Vertiv Liebert CRV Installer/User Manual
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Vertiv Liebert CRV Installer/User Manual

Row based cooling system
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Liebert® CRV Row
Based Cooling System
Installer/User Guide
600 mm and 300 mm Wide

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  • Page 1 Liebert® CRV Row Based Cooling System Installer/User Guide 600 mm and 300 mm Wide...
  • Page 2 The products covered by this instruction manual are manufactured and/or sold by Vertiv. This document is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any copying, use, or disclosure of it without the written permission of Vertiv is strictly prohibited.

  • Page 3: Table Of Contents

    6.3.3 Refrigerant Line Sizes and Equivalent Lengths 6.3.4 Refrigerant Charge Requirements for Air Cooled Systems 6.3.5 Additional Oil Requirements for Digital Scroll Compressors 6.3.6 Evacuation, Leak Testing, and Charging Air Cooled Systems without Receivers Vertiv™ | Liebert® CRV Installer/User Guide |...
  • Page 4 9.4 Adjust Baffles to Direct Air Properly 9.4.1 Adjusting Baffles—600 mm (24 in.) 9.4.2 Adjusting Blocker Plate—600 mm (12 in.) 9.4.3 Adjusting Baffles—300 mm (12 in.) 10 Troubleshooting 11 Maintenance 11.1 Safety Instructions 11.2 Facility Fluid and Piping Maintenance for Water and Glycol Systems Vertiv™ | Liebert® CRV Installer/User Guide |...
  • Page 5 11.14 Considerations when Dismantling the Unit 11.15 F-Gas Regulation (EC) No. 842/2006 12 Preventive Maintenance Worksheet Appendices Appendix A: Technical Support and Contacts Appendix B: Model Number Nomenclature Detail Appendix C: Submittal Drawings Vertiv™ | Liebert® CRV Installer/User Guide |...
  • Page 6 Vertiv™ | Liebert® CRV Installer/User Guide |...

  • Page 7: Important Safety Instructions

    Vertiv Liebert® CRV Installer/User Guide 1 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 install or operate this unit.
  • Page 8 Vertiv Liebert® CRV Installer/User Guide WARNING! Risk of contact with high speed rotating fan blades. Can cause serious injury or death. Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet or on the fan assembly. Fan motor controls can maintain an electric charge for 10 minutes after power is disconnected.
  • Page 9 Vertiv Liebert® CRV Installer/User Guide CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause injury. Only properly trained and qualified personnel wearing appropriate, OSHA-approved PPE should attempt to move, lift, remove packaging from or prepare the unit for installation.
  • Page 10 Vertiv Liebert® CRV Installer/User Guide NOTICE Risk of improper refrigerant charging. Can cause equipment damage. Refrigerant charge must be weighed into air-cooled compressorized systems before they are started. Starting scroll and digital scroll compressors without proper refrigerant charging can cause the compressors to operate at less than 5°F (–15°C) evaporator temperature and at less than 20 psig (138 kPa).
  • Page 11 Vertiv Liebert® CRV Installer/User Guide Commercial ethylene glycol, 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.
  • Page 12 Vertiv Liebert® CRV Installer/User Guide NOTICE Risk of doorway/hallway interference. Can cause unit and/or structure damage. The unit may be too large to fit through a doorway or hallway while on the skid. Measure the unit and passageway dimensions, and refer to the installation plans prior to moving the unit to verify clearances.

  • Page 13: Nomenclature And Components

    Vertiv Liebert® CRV Installer/User Guide 2 Nomenclature and Components This section describes the model number for Liebert® CRV units and components. 2.1 Model Number Nomenclature The tables describe the 25 digit configuration number. The 14 digit model number consists of the first 10 digits and last 4 digits of the configuration number.

  • Page 14: Cooling Configurations And Liebert® Crv Overview

    Vertiv Liebert® CRV Installer/User Guide 2.3 Cooling Configurations and Liebert® CRV Overview 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.

  • Page 15: Pre-Installation Preparation And Guidelines

    Allow at least the minimum recommended clearances for maintenance and service. See the appropriate submittal drawings for dimensions. • We recommend installing an under floor leak detection system. Contact your Vertiv representative for information. 3.1 Planning Dimensions The unit, floor stand, and plenum dimensions are described in the submittal documents included in the Submittal Drawings on page 131 .
  • Page 16 Vertiv Liebert® CRV Installer/User Guide This page intentionally left blank 3 Pre-installation Preparation and Guidelines...

  • Page 17: Equipment Inspection And Handling

    • Carefully inspect all items for visible or concealed damage. • Report damage immediately to the carrier and file a damage claim with a copy sent to Vertiv or to your sales representative. • For initial access, use a 7/32 in. Allen wrench for panel removal.

  • Page 18: Packaging Material

    Vertiv Liebert® CRV Installer/User Guide 4.1 Packaging Material All material used to package this unit is recyclable. Please save for future use or dispose of the material appropriately. 4.2 Handling the Unit while Packaged Transport the unit with a forklift or pallet jack.

  • Page 19: Unpacking The Domestic Shipped 600 Mm (24 In.) Unit

    Vertiv Liebert® CRV Installer/User Guide Figure 4.1 Metal Clips and Wood Screws on Crate Item Description Metal clips, typical 12 places Wood screws, minimum 34 places 4.4 Unpacking the Domestic Shipped 600 mm (24 in.) Unit Use a 9/16 in. socket drive or wrench to remove the lag screws (4 places typical) that secure the ramp to the pallet, see Figure 4.2 on the next page .

  • Page 20: Removing 600 Mm (24 In.) Units From The Pallet

    Vertiv Liebert® CRV Installer/User Guide Figure 4.2 Lag Screws that Secure Ramps 4.5 Removing 600 mm (24 in.) Units from the Pallet Remove front panel, see Figure 4.3 on the facing page • Open the top panel door (with controller display).
  • Page 21 Vertiv Liebert® CRV Installer/User Guide Figure 4.3 Preparing to Attach Ramps Item Description Leveling feet touching pallet, front view 13 mm hex head screw, 3 each side 9/16-in. hex head screw, 4 each side Leveling feet raise unit off shipping blocks, front view 6.

  • Page 22: Unpacking The Export Shipped 300 Mm (24 In.) Unit

    Vertiv Liebert® CRV Installer/User Guide Figure 4.4 Ramps Attached and Leveling Feet Raised Item Description Leveling feet fully raised. Casters ready to roll. 4.6 Unpacking the Export Shipped 300 mm (24 in.) Unit Remove the metal clips (12 places typical) that secure the top panel of the crate to the side panels, see Figure 4.5 on the facing page .

  • Page 23: Unpacking The Domestic Shipped 300 Mm (12 In.) Unit

    Vertiv Liebert® CRV Installer/User Guide Figure 4.5 Metal Clips and Wood Screws on Crate 4.7 Unpacking the Domestic Shipped 300 mm (12 in.) Unit Use a 9/16 in. socket drive or wrench to remove the lag screws (4 places typical) that secure the ramp to the pallet, see Figure 4.6 on the next page .

  • Page 24: Removing 300 Mm (12 In.) Units From The Pallet

    Vertiv Liebert® CRV Installer/User Guide Figure 4.6 Lag Screws that Secure Ramps 4.8 Removing 300 mm (12 in.) Units from the Pallet Locate the ramps and attach to the pallet using the hook and loop strips, see Figure 4.7 on the facing page , for placement of the strips.
  • Page 25 Vertiv Liebert® CRV Installer/User Guide Figure 4.7 Attach Ramps and Remove Shipping Brackets Item Description 13 mm hex-head screw, 3 each side 9-16 in. hex-head screw, 3 each side 4 Equipment Inspection and Handling...
  • Page 26 Vertiv Liebert® CRV Installer/User Guide This page intentionally left blank 4 Equipment Inspection and Handling...

