Document Outline

• Model Number Nomenclature - 25 Digit Configuration Number
• Important Safety Instructions
• Save These Instructions
• 1.0 Liebert CRV Component Location
  • Figure 1 Component location, common components—All 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%
• 2.0 Introduction
  • 2.1 Product Description
    • Figure 6 Liebert CRV, front and rear views
• 3.0 Inspection and Unpacking
  • 3.1 Equipment Inspection
    • 3.1.1 Packing Material
  • 3.2 Handling
    • Figure 7 Liebert CRV center of gravity
    • Table 2 Center of gravity
    • Table 3 Weights without packaging
    • Table 4 Shipping weights
    • 3.2.1 Handling the Unit While it is Packaged
      • Figure 8 Recommended unit handling equipment
  • 3.3 Moving the Unit Using Rigging
    • Figure 9 Moving the unit using rigging
  • 3.4 Unpacking the Liebert CRV
    • Figure 10 Unpacking the Liebert CRV
  • 3.5 Removing the Unit from the Skid
    • Figure 11 Removing the unit from the skid
  • 3.6 Reattach the Baffle Panel
• 4.0 Prepare the Liebert CRV for Installation
  • Figure 12 Adjust leveling feet
• 5.0 Piping
  • 5.1 Fluid Connections
    • 5.1.1 Condensate Piping—Field-Installed
      • Gravity Drain—Units Without Factory-Installed Condensate Pump
        • Figure 13 Gravity drain
      • Condensate Pump
    • 5.1.2 Humidifier Supply Water—Optional Steam Generating Canister
    • 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 Guidelines—Air-Cooled Units
  • 6.2 Refrigerant Piping—Air-Cooled Models
    • Figure 14 Top refrigerant piping connections
    • Figure 15 Bottom refrigerant piping connections
    • 6.2.1 General Layout
      • Table 5 Condenser positioning
      • Table 6 Liebert CRV position relative to the remote condenser
      • Figure 16 Pipeline air conditioner - condenser
    • 6.2.2 Pipe Diameter and Thickness
      • Table 7 Piping and refrigerant sizes for Liebert Lee-Temp™ condensers with R-410A
      • Table 8 Recommended refrigerant line sizes for Liebert Lee-Temp condensers with R-410A Cu, OD
      • Table 9 Piping and refrigerant sizes for Liebert air-cooled, VFD control condensers with R-410A
      • Table 10 Recommended refrigerant line sizes for Liebert air-cooled, VFD control condensers with R-410A, Cu, OD
    • 6.2.3 Installing Piping
      • Figure 17 Connections—air-cooled models
      • 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 1
    • Table 14 Air-cooled condenser refrigerant charge
    • Table 15 Refrigerant and oil charge for water-cooled models
    • Figure 18 Connections for vacuum creation and refrigerant charge
    • 6.3.1 Evacuation Air-Cooled Models
      • Variable Fan Speed Control Leak Check and Evacuation Procedure
      • Variable Fan Speed Charging
• 7.0 Water Connections
  • Table 16 Water connection options
  • Table 17 Volume of CRV internal water circuits
  • 7.1 Water Connections—Supply Humidifier and Drain Water, All Models
    • Figure 19 Water connection points, bottom entry
  • 7.2 Glycol Mixture
    • Table 18 Glycol mixtures
  • 7.3 Water Connections: Water/Glycol-Cooled Models
    • 7.3.1 Notes for Open-Circuit Applications
    • 7.3.2 Notes for Closed-Circuit Applications
  • 7.4 Chilled Water Connections: Chilled Water Units
    • Figure 20 Chilled water connections
    • Figure 21 Chilled water circuit
    • Figure 22 Air bleeding valve position CW
    • Figure 23 Connections—water/glycol models
    • Table 19 Unit connections, water/glycol-cooled models
    • Figure 24 Connections—chilled water models
    • Table 20 Unit connections, chilled water models
    • Figure 25 Recommended drycooler Installation
• 8.0 Electrical Connections
  • 8.1 Electrical connections
