DSH140 + DSH184 158 138 118 120Z0694 8556231DSH345U DSH161 + DSH184 158 138 118 120Z0694 8556231DSH360X DSH120 + DSH240 218 138 138 120Z0709 8560128DSH368E DSH184 + DSH184 158 138 118 120Z0634 8560113DSH424X DSH184 + DSH240 218 138 138 120Z0709 8556259DSH456X DSH161 + DSH295 218 138 138 120Z0709 8560128DSH479X DSH184 + DSH295 218 138 138 120Z0709 8560259DSH482E DSH240 + DSH240 218 158 138 7777041 8556228DSH535U DSH240 + DSH295 218 158 138 7777037 8556228DSH565X DSH184 + DSH381 218 138 138 120Z0709 8556260DSH590E DSH295 + DSH295 218 158 138 7777041 8556228DSH620U DSH240 + DSH381 218 158 138 7777048 8556222DSH675U DSH295 + DSH381 218 158 138 7777037 8556222DSH725U DSH240 + DSH485 218 158 158 120Z0569 8556207DSH760E DSH381 + DSH381 218 158 138 7777041 8556223DSH780U DSH295 + DSH485 258 158 158 120Z0551 8556220DSH865U DSH381 + DSH485 258 158 158 120Z0550 8556224DSH970E DSH485 + DSH485 258 158 158 120Z0578 8556205
Trio model Composition Suction Discharge Oil equalization Suction from Kit tandemcode no
Outline drawing number
DSH420 3xDSH140 218 138 118Left
120Z06728556195
Right 8556187
DSH483 3xDSH161 218 138 118Left
120Z06848556195
Right 8556187
DSH552 3xDSH184 218 138 118Left
120Z06858556194
Right 8556193
DSH720 3xDSH240 258 158 158Left 120Z0673
8556217Right 7777039
DSH885 3xDSH295 258 158 158Left 120Z0673
8556217Right 7777039
DSH1140 3xDSH381 258 158 158Left 120Z0686
8556229Right 120Z0688
DSH1245 2xDSH381 + DSH485 258 218 158
Left7777063 8556234
Right
DSH1350 DSH381 + 2xDSH485 318 218 158
Left7777063 8556235
Right
DSH1455 3xDSH485 318 218 158Left
7777040 8556216Right
21FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added
on certain compressors according to the table Suction washers are included in tandem or trio accessory kits as described in the illustrations
R
Included in tandem or trio accessory kitNot supplied
Design piping
On tandem models
Compressor1(Cp1)
Compressor1(Cp1)
Right suctionLeft suction
Compressor2(Cp2)
Compressor2(Cp2)
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH090 + DSH090 DSH180ELeft
120Z0634 Not neededRight
DSH090 + DSH105 DSH195ULeft
120Z06945312497P01 25mm (098inch) Cp2
Right 5312497P05 26mm (102inch) Cp2
DSH090 + DSH120 DSH210ULeft
120Z06945312497P04 27mm (106inch) Cp2
Right 5312497P04 27mm (106inch) Cp2
DSH105 + DSH105 DSH210ELeft
120Z0634 Not neededRight
DSH090 + DSH140 DSH230ULeft
120Z06945312639P05 23mm (091inch) Cp1
Right 5312639P05 23mm (091inch) Cp1
DSH120 + DSH120 DSH240ELeft
120Z0634 Not neededRight
DSH090 + DSH161 DSH251ULeft
120Z06945312639P07 21mm (083inch) Cp1
Right 5312639P07 21mm (083inch) Cp1
DSH120 + DSH140 DSH260ULeft
120Z06925312497P04 27mm (106inch) Cp1
Right 5312497P04 27mm (106inch) Cp1
DSH090 + DSH184 DSH274ULeft
120Z06935312639P01 20mm (079inch) Cp1
Right 5312639P01 20mm (079inch) Cp1
DSH120 + DSH161 DSH281ULeft
120Z06925312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH140 + DSH140 DSH280ELeft
120Z0634 Not neededRight
Tandem to be achieved by assembly of individual compressors
22 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Cp1 Cp2 Tandem model Suction from Kit code no to order Washer reference Washer inner diameter Washer in suction of
DSH105 + DSH184 DSH289ULeft
120Z06935312497P03 23mm (091inch) Cp1
Right 5312497P03 23mm (091inch) Cp1
DSH140 + DSH161 DSH301ULeft
120Z06925312497P08 275mm (108inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH120 + DSH184 DSH304ULeft
120Z06945312497P06 24mm (094inch) Cp1
Right 5312497P06 24mm (094inch) Cp1
DSH161 + DSH161 DSH322ELeft
120Z0634 Not neededRight
DSH140 + DSH184 DSH324ULeft
120Z06945312497P01 25mm (098inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH161 + DSH184 DSH345ULeft
120Z06945312639P08 275mm (108inch) Cp1
Right 5312639P08 275mm (108inch) Cp1
DSH120 + DSH240 DSH360XLeft
120Z07095312497P06 24mm (094inch) Cp1
Right 5312497P01 25mm (098inch) Cp1
DSH184 + DSH184 DSH368ELeft
120Z0634 Not neededRight
DSH184 + DSH240 DSH424XLeft
120Z07095311579P10 355mm (14inch) CP2
Right 5311579P10 355mm (14inch) CP2
DSH161 + DSH295 DSH456XLeft
120Z07095312497P01 25mm (098inch) Cp1
Right 5312497P05 26mm (102inch) Cp1
DSH184 + DSH295 DSH479XLeft
120Z07095312497P05 26mm (102inch) CP1
Right 5312497P05 26mm (102inch) CP1
DSH240 + DSH240 DSH482ELeft
7777041 Not neededRight
DSH240 + DSH295 DSH535ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH184 + DSH381 DSH565XLeft
120Z07095312497P06 24mm (094inch) CP1
Right 5312497P06 24mm (094inch) CP1
DSH295 + DSH295 DSH590ELeft
7777041 Not neededRight
DSH240 + DSH381 DSH620ULeft
7777048 5311579P05 29mm (114inch) Cp1Right
DSH295 + DSH381 DSH675ULeft
7777037 5311579P01 31mm (122inch) Cp1Right
DSH240 + DSH485 DSH725ULeft
120Z0569 5311579P09 24mm (094inch) Cp1Right
DSH381 + DSH381 DSH760ELeft
7777041 Not neededRight
DSH295 + DSH485 DSH780ULeft
120Z0551 5311579P07 27mm (106inch) Cp1Right
DSH381 + DSH485 DSH865ULeft
120Z0550 5311579P08 30mm (118inch) Cp1Right
DSH485 + DSH485 DSH970ELeft
120Z0578 Not neededRight
NoteFor cross platform tandem application which tandem model name ending with X a external non-return valve (NRV) is highly recommended to install on DSH120161184 discharge line
23FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Compressor 1(Cp1)
Right suction Left suction
Compressor 2(Cp2)
Compressor 3(Cp3)
Right suction
Cp1 Cp2 Cp3 Trio model Suction from Kit code noto order
Washer reference
Washer inner diameter
Washer in suction of
DSH140 DSH140 DSH140 DSH420Left
120Z0672
5312497P05 26mm (102inch) CP15312497P06 24mm (094inch) CP3
Right5312639P04 245mm (096inch) CP15312639P04 245mm (096inch) CP3
DSH161 DSH161 DSH161 DSH483Left
120Z0684
5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
Right5312497P05 26mm (102inch) CP15312497P01 25mm (098inch) CP3
DSH184 DSH184 DSH184 DSH552Left
120Z0685
5312497P04 27mm (106inch) CP15312497P06 24mm (094inch) CP3
Right5312497P08 265mm (104inch) CP15312639P04 245mm (096inch) CP3
DSH240 DSH240 DSH240 DSH720Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH295 DSH295 DSH295 DSH885Left 120Z0673 5311579P08 30mm (118inch) Cp3
Right 7777039 5311579P03 345mm (136inch) Cp1 and Cp3
DSH381 DSH381 DSH381 DSH1140Left 120Z0686 5311579P01
5311579P0531mm (122inch)
and29mm (114inch)
Cp1and Cp3
Right 120Z0688 5311579P01 31mm (122inch) Cp1
DSH381 DSH381 DSH485 DSH1245Left
7777063 5311579P05 29mm (114 inch) Cp1Right
DSH485 DSH485 DSH381 DSH1350Left
7777063 5311579P05 29mm (114inch) Cp3Right
DSH485 DSH485 DSH485 DSH1455Left
7777040 5311579P02 33mm (13inch) Cp2 and Cp3Right
+
+ +
+ +
+ +
+
+
+
+
+
+
+
+
+
+
+
=
=
=
=
=
=
=
=
=
On trio models
Compressor 1(Cp1)
Compressor 2(Cp2)
Compressor 3(Cp3)
24 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The organ pipe needs to be installed in the direction indicated by the label attached on pipe
surface which will ensure best oil balanceR
Oil equalization design
The oil level is balanced by a pipe of 118 oil equalization line
In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization
port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used
DSH180E to DSH368E
Tightening torque 100Nm
Organ pipe
25FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design piping
Included in tandem kitSupplied with the compressor
The oil level is balanced by a pipe of 138 oil equalization line
In order to ensure best oil balance the organ pipe need to be mounted inside the DSH120 161 or 184 oil equalization port as indicated on below picture DSH240 295 or 381 has integrated organ pipe inside the oil equalization port
To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used
For DSH120 DSH161 or DSH184
DSH360X-424X-456X-479X-565X
DSH482-535 DSH590 to DSH1455
Tightening torque 100Nm
Organ pipe
The oil level is balanced by a pipe of 138 or 158 To connect the equalization line on rotolock connections the adaptor sleeves
included in the tandem or trio accessory kit must be used
For DSH240 DSH295 or DSH381
Tightening torque 145Nm
Tightening torque 145Nm
Included in tandem kit
26 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
DSH090-105-120-140-161-184 mounting
DSH240-295-381-485 mounting
Design compressor mounting
General requirements
Single requirements
Compressors used in single applications must be mounted with flexible grommets
Compressors used in parallel applications must be mounted with rigid spacers onto rails and
