Vertiv Liebert CW440 User Manual
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Vertiv Liebert CW440 User Manual

Vertiv Liebert CW440 User Manual

Thermal management system
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Liebert® CW440 Thermal
Management System
User Guide and System Design
440 kW Capacity, 60 Hz

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Summary of Contents for Vertiv Liebert CW440

  • Page 1 Liebert® CW440 Thermal Management System User Guide and System Design 440 kW Capacity, 60 Hz...
  • 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

    Vertiv™ Liebert® CW440 User Guide and System Design TABLE OF CONTENTS 1 Important Safety Instructions 2 Nomenclature and Components 2.1 Vertiv™ Liebert® CW Model Number Nomenclature 2.2 Component Location 3 Planning Guidelines 3.1 Capacity and Physical Data 3.2 Unit Weights and Shipping Dimensions 3.3 Planning Dimensions...
  • Page 4 Vertiv™ Liebert® CW440 User Guide and System Design 12.2.1 Protective Features 12.2.2 Fan Impellers and Bearings Maintenance 12.2.3 Fan Assembly Troubleshooting 12.3 Condensate Drain and Condensate Pump System Maintenance 12.3.1 Condensate Drain 12.3.2 Condensate Pump 12.4 Fluid and Piping Maintenance...

  • Page 5: Important Safety Instructions

    NEC, CEC and local codes, as applicable. Verify with a voltmeter that power is Off. The Vertiv™ Liebert® iCOM™ controller does not isolate power from the unit, even in the “Unit Off” mode. Some internal components still require and receive power even during the “Unit Off”...
  • Page 6 Vertiv™ Liebert® CW440 User Guide and System Design WARNING! Risk of improper moving. Can cause equipment damage, injury or death. Use only lifting equipment that is rated for the unit weight by an OSHA certified rating organization. The center of gravity varies depending on the unit size and selected options.
  • Page 7 Vertiv™ Liebert® CW440 User Guide and System Design CAUTION: Risk of heavy unit falling into defective raised floor. Can cause injury and equipment damage. Prior to installation, all floor tiles immediately around floor stand are to be removed and inspected. Make sure tiles are not cracked, and ribs have not been cut.
  • Page 8 Vertiv™ Liebert® CW440 User Guide and System Design NOTICE Risk of piping system corrosion and freezing fluids. Can cause leaks resulting in equipment and very expensive building damage. Cooling coils and piping 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 and piping corrosion.
  • Page 9 Water leakage can result in severe property damage and loss of critical data center equipment. Do not locate unit directly above any equipment that could sustain water damage. Vertiv recommends installing monitored leak detection equipment for the unit and supply and return lines. NOTICE Risk of passageway interference.
  • Page 10 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank 1 Important Safety Instructions...

  • Page 11: Nomenclature And Components

    Vertiv™ Liebert® CW440 User Guide and System Design 2 Nomenclature and Components This section describes the model number for Vertiv™ Liebert® CW440 Thermal Management System units and components. 2.1 Vertiv™ Liebert® CW Model Number Nomenclature Table 2.2 below describes each digit of the model number.

  • Page 12: Component Location

    Vertiv™ Liebert® CW440 User Guide and System Design 2.2 Component Location The unit component locations are described in the submittal documents included in the Submittal Drawings on page 61 . The following table lists the relevant documents by number and title.

  • Page 13: Planning Guidelines

    Vertiv™ Liebert® CW440 User Guide and System Design 3 Planning Guidelines 3.1 Capacity and Physical Data Table 3.1 Performance Data, Standard Chilled Water Unit with EC Fans Model No. NET CAPACITY DATA kBTU/H (kW) BASED ON 62°F (16.7°C) ENTERING WATER, 12°F (6.7°C) WATER RISE 95°F DB, 70.7°F WB (35°C DB, 21.5°C WB) 30% RH...

  • Page 14: Unit Weights And Shipping Dimensions

    NOTE: When entering fluid temperature is lower than the dew point temperature, hydrophilic coil is required. If entering fluid temperature is higher than the dew point temperature, aluminum fin coil may be used. Please contact Vertiv sales representative to discuss application options based on site performance parameters and ASHRAE operating envelope.

  • Page 15: Planning Dimensions

    Vertiv™ Liebert® CW440 User Guide and System Design 3.3 Planning Dimensions The unit, floor stand, and plenum dimensions are described in the submittal documents included in the Submittal Drawings page 61 . The following table lists the relevant documents by number and title.
  • Page 16 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank 3 Planning Guidelines...

  • Page 17: Pre-Installation Preparation And Guidelines

    For proper humidity control, keep outside or fresh air to an absolute minimum (less than 5% of total air circulated in the room). • Do not install a Vertiv™ Liebert® CW440 Thermal Management System in an alcove or at the end of a long, narrow room. •...
  • Page 18 Vertiv™ Liebert® CW440 User Guide and System Design Figure 4.1 Unit and High Point Marking on Concrete Slab Item Description Concrete slab High point 4 Pre-installation Preparation and Guidelines...

  • Page 19: 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 20: Hardware Kit

    Lift points are rated for lifting this section only. Do not lift assembled sections from these lift points. Vertiv does not provide rigging. Refer to the following for recommended rigging process. •...
  • Page 21 Vertiv™ Liebert® CW440 User Guide and System Design Figure 5.1 Rigging Fastener Installation Item Description Eye nut, 1/2-13 thread Lock washer, 1/2-in. Flat washer, 1/2-in. 1-in. x 1-in. tube Screw, 1/2-13 x 4 in. 5 Equipment Inspection and Handling...
  • Page 22 Vertiv™ Liebert® CW440 User Guide and System Design Figure 5.2 Lift Points on the Coil Section Item Description Coil section 5 Equipment Inspection and Handling...
  • Page 23 Vertiv™ Liebert® CW440 User Guide and System Design Figure 5.3 Lift Points on Filter Plenum, Plenum Extension, and Fan Sections Item Description Plenum extension Filter plenum Fan section 5 Equipment Inspection and Handling...
  • Page 24 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank 5 Equipment Inspection and Handling...

  • Page 25: Installing The Unit

    2. Install additional steel shims, spaced not more than 6 ft apart. 3. Apply 1-in. (25-mm) wide [1/2-in (13 mm) wide on Vertiv™ Liebert® CW440 seismic installations] adhesive- backed foam (factory supplied) to the inner-most edge of the mating surface of the bottom section.
  • Page 26 Vertiv™ Liebert® CW440 User Guide and System Design Figure 6.1 Placing the Unit and Upper Sections Item Description Connection locations Bolt, 1/2-13 x 7.5 in. Flat washer, 1/2-in. Lock nut, 1/2-13 thread Steel shims under all lifting points Established high point...

  • Page 27: Connecting Unit Sections (Recommended)

    Secure the coil section frame to the fan base frame and the filter section frame to the coil section frame. Ten locations on the Vertiv™ Liebert® CW440 are provided to connect the 3 unit sections. If a plenum option is included, 14 locations on the CW440 are provided.

  • Page 28: Routing The Filter Clog Pickup Tube In The Plenum

    Vertiv™ Liebert® CW440 User Guide and System Design 6.2 Routing the Filter Clog Pickup Tube in the Plenum The pressure pick-up tube must be routed and mounted for proper operation of the filter clog alarm. The tube is factory connected to the filter clog switch in the low voltage control box of the coil sections.

  • Page 29: Electrical Connections In The Unit

    NEC, CEC and local codes, as applicable. Verify with a voltmeter that power is Off. The Vertiv™ Liebert® iCOM™ controller does not isolate power from the unit, even in the “Unit Off” mode. Some internal components still require and receive power even during the “Unit Off”...

  • Page 30: Fan High Voltage Connections

    Vertiv™ Liebert® CW440 User Guide and System Design The electrical connections are described in the submittal documents included in the Submittal Drawings on page 61 . The following table lists the relevant documents by number and title. Table 7.1 Electrical Field Connection Drawings...

  • Page 31: Condensate Pump High And Low Voltage Connections

    Vertiv™ Liebert® CW440 User Guide and System Design 7.3 Condensate Pump High and Low Voltage Connections The coil and fan sections are factory wired with a quick connect connector for the condensate pump. After the coil section is lowered and secured to the fan section, connect the pump harness from the fan section to the plug provided in the underside of the coil section, see Figure 7.2 below .
  • Page 32 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank 7 Electrical Connections in the Unit...

  • Page 33: Piping Requirements

    Vertiv™ Liebert® CW440 User Guide and System Design 8 Piping Requirements Factory installed piping brackets must not be removed. Field installed piping must be installed in accordance with local codes and must be properly assembled, supported, isolated and insulated. Avoid piping runs through noise sensitive areas, such as office walls and conference rooms.

  • Page 34: Field Installed, Gravity Drain Line Requirements

    Vertiv™ Liebert® CW440 User Guide and System Design 8.1.1 Field Installed, Gravity Drain Line Requirements NOTICE Risk of water backing up in the drain line. Leaking and overflowing water can cause equipment and building damage. Sagging condensate drain lines may inadvertently create an external trap.
  • Page 35 Vertiv™ Liebert® CW440 User Guide and System Design Figure 8.1 Drain Trap Locations Figure 8.2 Typical Drain Trap Construction Item Description Condensate discharge pipe from unit Coupling (threaded socket) Nipple Cross Threaded plugs (for clean out) Bend Vacuum breaker Sloped drain pipe...

  • Page 36: Installing Condensate Discharge Tubing On Units With A Condensate Pump

    Vertiv™ Liebert® CW440 User Guide and System Design Figure 8.3 Negative Pressure Drain Trap Construction Item Description Condensate drain pan Condensate discharge pipe from unit/drain pan One-half of dimension "H" Total static pressure in inches of water column plus a minimum of one inch.

  • Page 37: Flanged Connections

    Vertiv™ Liebert® CW440 User Guide and System Design Figure 8.4 below shows the connection for flanged. Figure 8.4 Field Connections for the Factory Piped Condensate Pump: Units with Flanged Customer Pipe Connections Item Description Connection locations Condensate pump NOTE: This image represents the location of the condensate pump.
  • Page 38 After the three basic passes are completed, repeat criss-cross sequence until no further rotation of the nut is observed. Field flange connection to the Vertiv™ Liebert® CW440 unit must be installed in accordance with local codes and best industry practice.

  • Page 39: Flushing The Entire Water System Before Start-Up

    Vertiv™ Liebert® CW440 User Guide and System Design 8.4 Flushing the Entire Water System before Start-up Both the pressurized water system and the drain system must be flushed before start-up: • Flush all fresh water lines before connecting to the cooling coils until the water runs clear and all debris is flushed out.
  • Page 40 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank 8 Piping Requirements...

  • Page 41: Checklist For Completed Installation

    Vertiv™ Liebert® CW440 User Guide and System Design 9 Checklist for Completed Installation 9.1 Moving and Placing Equipment Unpack and check received material. 2. Proper clearance for service access has been maintained around the equipment. 3. Equipment is level and mounting fasteners are tight.
  • Page 42 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank 9 Checklist for Completed Installation...

  • Page 43: Initial Start-Up Checks And Commissioning Procedure For Warranty Inspection

    NEC, CEC and local codes, as applicable. Verify with a voltmeter that power is Off. The Vertiv™ Liebert® iCOM™ controller does not isolate power from the unit, even in the “Unit Off” mode. Some internal components still require and receive power even during the “Unit Off”...
  • Page 44 This information must be completed and forwarded to validate warranty. • Contact your local sales representative or technical support if you have any questions or problems during unit start-up and commissioning. Visit https://www.Vertiv.com/en-us/support/ or call 1-800-543-2778 for contacts. 10 Initial Start-up Checks and Commissioning Procedure for Warranty Inspection...

  • Page 45: Troubleshooting

    Check or Remedy Check L1, L2 and L3 for rated voltage. No main power Check Vertiv™ Liebert® CW440 Thermal Management System for unit status (Stand-by, Unit Off, Monitoring Off or Remote Off). Blown fuse or tripped circuit Check fuses or CBs to main fan.
  • Page 46 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank 11 Troubleshooting...

  • Page 47: Maintenance

    NEC, CEC and local codes, as applicable. Verify with a voltmeter that power is Off. The Vertiv™ Liebert® iCOM™ controller does not isolate power from the unit, even in the “Unit Off” mode. Some internal components still require and receive power even during the “Unit Off”...

  • Page 48: Filters

    Vertiv™ Liebert® CW440 User Guide and System Design 12.1 Filters NOTICE Risk of improper filter installation. Can cause filter collapse and airflow reduction. Filters are usually the most neglected item in an environmental control system. To maintain efficient operation, they should be checked monthly and changed as required.

  • Page 49: Protective Features

    Monitoring functions protect the motor against over temperature of electronics, over temperature of motor and incorrect rotor position detection. With any of these failures, an alarm will display through the Vertiv™ Liebert® iCOM™ controller and the motor stops electronically. There is no automatic restart. The power must be switched off for a minimum of 20 seconds once the motor is at a standstill.
  • Page 50 Vertiv™ Liebert® CW440 User Guide and System Design CAUTION: Risk of exposure to harmful noise levels. Can cause hearing injury or loss. Depending on the installation and operating conditions, a sound pressure level greater than 70 dB(A) may arise. Take appropriate technical safety measures. Operating personnel must wear appropriate, OSHA-approved PPE and observe all appropriate hearing-protection safety requirements.
  • Page 51 Vertiv™ Liebert® CW440 User Guide and System Design EC Fan High Voltage Tests Check fuses. If fuses are okay, perform the following: • Check all connections. • Make sure connections are on the wire strand and not on the wire insulation.
  • Page 52 Vertiv™ Liebert® CW440 User Guide and System Design EC Fan Low Voltage Tests • Check control input at the KL3 connector (Ain1U to GND). Confirm that there is a control voltage present at the KL3 connector. NOTE: Use the GND in the KL3 connector. Do not connect the control ground to the PE in KL1! •...

  • Page 53: Condensate Drain And Condensate Pump System Maintenance

    Vertiv™ Liebert® CW440 User Guide and System Design 12.3 Condensate Drain and Condensate Pump System Maintenance 12.3.1 Condensate Drain Check for and clear obstructions in tubing during routine maintenance. 12.3.2 Condensate Pump WARNING! Risk of electric shock. Can cause serious injury or death. Open all local and remote electric power supply disconnect switches and verify that power is off with a voltmeter before working within any electric connection enclosures.

  • Page 54: Fluid And Piping Maintenance

    It will, however, assume the corrosivity of the coolant fluid from which it is prepared and may become increasingly corrosive with use if not properly inhibited. Vertiv recommends installing 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 55 Water leakage can result in severe property damage and loss of critical data center equipment. Do not locate unit directly above any equipment that could sustain water damage. Vertiv recommends installing monitored leak detection equipment for the unit and supply and return lines. NOTICE Risk of a catastrophic water circuit rupture.
  • Page 56 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank 12 Maintenance...

  • Page 57: Preventive Maintenance Checklist

    Vertiv™ Liebert® CW440 User Guide and System Design 13 Preventive Maintenance Checklist Source: DPN002952, Rev. 4 Inspection Date Job Name Indoor Unit Model # Indoor Unit Serial Number # Room Temperature/Humidity °                     % Ambient Temperature ° Not all units will have all components. To determine your unit’s configuration, compare the...
  • Page 58 Vertiv™ Liebert® CW440 User Guide and System Design Electrical Panel Check fuses. 2. Check contactors for pitting (replace if pitted). 3. Check/re-torque wire connections. Controls Check/verify control operation (Sequence). 2. Check/test changeover device(s) (if equipped). 3. Check/test water detection device(s) (if equipped).

  • Page 59: Appendices

    Vertiv™ Liebert® CW440 User Guide and System Design 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 1-800-543-2378 Liebert® Channel Products 1-800-222-5877 Liebert®...
  • Page 60 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank Appendices...

  • Page 61: Appendix B: Vertiv™ Liebert® Cw440 Seismic Application

    Vertiv™ Liebert® CW440 User Guide and System Design Appendix B: Vertiv™ Liebert® CW440 Seismic Application Electrical wiring, conduit, and/or other connections to the equipment is the responsibility of others. Data and recommendations are supplied in the Submittal Drawings on page 61 . The following table lists the relevant documents by number and title.
  • Page 62 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank...

  • Page 63: Appendix C: Flange Specifications

    Vertiv™ Liebert® CW440 User Guide and System Design Appendix C: Flange Specifications Figure C.1 Flange Detail For use with water. Table C.1 Flange Specifications Wort/Steel Flange Shape Straight Type 2 piece wrot/epoxy floating flange Class 150 lb. Connection type Copper tubing...
  • Page 64 Vertiv™ Liebert® CW440 User Guide and System Design Table C.1 Flange Specifications (continued) For Fitting Schedule 40 Copper Body: Lead Free Uns C12200 Steel Base: ASTM A36 Steel Plate Material Steel Base Coating: Dielectric Insulting Epoxy Coating Specifications Met ASME B26.22...

  • Page 65: Appendix D: Submittal Drawings

    Vertiv™ Liebert® CW440 User Guide and System Design Appendix D: Submittal Drawings Submittal drawings are listed below in order of appearance. Table D.1 Submittal Drawings Document Number Title Component Locations 10020389 Component Location Diagram CW440 Dimension Planning Drawings—Downflow Units with EC Fans...
  • Page 66 Vertiv™ Liebert® CW440 User Guide and System Design This page intentionally left blank...
  • Page 67 LIEBERT® CW COMPONENT LOCATION DIAGRAM CW440 1. Liebert® iCOM™ Control Display 2. Electric Box 3. Filters 4. Coil 5. Disconnect 6. EC Fans Customer Flange Connection shown, Brazed (Spun Closed) or Grooved Connections also available when ordered. Note: 1. Plenum and fan section ship separately.

  • Page 68: Top View

    LIEBERT® CW CABINET DIMENSIONAL DATA CW440 & FILTER PLENUM (plenum shipped separately) 163" 4140mm OPENING Note: 1. Filters are accessible through front of unit only. 2. Electrical connections 56" 60" 1422mm 1524mm can be made from top 58" OPENING or bottom of unit. 1473mm 5/16"...
  • Page 69 LIEBERT® CW FAN SECTION DIMENSIONAL DATA CW440 MODEL Dry Weight lbs. (kg) 2454 (1113) Piping access area (See Note 5) TOP VIEW 60" 1524mm 180" 4572mm OVERALL 43" 1092mm RIGHT SIDE 38 1/4" 38 1/4" 38 1/4" 38 1/4" 10" 972mm 972mm 972mm...

  • Page 70: Rear View

    LIEBERT® CW OPTIONAL DUCTED REAR CONNECTION CW440 MODEL Rear View 1 7/8" 176 1/4" 48mm 4477mm Top View 2 9/16" 65mm Piping Section 27 5/16" 694mm 1 3/4" Rear View 44mm Fans Removed For Clarity Notes: 1. Because Piping Section may appear at either end of unit dimensions shown may be reversed depending on configuration ordered.
  • Page 71 LIEBERT® CW ELECTRICAL FIELD CONNECTION DEFINITIONS AND LOCATIONS CW440 DOWNFLOW MODELS STANDARD ELECTRICAL CONNECTIONS Primary high voltage entrance - 2.50” (64mm); 1.75” (44mm) @ EP Box; 1.375” (35mm) diameter concentric knockouts located at the top of the right side of the high voltage section Primary low voltage entrance - Quantity (3) 1.375”...
  • Page 72 LIEBERT® CW ELECTRICAL FIELD CONNECTION DEFINITIONS AND LOCATIONS CW440 DOWNFLOW MODELS Control fuses Condensate Pump fuses Terminal Block TB3 21 Plug P74 RS485 Interface Board Main Fan 20 Plug P64 fuses Liebert® iCOM™ Board High Temp Stat Filter Clog Switch Air Safety Switch T2 &...
  • Page 73 LIEBERT® CW ELECTRICAL FIELD CONNECTION DEFINITIONS AND LOCATIONS CW440 DOWNFLOW MODELS Field Fan Section Connections Fan Section RS485 Connection Fan Section High Voltage Connections DPN005078 REV : 1 Page :3 /3 REV DATE : 9/20...
  • Page 74 PRIMARY CONNECTION LOCATIONS CW440 WITH FLANGED FIELD CONNECTIONS Notes: 1 All views shown in standard configuration. Liebert CW440 can be ordered with piping and electrical connection locations located on right end of unit with fan sections adjusted as required. 2. All "X" & "Y" dimensions are from front right corner of unit as shown.
  • Page 75 LIEBERT® CW SEISMIC DATA ANCHORAGE FOR CW440D IMPORTANT SEISMIC REQUIREMENTS COMPLIANCE NOTE: Values presented in this document are provided for unit anchorage sizing and do not imply compliance to IBC, ASCE, or OSHPD seismic requirements. The CW440 has not been tested and certified. The anchorage loads are provided as guidelines for the sizing of anchors for the attachment of the unit to the building structure or housekeeping pad.
  • Page 76 SECTION A-A 1. Anchor Bolt sized per Hilti Kwik Bolt TZ Carbon and Stainless in Concrete, ICC ESR-1917. Alternates are subject to review by Vertiv or Engineer of Record. 2. Specified by Engineer of Record. 3. Operating mass includes the operating refrigerant, water volume, floor stand and plenum.

  • Page 77: Section A-A Coil To Fan Welds

    LIEBERT® CW SEISMIC DATA ANCHORAGE FOR CW440D SECTION WELDING DIMENSIONS FRAME TUBE (OUTSIDE FACE) GASKET WELD Welded Connection (Typ.) TYPICAL 3/16 (5mm) Section B-B Filter to Coil Welds Section A-A Coil to Fan Welds Notes: 1. Gasket material is added to the inner most top mating edge of each section prior to stacking. 2.

  • Page 78: Way Valve

    Shut 2-Way Chilled Water Valve Valves* 2-WAY VALVE Hose Bibs* FACTORY PIPING FIELD PIPING *Components are not supplied by Vertiv but are required for proper circuit operation and maintenance. DPN003572 REV : 2 Page :1 /1 REV DATE : 9/20...
  • Page 79 Vertiv™ Liebert® CW440 User Guide and System Design...
  • Page 80 Vertiv.com | Vertiv Headquarters, 505 N. Cleveland Ave., Westerville, OH 43082, USA © 2025 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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