  • Page 27: Installing In Enclosure Row

    Once positioned, secure the unit to the floor or to an adjacent cabinet. Adjustable brackets for attaching the unit to an adjacent cabinet are included with each unit. A bracket to attach the unit to the floor is available from your Vertiv representative. 5.1 Adjusting Base Supports/Leveling Feet After the unit is in its final installation position, open the display door and remove the lower front baffle panel using a 10 mm nut driver or T30 Torx Bit to prepare for installation.
  • Page 28 Vertiv Liebert® CRV Installer/User Guide Figure 5.1 Caster Locations Item Description Rear of 300 mm (12 in.) unit, bottom view Rear of 600 mm (24 in.) unit, bottom view Caster, 1 at each corner Stabilizer (optional), 1 at each corner.

  • Page 29: Optional Tie Down Brackets For 300 Mm (12 In.) Units

    Vertiv Liebert® CRV Installer/User Guide Figure 5.2 Adjust Leveling Feet Item Description 600 mm (24 in.) unit 300 mm (12 in.) unit Nut on top of foot. Adjust foot with wrench Adjust foot with wrench Jam nut, secures foot and final height Nut to raise/lower foot.

  • Page 30: Tools Required

    Vertiv Liebert® CRV Installer/User Guide 5.2.2 Tools Required • Screwdriver, Phillips #2 Bit • Drill • Drill bit: 1/8” diameter • 10 mm wrench or adjustable wrench 5.2.3 Installing Tie Down Brackets on 300 mm (12 in.) and on Cabinets of Different Heights To install the tie down bracket: Insert the M6 bolt through the longest slot in the two-piece tie-down bracket as shown in Figure 5.3 on the...
  • Page 31 Vertiv Liebert® CRV Installer/User Guide Figure 5.3 Tie Down Bracket on Cabinets of Different Heights—300 mm (12 in.) Item Description Top of adjacent cabinet Rear of unit Top of unit Screw holes for tie-down brackets Front of unit Screws in drilled holes.

  • Page 32: Installing Tie Down Brackets On 300 Mm (12 In.) And On Cabinets Of The Same Height

    Vertiv Liebert® CRV Installer/User Guide 5.2.4 Installing Tie Down Brackets on 300 mm (12 in.) and on Cabinets of the Same Height To install the tie down bracket: Position the tie-down bracket over the factory fabricated holes on the top of the Liebert® CRV and over the top of the adjacent cabinet of the same height as shown in Figure 5.4 below .

  • Page 33: Piping And Refrigerant Requirements

    Vertiv Liebert® CRV Installer/User Guide 6 Piping and Refrigerant Requirements The chilled water and water/glycol piping use threaded connections. The air cooled unit and internal refrigeration connections are sweat copper. The humidifier and condensate supply are threaded connections. Factory installed piping brackets must not be removed.

  • Page 34: Drain And Humidifier Fluid Piping

    The fill valve is sized for an extended water pressure range of 30 to 80 psi. For installations where water pressure is less than 15 psi, add a pressure-boost pump and notify your Vertiv representative. A fill valve with an oversized opening will be supplied.

  • Page 35: Condensate Pump Drain Line Requirements

    Vertiv Liebert® CRV Installer/User Guide 6.1.2 Condensate Pump Drain Line Requirements NOTICE Risk of water backing up in the drain line. Leaking and overflowing water can cause equipment and building damage. Do not install an external trap in the drain line. This line already has a factory installed trap inside the cabinet (except for 300 mm (12 in.)) Chilled water models).

  • Page 36: Condensate Pump Drain Piping For 300 Mm (12 In.) Models

    Vertiv Liebert® CRV Installer/User Guide Figure 6.1 Water Connection Points, Bottom Entry, 600 mm (24 in.) Models Item Description Condensate pump drain Humidifier water supply 6.1.3 Condensate Pump Drain Piping for 300 mm (12 in.) Models • Condensate pump is rated for approximately 4.6 GPH at 17 feet (0.28l/m at 5.18 m) total head. Maximum coil condensate design flow rate is 4.6 GPH.
  • Page 37 Vertiv Liebert® CRV Installer/User Guide Connecting Discharge Hose on Air Cooled, 300 mm (12 in.) Models The unit has a 3/8 in. ID x 5/8 in. OD vinyl hose on the condensate discharge with a factory installed 3/8-in hose barb. Refer to Figure 6.3 on the next page for the condensate pump components.
  • Page 38 Vertiv Liebert® CRV Installer/User Guide Figure 6.3 Condensate Pump Drain Piping, Air Cooled, 300 mm (12 in.) Item Description Bushing for bottom condensate exit (field installed in drain line knockout hole) Hose barb (field installed) Drain line knockout Connecting Discharge Hose on Water/Glycol Cooled, 300 mm (12 in.) Models The 300 mm (12 in.) water/glycol cooled units have separate models for top and bottom fluid connections.
  • Page 39 Vertiv Liebert® CRV Installer/User Guide 4. Remove the drain line from the evaporator coil and pump discharge line. 5. Remove the condensate pump. 6. Remove the wire ties that secure the wire harness inside the corner post to get slack in the wires.
  • Page 40 Vertiv Liebert® CRV Installer/User Guide Connecting Discharge Hose on Chilled Water, 300 mm (12 in.) Models The unit has a 3/8 in. ID x 5/8 in. OD vinyl hose on the condensate discharge with a factory installed 3/8 in hose barb. Refer to the figure for the condensate pump components.
  • Page 41 Vertiv Liebert® CRV Installer/User Guide Figure 6.5 Condensate Pump Drain Piping, Chilled Water, 300 mm (12 in.) Item Description Wiring harness from electrical panel to condensate pump Adapter (field installed) Condensate drain tubing, top exit Bushing for bottom condensate exit (field installed in drain line knockout hole) Condensate pump Service loop of high and low voltage wiring for condensate pump removal.

  • Page 42: Field Installed, Gravity Fed Drain Line Requirements

    Vertiv Liebert® CRV Installer/User Guide 6.1.4 Field Installed, Gravity Fed Drain Line Requirements NOTICE Risk of water backing up in the drain line. Leaking and overflowing water can cause equipment and building damage. Do not install an external trap in the drain line. This line already has a factory installed trap inside the cabinet (except for 300 mm (12 in.)) Chilled water models).
  • Page 43 Vertiv Liebert® CRV Installer/User Guide Figure 6.6 Correct and Incorrect Gravity Drain Piping on all 600 mm (24 in.) and Water/Glycol Cooled 300 mm (12 in.) Models Item Description Item Description For downflow units Continuous downward slope For upflow units External trap. Do not trap externally. External traps, although unintentional. Lines must be rigid enough Correct drain installation to bow.
  • Page 44 Vertiv Liebert® CRV Installer/User Guide Connecting Gravity Drain Line on All 600 mm (24 in.) Models and on Air and Water/Glycol Cooled 300 mm (12 in.) Models Remove the factory supplied adapter and bushing that are tied to the condensate line inside the unit. 2. Remove the knockout in the plate inside the bottom of the unit, and insert the bushing into the knockout.
  • Page 45 Vertiv Liebert® CRV Installer/User Guide Figure 6.8 Gravity Drain Line Connection on all 600°mm°(24°in.) unit Item Description Bushing for installation after knockout is removed Adapter, 1 in. NPT male – 3/4 in. barb When coolant supply/return is top entry, remove this plate, remove the knockout for the drain, and then re-install the plate.
  • Page 46 Vertiv Liebert® CRV Installer/User Guide Figure 6.9 Gravity Drain Line Connection on Water/Glycol Cooled, 300 mm (12-in.) Unit Item Description Bushing (field installed after knockout removed) Adapter, 1 in. NPT Male – 3/4 in. barb Access plate When coolant supply/return is top entry, remove this plate, remove the knockout for the drain, and then re-install the plate.

  • Page 47: Refrigerant Piping And Charging

    Vertiv Liebert® CRV Installer/User Guide Figure 6.10 Gravity Drain Line Connection on Chilled Water, 300°mm (12 in.) Units Item Description Condensate drain (factory installed) Bushing (field installed after knockout removed) Knockout location below drain tubing (not visible in figure) Connect to field supplied drain line...

  • Page 48: Refrigerant Piping Guidelines For Air Cooled Systems

    Vertiv Liebert® CRV Installer/User Guide NOTICE Risk of oil contamination with water. Can cause equipment damage. Liebert® CRV systems require the use of POE (polyolester) oil. POE oil absorbs water at a much faster rate when exposed to air than previously used oils. Because water is the enemy of a reliable refrigeration system, extreme care must be used when opening systems during installation or service.

