active chilled beams induction units · active chilled beams and induction units for ceiling...
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The Innovation Company
LTG Aktiengesellschaft
Technical Documentation
Active Chilled BeamsInduction UnitsCeiling Installation
Example :Active chilled ceamtype HDF 300
LTG AktiengesellschaftD - 70435 Stuttgart, Grenzstraße 7 +49 (711) 82 01-0, Fax +49 (711) 82 01-720Internet: www.LTG-AG.deE-Mail: [email protected]
LTG Incorporated105 Corporate Drive, Suite ESpartanburg S.C., 29303 USA +1 (864) 599-6340, Fax +1 (864) 599-6344Internet: www.LTG-INC.netE-Mail: [email protected]
LTG S.r.l. con socio unicoVia G. Leopardi 10I-20066 Melzo +39 (02) 9 55 05 35, Fax +39 (02) 9 55 08 28Internet: www.LTG-SRL.comE-Mail:[email protected]
Ind-Decke-eng-TP-01 (03/11) 416-88
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 2 of 36
Active chilled beams and induction units for ceiling installation
Content Page
Active chilled beams and induction unitsKlimavent® 3
Product overview active chilled beams andinduction units for ceiling installation
3
Active chilled beam type HDF 300 4
Active chilled beam type HDF 600 15
Active chilled beam type HDC 21
Air conditioning system Indivent® 28
Ceiling induction unit type LHG 30
Ceiling induction unit type HFM 2500 35
NotesDimensions stated in this brochure are in mm.
Dimensions stated in this brochure are subject to GeneralTolerances according to DIN ISO 2768-vL.For the outlet grille special tolerances stated in the drawingapply.
Straightness and twist tolerances for extruded aluminumprofiles according to DIN EN 12020-2.
The surface finish is designed to meet the requirements forapplications in buildings - room climate according to DIN1946 part 2. Other requirements on request.
The actual tender documentations are at the end of thisdocument.They are available in word format at your local dealershipor at www.LTG-AG.de.
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 3 of 36
Active chilled beams and induction units for ceiling installation
LTG offers air diffusion by various techniques:
- Tangential flow from the ceiling
- Mixed flow from the ceiling
- Indivent flow (mixed/displacement air) from the ceiling
Active chilled beams and induction units KlimaventR areunits for induction systems.
The induction unit is a combined air and water system:
- The air system ensures air replenishment and room airmoisture control.
- The water system, which is particularly economical forthe transportation of energy, additionally heats or coolsthe air using heat exchangers.
This provides the twomost significant features of the induc-tion unit: energy-saving mode of operation and low spacerequirements.
Mode of OperationThe primary air (usually the fresh air requirement) from thecentral air conditioning unit is discharged through nozzlesat high speed. Simultaneously, it draws back-in secondaryair from the room.The secondary air flows into the unit through a heat ex-changer and is heated or cooled.The primary air is mixed with the heated or cooled second-ary air inside the unit and flows into the room through anoutlet grille or diffuser.
TypesLTG offers different types and sizes for any application.The main distinctive feature of the LTG induction units isthe way the temperature is controlled
Two-pipe systemThe unit has only one heat exchanger through whichchilled water flows for cooling and hot water for heating.Thus, it is only possible to either heat or cool in a single wa-ter circuit.
Four-pipe systemThe unit has two separate water systems, one for heating,the other for cooling. Thus, chilled and hotwater will alwaysremain separate. The four-pipe system fulfills all require-ments on varying loads and small control zones.
Valve control (water-side control)The heating or cooling output of the heat exchanger is con-trolled by modifying the water flow.
Damper control (air-side control)The heating or cooling output is controlled by modifying theflowof secondary air. Adjustable dampers guide the aircur-rent through the air cooler or the air heater or they divert thesecondary air through a bypass avoiding the heat ex-changer.
Product overview active chilled beams and induction units for ceiling installation
Type Activechilled beamtype HDF 300
Activechilled beamtype HDF 600
Activechilled beamtype HDC
Induction unittype LHG
Induction unittype HFM 2500
View ofunits
Application Modular ceiling system for ventilation us-ing processed outside air and individualtemperature control of rooms based onthe induction principle, i.e. without the useof a fan.
Dry cooling without dehumidification andcondensate drainage
Specifically de-signed for low bandgrid ceilings. In thecooling mode, thefacade-heated airenters the unit theshortest way and isimmediately chilled
Induction unit withattached linear dif-fuser LDB, for safeand draught-freeremoval of heat andairborne sub-stances from theroom.
Air-conditioning oflarge halls that re-quire ventilation,heating and cool-ing.
Water syst. 2-pipe system, 4-pipe system
Variants Low install. heightFresh air unitBlind diffuser
Fresh air unitBlind diffuser
Blind diffuser Water-side controlAir-side control ---
Installation In T-bar, grid and plasterboard ceilings
Flanged, recessed
In multi-level / sus-pended ceilings,ceiling panels
In concrete ceilings
Supply airpattern
In two directions In four directions In one direction In two directions(linear diffuserLDB)
In one direction(exhaust air socket
The Innovation Company
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E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 4 of 36
Active chilled beams and induction units for ceiling installationActive chilled beam type HDF 300
View of unit
Active chilled beam type HDF 300
SpecificationThe active chilled beam type HDF has been designed asa modular ceiling unit conditioning rooms with view to hu-midity and temperature based on the induction principle,i.e. without the use of a fan.
Installation, positioningIts low construction height allows installation in false ceil-ings offering limited space. The thus resulting low differ-ence in height between the heat exchanger and the ceilinglevel has been considered in the chilled beam's designwhich is suitable for dry cooling without dehumidificationand condensate drainage.
The reduced construction width and the freely selectablelength allow an easy integration in 300 or 312mm grid ceil-ings. Unit lengths from 1200mm to band installation (withina 300 mm grid system) may be realized.
The type of construction, which provides complete separa-tion from the ceiling cavity, suppresses sound transmissionfrom adjacent rooms (telephony sound insulation).
Functional PrincipleRoom air humidity is controlled through the centrally dehu-midified supply air avoiding involuntary dehumidification in-side the chilled beam. The 2-pipe system may be used foreither cooling only or change-over operation with cooling/reheating. The 4-pipe system with independent water cir-cuits automatically switches from cooling to heating andvice versa.
During operation, the primary air is 100% pretreated out-side air via a centralRTL unit. It assures theuse-dependentbasic ventilation using outside air, e.g. in conformity withDIN EN 13779 or DIN EN 15251 recommendations.Through uniformly arranged nozzles over the entire unitlength, the primary air is led in an injector-type diffuserwhich induces secondary air.Depending on the room load,this secondary air is either heated or chilled in a 2-pipe or4-pipe heat exchanger.
The supply air, a mixture of primary and secondary air, isexpelled into the room in two directions via ceiling jet.
Advantages Low primary air pressures between 50 and 100 Pa- Low-noise operation; sound pressure may be selectedso as to remain below 35 dB(A)
- High secondary (water-side) output of up to 350 W/m
- Excellent air flow balance of the units that form one ductrun
- Energy-efficient operation
Flexible nozzle design- May be selected for design terminal pressure
- Primary air flowmay be selected according to roomusebetween 20 and 100 m3/h/m
- Non combustible metal nozzles
Low installation height- 230 mm standard
- 160 mm type HDF-N
Efficient heat exchanger- High heating capacity evenwith lowLPHWsupply tem-peratures (e.g. 30 _C)
- High cooling capacity with high CHW supply temperat-ures (e.g. 16 _C)
- Low water flow rates designed for a temperature rangeof 3 K
Flexible connection of media- Primary air connection with NW 100 on the longitudinalside (standard)
- Water connections on unit top surface for convenientLH/RH pipework
Easy maintenance design- Easily removable secondary air grille
- No protective air filter required for the heat exchanger.
Perfect integration in false ceilings- Width 295 mm, recessed installation
- Width 319 mm, flanged installation
Pleasing design- Air diffuser construction from aluminium profiles
- Visible surfaces powder coated e.g. similar toRAL 9010
- Secondary air grille in the form of an expanded metalpanel (open surface > 63%)
- Secondary air grille in the form of a perforated sheetgrille optional (square perforation)
Easy commissioning- Measuring equipment to determine the air flow rate(standard)
- Pressure balancing via perforated sheet throttledamper
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LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 5 of 36
Active chilled beams and induction units for ceiling installationActive chilled beam type HDF 300
DesignActive chilled beam type HDF300 in the sizes1200, 1500, 1800 and 2100 as:
- 4-pipe system for cooling and heating
- 2-pipe system for cooling or heating
- Flanged installation or recessed installation
- Throttling damper KLI
Variants- HDF-N - low installation height
- HDF-L - fresh air unit
- HDF-B - blind diffuser
Materials and FinishPrimary air duct of galvanized sheet steel, nozzle duct andinduction nozzles of black coated sheet steel, 1 mm thick,longitudinal profiles of aluminum, either anodized orpowder coated similar to RAL.
Secondary air grille of galvanized sheet steel, powdercoated to match the air diffuser frame.
Accessories- Return air connection NW 100, integrated in the diffuserframe
- Unit extension in the form of a blind diffuser, to be usedfor the construction lengths required on site
- Sheetmetal console for valve connection on unit top-sideor end
- Thermal control valves
- Flexible water connections with 12 mm quick coupling
DimensionsSee drawings on the next pages.