    • Figure 26 Remove electrical panel and lower front panel
    • Figure 27 Power and control cable entry points and routing
    • 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
    • Figure 28 Electrical heating with temperature sensor protection
• 9.0 Startup
  • 9.1 Initial Startup
    • Checks to Perform after Startup
  • 9.2 Automatic Restart
    • Figure 29 Refrigerant line components
  • 9.3 Chilled Water Valve: Chilled Water Models
    • Figure 30 Position of the chilled water valve actuator (for 2- or 3-way valve)
  • 9.4 Adjust Baffles to Direct Air Properly
    • Figure 31 Adjust the baffles to ensure correct airflow direction
    • Figure 32 Adjust air-blocking plate
  • 9.5 Remote Rack Sensor Wiring
    • Figure 33 Figure 2T rack sensor
    • 9.5.1 DIP Switch Settings
      • Figure 34 DIP switches in 2T sensors
      • Table 21 DIP switch settings
    • 9.5.2 Set 2T Rack Sensor Identities—DIP Switch settings
      • Figure 35 Setting 2T Sensor DIP Switches
    • 9.5.3 Terminating the Last 2T Sensor on a Network
      • Figure 36 Termination jumper setting
    • 9.5.4 Route the CAN bus wire into the cooling unit
    • 9.5.5 Installing 2T sensors on racks
      • Figure 37 2T rack sensors installed on neighboring racks
    • 9.5.6 Remote Rack Sensor Operation and Rack View Setup
      • Figure 38 Rack setup screen, page 1 of 3
      • Figure 39 Rack setup screen, page 2 of 3
      • Figure 40 Rack setup screen, page 3 of 3
      • Figure 41 Rack overview screen
• 10.0 Liebert iCOM® Control
  • Table 22 Keyboard icons and functions
  • Figure 42 Liebert iCOM® default screen symbols
  • 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
      • Figure 43 Entering a password
      • Figure 44 Menu tree—Large display, stand-alone
    • 10.1.4 Viewing Multiple Units with a Networked Large Display
      • Figure 45 Menu tree—Large display, networked
      • Figure 46 User menu icons
      • Table 23 User menu icons
      • Figure 47 Service menu icons
      • Table 24 Service menu icons
  • 10.2 Liebert iCOM® Display Readout
    • Figure 48 Liebert CRV system screen
    • Figure 49 Liebert iCOM® menu components for Liebert CRV
  • 10.3 Liebert iCOM® Control Setup
    • Figure 50 Setpoint screen
    • Table 25 Controlling sensor settings
  • 10.4 Event Log
  • 10.5 Spare Part List
  • 10.6 Wellness—Next Maintenance Calculation
    • 10.6.1 Calculation of Next Maintenance and Diagnostics
      • Calculating Unit Wellness
      • Parameters for Next Maintenance Calculation
  • 10.7 Liebert CRV Operation—Liebert 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
    • Figure 51 User menu icons
    • Figure 52 Setpoints parameters screen
    • Spare Part List
    • Event Log
    • View Network
      • Figure 53 Sensor data parameters screen
    • Active Alarms
      • Figure 54 Display setup parameters screen
      • Figure 55 Total run hours parameters screen
  • 10.9 Liebert iCOM® Service Menu Screens
    • Figure 56 Service Menu Main Screen
    • Figure 57 Setpoints parameters screen - Page 1
    • Figure 58 Setpoints parameters screen - Page 2
    • Figure 59 Setpoints parameters screen - Page 3
    • Figure 60 Setpoints parameters screen - Page 4
    • Unit Diary—Large Display Only
      • Table 26 Unit diary parameters
      • Figure 61 Standby settings / lead-lag parameters screen
      • Figure 62 Wellness basic settings screen- Page 1
      • Figure 63 Wellness motor settings parameters screen - Page 2
      • Figure 64 Wellness compressor 1 settings parameters screen - Page 3
      • Figure 65 Wellness electric heater 1 settings parameters screen - Page 4
      • Figure 66 Wellness humidifier settings parameters screen - Page 5