the manifold assembly must be mounted with flexible grommets onto the frame
During operation the maximum inclination from the vertical plane must not exceed 3 degrees
Compressors DSH090-105-120-140-161-184 are delivered with rubber grommets and steel mounting sleeve used to isolated the compressor from the base frame
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH090-105-120-140-161-184 compressors is HM8-40 This bolt must be tightened to a torque of 15Nm
15mm (059 inch)
HM 8 bolt
Lock washer
Flat washer
Steel mountingsleeve
Rubber grommet
Nut
Tightening torque 15 Nm
To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138
The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size for the DSH240-295-381-485 compressors is HM8-55 This bolt must be tightened to a torque of 21Nm
HM 8 boltLock washer
Flat washer
Steel mounting sleeve
Rubber grommet
Nut
275 mm(108 inch)
Compressorbase plate
Rubber grommets fromkit 8156138
27FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
Tandem requirements
DSH180E to DSH368E mounting
The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails
The rigid mounting spacers are included in tandem accessory kits The rubber grommets are supplied with compressor
For more details about parallel mounting feet please see parallel unit outline drawing
Included in tandem kitNot supplied
Supplied with the compressor
Not supplied Φ8x75mm031x295inch
Tightening torque15Nm
4mm(016 inch) thickness
Tightening torque15Nm
28 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Design compressor mounting
DSH360X-424X-456X-479X-565X mounting
DSH482 to DSH1455 mounting
The large compressor DSH240 295 or 381 is mounted with rigid spacers on the rails The DSH120 161 or 184 compressor is fixed on beams
by rigid spacer and the beams are mounted with rigid spacers on the rails Rubber grommets and spacers must be installed below the rails
DSH120-161-184
For parallel mounting the compressors can be mounted directly on the rails Rubber grommets
and spacers must be installed below the rails These parts are included in accessories
except DSH565
5mm(02inch) thickness
4mm (016inch) thickness
Tightening torque 15Nm
Included in tandem kitNot supplied
Supplied with the compressor
Tightening torque 50Nm
HM10 x100 class 109
5mm(02inch) Thickness
HM 10x30 class 109
Tightening torque 50 Nm
Included in tandemtrio kitNot supplied
DSH240-295-381
Tightening torque16Nm
Not supplied Φ10mm
Tightening torque50Nm
5mm(02inch) thickness
Tightening torque55Nm
29FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Test Ndeg Purpose Test conditions Pass criteria Solutions
1 Check proper oil return
Lowest foreseeable evaporation and highest foreseeable condensationMinimum number of compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight) Above 3 look for potential oil trap in the system2 Integrate a function in control logic to run all compressors simultaneously in order to boost oil return (for more details see section ldquoControl Logicrdquo)3 Oil separator can be added
2 Check oil balancing Lowest foreseeable evaporation
and highest foreseeable condensationAll compressor running for 6 hours
For reversible system perform test in both heating and cooling mode
Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped
1 Top-up with oil generally 3 of the total system refrigerant charge (in weight)2 Check that manifold piping is conform to Danfoss requirements3 Integrate a function in control logic to stop manifold periodically in order to balance oil (for more details see section ldquoControl Logicrdquo)
3 Oil return in split systems
Since each installation is unique test 1 and 2 can not fully validate the oil return Oil level must be checked and adjusted at commissioning
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
1 Pay special attention to ldquoPiping designrdquo2 Oil separator is strongly recommended espacially in case of part load
A
Manage oil in the circuit
RRequirement
System evaluation
Test criteria and solutions
Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped
Single compressor Manifold compressors
Non split Test Ndeg1 Test Ndeg1+2
Split Test Ndeg1+3 Test Ndeg1+2+3
A
30 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Typical sounds and vibrations in systems can be broken down into the following three categoriesbull Sound radiation (through air)bull Mechanical vibrations (through parts and
structure)
bull Gas pulsation (through refrigerant)The following sections focus on the causes and methods of mitigation for each of the above sources
Compressor sound radiation
For sound radiating from the compressors the emission path is air and the sound waves are travelling directly from the machine in all directions
Sound levels are similar with R410A and R452B and are as followsbull For compressors running alone
Compressor model
50 HZ 60 HZAcoustic hoodcode numberSound power
dB(A)Attenuation
dBA Sound power
dB(A)Attenuation
dBA
DSH090 73 6 76 6 120Z0034
DSH105 75 6 78 6 102Z0035
DSH120 75 6 78 6 120Z0035
DSH140 76 6 79 6 120Z0035
DSH161 76 6 79 6 120Z0035
DSH184 78 6 81 6 120Z0135
DSH240 82 6 85 4 120Z0022
DSH295 82 6 85 4 120Z0022
DSH381 89 6 91 4 120Z0022
DSH485 89 4 91 4 120Z0022
Sound power and attenuation are given at ARI conditions measured in free space For DSH381code 3 use acoustic hood reference 120Z0579No acoustic hood available for DSH485 code 3 Attenuation given with acoustic hood
bull For compressors running simultaneously
- the global sound level of ldquonrdquo identical compressors isLGLOBAL = Li + 10 Log10 nExample for the trio DSH720 = 3 x DSH240 (50 Hz)LDSH240 = 82dB(A)LDSH720 = 82 + 10 Log10 3 = 868dB(A)
Example for the tandemDSH424 = DSH184+DSH240 (50 Hz)LDSH184 = 78dB(A) LDSH240 = 82dB(A)LDSH424 =10 Log10(1001x78+1001x82) = 835dB(A)
LGLOBAL = 10 Log10(sum 1001Li)i=n
i=1
- the global sound level of ldquonrdquo different compressors with respectively Li sound level is
31FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage sound and vibration
Model CompositionSound power dB(A)
50 Hz 60 Hz
Tandem
DSH180E 2timesDSH090 760 790
DSH195U DSH090 + DSH105 770 800
DSH210U DSH090 + DSH120 770 800
DSH210E 2timesDSH105 780 810
DSH230U DSH090 + DSH140 780 810
DSH240E 2timesDSH120 780 810
DSH251U DSH090 + DSH161 780 810
DSH260U DSH140 + DSH120 785 815
DSH274U DSH090 + DSH184 790 820
DSH281U DSH161 + DSH120 785 815
DSH280E 2timesDSH140 790 820
DSH289U DSH105 + DSH184 800 830
DSH301U DSH161 + DSH140 790 820
DSH304U DSH120 + DSH184 800 830
DSH322E 2timesDSH161 790 820
DSH324U DSH140 + DSH184 800 830
DSH345U DSH161 + DSH184 800 830
DSH368E 2timesDSH184 810 840
DSH360X DSH120 + DSH240 830 865
DSH424X DSH184 + DSH240 835 870
DSH456X DSH161 + DSH295 830 870
DSH479X DSH184 + DSH295 835 870
DSH565X DSH184 + DSH381 875 895
DSH482E 2xDSH240 850 880
DSH535U DSH240+DSH295 850 880
DSH590E 2xDSH295 850 880
DSH620U DSH240+DSH381 880 910
DSH675U DSH295+DSH381 880 910
DSH760E 2xDSH381 900 920
DSH725U DSH240+DSH485 900 920
DSH780U DSH295+DSH485 900 920
DSH865U DSH381+DSH485 910 930
DSH970E 2xDSH485 920 940
Trio
DSH420 3xDSH140 810 840
DSH483 3xDSH161 810 840
DSH552 3xDSH184 830 860
DSH720 3xDSH240 870 910
DSH885 3xDSH295 870 910
DSH1140 3xDSH381 920 940
DSH1245 2xDSH381+DSH485 925 945
DSH1350 DSH381+2xDSH485 930 950
DSH1455 3xDSH485 940 960
32 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Mitigations methodsWe can consider two means to reduce compressors sound radiations1 Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors Acoustic hoods are available from Danfoss as accessories Refer to the tables above for sound levels attenuation and code numbers
2 Use of sound-insulation materials on the inside of unit panels is also an effective mean to reduce sound radiation
Note During compressor shut down a short reverse rotation sound is generated The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds This phenomenon has no impact on compressor reliability
Manage sound and vibration
Mechanical vibrations
Gas pulsation
A compressor generates some vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120microm peak to peak for DSH090 to DSH184 and 154microm peak to peak for DSH240 to DSH485 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon
A high vibration level is damageable for piping reliability and generates high sound levels
