Emerson Liebert CRV User manual

Brand: Emerson

Model: Liebert CRV

Category: Heat pumps

Type: User manual

Liebert

CRV

™

Row-Based Cooling System

A SmartAisle™ Technology

User Manual–60Hz

600mm Wide Air-Cooled, Water/Glycol-Cooled and Chilled Water Units

300mm Wide Air-Cooled Units

TABLE OF CONTENTS

1.0 LIEBERT CRV COMPONENT LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

2.1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1.1 SmartAisle

™

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.0 INSPECTION AND UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1 Equipment Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.1 Packing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2.1 Handling the Unit While it is Packaged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.3 Moving the Unit Using Rigging—600mm (24") Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.4 Unpacking the Liebert CRV—600mm (24") Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.5 Removing the Unit from the Skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.6 Reattaching the Baffle Panel—600mm (24") Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.7 Uncrating and Removing the Liebert CRV from the Skid—300mm (12") DX Units . . . . . . 18

4.0 PREPARING THE LIEBERT CRV FOR INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

5.0 PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.1 Fluid Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.2 Refrigeration and Hydraulic Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.2.1 Condensate Drain Piping—Field-Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.2.2 Gravity Drain—Units Without Factory-Installed Condensate Pump—600mm (24")

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.2.3 Gravity Drain—300mm (12") DX Units Without Factory-Installed Condensate Pump . . . . 28

5.2.4 Humidifier Supply Water—Optional Steam Generating Canister—600mm (24")

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.2.5 Requirements of Systems Using Water or Glycol—600mm (24") Models . . . . . . . . . . . . . . . . 28

6.0 REFRIGERANT CONNECTIONS FOR AIR-COOLED UNITS . . . . . . . . . . . . . . . . . . . . . . . . . . .31

6.1 Piping Guidelines—Air-Cooled Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.2 Refrigerant Piping—Air-Cooled Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6.3 Liebert MC Condenser Selection—600mm (24") and 300mm (12")CRV Units. . . . . . . . . . . 34

6.4 Liebert Fin/Tube Condenser Selection—600mm (24") Units. . . . . . . . . . . . . . . . . . . . . . . . . 34

6.5 General Piping Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.5.1 Heat Rejection Connection Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6.5.2 Piping Guidelines for Liebert MC and Fin/Tube Condensers . . . . . . . . . . . . . . . . . . . . . . . . . 38

6.6 Vacuum and Refrigerant Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

6.6.1 Evacuation Air-Cooled Models—600mm (24") and 300mm (12")Models. . . . . . . . . . . . . . . . . 43

6.7 Calculating Charging Values for Liebert MC Condenser Systems, Units without

Liebert Lee-Temp

™

Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

6.8 Charging Fin/Tube Condenser with Variable Fan Speed Control. . . . . . . . . . . . . . . . . . . . . 49

7.0 WATER CONNECTIONS FOR WATER/GLYCOL UNITS—600MM (24") MODELS . . . . . . . . . . .50

7.1 Water Connections—Supply Humidifier and Drain Water . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7.2 Glycol Mixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7.3 Water Connections: Water/Glycol-Cooled Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

