Liebert® CW™ Installer/User Guide - Vertiv€¦ · Liebert® CW™Thermal Management System Installer/UserGuide 305 kW,375 kW,415 kWCapacity,50/60 Hz

Liebert®CW™ Thermal Management System

Installer/User Guide305 kW, 375 kW, 415 kW Capacity, 50/60 Hz

Vertiv | Liebert® CW™ Installer/User Guide

Technical Support Site

If you encounter any installation or operational issues with your product, check the pertinentsection of this manual to see if the issue can be resolved by following outlined procedures.Visit https://www.Vertiv.com/en-us/support/ for additional assistance.

The information contained in this document is subject to changewithout notice and may not be suitable for all applications. Whileevery precaution has been taken to ensure the accuracy andcompleteness of this document, Vertiv assumes no responsibilityand disclaims all liability for damages resulting from use of thisinformation or for any errors or omissions. Refer to other localpractices or building codes as applicable for the correct methods,tools, and materials to be used in performing procedures notspecifically described in this document.

The products covered by this instruction manual are manufacturedand/or sold by Vertiv. This document is the property of Vertiv andcontains confidential and proprietary information owned by Vertiv.Any copying, use or disclosure of it without the written permissionof Vertiv is strictly prohibited.

Names of companies and products are trademarks or registeredtrademarks of the respective companies. Any questions regardingusage of trademark names should be directed to the originalmanufacturer.

https://www.vertiv.com/en-us/support/

TABLE OF CONTENTS

Important Safety Instructions 1

1 Nomenclature and Components 7

1.1 Liebert CW Model-number Nomenclature 7

1.2 Component Location 10

2 Pre-installation Preparation and Guidelines 11

2.1 Planning Dimensions 11

2.2 Connections and System Setup 12

2.3 Operating Conditions 12

2.3.1 Cooling, Dehumidification and Humidification 12

2.3.2 Humidification Control 12

2.4 Shipping Dimensions and Unit Weights 12

3 Equipment Inspection and Handling 13

3.1 Packaging Material 14

3.2 Handling the Unit while Packaged 14

3.3 Unpacking the Unit 15

3.4 Removing the Unit from the Skid 16

4 Electrical Connections 21

5 Piping Requirements 23

5.1 Drain Fluid Connections 24

5.1.1 Field-installed, Gravity-fed Drain Line Requirements 24

5.1.2 Condensate-pump Drain Line Requirements 25

5.2 Chilled-water Loop Piping Guidelines 25

5.2.1 Leak Checking for Unit and Field-installed Piping 27

6 Checklist for Completed Installation 29

6.1 Moving and Placing Equipment 29

6.2 Electrical Installation Checks 29

6.3 Piping Installation Checks 29

6.4 Other Installation Checks 29

7 Initial Start-up Checks and Commissioning Procedure For Warranty Inspection 31

8 Maintenance 33

8.1 Filters 34

8.1.1 Replacing the Filters 35

8.2 Fan Maintenance 36

8.2.1 Fan Assembly Troubleshooting 36

8.2.2 Fan Impellers 37

8.2.3 Blower-motor Lubrication 37

8.2.4 Removing Fan Assembly 38

8.3 Condensate-drain and Condensate-pump System Maintenance 38

8.3.1 Condensate Drain 38

8.3.2 Condensate Pump 38

Vertiv | Liebert® CW™ Installer/User Guide | iii

9 Preventive Maintenance Checklist 39

Appendices 43

Appendix A: Technical Support and Contacts 43

Appendix B: Submittal Drawings 45

Vertiv | Liebert® CW™ Installer/User Guide | iv

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important safety instructions that should be followed during the installation andmaintenance of the Liebert® CW. Read this manual thoroughly before attempting to install or operate thisunit.

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

Adhere to all warnings, cautions, notices and installation, operating and safety instructions on the unitand in this manual. Follow all installation, operation and maintenance instructions and all applicablenational and local building, electrical and plumbing codes.

WARNING! Arc flash and electric shock hazard. Open all local and remote electric power-supplydisconnect switches, verify with a voltmeter that power is Off and wear appropriate,OSHA-approved personal protective equipment (PPE) per NFPA 70E before working within theelectric control enclosure. Failure to comply can cause serious injury or death. Customer mustprovide earth ground to unit, per NEC, CEC and local codes, as applicable. Before proceedingwith installation, read all instructions, verify that all the parts are included and check thenameplate to be sure the voltage matches available utility power. The Liebert® controller doesnot isolate power from the unit, even in the “Unit Off” mode. Some internal components requireand receive power even during the “Unit Off” mode of the controller. The only way to ensurethat there is NO voltage inside the unit is to install and open a remote disconnect switch. Referto unit electrical schematic. Follow all local codes.

WARNING! Risk of electric shock. Can cause equipment damage, injury or death. Open all localand remote electric power supply disconnect switches and verify with a voltmeter that power isoff before working within any electric connection enclosures. Service and maintenance workmust be performed only by properly trained and qualified personnel and in accordance withapplicable regulations and manufacturers’ specifications. Opening or removing the covers toany equipment may expose personnel to lethal voltages within the unit even when it isapparently not operating and the input wiring is disconnected from the electrical source.

WARNING! Risk of electric shock. Can cause serious injury or death. The Liebert® iCOMmicroprocessor does not isolate power from the unit, even in the "Unit Off" mode. Some internalcomponents require and receive power even during the "unit off" mode of the Liebert® iCOMcontrol. Open all local and remote electric power disconnect switches and verify with avoltmeter that power is Off before working on any component of the system.