Mitigations methods1 To ensure minimum vibrations transmission to the structure strictly follow Danfoss mounting
requirements (mounting feet rails etc) For further information on mounting requirements please refer to section ldquoDesign compressor mountingrdquo
2 Ensure that there is no direct contact (without insulation) between vibrating components and structure
3 To avoid resonance phenomenon pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60 Hz) Solutions to change natural frequencies are to work on structure stiffness and mass (brackets metal sheet thickness or shapehellip)
DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio Manifolded compressors are equivalents to lagged sources of gas pulsation Therefore pulse level can vary during time
Mitigations methodsIf an unacceptable level is identified a discharge muffler with the appropriate resonant volume and mass can be installed
33FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
RRequirement The operating envelopes for DSH scroll compressors are given in the figures below and guarantees reliable operations of the compressor for steady-state operation
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage
Operating envelope R410ADSH090 to DSH184
Operating envelope R410ADSH240 to DSH485
Cond
ensi
ng te
mpe
ratu
re (deg
C)
Cond
ensi
ng te
mpe
ratu
re (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
SH = 5 K (9degF)
SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)
SH = 30 K(54degF)
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
34 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage operating envelope
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Con
dens
ing
tem
per
atur
e (deg
F)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 5 K (9degF)SH = 30 K(54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Evaporating temperature (degC)
-40
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature (degF)
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86C
onde
nsin
g te
mp
erat
ure
(degF)
41
50
59
68
77
86
95
104
113
122
131
140
149
158
SH = 30 K(54degF)SH = 5 K (9degF)
Operating envelope R452BDSH090 to DSH105
Operating envelope R452BDSH120 to DSH184
Operating envelope R452BDSH240 to DSH485
Note The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors composing the tandem
35FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Pressure settings R410A R452B
Working range high side bar(g) 99-447 92-392psig 144-648 133-569
Working range low sidebar(g) 17-155 17-144psig 25-225 25-209
Maximum high pressure safety switch settingbar(g) 461 406psig 669 589
Minimum low pressure safety switch settingbar(g) 15 15psig 22 22
Minimum low pressure pump-down switch settingbar(g) 15 bar below nominal evap pressure with
minimum of 17 bar(g)
psig 22 psi below nominal evap pressure with minimum of 25psig
High and low pressure protection
Discharge temperature protection
DSH090 to DSH184
DSH240 to DSH485
Manage operating envelope
R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors
LP switch auto restart must be limited to 5 times within 12 hours
HP safety switch must be reset manually
Depending on application operating envelope you must define HP and LP limits within operating envelope and pressure setting table above
Discharge line
Insulation
Bracket
Thermostat
For DSH090-105-120-140-161-184 compressors the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope
The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown on the right DGT installation must respect below requirements
bull The thermostat must be attached to the discharge line within 150mm (591inch) from
the compressor discharge port and must be thermally insulated and tightly fixed on the pipe
bull The DGT should be set to open at a discharge gas temperature of 135degC (275degF) or lower
DSH240-295-381-485 compressors include an integrated discharge gas temperature protection excessive discharge temperature will result in tripping of electronic module output relay
This protection is effective within a suction superheat range from 5 to 30K (9 to 54degF)
Con
dens
ing
tem
per
atur
e (deg
C)
Con
dens
ing
tem
per
atur
e (deg
F)
Evaporating temperature (degC)
Evaporating temperature (degF)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
Example 2
LP2
DGT - limit
LP1
R410A
Example 1HP1
HP2
Example 1 (R410A SH = 11K) LP switch setting LP1 = 38 bar (g) (-15degC) HP switch setting HP1 = 38 bar (g) (62degC) Risk of operation beyond the applica-tion envelope DGT protection required
Example 2 (R410A SH = 11K) LP switch setting LP2 = 47 bar (g) (-10degC) HP switch setting HP2 = 31 bar (g) (52degC) No risk of operation beyond the application envelope No DGT protection required
36 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
System evaluation HP and LP must be monitored to respect operating envelope limitations We consider two types of operating envelope management
Basicbull HP and LP switchbull MOP (Max Operating Pressure) ensured by expansion
devicebull Condensing pressure controlbull DGT external
Advancedbull HP and LP sensorbull Operating envelope limits integrated into control
logicbull DGT external
See ldquoTest criteria and solutionsrdquo
HP switch setting
MO
P lt
Max
eva
p Tdeg
LP s
witc
h se
ttin
gCondensing pressure control
DGT
tests No 1 and 2
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
1 Ensure compressor
operate within envelope
Start test at minimum foreseeable evaporating temperature (minimum
ambient temerature) Continuous running within envelope Work on compressor staging fan staging water flow etc
2 Perform a defrost test if reversible unit
Manage operating envelope
For DSH090 to DSH184
37FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Test criteria and solutions
Test Ndeg Purpose Test condition Pass criteria Solutions
Liquid flood back test
Steady-stateLiquid flood back testing must be carried out under expansion valve threshold operating conditionsbull Lowest foreseeable evaporation and highest foreseeable condensationbull Minimum number of compressor running
For reversible system perform test in both heating and cooling mode
Suction superheat gt5K (9degF)and the oil superheat shall not be more than 60 sec below the safe limit defined in the Dilution Chart (see graph below) 1 Check expansion valve selection
and setting bull For Thermostatic expansion valve (TXV) check bulb positionbull For Electronic expansion valve (EXV) check measurement chain and PID2 Add a suction accumulator
Transient
Tests must be carried out with most unfavorable conditions bull fan staging bull compressor stagingbull hellip
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
Defrost testCheck liquid floodback during defrost cycle
Defrost test must be carried out in the most unfavorable conditions (at 0degC (32degF) evaporating temperature)
Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilution Chart (see graph below)
1 Check defrost logic In reversible systems the defrost logic can be worked out to limit liquid floodback effect (for more details see ldquoControl Logicrdquo)2 Add a suction accumulator
Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor The accumulator should be sized at least 50 of the total system charge Suction accumulator dimensions can impact oil return (gas velocity oil return hole sizehellip) therefore oil return has to be checked according to section ldquoManage oil in the circuitrdquo
A
During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state
Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor
Requirement
System evaluation
In steady state conditions the expansion device must ensure a suction superheat within 5K to 30K (9 to 54degF)
Use the table in relation with the application to quickly evaluate the potential tests to perform Application Tests to perform
Non reversible Liquid flood back test
Reversible Liquid flood back test Defrost test
38 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage superheat
Dilution Chart (reference at 20degC 68degF ambient temperature)
225
25
20
175
15
125
10
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
-13-22 -4 5 14 23 32 41 50 59 68 77
25
0
405
45
36
315
27
225
18
135
9
45
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Evaporating Temperature degFO
il Su
perh
eat (
K)
Oil
Supe
rhea
t (degF)
Dilution Chart (reference at 20degC 68degF ambient temperature)