  • Page 49: Piping Guidelines For Liebert® Mc Condensers

    Vertiv Liebert® CRV Installer/User Guide • Refer to Refrigerant Line Sizes and Equivalent Lengths on page 46 , for recommended refrigerant piping sizes based on equivalent pipe lengths. • Refer to Refrigerant Charge Requirements for Air Cooled Systems on page 47 , for the refrigerant-charge requirements of the system.

  • Page 50: Piping Layout And Condenser Positioning

    Submittal Drawings on page 131 Piping Guidelines: Piping must be Type ACR copper tubing and sized per Liebert CRV Recommended Refrigerant Line Sizes, O.D. CU for Liebert MC Condensers with and without Liebert® Lee Temp on page 46 through Table 6.7 on page 47 . NOTE: All field installed piping must comply with applicable national, state and local codes.

  • Page 51: Top Or Bottom Connection For Refrigerant Piping On Air Cooled Units

    Vertiv Liebert® CRV Installer/User Guide Table 6.4 Maximum Equivalent Refrigerant Piping—Indoor Unit to Liebert®MC Condenser with or without Liebert® Lee-Temp Parameter Maximum Distances, ft (m) From indoor unit to condenser 300 (91.4) equivalent length Condenser without receiver relative to indoor unit Above: 60 (18.3) Below: 15 (4.5)

  • Page 52: Refrigerant Line Sizes And Equivalent Lengths

    1-1/8 (28.6)* 7/8 (22.2) Contact your Vertiv representative for line sizing for runs longer than 300 ft. (91.4 m) equivalent length. *Must down-size vertical riser one trade size (1-1/8” to 7/8”, 7/8” to 3/4”, 3/4” to 5/8”, 5/8” to 1/2”). Source: DPN000788, Rev. 13...

  • Page 53: Refrigerant Charge Requirements For Air Cooled Systems

    6.3.4 Refrigerant Charge Requirements for Air Cooled Systems The following tables provide the refrigerant charge requirements for the Liebert® CRV, connected piping and condenser options. Table 6.8 R410-A Refrigerant Chargefor Air Cooled Liebert CRV Model Base Refrigerant Charge. lb (kg) CR019RA 5 (2.7)
  • Page 54 Vertiv Liebert® CRV Installer/User Guide Table 6.9 Interconnecting Piping Refrigerant Charge for R-410A, lb per 100 ft (kg per 30 m) Hot Gas Liquid Line Size, O.D., in. lb/(kg) lb(/kg) — 3.2 (1.4) 0.7 (0.3) 5.9 (2.7) 1.1 (0.5) 9.6 (4.3) 1.6 (0.7) 14.3 (6.4) 2.3 (1.0)
  • Page 55 Vertiv Liebert® CRV Installer/User Guide Figure 6.13 Connections for Vacuum Creation and Refrigerant Charge—Air Cooled, 600°mm (24°in.) Item Description Suction, liquid, and discharge service connections Liquid line service connection (close-up view of the center callout in Item 1) High pressure switch...

  • Page 56: Additional Oil Requirements For Digital Scroll Compressors

    Do not mix oils of different viscosities. • Consult your Vertiv sales representative, visit https://www.Vertiv.com/en-us/support/, or contact the compressor manufacturer if questions arise. See Table 6.11 on the facing page , for the amount required for various system charge levels.
  • Page 57 10 (300) 10 (300) 29 (860) System charge = Indoor unit + condenser + refrigerant receiver + refrigerant lines. For system charges over 100 lbs. (45.5 kb), consult your Vertiv representative. Table 6.12 Compressor Oil Types for R-41OA Refrigerant Compressor Type...

  • Page 58: Evacuation, Leak Testing, And Charging Air Cooled Systems Without Receivers

    Vertiv Liebert® CRV Installer/User Guide Table 6.13 Volume of Oil in Standard Form Trap by Pipe Diameter Pipe diameter, in. Oil volume, oz (ml) 0.2 (5.9) 0.4 (11.8) 0.6 (17.7) 0.9 (26.6) 1-1/8 1.8 (53.2) 1-3/8 3.3 (97.6) 1-5/8 5.5 (162.7) Source: DPN003950, Rev.
  • Page 59 Vertiv Liebert® CRV Installer/User Guide 5. After completion of leak testing, release the test pressure, (observe local code) and pull an initial deep vacuum of 500 microns on the system with a suitable pump. 6. After 4 hours, check the pressure readings and, if they have not changed, break vacuum with dry nitrogen. Pull a second and third vacuum to 500 microns or less.
  • Page 60 Vertiv Liebert® CRV Installer/User Guide 2. The unit must be operating. Refer to the following if necessary: • Checks to Perform after Start-up to operate the system. • The operating manual for the Liebert® MC Condenser. Manuals are available at https://www.Vertiv.com/en-us/support/.
  • Page 61 Vertiv Liebert® CRV Installer/User Guide Table 6.14 Target Subcooling for Ambient Outdoor Temperature Ambient Temp, °F (°C) Subcooling, °F (°C) 0 (-17.8) 22 (12.0) 10 (-12.2) 22 (12.0) 20 (-6.7) 22 (12.0) 30 (-1.1) 22 (12.0) 40 (4.4) 22 (12.0) 50 (10.0) 21 (11.7) 60 (15.6)

  • Page 62: Evacuation, Leak Testing, And Charging Air Cooled Systems With Liebert® Lee-Temp Flooded Condenser Head Pressure Control System

    Vertiv Liebert® CRV Installer/User Guide Table 6.15 Liquid Pressure and Temperature Chart—R-410A Pressure Temperature* PSIG BarG °F °C 11.7 59.8 15.4 12.4 63.1 17.3 13.1 66.3 19.1 13.8 69.5 20.8 14.5 72.5 22.5 15.2 75.4 24.1 15.9 78.2 25.7 16.6 80.9 27.2...
  • Page 63 Vertiv Liebert® CRV Installer/User Guide A discharge line and liquid line must be field installed between the indoor unit and the outdoor condenser. See the appropriate piping schematic, listed in Table 6.1 on page 27 . Liebert® Lee-Temp Controlled Materials Supplied •...

  • Page 64: Superheat And Refrigerant Charge Optimization

    Vertiv Liebert® CRV Installer/User Guide 5. Close the Liebert® CRV disconnect switch. 6. In the Service menu of the Liebert® iCOM controller, select Diagnostics/Service > Diagnostics: a. Enable Manual Mode. NOTE: Manual Mode will time out after 30 minutes. b. In Evaporator Fan options set Motors to On to operate the fan during Manual Mode.

  • Page 65: Water/Glycol Loop Piping Guidelines

    Vertiv Liebert® CRV Installer/User Guide Table 6.16 R410-A Refrigerant Factory Charge and Oil Charge for Water Cooled Liebert® CRV Model R-410A Refrigerant Charge, lb (kg) Initial Oil Charge, oz. (kg)* CR019RW 6.5 (2.9) 60 (1.68) CR020RW 13.0 (5.9) 60 (1.68) CR035RW 17.0 (7.7) 110 (3.12)
  • Page 66 Vertiv Liebert® CRV Installer/User Guide NOTICE Risk of piping system corrosion and freezing fluids. Can cause leaks resulting in equipment and very expensive building damage. Cooling coils, heat exchangers and piping systems are at high risk of freezing and premature corrosion.
  • Page 67 Vertiv Liebert® CRV Installer/User Guide • Install a monitored, fluid detection system that is wired to activate the automatic closure of field installed coolant fluid supply and return shut off valves to reduce the amount of coolant fluid leakage and consequential equipment and building damage.

  • Page 68: Glycol Mixture

    Use the unit with mains or well water. Do not use water from an evaporative cooling tower unless the water hardness is controlled. • The water pressure must be 29 to 145 psi (2 to 10 bar). If water pressure is outside this range, contact Vertiv for technical support. •...
  • Page 69 Vertiv Liebert® CRV Installer/User Guide • Install a pump system calculated on the basis of the flow and total head of the system (see site plan data) and controlled by the compressor running (see label on the unit). • Insulate both pipes.