7.3.1 Notes for Open-Circuit Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

7.3.2 Notes for Closed-Circuit Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

8.0 WATER CONNECTIONS FOR CHILLED WATER UNITS—600MM (24") UNITS . . . . . . . . . . . . .54

9.0 ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

9.1 Electrical Field Connections Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

9.1.1 Standard Electrical Connections—600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

9.1.2 Electrical Connections for Optional Features—600mm (24") models . . . . . . . . . . . . . . . . . . . 58

9.1.3 Standard Electrical Field Connections—300mm (12") DX Models . . . . . . . . . . . . . . . . . . . . . 61

9.1.4 Electrical Field Connections for Optional Features—300mm (12") DX Models . . . . . . . . . . . 61

9.2 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

9.2.1 Power Supply Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

9.3 Protective Features of the Electronically Commutated Fans—All Models. . . . . . . . . . . . . . 71

9.4 Protective Features of Electrical Heaters—600mm (24") Models . . . . . . . . . . . . . . . . . . . . . 72

10.0 STARTUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

10.1 Initial Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

10.2 Automatic Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

10.3 Chilled Water Valve: Chilled Water 600mm (24") Models. . . . . . . . . . . . . . . . . . . . . . . . . . . 76

10.4 Adjust Baffles to Direct Air Properly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

10.4.1 Adjust Baffles on 600mm (24") Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

10.4.2 Adjust Baffles on 300mm (12") Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

10.4.3 Adjust Blocker Plate—600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

11.0 LIEBERT ICOM

CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

11.1 Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

11.1.1 Navigating Through the Liebert iCOM Menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

11.1.2 Accessing Submenus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

11.1.3 Submenus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

11.1.4 Viewing Multiple Units with a Networked Large Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

11.2 Liebert iCOM Display Readout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

11.3 Liebert CRV Operation—Liebert iCOM Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

11.3.1 Entering a Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

11.3.2 Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

11.3.3 Fan Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

11.3.4 Air Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

11.3.5 Humidification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

11.4 Liebert iCOM User Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

11.5 Liebert iCOM Service Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

11.6 Service-Standby Settings Menu Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

11.7 Service—Wellness Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

11.7.1 Calculating Unit Wellness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

11.8 Service—Diagnostics Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

11.9 Service—Set Alarms Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

11.10 Service—Sensor Calibration Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

11.11 Service—System/Network Unit-Level Setup Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . 122

11.12 Service—Options Setup Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

11.13 Service—Remote Sensors Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

12.0 OPERATION IN TEAMWORK MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131

12.1 Unit-to-Unit Network Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

iii

12.2 Liebert iCOM U2U Ethernet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

12.3 Wiring a Liebert iCOM U2U Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

12.4 Teamwork Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

12.4.1 Application of Teamwork Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

12.4.2 No Teamwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

12.4.3 Teamwork Mode 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

12.4.4 Teamwork Mode 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

12.4.5 Teamwork Mode 3 (Optimized Aisle) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

12.4.6 Standby-Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

13.0 REMOTE RACK SENSOR WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

13.1 DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

13.2 Set 2T Rack Sensor Identities-DIP Switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

13.3 Terminating the Last 2T Sensor on a Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

13.3.1 Using the Factory-Supplied Plug to Terminate the Last 2T Sensor on a Network . . . . . . . 142

13.3.2 Using Jumper to Terminate the Last 2T Rack Sensor on a Network . . . . . . . . . . . . . . . . . . 142

13.4 CANbus and Ethernet Cable Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

13.5 Route the CANbus Wire into the Cooling Unit-600mm (24") . . . . . . . . . . . . . . . . . . . . . . . 147

13.6 Route the CANbus Wire into the Cooling Unit-300mm (12") . . . . . . . . . . . . . . . . . . . . . . . 148

13.7 Sensor Location and Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

13.8 Remote Rack Sensor Operation and Rack View Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

14.0 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153

14.1 Alarms/Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

15.0 CALIBRATION AND REGULATION AFTER STARTUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160

15.1 Thermostatic Expansion Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

15.1.1 Determine Suction Superheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

15.1.2 Adjust Superheat Setting with the TEV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

15.2 Environmental Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

15.3 Calibrating Electrical Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

16.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161

16.1 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

16.2 Facility Fluid and Piping Maintenance for Water and Glycol Systems . . . . . . . . . . . . . . . 162

16.3 Glycol Solution Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

16.4 Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

16.5 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

16.6 Inspect and Replace the Air Filters—600mm (24") Models . . . . . . . . . . . . . . . . . . . . . . . . . 164

16.7 Inspect and Replace the Air Filters—300mm (12") Models . . . . . . . . . . . . . . . . . . . . . . . . . 166

16.8 Condensate Drain and Condensate Pump Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

16.8.1 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

16.8.2 Condensate Pump, Dual-Float. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

16.9 Air-Cooled Condenser and Drycoolers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

16.10 Electrical Heaters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

16.11 Replace a Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

16.11.1 Fan Replacement on 600mm (24") Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

16.12 Considerations when Dismantling the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

16.13 F-Gas Regulation (EC) No. 842/2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

17.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

APPENDIX A-HUMIDIFIER—600MM (24") UNITS ONLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175

A.1 Principal of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

A.1.1 Humidifier Water Supply and PlumbingHumidifier Water Supply and Plumbing . . . . . . . 176

A.1.2 Humidifier Water ConnectionHumidifier Water Connection . . . . . . . . . . . . . . . . . . . . . . . . 176

A.1.3 Humidifier Startup and OperationHumidifier Startup and Operation . . . . . . . . . . . . . . . . 177

A.1.4 Low Water ConductivityLow Water Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

A.1.5 Cylinder ReplacementCylinder Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

A.1.6 Humidifier TroubleshootingHumidifier Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

APPENDIX B-REMOTE RACK SENSOR TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

B.1 Starting Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

FIGURES

Figure 1 Component location, common components—600mm (24") models. . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2 Component location—Liebert 300mm (12") CR019 DX units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3 Overall dimensions, service area—600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4 Overall dimensions, service area—300mm (12") DX models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5 Liebert CRV, front and rear views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6 Liebert CRV center of gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 7 Recommended unit handling equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 8 Moving the unit using rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 9 Unpacking the Liebert CRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 10 Removing the 600mm (24") unit from the skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 11 Removing the Liebert CRV 300mm (12") DX unit from the skid . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 12 Adjust leveling feet—600mm (24in.) and 300mm (12in.) units . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 13 General arrangement, Liebert MC condenser—air-cooled 600mm (24") units with and

without Liebert Lee-Temp condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 14 General arrangement, fin/tube condenser—air-cooled 600mm (24") units with and without

Liebert Lee-Temp condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 15 General arrangement, Liebert MC condenser with and without Liebert