WARNING! Risk of electric shock. Can cause serious injury or death. Open all local and remoteelectric power supply disconnect switches and verify with a voltmeter that power is off beforeworking within the fan-motor electric-connection enclosures. Fan-motor controls can maintainan electric charge for 10minutes after power is disconnected. Wait 10minutes after power isverified as off before working within the electric control/connection enclosures. Use only fully-trained and qualified HVAC technicians to perform maintenance on the fans.

WARNING! Risk of improper moving. Can cause equipment damage, injury or death. Use onlylifting equipment that is rated for the unit weight by an OSHA-certified rating organization. Thecenter of gravity varies depending on the unit size and selected options. The slings must beequally spaced on either side of the center of gravity indicator.Shipping weights and unit weights are listed in the tables in Shipping Dimensions and UnitWeights on page 12. Use the center of gravity indicators on the unit to determine the position ofthe slings.

WARNING! Risk of improper wiring, piping, moving, lifting and handling. Can cause equipmentdamage, serious injury or death. Installation and service of this equipment should be done onlyby qualified personnel who have been specially-trained in the installation of air-conditioningequipment and who are wearing appropriate, OSHA-approved PPE.

WARNING! Risk of improper piping installation, leak checking, fluid chemistry and fluidmaintenance can cause equipment damage and personal injury. Installation and service of thisequipment should be done only by qualified personnel who have been specially-trained in theinstallation of air-conditioning equipment and who are wearing appropriate, OSHA-approvedPPE.

WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury ordeath. Open all local and remote electric power-supply disconnect switches, verify with avoltmeter that power is off, and verify that all fan blades have stopped rotating before workingin the unit cabinet or on the fan assembly. If control voltage is applied, the fan motor can restartwithout warning after a power failure. Do not operate the unit with any or all cabinet panelsremoved.

WARNING! Risk of top-heavy unit falling over. Improper handling can cause equipmentdamage, injury or death. Read all of the following instructions and verify that all lifting andmoving equipment is rated for the weight of the unit before attempting to move, lift, removepackaging from or prepare the unit for installation.

Vertiv | Liebert® CW™ Installer/User Guide2

WARNING! Risk of improper wire sizing/rating and loose electrical connections. Can causeoverheated wire and electrical connection terminals resulting in smoke, fire, equipment andbuilding damage, injury or death. Use correctly sized copper wire only and verify that allelectrical connections are tight before turning power On. Check all electrical connectionsperiodically and tighten as necessary.

CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can causeinjury. Only properly trained and qualified personnel wearing appropriate, OSHA-approved PPEshould attempt to move, lift, remove packaging from or prepare the unit for installation.

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 than70 dB(A) may arise. Take appropriate technical safetymeasures. Operating personnel mustwear appropriate, OSHA-approved PPE and observe all appropriate hearing-protection safetyrequirements.

CAUTION: Risk of contact with hot surfaces. Can cause injury. The fan motor, and someelectrical components are extremely hot during unit operation. Allow sufficient time for them tocool to a touch-safe temperature before working within the unit cabinet. Use extreme cautionand wear appropriate, OSHA-approved PPE when working on or near hot components.

CAUTION: Risk of smoke generation. Can cause fire suppression and alarm system activation,resulting in injury during building evacuation and mobilization of emergency fire and rescueservices. Start-up operation of optional electric reheat elements can create smoke or fumesthat can activate the facility alarm and fire suppression system. Prepare and take appropriatesteps to manage this possibility. Before beginning initial start-up checks, make certain that unitwas installed according to the instructions in this manual. All exterior panels must be in place.

NOTICE

Risk of improper power-supply connection. Can cause equipment damage and loss of warrantycoverage.

Prior to connecting any equipment to a main or alternate power source (for example: back-upgenerator systems) for start-up, commissioning, testing, or normal operation, ensure that thesesources are correctly adjusted to the nameplate voltage and frequency of all equipment to beconnected. In general, power-source voltages should be stabilized and regulated to within±10% of the load nameplate nominal voltage. Also, ensure that no three-phase sources aresingle-phased at any time.


NOTICE

Risk of piping-system corrosion and freezing fluids. Can cause leaks resulting in equipmentand very expensive building damage. Cooling coils and piping systems are at high risk offreezing and premature corrosion. Fluids in these systems must contain the proper antifreezeand inhibitors to prevent freezing and premature coil and piping corrosion. The water orwater/glycol solution must be analyzed by a competent local water treatment specialist beforestart up to establish the inhibitor and antifreeze solution requirement and at regularlyscheduled intervals throughout the life of the system to determine the pattern of inhibitordepletion.

The complexity of water/glycol solution condition problems and the variations of requiredtreatment programs make it extremely important to obtain the advice of a competent andexperienced water treatment specialist and follow a regularly scheduled coolant fluid systemmaintenance program.

Water chemistry varies greatly by location, as do the required additives, called inhibitors, thatreduce the corrosive effect of the fluids on the piping systems and components. The chemistryof the water used must be considered, because water from some sources may contain corrosiveelements that reduce the effectiveness of the inhibited formulation. Sediment deposits preventthe formation of a protective oxide layer on the inside of the coolant system components andpiping. The water/coolant fluid must be treated and circulating through the systemcontinuously to prevent the buildup of sediment deposits and or growth of sulfate reducingbacteria.

Proper inhibitor maintenance must be performed in order to prevent corrosion of the system.Consult glycol manufacturer for testing and maintenance of inhibitors.

Commercial ethylene glycol, when pure, is generally less corrosive to the common metals ofconstruction than water itself. It will, however, assume the corrosivity of the water from which itis prepared and may become increasingly corrosive with use if not properly inhibited.