  • Page 70: Leak Checking For Unit And Field Installed Piping

    Vertiv Liebert® CRV Installer/User Guide 6.4.3 Leak Checking for Unit and Field Installed Piping The fluid systems in the Liebert® CRV are factory-checked for leaks and may be shipped with a nitrogen holding charge. At installation, check all fluid circuits for leaks.
  • Page 71 Vertiv Liebert® CRV Installer/User Guide Figure 6.17 Bottom Connections on Chilled Water Units Item Description 600 mm (24 in.) unit 300 mm (12 in.) unit Chilled water connections 6 Piping and Refrigerant Requirements...
  • Page 72 Vertiv Liebert® CRV Installer/User Guide Figure 6.18 Chilled Water Circuit Item Description Item Description Insulation Ball valve Thermostat Water drain trap Pressure gauge Tubing support Liebert® CRV Figure 6.19 Venting Air Trapped in a Chilled Water Unit Item Description Schrader valve on core...

  • Page 73: Electrical Connections

    Vertiv Liebert® CRV Installer/User Guide 7 Electrical Connections WARNING! Arc flash and electric shock hazard. Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that power is Off and wear appropriate, OSHA-approved personal protective equipment (PPE) per NFPA 70E before working within the electric control enclosure. Failure to comply can cause serious injury or death.

  • Page 74: Electrical Field Connections Descriptions

    Vertiv Liebert® CRV Installer/User Guide In case of short circuit, check the affected switch for sticking and replace it if necessary. 7.3 Electrical Field Connections Descriptions The electrical connections are described in the submittal documents included in the Submittal Drawings on page 131 .
  • Page 75 Vertiv Liebert® CRV Installer/User Guide Figure 7.1 Serial Tag Location—600 mm (24 in.) Item Description Serial tag To access the electrical panels: Refer to Remove Electrical Panel and Lower Front Panel—600 mm (24 in.) below , and remove the bolts indicated. Figure 7.2 Remove Electrical Panel and Lower Front Panel—600 mm (24 in.)
  • Page 76 Vertiv Liebert® CRV Installer/User Guide Item Description Bolts to remove for access to high voltage electrical panel Bolts to remove for access to low voltage electrical panel Bolts to remove to open lower front-baffle panel 7 Electrical Connections...

  • Page 77: Cable Entry Points On 600 Mm (24 In.) Units

    Vertiv Liebert® CRV Installer/User Guide 7.3.2 Cable Entry Points on 600 mm (24 in.) Units Figure 7.3 below shows the high and low voltage cable-entry points. Figure 7.3 Power and Control Cable Entry Points and Routing—600 mm (24 in.) Item Description High voltage top entry point Low voltage channel opening in side panel Low voltage cables route from top entry, through the channel opening in the side panel, and connect bottom of the unit to the electrical panel.

  • Page 78: Protective Features Of Electrical Heaters-600-Mm (24-In.) Units

    Vertiv Liebert® CRV Installer/User Guide 7.3.3 Protective Features of Electrical Heaters—600-mm (24-in.) Units Figure 7.4 below shows the temperature-sensor protection on the electrical heaters. Figure 7.4 Electrical Heating with Temperature Sensor Protection Item Description Temperature sensor protection 7.3.4 Accessing the Electrical Panel on 300 mm (12 in) Units The electrical panel is located on the rear of the unit behind the filters.

  • Page 79: Releasing The Electric Panel Lock

    Vertiv Liebert® CRV Installer/User Guide Figure 7.5 Pulling Out the Electrical Panel—300 mm (12 in.) Item Description Main disconnect switch Low voltage electrical panel Low voltage electrical wiring (the lower conduit carries factory wiring) Quarter turn latch Electrical panel, slides out Rear of unit, filters removed and electrical panel accessible Rear of unit, filters installed 7.3.5 Releasing the Electric Panel Lock...

  • Page 80: Protective Features Of The Electronically Commutated (Ec) Fans-All Models

    Vertiv Liebert® CRV Installer/User Guide Figure 7.6 Electric Panel Lock Item Description Slide lock latch, press to release Quarter turn latch 7.4 Protective Features of the Electronically Commutated (EC) Fans— All Models The EC fans are protected against: • Over temperature of electronics •...
  • Page 81 Vertiv Liebert® CRV Installer/User Guide • Phase failure recognition: If one phase fails for 5 seconds or longer, the motor is switched Off, electronically, with no potential for separation, and the status relay is released. When all three phases return to correct values, the motor restarts automatically in 10 to 40 seconds.
  • Page 82 Vertiv Liebert® CRV Installer/User Guide This page intentionally left blank 7 Electrical Connections...

  • Page 83: Humidifier 600 Mm (24 In.) Units Only

    Vertiv Liebert® CRV Installer/User Guide 8 Humidifier 600 mm (24 in.) Units Only 8.1 Principal of Operation When the Liebert® iCOM calls, the cylinder fills to 100% of the Full Load Amperage (FLA) or to the top of the cylinder, whichever comes first.

  • Page 84: Connecting Water Supply To The Humidifier

    Vertiv Liebert® CRV Installer/User Guide Item Description Item Description Condensate return (optional) Fill valve Steam hose Strainer Electrodes Tap water supply NOTE: The Liebert® iCOM control monitors the condition of the air discharging from the unit to protect neighboring electronic equipment. The Liebert® iCOM will prevent the humidifier from activating if the discharge air is near its saturation point.

  • Page 85: Humidifier Startup And Operation

    Vertiv Liebert® CRV Installer/User Guide 8.3 Humidifier Startup and Operation • Ambient temperature location for humidifier: 41 - 104°F (5 - 40°C). • Relative humidity location for humidifiers: 5 - 80% RH. Check to see that the unit is securely mounted on a level surface with the proper drain and water supply. Check for correct voltage with appropriately sized service.

  • Page 86: Removing The Old Canister

    Contact your local Vertiv representative to obtain a replacement cylinder. To obtain the correct cylinder, supply the cylinder model from the white 3 digit label on the cylinder, or supply the model, voltage and serial number from the unit specification label.

  • Page 87: Mandatory Cleaning Of The Drain Valve

    Vertiv Liebert® CRV Installer/User Guide 8.4.2 Mandatory Cleaning of the Drain Valve Always clean the drain valve before installing a new cylinder. Figure 8.3 below , shows an exploded view of the drain valve for reference to clean it. Remove old cylinder as described in Removing the Old Canister on the previous page .

  • Page 88: Installing The New Canister

    Vertiv Liebert® CRV Installer/User Guide 8.4.3 Installing the New Canister The reverse procedure should be followed to install a new cylinder. The main electrical disconnect is to be left open until the cylinder is completely installed and reconnected. 2. The blue sensor plug on all units is for the high water sensor pin, which always goes on the single pin with collar offset from the others.

  • Page 89: Humidifier Maintenance During Extended Shutdown

    Vertiv Liebert® CRV Installer/User Guide 8.5 Humidifier Maintenance during Extended Shutdown WARNING! Risk of electric shock. Can cause equipment damage, injury or death. Open all local and remote electric power supply disconnect switches and verify with a voltmeter that power is off before working within any electric connection enclosures.
  • Page 90 Vertiv Liebert® CRV Installer/User Guide Table 8.1 Steam Generating Humidifier Status Lights: Causes and Corrective Actions Unit Status light Symptom Corrective Actions Yellow Green This usually happens on initial startup after replacing the cylinder (normal). Water is concentrated with minerals inside the cylinder.

  • Page 91: Humidifier Troubleshooting Steps

    Verify that drain valve operates freely when activated. Clean valve and replace if defective. rate Flush canister several times and replace if arcing persists. Excessive mineral Analyze mineral content of water. If mineral content is excessive contact Vertiv Technical content in water Support. 8.5.2 Humidifier Troubleshooting Steps Auto On/Off/Drain switch in On position—unit will not fill:...
  • Page 92 Vertiv Liebert® CRV Installer/User Guide Approximately 30 seconds after the contactor pulls in, the fill valve coil should energize. There is also a visible fill relay on the printed circuit board. It is the one located farthest from the C.T. core. The points on this relay must be touching in order for the fill valve coil to be energized.