Lee-Temp—air-cooled 300mm (12") units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 16 General arrangement—water-glycol units, 600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 17 General arrangement—chilled water, 600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 18 Condensate pumps—600mm (24") and 300mm (12") DX units . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 19 Gravity drain piping—600mm (24") and 300mm (12") units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 20 Gravity drain connection, 300mm (12") DX units without condensate pump . . . . . . . . . . . . . . . . 28

Figure 21 Connections for vacuum creation and refrigerant charge—600mm (24") models . . . . . . . . . . . . . 32

Figure 22 Connections for vacuum creation and refrigerant charge—300mm (12") DX models. . . . . . . . . . 32

Figure 23 Top refrigerant piping connections—600mm (24") models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 24 Bottom refrigerant piping connections—600mm (24") models. . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 25 Top refrigerant piping connections—300mm (12") DX models . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 26 Piping line cooling unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 27 Connection locations—air-cooled 600mm (24") models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 28 Connections—air-cooled 300mm (12") models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 29 Water connection points, bottom entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 30 Recommended drycooler installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 31 Connections—water/glycol models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Figure 32 Chilled water connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Figure 33 Chilled water circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 34 Connections—chilled water models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Figure 35 Electrical field connections—600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Figure 36 CANbus communication connection Liebert CRV and Liebert MC (premium) unit. . . . . . . . . . . 60

Figure 37 Electrical field connections—300mm (12") DX models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Figure 38 Low-voltage field wiring routing into the unit—300mm (12") DX . . . . . . . . . . . . . . . . . . . . . . . . . 63

Figure 39 Serial tag location——600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Figure 40 Remove electrical panel and lower front panel—600mm (24") models . . . . . . . . . . . . . . . . . . . . . 65

Figure 41 Pull out the electric panel—300mm (12") DX models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Figure 42 Power and control cable entry points and routing—600mm (24") models. . . . . . . . . . . . . . . . . . . 67

Figure 43 Power cable routing—Bottom entry, 300mm (12") DX models. . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Figure 44 Liebert IntelliSlot cable routing—Top entry, 300mm (12") DX models . . . . . . . . . . . . . . . . . . . . . 69

Figure 45 Liebert IntelliSlot cable routing—Bottom entry, 300mm (12") DX models . . . . . . . . . . . . . . . . . . 70

Figure 46 Electrical heating with temperature sensor protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Figure 47 Refrigerant line components—600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Figure 48 Refrigerant line components—300mm (12") DX models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Figure 49 Position of the chilled water valve actuator (for 2- or 3-way valve)—600mm (24") units. . . . . . . 76

Figure 50 Adjust the baffles to ensure correct airflow direction—600mm (24") models . . . . . . . . . . . . . . . . 77

Figure 51 Adjust the baffles to ensure correct airflow direction—300mm (24") models . . . . . . . . . . . . . . . . 78

Figure 52 Adjust air-blocking plate—600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Figure 53 Liebert iCOM

default screen symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Figure 54 User menu icons and descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Figure 55 Service menu icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Figure 56 System View screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Figure 57 Unit View screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Figure 58 Main screens, User, Service and Advanced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Figure 59 Screen transition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Figure 60 Menu tree—Stand-alone units or units not in a network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Figure 61 Liebert CRV system screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Figure 62 Menu tree—Liebert CRV’s in a network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Figure 63 Display user menu - Display setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Figure 64 Liebert iCOM menu components for Liebert CRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Figure 65 Liebert iCOM

menu components for Liebert CRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Figure 66 Service Menu - Setpoint screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Figure 67 Service Menu Setpoint screen for Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Figure 68 Service Menu Setpoint screen for Fan Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Figure 69 Service Menu Setpoint screen for Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Figure 70 Service menu setpoint screen for humidification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Figure 71 User Menus-Setpoints parameters screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Figure 72 User menus—Spare Parts screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Figure 73 User menus-Event log screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Figure 74 User menus-Network screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Figure 75 User menus-Sensor data parameters screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Figure 76 User menus—Sensor data parameters screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Figure 77 User menus—Display setup parameters screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Figure 78 User menus—Total run hours parameters screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Figure 79 User menus—Condenser timer screen-page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Figure 80 User menus—Condenser timer screen-page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Figure 81 Service menus—Setpoints parameters screen - Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Figure 82 Service menus—Setpoints parameters screen - Page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Figure 83 Service menus—Setpoints parameters screen - Page 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Figure 84 Service menus—Setpoints parameters screen - Page 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Figure 85 Service menus—Standby settings / lead-lag parameters screen . . . . . . . . . . . . . . . . . . . . . . . . . 109

Figure 86 Service menus—Wellness basic settings screen - Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Figure 87 Service menus—Wellness motor settings parameters screen - Page 2 . . . . . . . . . . . . . . . . . . . . 112

Figure 88 Service menus—Wellness compressor 1 settings parameters screen - Page 3 . . . . . . . . . . . . . . 112