10
15
125
75
5
-25-30 -20 -15 -10 -5 0 5 10 15 20 25
25
0
Unsafe Area (60 sec max per hour)
Safe Area
Evaporating Temperature degC
Oil
Supe
rhea
t (K)
-13-22 -4 5 14 23 32 41 50 59 68 77
Evaporating Temperature degF
50
545
59
455
41
365
32
Oil
Supe
rhea
t (degF)
Oil temperature sensor must be placed between the oil sight glass and the compressor baseplate Some thermal paste shall be used to improve the conductivity The sensor must also be correctly thermally insulated from the ambiance
The Oil superheat is defined as (Oil temperature - Evaporating temperature)
DSH090 to DSH184 R410A R452B
DSH240 to DSH485R410A R452B
39FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Manage off cycle migration
R
Requirement
System evaluation
Off -cycle refrigerant migration happensbull when the compressor is located at the coldest
part of the installation refrigerant vapor condenses in the compressor
bull or directly in liquid-phase by gravity or pressure difference When the compressor restarts
the refrigerant diluted in the oil or stored in evaporator generates poor lubrication conditions and may reduce bearings life time In extreme situations this leads to liquid slugging that can damage the compressor scroll set
bull Compressor can tolerate occasional flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start
bull Right after start liquid refrigerant must not flow massively to compressor
bull The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start
Use the table below in relation with the system charge and the application to quickly define necessary safeties to implement
Application BELOW charge limit ABOVE charge limit
All
Ensure tightness between condenser amp evaporator when system is OFFbull Thermostatic expansion Valve (TXV) Liquid Line Solenoid Valve LLSV strongly
recommendedbull Electronic expansion valve (EXV) must close when system stop including in power shut
down situationbull With R452B an External Non-Return Valve is recommended
Non split No test or additional safeties required bull Surface Sump Heater bull External Non-Return Valve
SplitSince each installation is unique refrigerant charge may vary bull Surface Sump Heater bull Liquid Line Solenoid Valve+ pump-down cyclebull External Non-Return Valve
Surface Sump heaterThe surface sump heater are designed to protect the compressor against off-cycle migration of refrigerantFor DSH090-105-120-140-161-184 the surface sump heater is located on the compressor shell For better standby energy consumption Danfoss provides 48W and 80W two optional surface sump heater The selection of surface sump heater could refer to below principle
For DSH240-295-381-485 the 56W surface sump seater is located below the sump associated with a thermal insulation
Compressor Surrounding Ambient Surface Sump Heater
Unit has enclosure no wind 48W SSH
Unit has no enclosure with wind 80W SSH
Unit has no enclosure wind gt5ms (fts)amp ambient temperature lt-5degC
80W SSH + additional SSHthermal insulation
The heater must be turned on whenever all the compressors are offSurface sump heater accessories are available from Danfoss (see section ldquoAccessoriesrdquo) Liquid line solenoid valve (LLSV)A LLSV is used to isolate the liquid charge on the condenser side thereby preventing
against charge transfer to the compressor during off -cycles The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV
DSH090 to 184
DSH240 to
DSH485
40 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Models CompositionRefrigerant charge limit
kg lbs
Single
DSH090 8 18DSH105 10 22DSH120 10 22DSH140 10 22DSH161 10 22DSH184 10 22DSH240 15 33DSH295 15 33DSH381 17 37DSH485 17 37
Tandem
DSH180E 2timesDSH090 12 26DSH195U DSH090 + DSH105 12 26DSH210U DSH090 + DSH120 12 26DSH210E 2timesDSH105 12 26DSH230U DSH090 + DSH140 12 26DSH240E 2timesDSH120 12 26DSH251U DSH090 + DSH161 12 26DSH260U DSH140 + DSH120 12 26DSH274U DSH090 + DSH184 12 26DSH281U DSH161 + DSH120 12 26DSH280E 2timesDSH140 14 31DSH289U DSH105 + DSH184 12 26DSH301U DSH161 + DSH140 14 31DSH304U DSH120 + DSH184 12 26DSH322E 2timesDSH161 14 31DSH324U DSH140 + DSH184 14 31DSH345U DSH161 + DSH184 14 31DSH368E 2timesDSH184 14 31DSH360X DSH120 + DSH240 14 31DSH424X DSH184 + DSH240 14 31DSH456X DSH161 + DSH295 14 31DSH479X DSH184 + DSH295 14 31DSH565X DSH184 + DSH381 14 31DSH482E 2xDSH240 21 46DSH535U DSH240 + DSH295 21 46DSH590E 2xDSH295 25 55DSH620U DSH240 + DSH381 21 46DSH675U DSH295 + DSH381 25 55DSH760E 2xDSH381 29 64DSH725U DSH240 + DSH485 21 46DSH780U DSH295 + DSH485 25 55DSH865U DSH381 + DSH485 29 64DSH970E 2xDSH485 34 75
Trio
DSH420 3xDSH140 14 31DSH483 3xDSH161 14 31DSH552 3xDSH184 14 31DSH720 3xDSH240 21 46DSH885 3xDSH295 25 55DSH1140 3xDSH381 29 64DSH1245 2xDSH381 + DSH485 29 64DSH1350 DSH381 + 2xDSH485 29 64DSH1455 3xDSH485 34 75
Manage off cycle migration
Charge limits are defined in the table below
Pump-down cycleBy decreasing pressure in the sump pump down systembull evacuates refrigerant from oilbull set the sump saturating pressure much lower than ambiance temperature and due to that avoid refrigerant condensation in the compressorPump-down must be set higher than 17bar(g) (25 psig)
For more details on pump-down cycle see section ldquoControl Logicrdquo External non-return valve is only for DSH090-105-120-140-161-184DSH240-295-381-485 have integrated internal non-return valve
41FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Requirementsbull Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit breaker set to Max operating current or lower (see table in section ldquoThree phase electrical characteristicsrdquo) For DSH090-105-120-140-161-184 phase sequence protection is strongly recommended
bull Compressor models DSH240-295-381-485 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on
bull HP safety switch DGT (only for DSH090 to DSH184) and electronic module relay output (M1-M2 only for DSH240 to DSH485) must be wired in the safety chain Other safety devices such as LP can be either hardware or software managed
bull Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg seasonal shutdown)
The wiring diagrams below are examples for a safe and reliable compressor wiring
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNITCONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor DGTCompressor motor MSurface sump heater SSHThermal magnetic motor circuit breaker CBPhase sequence relay Ph
42 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Compressor model DSH240-295-381
MPM
S
SSH
CCSS
LPS
UNITCONTROLLER
KM
DGT
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
Legends
Provide power supply and electrical protection
43FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Provide power supply and electrical protection
Compressor model DSH485 code 3
1
2
3
L1 L3 L2
7
8
9L1
L3L3
L2L2
S
L1
MPM MPM
LPS
UNITCONTROLLER
KM
KM
CCSS
CB
SSH
Legends
Compressor model DSH485 except code 3
SSH
CONTROLCIRCUIT
LPS
UNITCONTROLLER
SEPARATESUPPLY
KM
DGT
MPM
S
CB
Fuses F1Compressor contactor KMHigh pressure safety switchHPSafety pressure switch LPS Discharge gas thermistor (embedded in compressor) DGTCompressor motor MMotor Protection Module MPMThermistor chain (motor and discharge temperature) SSurface sump heater SSHThermal magnetic motor circuit breaker CB
44 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors
Soft starter must be set so compressor start-up time is always less than 05 seconds to ensure proper lubrication of compressor parts
Ramp-down must be set to minimum to ensure proper discharge valve closingDanfoss MCI and MCD soft-start controller are available as accessories MCI and MCD can reduce the inrush current up to 40
Selection table
Compressor model Soft start referenceAmbient max 40degC
Soft start referenceAmbient max 55degC
DSH090 code 4 MCI15C MCI15CDSH105-120 code 4 MCI25C MCI25CDSH140-161 code 4 MCI25C MCI25CDSH184-240 code 4 MCI50CM MCI50CM
DSH295 code 4 MCI50CM MCI50CMDSH381 code 4 MCI50CM MCI50CMDSH485 code 4 MCD201-055 MCD201-055DSH485 code 3 MCD5-0195B-T5 MCD5-0195B-T5
bull MCI15C MCI25C MCI50CM replaces the contactor KM All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
bull MCI25M MCI50CM requires a by-pass contactor K1 This configuration is needed to withstand current or temperature levels All settings such as initial torque ramp-up time (less than 05 sec) and ramp-down time are preset and do not require any modification
