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Precision Cooling
For Business-Critical Continuity™
® ™
Liebert CRV
User Manual–60Hz, 24-Inch Wide, Air-Cooled, Water/Glycol-Cooled and Chilled Water
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MODEL NUMBER NOMENCLATURE - 25 DIGIT CONFIGURATION NUMBER Model # Part 1 * Model Details Model # Part 2 * 12 345 678 910 111213 141516 171819 202122 23 24 25 CR 0 2 0 RA 1 C 7 S D 1 8 1 1 E L 1 0 P A * * * Digits 1-2 - Unit Family Digit 17 - High-Voltage Options ® ™ Liebert CRV = CR L or A = NO dual-float condensate pump (for units without humidifier), 5kA SCCR** Digits 3-5 - Nominal Capacity, kW DX = 020, 035 5 or E = Dual-float condensate pump (for units with or without humidifier), 5kA SCCR
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TABLE OF CONTENTS 1.0 LIEBERT CRV COMPONENT LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 2.1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.0 INSPECTION AND UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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9.5 Remote Rack Sensor Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 9.5.1 DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 9.5.2 Set 2T Rack Sensor Identities—DIP Switch settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 9.5.3 Terminating the Last 2T Sensor on a Network . . . . . . . . . . . . . . . . . . . . . . . . .
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14.3 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 14.4 Inspect and Replace the Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 14.5 Condensate Drain and Condensate Pump Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 14.5.1 Condensate drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Figure 20 Chilled water connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 21 Chilled water circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 22 Air bleeding valve position CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Figure 23 Connections—water/glycol models.
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Figure 70 Diagnostics / service mode parameters screen - Page 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Figure 71 Diagnostics / service mode parameters screen - Page 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Figure 72 Diagnostics / service mode parameters screen - Page 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Figure 73 Set alarms parameters screen - Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . .
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TABLES Table 1 Dry weight, all model types, ± 5% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 2 Center of gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 3 Weights without packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 4 Shipping weights. . . . . . . . .
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Important Safety Instructions 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 t
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Important Safety Instructions WARNING ! Arc flash and electric shock hazard. Can cause injury and death. Disconnect local and remote power supplies and wear appropriate personal protective equipment per NFPA 70E before working within. 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
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Important Safety Instructions NOTICE Risk of water leakage. Can cause severe property damage and loss of critical data center equipment. This unit requires a water drain connection. It may require an external water supply to operate the humidifier. Improper installation, application and service practices can result in water leakage from the unit. Do not locate the Liebert CRV directly above any equipment that could sustain water damage. Emerson recommends installing monitored leak detection
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Liebert CRV Component Location 1.0 LIEBERT CRV COMPONENT LOCATION Figure 1 Component location, common components—All models 7 2 13 ® 1 Liebert iCOM control display 2 Electric box 11 9 3 Evaporator / CW coil 4 Condensate pump 1 5 Electric heaters 6 Humidifier distributor 14 Top humidifier water supply, 7 condensate pump drain 8 Drain trays, two places 8 5 9 EC plug fans 6 3 8 10 Bottom electrical entrance 12 11 Serial tag inside door 12 Bottom condensate pump drain 10 Rear 13 Top electrical ent
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Liebert CRV Component Location Figure 3 Component location - Liebert CR035RW, CR020RW water/glycol-cooled units 1 1 Top water/glycol connections 2 Compressor 3 Brazed plate condenser 4 Bottom water/glycol connections 7 5 Water/glycol valve 6 Refrigerant receiver 7Air filters 6 8 Vibasorber 9 Thermostatic expansion valve 3 10 Sight glass 5 11 Filter dryer 12 Humidity/temperature sensor 2 13 Bottom humidifier water supply 4 Figure 4 Component location - Liebert CR040RC chilled water units 1 2 1 To
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Liebert CRV Component Location Figure 5 Overall dimensions / service area 25-9/16" 35-9/16" (650mm) (903mm) 13-3/4" A (350mm) 78-3/4" (2000mm) 25-9/16" Rear B S (650mm) 3-15/16" Front (100mm) Door Fully Open 107-5/16" 12" (2725mm) (305mm) 46-1/4" 46-1/4" (1175mm) 3" (1175mm) Top 23-5/8" (75mm) (600mm) 21-5/8" S (550mm) 23-5/8" 3-15/16" (100mm) (600mm) 27-9/16" (700mm) Air Access Required to Remove / Install Filters Entire Unit Within The Row Hot Air Rear 49" (1245mm) Cold Air DPN1791 49" Only fr
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Introduction 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 p
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Inspection and Unpacking 3.0 INSPECTION AND UNPACKING WARNING ! Risk of top-heavy unit falling over. Can cause equipment damage, personal injury and death. 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 personal injury. Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and glasses should attempt to move, lift
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Inspection and Unpacking • Always keep the packaged Liebert CRV upright and never leave it outdoors. • Be aware of the center of gravity indicated on the package and in Table 2 below: Table 2 Center of gravity Distance from lower right front corner, ± 2 in. (51m) Model no. X, in. (mm) Y, in. (mm) Z, in. (mm) CR020 20 (508) 12 (305) 28 (711) CR035 20 (508) 12 (305) 32 (813) CR040 21 (533) 12 (305) 32 (813) The center of gravity on the Liebert CRV varies with the options and the model's size. Tabl
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Inspection and Unpacking 3.3 Moving the Unit Using Rigging CAUTION ! Risk of sharp edges, splinters and exposed fasteners. Can cause personal 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. 1. Use a pallet jack or forklift to raise the packaged unit. 2. Place slings under the skid runners, equally spacing the slings to
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Inspection and Unpacking Figure 10 Unpacking the Liebert CRV 197023 Rev. 4 3.5 Removing the Unit from the Skid WARNING ! Risk of top-heavy unit falling over. Can cause equipment damage, personal injury and death. 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 personal injury. Only properly trained and qualified personnel wearing appropriate safety headgear,
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Inspection and Unpacking Figure 11 Removing the unit from the skid Step 5 Step 8 Step 1 4 Bolts on Each Side Secure the Tie-Down Bracket to the Skid M17 Socket M13 Socket Step 8 Step 15 197023 Rev. 4 3.6 Reattach the Baffle Panel Once the Liebert CRV has been moved to where it will be installed, the baffle panel can be reattached. ® 1. Open top panel door (the one with the Liebert iCOM ). 2. Reattach the bottom baffle panel assembly with screws, using a T30 Torx drive. 3. Close and latch top pan