  • Page 93: Startup

    Vertiv Liebert® CRV Installer/User Guide 9 Startup 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 unit operation.

  • Page 94: Checks To Perform After Startup

    Vertiv Liebert® CRV Installer/User Guide 17. Ensure that all control system settings are correct and that there are no alarms (see Liebert® iCOM Control). 18. Water/Glycol Cooled Models Only: Verify the water flow is adequate. 19. Water/Glycol Cooled Models Only: For closed circuit units, ensure that the water pump starts when the compressor starts.

  • Page 95: Automatic Restart

    Vertiv Liebert® CRV Installer/User Guide 9.2 Automatic Restart The unit may be set to automatically restart on the return of power after a supply power interruption using the Liebert® iCOM controller. To avoid an automatic cold restart of the compressor if a power interruption of several hours is expected, stop the unit before the blackout.

  • Page 96: Chilled Water Valve- All Chilled Water Models

    Vertiv Liebert® CRV Installer/User Guide Figure 9.2 Refrigerant Line Components—Air Cooled, 300 mm (12 in.) Item Description Thermostatic expansion valve Sight glass Solenoid valve Pressure transducer Pressure transducer 9.3 Chilled Water Valve— All Chilled Water Models The chilled water units come with either a two-way or three-way valve, see Figure 9.3 on the facing page .

  • Page 97: Adjust Baffles To Direct Air Properly

    Vertiv Liebert® CRV Installer/User Guide Figure 9.3 Position of the Chilled Water Valve Actuator (for 2- or 3-Way Valve)—600 mm (24 in.) and 300 mm (12 in.) Units Item Description 600 mm (24 in.) unit 300 mm (12 in.) unit Chilled water valve actuator, 2 way valve...

  • Page 98: Adjusting Baffles-600 Mm (24 In.)

    Vertiv Liebert® CRV Installer/User Guide The Liebert® CRV is equipped with an adjustable, modular, supply air baffle system. Adjust the baffles prior to start up to direct air toward the racks that the cooling unit is intended to condition. Ideally, these should be the same racks from which the cooling unit is pulling hot air.

  • Page 99: Adjusting Blocker Plate-600 Mm (12 In.)

    Vertiv Liebert® CRV Installer/User Guide Figure 9.4 Baffle Adjustment for Correct Airflow Direction—600 mm (24 in.) Item Description Display door (open) Bolts to remove Tilt and lift out baffle panel. Changing baffle panel direction Baffles installed so that discharge air flows upward 9.4.2 Adjusting Blocker Plate—600 mm (12 in.)

  • Page 100: Adjusting Baffles-300 Mm (12 In.)

    Vertiv Liebert® CRV Installer/User Guide Figure 9.5 Air Blocker Plate Adjustment on Inside of Top/Display Door Item Description Perforated, supply air opening (some perforations removed for clarity) Air blocker over perforations. Attachment screws 9.4.3 Adjusting Baffles—300 mm (12 in.)  To adjust the baffles on 300 mm (12 in.) models: NOTE: The air baffles on 300 mm (12 in.) units may be changed to direct air either right or left.
  • Page 101 Vertiv Liebert® CRV Installer/User Guide Figure 9.6 Baffle Adjustment for Correct Airflow Direction—300 mm (24 in.) Item Description Open door Screws securing baffle panel Baffle panel (The arrows represent air flow direction). When shipped, the baffles alternate as shown.) Inside view of rotating baffle panels...
  • Page 102 Vertiv Liebert® CRV Installer/User Guide This page intentionally left blank 9 Startup...

  • Page 103: Troubleshooting

    Vertiv Liebert® CRV Installer/User Guide 10 Troubleshooting Table 10.1 below lists possible and their cause and corrective steps. Table 10.1 Unit Diagnostics Problem Possible Cause Corrective Action Dirty filters Replace filters Filter clog sensor failure Call Vertiv technical support. Incorrect positioning of...
  • Page 104 Failure Contact your local Vertiv representative Low return temperature Place a unit into standby (if applicable) Install blanking panels in open areas of racks. Consult your local Vertiv representative. Low Supply Poor airflow Temperature Alarm/ Direct discharge baffles to heat source...
  • Page 105 Vertiv Liebert® CRV Installer/User Guide Table 10.1 Unit Diagnostics (continued) Problem Possible Cause Corrective Action Unit is not properly Adjust the leveling feet leveled Unit condensate drain Remove pipe obstruction pipe is clogged Chilled water and water/glycol units: leak Locate and repair the leak...
  • Page 106 Vertiv Liebert® CRV Installer/User Guide Table 10.2 Liebert CRV Medium Control Board DIP Switch Settings Compressorized CRV Models DIP Switch Number Chilled Water Model CR040 CR019, CR020 and CR035 10 Troubleshooting...

  • Page 107: Maintenance

    Vertiv Liebert® CRV Installer/User Guide 11 Maintenance 11.1 Safety Instructions All maintenance operations must strictly observe national, state and local accident prevention regulations, especially the regulations concerning electrical systems, refrigerators and manufacturing resources. Air conditioning equipment maintenance may be performed only by authorized properly trained and qualified personnel.

  • Page 108: Facility Fluid And Piping Maintenance For Water And Glycol Systems

    11.4 Spare Parts Only original spare parts made by Vertiv must be used. Using third-party material will invalidate the warranty. When seeking technical assistance, always refer to the component list supplied with the equipment, and specify the model number, serial number and, if available, the part number.
  • Page 109 Vertiv Liebert® CRV Installer/User Guide Table 11.1  Maintenance Schedule Maintenance Period Component Monthly By Every Every Annually User 3 Months 6 Months Check unit display for clogged-filter warning Check for irregular noise from unit fans Check for irregular noise from compressor (if...

  • Page 110: Thermostatic Expansion Valve (Txv) Maintenance

    Vertiv Liebert® CRV Installer/User Guide Table 11.1  Maintenance Schedule (continued) Maintenance Period Component Monthly By Every Every Annually User 3 Months 6 Months Check compressor noise/vibrations Check oil level through compressor sight glass Adjust/tighten compressor/functional elements Check sight glass for problem detection...

  • Page 111: Adjusting Superheat Setting With The Txv

    Replacement compressors are available through your Vertiv sales office. If the unit is under warranty, the replacement compressor must be obtained from and the original compressor returned to your local Vertiv sales office. Compressors are shipped in reusable packaging, and the original compressor should be returned in the same packaging.

  • Page 112: Rotalock Valve On Digital Scroll Compressors

    Vertiv Liebert® CRV Installer/User Guide 11.7.3 Rotalock Valve on Digital Scroll Compressors WARNING! Risk of explosive discharge of high pressure refrigerant. Can cause serious injury. Neutral and service ports on the rotalock valve do not have a valve core. Front seat the service valves and relieve pressure from the compressor before loosening a part or a component attached to the service valve.

  • Page 113: Compressor Electrical Failure (Motor Burnout)

    If a burnout has occurred, a full system clean out is required. If not cleaned, compressor and system problems will continue. Consult the factory for compressor maintenance. Do not attempt to remove the compressor without first contacting Vertiv support at 1-800-543-2778.

  • Page 114: Inspect And Replace The Air Filters-600 Mm (24 In.) Models

    Vertiv Liebert® CRV Installer/User Guide 11.8 Inspect and Replace the Air Filters—600 mm (24 in.) Models NOTE: Check the air filter monthly to maintain efficient air distribution through the evaporator coil. WARNING! Risk of contact with high speed rotating fan blades. Can cause serious injury or death. Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet or on the fan assembly.
  • Page 115 Vertiv Liebert® CRV Installer/User Guide 3. Pull it out of the unit. 4. Lift the lower filter up 5. Pull the bottom of the filter away from the unit. 6. Pull it out of the unit. Figure 11.3 Remove the Air Filters—600 mm (24 in.) Models...