We recommend installing a monitored fluid-detection system that is wired to activate theautomatic-closure of field-installed coolant-fluid supply and return shut-off valves to reducethe amount of coolant-fluid leakage and consequential equipment and building damage. Theshut-off valves must be sized to close-off against the maximum coolant-fluid system pressurein case of a catastrophic fluid leak.

NOTICE

Risk of frozen pipes and corrosion from improper coolant mixture. Can cause water leaksresulting in equipment and building damage.

When the cooling unit or piping may be exposed to freezing temperatures, charge the systemwith the proper percentage of glycol and water for the coldest design ambient temperature.Automotive antifreeze is unacceptable and must NOT be used in any glycol fluid system. Useonly HVAC glycol solution that meets the requirements of recommended industry practices.Do not use galvanized pipe.


NOTICE

Risk of no-flow condition. Can cause equipment damage. Do not leave the water/coolant fluid-supply circuit in a no-flow condition. Idle fluid allows the collection of sediment that preventsthe formation of a protective oxide layer on the inside of tubes. Keep unit switched On andwater/coolant fluid-supply circuit system operating continuously.

NOTICE

Risk of clogged or leaking drain lines and leaking water-supply lines. Can cause equipment andbuilding damage.

This unit requires a water drain connection. Drain lines must be inspected at start-up andperiodically, and maintenance must be performed to ensure that drain water runs freelythrough the drain system and that lines are clear and free of obstructions and in goodcondition with no visible sign of damage or leaks.

Improper installation, application and service practices can result in water leakage from theunit. Water leakage can result in catastrophic and expensive building and equipment damageand loss of critical data center equipment.

Do not locate unit directly above any equipment that could sustain water damage.

We recommend installing a monitored fluid-detection system to immediately discover andreport coolant-fluid system and condensate drain-line leaks.

NOTICE

Risk of doorway/hallway interference. Can cause unit and/or structure damage. The unit maybe too large to fit through a doorway or hallway while on the skid. Measure the unit andpassageway dimensions, and refer to the installation plans prior to moving the unit to verifyclearances.

NOTICE

Risk of damage from forklift. Can cause unit damage. Keep tines of the forklift level and at aheight suitable to fit below the skid and/or unit to prevent exterior and/or underside damage.

NOTICE

Risk of improper storage. Can cause unit damage.

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



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1 NOMENCLATURE AND COMPONENTSThis section describes the number for Liebert® CW units and components.

1.1 Liebert CW Model-number Nomenclature

The following tables describe each digit of the configuration number. The 14-digit model number consistsof the first 10 digits and last 4 digits of the configuration number.

1 2 3 4 5 6 7 8 9 10

C W 4 1 5 D 1 3 A 1

Table 1.1 CW Model Number Example Digits 1 to 10

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

1 2 0 8 1 0 L 0 0 0 P 0 0 0 0

Table 1.2 CW Configuration-number Detail Digits 11 to 25 Example

26 27 28 29 30 31 32 33 34 35 36

0 0 0 0 0 0 0 0 0 0 0

Table 1.3 CW onfiguration-number Detail Digits 26 to 36

37 38 39 40

# # # A

Table 1.4 CW Model Number Digits 37 to 40 Example

Digit Description

Digits 1 and 2 = Unit Family

CW = Liebert® CW floor-mounted, chilled-water unit

Digit 3, 4, 5 = Nominal Cooling Capacity, kW

305 = 305 kW

375 = 375 kW

415 = 415 kW

Digit 6 = Air Distribution

H = Horizontal discharge

D =Bottom discharge

Digit 7 = Electric Panel Options

1 =Data hall or Bottom discharge, left electric panel

2 = Data hall or Bottom discharge, right electric panel

3 = Gallery, left electric panel

4 = Gallery, right electric panel

Table 1.5 CW Model-number Digit Definitions


Digit Description

Digit 8 = Fan Type

3 = Direct-drive + VFD

T = Direct-drive + VFD + THD

Digit 9 = Voltage

A = 460 V - 3 ph - 60 Hz

B = 575 V - 3 ph - 60 Hz

2= 380 V - 3 ph - 60 Hz

M= 380-415 V - 3 ph - 50 Hz

Digit 10 = Valve Type

1 = 2-way, fail-in-place, 400 PSI

4 = 2-way, fail open, 400 PSI

5 = 2-way, fail closed, 400 PSI

Digit 11 = Agency

1 = CSA

Digit 12 = Display/Microprocessor Control

2 = iCOM (high-definition)

Digit 13 = Humidification

0 = None

Digit 14 = Air Filter

8 = 4-in. MERV 8

9 = 4-in. MERV 11

Digit 15 = Coil

2 = Hydrophilic coated evap coil

Digit 16 = Seismic

0 = None

Digit 17 = High-voltage Options

L = Locking disconnect

S = Dual locking disconnect with reversing starter + Capacitive buffer

Digit 18 = Option packages

0 = None

L = Low-voltage terminal package

R = Remote-humidifier contact

D - Low-voltage terminal package + Remote-humidifier contact

Table 1.5 CW Model-number Digit Definitions (continued)


Digit Description

Digit 19 = Monitoring

B = Base Comms & Connectivity

X = Base Comms + Etherernet +RS485 (SFA)

R = Base Comms +SiteScan RS485 Expansion ( SFA)

Digit 20 = Sensors

0 = None

S = Smoke

H = High-temperature

F = Smoke and High-temperature

Digit 21 = Packaging

P = Domestic

C = Export

Digit 22, 23, 24, 25 = Placeholder

0 = Placeholder

Digit 26 = Power Meter

0 = None

P = Power Meter

Digits 27 and 28 = Placeholder

0 = Placeholder

Digit 29 = Condensate Pump

0 = None

C = Condensate pump

Digit 30 to 36

0 = Placeholder

Digit 37 to 39 = Factory Configuration Number

Digit 40 = Configuration Code

A = No SFA

S = SFA

Table 1.5 CW Model-number Digit Definitions (continued)


1.2 Component Location

The unit component locations are described in the submittal documents included in the SubmittalDrawings on page 45.