Figure 89 Service menus—Wellness electric heater 1 settings parameters screen - Page 4. . . . . . . . . . . . 113

Figure 90 Service menus—Wellness humidifier settings parameters screen - Page 5 . . . . . . . . . . . . . . . . 113

Figure 91 Service menus—Diagnostics / service mode parameters screen - Page 1 . . . . . . . . . . . . . . . . . . 114

Figure 92 Service menus—Diagnostics / service mode parameters screen - Page 2 . . . . . . . . . . . . . . . . . . 114

Figure 93 Service menus—Diagnostics / service mode parameters screen - Page 3 . . . . . . . . . . . . . . . . . . 115

Figure 94 Service menus—Diagnostics / Service mode parameters - Page 4 CW models. . . . . . . . . . . . . . 116

Figure 95 Service menus—Diagnostics / Service mode parameters - Page 4 DX models. . . . . . . . . . . . . . 116

Figure 96 Service menus—Diagnostics / service mode parameters screen - Page 5 . . . . . . . . . . . . . . . . . . 117

Figure 97 Service menus—Diagnostics / service mode parameters screen - Page 6 . . . . . . . . . . . . . . . . . . 117

Figure 98 Service menus Figure 85 Diagnostics / service mode parameters screen - Page 7 . . . . . . . . . . . 118

Figure 99 Service menus—Set alarms parameters screen - Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Figure 100 Service menus—Set alarms parameters screen - Page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Figure 101 Service menus—Set alarms parameters screen - Page 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Figure 102 Service menus—Set alarms parameters screen - Page 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Figure 103 Service menus—Set alarms parameters screen - Page 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Figure 104 Service menusFigure 89 Sensor calibration / setup parameters - Page 1 . . . . . . . . . . . . . . . . . . 120

Figure 105 Service menus—Sensor calibration / setup parameters — Page 2. . . . . . . . . . . . . . . . . . . . . . . . 121

Figure 106 Service menus—Sensor calibration / setup parameters - Page 3 . . . . . . . . . . . . . . . . . . . . . . . . . 121

Figure 107 Service menus—Sensor calibration / setup parameters - Page 4 . . . . . . . . . . . . . . . . . . . . . . . . . 122

Figure 108 Service menus—System / network setup parameters-System - Page 1 for the Display . . . . . . . 122

Figure 109 Service menus—System / network setup parameters-Large display only System - Page 2

for the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Figure 110 Service menus—System/Network setup parameters Unit- Page 1 for the Board . . . . . . . . . . . . 124

Figure 111 Service menus—System/Network setup parameters Unit - Page 2 for the Board . . . . . . . . . . . 125

Figure 112 Service menus—Options setup parameters - Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Figure 113 Service menus—Options setup parameters - Page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Figure 114 Service menus—Options setup parameters - Page 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Figure 115 Service—Service Contact Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Figure 116 Service menus—Remote Sensor Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Figure 117 U2U Network Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Figure 118 U2U network diagram-600mm (24in. ) Liebert CRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Figure 119 U2U network diagram-300mm (12in. ) Liebert CRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Figure 120 Teamwork modes and sensor management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Figure 121 Teamwork Mode 1 with three cooling units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Figure 122 2T rack sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Figure 123 DIP switches in 2T sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Figure 124 Setting DIP switches for 2T sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Figure 125 Termination with factory-supplied plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Figure 126 Termination jumper setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Figure 127 Removing the remote temperature/humidity sensor cover and setting DIP switches . . . . . . . . 144

Figure 128 CANbus wire Cable with Grounding Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Figure 129 Route the CANbus wire into the cooling unit-600mm (24") . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Figure 130 Top entry route the CANbus wire into the cooling unit-300mm (12") DX. . . . . . . . . . . . . . . . . . 149

Figure 131 2T rack sensors installed on neighboring racks-600mm (24") models . . . . . . . . . . . . . . . . . . . . . 150

Figure 132 2T rack sensors installed on neighboring racks-300mm (12") models . . . . . . . . . . . . . . . . . . . . . 151

Figure 133 Remote Sensor Setup, page 1 of 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

vii

Figure 134 Temperature and humidity sensor terminal, viewed from the rear of the unit-600mm

(24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Figure 135 Temperature and humidity sensor and filter clog sensor viewed from front of unit-300mm

(12") DX models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Figure 136 Air filter location and input power safety switch—600mm (24") models . . . . . . . . . . . . . . . . . . 164

Figure 137 Remove the air filters—600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Figure 138 Differential pressure switch tubes—600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Figure 139 Remove the air filters 300mm (12") models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Figure 140 Differential pressure switch components, 300mm (12") DX models . . . . . . . . . . . . . . . . . . . . . . 167

Figure 141 Condensate pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Figure 142 Liebert CRV fan assembly components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Figure 143 General diagram—humidifier operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Figure 144 Water connection to humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Figure 145 Sensor pins, cylinder plugs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Figure 146 CANbus and Ethernet cable wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

