Emerson CW026, CW041, CW051, CW060, CW076 Design Manual
...
Liebert® CW™ Thermal Management System
System Design Manual—26 kW — 400 kW, Upflow and Downflow, 50 Hz – 60 Hz
Table of Content
1.0 Nomenclature and Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Liebert CW Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Blower Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.0 Liebert CW System Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.0 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.0 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1 Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2 Cabinet and Floor-planning
Dimensions—Downflow Models with EC Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3 Cabinet and Floor-planning
Dimensions—Upflow Models with EC Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.4 Cabinet and Floor-planning Dimensions
—Downflow Models with Forward-curved Blowers . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.5 Cabinet and Floor-planning Dimensions
—Upflow Models with Forward-curved Blowers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.6 Floor-stand Dimensions—Units with EC Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.7 Floor-stand Dimensions—Units with Forward-curved Blowers. . . . . . . . . . . . . . . . . . . . . 46
4.8 Plenum Dimensions—Units with EC Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
4.9 Plenum Dimensions—Units with Forward-curved Blowers. . . . . . . . . . . . . . . . . . . . . . . . 50
5.0 Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.1 Piping General Arrangement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.2 Piping Connections—Downflow Models with EC Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.3 Piping Connections—Downflow Models with Forward-curved Blowers . . . . . . . . . . . . . . 62
5.4 Piping Connections—Upflow Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
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6.0 Electrical Field Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.1 Electrical Field Connections—Downflow Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.1.1 Standard Electrical Connections for Downflow Models CW146 and CW181 . . . . . . . . . . 71
6.1.2 Optional Electrical Connections for Downflow Models CW146 and CW181. . . . . . . . . . . 72
6.1.3 Optional Low-Voltage Terminal Package Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . 72
6.1.4 Optional Low-Voltage Terminal Package Connections
for Downflow Models CW146 and CW181. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6.2 Electrical Field Connections—Upflow Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Appendix A: Optional Configuration
for Liebert CW Seismic Application . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
A.1 Seismic Certification Criteria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
A.1 Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
A.2 Requirements for Seismic Anchorage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
A.3 Anchor and Load Requirements of Seismic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Appendix B: Optional Liebert Air Economizer™ for Liebert CW . . . . . . . . 95
B.1 Customer-supplied Equipment and Ductwork. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Appendix C: Guide Specifications—Chilled Water
Environmental Control System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Liebert® CW™ System Design Manual ii
List of Figures
Figure 1-1: Downflow model component locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 1-2: Upflow model component locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 1-3: Blower configurations—Downflow, front and rear supply, EC fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 1-4: Blower configurations—Downflow, bottom and under-floor supply, EC fans. . . . . . . . . . . . . . . . . . . . . 5
Figure 1-5: Blower configurations—Downflow, under-floor supply, forward-curved blowers . . . . . . . . . . . . . . . . . . 6
Figure 1-6: Blower configurations—Upflow, EC fans in plenum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 1-7: Blower configurations—Upflow, front return, forward-curved blowers. . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 1-8: Blower configurations—Upflow, rear return, forward-curved blowers . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4-1: Cabinet and floor-planning dimensions, downflow, CW026 – CW084 with EC fans . . . . . . . . . . . . . . 24
Figure 4-2: Cabinet and floor-planning dimensions, downflow,
CW026, CW038 and CW041, with EC fans, front discharge. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 4-3: Cabinet and floor-planning dimensions, downflow,
CW051, CW060, CW076 and CW084, with EC fans, front discharge. . . . . . . . . . . . . . . . . . . . . 26
Figure 4-4: Cabinet and floor-planning dimensions, downflow,
CW089, CW106 and CW114 with EC fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 4-5: Cabinet and floor-planning dimensions, downflow,
CW089, CW106 and CW114 with EC fans, front discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 4-6: Cabinet and floor-planning dimensions, downflow, CW146 and CW181 with EC fans . . . . . . . . . . . . 29
Figure 4-7: Cabinet and floor-planning dimensions, downflow
CW146 and CW181, with EC fans, front discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 4-8: Cabinet and floor-planning dimensions, downflow,
CW300, CW400 with EC fans and filter plenums. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 4-9: Cabinet and floor-planning dimensions, upflow, CW026 – CW084 with EC fans, front air return. . . . 32
Figure 4-10: Cabinet and floor-planning dimensions, upflow,
CW026 - CW084 with EC fans, rear and bottom air return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 4-11: Cabinet and floor-planning dimensions, upflow, CW106, CW114 with EC fans, front return. . . . . . . 34
Figure 4-12: Cabinet and floor-planning dimensions, upflow, CW106, CW114 with EC fans, rear return . . . . . . . 35
Figure 4-13: Cabinet and floor-planning dimensions, downflow,
CW026 - CW084, with forward-curved blowers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 4-14: Cabinet and floor-planning dimensions, downflow,
CW106 and CW114 with forward-curved blowers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 4-15: Cabinet and Floor-planning dimensions, upflow, CW026 – CW084 with forward-curved blowers . . 38
Figure 4-16: Cabinet and Floor-planning dimensions, upflow,
CW106 and CW114 with forward-curved blowers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 4-17: Floor-stand and floor-planning dimensions, downflow, CW026 – CW041 with EC fans . . . . . . . . . . 40
Figure 4-18: Floor-stand and floor-planning dimensions, downflow, CW051 and CW060 with EC fans . . . . . . . . 41
Figure 4-19: Floor-stand and floor-planning dimensions, downflow, CW076 and CW084 with EC fans . . . . . . . . 42
Figure 4-20: Floor-stand and floor-planning dimensions, downflow, CW089, CW106 and CW114 with EC fans . 43
Figure 4-21: Floor-stand and floor-planning dimensions, downflow, CW089, CW106 and CW114 with EC fans . 44
Figure 4-22: Floor-stand and floor-planning dimensions, downflow, CW300 and CW400 with EC fans . . . . . . . . 45
Figure 4-23: Floor-stand planning dimensions, CW026 – CW084 with forward-cu rved blowers. . . . . . . . . . . . . . 46
Figure 4-24: Floor-stand planning dimensions, CW106 and CW114 with forward-curved blowers. . . . . . . . . . . . 47
Figure 4-25: Plenum dimensions, upflow, CW026 — CW084 with EC fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 4-26: Plenum dimensions, upflow, CW106, CW114 with EC fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
iii Liebert® CW™ System Design Manual
Figure 4-27: Plenum dimensions, upflow, CW026 – CW084 with forward-curved blowers . . . . . . . . . . . . . . . . . . 50
Figure 4-28: Plenum dimensions, upflow. CW106 and CW11 4 with forward-curved blowers . . . . . . . . . . . . . . . . 51
Figure 5-1: Piping general arrangement, downflow, CW026 – CW114 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 5-2: Piping general arrangement, downflow, CW146 – CW181 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 5-3: Piping general arrangement, upflow, CW026 – CW114 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 5-4: Primary connection locations, downflow, CW026 – CW041 with EC fans. . . . . . . . . . . . . . . . . . . . . . 56
Figure 5-5: Primary connection locations, downflow, CW051 and CW060 with EC fans. . . . . . . . . . . . . . . . . . . . 57
Figure 5-6: Primary connection locations, downflow, CW076 – CW084 with EC fans. . . . . . . . . . . . . . . . . . . . . . 58
Figure 5-7: Primary connection locations, downflow, CW089, CW106 and CW114 with EC fans. . . . . . . . . . . . . 59
Figure 5-8: Primary connection locations, downflow, CW146 and CW181 with EC fans. . . . . . . . . . . . . . . . . . . . 60
Figure 5-9: Primary connection locations, downflow, CW300 and CW400 with EC fans. . . . . . . . . . . . . . . . . . . . 61
Figure 5-10: Piping connections, downflow, CW026 – CW084 with forward-curved blowers . . . . . . . . . . . . . . . . 62
Figure 5-11: Piping connections, downflow, CW106 and CW114 with forward-curved blowers . . . . . . . . . . . . . . 63
Figure 5-12: Piping connections, upflow, CW026 – CW084 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Figure 5-13: Piping connections, upflow, CW106 and CW114. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Figure 6-1: Electrical field connections, downflow, CW026 – CW084 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Figure 6-2: Electrical field connections (Ethernet), downflow, CW026 – CW084. . . . . . . . . . . . . . . . . . . . . . . . . . 68
Figure 6-3: Electrical field connections, downflow, CW089, CW106 and CW114 . . . . . . . . . . . . . . . . . . . . . . . . . 69
Figure 6-4: Electrical field connections (Ethernet), downflow, CW089, CW106 and CW114. . . . . . . . . . . . . . . . . 70
Figure 6-5: Electrical field connections, downflow, CW146 and CW181 with EC fans . . . . . . . . . . . . . . . . . . . . . 71