The following table lists the relevant documents by number and title.

Document Number Title

DPN004861 Component Location, Horizontal Discharge

DPN004899 Component Location, Bottom Discharge

Table 1.6 Component-location Drawings


2 PRE-INSTALLATION PREPARATION AND GUIDELINESNOTE: Before installing unit, determine whether any building alterations are required to run piping,wiring and duct work. Follow all unit dimensional drawings and refer to the submittal engineeringdimensional drawings of individual units for proper clearances.

Refer to Table 1.5 on page 7, and submittal drawings to determine the type of system being installed andanticipate building alterations, piping and duct work needed.

The unit dimensions, pipe-connection locations, and piping schematics are described in the submittaldocuments included in the Submittal Drawings on page 45.

• Verify that the floor is level, solid and sufficient to support the unit. See Table 2.2 on the nextpage,for unit weights.

• Confirm that the room is properly insulated and has a sealed vapor barrier.

• For proper humidity control, keep outside or fresh air to an absolute minimum (less than 5% oftotal air circulated in the room).

• Do not install a Liebert® CW in an alcove or at the end of a long, narrow room.

• Install the units as close as possible to the largest heat load.

• Allow at least the minimum recommended clearances for maintenance and service. See theappropriate submittal drawings for dimensions.

• We recommend installing an under-floor water detection system. Contact your Vertivrepresentative for information.

2.1 Planning Dimensions

The unit, floor stand, and plenum dimensions are described in the submittal documents included in theSubmittal Drawings on page 45.



Downflow Units

DPN004862 Cabinet and Plenum Dimensional Data, Downflow, Horizontal Discharge

DPN004900 Cabinet and Plenum Dimensional Data, Downflow, Bottom Discharge

DPN004870 Installation and Service Clearance Data, Downflow, Horizontal and Bottom Discharge

DPN004869 Floor planning dimensional data for adjacent units

Floor Stands

DPN004866 Floorstand Dimensional Data,

Airflow Schematic

DPN004865 Airflow Schematic, Downflow, Horizontal Discharge

DPN004904 Airflow Schematic, Downflow, Bottom Discharge

Table 2.1 Dimension Planning Drawings

2 Pre-installation Preparation and Guidelines 11

2.2 Connections and System Setup

• The unit requires a drain, which must comply with all applicable codes. This drain line maycontain boiling water. See Field-installed, Gravity-fed Drain Line Requirements on page 24, fordetails.

• The unit requires supply and return water connections, which must comply with all applicablecodes. See Piping Requirements on page 23.

• If seismic requirements apply, consult your Vertiv representative for information about aseismic-rated floor stand.

2.3 Operating Conditions

The Liebert® CW must be operated in a conditioned space within the operating envelope that ASHRAErecommends for data centers. Operating the CW outside of this envelope can decrease equipmentreliability. Refer to ASHRAE’s publication, “Thermal Guidelines for Data Processing Environments.”

The recommended maximum for return-air temperature is 105°F (40°C) and maximum dew point is 59°F(15°C). The recommended minimum return-air temperature setpoint for the CW is 85°F (29.4°C).

2.3.1 Cooling, Dehumidification and Humidification

Return air to the unit must be no cooler than the ASHRAE recommendation of 68°F (20°C) DB and 40%RH or minimum WB of 54°F (12.2°C) for proper unit operation. Operating below this can decreaseequipment reliability.

2.3.2 Humidification Control

The humidifier option is not available on the CW305, CW375, CW415. A remote humidifier contact isavailable for a stand-alone humidifier.

2.4 Shipping Dimensions and Unit Weights

Model#

Domestic Packaging Export Packaging

DryWeight, lb (kg)Ship Weight, lb

(kg)Shipping Dimensions, in.

(mm)Ship Weight, lb

(kg)Shipping Dimensions, in.

(mm)

CW305CW375CW415

3890 (1764)70 x 154 x 96.8

(1778 x 3911 x 2458)4230 (1919)

70.5 x 154.5 x 99(1790 x 3924 x 2514)

3300 (1497)

Fansection

3000 (1361)90 x 128 x 54

(2286 x 3251 x 1372)3370 (1528)

90.5 x 128.5 x 99(2299 x 3264 x 2515)

2300 (1043)

Table 2.2 Downflow unit domestic and export shipping dimensions and weights


3 EQUIPMENT INSPECTION AND HANDLINGSAFETY INFORMATION

WARNING! Risk of top-heavy unit falling over. Improper handling can cause equipmentdamage, injury or death. Read all of the following instructions and verify that all lifting andmoving equipment is rated for the weight of the unit before attempting to move, lift, removepackaging from or prepare the unit for installation. Unit weights are specified in Table 2.2 onpage 12.

WARNING! Risk of improper moving. Can cause equipment damage, injury or death. Use onlylifting equipment that is rated for the unit weight by an OSHA-certified rating organization. Thecenter of gravity varies depending on the unit size and selected options. The slings must beequally spaced on either side of the center of gravity indicator.Shipping weights and unit weights are listed in the tables in Table 2.2 on page 12. Use thecenter of gravity indicators on the unit to determine the position of the slings.

CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can causeinjury. Only properly trained and qualified personnel wearing appropriate, OSHA-approved PPEshould attempt to move, lift, remove packaging from or prepare the unit for installation.

