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user manual
Liebert CRV
Models:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 C R 0 2 0 R A 1 C 7 S D 1 8 1 1 E L 1 0 P A
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Troubleshooting
Install
Active Alarms
Password
Wiring Connections
Maintenance
Cylinder Replacement
Accessing Submenus
Rack setup screen, page 1
Adjust leveling feet
Page 137
Image 137
Refrigeration and Hydraulic Circuits
NOTES
129
Liebert
®
CRV
™
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Image 137
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Contents
Liebert CRV
Model Number Nomenclature 25 Digit Configuration Number
Table of Contents
Liebert Icom Control
Maintenance
Operation
Calibration and Regulation After Startup
Appendix D Refrigeration and Hydraulic Circuits
Troubleshooting Appendix a Humidifier
Rack overview screen Liebert iCOM default screen symbols
Page
Tables
Important Safety Instructions
Liebert CRV
Important Safety Instructions
Rear
Liebert CRV Component Location
Front
Component location Liebert CR040RC chilled water units
Dry weight, all model types, ± 5%
Overall dimensions / service area
Front Rear
Product Description
Introduction
Handling
Equipment Inspection
Inspection and Unpacking
Packing Material
Shipping weights
Weights without packaging
Handling the Unit While it is Packaged
Center of gravity
197023 Rev
Moving the Unit Using Rigging
Unpacking the Liebert CRV
Unpacking the Liebert CRV
Removing the Unit from the Skid
Step 197023 Rev
Reattach the Baffle Panel
Step
Adjust leveling feet
Prepare the Liebert CRV for Installation
Piping
Fluid Connections
Humidifier Supply Water-Optional Steam Generating Canister
Condensate Piping-Field-Installed
Condensate Pump
General Guidelines
Requirements of Systems Using Water or Glycol
Leak Checking of Unit and Field Piping
Refrigerant Connections
Refrigerant Piping-Air-Cooled Models
Piping Guidelines-Air-Cooled Units
Liebert CRV position relative to the remote condenser
General Layout
Condenser positioning
36 229 x
Pipe Diameter and Thickness
11 x 36 279 x
11 x 48 279 x
TCSV28K TCSV60K TCSV90K
Installing Piping
Bottom Connections
Unit Connections CR20A 50Hz CR35A 50Hz CR20A 60Hz CR35A 60Hz
Unit connections, air-cooled models
410A refrigerant and oil charge for air-cooled models
Vacuum and Refrigerant Charge
Refrigerant charge
Air-cooled condenser refrigerant charge
Connections for vacuum creation and refrigerant charge
Variable Fan Speed Charging
Water connection options
Volume of CRV internal water circuits
Water Connections
Glycol mixtures
Glycol Mixture
Water Connections Water/Glycol-Cooled Models
Top Connections Bottom Rear Connections
Chilled Water Connections Chilled Water Units
Rear View
Connections-water/glycol models
Unit Connections CR20W 50Hz CR35W 50Hz CR20W 60Hz CR35W 60Hz
Unit connections, water/glycol-cooled models
DPN001794 Rev
Unit Connections CR040C 50 Hz CR040C 60 Hz
Unit connections, chilled water models
Remove electrical panel and lower front panel
Electrical Connections
Wiring Connections
Power Supply Cable Connections
Temperature Sensor protection
Protective Features of the Electrically Commutated Fans
Protective Features of Electrical Heaters
Startup
Initial Startup
Checks to Perform after Startup
Automatic Restart
Chilled Water Valve Chilled Water Models
Adjust Baffles to Direct Air Properly
Adjust the baffles to ensure correct airflow direction
Adjust air-blocking plate
Remote Rack Sensor Wiring
DIP switch settings
DIP Switch Settings
Switch Up = on Switch Down = OFF
Optional 2T Rack Sensors
Terminating the Last 2T Sensor on a Network
Set 2T Rack Sensor Identities-DIP Switch settings
CRV Cooling Unit Sensor #5 Sensor #2 Sensor #4 Sensor #1
Sensor #3
Termination jumper setting
Route the can bus wire into the cooling unit
2T rack sensors installed on neighboring racks
Installing 2T sensors on racks
Rack setup screen, page 1
Remote Rack Sensor Operation and Rack View Setup
Cold Aisle
Icon Key Name Function
Liebert Icom Control
Keyboard icons and functions
Accessing Submenus on Large Displays
Accessing Submenus
Navigating Through the Liebert iCOM Menus
Control Interface
Entering a password