  • Page 116: Inspect And Replace The Air Filters-300 Mm (12 In.) Models

    Vertiv Liebert® CRV Installer/User Guide 11.9 Inspect and Replace the Air Filters—300 mm (12 in.) Models NOTE: Check the air filter monthly to maintain efficient air distribution through the evaporator coil. Switch Off the Liebert® CRV. 2. Remove the rear door by unlatching the two quarter-turn fasteners and lifting the door off. The filters are just inside the door.

  • Page 117: Condensate Drain And Condensate Pump System Maintenance

    Vertiv Liebert® CRV Installer/User Guide Figure 11.6 Differential Pressure Switch Components, 300 mm (12 in.) models Item Description Differential pressure sampling point Differential pressure switch 11.10 Condensate Drain and Condensate Pump System Maintenance 11.10.1 Condensate Drain Check for and clear obstructions in tubing during routine maintenance.

  • Page 118: Air-Cooled Condenser And Drycooler Maintenance

    Vertiv Liebert® CRV Installer/User Guide Figure 11.7 Condensate Pump Locations Item Description 600 mm (24 in.) unit, near the front of the unit 300 mm (12 in.), air cooled unit, near the front of the unit 300 mm (12 in.), chilled water unit, near the rear of the unit 300 mm (12 in.), water/glycol cooled unit, near the front of the unit...

  • Page 119: Fan Replacement

    Vertiv Liebert® CRV Installer/User Guide 11.13 Fan Replacement 11.13.1 Replacing a Fan in 600 mm (24 in.) Models WARNING! Risk of contact with high speed rotating fan blades. Can cause serious injury or death. Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet or on the fan assembly.

  • Page 120: Replacing A Fan In 300 Mm (12 In.) Models

    Vertiv Liebert® CRV Installer/User Guide Item Description Wire entry into fan electrical-junction box Mounting plate Bolts, 2 on each side of fan, 4 total Corner brace with 4 bolts 11.13.2 Replacing a Fan in 300 mm (12 in.) Models WARNING! Risk of contact with high speed rotating fan blades. Can cause serious injury or death. Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet or on the fan assembly.

  • Page 121: Considerations When Dismantling The Unit

    Vertiv Liebert® CRV Installer/User Guide Figure 11.9 Fan Assembly components—300 mm (12 in.) models Item Description Screw in bottom half of upper fan assembly Screw in keyhole slot in top half of lower fan assembly Intersection of two fan assemblies Upper screw in keyhole slot Lower screws Lift the fan assembly up and out of the unit.

  • Page 122: F-Gas Regulation (Ec) No. 842/2006

    Vertiv Liebert® CRV Installer/User Guide 11.15 F-Gas Regulation (EC) No. 842/2006 Stationary air conditioning placed in the European Community market and operating with fluorinated greenhouse gases (F- gas), such as R-134A, R-407C and R-410A, must comply with the F-gas Regulation (applied since July 4, 2007).
  • Page 123 Vertiv Liebert® CRV Installer/User Guide d. For equipment with double refrigeration circuits, in regards to different requirements based on the quantity of F-gas contained, the required information about refrigerant charge quantities must be listed separately for each individual circuit. e. For equipment with separate indoor and outdoor sections connected by refrigerant piping, the label information will be on that part of the equipment that is initially charged with the refrigerant.
  • Page 124 Vertiv Liebert® CRV Installer/User Guide This page intentionally left blank 11 Maintenance...

  • Page 125: Preventive Maintenance Worksheet

    Vertiv Liebert® CRV Installer/User Guide 12 Preventive Maintenance Worksheet Source: DPN002954, Rev. 1 Inspection Date Job Name Indoor Unit Model # Indoor Unit Serial Number # Condenser/Drycooler Model # Condenser/Drycooler Serial # Room Temperature/Humidity °                     % Ambient Temperature ° Not all units will have all components. To determine your unit’s configuration, compare the...
  • Page 126 Vertiv Liebert® CRV Installer/User Guide Condensate Pump (if equipped) Check for debris in sump 2. Check operation of float(s) (free movement) 3. Check/clean discharge check valve Electrical Panel Check fuses 2. Check contactors for pitting (Replace if pitted) 3. Check/re-torque wire connections...
  • Page 127 Vertiv Liebert® CRV Installer/User Guide Water Cooled Condensers (if equipped) Verify proper water maintenance/treatment is being performed 2. Check water-regulating valve (motorized ball valve) operation 3. Verify water flow 4. Clean screen on Y strainer (if equipped) 5. Cap tubes (not rubbing) 6.
  • Page 128 Vertiv Liebert® CRV Installer/User Guide Liebert® MC Condenser (if equipped) Coil clean 2. Fans free of debris 3. Fans securely mounted 4. Motor bearings in good condition 5. Check all refrigerant lines for vibration isolation. Support as necessary 6. Check for refrigerant leaks 7.
  • Page 129 Vertiv Liebert® CRV Installer/User Guide MAINTENANCE NOTES Name Signature Company Make photocopies for your records. Compare readings/information to previous maintenance worksheet. To locate your local Vertiv representative for Vertiv engineered parts, check https://www.Vertiv.com/en-us/support/ or Call 1-800-543-2778. 12 Preventive Maintenance Worksheet...
  • Page 130 Vertiv Liebert® CRV Installer/User Guide This page intentionally left blank 12 Preventive Maintenance Worksheet...

  • Page 131: Appendices

    Vertiv Liebert® CRV Installer/User Guide Appendices Appendix A: Technical Support and Contacts A.1 Technical Support/Service in the United States Vertiv Group Corporation 24x7 dispatch of technicians for all products. 1-800-543-2378 Liebert® Thermal Management Products 1-800-543-2778 Liebert® Channel Products 1-800-222-5877 Liebert® AC and DC Power Products 1-800-543-2378 A.2 Locations...
  • Page 132 Vertiv Liebert® CRV Installer/User Guide This page intentionally left blank Appendices...

  • Page 133: Appendix B: Model Number Nomenclature Detail

    25 digit configuration number. The 14 digit model number consists of the first 10 digits and last four digits of the configuration number. Table B.1 Liebert CRV 25 Digit Configuration Number Example Model # Part 1...
  • Page 134 Vertiv Liebert® CRV Installer/User Guide Table B.2 CRV Model Number Digit Definitions (continued) Digit Description 4 = Top Connections Only (300 mm [12 in.] W/G only) 5 = Bottom Connections Only (300 mm [12 in.] W/G only) Digit 11 - Humidifier 0 = None S = Steam Generating Canister (600 mm [24 in.] models only)
  • Page 135 Vertiv Liebert® CRV Installer/User Guide Table B.2 CRV Model Number Digit Definitions (continued) Digit Description Digit 19 - Liebert® IIntelliSlot™ Housing 0 = No Cards C = (1) Liebert® SiteLink-E™ Card ™ U = (1) Liebert® IntelliSlot Unity DP Card 6 = (1) Liebert®...
  • Page 136 Vertiv Liebert® CRV Installer/User Guide This page intentionally left blank...