NOTICE

Risk of passageway interference. Can cause unit and/or structure damage. The unit may betoo large to fit through a passageway while on or off the skid. Measure the unit and passagewaydimensions, and refer to the installation plans prior to moving the unit to verify clearances.

NOTICE

Risk of damage from forklift. Can cause unit damage. Keep tines of the forklift level and at aheight suitable to fit below the skid and/or unit to prevent exterior and/or underside damage.

NOTICE

Risk of improper storage. Keep the unit upright, indoors and protected from dampness,freezing temperatures and contact damage.

Upon arrival of the unit and before unpacking:

• Verify that the labeled equipment matches the bill of lading.

• 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 orto your sales representative.


Equipment Recommended for Handling the Unit:

• Forklift

• Slings

• Spreader bars

• Beam trolleys

• Chain hoists

• Gantries

3.1 Packaging Material

All material used to package this unit is recyclable. Please save for future use or dispose of thematerial appropriately.

3.2 Handling the Unit while Packaged

If possible, transport the unit with a forklift or pallet jack. If that is not possible, use a crane with slings andspreader bars that are rated for the weight of the unit.

When using a forklift or pallet jack:

• Ensure that the fork length is suitable for the unit length and, if adjustable, spread to thewidest allowable distance that will fit under the skid.

• When moving the packaged unit, lift the unit from the end with the indicated labeling, and donot lift the unit any higher than 4 in. (102 mm). Ensure that the opposite end of the skid stilltouches the floor. The unit must be pulled by the forklift. All personnel except those movingthe unit must be kept 12 ft (3.7 m) or more from the unit while it is being moved.

• If the unit must be lifted higher than 4 in. (102 mm), all personnel not directly involved inmoving the unit must be 20 ft (5 m) or farther from the unit.

• Always refer to the location of the center-of-gravity indicators when lifting the unit, see Figure3.1 below.

Figure 3.1 Center-of-gravity indicator


3.3 Unpacking the Unit

1. Refer to 3.3 above:

• On units with domestic packaging, remove the exterior stretch wrap packaging fromaround the unit and any protective corner and side packaging planks.

• On units with export packaging, remove the metal spring clips that secure the top andside panels of the crate. Then remove the exterior stretch wrap packaging from aroundthe unit and any protective corner and side packaging planks.

Figure 3.2 Unpacking the Unit

Item Description

1 Domestic packaging

2 Export packaging


3.4 Removing the Unit from the Skid

NOTE: If you do not follow these steps, damage could occur to the panels and/or base of the unit.

1. Referring to Figure 3.3 below, use a 9/16-in. socket driver to remove the lag screws (24 total)from the 4 corner brackets to detach the unit from the skid.

Figure 3.3 Remove corner brackets


2. Using the provided rigging-fastener kit and the instructions included in the kit, install therigging hardware for lifting the unit from the skid. Figure 3.4 below, shows an example of oneof the eye nuts installed.

Figure 3.4 Rigging-fastener eye nut installed


3. Attach the recommended rigging equipment to the eye-nuts installed in Step 2.

4. Using the rigging equipment, lift the unit from the skid, and remove the skid from under theunit, see Figure 3.5 below.

Figure 3.5 Lifting unit and removing skid


5. Use the rigging equipment to move the unit to the final installation location, see Figure 3.6below.

Figure 3.6 Moving the unit with rigging




4 ELECTRICAL CONNECTIONSThree-phase electrical service is required for all models. Electrical service must conform to national andlocal electrical codes. Refer to equipment nameplate regarding wire size and circuit protectionrequirements. Refer to electrical schematic when making connections. Refer the appropriate submittaldrawing, listed in Table 4.1 on the next page, for electrical service entrances into unit.

A manual electrical disconnect switch should be installed in accordance with local codes and distributionsystem. Consult local codes for external disconnect requirements.



WARNING! Risk of improper wire sizing/rating and loose electrical connections. Can causeoverheated wire and electrical connection terminals resulting in smoke, fire, equipment andbuilding damage, injury or death. Use correctly sized copper wire only and verify that allelectrical connections are tight before turning power On. Check all electrical connectionsperiodically and tighten as necessary.

NOTICE



See transformer label for primary tap connections. Installer will need to change transformerprimary taps if applied unit voltage is other than pre-wired tap voltage.

4 Electrical Connections 21

The electrical and unit-to-unit connections are described in the submittal documents included in theSubmittal Drawings on page 45.



DPN004864 Electrical Field Connections, Downflow, CW305, 375, 415

DPN004863Connection Locations, Data Hall with horizontal-discharge, Front-left facingelectrical/piping compartment

DPN004901Connection Locations, Bottom-discharge, Front-right facing electrical/pipingcompartment

DPN004923Connection Locations, Data Hall with horizontal-discharge, Front-right facingelectrical/piping compartment

DPN004903 Connection Locations, Bottom-discharge, Front-left facing electrical/piping compartment

DPN004924Connection Locations, Gallery with horizontal-discharge, Front-right facing electrical/pipingcompartment


Unit-to-Unit Networking

DPN004351 Liebert® iCOM Unit-to-unit Network Connections

Table 4.1 Electrical Field-connection Drawings


5 PIPING REQUIREMENTSAll fluid connections to the unit, with the exception of the condensate drain, are sweat copper. Factory-installed piping brackets must not be removed. Field-installed piping must be installed in accordance withlocal codes and must be properly assembled, supported, isolated and insulated. Avoid piping runsthrough noise-sensitive areas, such as office walls and conference rooms.

Refer to specific text and detailed diagrams in this manual for other unit-specific piping requirements.