L1 - 21
L2 - 27
L1
28,5
295
170
295 1,5
28,5
61,5 319 1,5
Air diffuser frame, recessed installation
Air diffuser frame, flanged installation
Air diffuser frame, flanged installation
Air diffuser frame, recessed installation
SizeL1 recessed[mm]
L2 flanged[mm]
L3[mm]
L4[mm]
L5[mm]
Weight[kg]
1200 1195 1219 982 560 660 17
1500 1495 1519 1282 710 810 22
1800 1795 1819 1582 860 960 27
2100 2095 2119 1882 1010 1110 32
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E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 6 of 36
Active chilled beams and induction units for ceiling installationActive chilled beam type HDF 300
Dimensions
Front view
Top view
Lateral view 4-pipe-unitshown: air diffuser frame flanged installation
SocketDN 100
L2
L3
229
229
319
169
16080
4xØ12
Lateral view 2-pipe-unitshown: air diffuser frame recessed installation
SocketDN 100
80
2xØ12
Top view
169
229
Front view
Suspension points withinsulating spacers forM8 threaded rods 4 x Ø 11
L3
229
319Ø
100
L2
L5
L4
Air inlet
Primary air
Air outlet Air outlet
Version with return air DN 100
Standard version
Air inlet
Primary air
Air outlet Air outlet
Suspension points withinsulating spacers forM8 threaded rods 4 x Ø 11
Connection forquick coupling
Connection forquick coupling
Measuring device forflow rate determination
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E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 7 of 36
Active chilled beams and induction units for ceiling installationActive chilled beam type HDF 300
Dimensions variant HDF-N - low installation height
Lateral view
160446
80
Suspension points withinsulating spacers forM8 threaded rods 4 x Ø 11
4653
8
67
Measuring device forflow rate determination
Ø 12
Top view
Front view
L1
DN 100
295
L3
163
229
475950
Dimensions variant HDF-L - fresh air unit
Lateral view
Top view
Front view
Suspension points withinsulating spacers forM8 threaded rods 4 x Ø 11
DN 100
119
229
60
L1
L3
295
8229
Measuring device forflow rate determination
Dimensions variant HDF-B - blind diffuser
100
50
295
Lateral view
Top view
Front view
Suspension points withinsulating spacers forM8 threaded rods
291
L1
50
L3
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E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 8 of 36
Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 300
Technical data size 1200 - 4-pipe system - cooling and heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
14 50 15 21 5 21 214
120 / 5.1
17 298
80 / 2.1
18 80 21 27 6 25 249 19 344
22 120 27 33 7 28 281 22 386
22 50 16 22 7 23 230 18 316
28 80 22 28 9 27 271 21 371
34 120 28 34 11 31 310 23 421
35 50 17 23 11 25 254 19 345
44 80 24 30 14 31 306 23 412
53 120 30 36 18 36 357 26 476
54 50 19 25 18 29 292 22 390
68 80 26 32 23 36 355 26 476
83 120 33 39 28 39 392 31 561
84 50 21 27 28 32 320 26 460
106 80 29 35 35 32 319 32 574
Technical data size 1500 - 4-pipe system - cooling and heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
18 50 16 22 6 28 278
150 / 6.0
22 387
100 / 2.5
23 80 23 29 8 32 323 25 448
28 120 29 35 9 37 365 28 502
29 50 17 23 10 30 298 23 411
36 80 24 30 12 35 353 27 482
44 120 30 36 15 40 404 30 548
45 50 19 25 15 33 330 25 448
57 80 26 32 19 40 398 30 535
70 120 33 39 23 46 464 34 619
70 50 21 27 23 38 380 28 507
89 80 29 35 29 46 462 34 618
108 120 36 42 36 51 509 41 730
109 50 25 31 36 42 416 33 598
138 80 33 39 46 42 415 42 747
Technical data size 1800 - 4-pipe system - cooling and heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
23 50 18 24 8 34 342
180 / 7.0
26 476
120 / 2.9
29 80 24 30 9 40 398 31 551
35 120 30 36 12 45 449 34 618
35 50 19 25 12 37 367 28 506
45 80 26 32 15 43 434 33 593
55 120 32 38 18 50 497 38 674
55 50 21 27 18 41 407 31 552
70 80 28 34 23 49 490 37 659
86 120 35 41 28 57 571 42 762
86 50 24 30 28 47 468 35 624
109 80 32 38 36 57 569 42 761
134 120 39 45 44 63 627 50 898
134 50 28 34 44 51 512 41 735
170 80 37 43 56 51 511 51 919
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E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 9 of 36
Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 300
Technical data size 2100 - 4-pipe-system - cooling and heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
27 50 19 25 9 41 406
200 / 7.1
41 735
130 / 3.0
34 80 26 32 11 47 473 47 851
42 120 32 38 14 53 533 53 954
42 50 20 26 14 44 436 43 780
53 80 27 33 18 52 515 51 916
65 120 34 40 22 59 590 58 1041
66 50 22 28 22 48 483 47 852
83 80 30 36 27 58 582 57 1017
102 120 37 43 33 68 679 65 1176
102 50 26 32 34 56 556 54 963
129 80 34 40 43 68 675 65 1175
159 120 42 48 52 74 744 77 1386
160 50 31 37 53 61 608 63 1135
201 80 41 47 67 61 606 79 1419
The chart shows examples for the unit design.A special se-lection program is available for other flow rates, primarypressures, temperatures and water flow rates.
Data refers to the unit including a secondary air grille² 63 % free surface
Correction for other flow rates see pages 12 - 14.
1) Water supply temperature: 16 _CAir inlet temperature or return air temperature: 26 _C
2) Water supply temperature: 40 _CAir inlet temperature or return air temperature: 22 _C
Legend
VP - primary air flow rate (¦3%)
p - static pressure at the primary air connection
LA18 - sound pressure level at 18 m2 Sabine (¦3 dB)
LwA - sound power level (¦ 3 dB)
QP - air-side cooling capacity (primary air ¦3%)
Qk - water-side cooling capacity (secondary ¦6%)
t - temperature difference between air inlet andwater supply
wok - standard water flow rate (cooling)
pw - water-side pressure loss
Qh - water-side heating capacity (secondary ¦6%)
woh - standard water flow rate (heating)
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 10 of 36
Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 300
Technical data size 1200 - 2-pipe system - cooling or heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
14 50 15 21 5 14 142
120 / 5.1
20 360
80 / 2.1
18 80 21 27 6 18 178 23 421
22 120 27 33 7 22 215 27 477
22 50 16 22 7 18 176 22 390
28 80 22 28 9 23 227 26 464
34 120 28 34 11 28 281 30 534
35 50 17 23 11 23 231 24 438
44 80 24 30 14 31 305 30 531
53 120 30 36 18 39 385 35 624
54 50 19 25 18 32 316 28 511
68 80 26 32 23 42 423 35 636
83 120 33 39 28 47 474 42 763
84 50 21 27 28 39 386 35 626
106 80 29 35 35 29 285 44 798
Technical data size 1500 - 2-pipe system - cooling or heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
18 50 16 22 6 18 184
150 / 6.0
26 468
100 / 2.5
23 80 23 29 8 23 231 30 547
28 120 29 35 9 28 280 35 620
29 50 17 23 10 23 229 28 507
36 80 24 30 12 30 296 34 603
44 120 30 36 15 37 366 39 695
45 50 19 25 15 30 300 32 569
57 80 26 32 19 40 397 38 691
70 120 33 39 23 50 501 45 811
70 50 21 27 23 41 411 37 664
89 80 29 35 29 55 550 46 826
108 120 36 42 36 62 617 55 992
109 50 25 31 36 50 502 45 813
138 80 33 39 46 37 371 58 1037
Technical data size 1800 - 2-pipe system - cooling or heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
23 50 18 24 8 22 226
180 / 7.0
32 576
120 / 2.9
29 80 24 30 9 28 284 37 674
35 120 30 36 12 34 344 42 763
35 50 19 25 12 28 282 35 625
45 80 26 32 15 36 364 41 742
55 120 32 38 18 45 450 48 855
55 50 21 27 18 37 370 39 700
70 80 28 34 23 49 488 47 850
86 120 35 41 28 62 616 56 998
86 50 24 30 28 51 506 45 818
109 80 32 38 36 68 677 57 1017
134 120 39 45 44 76 759 68 1221
134 50 28 34 44 62 618 56 1001
170 80 37 43 56 46 456 71 1276
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 11 of 36
Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 300
Technical data size 2100 - 2-pipe system - cooling or heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
27 50 19 25 9 41 406
200 / 7.1
49 890
130 / 3.0
34 80 26 32 11 47 473 58 1040
42 120 32 38 14 53 533 66 1178
42 50 20 26 14 44 436 54 964
53 80 27 33 18 52 515 64 1146
65 120 34 40 22 59 590 73 1320
66 50 22 28 22 48 483 60 1081
83 80 30 36 27 58 582 73 1312
102 120 37 43 34 68 679 86 1541
102 50 26 32 34 56 556 70 1262
129 80 34 40 43 68 675 87 1570
159 120 42 48 52 74 744 105 1885
160 50 31 37 53 61 608 86 1545
201 80 41 47 67 61 606 109 1970
The chart shows examples for the unit design.A special se-lection program is available for other flow rates, primarypressures, temperatures and water flow rates.
Data refers to the unit including a secondary air grille² 63 % free surface
Correction for other flow rates see pages 12 - 14.
1) Water supply temperature: 16 _CAir inlet temperature or return air temperature: 26 _C
2) Water supply temperature: 40 _CAir inlet temperature or return air temperature: 22 _C
Legend
VP - primary air flow rate (¦3%)
p - static pressure at the primary air connection
LA18 - sound pressure level at 18 m2 Sabine (¦3 dB)
LwA - sound power level(¦ 3 dB)
QP - air-side cooling capacity (primary air ¦3%)
Qk - water-side cooling capacity (secondary ¦6%)
t - temperature difference between air inlet andwater supply
wok - standard water flow rate (cooling)
pw - water-side pressure loss
Qh - water-side heating capacity (secondary ¦6%)
woh - standard water flow rate (heating)
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 12 of 36
Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 300
Cooling capacity with different water flow rates
40 60 80 100 12060
80
100
120
Coolingcapacityin%ofthenominalcapacityQk
140 160
70
90
110
2-pipe
4-pipe
Water flow rate in % of the standard water flow rate
Heating capacity with different water flow rates
40 60 80 100 12060
80
100
120
Water flow rate in % of the standard water flow rate
Heatingcapacityin%ofthenominalcapacityQh
140 160
70
90
110
2-pipe
4-pipe
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Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 300
Water-side pressure loss with different water flow rates, 4-pipe system - cooling
Water-sidepressureloss
[kPa]
Water flow rate w [kg/h]
50 100 150 200 250 300
1
10
Size 1200
Size 1500
Size 1800
Size 2100
Water-side pressure loss with different water flow rates, 4-pipe system - heating
50 100 150 200 250 300
1
10
Water-sidepressureloss
[kPa]
Water flow rate w [kg/h]
Size 1200
Size 1500
Size 1800
Size 2100
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Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 300
Water-side pressure loss with different water flow rates, 2-pipe system, cooling or heating
50 100 150 200 250 300
1
10
Water-sidepressureloss
[kPa]
Water flow rate w [kg/h]
Size 1200
Size 1500
Size 1800
Size 2100
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E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 15 of 36
Active chilled beams and induction units for ceiling installationActive chilled beam type HDF 600
View of unit
ApplicationThe active chilled beam HDF is a ceiling-mounted induc-tion unit for ventilation and individual temperature controlbased on the induction principle, i.e. without the use of afan, using processed outside air.