TABLES

Table 1 Dry weight, all model types, ± 5% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 2 Overall dimensions, service area—300mm (12") models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 3 Center of gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 4 Weights without packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 5 Shipping weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 6 Traditional open room 95°F (35°C)/23RH return air conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 7 Traditional open room 95°F (35°C)/23RH return air conditions Liebert QuietLine

™

sound levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 8 Traditional open room 95°F (35°C)/23RH return air conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 9 Condenser positioning—Liebert MC and fin/tube condenser with or without Liebert

Lee-Temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table 10 Liebert CRV position relative to the remote condenser—Liebert MC and fin/tube

condenser with or without Liebert Lee-Temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table 11 Recommended refrigerant line sizes, Cu, OD, for Liebert MC and VFD control fin/tube

condensers with R-410A with and without Liebert Lee-Temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 12 Liebert MC Condenser piping sizes for 600mm (24in.) and 300mm (12in.) units. . . . . . . . . . . . . 37

Table 13 Condenser piping connection sizes—single-circuit condensers with Liebert Lee-Temp

for 600mm (24in.) and 300mm (12in.) units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 14 Piping and refrigerant sizes for Liebert Lee-Temp

™

fin/tube condensers with R-410A. . . . . . . . 37

Table 15 Piping and refrigerant sizes for Liebert air-cooled, VFD control condensers with

R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 16 Unit connection sizes, air-cooled models—600mm (24") models . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Table 17 Key to unit connections in Figure 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Table 18 Indoor unit charge R-410A refrigerant and oil charge for air-cooled models . . . . . . . . . . . . . . . . 42

Table 19 Interconnecting piping refrigerant charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 20 Refrigerant required, R-410A, approximate for Liebert MC Condensers, with and

without Liebert Lee-Temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 21 Fin/tube condensers air-cooled condenser refrigerant charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 22 Refrigerant and oil charge for water-cooled models—600mm (24"). . . . . . . . . . . . . . . . . . . . . . . . 43

Table 23 Target subcooling for ambient outdoor temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 24 Difference in subcooling measurements—Indoor minus outdoor. . . . . . . . . . . . . . . . . . . . . . . . . . 46

Table 25 Liquid pressure and temperature chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Table 26 Water connection options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 27 Volume of CRV internal water circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 28 Glycol mixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

viii

Table 29 Unit connections, water/glycol-cooled models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Table 30 Unit connections, chilled water models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table 31 Keyboard icons and functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Table 32 Service menu icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Table 33 Controlling sensor settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Table 34 Service contact info parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Table 35 Teamwork Mode 1 or 3, definition of Serial, Parallel and Local . . . . . . . . . . . . . . . . . . . . . . . . . 139

Table 36 DIP switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Table 37 Liebert CRV™ - Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Table 38 Calibrating electrical components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Table 39 Maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Table 40 Unit diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Table 41 Liebert iCOM

medium control board DIPswitch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Table 42 Humidifier troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Important Safety Instructions

1Liebert

CRV

™

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important safety instructions that should be followed during the installation

and maintenance of the Liebert CRV. Read this manual thoroughly before attempting to carry out

any operations on the Liebert CRV, including installation and operation. Retain this manual for the

entire service life of the Liebert CRV.

Only properly trained and qualified personnel should move, install or service this equipment.

Adhere to all warnings, cautions and installation, operating and safety instructions on the unit and in

this manual. Follow all operating and user instructions.

Any operation that requires opening doors or equipment panels must be carried out only by properly

trained and qualified personnel.

Each machine is equipped with an electric insulation device that allows the operator to work safely.

Switch Off the machine with this electric insulation device before beginning any maintenance

operation to eliminate remaining risks (electric shocks, burns, automatic restarting, moving parts

and remote control).

To identify the unit by model and serial number in order to obtain assistance or spare parts, locate

the identification label on the outside of the unit.

A warning label on the front and back panels reminds users that:

• the Liebert CRV restarts automatically

• the main switch must be opened before opening the internal compartments for any operation.

WARNING

Arc flash and electric shock hazard. Can cause injury and death.

Open all local and remote electric power supplies, verify with a voltmeter that power is Off

and wear appropriate personal protective equipment per NFPA 70E before working within

the electric control enclosures.

Before proceeding with installation, read all instructions, verify that all the parts are included

and check the nameplate to be sure the voltage matches available utility power.

The Liebert iCOM

microprocessor does not isolate power from the unit, even in the Unit Off

mode.

Some internal components require and receive power even during the Unit Off mode of the

Liebert iCOM control.

The factory-supplied optional disconnect switch is inside the unit. The line side of this switch

contains live hazardous voltage potential.

Install and open a remote disconnect switch and verify with a voltmeter that live hazardous

voltage potential is not present inside the unit cabinet before working within. Refer to the

unit electrical schematic.

Follow all national and local codes.

Important Safety Instructions

Liebert

CRV

™

NOTICE

Risk of overhead interference. Can cause unit and/or building damage.