See wiring diagram
Q1
Provide power supply and electrical protection
R
Frequency Initial torque (U) Voltage Ramp-up (seconds) Ramp-down (seconds)
50 Hz 60 2 060 Hz 70 05 0
bull For MCD201-055 the following settings have to be adjusted
bull For MCD5-0195B-T5 constant current mode has to be used with Current Limit Initial Current set at 400A
45FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Safety control logic requirements
Cycle rate limit requirements
Oil management logic recommendations
Defrost logic recommendations Reversible systems
Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling
Additionally compressor must not exceed 12 starts per hour
In some cases oil management can be enhanced by control logicbull If oil return test failed a function can be integrated in control logic to run all compressors simultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine-tuned by oil return test Ndeg1 in section ldquoManage oil in the circuitrdquo During oil boost pay special attention to superheat management to avoid liquid flood back
bull In manifold system after running long time in full load oil unbalance may appears A function can be implemented in control logic to stop all manifold compressors during one minute every two hours in order to balance oil Time and delay can be fine-tuned by Oil balancing test Ndeg2 in section ldquoManage oil in the circuitrdquo
In reversible systems the defrost logic can be worked out to limit liquid flood back effect by1 Running full load during defrost to share liquid refrigerant between all compressors
2 Reducing refrigerant flooding to compressor by transferring liquid refrigerant from one exchanger to the other before reversing valve thanks pressures
The following defrost logic combines both advantages
Defro
st sta
rt St
op all c
ompre
ssors
4 Way
Valve (
4WV) s
tays
in h
eatin
g
mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
outdoor t
o indoor e
xchan
ger th
anks
to p
ress
ure d
iffer
ence
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to co
oling m
ode
When
pre
ssure
s are
alm
ost bala
nced
chan
ge 4W
V to h
eatin
g mode
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Star
t Cp1 a
nd Cp 2
with 0
5 sec
onds
delay b
etwee
n 2 su
cces
sive s
tarts
Defro
st en
d Sto
p all c
ompre
ssors
4 WV st
ays i
n coolin
g mode
EXV o
pened
to tr
ansfe
r liq
uid fr
om
indoor t
o outd
oor exc
hanger
than
ks
to p
ress
ure d
iffer
ence
Defro
st
EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve movingIn any case defrost logics must respect requirements and tests described in sections ldquoManage superheatrdquo and ldquoManage operating enveloperdquo
In reversible systems to ensure compressor reliability the 4-way valve must not reverse when the compressor is stopped due to heating or cooling demand (stop on thermostat)
Compressor 1
Compressor 2
4WV
EXV
ON
ON
Heating
100
SafetiesTripping conditions Re-start conditions
Value Time Value Time
HP safety switchSee Pressure settings table
from section ldquoManage operating enveloperdquo Immediate no delay
No by-passConditions back to normal
Switch closed again
Manual reset
LP safety switchMaximum 5 auto reset during
a period of 12 hours then manual reset
Electronic module (Motor protection DGT) Contact M1-M2 opened
Maximum 5 auto reset during a period of 12 hours then
manual reset only for DSH240 to DSH485
R
46 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Control logic
Pump-down logic recommendations
Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut-out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve remains closedTwo types of pump-down exist
bull One shot pump down (preferred) when last compressor of the circuit stops suction presssure is decreased 15bar (22psi) below nominal evaporating pressure with minimum of 17bar(g) (25psig) Even if suction pressure increases again the compressor will not restart
bull Continuous pump-down traditional pump-down Compressor restarts automatically when suction pressure increases up to 4 cycles maximum
For DSH090 to DSH184 an external Non Return Valve (NRV) in the discharge line is recommended DSH240 to DSH485 compressors
integrate tight internal non return valve (INRV) therefore no external Non Return Valve (NRV) is needed
47FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Reduce moisture in the system
Excessive air and moisture bull can increase condensing pressure and cause
high discharge temperaturesbull can create acid giving rise to copper plattingbull can destroy the lubricating properties of the oil
All these phenomena can reduce service life and cause mechanical and electrical compressor failure
Requirements
Solutions
DSH compressors are delivered with lt 100ppm moisture level At the time of commissioning system moisture content may be up to 100ppm
During operation the filter drier must reduce this to a level between 20 and 50ppm
To achieve this requirement a properly sized and type of drier is required Important selection criteriarsquos includebull driers water content capacitybull system refrigeration capacity bull system refrigerant charge
For new installations with DSH compressors with polyolester oil Danfoss recommends using the Danfoss DML (100 molecular sieve) solid core filter drier
R
48 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Compressor holding charge
Handling
Compressor storage
Each compressor is shipped with a nominal dry nitrogen holding charge between 03bar (4 psi) and 07bar (10psi) and is sealed with elastomer plugs
Respect the following sequence to avoid discharge check valve gets stuck in open position
bull Remove the suction plug firstbull Remove the discharge plug afterwards
R An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil
Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shellbull Always use both these rings when lifting the
compressor bull Use lifting equipment rated and certified for
the weight of the compressor or compressor assembly
bull A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution
bull The use of lifting hooks closed with a clasp is recommended
bull For tandem and trio assemblies use a spreader bar and all compressor rings as shown in picture below
bull Never use the lift rings on the compressor to lift the full unit
Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15deg from vertical)
Store the compressor not exposed to rain corrosive or flammable atmosphere between -35degC (-31degF) and 70degC (158degF) when charged
with nitrogen and between -35degC (-31degF) and Ts max value (see section Pressure equipment directive) when charged with refrigerant
Spreader bar
HEAVY
do not liftmanually
Spreader bars
Slings
Frame
49FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor life time (system cleanliness brazing procedure etc)
System cleanliness
Circuit contamination possible cause Requirement
Brazing and welding oxides During brazing flow nitrogen through the system
Particles and burrs Remove any particles and burrs generated by tube cutting and hole drilling
Moisture and airUse only clean and dehydrated refrigeration grade copper tubingOpened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by oil
Brazing procedurebull Brazing operations must be performed by
qualified personnelbull Make sure that no electrical wiring is connected
to the compressorbull To prevent compressor shell and electrical box
overheating use a heat shield andor a heat-absorbent compound
bull Clean up connections with degreasing agentbull Flow nitrogen through the compressorbull Use flux in paste or flux coated brazing rodbull Use brazing rod with a minimum of 5 silver
content
bull It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection
bull For discharge connections brazing time should be less than 2 minutes to avoid NRVI damages if any
bull To enhance the resistance to rust a varnish on the connection is recommended
Before eventual un-brazing of the compressor or any system component the refrigerant charge must be removed
System pressure test and leak detection The compressor has been strength tested
and leak proof tested (lt3gyear) at the factory For system testsbull Always use an inert gas such as Nitrogen or
Helium
bull Pressurize the system on HP side first then LP side