Figure 6-6: Electrical field connections (high voltage), upflow, CW026 – CW084 . . . . . . . . . . . . . . . . . . . . . . . . . 74
Figure 6-7: Electrical field connections (low voltage), upflow, CW026 – CW084. . . . . . . . . . . . . . . . . . . . . . . . . . 75
Figure 6-8: Electrical field connections (Ethernet), upflow, CW026 – CW084. . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Figure 6-9: Electrical field connections (high-voltage), upflow, CW089 – CW114. . . . . . . . . . . . . . . . . . . . . . . . . 77
Figure 6-10: Electrical field connections (low-voltage), upflow, CW089 – CW114. . . . . . . . . . . . . . . . . . . . . . . . . 78
Figure 6-11: Electrical field connections (low voltage Ethernet), upflow, CW089 – CW114. . . . . . . . . . . . . . . . . . 79
Figure A-1: Field-welding of anchor bracket—Seismic anchorage rigid floor stand, upflow, CW026 – CW114. . . 85
Figure A-2: Anchor detail—Seismic anchorage rigid floor stand, downflow, CW026 – CW181. . . . . . . . . . . . . . . 86
Figure A-3: Seismic certification as tested connection detail, upflow, CW114 and CW181. . . . . . . . . . . . . . . . . . 87
Figure A-4: IBC-certified seismic floor stand data, downflow, CW026 – CW114 with EC fans . . . . . . . . . . . . . . . 88
Figure A-5: IBC-certified seismic floor stand data, downflow, CW146 – CW181 with EC fans . . . . . . . . . . . . . . . 89
Figure A-6: Upflow plenum seismic mounting data, CW026 – CW114 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Figure A-7: Downflow plenum seismic mounting data, CW026 – CW114 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Figure A-8: Seismic duct connection considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Figure A-9: Seismic electrical wiring considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Figure A-10: Seismic piping considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Figure B-1: Liebert Air Economizer ducting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Figure B-2: Dimensions—Liebert Air Economizer and Liebert CW models CW106D/114D . . . . . . . . . . . . . . . . . 97
Figure B-3: Dimensions—Liebert Air Economizer and Liebert CW models CW026D – CW084D. . . . . . . . . . . . . 98
Liebert® CW™ System Design Manual iv
Figure B-4: Liebert Air Economizer temperature and humidity sensor wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Figure B-5: Liebert Air Economizer supply limit thermistor wiring and restricted airflow switch adjustment . . . . 100
Figure B-6: Liebert Air Economizer damper wiring, CW026 – CW084 models . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Figure B-7: Liebert Air Economizer damper wiring, CW106/CW114 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Figure B-8: Liebert Air Economizer deactivation switch terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
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Liebert® CW™ System Design Manual vi
List of Tables
Table 2-1: Performance data, CW026-CW400, 50/60Hz, upflow and downflow models with EC fans . . . . . . . . . . 9
Table 2-2: Performance data, CW026-CW114, 50/60Hz,
upflow and downflow models with forward-curved blowers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 2-3: Performance data for select Liebert CW Units with EC fans, High Delta T conditions . . . . . . . . . . . . . 11
Table 2-4: Motor size required to deliver rated airflow, models with forward-curved blowers . . . . . . . . . . . . . . . . 12
Table 2-5: Maximum airflow
with maximum motor size at listed static pressure, models with forward-curved blowers . . . . . . . . . 12
Table 2-6: Physical data, Liebert CW026 - CW089, 50/60Hz models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 2-7: Physical data—Liebert CW106 - CW400, 50/60Hz models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 3-1: Electrical data, Liebert CW with EC fans, 60Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 3-2: Electrical data—Forward-curved Blowers, 60Hz systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 3-3: Indoor evaporator fan motor electrical requirements—60Hz systems . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 3-4: Electrical data—EC fan models, 50Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 3-5: Electrical data—Forward-curved blowers, 50Hz systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 3-6: Indoor evaporator fan motor electrical requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table A-1: Comparison of certification criteria, 2000-2006. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Table A-2: Downflow Liebert CW models on floor stand with 36" plenum, CW026-CW081 . . . . . . . . . . . . . . . . . 82
Table A-3: Upflow Liebert CW models on floor stand with 36" plenum, CW026-CW114. . . . . . . . . . . . . . . . . . . . 83
Table A-4: Downflow Liebert CW models on floor stand without plenum, CW026-CW081 . . . . . . . . . . . . . . . . . . 83
Table A-5: Upflow Liebert CW models on floor stand without plenum, CW026-CW114. . . . . . . . . . . . . . . . . . . . . 83
Table A-6: Upflow Liebert CW models direct mount to concrete without plenum, CW026-CW114 . . . . . . . . . . . . 84
Table A-7: Upflow Liebert CW models direct mount to concrete with 36" plenum, CW026-CW114. . . . . . . . . . . . 84
Table B-1: Dimensions—Liebert Air Economizer and Liebert CW models CW026D-CW084D . . . . . . . . . . . . . . . 98
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Liebert® CW™ System Design Manual vi
1.0 Nomenclature and Components
CW
CW = Liebert CW
Floor Mount Chilled
Water
Unit
026 D C S A 2 1234 A
Nominal Capacity, kW
026
038
041
051
060
076
084
089
106
114
146
181
300
400
D = Downflow
U = Upflow
C = Chilled Water
S = Forward-Curved Blower with
Standard Motor
V = Forward-Curved Blower with
Variable Speed Drive
1 = EC Fan
H = EC Fan with THD
2 = 2-Way Valve, Standard Pressure
3 = 3-Way Valve, Standard Pressure
1 = 2-Way Valve, High Pressure
T = 3-Way Valve, High Pressure
A-Z = Standard
configuration
S = SFA
A = 460/3/60
B = 575/3/60
C = 208/3/60
D = 230/3/60
2 = 380/3/60
F = 380/3/50
G = 415/3/50
M = 380-415/3/50
XXXX
1.1 Liebert CW Nomenclature
Liebert CW Nomenclature
Not all combinations of options are available on all units.
Models CW089, CW146, CW181, CW300, and CW400 only available in downflow configuration.
Balance Valve
• Not available on models CW146, CW181, CW300, CW400
Cut Down Frame Height Reduction of Downflow Units
• Not available on units with EC fans
Disconnect Switch, Locking/Non-Locking
• Not available on 208V units with 20hp motor
Flow Switch that Activates the Warning System
• Not available with two-way valve
Humidification and Reheat
• Not available on CW300 or CW400
Steam Generating Canister Humidifier
• Not available on units with EC fans
Steam Humidifier
• Steam Humidifier with upflow units requires a plenum to contain the steam distribution components.
The minimum height for this plenum is 22-3/4 in. (58 cm).
Steam/Hot Water Reheat Package
• Not available on units with EC fans
Turning Vanes
• Not available on upflow units
• Not available on units with EC fans
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CW™ System Design Manual
Nomenclature and Components
Upflow Models
• Front, rear or bottom return must be specified. (Bottom return is not available on CW106 and CW114
models)
THD Transformer
• Available only on the Liebert CW106, CW114, CW146, or CW181 units; required for units requiring a
575V power input
Variable Speed Drive
• Not available on 106 and 114 units with steam generating canister humidifier
• Not available on units with EC fans
• Not available on CW089, CW146, CW181, CW300 or CW400 units
Liebert® CW™ System Design Manual 2
1.2 Components
Optional EC Fan Configuration
Front View
3
10
Rear View
Ships loose for field installation
on CW026-CW060 units.
1
11
15
14
9
12
4
2
5
6
7
8
13
Optional Forward-Curved Blower View
DPN002869
Rev. 3
Optional EC Fan Configuration
Figure 1-1 Downflow model component locations
Components
Item Description Item Description
1 iCOM control display 9 Infrared humidifier (optional)
2 Electric box 10 Reheat (optional)
3 Filters 11 Disconnect (optional)
4 Coil 12 Condensate pump (optional)
5 Motor 13 Variable-frequency drive (optional)
6Blower 14EC fans
7 Fan pulley 15 Smoke detector (optional)
8 Motor sheave and belts
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CW™ System Design Manual
Nomenclature and Components
Optional Forward-curved Blower Configuration
Front View
1
2
3
4
5
6
7
8
9
11
12
13
14
10
15
Optional EC Fan Configuration
Front View
Optional EC Fan Configuration
Rear View
Ships loose for field installation
on bottom return units.
Ships loose for
field installation
DPN002868
Rev. 1
Figure 1-2 Upflow model component locations
Item Description Item Description
1 iCOM control display 9 Infrared humidifier (optional)
2 Electric box 10 Reheat (optional)
3 Filters 11 Disconnect (optional)
4 Coil 12 Condensate pump (optional)
5 Motor 13 Variable-frequency drive (optional)
6 Blower 14 Plenum with EC fans (optional)
7 Fan Pulley 15 Smoke Detector (optional)
8 Motor sheave and belts
Liebert® CW™ System Design Manual 4
1.3 Blower Configurations
Rear Supply
Applicable to installations
without raised floors
Front Supply
Applicable to installations
without raised floors
Under-Floor Supply
(requires 24" minimum height)
Bottom Supply
Figure 1-3 Blower configurations—Downflow, front and rear supply, EC fans
Blower Configurations
Figure 1-4 Blower configurations—Downflow, bottom and under-floor supply, EC fans
5Liebert
®
CW™ System Design Manual
Nomenclature and Components
Front Throw
Rear Throw,
Front Return
Rear Return, Ducted
Figure 1-5 Blower configurations—Downflow, under-floor supply, forward-curved blowers
Figure 1-6 Blower configurations—Upflow, EC fans in plenum
Liebert® CW™ System Design Manual 6
Figure 1-7 Blower configurations—Upflow, front return, forward-curved blowers
Front Throw
Rear Throw
Rear Throw,
Front Throw
Blower Configurations
Figure 1-8 Blower configurations—Upflow, rear return, forward-curved blowers
7Liebert
®
CW™ System Design Manual
Nomenclature and Components
Page intentionally left blank.