  • Page 137: Appendix C: Submittal Drawings

    Vertiv Liebert® CRV Installer/User Guide Appendix C: Submittal Drawings The submittal drawings are in the order of document part number (DPN). Table C.1 below , groups the drawings by topic/application. Table C.1 Submittal Drawings Contents Document Number Title Component Planning Drawings DPN003738 Component Location Diagram,, 600mm (24in.) Models...
  • Page 138 Vertiv Liebert® CRV Installer/User Guide Table C.1 Submittal Drawings Contents (continued) Document Number Title DPN003036 CANbus & Interlock Connections between 300 mm (12 in.) Unit & Liebert® MC (Premium) DPN003588 Low Voltage Field Wiring Routing, 300 mm (12 in.) All Models DPN003589 Power Cable Routing Bottom Entry, 300 mm (12 in.) Air Cooled &...
  • Page 139 LIEBERT® CRV COMPONENT LOCATION DIAGRAM 600mm (24in.) MODELS Top Electrical entrance Electric Box Top humidifier water supply, condensate pump drain Supply & Return connections EC plug fans Electric heaters Humidifier distributor Condensate pump Bottom Electrical entrance Bottom condensate pump drain Evaporator / CW coil Liebert®...
  • Page 140 LIEBERT® CRV COMPONENT LOCATION 300mm (12in.) AIR COOLED MODELS Liebert® iCOM™ Display Front Evaporator Coil Refrigerant piping connections & Condensate Pump Drain (Bottom) Electrical connection (Bottom) Compressor Caster & Leveling Foot (each corner) Electric Box Serial Tag Main Disconnect Switch Top Electrical Entrance Baffles (5 assemblies) EC Plug Fans...
  • Page 141 LIEBERT® CRV COMPONENT LOCATION 300mm (12in.) WATER GLYCOL COOLED MODELS FRONT REAR Supply/Return Bottom Piping Option Supply/Return Top Piping Option REAR FRONT REAR FRONT Components common to Top and Bottom Piping Options 1 Liebert® iCOM™ Display 11 Top Electrical Entrance 2 Evaporator Coil 12 Baffles (5 assemblies) 3 Supply/Return Connections (Bottom Piping Option)
  • Page 142 LIEBERT® CRV COMPONENT LOCATION 30mm (12in.) CHILLED WATER MODELS Liebert® iCOM™ Display FRONT Cooling Coil Knockouts for Bottom Electrical Entrance Supply/Return Piping Connections (Bottom) Bottom Chilled Water and Condensate Pump Drain Connections Caster & Leveling Foot (each corner) Chilled Water Valve (2 or 3-way valve) Electric Box Serial Tag Main Disconnect Switch...
  • Page 143 LIEBERT® CRV CABINET DIMENSIONAL DATA 600mm (24in.) MODELS ACCESS REQUIRED TO SERVICE THE LIEBERT® CRV UNIT WITHIN THE ROW REAR SERVICE AREA IS S+B OR S+A WHEN B IS NOT AVAILABLE 25 9/16" 35 9/16" 650mm 903mm 13 3/4" 350mm REAR 78 3/4"...
  • Page 144 LIEBERT® CRV CABINET DIMENSIONAL DATA 300mm (12in.) MODELS 18" 457mm LIFTOFF DOOR 78 3/4" 36" 2000mm 914mm TOP OF UNIT TO FLOOR ELECTRIC BOX 1 Front of Unit REAR SIDE 43 5/16" 1100mm TOP VIEW 11 13/16" 300mm FRONT SIDE with Display 12"...
  • Page 145 1. Schematic representation shown. Do not use for specific connection locations. 2. Components are not supplied by Vertiv™, but are required for proper circuit operation and maintenance. Liebert® CRV has an internal trap at the base of the unit. For field piping the discharge line vertical rise starts at the base of the unit and not the top of the unit.
  • Page 146 1. Schematic representation shown. Do not use for specific connection locations. 2. Components are not supplied by Vertiv™, but are required for proper circuit operation and maintenance. Liebert® CRV has an internal trap at the base of the unit. For field piping, the discharge line vertical rise starts at the base of the unit and not at the top.
  • Page 147 LIEBERT® MC AIR COOLED PIPING SCHEMATIC CONDENSER ABOVE INDOOR UNIT Liquid 7.6" 194mm Liebert® MC with Receiver (Piping to Condenser & Receiver not shown for clarity) Liebert® MC without Receiver (Piping to Condenser not shown for clarity) Notes: 1. Pitch horizontal hot gas piping at a minimum of 18.3m 1/2"...
  • Page 148 TXV inside the indoor unit, otherwise extended legs or Liebert® DS035-105 Downflow/Upflow 43 (1092) a field piped subcooler needs to be utilized. Contact your Vertiv™ sales representative for additional information. Liebert® CRV - CR019 45 (1143) Liebert® CRV - CR020/CR035...
  • Page 149 5. The bottom of the coil must be less than 15' (4.6m) below the elevation Liebert® DS035-105 Downflow/Upflow 43 (1092) of the TXV inside the indoor unit. Contact your Vertiv™ sales representative for additional information. Liebert® CRV - CR019 45 (1143) Liebert® CRV - CR020/CR035...
  • Page 150 TXV in the indoor unit, otherwise extended legs or a field piped subcooler needs to be utilized. Contact your Vertiv™ sales representative for additional information. 6. This Configuration is not valid for Liebert® MC with Lee-Temp or unheated receiver.
  • Page 151 LIEBERT® CRV PRIMARY CONNECTION LOCATIONS CR020RA & CR035RA AIR COOLED MODELS Notes: 1. Piping and electrical connections available at the top and bottom of unit. Attention: Air cooled systems may require additional oil to be added in the field in order to allow for sucfficient compressor lubrication.
  • Page 152 LIEBERT® CRV PRIMARY CONNECTION LOCATIONS 300mm (12in.) AIR COOLED MODELS PIPING AND ELECTRICAL CONNECTIONS AVAILABLE AT THE TOP AND BOTTOM OF UNIT. ATTENTION, AIR COOLED SYSTEMS MAY REQUIRE ADDITIONAL OIL TO BE ADDED IN THE FIELD IN ORDER TO ALLOW FOR SUFFICIENT COMPRESSOR LUBRICATION.
  • Page 153 LIEBERT® CRV GENERAL ARRANGEMENT DIAGRAM 600mm WATER/GLYCOL COOLED MODELS Distributor Evaporator Coil Vibration Sensing Absorber Bulb CR020 Digital Rotalock Valve Solenoid Valve High Pressure CR035 Digital Transducer Solenoid Valve External Equalizer Low Pressure Transducer High Pressure Switch Rotalock Valve Expansion Valve Digital Vibration...
  • Page 154 CLEANED WHILE MAINTAINING FLOW TO THE COOLING UNIT. 3. UNIT CONNECTIONS MAY BE ORDERED TOP OR BOTTOM. 4. VALVE NOT PROVIDED BY VERTIV™ BUT ARE REQUIRED FOR PROPER CIRCUIT OPERATION AND MAINTENANCE. THEY SHOULD BE LOCATED NEAR THE LIEBERT® CRV300 UNIT.
  • Page 155 LIEBERT® CRV PRIMARY CONNECTION LOCATIONS CR020RW & CR035RW WATER/GLYCOL MODELS Rear View (components removed for clarity) Notes: 1. Pipinig and Electrical connections available at the top & bottom of unit. 2. Install a 35 mesh strainer, in an easily accessible location, on the Water/Glycol Supply to prevent particles from entering the heat exchanger.
  • Page 156 LIEBERT® CRV PRIMARY CONNECTION LOCATIONS 300mm (12in.) WATER/GLYCOL COOLED MODELS PIPING CONNECTION LOCATIONS MUST BE ORDERED TOP OR BOTTOM. ELECTRICAL CONNECTIONS AVAILABLE TOP OR BOTTOM OF UNIT. Front of Unit (Internal Piping and top of unit Front of Unit hidden for clarity) 10 1/2"...
  • Page 157 LIEBERT® CRV GENERAL ARRANGEMENT DIAGRAM 600mm (24in.) CHILLED WATER MODELS Chilled Water Coil Air Bleed Valve 3-Way Motorized Ball 2-Way Motorized Ball Valve Configuration Valve Configuration Plug Pipe Chilled Water Return (Top of Unit Connection) Plug Pipe Chilled Water Return (Bottom of Unit Connection) Plug Pipe Chilled Water Supply...
  • Page 158 LIEBERT® CRV GENERAL ARRANGEMENT DIAGRAM 300mm (12in.) CHILLED WATER MODELS Chilled Water Coil 2-Way Motorized Ball 3-Way Motorized Ball Valve Configuration Valve Configuration Plug Pipe Chilled Water Supply (Top of Unit Connection) Plug Pipe Chilled Water Supply (Bottom of Unit Connection) Plug Pipe Chilled Water Return (Top of Unit Connection)
  • Page 159 LIEBERT® CRV PRIMARY CONNECTION LOCATIONS CR040 CHILLED WATER MODELS Rear View (components removed for clarity) Notes: 1. Pipinig and Electrical connections available at the top & bottom of unit. 6 13/16" 172mm DETAIL A 4 9/16" 117mm Rear of Unit Rear of Unit (Internal Piping and top of unit removed Rear of Unit...
  • Page 160 LIEBERT® CRV LIEBERT® INTELLISLOT CABLE CONNECTION PATHS LIEBERT® INTELLISLOT WIRE ROUTING TOP OF UNIT 300mm (12in.) ALL MODELS Low voltage field wiring (twisted pair) Low voltage field wiring (twisted pair) DPN002814 REV : 7 Page :1 /3 REV DATE : 5/20...
  • Page 161 LIEBERT® CRV LIEBERT® INTELLISLOT CABLE CONNECTION PATHS LIEBERT® INTELLISLOT WIRE ROUTING BOTTOM OF UNIT 300mm (12in.) AIR, WATER/GLYCOL COOLED MODELS Low voltage field wiring (shielded cable) Low voltage field wiring (twisted pair) Secure tie the field wiring shielded cable to the rail.
  • Page 162 LIEBERT® CRV LIEBERT® INTELLISLOT CABLE CONNECTION PATHS LIEBERT® INTELLISLOT WIRE ROUTING BOTTOM OF UNIT 300mm (12in.) CHILLED WATER MODELS Low voltage field wiring (shielded cable) Low voltage field wiring (twisted pair) Secure the shielded cable to the rail. Route the shielded cable up toward the Intellislots and fasten to the side rails as needed.
  • Page 163 LIEBERT® CRV PRIMARY CONNECTION LOCATIONS 300mm (12in.) CHILLED WATER MODELS PIPING AND ELECTRICAL CONNECTIONS AVAILABLE AT THE TOP AND Front of Unit BOTTOM OF UNIT. (Internal Piping and top of unit Front of Unit remvoved for clarity) 19" 483mm 24 1/4" 20"...
  • Page 164 LIEBERT® CRV ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS 600mm (24in.) MODELS STANDARD ELECTRICAL CONNECTIONS High voltage connection through the bottom of the electric panel – 1-3/8” (34.9mm), 1-3/4” (44.5mm) & 2-1/2” (64mm) diameter concentric knockout. Low voltage connection through the bottom of the electric panel - Quantity (2) 7/8” (22mm) diameter knockouts. High voltage connection through the top of the unit –...
  • Page 165 LIEBERT® CRV ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS 600mm (24in.) MODELS ELECTRICAL CONNECTIONS FOR OPTIONAL FEATURES 16) Condensate pump high water alarm (available when optional pump is installed) - On pump high water indication, normally open contact is closed across terminals 88 & 89 for remote indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring. 17) Liebert®...
  • Page 166 LIEBERT® CRV ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS 600mm (24in.) MODELS UNIT TOP OVERLOAD PROTECTORS USED CONTACTORS USED UNIT DISCONNECT SWITCH FACTORY TERMINALS TYPICAL 2 UNIT BASE 2-1/2" (64mm) Filed high volt K.O. 1-3/32" (28mm) 1-3/4" (44.5mm) Filed low volt K.O. Field low volt CANbus K.O. DPN001884 REV : 9 Page :3 /3...
  • Page 167 LIEBERT® CRV CANbus & INTERLOCK CONNECTIONS BETWEEN 600mm (24in.) UNIT & LIEBERT® MC (PREMIUM) J6 TERMINATION JUMPER MUST BE SET TO PINS 1 AND 2. TB50 CAN H OUTPUT LIEBERT® MC CAN L TB49 INPUT CANbus TB50 CAN H OUT P UT CAN L TB49 INPUT...
  • Page 168 LIEBERT® CRV CANbus & INTERLOCK CONNECTIONS BETWEEN 600mm (24in.) UNIT & LIEBERT® MC (PREMIUM) COMPONENT NOTES: 1. COMPONENT APPEARANCE, ORIENTATION, AND POSITION MAY VARY TERMINAL NAMES AND CALLOUTS REMAIN CONSTANT. 2. ALL CIRCUITS TO THESE CONNECTION POINTS ARE CLASS 2. CAN &...
  • Page 169 LIEBERT® CRV ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS 300mm (12in.) MODELS SAFETY INSTRUCTIONS: READ ALL SAFETY MESSAGES IN USER MANUAL BEFORE STARTING ELECTRICAL CONNECTIONS STANDARD ELECTRICAL CONNECTIONS (See unit views for item callouts) High voltage connection through the rear of the disconnect switch box – 1-1/8” (28.6mm) & 1-3/4” (44.5mm) diameter concentric knockout.
  • Page 170 LIEBERT® CRV ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS 300mm (12in.) MODELS SAFETY INSTRUCTIONS: READ ALL SAFETY MESSAGES IN USER MANUAL BEFORE STARTING ELECTRICAL CONNECTIONS ELECTRICAL CONNECTIONS FOR OPTIONAL FEATURES (See unit views for item callouts) 17) Condensate pump high water alarm (available when optional pump is installed) - On pump high water indication, normally open dry contact is closed across terminals 88 &...
  • Page 171 LIEBERT® CRV ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS 300mm (12in.) MODELS 1 3/4" K.O. 44mm 1 1/8" K.O. 29mm See page 4 for Disconnect Views VIEW A-A Factory provided conduit for routing field low voltage wiring to unit electric box. 19 11 VIEW B-B Air and Water/ Upper terminals...
  • Page 172 LIEBERT® CRV ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS 300mm (12in.) MODELS DISCONNECT VIEWS 208/230V 3 phase 460V wye 208/230V 1 phase 120V cord connected (3 phase + neutral + ground) (CW only) (CW only) POWER SUPPLY REQUIREMENTS FOR 460V CRV 300 mm (12in.) UNITS 460V Wye Power Supply Connection 460V Delta Power Supply Connection (3 phase + Neutral + Ground)
  • Page 173 LIEBERT® CRV ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS 300mm (12in.) MODELS MAIN POWER CORD ROUTING - 120V CW UNITS DPN002810 REV : 7 Page :5 /5 REV DATE : 5/20...
  • Page 174 LIEBERT® CRV CANbus & INTERLOCK CONNECTIONS BETWEEN 300mm (12in.) UNIT & LIEBERT® MC (PREMIUM) J6 TERMINATION JUMPER TB50 CAN H MUST BE SET TO PINS 1 AND 2. OUTPUT LIEBERT® MC CAN L TB49 CANbus INPUT ADDRESSING TB50 CAN H OUTPUT SWITCH CAN L...
  • Page 175 LIEBERT® CRV CANbus & INTERLOCK CONNECTIONS BETWEEN 300mm (12in.) UNIT & LIEBERT® MC (PREMIUM) J6 TERMINATION JUMPER TB50 CAN H MUST BE SET TO PINS 1 AND 2. OUTPUT LIEBERT® MC CAN L TB49 CANbus INPUT ADDRESSING TB50 CAN H OUTPUT SWITCH CAN L...
  • Page 176 LIEBERT® CRV LOW VOLTAGE FIELD WIRING ROUTING 300mm (12in.) ALL MODELS Low Voltage Field Wiring Factory Wiring Low Voltage Field Wiring DPN003588 REV : 2 Page :1 /1 REV DATE : 5/20...
  • Page 177 LIEBERT® CRV POWER CABLE ROUTING BOTTOM ENTRY 300mm (12in.) AIR COOLED & WATER GLYCOL COOLED MODELS Use rear knockout on Main Disconnect for High Voltage wire entry Notes: 1. Some components not shown for clarity. 2. General wire routing paths shown. Wiring must be run in conduit and must be inside Liebert®...
  • Page 178 LIEBERT® CRV POWER CABLE ROUTING BOTTOM ENTRY 300mm (12in.) CHILLED WATER MODELS Use rear knockout on Main Disconnect for High Voltage wire entry Notes: 1. Some components not shown for clarity. 2. General wire routing paths shown. Wiring must be run in conduit and must be inside Liebert®...
  • Page 179 Vertiv Liebert® CRV Installer/User Guide...
  • Page 180 Vertiv.com | Vertiv Headquarters, 1050 Dearborn Drive, Columbus, OH, 43085, USA © 2021 Vertiv Group Corp. All rights reserved. Vertiv™ and the Vertiv logo are trademarks or registered trademarks of Vertiv Group Corp. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy and completeness here, Vertiv Group Corp.

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