All piping below the elevated floor must be located so that it offers the least resistance to air flow. Carefulplanning of the piping layout under the raised floor is required to prevent the air flow from being blocked.When installing piping on the subfloor, we recommend that the pipes be mounted in a horizontal planerather than stacked one above the other. Whenever possible, the pipes should be run parallel to the airflow.

The pipe connection locations, piping general arrangement and schematics are described in thesubmittal documents included in the Submittal Drawings on page 45.

The following tables list the relevant documents by number and title.


DPN004952 Piping Schematic, Downflow, CW305, 375, 415

Table 5.1 Piping General-arrangment Drawings








Table 5.2 Piping Connection Drawings


5.1 Drain Fluid Connections

NOTICE

Risk of water leakage. Can cause severe property damage and loss of critical data centerequipment.

The Liebert® CW requires a water drain connection. Improper installation, application andservice practices can result in water leakage from the unit.

Do not locate the unit directly above any equipment that could sustain water damage.

We recommend installing monitored leak detection equipment for the water supply lines andthe internal unit water lines.

The following pipe connections are required:

• A drain line from the unit.

• Supply and return water lines.

5.1.1 Field-installed, Gravity-fed Drain Line Requirements

NOTICE

Risk of water backing up in the drain line. Leaking and overflowing water can cause equipmentand building damage.

Install an external, 5-1/2 in. trap in the drain line (if desired). The factory unit does not contain atrap.

Sagging condensate drain lines may inadvertently create an external trap.

Observe the following requirements when installing and routing the drain line:

• The drain line must be sized for 2 gpm (7.6 l/m) flow.

• The drain line must be located so it will not be exposed to freezing temperatures.

• The drain should be the full size of the drain connection.

• The drain line must slope continuously away from the unit. Pitch drain line toward drain aminimum of 1/8 in. (3 mm) per 1 ft (305 mm) of length.

• The drain line must be rigid enough that it does not sag between supports, whichunintentionally creates traps.

• The drain line must comply with all applicable codes.

• We recommend installing monitored, under-floor leak-detection equipment.


5.1.2 Condensate-pump Drain Line Requirements

NOTICE

Risk of water backing up in the drain line. Leaking and overflowing water can cause equipmentand building damage.

Sagging condensate drain lines may inadvertently create an external trap.

Observe the following requirements when installing and routing the drain line:

• The drain line must be located so it will not be exposed to freezing temperatures.

• Size the piping based on the available condensate head.

• The drain line must be rigid enough that it does not sag between supports, whichunintentionally creates traps.

• We recommend installing monitored, under-floor leak-detection equipment.

5.2 Chilled-water Loop Piping Guidelines

WARNING! Risk of improper piping installation, leak checking, fluid chemistry and fluidmaintenance can cause equipment damage and personal injury. Installation and service of thisequipment should be done only by qualified personnel who have been specially-trained in theinstallation of air-conditioning equipment and who are wearing appropriate, OSHA-approvedPPE.

NOTICE

Risk of frozen pipes and corrosion from improper coolant mixture. Can cause water leaksresulting in equipment and building damage.

When the cooling unit or piping may be exposed to freezing temperatures, charge the systemwith the proper percentage of glycol and water for the coldest design ambient temperature.Automotive antifreeze is unacceptable and must NOT be used in any glycol fluid system. Useonly HVAC glycol solution that meets the requirements of recommended industry practices.Do not use galvanized pipe.

NOTICE

Risk of piping-system corrosion and freezing fluids. Can cause leaks resulting in equipmentand very expensive building damage. Cooling coils and piping systems are at high risk offreezing and premature corrosion. Fluids in these systems must contain the proper antifreezeand inhibitors to prevent freezing and premature coil and piping corrosion. The water orwater/glycol solution must be analyzed by a competent local water treatment specialist beforestart up to establish the inhibitor and antifreeze solution requirement and at regularlyscheduled intervals throughout the life of the system to determine the pattern of inhibitordepletion.

The complexity of water/glycol solution condition problems and the variations of requiredtreatment programs make it extremely important to obtain the advice of a competent andexperienced water treatment specialist and follow a regularly scheduled coolant fluid systemmaintenance program.


Water chemistry varies greatly by location, as do the required additives, called inhibitors, thatreduce the corrosive effect of the fluids on the piping systems and components. The chemistryof the water used must be considered, because water from some sources may contain corrosiveelements that reduce the effectiveness of the inhibited formulation. Sediment deposits preventthe formation of a protective oxide layer on the inside of the coolant system components andpiping. The water/coolant fluid must be treated and circulating through the systemcontinuously to prevent the buildup of sediment deposits and or growth of sulfate reducingbacteria.

Proper inhibitor maintenance must be performed in order to prevent corrosion of the system.Consult glycol manufacturer for testing and maintenance of inhibitors.

Commercial ethylene glycol, when pure, is generally less corrosive to the common metals ofconstruction than water itself. It will, however, assume the corrosivity of the water from which itis prepared and may become increasingly corrosive with use if not properly inhibited.

We recommend installing a monitored fluid-detection system that is wired to activate theautomatic-closure of field-installed coolant-fluid supply and return shut-off valves to reducethe amount of coolant-fluid leakage and consequential equipment and building damage. Theshut-off valves must be sized to close-off against the maximum coolant-fluid system pressurein case of a catastrophic fluid leak.

NOTICE

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

Do not leave the water/coolant fluid-supply circuit in a no-flow condition. Idle fluid allows thecollection of sediment that prevents the formation of a protective oxide layer on the inside oftubes. Keep unit switched On and water/coolant fluid-supply circuit system operatingcontinuously.