Liebert® CW™ System Design Manual 8
2.0 Liebert CW System Data
Table 2-1 Performance data, CW026-CW400, 50/60Hz, upflow and downflow models with EC fans
Model No. 026 038 041 051 060 076 084 089 * 106 114 146 * 181 * 300 * 400 *
CAPACITY DATA BTU/H (KW) BASED ON 45°F (7.2°C) ENTERING WATER, 10°F (5.5°C) WATER RISE
75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH
83.2
115.3
152.7
175.3
231.5
205.5
(60.2)
49.4
(3.1)
10.2
(30.5)
279.5
(81.9)
251.1
(73.6)
14.1
(42.2)
325.7
(95.4)
295.4
(86.6)
68.2
(4.3)
18.4
(55.0)
152.9
(44.8)
152.9
(44.8)
28.2
(1.8)
3.6
(10.7)
202.3
(59.3)
202.3
(59.3)
36.4
(2.3)
5.7
(17.1)
248.7
(72.9)
248.7
(72.9)
44.1
(2.80)
8.1
(24.3)
240.6
(70.50)
230.3
(67.50)
51.6
(3.3)
10.3
(30.7)
297.2
(87.1)
285.5
(83.7)
62.9
(4.0)
14.8
(44.2)
352.1
(103.2)
339.4
(99.4)
73.9
(4.7)
19.9
(59.4)
156.5
(45.9)
156.5
(45.9)
29.1
(1.8)
3.5
(10.5)
215.5
(63.1)
215.5
(63.1)
38.9
(2.5)
6.0
(17.9)
271.5
(79.5)
271.5
(79.5)
48.2
(3.0)
8.8
(26.5)
Total Capacity, kBTUH (kW)
(24.4)
(33.8)
(44.7)
(51.4)
(67.80)
Sensible Capacity, kBTUH (kW) 83.2
Flow Rate, GPM (l/s) 17.6
Pressure Drop, ft (kPA) 11.8
80°F DB, 62.8°F WB (26.7°C DB, 17.1°C WB) 38% RH
Total Capacity, kBTUH (kW) 105.5
Sensible Capacity, kBTUH (kW) 105.5
Flow Rate, GPM (l/s) 22.1
Pressure Drop, ft (kPA) 18.0
85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB) 32.3% RH
Total Capacity, kBTUH (kW) 127.2
Sensible Capacity, kBTUH (kW) 127.2
Flow Rate, GPM (l/s) 26.4
Pressure Drop, ft (kPA) 25.1
CAPACITY DATA BTU/H (KW) B ASE D ON 50° F (10 °C ) EN T ERI NG WAT ER , 12°F ( 6.66 °C ) WA TE R R IS E
75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH
Total Capacity, kBTUH (kW) 46.5
Sensible Capacity, kBTUH (kW) 46.5
Flow Rate, GPM (l/s) 8.6
Pressure Drop, ft (kPA) 3.0
80°F DB, 62.8°F WB (26.7°C DB, 17.1°C WB) 38% RH
Total Capacity, kBTUH (kW) 74.5
Sensible Capacity, kBTUH (kW) 74.5
Flow Rate, GPM (l/s) 13.3
Pressure Drop, ft (kPA) 6.7
85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB) 32.3% RH
Total Capacity, kBTUH (kW) 97.5
(28.60)
Sensible Capacity, kBTUH (kW) 97.5
(28.60)
Flow Rate, GPM (l/s) 17.1
Pressure Drop, ft (kPA) 10.8
* Models CW089, CW146, CW181, CW300 and CW400 available only in downflow.
(24.4)
(1.1)
(35.2)
(30.9)
(30.9)
(1.4)
(53.7)
(37.3)
(37.3)
(1.7)
(75.2)
(13.6)
(13.6)
(0.5)
(9.0)
(21.8)
(21.8)
(0.8)
(20.2)
(1.1)
(32.5)
113.1
(33.1)
24.6
(1.6)
18.1
(54.2)
143.0
(41.9)
140.4
(41.1)
30.1
(1.9)
26.7
(79.7)
169.9
(49.8)
167.2
(49.0)
35.5
(2.2)
36.5
(109.1)
75.3
(22.1)
75.3
(22.1)
13.9
(0.9)
6.0
(17.9)
104.7
(30.7)
104.7
(30.7)
18.7
(1.2)
10.6
(31.7)
132.5
(38.8)
132.5
(38.8)
23.4
(1.50)
16.1
(48.2)
136.6
(40.0)
32.3
(2.0)
16.4
(49.0)
183.8
(53.9)
166.6
(48.8)
38.5
(2.4)
22.6
(67.5)
213.9
(62.7)
195.7
(57.3)
44.5
(2.8)
29.4
(87.8)
102.3
(30.0)
102.3
(30)
18.5
(1.2)
5.9
(17.6)
134
(39.3)
134
(39.3)
23.8
(1.5)
9.2
(27.7)
164.2
(48.1)
164.2
(48.1)
28.8
(1.80)
13.1
(39.2)
173.6
(50.9)
37.8
(2.4)
9.3
(28.0)
219.6
(64.3)
217.3
(63.7)
46.6
(2.9)59(3.7)
13.8
(41.4)
262.4
(76.9)
259.8
(76.1)
55.2
(3.5)
19.0
(56.8)
108.3
(31.7)
108.3
(31.7)
20.4
(1.3)
2.9
(8.6)
158.6
(46.5)
158.6
(46.5)
28.8
(1.8)
5.5
(16.4)
203.6
(59.7)
203.6
(59.7)
36.2
(2.3)
8.4
(25.3)
297.2
(87.1)
264.7
77.60)
63.1
(4.0)
17.9
(53.5)
357.6
(104.8)
322.7
(94.6)
75.1
(4.70)
24.6
(73.6)
415.9
(121.9)
379.2
(111.1)
86.7
(5.5)
32.1
(95.8)
198.7
(58.2)
198.7
(58.2)
36.3
(2.3)
6.4
(19.1)
260.2
(76.2)
260.2
(76.2)
46.5
(2.9)
10.0
(30.0)
318.8
(93.4)
318.8
(93.4)
56.2
(3.6)
14.2
(42.5)
347.1
(101.7)
295.5
(86.6)
72.5
(4.6)
21.6
(64.5)
411.9
(120.70)
356.9
(104.6)
85.4
(5.4)
29.2
(87.1)
474.1
(138.9)
416.6
(122.1)
97.8
(6.2)
37.4
(111.8)
230.1
(67.4)
230.1
(67.4)
41.0
(2.6)
7.5
(22.4)
294.9
(86.4)
294.9
(86.4)
51.8
(3.3)
11.4
(34.2)
356.5
(104.5)
356.5
(104.5)
62.0
(3.9)
15.9
(47.5)
358.4
(105.0)
336.8
(98.7)
76.6
(4.8)
20.1
(60.1)
438.0
(128.3)
414.6
(121.5)
92.4
(5.8)
28.5
(85.1)
515.4
(151)
490.9
(143.8)
107.9
(6.8)
38.0
(113.4)
238.5
(69.9)
238.5
(69.9)
43.9
(2.8)
7.1
(21.2)
320.4
(93.9)
320.4
(93.9)
57.6
(3.6)
11.6
(34.8)
398.9
(116.9)
398.9
(116.9)
70.6
(4.5)
17.0
(50.7)
448.8
(131.5)
393.5
(115.3)
95.5
(6.0)
35.8
(106.9)
537.3
(157.4)
478.6
(140.2)
113.1
(7.1)
48.9
(146)
622.5
(182.4)
561.4
(164.5)
130.1
(8.2)
63.3
(189.2)
300.4
(88.0)
300.4
(88)
55.0
(3.5)
12.7
(38.0)
389.4
(114.1)
389.4
(114.1)
69.8
(4.4)
19.7
(58.9)
474.6
(139.1)
474.6
(139.1)
83.9
(5.3)
27.6
(82.6)
522.9
(153.2)
472.5
(138.4)
109.2
(6.9)
10.9
(32.5)
630.3
(184.7)
575.6
(168.7)
130.6
(8.2)
15.1
(45.2)
733.9
(215.0)
676.1
(198.1)
151.2
(9.5)
19.8
(59.2)
351.3
(102.9)
351.3
(102.9)
62.6
(4.0)
3.8
(11.5)
461.0
(135.1)
461.0
(135.1)
80.8
(5.1)
6.1
(18.3)
565.4
(165.7)
565.4
(165.7)
98.2
(6.2)
8.7
(26.2)
720.1
(211)
604.6
(177.1)
151.1
(9.5)
25.2
(75.3)
850.1
(249.1)
728.4
(213.4)
177
(11.2)
33.7
(100.6)
974.9
(285.6)
848.8
(248.7)
201.9
(12.7)
42.9
(128.1)
478.1
(140.1)
478.1
(140.1)
85.8
(5.4)
8.8
(26.4)
607.6
(178)
607.6
(178)
107.3
(6.8)
13.2
(39.6)
731.1
(214.2)
731.1
(214.2)
127.9
(8.1)
18.2
(54.4)
1003.0
(293.90)
911.4
(267.0)
209.9
(13.2)
10.1
(30.2)
1211.0
(354.8)
1112.0
(325.8)
251.3
(15.9)
14.1
(42.0)
1412.0
(413.7)
1307.0
(383.0)
291.4
(18.4)
18.5
(55.2)
672.7
(197.1)
672.7
(197.1)
120.1
(7.6)
3.5
(10.6)
885.4
(259.4)
885.4
(259.4)
155.5
(9.8)
5.7
(17.1)
1088.0
(318.8)
1088.0
(318.8)
189.2
(11.9)
8.2
(24.4)
1390.0
(407.3)
1163.0
(340.8)
292.6
(18.5)
23.8
(71.0)
1641.0
(480.8)
1402.0
(410.8)
342.6
(21.6)
31.7
(94.8)
1881.0
(551.1)
1634.0
(478.8)
390.6
(24.6)
40.3
(120.5)
920.3
(269.6)
920.3
(269.6)
166.1
(10.5)
8.3
(24.8)
1170
(342.8)
1170
(342.8)
207.6
(13.1)
12.4
(37.2)
1412.0
(413.7)
1407.0
(412.3)
247.9
(15.6)
17.2
(51.4)
9Liebert
®
CW™ System Design Manual
Liebert CW System Data
Table 2-2 Performance data, CW026-CW114, 50/60Hz, upflow and downflow models
with forward-curved blowers
Model No. 026 038 041 051 060 076 084 106 114
Capacity Data BTU/H (kW) Based on 45°F (7.2°C) Entering Water, 10°F (5.5°C) Water Rise
75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH
Total Capacity, kBTUH (kW) 77.5
(22.7)
Sensible Capacity, kBTUH (kW) 77.5
(22.7)
Flow Rate, GPM (l/s) 17.1
(1.1)
Pressure Drop, ft (kPA) 11.2
(33.4)
80°F DB, 62.8°F WB (26.7°C DB, 17.1°C WB) 38% RH
Total Capacity, kBTUH (kW) 99.2
(29.1)
Sensible Capacity, kBTUH (kW) 99.2
(29.1)
Flow Rate, GPM (l/s) 21.5
(1.4)
Pressure Drop, ft (kPA) 17.0
(51.0)
85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB) 32.3% RH
Total Capacity, kBTUH (kW) 120.4
(35.3)
Sensible Capacity, kBTUH (kW) 120.4
(35.3)
Flow Rate, GPM (l/s) 25.7
(1.6)
Pressure Drop, ft (kPA) 23.9
(71.4)
Capacity Data BTU/H (kW) Based on 50°F (10°C) Entering Water, 12°F (6.66°C) Water Rise
75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH
Total Capacity, kBTUH (kW) 41.0
(12.0)
Sensible Capacity, kBTUH (kW) 42.0
(12.0)
Flow Rate, GPM (l/s) 8.2
(0.5)
Pressure Drop, ft (kPA) 2.7
(8.3)
80°F DB, 62.8°F WB (26.7°C DB, 17.1°C WB) 38% RH
Total Capacity, kBTUH (kW) 69.1
(20.2)
Sensible Capacity, kBTUH (kW) 69.1
(20.2)
Flow Rate, GPM (l/s) 12.9
(0.8)
Pressure Drop, ft (kPA) 6.4
(19.2)
85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB) 32.3% RH
Total Capacity, kBTUH (kW) 91.5
(26.8)
Sensible Capacity, kBTUH (kW) 91.5
(26.8)
Flow Rate, GPM (l/s) 16.6
(1.1)
Pressure Drop, ft (kPA) 10.3
(30.8)
Model CW089 not available with forward-curved blowers.
107.1
(31.4)
105.1
(30.8)
24.0
(1.5)
17.3
(51.7)
133.4
(39.1)
131.9
(38.6)
29.2
(1.8)
25.2
(75.3)
159.5
(46.7)
157.9
(46.3)
34.4
(2.2)
34.5
(103.0)
68.1
(20.0)
68.1
(20.0)
13.5
(0.9)
(17.1)
96.8
(28.4)
96.8
(28.4)
18.3
(1.2)
10.1
(30.3)
124.0
(36.3)
124
(36.3)
22.8
(1.4)
15.4
(46.0)
5.7
142.8
(41.8)
128
(37.50)
31.3
(2.0)
15.5
(46.3)
172.6
(50.6)
157.0
(46.0)
37.2
(2.4)
21.3
(63.5)
201.8
(59.1)
185.4
(54.3)
43.0
(2.7)
27.7
(82.7)
94.4
(27.7)
94.4
(27.7)
18.0
(1.1)
5.6
(16.8)
125.2
(36.7)
125.2
(36.7)
23.2
(1.5)
8.8
(26.4)
154.6
(45.3)
154.6
(45.3)
28
(1.8)
12.5
(37.3)
236.7
(69.4)
152.6
(44.7)
51.2
(3.2)
16.5
(49.3)
376.1
(110.2)
192.9
(56.5)
79.0
(5.0)
37.4
(111.7)
524.1
(153.6)
228.8
(67.0)
108.5
(6.8)
68.2
(203.7)
101.8
(29.8)
101.8
(29.8)
20.3
(1.3)
2.8
(8.5)
152.1
(44.6)
152.1
(44.6)
28.6
(1.8)
5.4
(16.3)
196.9
(57.7)
196.9
(57.7)
36.1
(2.3)
8.4
(25.1)
229.5
(67.2)
203.4
(59.6)
49.9
(3.2)
10.4
(31)
278.1
(81.5)
249.5
(73.1)
59.6
(3.8)
14.3
(42.9)
324.7
(95.1)
294.3
(86.2)
68.8
(4.3)
18.7
(56.0)
150.3
(44.0)
150.3
(44.0)
28.5
(1.8)
3.6
(10.9)
200.1
(58.6)
200.1
(58.6)
36.7
(2.3)
5.8
(17.4)
247.1
(72.4)
247.1
(72.4)
44.6
(2.8)
8.2
(24.7)
231.6
(67.9)
221.4
(64.9)
51.9
(3.3)
10.4
(31.1)
288.6
(84.6)
276.9
(81.1)
63.3
(4.0)
14.9
(44.6)
343.8
(100.7)
331.2
(97.0)
74.3
(4.7)
20.1
(60.1)
147.0
(43.1)
147
(43.1)
29.3
(1.8)
3.5
(10.6)
206.4
(60.5)
206.4
(60.5)
39.1
(2.5)
6.0
(18.1)
262.7
(77)
262.7
(77.0)
48.5
(3.1)
9.0
(26.8)
290.6
(85.1)
258
(75.6)
63.7
(4.0)
18.2
(54.5)
351.7
(103.0)
316.7
(92.8)
75.9
(4.8)
25.1
(75.0)
410.6
(120.3)
373.8
(109.5)
87.6
(5.5)
32.7
(97.6)
191.2
(56)
191.2
(56.0)
36.6
(2.3)
6.5
(19.5)
253.4
(74.2)
253.4
(74.2)
47.0
(3.0)
10.2
(30.6)
312.6
(91.6)
312.6
(91.6)
56.8
(3.6)
14.5
(43.3)
345.0
(101.1)
323.4
(94.8)
76.1
(4.8)
19.9
(59.4)
424.1
(124.3)
400.7
(117.4)
91.8
(5.8)
28.1
(84.1)
501.0
(146.8)
476.4
(139.6)
107.2
(6.8)
37.5
(112)
225.8
(66.2)
225.8
(66.2)
43.7
(2.8)
7.0
(20.9)
307.2
(90.0)
307.2
(90.0)
57.2
(3.6)
11.5
(34.3)
385.2
(112.9)
385.2
(112.9)
70.2
(4.4)
16.7
(50.1)
427.8
(125.3)
371.4
(108.8)
92.7
(5.9)
33.9
(101.2)
513.0
(150.3)
453.1
(132.8)
109.7
(6.9)
46.2
(138)
595
(174.3)
532.7
(156.1)
126.0
(8.0)
59.7
(178.3)
281.8
(82.6)
281.8
(82.6)
53.1
(3.4)
11.9
(35.7)
367.4
(107.6)
367.4
(107.6)
67.3
(4.2)
18.4
(55.1)
449.3
(131.6)
449.3
(131.6)
80.9
(5.1)
25.8
(77.2)
Liebert® CW™ System Design Manual 10
Table 2-3 Performance data for select Liebert CW Units with EC fans, High Delta T conditions
Entering
Water
Return Air Conditions of 80°F DB, 62.8°F WB, 52.3°F Dew Point (26.6°C DB, 17.1°C WB) 38.1% RH
14°F (7.8°C)
Water Rise
16°F (8.9°C)
Water Rise
Return Air Conditions of 85°F DB, 64.5°F WB, 52.3°F Dew Point (29.4°C DB, 18.1°C WB) 32.4% RH
14°F (7.8°C)
Water Rise
16°F (8.9°C)
Water Rise
Return Air Conditions of 90°F DB, 66.1°F WB, 52.3°F Dew Point (32.2°C DB, 18.9°C WB) 27.6% RH
14°F (7.8°C)
Water Rise
16°F (8.9°C)
Water Rise
Liebert CW Model
Numbers CW106 CW114 CW146 CW181 CW300 CW400
CAPACITY DATA BTU/HR (KW) BASED ON 50°F (10°C) ENTERING WATER, 0.2" ESP WITH ASHRAE 127-2012 STANDARD
Total, kBTUH (kW)
Sensible, kBTUH (kW)
Flow Rate, GPM (l/s)
Press. Drop, ft (kPa)
Total, kBTUH (kW)
Sensible, kBTUH (kW)
Flow Rate, GPM (l/s)
Press. Drop, ft (kPa)
CAPACITY DATA BTU/HR (KW) BASED ON 50°F (10°C) ENTERING WATER, 0.2" ESP WITH ASHRAE 127-2012 STANDARD
Total, kBTUH (kW)
Sensible, kBTUH (kW)
Flow Rate, GPM (l/s)
Press. Drop, ft (kPa)
Total, kBTUH (kW)
Sensible, kBTUH (kW)
Flow Rate, GPM (l/s)
Press. Drop, ft (kPa)
CAPACITY DATA BTU/HR (KW) BASED ON 50°F (10°C) ENTERING WATER, 0.2" ESP WITH ASHRAE 127-2012 STANDARD
Total, kBTUH (kW)
Sensible, kBTUH (kW)
Flow Rate, GPM (l/s)
Press. Drop,- ft (kPa)
Total, kBTUH (kW)
Sensible, kBTUH (kW)
Flow Rate, GPM (l/s)
Press. Drop, ft (kPa)
301.6 (88.3) 376.7 (110.3) 439.2 (128.6) 588.8 (172.4) 797.1 (233.4) 1054.6 (308.8)
301.6 (88.3) 376.7 (110.3) 439.2 (128.6) 588.8 (172.4) 797.1 (233.4) 1054.6 (308.8)
46.6 (2.9) 58.0 (3.7) 66.1 (4.2) 89.3 (5.6) 120.8 (7.6) 161.6 (10.2)
7.8 (23.3) 14.0 (41.8) 4.2 (12.6) 9.4 (28.1) 3.6 (10.8) 7.9 (23.6)
273.9 (80.2) 353.5 (103.5) 405.0 (118.6) 560.1 (164.0) 733.2 (214.7) 1004.7 (294.2)
273.9 (80.2) 353.5 (103.5) 405.0 (118.6) 560.1 (164.0) 733.2 (214.7) 1004.7 (294.2)
37.4 (2.4) 47.8 (3.0) 53.6 (3.4) 74.6 (4.7) 97.8 (6.2) 135.1 (8.5)
5.2 (15.5) 9.8 (29.3) 2.9 (8.7) 6.8 (20.3) 2.4 (7.2) 5.7 (17.0)
383.9 (112.4) 466.2 (136.5) 548.8 (160.7) 717.2 (210.0) 998.9 (292.5) 1284.8 (376.2)
383.9 (112.4) 466.2 (136.5) 548.8 (160.7) 717.2 (210.0) 998.9 (292.5) 1284.8 (376.2)
58.3 (3.7) 70.7 (4.5) 81.8 (5.2) 107.6 (6.8) 149.5 (9.4) 194.4 (12.3)
11.9 (35.6) 20.1 (60.1) 6.2 (18.5) 13.2 (39.5) 5.3 (15.8) 11.0 (32.9)
359.3 (105.2) 446.0 (130.6) 519.4 (152.1) 692.9 (202.9) 944.3 (276.5) 1242.8 (363.9)
359.3 (105.2) 446.0 (130.6) 519.4 (152.1) 692.9 (202.9) 944.3 (276.5) 1242.8 (363.9)
48.0 (3.0) 59.3 (3.7) 67.9 (4.3) 91.1 (5.7) 124.1 (7.8) 164.9 (10.4)
8.3 (24.8) 14.5 (43.3) 4.4 (13.2) 9.8 (29.3) 3.7 (11.1) 8.1 (24.2)
463.1 (135.6) 552.2 (161.7) 654.0 (191.5) 840.5 (246.1) 1192.9 (349.3) 1506.1 (441.0)
463.1 (135.6) 552.2 (161.7) 654.0 (191.5) 840.5 (246.1) 1192.9 (349.3) 1506.1 (441.0)
69.6 (4.4) 83.0 (5.2) 96.7 (6.1) 125.1 (7.9) 177.1 (11.2) 225.8 (14.2)
16.5 (49.3) 27.0 (80.7) 8.5 (25.4) 17.4 (52.0) 7.2 (21.5) 14.5 (43.3)
440.6 (129.0) 533.8 (156.3) 627.4 (183.7) 819.3 (239.9) 1142.7 (334.6) 1469.9 (430.4)
440.6 (129.0) 533.8 (156.3) 627.4 (183.7) 819.3 (239.9) 1142.7 (334.6) 1469.9 (430.4)
58.1 (3.7) 70.3 (4.4) 81.3 (5.1) 106.9 (6.7) 148.8 (9.4) 193.1 (12.2)
11.7 (35.0) 19.8 (59.2) 6.1 (18.2) 13.0 (38.9) 5.2 (15.5) 10.8 (32.3)
11 Liebert® CW™ System Design Manual
Liebert CW System Data
Table 2-4 Motor size required to deliver rated airflow, models with forward-curved blowers
External Static
Model
026 5050 (2383) 3555555
038 5850 (2761) 5 5 5 — — —
041 5750 (2714) 5 ——————
051 9150 (4318) 7.5 7.5 —————
060 8900 (4200) 7.5 7.5 —————
076 12100 (5711) 10 15 15 15 15 — —
084 11650 (5498) 10 15 15 15 15 — —
106 17100 (8070) 15 15 15 15 15 — —
114 16500 (7787) 15 15 15 15 — — —
* Delivered airflow is less than rated airflow
Table 2-5 Maximum airflow with maximum motor size at listed static pressure,
External Static
Pressure 0.2" 0.4" 0.6" 0.8" 1.0" 1.2" 1.4"
Model
026
038
041
051
060
076
084
106
114
Pressure 0.2" 0.4" 0.6" 0.8" 1.0" 1.2" 1.4"
Rated Airflow
CFM (l/s) Motor Size, hp
models with forward-curved blowers
Rated
Airflow
CFM (l/s) Airflow, CFM (l/s)
5050
(2383)
5850
(2761)
5750
(2714)
9150
(4318)
8900
(4200)
12100
(5711)
11650
(5498)
17100
(8070)
16500
(7787)
5050
(2383)
5850
(2761)
5750
(2714)
9150
(4318)
8900
(4200)
12100
(5711)
11650
(5498)
17100
(8070)
16500
(7787)
5050
(2383)
5850
(2761)
5750
(2714)
9150
(4318)
8900
(4200)
12100
(5711)
11650
(5498)
17100
(8070)
16500
(7787)
5050
(2383)
5850
(2761)
5600
(2643)
9100
(4295)
8750
(4130)
12100
(5711)
11650
(5498)
17100
(8070)
16500
(7787)
5050
(2383)
5750
(2714)
5450
(2572)
8900
(4200)
8550
(4035)
12100
(5711)
11650
(5498)
17100
(8070)
16500
(7787)
5050
(2383)
5600
(2643)
5350
(2525)
8700
(4106)
8400
(3964)
12100
(5711)
11650
(5498)
17100
(8070)
16100 — —
5050
(2383)
5450
(2572)
——
8550
(4035)
8200
(3870)
11600
(5475)
11400
(5380)
16400
(7740)
5050
(2383)
5350
(2525)
8350
(3941)
8050
(3799)
11000
(5191)
NA
16100
(7598)
Liebert® CW™ System Design Manual 12
Table 2-6 Physical data, Liebert CW026 - CW089, 50/60Hz models
Model Sizes 026 038 041 051 060 076 084 089
FAN SECTION
Some options or combinations of options may result in reduced airflow. Consult your sales representative for recommendations.
Fan Data - EC Fans - Available in Upflow and Downflow Orientations (CW089 available in downflow only)
Nominal Air Volume, CFM (CMH) 5,250
(8,925)
Fan Motor, Maximum hp (kW),
Fan Motor, Max hp (kW),
Standard Ext Static Pressure, inches of
Fan Data - Forward-curved Blowers - Variable Pitch, Two-Belt Drive Package - Available in Upflow and Downflow* Configurations
Fan Motor, Maximum hp (kW), each 3.0 (2.2) 5.0 (3.7) 7.5 (5.6) 10.0 (7.5)
Standard Ext Static Pressure, inches of
Face Velocity, EC Fans, FPM (m/s) 450
Chilled Water Valves (Standard valves, Maximum design water pressure 150 PSI[1034.3 kPA]. Higher pressure available as an option.
Consult your sales representative for information).
Valve Actuator, Sensors, and Body Modulating Valve Actuator with Proportional Sensors and either
2-Way Valve (Opt) Close-off Pressure,
Electric Reheat - Three Stage, Fin/Tube
Steam Reheat: 218°F (103.3°C)
Steam, 75°F (23.9°C) EAT
Hot Water Reheat @ 180°F (82.2°C)
EWT & 75°F (23.8°C) EAT
Pressure Drop, PSI (kPA) 3.5 (24.1) 1.6 (11.0) 1.6 (11.0)
Downflow, each
4.0 (3.0) 4.0 (3.0) 4.0 (3.0)
Upflow, each
water (PA)
Number of Fans 1 1 1 2 2 2 2 2
Nominal Air Volume,
CFM (CMH)
water (PA)
Number of Fans 1 1 1 2 2 2 2 2
Face Area, ft
Number of Rows 3 4 6 4 6 4 6 6
Valve CV 11.6 11.6 28.9 28.9 46.2 46.2 46.2 46.2
Valve Size, in. 1 1-1/4 1-1/2 1-1/2 2 2 2 2
PSI (kPA)
Capacity, BTU/HR (kW) 34,130 (10) 51,195 (15) 68,260 (20) 83,325 (25) 102,390 (30)
Capacity, BTU/HR (kW) 85,800
Capacity, BTU/HR (kW) 47,000
Flow Rate, GPM (l/s) 5 (0.31) 5 (0.31) 5 (0.31) 8 (0.50) 8 (0.50) 8 (0.50) 8 (0.50) N/A
4.0 (3.0) 4.0 (3.0) 4.0 (3.0) 4.0 (3.0) 4.0 (3.0) 4.0 (3.0) 4.0 (3.0) 4.0 (3.0)
0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50)
5,050
(8,580)
0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50)
2
(m2)
(2.28)
(25.1)
(13.7)
6,050
(10,285)
5,850
(9,940)
11.7 (1.1) 18.5 (1.7) 25.0 (2.3) 36.3 (3.4)
519
(2.63)
86 (593) 70 (483) 45 (310) 45 (310)
85,800
(25.1)
49,500
(14.5)
5,950
(10,115)
5,750
(9,770)
CHILLED WATER COIL
(2.59)
REHEAT SECTION
Modulating 2-way, 150 PSI (1034.3 kPa) max operating pressure.
Unit CFM reduced by 300 with standard motor (142 l/s)
85,800
(25.1)
Modulating 2-way, 150 PSI (1034.3 kPa) max operating pressure.
Unit CFM reduced by 300 with standard motor (142 l/s)
49,500
(14.5)
9,200 (15,640) 9,200 (15,640)
3.6
for 208/230 V
3.4
for 380 to 460V,
60 Hz/50 Hz
9,150
15,550
510
503
(2.55)
2-Way or 3-Way Valve Body
Not applicable to units with EC fans.
93,400 (27.4) 144,500 (42.4)
Not applicable to units with EC fans.
89,900 (26.3) 89,900 (26.3)
for 208/230 V
for 380 to 460V,
60 Hz/50 Hz
3.6
3.4
8,900
(15,120)
503
(2.55)
12,400
(21,080)
4.0 (3.0) 4.0 (3.0) 4.0 (3.0)
12,100
(20,560)
496
(2.51)
163,200
(47.8)
125,200
(36.7)
11,900
(20,230)
11,650
(19,790)
476
(2.41)
163,200
(47.8)
125,200
(36.7)
12,100
(20,570)
(1.69)
N/A
333
N/A
N/A
13 Liebert® CW™ System Design Manual
Liebert CW System Data
Table 2-6 Physical data, Liebert CW026 - CW089, 50/60Hz models (continued)
Model Sizes 026 038 041 051 060 076 084 089
HUMIDIFIER SECTION
Infrared Humidifier
Capacity, lb/hr (kg/h) 1 1 (5.0) 11 (5.0) 11 (5.0) 17.4 (7.9) 17.4 (7.9) 22.1 (10) 22.1 (10) 22.1 (10)
kW 4.8 4.8 4.8 6.4 6.4 9.6 9.6 9.6
Steam Generating Humidifier,
Not applicable to units with EC fans. (Water Conductivity between 200-500 micro-ohms is required for ideal operation)
Capacity, lb/hr (kg/h) 11 (5.0) 22 (10.0) N/A
kW 3.6 3.6 3.6 7.2 7.2 7.2 7.2 7.2
Steam Grid Humidifier - All Models (Standard Selection, 5 PSIG (34.5 kPa), Steam 14 lb/hr. [6.4 kg/h])
Supply Steam Pressure, PSIG (kPa) — 2 (13.8) 4 (27.6) 5 (34.5) 6 (41.4) 8 (55.2) 10 (68.9) N/A
Capacity, lb/hr (kg/h), w/ 5/32” orifice — 8 (3.6) 12 (5.4) 14 (6.4) 16 (7.3) 19 (8.6) 21 (9.5) N/A
FILTER SECTION
Disposable Type - Nominal Size and Quantities, MERV8 and MERV11 (option)
Downflow Models
Nominal Size, in 18 x 24 24 x 31
Quantity 4 4 4 6 6 8 8 5
Upflow Models (Front Return)
Nominal Size, in 24 x 24 N/A
Quantity 2 2 2 3 3 4 4 N/A
Upflow Models (Bottom and Rear Return)
Nominal Size, in 18 x 24 N/A
Quantity 4 4 4 6 6 8 8 N/A
CONNECTION SIZES
Chilled Water, OD Copper 1-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8
Infrared Humidifier, OD Copper 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4
Condensate Drain, FPT 3/4 3/4 3/4 3/4 3/4 3/4 3/4 1-1/4
Steam Reheat, MPT, FC Blower only 1/2 1/2 1/2 1/2 3/4 3/4 3/4 N/A
Hot Water Reheat, OD Copper, FC
Blower only
Steam Grid Humidifier, MPT, FC
Blower only
5/8 5/8 5/8 7/8 7/8 7/8 7/8 N/A
1/2 1/2 1/2 1/2 1/2 1/2 1/2 N/A
Liebert® CW™ System Design Manual 14
Table 2-7 Physical data—Liebert CW106 - CW400, 50/60Hz models
Model Sizes 106 114 146 181 300 400
FAN SECTION
Some options or combinations of options may result in reduced airflow. Consult your Emerson representative for recommendations.
Fan Data - EC Fans - CW106 & CW114 are available in Upflow and Downflow Orientations. CW146 to CW400 are available in Downflow only.
Nominal Air Volume, CFM (CMH) 17,300
(29,410)
Fan Motor, Maximum hp (kW), Downflow, each 4.0 (3.0) 4.0 (3.0) 3.7 (2.8) 4.9 (3.7) 4.2 (3.4) 5.4 (4.4)
Fan Motor, Maximum hp (kW), Upflow, each 4.0 (3.0) 4.0 (3.0) — — — —
Standard Ext Static Pressure, inches of water (PA) 0.2 (50)
Number of Fans 3 3 3 3 6 6
Fan Data -Forward-curved Blowers - Variable Pitch, Two-Belt Drive Package CW106 & CW114 are available in Upflow and Downflow Orientations.
CW146 to CW400 are available with EC Fans in downflow orientation only.
Nominal Air Volume, CFM (CMH) 17,100
(29,050)
Fan Motor, Maximum hp (kW), each 3.0 (2.2) 5.0 (3.7) — — — —
Standard Ext Static Pressure, inches of water (PA) 0.2 (50) — — — —
Number of Fans 3 3 — — — —
CHILLED WATER COIL
2
Face Area, ft
Number of Rows464646
Face Velocity, EC Fans, FPM (m/s) 476 (1.34) 373 (1.89) 427 (2.16) 359 (1.82) 406 (2.06)
Chilled Water Valves (Standard valves, Maximum design water pressure 150 PSI [1034.3 kPA]. Higher pressure available as an option. Consult
your Emerson representative for information).
Valve Actuator, Sensors, & Body Modulating Valve Actuator with Proportional Sensors and
Valve Size, in. 2
2-Way Valve (Opt) Close-off Pressure, PSI (kPA) 45 (310) 200 (1,378) 200 (1,378) 200 ( 1,378) 200 (1,378)
Electric Reheat - Three-Stage, Fin Tube
Capacity, BTU/HR (kW) 102,390 (30) 102,390 (30) — —
Steam Reheat: 218°F (103.3°C) Steam, 75°F (23.9) EAT Modulating 2-way, 150 PSI (1034.3 kPa) maximum operating
Capacity, BTU/HR (kW) 84,100
Hot Water Reheat @ 180°F (82.2°C) EWT 75°F (23.8°C) EAT Modulating 2-way, 150 PSI (1034.3 kPa) maximum operating pressure.
Capacity, BTU/HR (kW) 133,700 (39.2) — — — —
Flow Rate, GPM (l/s) 8 (0.50) — — — —
Pressure Drop, PSI (kPA) 1.6 (11.0) — — — —
(m2)
Valve CV 46.2 46.2; qty 2 46.2; qty 2 46.2; qty 4 46.2; qty 4
REHEAT SECTION
(24.6)
17,300
(29,410)
16,500
(28,030)
36.3 (3.4) 56.3 (5.3) 112.6 (10.6)
pressure. Not applicable to units with EC fans.
Unit CFM reduced by 300 with standard motor (142 l/s)
85,800
(25.1)
Unit CFM reduced by 300 with standard motor (142 l/s)
21,000
(35,700)
————
either 2-Way or 3-Way Valve Body
————
Not applicable to units with EC fans.
24,000
(40,800)
40,500
(68,850)
45,700
(77690)
15 Liebert® CW™ System Design Manual
Liebert CW System Data
Table 2-7 Physical data—Liebert CW106 - CW400, 50/60Hz models (continued)
Model Sizes 106 114 146 181 300 400
HUMIDIFIER SECTION
Infrared Humidifier Note (50Hz Models are 22.1 lb/h (10.0 kg/h); 9.6 kW)
Capacity, lb/hr (kg/h) 22.1 (10) 22.1 (10) 22.1 (10) — —
kW 9.6 9.6 9.6 9.6 — —
Steam Generating Humidifier (Water Conductivity between 200-500 micro-ohms is required for ideal operation) - Not applicable to units with EC
fans.
Capacity, lb/hr (kg/h) 22 (10.0) 22 (10.0) — — — —
kW9.69.6————
FILTER SECTION
Disposable Type - Nominal Size and Quantities, MERV8 and MERV11 (option)
Downflow Models
Nominal Size, in 24 x 31 21.5 x 24 29.5 x 28.5
Quantity 5 5 10 10 12 12
Upflow Models (Front Return)
Nominal Size, in 18 x 24 N/A N/A N/A N/A
Quantity 2 2 N/A N/A N/A N/A
Upflow Models (Bottom & Rear Return)
Nominal Size, in 18 x 24 N/A N/A N/A N/A
Quantity 10 10 N/A N/A N/A N/A
CONNECTION SIZES
Chilled Water, OD Copper
Infrared Humidifier, OD Copper 1/4” 1/4” 1/4” 1/4” N/A N/A
Condensate Drain, FPT 1-1/4” 1-1/4” 1-1/4” 1-1/4” 1-1/4” 1-1/4”
Steam Reheat, MPT 3/4” 3/4” N/A N/A N/A N/A
Hot Water Reheat, OD Copper 7/8” 7/8” N/A N/A N/A N/A
Steam Humidifier, MPT 1/2” 1/2” N/A N/A N/A N/A
2-1/8” 2-5/8” 3-1/8” 3-1/8”
3-1/8”
(qty 2)
3-1/8”
(qty 2)
Liebert® CW™ System Design Manual 16
3.0 Electrical Data
Table 3-1 Electrical data, Liebert CW with EC fans, 60Hz
Reheat/Humidifier No Reheat/Humidifier Reheat/No Humid ifier No Reheat/No Humidifier
Models Volts
CW026
CW038
CW041
CW051
Downflow
CW051
Upflow
CW060
Downflow
CW060
Upflow
CW076
CW084
CW089
Downflow
CW106
CW114
CW146
Downflow
CW181
Downflow
CW300
Downflow
CW400
Downflow
208 230 380 460 575 208 230 380 460 575 208 230 380 460 575 208 230 380 460 575
FLA 50.3 46.5 24.7 23.0 20.6 22.5 20.3 11.0 9.8 10.6 37.0 35.4 18.6 17.2 13.2 9.2 9.2 4.9 4.0 3.2
WSA 62.9 58.1 30.9 28.8 25.8 28.1 25.4 13.8 12.3 13.3 46.3 44.3 23.3 21.5 16.5 11.5 11.5 6.1 5.0 4.0
OPD70 60 3530303030151515 45 45 2020152020151515
FLA 64.1 59.4 31.6 29.5 25.7 22.5 20.3 11.0 9.8 10.6 50.8 48.3 25.5 23.7 18.3 9.2 9.2 4.9 4.0 3.2
WSA 80.1 74.3 39.5 36.9 32.1 28.1 25.4 13.8 12.3 13.3 63.5 60.4 31.9 29.6 22.9 11.5 11.5 6.1 5.0 4.0
OPD90 80 4040353030151515 70 70 3530252020151515
FLA 64.1 59.4 31.6 29.5 25.7 22.5 20.3 11.0 9.8 10.6 50.8 48.3 25.5 23.7 18.3 9.2 9.2 4.9 4.0 3.2
WSA 80.1 74.3 39.5 36.9 32.1 28.1 25.4 13.8 12.3 13.3 63.5 60.4 31.9 29.6 22.9 11.5 11.5 6.1 5.0 4.0
OPD90 80 4040353030151515 70 70 3530252020151515
FLA 98.7 91.3 47.4 45.3 — 43.2 38.8 20.0 19.1 — 72.1 69.1 35.2 32.4 — 16.6 16.6 7.8 6.2 —
WSA 123.4 114.1 59.3 56.6 — 54.0 48.5 25.0 23.9 — 90.1 86.4 44.0 40.5 — 18.7 18.7 8.8 7.0 —
OPD 125 125 60 60 — 60 45 30 25 — 100 90 45 45 — 20 20 15 15 —
FLA 100.5 93.1 49.4 47.1 40.0 45.0 40.6 22.0 20.9 19.9 73.9 70.9 37.2 34.2 26.5 18.4 18.4 9.8 8.0 6.4
WSA 125.6 116.4 61.8 58.9 50.0 56.3 50.8 27.5 26.1 24.9 92.4 88.6 46.5 42.8 33.1 20.7 20.7 11.0 9.0 7.2
OPD 150 125 70 60 60 50 50 25 30 25 100 90 50 45 35 25 25 15 15 15
FLA 112.6 104.3 54.3 51.8 — 43.2 38.8 20.0 19.1 — 86.0 82.1 42.1 38.9 — 16.6 16.6 7.8 6.2 —
WSA 140.8 130.4 67.9 64.8 — 54.0 48.5 25.0 23.9 — 107.5 102.6 52.6 48.6 — 18.7 18.7 8.8 7.0 —
OPD 150 150 70 70 — 60 45 30 25 — 110 110 60 50 — 25 25 15 15 —
FLA 114.4 106.1 56.3 53.6 45.0 45.0 40.6 22.0 20.9 19.9 87.8 83.9 44.1 40.7 31.5 18.4 18.4 9.8 8.0 6.4
WSA 143.0 132.6 70.4 67.0 56.3 56.3 50.8 27.5 26.1 24.9 109.8 104.9 55.1 50.9 39.4 20.7 20.7 11.0 9.0 7.2
OPD 150 150 80 70 60 50 50 25 30 25 110 110 60 60 40 25 25 15 15 15
FLA 124.1 119.2 63.1 58.7 48.1 45.0 40.6 22.0 19.6 18.0 97.5 97.0 50.9 47.1 36.5 18.4 18.4 9.8 8.0 6.4
WSA 155.1 149.0 78.9 73.4 60.1 56.3 50.8 27.5 24.5 22.5 121.9 121.3 63.6 58.9 45.6 20.7 20.7 11.0 9.0 7.2
OPD 175 150 80 80 70 50 50 25 20 25 125 125 70 60 50 25 25 15 15 15
FLA 124.1 119.2 63.1 58.7 48.1 45.0 40.6 22.0 19.6 18.0 97.5 97.0 50.9 47.1 36.5 18.4 18.4 9.8 8.0 6.4
WSA 155.1 149.0 78.9 73.4 60.1 56.3 50.8 27.5 24.5 22.5 121.9 121.3 63.6 58.9 45.6 20.7 20.7 11.0 9.0 7.2
OPD 175 150 80 80 70 50 50 25 20 25 125 125 70 60 50 25 25 15 15 15
FLA — — — 58.7 48.1 — — — 19.6 18.0 — — — 47.1 36.5 — — — 8.0 6.4
WSA — — — 73.4 60.1 — — — 24.5 22.5 — — — 58.9 45.6 — — — 9.0 7.2
OPD — — — 80 70 — — — 20 25 — — — 60 50 — — — 15 15
FLA 133.3 128.4 68.0 62.7 51.3 54.2 49.8 26.9 23.6 21.2 106.7 106.2 55.8 51.1 39.7 27.6 27.6 14.7 12.0 9.6
WSA 166.6 160.5 85.0 78.4 64.1 67.8 62.3 33.6 29.5 26.5 133.4 132.8 69.8 63.9 49.6 29.9 29.9 15.9 13.0 10.4
OPD 175 175 90 80 70 70 70 35 30 30 150 150 70 70 50 35 35 20 15 15
FLA 133.3 128.4 68.0 62.7 51.3 54.2 49.8 26.9 23.6 21.2 106.7 106.2 55.8 51.1 39.7 27.6 27.6 14.7 12.0 9.6
WSA 166.6 160.5 85.0 78.4 64.1 67.8 62.3 33.6 29.5 26.5 133.4 132.8 69.8 63.9 49.6 29.9 29.9 15.9 13.0 10.4
OPD 175 175 90 80 70 70 70 35 30 30 150 150 70 70 50 35 35 20 15 15
FLA — — — 61.8 50.7 — — — 22.7 20.6 — — — 50.2 39.1 — — — 11.1 9.0
WSA — — — 77.3 63.4 — — — 28.4 25.8 — — — 62.8 48.9 — — — 12.0 9.8
OPD — — — 80 70 — — — 30 30 — — — 70 50 — — — 15 15
FLA — — — 66.3 54.3 — — — 27.2 24.2 — — — 54.7 42.7 — — — 15.6 12.6
WSA — — — 82.9 67.9 — — — 34.0 30.3 — — — 68.4 53.4 — — — 16.9 13.7
OPD — — — 90 70 — — — 35 35 — — — 70 60 — — — 20 15
FLA— — ———————— — — ——————22.2—
WSA— — ———————— — — ——————23.1—
OPD— — ———————— — — ——————25—
FLA— — ———————— — — ——————31.2—
WSA— — ———————— — — ——————32.5—
OPD— — ———————— — — ——————35—
17 Liebert® CW™ System Design Manual
Electrical Data
Models / Motor
HP Volts
CW026
2.0 HP
CW026
3.0 HP
CW038
3.0 HP
CW038
5.0 HP
CW041
3.0 HP
CW041
5.0 HP
CW051
5.0 HP
CW051
7.5 HP
CW060
5.0 HP
CW060
7.5 HP
CW076
7.5 HP
CW076
10.0 HP
CW084
7.5 HP
CW084
10.0 HP
CW106
10.0 HP
CW106
15.0 HP
CW106
20.0 HP
(Upflow only)
Table 3-2 Electrical data—Forward-curved Blowers, 60Hz systems
Reheat/Humidifier No Reheat /Humi dif ier Reheat/ No Hu midif ier No Reheat/ No Hu midi fier
208 230 460 575 208 230 460 575 208 230 460 575 208 230 460 575
FLA 48.6 44.1 22.4 20.1 20.8 17.9 9.2 10.1 35.3 33.0 16.6 12.7 7.5 6.8 3.4 2.7
WSA60.855.128.025.126.022.411.512.644.141.320.815.9 9.4 8.5 4.3 3.4
MFCB 60 50 25 30 30 25 15 15 40 40 20 15 15 15 15 15
FLA 51.746.923.821.323.920.710.611.338.435.818.013.910.6 9.6 4.8 3.9
WSA 64.658.629.826.629.925.913.314.148.044.822.517.413.312.0 6.0 4.9
MFCB 60 50 25 30 35 30 15 15 50 45 20 15 20 20 15 15
FLA 65.559.830.326.423.920.710.611.352.248.724.519.010.6 9.6 4.8 3.9
WSA 81.974.837.933.029.925.913.314.165.360.930.623.813.312.0 6.0 4.9
MFCB 90 80 40 35 35 30 15 15 60 70 35 20 20 20 15 15
FLA 71.665.433.128.630.026.313.413.558.354.327.321.216.715.2 7.6 6.1
WSA 89.581.841.435.837.532.916.816.972.967.934.126.520.919.0 9.5 7.6
MFCB 90 80 40 35 50 45 20 20 70 70 35 25 35 30 15 15
FLA 65.559.830.326.423.920.710.611.352.248.724.519.010.6 9.6 4.8 3.9
WSA 81.974.837.933.029.925.913.314.165.360.930.623.813.312.0 6.0 4.9
MFCB 90 80 40 35 35 30 15 15 60 70 35 20 20 20 15 15
FLA 71.665.433.128.630.026.313.413.558.354.327.321.216.715.2 7.6 6.1
WSA 89.581.841.435.837.532.916.816.972.967.934.126.520.919.0 9.5 7.6
MFCB 90 80 40 35 50 45 20 20 70 70 35 25 35 30 15 15
FLA 98.889.946.739.743.337.420.519.672.267.733.826.216.715.2 7.6 6.1
WSA 123.5 112.4 58.4 49.6 54.1 46.8 25.6 24.5 90.3 84.6 42.3 32.8 20.9 19.0 9.5 7.6
MFCB 125 110 60 50 60 50 30 25 90 80 40 30 35 30 15 15
FLA 106.3 96.7 50.1 42.6 50.8 44.2 23.9 22.5 79.7 74.5 37.2 29.1 24.2 22.0 11.0 9.0
WSA 132.9 120.9 62.6 53.3 63.5 55.3 29.9 28.1 99.6 93.1 46.5 36.4 30.3 27.5 13.8 11.3
MFCB 125 110 60 50 80 70 35 30 100 100 50 40 50 45 20 20
FLA 112.7 102.9 53.2 44.7 43.3 37.4 20.5 19.6 86.1 80.7 40.3 31.2 16.7 15.2 7.6 6.1
WSA 140.9 128.6 66.5 55.9 54.1 46.8 25.6 24.5 107.6 100.9 50.4 39.0 20.9 19.0 9.5 7.6
MFCB 150 125 70 60 60 50 30 25 110 110 50 40 35 30 15 15
FLA 120.2 109.7 56.6 47.6 50.8 44.2 23.9 22.5 93.6 87.5 43.7 34.1 24.2 22.0 11.0 9.0
WSA 150.3 137.1 70.8 59.5 63.5 55.3 29.9 28.1 117.0 109.4 54.6 42.6 30.3 27.5 13.8 11.3
MFCB 150 125 80 60 80 70 35 30 110 110 50 45 50 45 20 20
FLA 129.9 122.8 61.7 50.7 50.8 44.2 22.6 20.6 103.3 100.6 50.1 39.1 24.2 22.0 11.0 9.0
WSA 162.4 153.5 77.1 63.4 63.5 55.3 28.3 25.8 129.1 125.8 62.6 48.9 30.3 27.5 13.8 11.3
MFCB 175 150 80 60 80 70 35 30 125 125 60 50 50 45 20 20
FLA 136.5 128.8 64.7 52.7 57.4 50.2 25.6 22.6 109.9 106.6 53.1 41.1 30.8 28.0 14.0 11.0
WSA 170.6 161.0 80.9 65.9 71.8 62.8 32.0 28.3 137.4 133.3 66.4 51.4 38.5 35.0 17.5 13.8
MFCB 175 150 80 60 90 80 40 35 125 125 70 50 60 60 30 20
FLA 129.9 122.8 61.7 50.7 50.8 44.2 22.6 20.6 103.3 100.6 50.1 39.1 24.2 22.0 11.0 9.0
WSA 162.4 153.5 77.1 63.4 63.5 55.3 28.3 25.8 129.1 125.8 62.6 48.9 30.3 27.5 13.8 11.3
MFCB 175 150 80 60 80 70 35 30 125 125 60 50 50 45 20 20
FLA 136.5 128.8 64.7 52.7 57.4 50.2 25.6 22.6 109.9 106.6 53.1 41.1 30.8 28.0 14.0 11.0
WSA 170.6 161.0 80.9 65.9 71.8 62.8 32.0 28.3 137.4 133.3 66.4 51.4 38.5 35.0 17.5 13.8
MFCB 175 150 80 60 90 80 40 35 125 125 70 50 60 60 30 20
FLA 136.5 128.8 64.7 52.7 57.4 50.2 25.6 22.6 109.9 106.6 53.1 41.1 30.8 28.0 14.0 11.0
WSA 170.6 161.0 80.9 65.9 71.8 62.8 32.0 28.3 137.4 133.3 66.4 51.4 38.5 35.0 17.5 13.8
MFCB 175 150 80 60 90 80 40 35 125 125 70 50 60 60 30 20
FLA 151.9 142.8 71.7 58.7 72.8 64.2 32.6 28.6 125.3 120.6 60.1 47.1 46.2 42.0 21.0 17.0
WSA 189.9 178.5 89.6 73.4 91.0 80.3 40.8 35.8 156.6 150.8 75.1 58.9 57.8 52.5 26.3 21.3
MFCB 200 175 90 70 125 110 50 45 175 150 80 60 100 90 45 35
FLA 165.1 154.8 77.7 63.7 86.0 76.2 38.6 33.6 138.5 132.6 66.1 52.1 59.4 54.0 27.0 22.0
WSA 206.4 193.5 97.1 79.6 107.5 95.3 48.3 42.0 173.1 165.8 82.6 65.1 74.3 67.5 33.8 27.5
MFCB 225 200 110 90 150 125 70 60 200 200 90 70 125 110 60 45
Liebert® CW™ System Design Manual 18
Models / Motor
HP Volts
CW114
10.0 HP
CW114
15.0 HP
CW114
20.0 HP
(Upflow only)
Table 3-2 Electrical data— Fo rward-curved Blowers, 60Hz system s (c on t in u ed )
Reheat/Humidifier No Reheat /Humi dif ier Reheat/ No Hu midif ier No Reheat/ No Hu midi fier
208 230 460 575 208 230 460 575 208 230 460 575 208 230 460 575
FLA 136.5 128.8 64.7 52.7 57.4 50.2 25.6 22.6 109.9 106.6 53.1 41.1 30.8 28.0 14.0 11.0
WSA 170.6 161.0 80.9 65.9 71.8 62.8 32.0 28.3 137.4 133.3 66.4 51.4 38.5 35.0 17.5 13.8
MFCB 175 150 80 60 90 80 40 35 125 125 70 50 60 60 30 20
FLA 151.9 142.8 71.7 58.7 72.8 64.2 32.6 28.6 125.3 120.6 60.1 47.1 46.2 42.0 21.0 17.0
WSA 189.9 178.5 89.6 73.4 91.0 80.3 40.8 35.8 156.6 150.8 75.1 58.9 57.8 52.5 26.3 21.3
MFCB 200 175 90 70 125 110 50 45 175 150 80 60 100 90 45 35
FLA 165.1 154.8 77.7 63.7 86.0 76.2 38.6 33.6 138.5 132.6 66.1 52.1 59.4 54.0 27.0 22.0
WSA 206.4 193.5 97.1 79.6 107.5 95.3 48.3 42.0 173.1 165.8 82.6 65.1 74.3 67.5 33.8 27.5
MFCB 225 200 110 90 150 125 70 60 200 200 90 70 125 110 60 45
19 Liebert® CW™ System Design Manual
Electrical Data
Table 3-3 Indoor evaporator fan motor electrical requirements—60Hz systems
208 230 460 575
Hp
2.0 7.5 46.9 6.8 40.8 3.4 20.4 2.7 16.2
3.0 10.6 66.0 9.6 58.0 4.8 26.8 3.9 23.4
5.0 16.7 105.0 15.2 91.0 7.6 45.6 6.1 36.6
7.5 24.2 152.0 22.0 132.0 11.0 66.0 9.0 54.0
10.0 30.8 193.0 28.0 168.0 14.0 84.0 11.0 66.0
15.0 46.2 290.0 42.0 252.0 21.0 126.0 17.0 102.0
20.0 59.4 321.0 54.0 290.0 27.0 145.0 22.0 116.0
1. Refer to General Data Section for standard fan motor size on units.
2. FLA = Full Load Amps (does not reflect typical operating amps)
WSA = Wire Sizing Amps (Minimum supply circuit ampacity)
MFCB = Maximum Fuse or Circuit Breaker Size
3. Amperage requirements are based on the rated max FLA current of each component in the unit. The rated
max FLA current of the unit is not the sum total of all components, but is the total of the components which
operate during maximum electrical load conditions.
4. The values in the chart are for power of the unit only.
5. Units are 3 phase, 60 cycle.
6. For units with other variations not listed above, consult your Emerson representative for electrical
requirements.
7. SCCR - Short Circuit Current Rating 65,000 rms (less than 480V), 25,000 rms (575V).
FLA LRA FLA LRA FLA LRA FLA LRA
Liebert® CW™ System Design Manual 20
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