The unit may be too tall to fit through a doorway while on the skid. Measure the unit and

doorway heights and refer to the installation plans prior to moving the unit to verify

clearances.

NOTICE

Risk of improper storage. Can cause unit damage.

Keep the unit upright, indoors and protected from dampness, freezing temperatures and

contact damage.

WARNING

Risk of high temperatures, extreme cold and high-speed rotating fan blades. Can cause

equipment damage, injury and death.

Disconnect all local and remote electrical power supplies, confirm that all fan blades have

stopped rotating and allow the component temperatures to become safe for human contact

before opening doors and/or removing protective covers and working within.

If the doors are opened immediately after the Liebert CRV has been switched Off:

• some components, such as electrical heaters, compressor, outlet area and outlet piping, may

remain at high temperature about 212°F (100°C);

• some components, such as the evaporator, may remain at low temperature;

• fan blades may continue to rotate by inertia.

These residual risks are highlighted by warning labels on the Liebert CRV.

WARNING

Risk of explosive discharge from high-pressure refrigerant. Can cause injury and death.

This unit contains fluids and gases under high pressure. Relieve pressure before working with

piping.

WARNING

Risk of hair, clothing and jewelry entanglement with high speed rotating fan blades. Can

cause equipment damage, serious injury or death.

Keep hair, jewelry and loose clothing secured and away from rotating fan blades during

operation.

WARNING

Risk of top-heavy unit falling over. Can cause equipment damage, injury and death.

Verify that all lifting equipment is rated for the weight of the unit. See Tables 4 and 5 for

unit weights.

Read all of the following instructions before attempting to move, lift or remove packaging

from the Liebert CRV.

CAUTION

Risk of sharp edges, splinters and exposed fasteners. Can cause injury.

Only properly trained and qualified personnel wearing appropriate safety headgear, gloves,

shoes and glasses should attempt to move, lift or remove packaging from the Liebert CRV or

prepare the unit for installation.

Important Safety Instructions

3Liebert

CRV

™

NOTICE

Risk of internal system corrosion and frozen coolant fluid. Can cause equipment damage and

major fluid leaks resulting in serious building damage, expensive repair costs and costly

system down time.

Cooling coils, heat exchangers and piping systems that are connected to open cooling towers

or other open water/glycol systems are at high risk of freezing and premature corrosion.

Fluids in these systems must contain the proper antifreeze and inhibitors to prevent freezing

and premature coil, piping and heat exchanger corrosion. The water or water/glycol solution

must be analyzed by a competent local water treatment specialist before startup to establish

the inhibitor and antifreeze solution requirement and at regularly scheduled intervals

throughout the life of the system to determine the pattern of inhibitor depletion.

The complexity of water/glycol solution condition problems and the variations of required

treatment programs make it extremely important to obtain the advice of a competent and

experienced water treatment specialist and follow a regularly scheduled coolant fluid system

maintenance program.

Read and follow individual unit installation instructions for precautions regarding fluid

system design, material selection and use of field-provided devices. Liebert systems contain

iron and copper alloys that require appropriate corrosion protection. It is important to have

the system running with flow through exchangers maintained at initial system fill for 24 to 48

hours depending on size and system configuration.

Water chemistry varies greatly by location, as do the required additives, called inhibitors,

that reduce the corrosive effect of the fluids on the piping systems and components. The

chemistry of the water used must be considered, because water from some sources may

contain corrosive elements that reduce the effectiveness of the inhibited formulation.

Sediment deposits prevent the formation of a protective oxide layer on the inside of the

coolant system components and piping. The water/coolant fluid must be treated and

circulating through the system continuously to prevent the buildup of sediment deposits and

or growth of sulfate reducing bacteria.

Proper inhibitor maintenance must be performed in order to prevent corrosion of the system.

Consult glycol manufacturer for testing and maintenance of inhibitors.

Commercial ethylene glycol (examples are Dow Chemical Dowtherm SR-1 Union Carbide

Ucartherm and Texaco E.G. Heat Transfer Fluid 100), when pure, is generally less corrosive

to the common metals of construction than water itself. It will, however, assume the

corrosivity of the water from which it is prepared and may become increasingly corrosive with

use if not properly inhibited.

NOTICE

Risk of no-flow condition. Can cause equipment damage.

Do not leave the unit in a no-flow condition. Idle fluid allows the collection of sediment that

prevents the formation of a protective oxide layer on the inside of tubes. Keep unit switched

on and system pump operating continuously.

NOTE

The Liebert indoor cooling unit has a factory-installed high pressure safety switch in the high

side refrigerant circuit. A pressure relief valve is provided with Liebert Lee-Temp

™

condensers.

Consult your local building code to determine if the Liebert VFD condensers will require

field-provided pressure-relief devices. A fusible plug kit for Liebert VFD condensers is available

for field installation.

Model Number Nomenclature - 25 Digit Configuration Number 1

Liebert

CRV

™

MODEL NUMBER NOMENCLATURE - 25 DIGIT CONFIGURATION NUMBER

Model # Part 1 Model Details Model # Part 2

12345678910111213141516171819202122232425

CR0 2 0 RA1 C 7 S D 1 8 1 1 E L 1 0 P A — — —

Digits 1-2 - Unit Family Digit 15 - Water/Glycol Valve Type

Liebert CRV = CR 1 = Two-Way Valve (W/G only) OR Default Air-Cooled Selection

Digits 3-5 - Nominal Capacity, kW 7 = Three-Way Valve (W/G only)

DX = 019 (300mm [12" wide]), 020, 035 (600mm [24"] wide),

2000mm [78.75in.] height)

H = Default CW Selection

CW = 040 (600mm [24in.] wide, 2000mm height) Digit 16 - Unit Color

Digit 6 - Row-Based, Unit Depth 1 = Standard Color (Z-7021 Black)

R = 1100mm (43.4in) 2 = Non-Standard Color

2 = 1200mm (47.25 in) (available on 300mm [12in.] chilled water

models only)

Digit 17 - High-Voltage Options

Digit 7 - System Type L = NO condensate pump (for units without humidifier), 5k SCCR CW

A = Air Cooled A = NO condensate pump (for units without humidifier)

W = Water/Glycol Cooled E = Dual-float condensate pump (for units with or without humidifier)

C = Chilled Water Cooled

5 = Dual-float condensate pump (for units with or without humidifier),

5k SCCR CW

Digit 8 - Fan Type

1 = Variable Speed EC fans

M = NO dual-float condensate pump (for units without humidifier),

65k SCCR, 600 series and CRV300 DX series

Digit 9 - Power Supply

A = 460V / 3ph / 60Hz

P = Dual-float condensate Pump (for units with or without humidifier),

65k SCCR, 600 series and CRV300 DX series

C = 208V / 3ph / 60Hz

P = 208/230V / 1ph / 60Hz (Control transformer can be tapped

to provide 240V / 1ph / 60Hz)

Digit 18 - Option Package (600 Series Only)

0 = None

Y = 208/230 3ph 60Hz

Digit 10 - Cooling System H = Reheat and Humidifier Lockout

600mm (24in.) wide series: C = Reheat and Humidifier Lockout Additional Alarm Contact

2 = Two-Way Valve (CW, 600mm [24in.] models only) D = Low Sound Package (DX units only)

3 = Three-Way Valve (CW, 600mm [24in.] models only)

L = Low Sound Package and Reheat and Humidifier Lockout and

Additional Alarm Contact (DX units only)

7 = R-410A digital scroll (DX only)

300mm (12in.) wide series

9 = Top and bottom CW connections; CRV600 only Digit 19 - Liebert IntelliSlot

Housing

Digit 11 - Humidifier 0 = No Cards

0 = None U = (1) Liebert IntelliSlot IS-UNITY-DP Card

S = Steam Generating Canister (600mm [24in.] models only) C = (1) Liebert SiteLink-E

Card

Digit 12 - Display Type

6 = (1) Liebert IntelliSlot IS-UNITY-DP Card and (1) Liebert

SiteLink-E

Card

D = Liebert iCOM

Control with Large Graphic Display

Digit 13 - Reheat 7= (2) Liebert IntelliSlot IS-UNITY-DP Cards

0 = None Digit 20 - Future Options

1 = Electric Reheat (600mm [24in.] models only) 0 = None

Digit 14 - Air Filter Digit 21 - Packaging

8 = 4" MERV 8 + Clogged Filter Alarm (600mm [24in.] models only P = Domestic

9 = 4" MERV 11 + Clogged Filter Alarm (600mm [24in.]

models) only

S = Export (Seaworthy)

Digit 22 - Special Features

C = 1/2" MERV 1 and Clog Filter Alarm (300mm [12in.]

models only)

A = No SFAs, Standard Unit

X = SFA Included

A = 2" MERV 8 (300mm [12in.] DX models only) Digits 23-25 - Factory Configuration Number

1. The 14-digit model number consists of the first 10 digits and last four digits of the configuration number.

2. CR019 data in this document refers only as DX units.

Liebert CRV Component Location

5Liebert

CRV

™

1.0 LIEBERT CRV COMPONENT LOCATION

Figure 1 Component location, common components—600mm (24") models

1 Top electrical entrance

2 Electric box

Top humidifier water supply,

condensate pump drain

4 Supply and Return Connections

5 EC plug fans

6 Electric heaters

7 Humidifier distributor

8 Condensate pump

9 Bottom electrical entrance

10 Bottom condensate pump drain

11 Evaporator / CW coil

12 Liebert iCOM

13 Serial tag (inside door)

FRONT

REAR

Liebert CRV Component Location

Liebert

CRV

™

Figure 2 Component location—Liebert 300mm (12") CR019 DX units

1 Top electrical entrance

2 Liebert iCOM

3 Evaporator Coil

4 Bottom Refrigerant Connections

Knockouts for bottom electrical

entrance

6 Compressor

7 Caster and leveling foot

8 Serial Tag

9 Electric box

10 Main disconnect switch

11 Baffles (five assemblies)

12 EC plug fans (five)

13 Top Refrigerant Connections

FRONT

REAR

FRONT

REAR

Liebert CRV Component Location

7Liebert

CRV

™

Figure 3 Overall dimensions, service area—600mm (24") models

Table 1 Dry weight, all model types, ± 5%

Model No.