bull Do not exceed the following pressures indicated in table below
On DSH240-295-381-485 (models with internal non return valve in discharge fitting) or if an external non return valve is present on the discharge line the maximum pressurizing
speed must be respected to ensure pressure equalization between LP and HP side over scroll elements
Maximum compressor test pressures DSH090-105-120-140-161-184 DSH240-295 -381-485
Maximum compressor test pressure high side (HP)
487bar (g) (706psig)HP-LPlt37bar (537psi)
Maximum compressor test pressure low side (LP)
333 bar (g) (483psig)LP-HPlt5bar (73psi)
Maximum speed 48bars (70psis)
343bar (g) (497psig)LP ndash HP lt5bar (73psi)
Maximum speed 48bars (70psis)
heat shield
C B A
50 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Assembly line procedure
Vacuum evacuation and moisture removal
Refrigerant charging
Dielectric strength and insulation resistance tests
Requirements bull Never use the compressor to evacuate the
system bull Connect a vacuum pump to both the LP and HP
sides bull Evacuate the system to a pressure of 500 μm Hg
(067 mbar002 inHg) absolute
Recommendationsbull Energized heaters improve moisture removalbull Alternate vacuum phases and break vacuum
with Nitrogen to improve moisture removal
For more detailed information see ldquoVacuum pump-down and dehydration procedurerdquo TI-026-0302
Initial chargebull For the initial charge the compressor must not
runbull Charge refrigerant as close as possible to the
nominal system chargebull This initial charging operation must be done in
liquid phase between the condenser outlet and the filter drier
If needed a complement of charge can be done before evaporator in liquid phase while compressor is running by slowly throttling liquid inNever bypass safety low pressure switch
For more detailed information see ldquoRecommended refrigerant system charging practiceldquo FRCCEN050
Several tests have been performed on each compressor at the factory between each phase and ground
bull Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least and leakage current must be less than 5 mA
bull Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm
Recommendationsbull Additional dielectric test is not recommended
as it may reduce motor lifetime Nevertheless if such as test is necessary it must be performed at a lower voltage
bull Insulation resistance test can be donebull The presence of refrigerant around the
motor windings will result in lower resistance values to ground and higher leakage current readings Such readings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant
Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage
R
R
R
51FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Commissioning
Preliminary checkCheck electrical power supply
bull Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090-184 compressors equipped with internal reverse vent valve which can protect compressor without damage within duration below 24h For more details refer to section ldquoPhase sequence and reverse rotation protectionrdquo
For DSH240 to DSH485 compressors equipped with an electronic module reverse rotation will be automatically detected For more details refer to section Motor protectionbull Voltage and voltage unbalance within tolerance
For more details refer to section ldquoMotor voltagerdquo
Initial start-up
System monitoring
bull Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant
bull A quicker start-up is possible by ldquojoggingrdquo the compressor to evacuate refrigerant Start the
compressor for 1 second then wait for 1 to 2 minutes After 3 or 4 jogs the compressor can be started This operation must be repeated for each compressor individually
The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as bull Correct superheat and subcoolingbull Current draw of individual compressors within
acceptable values (max operating current)bull No abnormal vibrations and noisebull Correct oil level
If Oil Top-up is needed it must be done while the compressor is idle Use the schrader connector or any other accessible connector on the compressor suction line Always use original Danfoss POE oil 160SZ from new cans For more detailed information see ldquoLubricants filling in instructions for Danfoss Commercial Compressorsrdquo TI 2-025-0402
52 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Dismantal and disposal
Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site
53FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Packaging
Single pack
Industrial pack
Compressor modelLength Width Height Gross weight
mm inch mm inch mm inch kg lbs
DSH090 565 222 470 185 718 283 69 152
DSH105 565 222 470 185 718 283 76 168
DSH120 565 222 470 185 718 283 76 168
DSH140 565 222 470 185 718 283 79 174
DSH161 565 222 470 185 718 283 81 179
DSH184 565 222 470 185 718 283 84 185
DSH240 760 299 600 236 900 354 124 273
DSH295 760 299 600 236 900 354 127 279
DSH381 760 299 600 236 900 354 174 383
DSH485 760 299 600 236 900 354 191 420
Compressor model NbrLength Width Height Gross
weight Static stacking palletsmm inch mm inch mm inch kg lbs
DSH090 8 1150 453 950 374 680 268 494 1089 2
DSH105 8 1150 453 950 374 750 295 544 1199 2
DSH120 8 1150 453 950 374 750 295 544 1199 2
DSH140 8 1150 453 950 374 750 295 566 1248 2
DSH161 8 1150 453 950 374 750 295 582 1283 2
DSH184 8 1150 453 950 374 750 295 606 1336 2
DSH240 6 1150 453 965 38 768 302 693 1528 2
DSH295 6 1150 453 965 38 768 302 712 1570 2
DSH381 4 1150 453 965 38 800 315 678 1494 2
DSH485 4 1150 453 965 38 800 315 744 1640 2
nbr number of compressors per pack
54 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Single pack
Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs Please use the code numbers from below tables for ordering
Compressors DSH090 to DSH184 are delivered with flexible grommets
For compressors DSH240 to DSH485 use in single applications flexible grommets are available as accessory kit 8156138
Compressor code numbers
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1182 - -
DSH105 Brazed Internal - 120H1190 - -
DSH120 Brazed Internal - 120H1198 - -
DSH140 Brazed Internal - 120H1206 - -
DSH161 Brazed Internal - 120H1214 - -
DSH184 Brazed Internal - 120H1222 - -
DSH240Brazed Module 24V AC - 120H1376 - -
Brazed Module 110-240V - 120H1374 - -
DSH295Brazed Module 24V AC - 120H1372 - -
Brazed Module 110-240V - 120H1370 - -
DSH381Brazed Module 24V AC - 120H1368 - -
Brazed Module 110-240V - 120H1366 - -
DSH485Brazed Module 24V AC - 120H1364 - -
Brazed Module 110-240V - 120H1362 - -
Electronic motor protection module located in terminal boxMounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R452B and R410A
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1180 - 120H1184 120H1186
DSH105 Brazed Internal 120H1188 - 120H1192 120H1194
DSH120 Brazed Internal 120H1196 - 120H1200 120H1202
DSH140 Brazed Internal 120H1204 - 120H1208 120H1210
DSH161 Brazed Internal 120H1212 - 120H1216 120H1218
DSH184 Brazed Internal 120H1220 - 120H1224 120H1226
DSH240Brazed Module 24V AC 120H1291 120H1331 120H1299 120H1315
Brazed Module 110-240V 120H1289 120H1329 120H1298 120H1313
DSH295Brazed Module 24V AC 120H1287 120H1327 120H1297 120H1311
Brazed Module 110-240V 120H1285 120H1325 120H1296 120H1309
DSH381Brazed Module 24V AC 120H1283 120H1323 120H1295 120H1307
Brazed Module 110-240V 120H1281 120H1321 120H1294 120H1305
DSH485Brazed Module 24V AC 120H1344 120H1319 120H1293 120H1303
Brazed Module 110-240V - 120H1317 120H1292 120H1301
Electronic motor protection module located in terminal box Will be available Q2 2019Mounting kit for DSH240-295-381-485 single compressor applications Ref 8156138
Compressors compatible R410A only
55FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal - 120H1183 - -
DSH105 Brazed Internal - 120H1191 - -
DSH120 Brazed Internal - 120H1199 - -
DSH140 Brazed Internal - 120H1207 - -
DSH161 Brazed Internal - 120H1215 - -
DSH184 Brazed Internal - 120H1223 - -
DSH240Brazed Module 24V AC - 120H1375 - -
Brazed Module 110-240V - 120H1373 - -
DSH295Brazed Module 24V AC - 120H1371 - -
Brazed Module 110-240V - 120H1369 - -
DSH381Brazed Module 24V AC - 120H1367 - -
Brazed Module 110-240V - 120H1365 - -
DSH485Brazed Module 24V AC - 120H1363 - -
Brazed Module 110-240V - 120H1361 - -
Electronic motor protection module located in terminal box