Installation, positioningThe low construction height (200 mm) allows installation infalse ceilings offering limited space. The thus resulting lowdifference in height between the heat exchanger and theceiling level has been considered in the chilled beam'sdesignwhich is suitable for dry cooling without dehumidific-ation and condensate drainage.
The chilled beam is suitable for installation in grid ceilingsmeasuring 600 x 600 mm, 600 x 1200 mm, 625 x 625 mmor 625 x 1250 mm and may be positioned in or adjacent toT-bar profiles. With grid and plasterboard ceilings, installa-tion may be edge-to-edge or overlapping.
Functional PrincipleDuring operation, the primary air is 100% pretreated out-side air via a central central AHU. It assures the use-de-pendent basic ventilation using outside air, e.g. in conform-ity with DINEN 13779 or DINEN 15251 recommendations.Through uniformly arranged nozzles over the entire unitlength, the primary air is led in an injector-type diffuserwhich induces secondary air.Depending on the room load,this secondary air is either heated or chilled in a 2-pipe or4-pipe heat exchanger.
The supply air, a mixture of primary and secondary air, isuniformly diffused to four sides into the room via preset, di-vergent ceiling jets covering all four room directions.
Room air humidity is controlled through the centrally dehu-midified supply air avoiding involuntary dehumidification in-side the chilled beam. The 2-pipe system may be used foreither cooling only or change-over operation with cooling/reheating. The 4-pipe system with independent water cir-cuits automatically switches from cooling to heating andvice versa.
The type of construction, which provides complete separa-tion from the ceiling cavity, suppresses sound transmissionfrom adjacent rooms (telephony sound insulation).
Advantages Low primary air pressures between 50 and 150 Pa- Low-noise operation; sound pressure may be selectedso as to remain below 35 dB(A)
- Very low SFP value for secondary air conveyance(< 0.04 kW/(m³/s)) possible
- High secondary (water-side) output with low primarypressure
- Excellent air flow balance of the units that form one ductrun
Flexible nozzle design- Six calibrated, well-matched jet combinations- Non combustible metal nozzles
- Exchangeable jet strip, optional
Low installation height (200 mm)- Installation possible in suspended ceilings of lowheight- Facilitates the crossing of lines
Efficient injector and heat exchanger- High specific secondary output even with low primaryair flow rate (in certain areas > 1W/K/(m³/h))
- High heating capacity evenwith lowLPHWsupply tem-peratures (e.g. 30 _C)
- Lower overtemperature in the heating mode, thus bet-ter ventilating efficiency
- High cooling capacity with high CHW supply temperat-ures (e.g. 16 _C)
- Low water flow rates designed for a temperature rangeof 3 K
Flexible connection of services- Primary air connection with NW 125 on the longitudinalside (standard)
- Air connection left or right, as required
- Eccentric air connection, if required, not conflicting withceiling suspension
- Water connections outside the unit on top inorder toen-able connection on the left or right
Easy maintenance design- Easy removal of secondary air grille, secured by moor-ing lines
- Easy access to and cleaning of heat exchanger andjets
- No protective air filter required for the heat exchanger.
Virtually draught-free indoor air flow- Optimized air distribution with steady, preset divergent,inductive ceiling jet
Attractive appearance- Visible surfaces powder coated e.g. sim. to RAL 9010- Secondary air grille in the form of a perforated sheetgrille (open surface > 63%)
Easy commissioning- Measuring equipment to determine the air flow rate(standard)
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Active chilled beams and induction units for ceiling installationActive chilled beam type HDF 600
DesignActive chilled beam type HDF 600 in the size600 x 1200 mm, as:
- 4-pipe-system for cooling and heating
- 2-pipe-system for cooling or heating
- Grid sizes 600 mm and 625 mm
- Throttling damper KLI
Materials and FinishPrimary air duct of galvanized sheet steel, nozzle duct andinduction nozzles of black coated sheet steel, 1 mm thick;secondary air grille of galvanized sheet steel, powdercoated similar to RAL.
Installation in different ceiling systems
593 / 1193 598 / 623 /1198 / 1248
570 / 1170
Accessories- Thermal control valves
- Flexible water connections with 12 mm quick coupling
Dimensions
593
375
74
42
96 452
Ø 12
649
45
59
67
536 60
View from below
Top view Detail A
Lateral view
33
A
Ø 125
1148
1178 ± 1
319
1193
199±1
593
70
452
Ø 11
Lateral view
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Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 600
Technical data size 600 x 1200, 2-pipe-system - cooling or heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP / t[W/K]
Qk/t[W/K]
Qk ges 1)
[W]wok /pw[kg/h]/[kPa]
Qh/t[W/K]
Qh ges 2)
[W]wok /pw[kg/h]/[kPa]
54 70 12 18 18 45 628
170 / 7
40 621
110 / 3
64 100 16 23 21 53 735 47 717
78 150 21 28 26 63 889 56 859
67 70 16 22 22 50 717 44 667
80 100 20 27 26 57 836 51 762
98 150 25 32 32 69 1006 61 906
84 70 19 26 27 54 816 48 705
100 100 24 30 33 62 949 55 800
122 150 29 35 40 74 1139 66 943
105 70 23 30 34 59 929 52 736
125 100 28 34 41 67 1079 60 828
153 150 33 39 50 79 1293 71 969
131 70 27 33 43 63 1059 56 756
156 100 31 38 51 72 1228 64 844
191 150 36 43 62 85 1470 75 979
167 70 31 37 55 68 1229 61 764
200 100 35 42 65 77 1425 69 843
Technical data size 600 x 1200, 4-pipe-system - cooling and heating
VP[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP / t[W/K]
Qk/t[W/K]
Qk ges 1)
[W]wok /pw[kg/h]/[kPa]
Qh/t[W/K]
Qh ges 2)
[W]wok /pw[kg/h]/[kPa]
54 70 12 18 18 41 583
170 / 7
29 421
110 / 1
64 100 16 23 21 48 694 35 498
78 150 21 28 26 60 856 43 612
67 70 16 22 22 46 681 33 462
80 100 20 27 26 55 807 39 539
98 150 25 32 32 67 987 46 645
84 70 19 26 27 52 792 37 497
100 100 24 30 33 61 933 43 571
122 150 29 35 40 73 1130 51 674
105 70 23 30 34 57 916 40 520
125 100 28 34 41 66 1071 46 584
153 150 33 39 50 78 1284 54 667
131 70 27 33 43 63 1052 43 525
156 100 31 38 51 71 1219 49 568
191 150 36 43 62 82 1442 55 614
167 70 31 37 55 67 1217 46 493
200 100 35 42 65 74 1394 49 497
The chart shows examples for the unit design.A special se-lection program is available for other flow rates, primarypressures, temperatures and water flow rates.
Data refer to the unit including a secondary air grille² 63 % free surface
Correction for other flow rates see page 18.
1) Water supply temperature: 16 _CAir inlet temperature or return air temperature: 26 _C
2) Water supply temperature: 40 _CAir inlet temperature or return air temperature: 22 _CPrimary air temperature: 16 °C
Legend
VP - primary air flow rate (¦3%)p - static pressure at the primary air connectionLA18 - sound pressure level at 18 m2 Sabine (¦3 dB)LwA - sound power level (¦ 3 dB)QP - air-side cooling capacity (primary air ¦3%)Qk - water-side cooling capacity (secondary ¦6%)t - temperature difference between air inlet and
water supplywok - standard water flow rate (cooling)pw - water-side pressure lossQh - water-side heating capacity (secondary ¦6%)woh - standard water flow rate (heating)
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Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 600
Cooling/heating capacity with differentwater flow rates for 2-pipe heat exchanger
Co
olin
g/h
eati
ng
cap
.in
%o
fn
om
inal
cap
.
Water flow rate [kg/h]
Capacity with different water flow rates for 4-pipe heat exchangerCooling capacity Heating capacity
0,60
0,70
0,80
0,90
1,00
1,10
1,20
50 70 90 110 130 150 170 190 210 230 250
Co
olin
gca
pac
ity
in%
of
no
min
alca
p.
Water flow rate [kg/h]
0,60
0,70
0,80
0,90
1,00
1,10
1,20
50 70 90 110 130 150 170 190 210 230 250
Hea
tin
gca
pac
ity
in%
of
no
min
alca
p.
Water flow rate [kg/h]
Water-side pressure loss for 2-pipe heat exchanger / 4-pipe heat exchanger
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
50 70 90 110 130 150 170 190 210 230 250
Wat
er-s
ide
pre
ssu
relo
ss[k
Pa]
Water flow rate [kg/h]
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
50 70 90 110 130 150 170 190 210 230 250
Wat
er-s
ide
pre
ssu
relo
ss[k
Pa]
Water flow rate [kg/h]
Cooling
Heating
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Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 600
DimensioningInduction systems are economical if operated locally usingthe primary air flow calculated based on DIN EN 15251while covering the cooling loads effective in the room. Anoccupancy rate typical for offices of 10 m² floor space/per-son results in a calculated specific primary air flow rate of5m³/h/m² for a low-emission building. A “non-low-emission“building requires an outside air flow rate of 7.5 m³/h/m². Thecooling loads of offices provided with good solar protectionare usually about 40 to 60 W/m².
What’s special about the HDF ceiling induction unit is the4-directional supply air diffusion. It requires aminimum dis-tance to be observed between two units or unit and wall, re-spectively, in order to avoid excessive jet deflection vertic-ally downwards.
Indoor air flow: Supply air is diffused in all four directions
Location of terminals in the ceiling gridPositioning of the units in the grid ceiling should be in awayto harmonize with the overhead lights. Avoid close vicinityof the units to protruding overhead lights.
The following examples provide suggestions for a 600mmgrid ceiling with square, mirrored grid lights installed flushto edge.
