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MODEL NUMBER NOMENCLATURE - 25 DIGIT CONFIGURATION NUMBER
TABLE OF CONTENTS
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FIGURES
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TABL ES
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
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1.0 LIEBERT CRV COMPONENT LOCATION
Figure 1 Component location, common componentsAll models
Figure 2 Component location - Liebert CR035RA, CR020RA air-cooled units
Figure 3 Component location - Liebert CR035RW, CR020RW water/glycol-cooled units
Figure 4 Component location - Liebert CR040RC chilled water units
Figure 5 Overall dimensions / service area
Table 1 Dry weight, all model types, 5%
B S
S
Rear
A
Rear
2.0 I
2.1 Product Description
3.0 INSPECTION AND UNPACKING
R
3.1 Equipment Inspection
3.1.1 Packing Material
3.2 Handling
3.2.1 Handling the Unit While it is Packaged
3.3 Moving the Unit Using Rigging
3.4 Unpacking the Liebert CRV
3.5 Removing the Unit from the Skid
3.6 Reattach the Baffle Panel
4.0 PREPARE THE LIEBERT CRV FOR INSTALLATION
5.0 P
5.1 Fluid Connections
5.1.1 Condensate PipingField-Installed
Gravity DrainUnits Without Factory-Installed Condensate Pump
Condensate Pump
CORRECT
INCORRECT
5.1.3 Requirements of Systems Using Water or Glycol
General Guidelines
Leak Checking of Unit and Field Piping
6.0 REFRIGERANT CONNECTIONS
6.1 Piping GuidelinesAir-Cooled Units
6.2 Refrigerant PipingAir-Cooled Models
6.2.1 General Layout
Figure 16 Pipeline air conditioner - condenser
B
6.2.2 Pipe Diameter and Thickness
Table 8 Recommended refrigerant line sizes for Liebert Lee-Temp condensers with R-410A Cu, OD
A
(Distance) D = A + B + C CDT = Conditioner COND = Condenser
Table 9 Piping and refrigerant sizes for Liebert air-cooled, VFD control condensers with R-410A
6.2.3 Installing Piping
Refrigerant Connections
Top Connections
Liebert CRV24
Figure 17 Connectionsair-cooled models
(possible with raised floor)
RG RL
Table 11 Unit connections, air-cooled models
6.3 Vacuum and Refrigerant Charge
Table 12 R-410A refrigerant and oil charge for air-cooled models
Table 13 Refrigerant charge
Table 14 Air-cooled condenser refrigerant charge
Table 15 Refrigerant and oil charge for water-cooled models
6.3.1 Evacuation Air-Cooled Models Variable Fan Speed Control Leak Check and Evacuation Procedure
Variable Fan Speed Charging
7.0 WATER CONNECTIONS
7.1 Water ConnectionsSupply Humidifier and Drain Water, All Models
7.2 Glycol Mixture
7.3 Water Connections: Water/Glycol-Cooled Models
7.3.1 Notes for Open-Circuit Applications
7.3.2 Notes for Closed-Circuit Applications
Liebert CRV
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Water Connections
33 Liebert CRV
Figure 23 Connectionswater/glycol models
HS CP
Bottom Connections
Top Connections
(possible with raised floor)
DPN001793 Rev. 2
Rear
Table 19 Unit connections, water/glycol-cooled models
Figure 24 Connectionschilled water models
DPN001794 Rev. 2
Figure 25 Recommended drycooler Installation
Table 20 Unit connections, chilled water models
See hydraulic drawings in the Appendix D
8.0 ELECTRICAL CONNECTIONS
8.1 Electrical connections
8.1.1 Power Supply Cable Connections
Wiring Connections
8.2 Protective Features of the Electrically Commutated Fans
8.3 Protective Features of Electrical Heaters
9.0 S
9.1 Initial Startup
Checks to Perform after Startup
9.2 Automatic Restart
9.3 Chilled Water Valve: Chilled Water Models
9.4 Adjust Baffles to Direct Air Properly
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9.5 Remote Rack Sensor Wiring
Figure 33 Figure 2T rack sensor
9.5.1 DIP Switch Settings
2T Sensor
Table 21 DIP switch settings
Back
Front View
9.5.2 Set 2T Rack Sensor IdentitiesDIP Switch settings
9.5.3 Terminating the Last 2T Sensor on a Network
9.5.4 Route the CAN bus wire into the cooling unit
321 321
Unterminated Terminated
Source DPN001983 rev0
9.5.6 Remote Rack Sensor Operation and Rack View Setup
Cold Aisle
10.0 LIEBERT ICOM CONTROL
?
ESC
10.1 Navigating Through the Liebert iCOM Menus
10.1.1 Control Interface
10.1.2 Accessing Submenus
Accessing Submenus on Large Displays
10.1.3 Entering a Password
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Figure 46 User menu icons
Table 23 User menu icons
C / F % RH SET
!
1234h
1 2 39 6 SET
Figure 47 Service menu icons
DO
Table 24 Service menu icons
+/-
Table 23 User menu icons (continued)
RACK VIEW
+ / -
10.2 Liebert iCOM Display Readout
CRV
Liebert
28.02.2011 15:03 SYSTEM ON 28.02.2011 14:07 (01) UNIT ON 28.02.2011 14:07 (01) POWER ON
Figure 49 Liebert iCOM menu components for Liebert CRV
CRV
UNIT 1
F
69.3
Liebert
SETPOINTS UNIT 02
10.4 Event Log
10.5 Spare Part List
10.6 WellnessNext Maintenance Calculation
10.6.1 Calculation of Next Maintenance and Diagnostics
Calculating Unit Wellness
Parameters for Next Maintenance Calculation
10.7 Liebert CRV OperationLiebert iCOM Control
10.7.1 Cooling
10.7.2 Heating
10.7.3 Air Flow
10.7.4 Humidification
10.8 Liebert iCOM User Menu Screens
Spare Part List
Remote Sens or
Supply Sensor
Event Log
View Network
Active Alarms
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Figure 55 Total run hours parameters screen
10.9 Liebert iCOM Service Menu Screens
+/-
SERVICE MENUS
+
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Unit DiaryLarge Display Only
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Figure 85 Rack Overview, Page 1
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Table 27 Service contact info parameters
11.0 OPERATION IN TEAMWORK MODE
11.1 Unit-to-Unit Network Wiring
11.2 Liebert iCOM U2U Ethernet Network
11.3 Wiring a Liebert iCOM U2U Network
Wall-Mount Large Display
11.4 Teamwork Modes
Liebert iCOM I/O Board
Large Graphics Display (Rear View)
11.4.1 Application of Teamwork Modes
11.4.2 No Teamwork
11.4.3 Teamwork Mode 1
11.4.4 Teamwork Mode 2
C1 C2
11.4.5 StandbyRotation Typical Standby (Lead/Lag) Function
Standby and Cascade
12.0 O
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12.1 Alarms/Events
13.0 CALIBRATION AND REGULATION AFTER STARTUP
13.1 Thermostatic Expansion Valve
13.1.1 Determine Suction Superheat
13.1.2 Adjust Superheat Setting with the TEV
13.2 Environmental Protection
14.0 M
14.1 Safety Instructions
14.2 Spare Parts
14.3 Maintenance Schedule
14.4 Inspect and Replace the Air Filter
Table 28 Maintenance schedule
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14.5 Condensate Drain and Condensate Pump Systems
14.5.1 Condensate drain
14.5.2 Condensate Pump, Dual-Float
14.6 Air-Cooled Condenser and Drycoolers
14.7 Electrical Heaters
14.8 Dismantling the Unit
14.9 F-Gas Regulation (EC) No. 842/2006
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15.0 T
Table 29 Unit diagnostics
Table 30 Liebert iCOM medium control board DIPswitch settings
APPENDIX A-HUMIDIFIER
A.1 PRINCIPAL OF OPERATION
A.1.1 Humidifier Water Supply and Plumbing
A.1.2 Humidifier Water Connection
A.1.3 Humidifier Startup and Operation
A.1.4 Low Water Conductivity
A.1.5 Cylinder Replacement
Remove the Old Cylinder
Installing the New Cylinder
Cylinder Pin Cylinder Pin
Humidifier Maintenance
Extended Shutdown
A.2 REMOTE RACK SENSOR TROUBLESHOOTING
A.3 STARTING POINT
Table 31 Humidifier troubleshooting
APPENDIX B-ELECTRICAL DATA
Table 32 Liebert CRV electrical data - 60Hz (Amps)
Table 33 Calibration of electrical components
APPENDIX C-ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS
C.1 STANDARD ELECTRICAL CONNECTIONS
C.2 ELECTRICAL CONNECTIONS FOR OPTIONAL FEATURES
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APPENDIX D-REFRIGERATION AND HYDRAULIC CIRCUITS
Figure 105 General arrangementair-cooled units
Distributor
DPN001984 Rev. 4
Outdoor VFD Condenser
Figure 106 General arrangementwater-glycol units
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Ensuring The High Availability Of Mission-Critical Data And Applications.