Compressor model Connections Motor protection
Code no3 4 7 9
200-230360 380-415350460360 575360 380-400360
DSH090 Brazed Internal 120H1181 - 120H1185 120H1187
DSH105 Brazed Internal 120H1189 - 120H1193 120H1195
DSH120 Brazed Internal 120H1197 - 120H1201 120H1203
DSH140 Brazed Internal 120H1205 - 120H1209 120H1211
DSH161 Brazed Internal 120H1213 - 120H1217 120H1219
DSH184 Brazed Internal 120H1221 - 120H1225 120H1227
DSH240Brazed Module 24V AC 120H1290 120H1330 - 120H1314
Brazed Module 110-240V 120H1288 120H1328 - 120H1312
DSH295Brazed Module 24V AC 120H1286 120H1326 - 120H1310
Brazed Module 110-240V 120H1284 120H1324 - 120H1308
DSH381Brazed Module 24V AC 120H1282 120H1322 - 120H1306
Brazed Module 110-240V 120H1280 120H1320 - 120H1304
DSH485Brazed Module 24V AC 120H1343 120H1318 - 120H1302
Brazed Module 110-240V - 120H1316 - 120H1300
Electronic motor protection module located in terminal box Will be available Q2 2019
Industrial pack
Compressors compatible R452B and R410A
Compressors compatible R410A only
56 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Tandem Model Cp1 Cp2 Suction From Tandem Kit Code No Mounting kit
DSH180E DSH090 DSH090 Left 120Z0634
Not needed
Right
DSH195U DSH090 DSH105 Left 120Z0694Right
DSH210U DSH090 DSH120 Left 120Z0694Right
DSH210E DSH105 DSH105 Left 120Z0634Right
DSH230U DSH090 DSH140 Left 120Z0694Right
DSH240E DSH120 DSH120 Left 120Z0634Right
DSH251U DSH090 DSH161 Left 120Z0694Right
DSH260U DSH120 DSH140 Left 120Z0692Right
DSH274U DSH090 DSH184 Left 120Z0693Right
DSH281U DSH120 DSH161 Left 120Z0692Right
DSH280E DSH140 DSH140 Left 120Z0634Right
DSH289U DSH105 DSH184 Left 120Z0693Right
DSH301U DSH140 DSH161 Left 120Z0692Right
DSH304U DSH120 DSH184 Left 120Z0694Right
DSH322E DSH161 DSH161 Left 120Z0634Right
DSH324U DSH140 DSH184 Left 120Z0694Right
DSH345U DSH161 DSH184 Left 120Z0694Right
DSH368E DSH184 DSH184 Left 120Z0634Right
DSH360X DSH120 DSH240 Left 120Z0709Right
DSH424X DSH184 DSH240 Left 120Z0709Right
DSH456X DSH161 DSH295 Left 120Z0709Right
DSH479X DSH184 DSH295 Left 120Z0709Right
DSH565X DSH184 DSH381 Left 120Z0709Right
DSH482E DSH240 DSH240 Left 7777041Right
DSH535U DSH240 DSH295 Left 7777037Right
DSH590E DSH295 DSH295 Left 7777041Right
DSH620U DSH240 DSH381 Left 7777048Right
DSH675U DSH295 DSH381 Left 7777037Right
DSH725U DSH240 DSH485 Left 120Z0569Right
DSH760E DSH381 DSH381 Left 7777041Right
DSH780U DSH295 DSH485 Left 120Z0551Right
DSH865U DSH381 DSH485 Left 120Z0550Right
DSH970E DSH485 DSH485 Left 120Z0578Right
Tandem kits By default DSH tandems and trios are not factory-built To complete an assembly in the field you will need- Tubings according to specific outline drawings- Manifolding accessory kit indicated below
- CompressorsNote that to get a tandem compatible with R452B you have to make sure that each compressor composing the tandem is R452B compatible
For example Tandem DSH535U- Compressor 1 DSH240 Code number 120H1122 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 2 DSH295 Code number 120H1126 (Motor code 4110-240V electronic moduleIndustrial pack)- Tandem kit DSH535U Code number 7777037
For example Tandem DSH324U- Compressor 1 DSH140 Code number 120H1207 (Motor code 4 Industrial pack)- Compressor 2 DSH184 Code number 120H1223 (Motor code 4 Industrial pack)- Tandem kit DSH324U 120Z0647
57FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Ordering codes
Trio kits By default DSH tandems and trios are not factory-builtTo complete an assembly in the field you will need- Tubings according to specific outline drawings
- Manifolding accessory kit indicated below- CompressorsNote that to get a trio compatible with R452B you have to make sure that each compressor composing the trio is R452B compatible
Trio model Cp1 Cp2 Cp3 Suction from Trio Kit code ndeg Mounting kit
DSH420 DSH140 DSH140 DSH140Left
120Z0672
Not needed
Right
DSH483 DSH161 DSH161 DSH161Left
120Z0684Right
DSH552 DSH184 DSH184 DSH184Left
120Z0685Right
DSH720 DSH240 DSH240 DSH240Left 120Z0673
Right 7777039
DSH885 DSH295 DSH295 DSH295Left 120Z0673
Right 7777039
DSH1140 DSH381 DSH381 DSH381Left 120Z0686
Right 120Z0688
DSH1245 DSH381 DSH381 DSH485Left
7777063Right
DSH1350 DSH381 DSH485 DSH485Left
7777063Right
DSH1455 DSH485 DSH485 DSH485Left
7777040Right
=
=
=
=
=
=
=
=
=
For example Trio DSH1245- Compressors 1 and 2 DSH381 Code number 120H1130 (Motor code 4110-240V electronic moduleIndustrial pack)- Compressor 3 DSH485 Code number 120H1134 (Motor code 4110-240V electronic moduleIndustrial pack)- Trio kit DSH1245 Code number 7777063
For example Trio DSH420- Compressor 1 2 and 3 DSH140 Code number 120H1207- Trio kit DSH420 Code number 120Z0672
58 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Solder sleeve
Solder sleeve adapter set
Rotolock adapter
Gaskets
Code no Description Application Packaging Pack size
120Z0125 Rotolock adaptor set (134 ~ 118) (114 ~ 78) DSH090 Multipack 8
120Z0405 Rotolock adaptor set (134 ~ 138) (114 ~ 78) DSH105 to 184 Multipack 8
7765028 Rotolock adaptor set (214 ~ 158) (134 ~ 118) DSH240-295-381 Multipack 6
120Z0504 Rotolock adaptor set (214 ~ 158) (134 ~ 138) DSH485 Multipack 6
Code no Description Application Packaging Pack size
120Z0367 Adaptor (114 Rotolock - 78 ODS) Models with 78 ODF Multipack 10
120Z0364 Adaptor (134 Rotolock - 118 ODS) Models with 118 ODF Multipack 10
120Z0431 Adaptor (134 Rotolock - 138 ODS) Models with 138 ODF Multipack 10
120Z0432 Adaptor (214 Rotolock - 158 ODS) Models with 158 ODF Multipack 10
Code no Description Application Packaging Pack size
8156131 Gasket 114 Models with 114 rotolock connection Multipack 10
7956002 Gasket 114 Models with 114 rotolock connection Industry pack 50
8156132 Gasket 134 Models with 134 rotolock connection Multipack 10
7956003 Gasket 134 Models with 134 rotolock connection Industry pack 50
8156133 Gasket 214 Models with 214 rotolock connection Multipack 10
7956004 Gasket 214 Models with 214 rotolock connection Industry pack 50
Code no Description Application Packaging Pack size
8153004 Solder sleeve P02 (134 Rotolock - 118 ODF) Models with 134 rotolock connection Multipack 10
8153008 Solder sleeve P04 (114 Rotolock - 34 ODF) Models with 114 rotolock connection Multipack 10
8153012 Rotolock connector P05 (114 Rotolock - 78 ODF) Models with 114 rotolock connection Multipack 10
8153013 Solder sleeve P07 (134 Rotolock - 78 ODF) Models with 134 rotolock connection Multipack 10
8153003 Solder sleeve P10 (134 Rotolock - 138 ODF) Models with 134 rotolock connection Multipack 10
8153006 Solder sleeve P03 (214 Rotolock - 158 ODF) Models with 214 rotolock connection Multipack 10
59FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Rotolock nut
Accessories
Rotolock service valve set
3-phase soft start equipment
Code no Description Application Packaging Pack size
8153123 Rotolock nut114 Models with 1-14 rotolock connection Multipack 10
8153124 Rotolock nut134 Models with 1-34 rotolock connection Multipack 10
8153126 Rotolock nut 214 Models with 2-14 rotolock connection Multipack 10
Code no Description Application Packaging Pack size
7703008 Valve set V02 (134 ~ 118) V05 (114 ~ 78) DSH090 Multipack 6
7703392 Valve set V10 (134 ~138) V05 (114 ~ 78) DSH105 to 184 Multipack 6
7703383 Valve set V03 (214 ~ 158) V02 (134 ~ 118) DSH240-295-381 Multipack 4
120Z0547 Valve set V03 (214 ~ 158) V10 (134 ~ 138) DSH485 Multipack 4
diameter restriction
Code no Description Application Packaging Pack size
7705006 Electronic soft start kit MCI 15 C DSH090 Single pack 1
7705007 Electronic soft start kit MCI 25 C DSH105 to 184 Single pack 1
037N0401 Electronic soft start kit MCI50CM DSH240-295-381 Single pack 1
175G5205 Electronic soft start kit MCD201-055-T6-CV1 DSH485 Single pack 1
175G5510 Electronic soft start kit MCD5-0195B-T5 DSH485 code 3 Single pack 1
Motor protection modules
Code no Description Application Packaging Pack size
120Z0584 Electronic motor protection module 24 V AC DSH240-295-381-485 Single pack 1
120Z0585 Electronic motor protection module 115240 V DSH240-295-381-485 Single pack 1
120Z0624 Electronic motor protection module 24V AC DSH485 code 3 Single pack 1
except DSH485 code 3
60 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Mounting hardware
Surface sump heaters
Code no Description Application Packaging Pack size
120Z0667 48W 24V surface sump heater CE and UL