      • Figure 67 Diagnostics / service mode parameters screen - Page 1
      • Figure 68 Diagnostics / service mode parameters screen - Page 2
      • Figure 69 Diagnostics / service mode parameters screen - Page 3
      • Figure 70 Diagnostics / service mode parameters screen - Page 4
      • Figure 71 Diagnostics / service mode parameters screen - Page 5
      • Figure 72 Diagnostics / service mode parameters screen - Page 6
      • Figure 73 Set alarms parameters screen - Page 1
      • Figure 74 Set alarms parameters screen - Page 2
      • Figure 75 Set alarms parameters screen - Page 3
      • Figure 76 Set alarms parameters screen - Page 4
      • Figure 77 Sensor calibration / setup parameters - Page 1
      • Figure 78 Sensor calibration / setup parameters - Page 2
      • Figure 79 Sensor calibration / setup parameters - Page 3
      • Figure 80 Sensor calibration / setup parameters - Page 4
      • Figure 81 System / network setup parameters—System - Page 1
      • Figure 82 System / network setup parameters—large display only System - Page 2
      • Figure 83 System/Network setup parameters Unit- Page 1
      • Figure 84 System/Network setup parameters Unit - Page 2
      • Figure 85 Rack Overview, Page 1
      • Figure 86 Rack Setup, Page 1
      • Figure 87 Rack Setup, Page 2
      • Figure 88 Rack Setup, Page 3
      • Figure 89 Options setup parameters - Page 1
      • Figure 90 Options setup parameters - Page 2
      • 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
    • Figure 91 U2U network setup diagram
    • Wall-Mount Large Display
      • Figure 92 Wiring a large display for U2U network operation
  • 11.4 Teamwork Modes
    • Figure 93 Teamwork modes and sensor management
    • 11.4.1 Application of Teamwork Modes
    • 11.4.2 No Teamwork
    • 11.4.3 Teamwork Mode 1
      • Figure 94 Teamwork Mode 1 with two cooling units
    • 11.4.4 Teamwork Mode 2
    • 11.4.5 Standby—Rotation
      • Typical Standby (Lead/Lag) Function
      • Standby and Cascade
• 12.0 Operation
  • Figure 95 Return air temperature and humidity sensor viewed from the rear of the unit
  • 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 Maintenance
  • 14.1 Safety Instructions
  • 14.2 Spare Parts
  • 14.3 Maintenance Schedule
    • Table 28 Maintenance schedule
  • 14.4 Inspect and Replace the Air Filter
    • Figure 96 Air filter location and input power safety switch
    • Figure 97 Remove the air filters
    • Figure 98 Differential pressure switch tubes
  • 14.5 Condensate Drain and Condensate Pump Systems
    • 14.5.1 Condensate drain
    • 14.5.2 Condensate Pump, Dual-Float
      • Figure 99 Condensate pump
  • 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
• 15.0 Troubleshooting
  • Table 29 Unit diagnostics
  • Table 30 Liebert iCOM® medium control board DIPswitch settings
• Appendix A - Humidifier
  • A.1 Principal of Operation
    • Figure 100 General diagram—humidifier operation
    • A.1.1 Humidifier Water Supply and Plumbing
    • A.1.2 Humidifier Water Connection
      • Figure 101 Water connection to humidifier
    • 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
        • Figure 102 Sensor pins, cylinder plugs
      • Humidifier Maintenance
      • Extended Shutdown
    • A.1.6 Humidifier Troubleshooting
      • Terms Used
  • A.2 Remote Rack Sensor Troubleshooting
    • Figure 103 CAN bus and Ethernet cable wiring
  • 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
    • Figure 104 Electrical field connections
• Appendix D - Refrigeration and Hydraulic Circuits
  • Figure 105 General arrangement—air-cooled units
  • Figure 106 General arrangement—water-glycol units
  • Figure 107 General arrangement—chilled water