Model Type

Air Cooled

lb (kg)

Water/Glycol

lb (kg)

Chilled Water

lb (kg)

CR020R 739 (335) 772 (350 —

CR035R 805 (365) 849 (385) —

CR040R — — 728 (330)

Source: DPN001791, Rev. 2

Access required to service the

Liebert CRV within the row.

Rear service area is S+B or S+A

when B is not available.

12"

(305mm)

Nominal

78-3/4"

(2000mm)

25-9/16"

(650mm)

25-9/16"

(650mm)

107-5/16"

(2725mm)

13-3/4"

(350mm)

46-1/4"

(1175mm)

21-5/8"

(550mm)

35-9/16"

(903mm)

3-5/16"

(100mm)

3-15/16"

(100mm)

27-9/16"

(700mm)

Air Filters

23-5/8"

(600mm)

23-5/8"

(600mm)

Install

49" (1245mm)

Hot Air

46-1/4" (1175mm)

3" (75mm)

Cold Air

REAR

REAR VIEW

FRONT

DPN001791

Rev. 3

TOP VIEW

Door

Fully

Open

Front or Rear

Clearance Required

Access required for installation of

the Liebert CRV within the row.

For proper airflow distribution:

Align the front door of neighboring

server racks with the front corner

of the Liebert CRV

Liebert CRV Component Location

Liebert

CRV

™

Figure 4 Overall dimensions, service area—300mm (12") DX models

Table 2 Overall dimensions, service area—300mm (12") models

Model

Height

in (mm)

Depth

in (mm)

Installation

Depth, in (mm)

Weight, ± 5%

lb (kg)

CR019R 78.7 (2,000) 43.3 (1,100) 49.2 (1,250) 507 (230)

Either Front

or Rear

Clearance

Required

Install

Depth

Install

Depth

Access Required to Install the Unit

Between Existing Racks Within the Row.

12"

(300mm)

12"

(300mm)

12"

(300mm)

12"

(300mm)

12"

(300mm)

12"

(300mm)

12"

(300mm)

Access Required to Service the Unit

Between Existing Racks Within the Row

Service area is S+A+B

36"

(915mm)

36"

(915mm)

79"

(2000mm)

COLD AIR

HOT AIR

TOP VIEW

REAR

FRONT

with Display

Depth

(see table)

FRONT

DPN002807

Rev. 1

ASB

BSA

Introduction

9Liebert

CRV

™

2.0 INTRODUCTION

2.1 Product Description

The Liebert CRV is a precision cooling unit available in compressorized (air-, water- or glycol-cooled)

and chilled water configurations to be installed within a row of high-density computing racks in a

“hot aisle-cold aisle” configuration.

Air enters the rear of the Liebert CRV from the hot aisle, is filtered, cooled and conditioned, then

discharged into the cold aisle. The Liebert CRV provides all the necessary functions of a standard

precision air conditioner, including cooling, heating, humidification, dehumidification, air filtration,

condensate management, temperature control, alarm monitoring and data communication. The

Liebert CRV is optimized for maximum cooling capacity in a minimal footprint.

Figure 5 Liebert CRV, front and rear views

RearFront RearFront

600mm (24 inch) DX and CW Models 300mm (12 inch) DX Models

Introduction

Liebert

CRV

™

2.1.1 SmartAisle

™

Configuration

The SmartAisle from Emerson Network Power

is an intelligent row-based system that integrates

data center racks, power, row cooling, aisle containment, monitoring and control technologies into a

complete data center layout.

The Liebert CRV is a SmartAisle technology, appropriate for use with the SmartAisle design

approach.

Typical SmartAisle Components

Each SmartAisle from Emerson is custom-designed, offering the most favorable layout for the

installation. The design takes into account the equipment required, equipment sizes (with the heat

load or power consumption), cooling equipment type (chilled water or water/glycol based) and whether

cooling or power redundancy is desired.

Some typical components are:

Depending on heat load and power requirements, there may be multiple Liebert cooling units and

multiple AC Power Protection and Distribution units.

Liebert APM

™

DCF

™

or DCM

™

Cabinets

Liebert Battery Cabinets Modular Containment

Liebert BDC

™

Liebert MB

™

Liebert CRV Liebert PDU’s

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Emerson Liebert CRV User manual

Brand: Emerson

Model: Liebert CRV

Category: Heat pumps

Type: User manual

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Emerson Liebert CRV User manual

Emerson Liebert CRV User manual

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