DSH090 to 184
Single pack 1
120Z0668 48W 230V surface sump heater CE and UL Single pack 1
120Z0669 48W 400V surface sump heater CE and UL Single pack 1
120Z0670 48W 460V surface sump heater CE and UL Single pack 1
120Z0671 48W 575V surface sump heater CE and UL Single pack 1
120Z0388 80W 24V surface sump heater CE and UL Multipack 8
120Z0389 80W 230V surface sump heater CE and UL Multipack 8
120Z0390 80W 400V surface sump heater CE and UL Multipack 8
120Z0391 80W 460V surface sump heater CE and UL Multipack 8
120Z0402 80W 575V surface sump heater CE and UL Multipack 8
120Z0703 56W 24V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0704 56W 230V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0705 56W 400V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0706 56W 460V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
120Z0707 56W 575V surface sump heater + bottom insulation CE amp UL DSH240-295-381-485 Multipack 6
Discharge temperature protection
Code no Description Application Packaging Pack Size
7750009 Discharge thermostat kit DSH090 to 184 Multipack 10
7973008 Discharge thermostat kit DSH090 to 184 Industry pack 50
Code no Description Application Packaging Pack Size
120Z0066 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH090 to 184 Single pack 1
8156138 Mounting kit for scroll compressors Grommets sleeves bolts washers DSH240 to 485 in single installation Single pack 1
61FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Acoustic hoods
Miscellaneous
Code no Description Packaging Pack Size
8156019 Sight glass with gaskets (black amp white) Multipack 4
8156129 Gasket for oil sight glass 118 (white teflon) Multipack 10
7956005 Gasket for oil sight glass 118 (white teflon) Multipack 50
8154001 Danfoss Commercial Compressors blue spray paint Single pack 1
Terminal boxes covers and T-block connectors
Code no Description Application Packaging Pack Size
120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
8156135 Service kit for terminal box 96 x 115 mm including 1 cover 1 clamp
DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173230 T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack 10
8173021 T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3DSH240-295-381 Multipack 10
8173331 T block connector 80x80 mm DSH240-295-381 code 3 DSH485 Multipack 10
120Z0458 Terminal box 210 x 190 mm incl cover DSH240-295-381-485 Single pack 1
120Z0150 Terminal box cover DSH381 code 3 Single pack 1
120Z0604 Terminal box 210x340mm incl cover DSH485 code 3 Single pack 1
except code 3
Code no Description Application Packaging Pack Size
120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1
120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH161-140 code3) Single pack 1
120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1
120Z0022 Acoustic hood for scroll compressor DSH240-295-381-485 Single pack 1
120Z0579 Acoustic hood for scroll compressor DSH381 code 3 Single pack 1
120Z0353 Bottom insulation for scroll compressor DSH240-295-381-485 Single pack 1
except code 3
Lubricant
Code no Description Packaging Pack Size
7754023 POE lubricant 1 litre can Multipack 12
120Z0571 POE lubricant 25 litre can Multipack 4
62 FRCCPC055A202
GEN
ERA
L IN
FORM
ATIO
NPR
OD
UCT
INFO
RMAT
ION
SYST
EM D
ESIG
NIN
TEG
RATI
ON
INTO
SYS
TEM
ORD
ERIN
G IN
FORM
ATIO
N
Accessories
Tandem kits
Code no Description Application Packaging Pack Size
120Z0634 Suction washer rigid spacer organ pipe gasket DSH180E-210E-240E-280E-322E-368E Single pack 1
120Z0692 Suction washer rigid spacer organ pipe gasket DSH260U-281U-301U Single pack 1
120Z0693 Suction washer rigid spacer organ pipe gasket DSH274U-289U Single pack 1
120Z0694 Suction washer rigid spacer organ pipe gasket DSH195U-210U-230U-251U-304U-324U-345U Single pack 1
120Z0660 Suction washer rigid spacer organ pipe gasket DSH274 Single pack 1
120Z0709 Suction washer rigid spacer grommets organ pipe sleeve gasket DSH360X-424X-456X-479X-565X Single pack 1
7777041 Suction washer grommets sleeve for oil connect DSH482590760 Single pack 1
7777037 Suction washer grommets sleeve for oil connect DSH535675 Single pack 1
7777048 Suction washer grommets sleeve for oil connect DSH620 Single pack 1
120Z0569 Suction washer grommets sleeve for oil connect DSH725 Single pack 1
120Z0550 Suction washer grommets sleeve for oil connect DSH865 Single pack 1
120Z0551 Suction washer grommets sleeve for oil connect DSH780 Single pack 1
120Z0578 Suction washer grommets sleeve for oil connect DSH970 Single pack 1
Trio kits
Code no Description Application Packaging Pack Size
120Z0672 Organ pipe sleeves rigid spacer gasket rubber grommet DSH420 Single pack 1
120Z0684 Organ pipe sleeves rigid spacer gasket rubber grommet DSH483 Single pack 1
120Z0685 Organ pipe sleeves rigid spacer gasket rubber grommet DSH552 Single pack 1
7777039 Suction washer grommets sleeve for oil connect DSH720885 (right suction) Single pack 1
120Z0673 Suction washer grommets sleeve for oil connect DSH720885 (left suction) Single pack 1
7777040 Suction washer grommets sleeve for oil connect DSH 1455 (left and right suction) Single pack 1
120Z0688 Suction washer grommets sleeve for oil connect DSH1140 (right suction) Single pack 1
120Z0686 Suction washer grommets sleeve for oil connect DSH1140 (left suction) Single pack 1
7777063 Suction washer grommets sleeve for oil connect DSH12451350 Single pack 1
63FRCCPC055A202
Danfoss Cooling is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs
We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business and positioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents
FRCCPC055A202 copy Danfoss | DCS (CC) | 201901
Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes
wwwdanfosscom
Danfoss Inverter Scrolls
Danfoss Turbocor Compressors
Danfoss Scrolls
Danfoss Optymatrade Condensing Units
Danfoss Maneurop Reciprocating Compressors
Danfoss BP 331 01603 Treacutevoux Cedex France | +334 74 00 28 29
Danfoss Light Commercial RefrigerationCompressors
- General Information
- Features
-
- Overview
- How do IDVs work
-
- Compressor model designation
-
- Nomenclature
-
- Technical specifications
-
- 50-60Hz dataSingle compressor
- Performances 50-60 Hz R410ASingle compressor
- Performances 50-60 Hz R452BSingle compressor
- Tandem and trio performances
-
- Dimensions
-
- Single compressors
- Connection Details
- Tandem assemblies
- Trio assemblies
-
- Electrical data connections and wiring
-
- Motor voltage
- Wiring connections
- IP rating
- Terminal box temperature
- Three phase electrical characteristics
- Motor protection
-
- Approval and certificates
-
- Low voltage directive
- Machines directive
- Pressure equipment directive
- Internal free volume
-
- Design piping
-
- General requirements
- Tandem and trio requirements
- Suction washer position
- Oil equalization design
-
- Design compressor mounting
-
- General requirements
- Single requirements
- Tandem requirements
- DSH180E to DSH368E mounting
- DSH360X-424X-456X-479X-565X mounting
- DSH482 to DSH1455 mounting
-
- Manage oil in the circuit
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage sound and vibration
-
- Compressor sound radiation
- Mechanical vibrations
- Gas pulsation
-
- Manage operating envelope
-
- Requirement
- High and low pressure protection
- Discharge temperature protection
- System evaluation
- Test criteria and solutions
-
- Manage superheat
-
- Requirement
- System evaluation
- Test criteria and solutions
-
- Manage off cycle migration
-
- Requirement
- System evaluation
-
- Provide power supply and electrical protection
-
- Wiring information
- Soft starts
-
- Control logic
-
- Safety control logic requirements
- Cycle rate limit requirements
- Oil management logic recommendations
- Defrost logic recommendations Reversible systems
- Pump-down logic recommendations
-
- Reduce moisture in the system
-
- Requirements
- Solutions
-
- Assembly line procedure
-
- Compressor storage
- Compressor holding charge
- Handling
- Piping assembly
- System pressure test and leak detection
- Vacuum evacuation and moisture removal
- Refrigerant charging
- Dielectric strength and insulation resistance tests
-
- Commissioning
-
- Preliminary check
- Initial start-up
- System monitoring
-
- Dismantal and disposal
- Packaging
- Ordering codes
- Accessories
-