Refer to the appropriate piping general-arrangement schematics for your system for the recommended,field-installed hardware such as shut-off valves. See Table 5.1 on page 23.

• Use copper piping with a brazing alloy with a minimum temperature of 1350°F (732°C), such asSil-Fos. Avoid soft solders, such as 50/50 or 95/5.

• Follow local piping codes and safety codes.

• Qualified personnel must install and inspect system piping.

• The water/glycol-cooled system will operate in conjunction with a cooling tower, city water ordrycooler.

• Contact a local water consultant regarding water quality, corrosion protection and freeze-protection requirements.

• Install manual shut-off valves at the supply and return line to each unit to permit routineservice and emergency isolation of the unit.

• Install a monitored, fluid-detection system that is wired to activate the automatic closure offield-installed coolant-fluid supply and return shut-off valves to reduce the amount of coolantfluid leakage and consequential equipment and building damage. The shut-off valves must besized to close-off against the maximum coolant-fluid system pressure in case of a catastrophicfluid leak.


5.2.1 Leak Checking for Unit and Field-installed Piping

The fluid systems in the Liebert® CW are factory-checked for leaks and may be shipped with holdingcharge. At installation, check all fluid circuits for leaks.

NOTE: We recommend isolating the unit with field-installed shutoff valves during leak checking offield-installed piping. When the units are included in a leak test, use of fluid for pressure testing isrecommended. When pressurized gas is used for leak testing the unit, the maximum recommendedpressure is 30 psig (207 kPa) and tightness of the unit should be verified by pressure decay over time,(<2 psig/hour [13.8 kPa/hour]) or sensing a tracer gas with suitable instrumentation. Dry seals in fluidvalves and pumps may not hold a high gas pressure.




6 CHECKLIST FOR COMPLETED INSTALLATION

6.1 Moving and Placing Equipment

1. 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.

6.2 Electrical Installation Checks

1. Supply voltage and phase matches equipment nameplate.

2. Power wiring connections completed to the disconnect switch and unit.

3. Power line circuit breakers or fuses have proper ratings for equipment installed.

4. All internal and external high- and low-voltage wiring connections are tight.

5. Confirm that unit is properly grounded to an earth ground.

6. Control transformer setting matches incoming power.

7. Electrical service conforms to national and local codes.

8. Check blowers for proper rotation.

6.3 Piping Installation Checks

1. Piping completed to coolant loop.

2. Piping has been leak-checked.

3. Piping has been flushed to clear debris, pipe dope, and contaminants.

4. Piping is properly sized.

5. Check piping inside and outside of equipment for proper support and adequate spacing toprevent rub-through.

6. Ensure that factory clamps have been reinstalled.

7. Drain line connected, not obstructed, and pitched per local code.

8. Condensate drain connected.

6.4 Other Installation Checks

1. Ducting complete.

2. Filters installed.

3. Check fasteners that secure motors—some may have become loose during shipment.

4. All fans are free of debris.

6 Checklist for Completed Installation 29



7 INITIAL START-UP CHECKSAND COMMISSIONING PROCEDUREFOR WARRANTY INSPECTION



CAUTION: Risk of smoke generation. Can cause fire suppression and alarm system activation,resulting in injury during building evacuation and mobilization of emergency fire and rescueservices. Start-up operation of optional electric reheat elements can create smoke or fumesthat can activate the facility alarm and fire suppression system. Prepare and take appropriatesteps to manage this possibility. Before beginning initial start-up checks, make certain that unitwas installed according to the instructions in this manual. All exterior panels must be in place.

• Confirm that all items on Checklist for Completed Installation on page 29 have been done.

• Locate “Liebert® CW Warranty Inspection Check Sheet” in the unit’s electric panel.

• Complete “Liebert® CW Warranty Inspection Check Sheet” during start-up.

• Forward the completed “Liebert® CW Warranty Inspection Check Sheet” to your local salesoffice. This information must be completed and forwarded to validate warranty.

• Contact your local sales representative or technical support if you have any questions orproblems during unit start-up and commissioning. Visit https://www.Vertiv.com/en-us/support/or call 1-800-222-5877 for contacts.

7 Initial Start-up Checks and Commissioning Procedure For Warranty Inspection 31



8 MAINTENANCE


WARNING! Risk of electric shock. Can cause equipment damage, injury or death. Open all localand remote electric power supply disconnect switches and verify with a voltmeter that power isoff before working within any electric connection enclosures. Service and maintenance workmust be performed only by properly trained and qualified personnel and in accordance withapplicable regulations and manufacturers’ specifications. Opening or removing the covers toany equipment may expose personnel to lethal voltages within the unit even when it isapparently not operating and the input wiring is disconnected from the electrical source.


WARNING! Risk of electric shock. Can cause serious injury or death. The Liebert® iCOMmicroprocessor does not isolate power from the unit, even in the "Unit Off" mode. Some internalcomponents require and receive power even during the "unit off" mode of the Liebert® iCOMcontrol. Open all local and remote electric power disconnect switches and verify with avoltmeter that power is Off before working on any component of the system.

8 Maintenance 33

The Liebert® CW is a single component in the facility heat-removal system. The system includes airdistribution (raised floors, duct systems), outdoor heat rejection (pumps) and indoor cooling and humidityloads (equipment load, location, outside air infiltration). Proper application and maintenance of the entiresystem is critical to the life and reliability of the thermal-management units.

• Good maintenance practices are essential to minimizing operation costs and maximizingproduct life.

• Read and follow monthly and semi-annual maintenance schedules included in this manual.These MINIMUM maintenance intervals may need to be more frequent based on site-specificconditions.