Examples apply to
- 10 m²/person
- 26 °C room temperature
- 16 °C water supply temperature
- 16 °C primary air temperature
600 x 600 grid ceiling, 4 x 3 grid lightWith 8.6 m²/unit and 7.5 m³/h/m²:· 65 m³/h/unitt · 735 W · 85 W/m²
600 x 600 grid ceiling, 4 x 3 grid lightWith 17.3 m2/unit and 5 m³/h/m²:· 87 m³/h/unit · 845 W · 49 W/m²
With 17,3 m2/unit and 7.5 m³/h/m²:· 130 m³/h/unit · 1120 W · 65 W/m²
600 x 600 grid ceiling, 3 x 3 grid lightWith 13 m²/unit and 5 m³/h/m²:· 65 m³/h/unit · 735 W · 56 W/m²
With 13 m²/unit and 7.5 m³/h/m²:· 98 m³/h/unit · 1000 W · 77 W/m²
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Active chilled beams and induction units for ceiling installationActive chilled beam type HDF
Nomenclature
HDF-2 / 300 / N / 1200 / A / S / S / 80 / 45 / RAL ----
2-pipe-unit4-pipe-unit
24
Unit width 300600
StandardLow installation height *Fresh air unitBlind diffuser
–NLB
SizeSize *Size *Size *
1200150018002100
Return air spigotwith *without
AO
Diffuserrecessedflanged
SU
Secondary air grilleexpanded metal *perforated sheet
SL
Primary pressure 80
Flow rates 45
Coating to diffusersimilar to RAL, e.g. 9010
* = only available for unit width 300 mm
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Active chilled beams and induction units for ceiling installationActive chilled beam type HDC
Views of unit
Active chilled beam type HDC 1000 (4-pipe system)
Active chilled beam type HDC 1000, view from below
ApplicationThe active chilled beam type HDC 1000 is specifically de-signed for installation in false ceilings. In the cooling moderoom air is heated at the facade, entrained into the unit,cooled and recirculated to the space.
Installation, positioningFlanged or recessed frame options.
Mode of operationPrimary air flow from internal metal nozzles, induces roomair through a heat exchanger where it is cooled or heated.The primary air is mixed with the heated or cooled secon-dary air and delivered into the room.
Hygienic operation is achieved by avoiding dehumidifica-tion of the secondary air.
SpecificationThe active chilled beam type HDC 1000 is available as:
- 4-pipe system for cooling and heating
- 2-pipe system for cooling or heating
Advantages Virtually noiseless operation Low installation height (240 mm) Pleasing, combined air inlet/outlet grille High thermal comfort in the occupied zone Condensate-free operation Fresh air supply to the room Non combustible metal housings and nozzles Maintenance-free design.Valves and heat exchanger are easily accessible by re-moving the grille.
Energy efficientby use of low primary flow rates and low static pressureat the primary air duct
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Active chilled beams and 8inductionunits for ceiling installationActive chilled beam type HDC
Cooling ModeRoom air heated at facade is drawn directly into the unitswhere it is cooled. Supply air is diffused along the ceiling,mixes with the ambient air to reduce air speed and temper-ature difference.
High thermal comfortup to 50 W/m2 or 7.5 m3/hm2 (primary air).
Indoor Air Flow
Figure 1 Figure 2 Figure 3
Typical Arrangement
min. 2.8 m
min. 3.00 m
Facade
Section through a typical office room, length = 6 m, height = 2.8 m. Schematic illustration of indoor air flow.
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Active chilled beams and induction units for ceiling installationActive chilled beam type HDC
Technical data size 1000 - 4-pipe system - cooling and heating
V[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]QP1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
40 50 22 28 13 23 230 130
100 / 6.3
18 720
100 / 2.450 77 23 29 17 28 280 170 22 880
60 110 26 32 20 34 340 200 26 1040
70 150 29 35 23 37 370 230 29 1160
80 195 33 39 27 42 420 270 32 1280
Technical data size 1000 - 2-pipe system - cooling or heating
V[m3/h]
p[Pa]
LA18[dB(A)]
LwA[dB(A)]
QP /t[W/K]
Qk/t[W/K]
Qk1
[W]QP1
[W]wok /pw[kg/h]/[kPa]
Qh /t[W/K]
Qh2
[W]woh /pw[kg/h]/[kPa]
40 50 22 28 13 24 240 130
100 / 8.5
20 800
100 / 6.250 77 23 29 17 30 300 170 25 1000
60 110 26 32 20 36 360 200 30 1200
70 150 29 35 23 40 400 230 33 1320
80 195 33 39 27 45 450 270 37 1480
Data is based on the unit with the inlet/outlet grille installed.
The suction air temperature at the unit is usually 1-2 Khigher than the room temperature.
Standard water flow rate for heating and cooling: 100 kg/h.Correction values for other flow rates see pages 26/27.
1) Water supply temperature: 16 _C WRoom temperature at a height of 1.1 m: 26 _CNon-condensing operation.
2) Water supply temperature: 60 _CAir inlet temperature: 20 _C.
Legend
V - flow rate (¦ 10%)
p - static pressure at primary air spigot
LA18 - sound pressure level (¦ 3 dB)
LwA - sound power level (¦ 3 dB) (without ceiling)
QP - primary cooling capacity (fresh air) (¦ 5%)
Qk - cooling capacity, secondary(heat exchanger) (¦ 5%)
t - temperature difference between room airand water supply
wok - standard flow rate at cooling capacity
pw - water-side pressure loss
Qh - heating capacity, secondary (¦ 5%)
woh - standard flow rate at heating capacity
DimensionsFlanged installation:Size 1000 - L x W x H = approx. 1240 x 340 x 240 mm
Recessed installation:Size 1000 - L xW x H = approx. 1198 x 298 x 240mm (suit-able for plank tiles 300 wide x 1200 or 1250 mm long
Weight: Basic unit:17 kg without waterOutlet: 6 kg
Accessories, special versionsStraight-way valves with electrothermal actuator.
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Active chilled beams and induction units for ceiling installationActive chilled beam type HDC
Dimensions size 1000 - 4-pipe system - cooling and heating, flanged installation
View “X”
air inlet air outlet
primary air
Hole 8.5 for threaded rod M6
Plug-in connection12 mm Ø x 0.75
KKW-VL = cooling - water inletKKW-RL = cooling - water returnHZG-VL = heating - water inletHZG-RL = heating - water return
“X”
340 ±1.5
286 ±1.5
160 36
HZG-VL
KKW-VL
KKW-RL
HZG-RL
73 73 48
101
3538
31
240
17Ø100
1190 ±1.5
16Unit suspension 1069 + 3
Unit length 1158
Total length of outlet 1240 ±1.5
575.5
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Active chilled beams and induction units for ceiling installationActive chilled beam type HDC
Dimensions size 1000 - 2-pipe system - cooling or heating, flanged installation
View “X”
“X”
16
340 ±1.5
286 ±1.5
160 36
KKW-VL
KKW-RL
72 121.5
167
38
240
17Ø100
Ø 8.5 forthreaded rod M6
1190 ±1.5
Unit suspension 1069 + 3
Unit length 1158
Total length of outlet 1240 ±1.5
575.5
air inlet
primary air
air outlet
KKW-VL = cooling - water inletKKW-RL = cooling - water return
Plug-in connection12 mm Ø x 0.75
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Active chilled beams and induction units for ceiling installationActive chilled beam type HDC
Water-side pressure loss and cooling capacity with different water flow ratesSize 1000, 4-pipe system - cooling and heating, standard flow rate 100 kg/h
40 90 140 1900.5
1
2
5
10
20
20 40 60 80 100 120 14040
60
80
100
120
Flow rate w [kg/h] Flow rate in % of the standard flow rate
Cooling Cooling
Water-sidepressureloss
Δpw[kPa]
Secondarycoolingcapacityin[%]ofthenominalcapacityQk
40 90 140 1900.2
0.5
1
2
5
10
50 70 90 110 130 15040
60
80
100
12015
Flow rate w [kg/h] Flow rate in % of the standard flow rate
Heating Heating
Water-sidepressureloss
Δpw[kPa]
Secondaryheatingcapacityin[%]ofthenominalcapacityQh
Note: The minimum flow rate must be at least 20% of the standard flow rate in the cooling mode and 40% in the heating mode(to ensure water-side pressure equalization).
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Active chilled beams and induction units for ceiling installationActive chilled beam type HDC
Water-side pressure loss and cooling capacity for other flow ratesSize 1000, 2-pipe system - cooling or heating, standard flow rate 100 kg/h
40 90 140 1900.5
1
2
5
10
20
20 40 60 80 100 120 14040
60
80
100
120
Flow rate w [kg/h] Flow rate in % of the standard flow rate
Cooling Cooling
Water-sidepressureloss
Δpw[kPa]
Secondarycoolingcapacityin[%]ofthenominalcapacityQk
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Active chilled beams and induction units for ceiling installationAir conditioning system LTG Indivent®
ApplicationModern air conditioning systems are required to removeheat loads and airborne substances from the occupiedspace in a safe and effective manner, without producingany draft.
The air conditioning system's construction, however, mustleave room for flexibility with view to the appearance anduse of the room. Furthermore, the system must be cost ef-fective within a wide performance range.
The LTGsystem IndiventRmeets these requirements. Itof-fers high thermal comfort by combining the advantages ofboth a mixed and a displacement air flow.
Installation, positioningUnits are usually installed over the 'core' wall, in a ceilingbulkhead or in a suspended ceiling. Indivent units requireconnection to the air conditioning system's primary air sup-ply and the chilled water system.
Installation example for IndiventR system
Advantages Comfort- High cooling capacities and uniform temperatures inthe entire occupied space.
- High thermal comfort due to low air speeds and low tur-bulence.
- High air quality - heat and airborne pollution are ex-hausted at high level.
Economy- The Indivent® system requires only one compact, roomsaving air duct system since the heat loads are beingremoved via a compact chilled water system.
Flexibility- Interior design of ceiling, lighting and window elementsis permitted.
- Workplaces in the roommay be arranged according torequirement, without any restrictions.
Mode of operationThe LDB linear diffuser with integrated cooling is installedin the ceiling over the core wall while heating is providedthrough radiators located under the window. With this con-figuration, identical flow patterns during summer andwinterare achieved. Further enhancements allow for over-win-dow locations.
Recirculated air is drawn in from the room and across acooling coil. The mixture of fresh air and recirculated air isblown into the room through a linear diffuser. In the localmixed air zone the temperature/velocity differencesbetween the ambient air and the supply air are reduced.
Close to the floor, the cooled air jet directs itself at lowspeed and with little turbulence across the occupied spacetowards the window. The air speed is virtually independentof the cooling load. The temperature difference betweenthe head and the foot level is less than 1K.
Air heated by room loads rises to high level .
Above the occupied space a cushion of warm room airwithan increased pollution concentration is formed and re-moved from the room. In this way the formation of temperat-ure layers ensures cost effective system operation .
coldwater
primaryair joint
4000 - 7500
>2500
returnair
Scheme of Indivent system flow pattern
Mixed air flow Reduction of velocity/temperature differences due tohigh induction mixing with ambient air
Displacement air flowSupply air mixed with ambient air, moves towards thefacade
Thermal effect and displaced room air transport airborne pollution and thermal loads to high level.
Return flow path to the exhaust location and formixingwith supply air
Range of ProductsThe core element of the Indivent® system is the LDB lineardiffuser with integrated cooling, the Indivent® unittype LHG,induction unit for a constant primary air flow with air-sidedamper control of the cooling capacity with bypass or wa-ter-side through valves. Available in five sizes.
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Active chilled beams and induction units for ceiling installationAir Conditioning System LTG Indivent®
Indoor air flow
Local mixed air zone
Deflection of the air flow near the floor
Air heated by occupants or equipment rises to high level
Proposed InstallationThe best installation position for the linear diffusersdepends on:
use of the room type of room ceiling design return air path inside the false ceiling.Flexibility of diffuser design and adjustment, ensures aperfect solution from both flow technology and aestheticaspects, for example:
Ideal location for the induction unit/ fan coil unit with returnair is within an open grid ceiling.
Equally successful are closed false ceilings or ceilingbulkheads that are separated through walls extending tothe room soffit. Shadow joints in the ceiling boxes or in themarginal gap serve as return air openings. The averagespeed in these openings should not exceed 0.6 to 0.9 m/s(jet contraction not considered).
For installation of LTG Linear Diffusers in the area close tothe corridor, the following is recommended:
If there are no ceiling bulkheads separating the supply airfrom the return air, a distance of about 1 m must be keptbetween the return air opening and the air outlet.
Install the linear diffuser in parallel to the corridor wall.Optimum distance: 0.6 to 1 m.
When using full height cupboards , a minimum distanceof 0.2 m between the air outlet and the cupboard frontmust be provided.
Cabinets directly underneath linear diffusers will have noimpact on the indoor air flow if a clearance of about 0.4 mto the ceiling is allowed.
Installation example for LTG Air Conditioning System IndiventR
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E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 30 of 36
Active chilled beams and induction units for ceiling installationAir conditioning system Indivent®, ceiling induction unit type LHG
View of unit
LTG type LHG units are induction units for 2-pipe systems,with an integrated linear diffuser of type LDB.
Mode of operationThe primary air from the airconditioningAHU(fresh air rate)is diffused through nozzles at high speed.
At the same time, secondary air is drawn in from the room.This secondary air is cooled within a heat exchanger.
Primary air ismixedwith this cooled secondary air, then de-livered into the room through the linear diffuser.
Depending on the unit type, control may be performed bywater-side valves, or air-side bypass damper. Heating is,in general, performed through static heating at the facade.
Advantages High cooling capacitydue to high capacity heat exchanger
Low-noise operationdue to the optimized shape of the nozzles and theirarrangement
Flexible nozzle equipmentmultiple nozzle sets that offer flexible selection, allow foroptimum indoor air flow
High operational safetylow-friction ball-bearings and torsion free casing.
Maintenance-free actuatorsMaintenance-free and safe-to-operate electrical(0 - 10 V) permanent or3 point)and pneumatic actuatorsfor any controller type.
High induction ratiothanks to an excellent aerodynamicenergy conversionofthe primary air flow.
Computer-based selection using special programsIndiventR units are sized using special LTG computerprograms.
Fire protectionis ensured through the use of primary air nozzles ofaluminum and primary air sockets of sheet steel (bothoptions on request).
DesignLDB Linear Diffuser
Cylinders: polystyrene black, matpolystyrene white, mat
Rails: aluminum natural anodisedpainted (similar to RAL) orhigh-gloss chromium-plated
Air distribution box: galvanized steel
Integrated Cooling
Housing: galvanized steel
Heat exchanger: copper pipe with pressed-onaluminum fins
Filter: class EU2
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 31 of 36
Active chilled beams and induction units for ceiling installationAir conditioning system Indivent®, ceiling induction unit type LHG
Dimensions
* The ceiling clearance may be re-duced if there are alternative lateralbackflow surfaces.
D e c k e
Required space for flapactuator depending ontype, right or left hand
Backflow grille,e.g. type LTG LCD
C/2
C/2
Condensatedrain on requestext. Ø 15
Connection forthreaded pipe fitting Cu 12 x 1(other threaded adapters onrequest)
Diffuser profile optionally(see LDB leaflet)Represented: 0 profile
Mounting suspensionwith threaded rodØ 6 mm
Mountingsuspension withthreaded rodØ 6 mm
No angle requiredif Ls < B+300
560
210
344
17182
216
103
57
180350
537
17
Ø100
37
355
23
7180*
181
50
L S
60240
57
D
17
26
50B
C
135
17
17
26 135
50
For transportation:unit and diffusersupplied separately
Minimum
heightfrom
upper
edgeofceilingpanel
Size Dimension B [mm] Dimension C [mm]Condensate collector
Dimension D [mm] Dimension LS [mm]Outlet length
Weight* [kg]
500 497 725 531 600 - 1500 19 (21.5)630 642 870 676 730 - 2000 24.5 (26)800 797 1030 831 900 - 2500 28 (30.5)1000 997 1230 1031 1100 - 2500 34 (36.5)1250 1242 1470 1276 1350 - 2500 40 (42.5)
* Values are given for units without bypass. Values for units with bypass in ( )
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 32 of 36
Active chilled beams and induction units for ceiling installationAir conditioning system Indivent®, ceiling induction unit type LHG
Technical data, 2-pipe-system(LS = outlet length)
p[Pa]
VP[m3/h]
LwA[dB(A)]
QP/tP
[W/K]
Qk/t[W/K]LS =
800 mm
Qk/t[W/K]LS =1200mm
Qk/t[W/K]LS =1500mm
200 40 28 13 21 30 *50 30 17 23 32 3560 32 20 ** 35 38
250 40 30 13 24 31 *50 32 17 26 34 3760 34 20 ** 36 40
300 40 31 13 25 32 *50 34 17 27 35 3860 36 20 ** 37 4170 37 23 ** 40 4480 39 27 ** ** 46
Size 500 wok / pw = 200 [kg/h] / 21.1 [kPa]
p[Pa]
VP[m3/h]
LwA[dB(A)]
QP/tP
[W/K]
Qk/t[W/K]LS =1000mm
Qk/t[W/K]LS =1500mm
Qk/t[W/K]LS =2000mm
200 40 26 13 26 * *50 28 17 28 37 *60 30 20 30 39 45
250 40 28 13 27 35 *50 30 17 30 38 *60 32 20 32 41 47
300 40 30 13 28 36 *50 32 17 31 40 *60 34 20 33 43 4970 36 23 ** 45 5290 38 27 ** ** 57
Size 630 wok / pw = 250 [kg/h] / 21.1 [kPa]
p[Pa]
VP[m3/h]
LwA[dB(A)]
QP/tP
[W/K]
Qk/t[W/K]LS =1000mm
Qk/t[W/K]LS =1500mm
Qk/t[W/K]LS =2000mm
200 50 27 17 28 37 *65 30 22 31 41 4880 32 27 ** 44 52
250 50 29 17 29 39 *65 32 22 32 43 5080 34 27 ** 46 55
300 50 31 17 30 40 *65 33 22 33 44 5280 36 27 ** 48 57100 38 33 ** ** 62120 40 40 ** ** 66
Size 800 wok / pw = 300 [kg/h] / 21.1 [kPa]
p[Pa]
VP[m3/h]
LwA[dB(A)]
QP/tP
[W/K]
Qk/t[W/K]LS =1250mm
Qk/t[W/K]LS =1750mm
Qk/t[W/K]LS =2500mm
200 60 28 20 35 44 *80 31 27 39 49 60100 33 33 ** 54 66
250 60 30 20 36 46 *80 33 27 40 51 63100 35 33 ** 56 69
300 60 31 20 37 48 *80 34 27 42 53 65100 37 33 ** 58 71120 39 40 ** ** 76140 40 47 ** ** 81
Size 1000 wok / pw = 350 [kg/h] / 21.1 [kPa]
p[Pa]
VP[m3/h]
LwA[dB(A)]
QP/tP
[W/K]
Qk/t[W/K]LS =1500mm
Qk/t[W/K]LS =2000mm
Qk/t[W/K]LS =2500mm
200 65 27 22 38 48 *80 29 27 42 52 60110 32 33 ** 59 68
250 65 29 22 40 50 *80 31 27 44 54 63110 34 33 ** 61 71
300 65 32 22 42 52 *80 33 27 45 56 65100 35 33 ** 61 71125 37 42 ** ** 78145 39 48 ** ** 82
Size 1250 wok / pw = 420 [kg/h] / 21.1 [kPa]
Legend:
p static pressure at the primary air spigot
VP primary air flow rate (10%)LwA acoustic power level (3 dB)QP primary cooling capacity (fresh air) (5%)tP temperature difference between room air
and primary air
t temperature difference betweensuction air temperature before enteringthe heat exchanger and water supply
Qk secondary cooling capacity(heat exchanger) (5%)
wok standard water flow rate at cooling capacity
pw water-side pressure loss
* primary air flow rate too low for slot length
** primary air flow rate too high for slot length
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 33 of 36
Active chilled beams and induction units for ceiling installationAir conditioning system Indivent®, ceiling induction unit type LHG
Water-side pressure loss, 2-pipe system
30 50 100 200 300 500
1
2
5
10
20
30
0.6
water inlet temperaturetw1 = 10 ... 15 °C
size 500size 630size 800size 1000size 1250
Water-sidepressureloss
Δpw[kPa]
Flow rate w [kg/h]
Loss of secondary cooling capacity when changing the water flow rate, 2-pipe system
40 60 80 100 12040
60
80
100
120
20
Note :The minimum water flow rate win the heat exchangermust be at least 20%of the standard water flow rate (wok)taking into consideration the water-sidepressure equalization.
Nominal water flow ratesSize 500: 200 kg/hSize 630: 250 kg/hSize 800: 300 kg/hSize 1000: 350 kg/hSize 1250: 420 kg/h
Secondarycoolingcapacityin[%]ofthenom.capacityQk
Water flow rate in % of the standard water flow rate
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 34 of 36
Active chilled beams and induction units for ceiling installationAir conditioning system Indivent®, ceiling induction unit type LHG
Selection examplesGiven values:
Required cooling capacity: Qk soll = 550 W
Water inlet temperature: tVL = 16 C
Room temperature/suction air temperature beforeentering the heat exchanger: tR/tA = 26 C
Primary air flow rate: VP = 65 m3/h
Static pressure at primary air socket: p = 250 Pa
Primary air temperature: tP = 18 C
Installation dimensions / slot length : LS = 1500 mm
LHG, size 800selected (according to selection chart)
Resulting according to selection chart:
Primary cooling capacity: QP 22 W/K x 8 K = 176 W(with tP = tR - tPri = 8 K)
Secondary cooling capacity Qk 43 W/K x 10 K = 430 W(at standard flow rate) (with t = tA - tVL = 10 K)
Total cooling capacity: Qkges 176 W + 430 W = 606 W
Sound power level: LwA 32 dB(A)
The total cooling capacity is larger than the required cooling capacity.Since the primary cooling capacity depends on the primary air flow rate,and the latter is fixed due to the required air change rate,the secondary cooling capacity may be reduced by changing the water volume.
Required secondary cooling capacity:Qk soll - QP = Qkerf 550 W - 176 W = 374 W
Share of the secondary coolingcapacity in percent when usingthe standard water flow rate 374 W / 430 W = 0,87 87 %
According to the diagrams (previous page) the following values are obtained:
Water flow rate at87% secondary cooling capacity:about 62 % of the standard flow rate(reading) 300 kg/h x 0,62 = 186 kg/h
Pressure loss at 186 kg/h: ca. 9 kPa (reading)
The secondary cooling capacity may be adjusted through selection of the unit size,the slot length and by changing the water flow rate.
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 35 of 36
Active chilled beams and induction units for ceiling installationCeiling induction unit type HFM 2500
Views of unit
Ceiling induction unit type HFM 2500 in manufacture
HFM units mounted in test device
ApplicationThe LTG ceiling induction unit type HFM was specificallydesigned for air conditioning large factory buildings that re-quire ventilation, heating and cooling. If thermal loads arehigh, the advantages of an air-waterA/C systemcomparedto an air-only system may be used as follows:
air replacement and discharge of particle and humidityloads through a centrally processed primary air flow interms of a pure outside air flow
highly flexible, decentralized heating and coolingoperation
as a 2-pipe system for heating with centrally heatedprimary air (heat up) and cooling in the recirculating airmode trough water-cooled heat exchanger
- as a 4-pipe systemwith separate circuits for cold and hotwater for heating and cooling in the recirculating airmode
This allows to limit the outside air flow to the minimum airexchange required to maintain hygienic conditions, and tominimize the construction volume for A/C central units andduct systems.
Installation, positioningThrough adaptation of the air outlet different installa-tion types (horizontal to vertical) and installationheights (5 - 15 m) may be realized depending on theactual conditions on site.
Mode of OperationThe primary air delivered by the A/C central unit is blownout virtually noiseless through nozzles. Through the thusgenerated induction, room air is fed through a heat ex-changer in terms of a secondary air flow that is heated orcooled. The primary air is mixed inside the unit with theheated or cooled secondary air, then distributed in theroom through air diffusers.
The diffuser is continuously adjusted according to the tem-perature difference between the supply air and the room inorder to ensure good thermal comfort with an adequate jetpenetration depth.
The primary air flow is best adapted to the actual use byswitching on/off units or unit groups.
Thanks to the fact that the airborne dust is decreasing de-pending on the suspension height, the heat exchangerstays clean for a long time, especially if condensation isavoided through primary air dehumidification.
Advantages High cooling and heating capacity (200 W/m2)due to high induction ratio and heavy-duty large-surfaceheat exchanger
Low-noisethanks to a special nozzle geometry and primarypressure level 150 - 200 Pa; a sound pressure levelbelow 35 dB(A) may be achieved
Fire safetyEntirely made of sheet steel with non-combustiblenozzles
Air outlet on secondary air sideThanks to high induction ratio low temperature differ-ences between supply air and room; direction of diffusedair continuously adjustable between heating and coolingmode; in the cooling mode splitting of the supply air jetsinto highly inductive individual jets; high flexibility with re-gard to adaptation of the diffuser to installation positionand height
Adjustable primary air flowthrough open/shut operation of the absolutely tightlyclosing primary air shut-off flap on the unit's entrancesocket.
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 36 of 36
Active chilled beams and induction units for ceiling installationCeiling induction unit type HFM 2500
Technical Data
Δp[Pa]
VP[m3/h]
LwA[dB(A)]
LpA***[dB(A)]
QP/ΔtP[W/K]
Qk/Δtw[W/K]
QP*[W]
Qk**[W]
wok/Δpw[kg/h/kPa]
200 700 45 35 233 425 1400 5100 1500 / 24
200 1000 47 37 333 500 2000 6000 1500 / 24
200 1400 52 42 467 545 2800 6540 1500 / 24
Weight: 300 kg including water content* Primary cooling capacity at room temperature 26 _C and primary air temperature 20 _C** Secondary cooling capacity at room temperature 26 _C and water inlet temperature 14 _C*** Room damping 10 dB for 500 m3 cubic content/unit and average reverberation period of 2 secs.
Legend
p - static pressure on the primary air socket
VP - primary air flow rate (10%)LwA - A-weighted sound power level (3dB)LpA - A-weighted sound pressure level
with a 10 dB room damping
QP - primary cooling capacity
Qk - secondary cooling capacity(heat exchanger) (5%)
wok - standard water flow rate
t - temperature difference between suction airtemp. before entering the heat exchangerand water supply
tP - temperature differencebetween room air and water inlet
Control Examples- Air-side switching of the primary air flow through shut-offflaps on the induction units (requires pressure regulationinside the supply air line and a frequencyconverter on thefan)
- Group of units with joint flow control valve (reduction ofmaintenance spots)
- Adjustment to load throughwatermass flow and/or on/offswitching of units
- Adjustment of air outlet through continuous signal de-pending on the load type (partial load, heating load)
Dimensions
150
315
2730
2540
1317
142
457
118.5
198
696.5164
148
1977
345
Heat exchanger connections DN 25
Specification and Schedule of Prices Active Chilled Beam Type HDF-4 Edition 10.7.2008 / page 1
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Active chilled beam for 4-Pipe-Systems
for low intermediate ceilings Type: HDF-4 (heating and cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction prin-ciple, consisting of the following components: - Primary air box aus verzinktem Stahlblech, of galvanized sheet steel, lateral
NW 100 mm primary air socket, measuring device for flow rate determina-tion, unit suspension via bores.
- Solid, torsion resistant nozzle box of galvanized, black coated sheet steel in-
cluding acoustically optimized non-combustible high-induction metal nozzles. - Heat exchanger with separate water circuits, 4-pipe system, designed for
cooling and heating, consisting of copper tubes with press-fitted aluminum fins; operating pressure up to 12 bar, water-side connection (12 mm diam.) via quick release coupling; visible surfaces black coated.
- Air diffuser frame of extruded aluminum profiles for horizontal supply air
diffusion; transition to suspended ceiling either overlap or non-overlap; easily removable secondary air grille, expanded metal version, secured by safety suspension; visible surfaces powder coated similar to RAL.
- Flexible nozzle design based on the primary air flow rate and preselected
primary pressure (end pressure).
Outside dimensions [WxH]: 319 x 229 mm (flanged installation) 295 x 229 mm (recessed installation)
Sizes:
o 1200 o 1500 o 1800 o 2100 o 2400 Manufacturer: LTG Aktiengesellschaft Series: Active Chilled beam Type: HDF-4
-2-
Specification and Schedule of Prices Active Chilled Beam Type HDF-4 Edition 10.7.2008 / page 2
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Variants: o Unit HDF-N
Low height installation (construction height 160 mm), remaining details as standard version
o Unit HDF-L Fresh air connection, details as standard version, yet without heat exchanger, for fresh air supply only
o Unit HDF-B Blind diffuser, looks like the standard version. Without any A/C functions, serves to bridge the gap between A/C units in case of an installation as a continued band
Accessories/special version (optional, at extra charge): o Face end caps including pins for flush alignment of unit. o Return air connection DN 100 at the top o Flexible hose, oxygen diffusion tight version
(Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water up to supply temperatures of 50 °C, operating pressure 10 bar
o Flexible hose, oxygen diffusion tight version (Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
or standard hose: o Flexible hose, (EPDM-core), with stainless steel braiding,
quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water
o Flexible hose, (EPDM-core), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
o Dummy grille for inactive sections or on request with return air connection o 2 x Straight‐way valve with electro‐thermal actuator o 2 x 3‐way valve with electro‐thermal actuator o 2 x Straight‐way valve with 3‐point actuator o 2 x 3‐way valve with 3‐point actuator o Throttling damper KLXG 100/1
-3-
Specification and Schedule of Prices Active Chilled Beam Type HDF-4 Edition 10.7.2008 / page 3
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Technical Specification
Primary air pressure [Pa]
Primary air flow rate [m3/h]
Sound power LWA [dB(A)]
Sound pressure level at 18 m2 Sabine LpA [dB(A)]
Cooling mode
Induction air temperature [°C]
Primary air temperature [°C]
Water supply temperature [°C]
Cooling capacity [W]
Heating mode
Induction air temperature [°C]
Water supply temperature [°C]
Heating capacity [W]
Natural convection [W]
Specification and Schedule of Prices Active Chilled Beam Type HDF-2 Edition 10.7.2008 / page 1
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Active chilled beam for 2-Pipe-Systems
for low intermediate ceilings Type: HDF-2 (heating or cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction prin-ciple, consisting of the following components: - Primary air box aus verzinktem Stahlblech, of galvanized sheet steel, lateral
NW 100 mm primary air socket, measuring device for flow rate determina-tion, unit suspension via bores.
- Solid, torsion resistant nozzle box of galvanized, black coated sheet steel in-
cluding acoustically optimized non-combustible high-induction metal nozzles. - Heat exchanger with one water circuit, 2-pipe system, designed for cooling
or heating, consisting of copper tubes with press-fitted aluminum fins; operat-ing pressure up to 12 bar, water-side connection (12 mm diam.) via quick re-lease coupling; visible surfaces black coated.
- Air diffuser frame of extruded aluminum profiles for horizontal supply air
diffusion; transition to suspended ceiling either overlap or non-overlap; easily removable secondary air grille, expanded metal version, secured by safety suspension; visible surfaces powder coated similar to RAL.
- Flexible nozzle design based on the primary air flow rate and preselected
primary pressure (end pressure).
Outside dimensions [WxH]: 319 x 229 mm (flanged installation) 295 x 229 mm (recessed installation)
Sizes:
o 1200 o 1500 o 1800 o 2100 o 2400 Manufacturer: LTG Aktiengesellschaft Series: Active Chilled beam Type: HDF-2
-2-
Specification and Schedule of Prices Active Chilled Beam Type HDF-2 Edition 10.7.2008 / page 2
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Variants: o Unit HDF-N
Low height installation (construction height 160 mm), remaining details as standard version
o Unit HDF-L Fresh air connection, details as standard version, yet without heat exchanger, for fresh air supply only
o Unit HDF-B Blind diffuser, looks like the standard version. Without any A/C functions, serves to bridge the gap between A/C units in case of an installation as a continued band
Accessories/special version (optional, at extra charge): o Face end caps including pins for flush alignment of unit. o Return air connection DN 100 at the top o Flexible hose, oxygen diffusion tight version
(Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water up to supply temperatures of 50 °C, operating pressure 10 bar
o Flexible hose, oxygen diffusion tight version (Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
or standard hose: o Flexible hose, (EPDM-core), with stainless steel braiding,
quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water
o Flexible hose, (EPDM-core), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
o Dummy grille for inactive sections or on request with return air connection o Straight‐way valve with electro‐thermal actuator o 3‐way valve with electro‐thermal actuator o Straight‐way valve with 3‐point actuator o 3‐way valve with 3‐point actuator o Throttling damper KLXG 100/1
-3-
Specification and Schedule of Prices Active Chilled Beam Type HDF-2 Edition 10.7.2008 / page 3
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Technical Specification
Primary air pressure [Pa]
Primary air flow rate [m3/h]
Sound power LWA [dB(A)]
Sound pressure level at 18 m2 Sabine LpA [dB(A)]
Cooling mode
Induction air temperature [°C]
Primary air temperature [°C]
Water supply temperature [°C]
Cooling capacity [W]
Heating mode
Induction air temperature [°C]
Water supply temperature [°C]
Heating capacity [W]
Natural convection [W]
Specification and Schedule of Prices Active Chilled Beam Type HDF-2/600 Edition 10.11.2010 / page 1 of 3
© LTG Aktiengesellschaft · Grenzstraße 7 · D-70435 Stuttgart · Tel.: +49 / 711 / 8201-0 · Fax.: +49 / 711 / 8201-720 Internet: www.LTG-AG.de · E-Mail: [email protected] Former editions are invalid · Subject to technical modifications
Qty. Description Unit price in €
Total pricein €
Active chilled beam for 2-pipe-systems for low intermediate ceilings Type: HDF-2/600 (heating or cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction principle, blowing out air in four directions, consisting of the following compo-nents: - Primary air box of galvanized sheet steel, lateral NW 125 mm primary air
socket, measuring device for flow rate determination, unit suspension via bores.
- Solid, torsion resistant nozzle box of galvanized, black coated sheet steel
including acoustically optimized non-combustible high-induction metal nozzles.
- Heat exchanger with one water circuit, 2-pipe system, designed for cooling
or heating, consisting of copper tubes with press-fitted aluminum fins; operating pressure up to 12 bar, water-side connection (Ø 12 mm) via quick release coupling; visible surfaces black coated.
- Air diffuser frame of extruded aluminum profiles for horizontal supply air
diffusion; transition to suspended ceiling either overlap or non-overlap; easily removable secondary air grille, expanded metal version, secured by safety suspension; visible surfaces powder coated similar to RAL.
- Flexible nozzle design based on the primary air flow rate and preselected
primary pressure (end pressure). Outside dimensions [length x width x height]: 600 mm grid 598 x 1198 x 199 mm (edge-to-edge installation, grid ceiling) 593 x 1193 x 199 mm (T-bar ceiling, laid on top) 598 x 1198 x 199 mm (T-bar, concealed installation) 625 mm grid 623 x 1248 x 199 mm (edge-to-edge installation, grid ceiling) 618 x 1243 x 199 mm (T-bar ceiling, laid on top) 623 x 1248 x 199 mm (T-bar, concealed installation) Ceiling cut-out 570 x 1170 mm (plasterboard ceiling) 598 x 1198 x 199 mm Manufacturer: LTG Aktiengesellschaft Series: Active Chilled beam Type: HDF-2/600
Specification and Schedule of Prices Active Chilled Beam Type HDF-2/600 Edition 10.11.2010 / page 2 of 3
© LTG Aktiengesellschaft · Grenzstraße 7 · D-70435 Stuttgart · Tel.: +49 / 711 / 8201-0 · Fax.: +49 / 711 / 8201-720 Internet: www.LTG-AG.de · E-Mail: [email protected] Former editions are invalid · Subject to technical modifications
Qty. Description Unit Price in €
Total pricein €
Variants: o Unit HDF-L
Fresh air connection, details as standard version, yet without heat exchanger, for fresh air supply only
o Unit HDF-B Blind diffuser, looks like the standard version. Without any A/C functions, serves to bridge the gap between A/C units in case of an installation as a continued band
Accessories/special version (optional, at extra charge): o Flexible hose, oxygen diffusion tight version
(Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water up to supply temperatures of +50 °C, operating pressure 10 bar
o Flexible hose, oxygen diffusion tight version (Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water or standard hose:
o Flexible hose, (EPDM-core), with stainless steel braiding,
quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water
o Flexible hose, (EPDM-core), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
o Dummy grille for inactive sections or on request with return air connection o Straight‐way valve with electro‐thermal actuator o 3‐way valve with electro‐thermal actuator o Straight‐way valve with 3‐point actuator o 3‐way valve with 3‐point actuator o Throttling damper KLXG 125
Specification and Schedule of Prices Active Chilled Beam Type HDF-2/600 Edition 10.11.2010 / page 3 of 3
© LTG Aktiengesellschaft · Grenzstraße 7 · D-70435 Stuttgart · Tel.: +49 / 711 / 8201-0 · Fax.: +49 / 711 / 8201-720 Internet: www.LTG-AG.de · E-Mail: [email protected] Former editions are invalid · Subject to technical modifications
Qty. Description Unit Price in €
Total pricein €
Technical Specification
Primary air pressure [Pa]
Primary air flow rate [m3/h]
Sound power LWA [dB(A)]
Sound pressure level at 18 m2 Sabine LpA [dB(A)] Cooling mode
Induction air temperature [°C]
Primary air temperature [°C]
Water supply temperature [°C]
Cooling capacity [W] Heating mode
Induction air temperature [°C]
Water supply temperature [°C]
Heating capacity [W]
Natural convection [W]
Specification and Schedule of Prices Active Chilled Beam Type HDC 1000-4 Edition 10.7.2008 / page 1
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Active chilled beam for 4-Pipe-Systems
for low intermediate ceilings Type: HDC 1000-4 (heating and cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction prin-ciple, consisting of the following components: - Primary air box aus verzinktem Stahlblech, of galvanized sheet steel, lateral
NW 100 mm primary air socket, unit suspension via bores. - Solid, torsion resistant nozzle box of galvanized, black coated sheet steel in-
cluding acoustically optimized non-combustible high-induction metal nozzles. - Heat exchanger with separate water circuits, 4-pipe system, designed for
cooling and heating, consisting of copper tubes with press-fitted aluminum fins; operating pressure up to 12 bar, water-side connection (12 mm diam.) via quick release coupling; visible surfaces black coated.
- Combined air inlet/outlet grille, similar to RAL, for band grid ceilings, re-
movable for easy nozzle and heat exchanger cleaning. Valves and electro-thermal drives may be revised after removal of the air outlet grille.
- Flexible nozzle design based on the primary air flow rate and preselected
primary pressure (end pressure). Outside dimensions 1240 x 340 x 240 mm (flanged installation) 1198 x 298 x 240 mm (recessed installation) Manufacturer: LTG Aktiengesellschaft Series: Aktiver Kühlbalken Type: HDC 1000-4
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Specification and Schedule of Prices Active Chilled Beam Type HDC 1000-4 Edition 10.7.2008 / page 2
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Accessories/special version (optional, at extra charge): o Flexible hose, oxygen diffusion tight version
(Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water up to supply temperatures of 50 °C, operating pressure 10 bar
o Flexible hose, oxygen diffusion tight version (Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
or standard hose: o Flexible hose, (EPDM-core), with stainless steel braiding,
quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water
o Flexible hose, (EPDM-core), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
o Dummy grille for inactive sections o 2 x Straight‐way valve with electro‐thermal actuator o 2 x 3‐way valve with electro‐thermal actuator o 2 x Straight‐way valve with 3‐point actuator o 2 x 3‐way valve with 3‐point actuator o Throttling damper KLXG 100/1
-3-
Specification and Schedule of Prices Active Chilled Beam Type HDC 1000-4 Edition 10.7.2008 / page 3
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Technical Specification
Primary air pressure [Pa]
Primary air flow rate [m3/h]
Sound power LWA [dB(A)]
Sound pressure level at 18 m2 Sabine LpA [dB(A)]
Cooling mode
Induction air temperature [°C]
Primary air temperature [°C]
Water supply temperature [°C]
Cooling capacity [W]
Heating mode
Induction air temperature [°C]
Water supply temperature [°C]
Heating capacity [W]
Natural convection [W]
Specification and Schedule of Prices Active Chilled Beam Type HDC 1000-2 Edition 10.7.2008 / page 1
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Active chilled beam for 2-Pipe-Systems
for low intermediate ceilings Type: HDC 1000-2 (heating or cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction prin-ciple, consisting of the following components: - Primary air box aus verzinktem Stahlblech, of galvanized sheet steel, lateral
NW 100 mm primary air socket, unit suspension via bores. - Solid, torsion resistant nozzle box of galvanized, black coated sheet steel in-
cluding acoustically optimized non-combustible high-induction metal nozzles. - Heat exchanger with one water circuit, 2-pipe system, designed for cooling
or heating, consisting of copper tubes with press-fitted aluminum fins; operat-ing pressure up to 12 bar, water-side connection (12 mm diam.) via quick re-lease coupling; visible surfaces black coated.
- Combined air inlet/outlet grille, similar to RAL, for band grid ceilings, re-
movable for easy nozzle and heat exchanger cleaning. Valves and electro-thermal drives may be revised after removal of the air outlet grille.
- Flexible nozzle design based on the primary air flow rate and preselected
primary pressure (end pressure). Outside dimensions 1240 x 340 x 240 mm (flanged installation) 1198 x 298 x 240 mm (recessed installation) Manufacturer: LTG Aktiengesellschaft Series: Aktiver Kühlbalken Type: HDC 1000-2
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Specification and Schedule of Prices Active Chilled Beam Type HDC 1000-2 Edition 10.7.2008 / page 2
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Accessories/special version (optional, at extra charge): o Flexible hose, oxygen diffusion tight version
(Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water up to supply temperatures of 50 °C, operating pressure 10 bar
o Flexible hose, oxygen diffusion tight version (Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
or standard hose: o Flexible hose, (EPDM-core), with stainless steel braiding,
quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water
o Flexible hose, (EPDM-core), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
o Dummy grille for inactive sections o Straight‐way valve with electro‐thermal actuator o 3‐way valve with electro‐thermal actuator o Straight‐way valve with 3‐point actuator o 3‐way valve with 3‐point actuator o Throttling damper KLXG 100/1
-3-
Specification and Schedule of Prices Active Chilled Beam Type HDC 1000-2 Edition 10.7.2008 / page 3
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Technical Specification
Primary air pressure [Pa]
Primary air flow rate [m3/h]
Sound power LWA [dB(A)]
Sound pressure level at 18 m2 Sabine LpA [dB(A)]
Cooling mode
Induction air temperature [°C]
Primary air temperature [°C]
Water supply temperature [°C]
Cooling capacity [W]
Heating mode
Induction air temperature [°C]
Water supply temperature [°C]
Heating capacity [W]
Natural convection [W]
Specification and Schedule of Prices A/C System Indivent® Type LHG Edition 2.2.2009 / page 1
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Compact ceiling air diffuser system with integrated cooling for a steady primary air flow rate to produce a combined mixed air/displacement air flow at low room air speed e and modest vertical temperature gradients in the space. Consisting of: induction unit with 2‐pipe heat exchanger for high capacity, made from copper pipe with pressed‐on aluminum fins for a maximum operating pressure of 10 bar in the standard version, to be connected to the chilled water system and primary air of an A/C unit, heat exchanger connections ½“ internal thread, connections for water either on the right or left, large‐surface condensate receiver of galva-nized sheet steel, 40 mm high. Air diffuser with linear adjustment composed of cylindrical slot nozzles in na-turally anodized aluminum profiles, direction of air flow easily re‐adjustable by 180° even subsequently without the need of any additional mechanism, indivi-dually factory‐set, alternating nozzles providing flow patterns from flat ceiling jet to wide spreading in 17 individual jets per meter diffuser length, with air dis-tribution box of galvanized sheet steel. Sizes: o 500 o 630 o 800 o 1000 o 1250 Manufacturer: LTG Aktiengesellschaft Series: LTG Klimasystem Indivent® Type: LHG
-2-
Specification and Schedule of Prices A/C System Indivent® Type LHG Edition 2.2.2009 / page 2
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Accessories/special version (optional, at extra charge):
o Unit with secondary air filter o Condensate receiver with drainage socket o Primary air throttling damper KLX 100/1 o Primary air throttling damper KLI 100 o Flexible hose, oxygen diffusion tight version
(Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
or standard hose: o Flexible hose, (EPDM-core), with stainless steel braiding,
quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water
o Aluminum return air grille, free section 85%, rounded edges, deflection through fins, natural color anodized Length _______ mm Width ________ mm
Installation type: o vertical/horizontal type LDC o Frame for return air grille: o Special version grille / frame powder coated similar to RAL-No. ______ o Air connection socket from behind o Primary air socket of sheet metal for increased fire safety o Primary air nozzles of aluminum for increased fire safety o Aluminum profile finish: o painted similar to RAL-No.: _____ o anodized _____ o chromium-plated o Profile adaptation to the ceiling using: o special profile No.: _____ o additional profile No.: _____ o End piece for profile face side: o 15 mm wide o 25 mm wide o Variable diffuser neck length (max. 170 mm) Required length _________ mm
-3-
Specification and Schedule of Prices A/C System Indivent® Type LHG Edition 2.2.2009 / page 3
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Qty. Description Unit Price
in € Total price
in €
Variants: Air‐side control: Indivent LHG with bypass dampers, galvanized steel, with elastic sealing faces, on maintenance-free, low‐friction ball-bearings. o LHG-P: Damper control through pneumatic LTG actuator.
Operating range: 0.2 ... 1.0 bar. o LHG-B: Damper control through electric continous actuator,
type Belimo LM 24 SR. Control range: DC 2 ..10 V Operating voltage: 24 V o LHG-L: Damper control through electric actuator, type Siemens Landis + Stäfa GDB 131.1E. Control type: 3‐point. Operating voltag : 24 V. Water‐side control: without bypass dampers using a customer‐provided precision control valve. o LHG-O: without bypass dampers.
Specification and Schedule of Prices A/C System Indivent® Type LHG Edition 2.2.2009 / page 4
© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.
Technical Specification
Primary air flow rate [m³/h]
Static pressure at the primary socket [Pa]
Sound power oft he unit (LWA) [dB(A)]
Cooling mode:
Room temperature [°C]
Primary air temperature [°C]
Total cooling capacity/unit [W]
Cooling capacity primary air [W]
Cooling capacity of the heat exchanger [W]
Suction air temperature [°C]
Cold water flow rate [kg/h]
Water-side pressure loss [kPa]
Unit specifications:
Fabr. / type / size
Length / height / depth of the unit [mm]
The Innovation Company
LTG Aktiengesellschaft
E LTG Aktiengesellschaft ⋅ Grenzstraße 7 ⋅ D-70435 Stuttgart ⋅ +49 (711) 8201-0 ⋅ Fax -720Internet: www.LTG-AG.de ⋅ E-Mail: [email protected] ⋅Printed in Germany ⋅ Former editions are invalid ⋅ Subject to technical modifications.
Locations and Representatives
GermanyCentral Office (Frankfurt)Sales area: PLZ 54, 55, 60, 63, 64, 66 - 69, 97Sontraer Str. 27 · D-60386 Frankfurt am MainHerr Bergmann +49 (69) 94 20 19-12, Fax -10E-mail: [email protected]
Central Office (Herborn)Sales area:: PLZ 30, 31, 34-38, 56, 57, 61, 65Sperberweg 16 · D-35745 HerbornHerr Hartmann +49 (2772) 570-725, Fax -727E-mail: [email protected]
Eastern Office (Berlin)Sales area:: PLZ 10 - 25, 29, 39Eisenhutweg 51a · D-12487 BerlinHerr Linke +49 (30) 63 22 87-74, Fax -75E-mail: [email protected]
Eastern Office (Chemnitz)Sales area:: PLZ 01 - 09, 98, 99Johannes-Ebert-Straße · 20 D-09128 ChemnitzHerr Schenfeld +49 (371) 77118-01, Fax -02E-mail: [email protected]
Southern OfficeSales area:: PLZ 70 - 96Grenzstraße 7 · D-70435 StuttgartHerr Gau +49 (711) 8201-209, Fax -210E-mail: [email protected]
Sales area: PLZ 80 - 87, 90 - 96Grenzstraße 7 · D-70435 StuttgartHerr Flaadt +49 (711) 8201-752, Fax -210E-Mail: [email protected]
Western OfficeVerkaufsgebiet: PLZ 26 - 28, 32, 33, 40 - 53, 58 - 59Baststraße 30 · D-46119 Oberhausen/Rheinl.Herr Perenz +49 (208) 30431-55, Fax -56E-mail: [email protected]
AustriaKTG Klimatechnische Gesellschaft mbHSchubertstraße 13 · A-2126 Ladendorf +43 (2575) 21089, Fax (02575) 21022E-Mail: [email protected]
Great BritainMAP Motorised Air Products Ltd.Unit 5A · Sopwith CrescentWickford Business Park · Wickford GB-Essex SS11 8YU +44 (1268) 57 44 42, Fax +44 (1268) 57 44 43E-Mail: [email protected]
NetherlandsOpticlima Systems b.v.Leeuwerikstraat 110 · NL-3853 AG Ermelo +31 (341) 493969, Fax +31 (341) 493931E-Mail: [email protected]
PolandHTK Went Sp.z.o.o.ul. Chopina 13/3 · PL-30047 Krakow +48 (12) 632 31 32, Fax +48 (12) 632 81 93E-Mail: [email protected]
PortugalArGelo S. A.R. Luis Pastor de Macedo · Lote 28 B, P-1750-158 Lisboa +351 (21) 752 01 20, Fax +351 (21) 752 01 29E-Mail: [email protected]
SwitzerlandLaminair AGKirchbergstrasse 105 · CH-3400 Burgdorf +41 (34) 420 02-10, Fax +41 (34) 420 02-11E-Mail: [email protected]
TurkeyStep Müh. Yapi Ltd.Barbaros Mah. · Kayacan Sokak No. 10TR-34746 Yenisahra-Atasehir-Istanbul +90 (216) 470 0070, Fax +90 (216) 470 0525E-Mail: [email protected]
The Program for Room Air TechnologyKey componentsAir diffusers for ceilings, walls and floors: LTG System clean®,linear diffusers, displacement air diffusers, swirl diffusersCoandaventR · LTG chilled beam cool wave® · Induction unitsKlimaventR · Induction unit CoandatrolR · Fancoil units Raum-luft · Ceiling fan coil units VentotelR · Decentralized facadeventilation units UniventR · Airflow control units · labair®
system: components for lab ventilation
LTG Engineering ServicesTechnical services for investors, architects, engineers andplant builders during design, construction and operation ofbuildings. Reliable and precise data relating to the ventila-tion of air conditioning system are given already beforerealization of the project, determined by measurements,calculations, building simulations and experiments.
The Program for Process Air TechnologyKey componentsAxial, radial and tangential fans · Fahrtwind Simulators ·LTG Filtration Technology: fans, suction nozzles,dampers,· filters, separators, compactors · LTG Humidifi-cation Technology: air humidifiers, product humidifiers
LTG Engineering ServicesTechnical services during development and operation ofassembly groups,machines and plants · Analysis, simula-tion, optimization · Customized solutions · Mobile filtrationlab / filter engineering on site