Entering a Password
Advanced Menu Unit
Service Menu Unit
Status Menu System View Status Menu Unit 1 View User Menu
Advanced Menu Unit #
Service Menu Unit #
Viewing Multiple Units with a Networked Large Display
Icon Name Description
User Menu password
SET
Rack View
Service menu icons
Sensor Calibration/Setup Allows calibration of sensors
Liebert CRV system screen
Liebert iCOM Display Readout
Summary of Rack
Maintenance
Sensor Readings
Fan Speed
Setpoint screen
Liebert iCOM Control Setup
Calculation of Next Maintenance and Diagnostics
Wellness-Next Maintenance Calculation
Controlling sensor settings
Event Log
Calculating Unit Wellness
Parameters for Next Maintenance Calculation
Cooling
Liebert CRV Operation-Liebert iCOM Control
Heating
Air Flow
Event Log
Liebert iCOM User Menu Screens
Spare Part List
View Network
Active Alarms
Display setup parameters screen
Total run hours parameters screen
Liebert iCOM Service Menu Screens
Setpoints parameters screen
Setpoints parameters screen
Setpoints parameters screen
Unit diary parameters
Unit Diary-Large Display Only
Standby settings / lead-lag parameters screen
Wellness basic settings screen-
Wellness motor settings parameters screen
Wellness compressor 1 settings parameters screen
Wellness electric heater 1 settings parameters screen
Screen displayed Only if unit is equipped with humidifier
Wellness humidifier settings parameters screen
12h Dehum Counter Low Supply Temperature Counter
Diagnostics / service mode parameters screen
Diagnostics / service mode parameters screen
Status LSI
Set alarms parameters screen
Set alarms parameters screen
Set alarms parameters screen
Sensor calibration / setup parameters
Sensor calibration / setup parameters
Teamwork Mode 1 based on
System / network setup parameters-large display only System
System/Network setup parameters Unit-
Static RAM
Rack Overview,
Rack Setup,
Options setup parameters
WA and AL Relay
Function Range Large Display Small Display Imperial metric
Service contact info parameters
Liebert iCOM U2U Ethernet Network
Unit-to-Unit Network Wiring
Operation in Teamwork Mode
Display Service/Network
Wiring a Liebert iCOM U2U Network
Display Service/Network Liebert iCom Display Menu
Liebert iCom Display Menu
Wall-Mount Large Display
Teamwork Modes
No Teamwork
Teamwork Mode
Application of Teamwork Modes
Teamwork Mode 1 with two cooling units
Standby and Cascade
Standby-Rotation Typical Standby Lead/Lag Function
Operation
Liebert CRV 104
Alarms/Events
Thermostatic Expansion Valve
Adjust Superheat Setting with the TEV
Environmental Protection
Calibration and Regulation After Startup
Maintenance
Safety Instructions
Maintenance schedule
Maintenance Schedule
Maintenance Period
Spare Parts
Inspect and Replace the Air Filter
Air Filter Safety Switches
Upper Filter
Differential Pressure Switch tube
Lower Filter
Air-Cooled Condenser and Drycoolers
Condensate Drain and Condensate Pump Systems
Electrical Heaters
Condensate drain
Gas Regulation EC No /2006
Dismantling the Unit
113 Liebert CRV
Problem Possible Cause Corrective Action
Troubleshooting
Unit diagnostics
Liebert iCOM medium control board DIPswitch settings
Appendix a Humidifier
General diagram-humidifier operation
Humidifier Water Connection
Humidifier Water Supply and Plumbing
Low Water Conductivity
Cylinder Replacement
Humidifier Startup and Operation
Humidifier Maintenance
Installing the New Cylinder
Remove the Old Cylinder
Extended Shutdown
Can bus and Ethernet cable wiring
Humidifier Troubleshooting Terms Used
Starting Point
Unit Status Lamp Symptom Corrective actions Yellow Green
Humidifier troubleshooting
Calibration of electrical components
Appendix B Electrical Data
Liebert CRV electrical data 60Hz Amps
Appendix C Electrical Field Connections Descriptions
Factory-Installed locking Disconnect Switch
Keys to numbered components
Electrical Connections for Optional Features for
Refer to C.1 Standard Electrical Connections
General arrangement-air-cooled units
Appendix D Refrigeration and Hydraulic Circuits
General arrangement-water-glycol units
General arrangement-chilled water
129 Liebert CRV
Refrigeration and Hydraulic Circuits Liebert CRV 130
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