• See the Liebert®iCOM™ user manual, SL-31075, available at www.Vertiv.com, for instructions onusing the controller to predict some service maintenance intervals.

• We recommend the use of trained and authorized service personnel, extended servicecontracts and factory-specified replacement parts. Contact your Vertiv sales representative.

8.1 Filters

NOTICE

Risk of improper filter installation. Can cause filter collapse and airflow reduction.

To maximize the performance and reliability of the equipment, use only Vertiv filters. Contact your Vertivrepresentative to order replacement filters.

Verify that filters are installed and positioned so the air-flow direction marked on the filter is the samedirection as unit air flow.

Unit size Filter TypeFilter Size,

Width x Length x DepthQuantity

CW305, CW375, CW415 MERV 8 28 x 22 x 4 15

Table 8.1 Filter Quantity and Type


8.1.1 Replacing the Filters


1. The filters are accessed through panels on the front side of the plenum at the front of the unit,see Figure 8.1 below.

Figure 8.1 Filter Access

Item Description

1 Front access on the front side of the fan plenum.

8 Maintenance 35

Figure 8.2 Removing and installing the air filters

Item Description

1 Remove and install filters up and down in the columns. There are 3 filters in each column.

8.2 Fan Maintenance

8.2.1 Fan Assembly Troubleshooting

Any safety hazards stemming from the device must be re-evaluated once it is installed in the end device.

Do not make any modifications, additions or conversions to the fan assembly without the approval ofVertiv.

WARNING! Risk of electric shock. Can cause serious injury or death. Open all local and remoteelectric power supply disconnect switches and verify with a voltmeter that power is off beforeworking within the fan-motor electric-connection enclosures. Fan-motor controls can maintainan electric charge for 10minutes after power is disconnected. Wait 10minutes after power isverified as off before working within the electric control/connection enclosures. Use only fully-trained and qualified HVAC technicians to perform maintenance on the fans.



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 than70 dB(A) may arise. Take appropriate technical safetymeasures. Operating personnel mustwear appropriate, OSHA-approved PPE and observe all appropriate hearing-protection safetyrequirements.

CAUTION: Risk of contact with hot surfaces. Can cause injury. The fan motor, and someelectrical components are extremely hot during unit operation. Allow sufficient time for them tocool to a touch-safe temperature before working within the unit cabinet. Use extreme cautionand wear appropriate, OSHA-approved PPE when working on or near hot components.

NOTICE



NOTE: Do not assume that the fan blades will not start to spin. If the motor is in a fault condition, it willsafely shut down. Once the fault condition is cleared, there are certain conditions in which the motorwill automatically resume operation.

8.2.2 Fan Impellers

Fan impellers should be periodically inspected and any debris removed. Check to ensure that theimpellers can rotate freely.

Consult the factory for fan-assembly maintenance and removal instructions. Do not attempt to service orremove the fans without first contacting Vertiv support at 1-800-222-5877.

8.2.3 Blower-motor Lubrication

The motor is initially lubricated at the factory.

• Contact the motor manufacturer for the lubrication interval for motor bearings.

• Contact the motor manufacturer to determine the type of grease to use for lubrication.

8 Maintenance 37

8.2.4 Removing Fan Assembly

Do not attempt to remove the fan assemblies without first contacting Vertiv Technical Support at 1-800-222-5877.

8.3 Condensate-drain and Condensate-pump System Maintenance

8.3.1 Condensate Drain

Check for and clear obstructions in tubing during routine maintenance.

8.3.2 Condensate Pump

WARNING! Risk of electric shock. Can cause injury or death. Open all local and remote electricpower-supply disconnect switches and verify that power is Off with a voltmeter before workingwithin the condensate pump electrical connection enclosure. The Liebert® iCOM™ does notisolate power from the unit, even in the “Unit Off” mode. Some internal components require andreceive power even during the “Unit Off” mode of the Liebert® iCOM.

To maintain the condensate pump:

1. Disconnect power to the unit using the disconnect switch.

2. Check for and clear obstructions in gravity lines leading to the condensate pump.

3. Remove the sump, clean with a stiff nylon brush and flush with water.

4. Inspect and clear clogs in the discharge check valve and float mechanism.

5. Reassemble and check for leaks.


9 PREVENTIVE MAINTENANCE CHECKLISTSource: DPN002952, Rev. 4

Inspection Date Job NameIndoor 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 Indoor UnitModel # above and the information in the Components and Nomenclature section.

Good maintenance practices are essential to minimizing operation cost and maximizing product life. Readand follow all applicable maintenance checks listed below. At a minimum, these checks should beperformed semi-annually. However, maintenance intervals may need to be more frequent based on site-specific conditions. Review the unit user manual for further information on unit operation. We recommendthe use of trained and authorized service personnel, extended service contracts, and factory-certifiedreplacement parts. Contact your local sales representative for more details.

Check all that apply:

Evaporator/Filters

1. Check/Replace filters

2. Grille area unrestricted

3. Wipe section clean

4. Coil clean

5. Clean condensate pan

6. Clean trap in condensate drain

7. Check/Test filter-clog switch operation (if equipped)

Blower Section

1. Blower wheels free of debris

2. Check/Lube bearings

3. Check/Lube motor (if supplied with grease ports). Check motor manufacturer’s web site forprocedure, amount and type of grease required.

4. Check motor mount

5. Check/Test air sail switch

6. Motor amp draw

• Compare to nameplate amps

#1 L1 L2 L3 #2 L1 L2 L3 #3 L1 L2 L3


Condensate Pump (if equipped)

1. Check for debris in sump

2. Check operation of float(s) (free movement)

3. Check/Clean discharge check valve

Electrical Panel

1. Check fuses

2. