KR SeriesCOMPACT UNIT COOLERS
Technical Bulletin: KRUC_005_092017
Products that provide lasting solutions.
KR Series Compact Unit Coolers
Provides Excellent Design Innovations That Enhance Overall Refrigeration Performance
KR SERIES COMPACT UNIT COOLERS
Specifications subject to change without notice.1
The KR Compact Unit Cooler is specially designed with a low sihouette that fits flush to the ceiling utilizing less than 16 inches of headroom. This design gives you more usable storage space for every walk-in application. The KR Series is constructed for high efficiency and ease of maintenance.
Standard Features
n Swept Wing Fan Blade Design – providing minimal noise and improved customer satisfaction.
n Non-metallic fan guard.
n Front access to refrigeration components for serviceability.
n Electrical panel located behind front access hinged aluminum cover.
n Standard EC fan motors for 115/1/60 and 208-230/1/60.
n Die-formed patterned aluminum cabinet and drain pan with easy-to-clean radius corners.
n Pressurized, sealed coils with heavy-walled copper tube and rippled full collar aluminum fins.
n Superheat gauge fitting.
n Electric defrost models feature efficient coil face heaters, drain pan heaters and defrost controls. Available heater voltages – 115/1 (H&P Defrost only), 230/1, 230/3, and 460/1 (E Defrost only).
n Factory wired fan and defrost controls with convenient terminal strips.
n Plug in motor leads.
Optional Features and Accessories
n These coils can be circuited for fluid or CO2 application.
n PSC motors for 115/1/60 and 208-230/1/60.
n Shaded pole motors for 460/1/60.
n Installed TX valve.
n Installed liquid solenoid valve.
n Wire fan guard.
KR Series Compact Unit Coolers
Ordering Information
KR SERIES COMPACT UNIT COOLERS
Specifications subject to change without notice.2
n Complete model number.
n Refrigerant R404A, R407A, R407C, R407F, R507 and R448A/R449A.
n Room temperature.
n Saturated suction temperature.
n Liquid refrigerant temperature.
n Motor and heater voltage.
n Optional features.
n Optional accessories.
Model Key
Heater Voltage
A = 230/1/60B = 115/1/60 (For H&P Defrost)
H = 460/1/60 (For E Defrost)K = 230/3/60
Unit Type
KR = Krack Compact Series
Fin Spacing
4 FPI6 FPI
Number of Fans
Type of Defrost
A = Air Defrost
E = Electric with Electric PanG = 3 Pipe Hot Gas with Hot Gas Drain PanH = 3 Pipe Hot Gas with Electric Drain Pan
K = 2 Pipe Kool Gas with Kool Gas Drain PanP = 2 Pipe Kool Gas with Electric Drain Pan
Motor Type
A = Shaded Pole Motors (460V only) B = PSC Motors (115V & 230V) E = EC Motors (115V & 230V)
BTU/h in Hundreds (00)
Motor Voltage
A = 208-230/1/60B = 115/1/60H = 460/1/60
KR
J = Brine with Electric Defrost (Coil & Pan)
B = Brine
E A K--2 4 E 074
UL ULC
Specify When Ordering All Models
KR Series Compact Unit Coolers
Air Defrost Low Profile
Electric Defrost Low Profile
CAPACITY (BTUH)@ 10˚F TD SHIPPING
WGT.(LBS)
555560609090
100100100125140140165180180200220240240265265
MODELKR14E-037KR16E-035KR16E-041KR16E-045KR24E-065KR24E-074KR26E-067KR26E-075KR26E-090KR34E-111KR36E-126KR36E-135KR44E-148KR46E-160KR46E-180KR54E-185KR56E-192KR64E-213KR64E-220KR66E-240KR66E-270
AIRFLOW(CFM)
875845845845
1,7501,7501,6901,6901,6902,6252,5352,5353,5003,3803,3804,3754,2255,2505,2505,0705,070
L29.1329.1329.1329.1347.1347.1347.1347.1347.1365.1365.1365.1383.1383.1583.15101.13101.13119.13119.13119.13119.13
W15.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.32
H15.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.90
DIMENSIONS (IN)
-20 SST 3,7003,5004,1004,5006,5007,4006,7007,5009,00011,10012,60013,50014,80016,00018,00018,50019,20021,30022,00024,00027,000
+20 SST 5,0004,7305,5406,0808,7809,9909,05010,13012,15014,99017,01018,23019,85021,60024,30024,98025,92028,76029,70032,40036,450
SHIPPINGWGT.(LBS)
55606090
1001001001001201401401802202652656090
100125140165180225265
MODELKR16A-040KR16A-054KR16A-060KR26A-072KR26A-089KR26A-105KR26A-115KR26A-125KR36A-134KR36A-159KR36A-170KR46A-216KR56A-242KR66A-310KR66A-340KR14A-058KR24A-096KR24A-117KR34A-143KR34A-173KR44A-191KR44A-232KR54A-290KR64A-348
AIRFLOW(CFM)
845845845
1,6901,6901,6901,6901,6902,5352,5352,5353,3804,2255,0705,070855
1,7501,7102,6252,5653,5003,4204,2755,130
L29.1329.1329.1347.1347.1347.1347.1347.1365.1365.1365.1383.13101.13119.13119.1329.1347.1347.1365.1365.1383.1383.13101.13119.13
W15.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.32
H15.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.90
CAP. (BTUH)@ 10°F TD+25 SST
4,0005,4006,0007,2008,900
10,50011,50012,50013,40015,90017,00021,60024,20031,00034,0005,8009,600
11,70014,30017,30019,10023,20029,00034,800
DIMENSIONS (IN)
LIQUID0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
SUCTION.625.625.625.875.875.875.875.875.875.8751.1251.1251.1251.1251.375.625.875.875.8751.1251.1251.1251.1251.375
HG0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
REFRIGERATION CONNECTIONS
LIQUID0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
SUCTION.625.625.625.625.875.875.875.875.875.875.875.8751.1251.1251.1251.1251.1251.1251.1251.1251.125
HG0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
REFRIGERATION CONNECTIONS
# OFHANGERS
444444444446666444446666
CHARGEDATA LBSOF R404A
111222222333455122233345
# OFHANGERS
444444444444666666666
CHARGEDATA LBSOF R404A
111122222333333445555
CAPACITY (BTUH)@ 10˚F TD
SHIPPINGWGT.(LBS)
555560609090
100100100125140140165180180200220240240265265
MODELKR14E-037KR16E-035KR16E-041KR16E-045KR24E-065KR24E-074KR26E-067KR26E-075KR26E-090KR34E-111KR36E-126KR36E-135KR44E-148KR46E-160KR46E-180KR54E-185KR56E-192KR64E-213KR64E-220KR66E-240KR66E-270
AIRFLOW(CFM)
875845845845
1,7501,7501,6901,6901,6902,6252,5352,5353,5003,3803,3804,3754,2255,2505,2505,0705,070
L29.1329.1329.1329.1347.1347.1347.1347.1347.1365.1365.1365.1383.1383.1583.15101.13101.13119.13119.13119.13119.13
W15.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.32
H15.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.90
DIMENSIONS (IN)
-20 SST 3,7003,5004,1004,5006,5007,4006,7007,5009,00011,10012,60013,50014,80016,00018,00018,50019,20021,30022,00024,00027,000
+20 SST 5,0004,7305,5406,0808,7809,9909,05010,13012,15014,99017,01018,23019,85021,60024,30024,98025,92028,76029,70032,40036,450
SHIPPINGWGT.(LBS)
55606090
1001001001001201401401802202652656090
100125140165180225265
MODELKR16A-040KR16A-054KR16A-060KR26A-072KR26A-089KR26A-105KR26A-115KR26A-125KR36A-134KR36A-159KR36A-170KR46A-216KR56A-242KR66A-310KR66A-340KR14A-058KR24A-096KR24A-117KR34A-143KR34A-173KR44A-191KR44A-232KR54A-290KR64A-348
AIRFLOW(CFM)
845845845
1,6901,6901,6901,6901,6902,5352,5352,5353,3804,2255,0705,070855
1,7501,7102,6252,5653,5003,4204,2755,130
L29.1329.1329.1329.1347.1347.1347.1347.1365.1365.1365.1383.13101.13119.13119.1329.1347.1347.1365.1365.1383.1383.13101.13119.13
W15.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.32
H15.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.90
CAP. (BTUH)@ 10°F TD+25 SST
4,0005,4006,0007,2008,900
10,50011,50012,50013,40015,90017,00021,60024,20031,00034,0005,8009,600
11,70014,30017,30019,10023,20029,00034,800
DIMENSIONS (IN)
LIQUID0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
SUCTION.625.625.625.875.875.875.875.875.875.8751.1251.1251.1251.1251.375.625.875.875.8751.1251.1251.1251.1251.375
HG0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
REFRIGERATION CONNECTIONS
LIQUID0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
SUCTION.625.625.625.625.875.875.875.875.875.875.875.8751.1251.1251.1251.1251.1251.1251.1251.1251.125
HG0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
REFRIGERATION CONNECTIONS
# OFHANGERS
444444444446666444446666
CHARGEDATA LBSOF R404A
111222222333455122233345
# OFHANGERS
444444444444666666666
CHARGEDATA LBSOF R404A
111122222333333445555
KR Series Compact Unit Coolers
Hot Gas Defrost Low Profile
KR SERIES COMPACT UNIT COOLERS
Specifications subject to change without notice.4
KR Motor Options
WATTS
64
128
192
256
320
384
AMPS
0.6
1.2
1.8
2.4
3.0
3.6
115/1/60WATTS
58
116
174
232
290
348
AMPS
0.3
0.6
0.9
1.2
1.5
1.8
208-230/1/60PSC MOTORS OPTIONAL
NOTE: Available Types of Defrost: (K) KGG - 2 Pipe Kool Gas with Kool Gas Pan; (H) HGE - 3 Pipe Hot Gas with Electric Pan; (G) HGG - 3 Pipe Hot Gas with Hot Gas Pan;
(P) KGE - 2 Pipe Kool Gas with Electric Pan
CAPACITY(BTUH) @ 10˚F TD
SHIPPINGWGT.(LBS)
555560609090
100100100125140140165180180200220240240265265
MODELKR14( )-037KR16( )-035KR16( )-041KR16( )-045KR24( )-065KR24( )-074KR26( )-067KR26( )-075KR26( )-090KR34( )-111KR36( )-126KR36( )-135KR44( )-148KR46( )-160KR46( )-180KR54( )-185KR56( )-192KR64( )-213KR64( )-220KR66( )-240KR66( )-270
AIRFLOW(CFM)
875845845845
1,7501,7501,6901,6901,6902,6252,5352,5353,5003,3803,3804,3754,2255,2505,2505,0705,070
L29.1329.1329.1329.1347.1347.1347.1347.1347.1365.1365.1365.1383.1383.1583.15101.13101.13119.13119.13119.13119.13
W15.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.32
H15.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.90
DIMENSIONS (IN)
-20 SST 3,7003,5004,1004,5006,5007,4006,7007,5009,00011,10012,60013,50014,80016,00018,00018,50019,20021,30022,00024,00027,000
+20 SST 5,0004,7305,5406,0808,7809,9909,05010,13012,15014,99017,01018,23019,85021,60024,30024,98025,92028,76029,70032,40036,450
LIQUID0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
SUCTION.625.625.625.625.875.875.875.875.875.875.875.8751.1251.1251.1251.1251.1251.1251.1251.1251.125
HG0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
REFRIGERATION CONNECTIONS # OFHANGERS
444444444444666666666
CHARGEDATA LBSOF R-404A
111122222333333445555
MODEL
1 FAN
2 FAN
3 FAN
4 FAN
5 FAN
6 FAN
NOTE: Information required for complete product Model Key – Motor Type, Voltage Code, Heater Voltage Code. Refer to Model Key on page 2.
WATTS
100
200
300
400
500
600
AMPS
0.6
1.2
1.8
2.4
3.0
3.6
460/1/60SHADED POLE
WATTS
46
92
138
184
230
276
AMPS
0.8
1.6
2.4
3.2
4.0
4.8
115/1/60WATTS
45
90
135
180
225
270
AMPS
0.4
0.8
1.2
1.6
2.0
2.4
208-230/1/60EC MOTORS STANDARD
WATTS
64
128
192
256
320
384
AMPS
0.6
1.2
1.8
2.4
3.0
3.6
115/1/60WATTS
58
116
174
232
290
348
AMPS
0.3
0.6
0.9
1.2
1.5
1.8
208-230/1/60PSC MOTORS OPTIONAL
NOTE: Available Types of Defrost: (K) KGG - 2 Pipe Kool Gas with Kool Gas Pan; (H) HGE - 3 Pipe Hot Gas with Electric Pan; (G) HGG - 3 Pipe Hot Gas with Hot Gas Pan;
(P) KGE - 2 Pipe Kool Gas with Electric Pan
CAPACITY(BTUH) @ 10˚F TD
SHIPPINGWGT.(LBS)
555560609090
100100100125140140165180180200220240240265265
MODELKR14( )-037KR16( )-035KR16( )-041KR16( )-045KR24( )-065KR24( )-074KR26( )-067KR26( )-075KR26( )-090KR34( )-111KR36( )-126KR36( )-135KR44( )-148KR46( )-160KR46( )-180KR54( )-185KR56( )-192KR64( )-213KR64( )-220KR66( )-240KR66( )-270
AIRFLOW(CFM)
875845845845
1,7501,7501,6901,6901,6902,6252,5352,5353,5003,3803,3804,3754,2255,2505,2505,0705,070
L29.1329.1329.1329.1347.1347.1347.1347.1347.1365.1365.1365.1383.1383.1583.15101.13101.13119.13119.13119.13119.13
W15.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.3215.32
H15.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.9015.90
DIMENSIONS (IN)
-20 SST 3,7003,5004,1004,5006,5007,4006,7007,5009,00011,10012,60013,50014,80016,00018,00018,50019,20021,30022,00024,00027,000
+20 SST 5,0004,7305,5406,0808,7809,9909,05010,13012,15014,99017,01018,23019,85021,60024,30024,98025,92028,76029,70032,40036,450
LIQUID0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
SUCTION.625.625.625.625.875.875.875.875.875.875.875.8751.1251.1251.1251.1251.1251.1251.1251.1251.125
HG0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
REFRIGERATION CONNECTIONS # OFHANGERS
444444444444666666666
CHARGEDATA LBSOF R-404A
111122222333333445555
MODEL
1 FAN
2 FAN
3 FAN
4 FAN
5 FAN
6 FAN
NOTE: Information required for complete product Model Key – Motor Type, Voltage Code, Heater Voltage Code. Refer to Model Key on page 2.
WATTS
100
200
300
400
500
600
AMPS
0.6
1.2
1.8
2.4
3.0
3.6
460/1/60SHADED POLE
WATTS
46
92
138
184
230
276
AMPS
0.8
1.6
2.4
3.2
4.0
4.8
115/1/60WATTS
45
90
135
180
225
270
AMPS
0.4
0.8
1.2
1.6
2.0
2.4
208-230/1/60EC MOTORS STANDARD
KR Series Compact Unit Coolers
Electric Defrost Heater Data
KR SERIES COMPACT UNIT COOLERS
Specifications subject to change without notice.5
Hot Gas Defrost Drain Pan Heater DataMODEL
1 FAN – 037, 035, 041, 045
2 FAN – 065, 067, 074, 075, 090
3 FAN – 111, 126, 135
4 FAN – 148, 160, 180
5 FAN – 185, 192
6 FAN – 213, 220, 240, 270
AMPS
2.6
5.2
7.0
8.7
9.6
12.2
WATTS
300
600
800
1000
1100
1400
AMPS
1.3
2.6
3.5
4.4
4.8
6.1
WATTS
300
600
800
1000
1100
1400
115/1/60 230/1/60
NOTE: Information required for complete product Model Key – Motor Type, Voltage Code, Heater Voltage Code.Refer to Model Key on page 2.
DESCRIPTION
LOW NOISE FAN BLADE
STD NON-METALLIC FAN GUARD
OPTIONAL STEEL FAN GUARD
MOTOR MOUNT
STANDARD PSC MOTOR (115V)
STANDARD PSC MOTOR (208-230V)
PART #
4780670
4914791
4915231
4911162
4410806
4410807
DESCRIPTION
STANDARD SHADED POLE MOTOR (460V)
EC MOTOR (115V)
EC MOTOR (208-230V)
DEFROST TERMINATION CONTROL
FAN DELAY CONTROL
PART #
E206446
E317007
E317008
E206100
E201818
DEFROST and DRAIN PAN HEATER E (EDL)
1 FAN
2 FAN
3 FAN
4 FAN
5 FAN
6 FAN
PART #
4850300
4850301
4850302
4850303
4850304
4850305
MODEL
1 FAN – 037, 035, 041, 045
2 FAN – 065, 067, 074, 075, 090
3 FAN – 111, 126, 135
4 FAN – 148, 160, 180
5 FAN – 185, 192
6 FAN – 213, 220, 240, 270
AMPS
2.9
5.8
8.7
11.6
14.5
17.4
WATTS
1000
2000
3000
4000
5000
6000
AMPS
4.3
8.7
13.0
17.4
21.7
26.1
WATTS
1000
2000
3000
4000
5000
6000
AMPS
2.2
4.4
6.6
8.8
11.0
13.2
WATTS
1000
2000
3000
4000
5000
6000
230/1/60 230/3/60 460/1/60
NOTE: Information required for complete product Model Key – Motor Type, Voltage Code, Heater Voltage Code. Refer to Model Key on page 2.
MODEL
1 FAN – 037, 035, 041, 045
2 FAN – 065, 067, 074, 075, 090
3 FAN – 111, 126, 135
4 FAN – 148, 160, 180
5 FAN – 185, 192
6 FAN – 213, 220, 240, 270
AMPS
2.6
5.2
7.0
8.7
9.6
12.2
WATTS
300
600
800
1000
1100
1400
AMPS
1.3
2.6
3.5
4.4
4.8
6.1
WATTS
300
600
800
1000
1100
1400
115/1/60 230/1/60
NOTE: Information required for complete product Model Key – Motor Type, Voltage Code, Heater Voltage Code.Refer to Model Key on page 2.
DESCRIPTION
LOW NOISE FAN BLADE
STD NON-METALLIC FAN GUARD
OPTIONAL STEEL FAN GUARD
MOTOR MOUNT
STANDARD PSC MOTOR (115V)
STANDARD PSC MOTOR (208-230V)
PART #
4780670
4914791
4915231
4911162
4410806
4410807
DESCRIPTION
STANDARD SHADED POLE MOTOR (460V)
EC MOTOR (115V)
EC MOTOR (208-230V)
DEFROST TERMINATION CONTROL
FAN DELAY CONTROL
PART #
E206446
E317007
E317008
E206100
E201818
DEFROST and DRAIN PAN HEATER E (EDL)
1 FAN
2 FAN
3 FAN
4 FAN
5 FAN
6 FAN
PART #
4850300
4850301
4850302
4850303
4850304
4850305
MODEL
1 FAN – 037, 035, 041, 045
2 FAN – 065, 067, 074, 075, 090
3 FAN – 111, 126, 135
4 FAN – 148, 160, 180
5 FAN – 185, 192
6 FAN – 213, 220, 240, 270
AMPS
2.9
5.8
8.7
11.6
14.5
17.4
WATTS
1000
2000
3000
4000
5000
6000
AMPS
4.3
8.7
13.0
17.4
21.7
26.1
WATTS
1000
2000
3000
4000
5000
6000
AMPS
2.2
4.4
6.6
8.8
11.0
13.2
WATTS
1000
2000
3000
4000
5000
6000
230/1/60 230/3/60 460/1/60
NOTE: Information required for complete product Model Key – Motor Type, Voltage Code, Heater Voltage Code. Refer to Model Key on page 2.
KR Series Compact Unit Coolers
Dimensional Data
KR SERIES COMPACT UNIT COOLERS
Specifications subject to change without notice.6
Typical System Wiring
4.28 6.85C
B
15.91 15.26
15.32 13.29 11.75
A
Removable Front Access Panel Electrical Connection End
0.750 F.P.T.Drain Connection
Removable Front Access Panel Refrigerant Connection End
Electrical KnockoutsBack and Top of Unit
Slotted Hanger Holes(0.5 x 0.75)
Distributor LiquidConnection
Air Flow
D
SuctionConnection
HN F BX PS 7 84 L1
L3
L2
HEATERSCOIL
L1
L2
HEATERSCOIL
L1
L2
HEATERSCOIL
L L21
Note: All dimensions in inches.
Allow 15” clearance between rearof coil and wall for maximum
efficiency and minimum noise level.
12” left side clearance allows foroptimum access to electrical
connections.
SIZE A B C D
1 FAN - 18.0 29.13 15.322 FAN - 36.0 47.13 15.323 FAN - 54.0 65.13 15.324 FAN 36.00 72.0 83.15 15.325 FAN 54.00 90.0 101.13 15.326 FAN 54.00 108.0 119.13 15.32
UNIT DIMENSIONS
Krack, a Hussmann Corporation brand 890 Remington BoulevardBolingbrook, Illinois 60440Ph: 630.629.7500
www.krack.com
Printed in U.S.A. ©2017 Krack, a Hussmann Corporation brand KRUC_005_092017
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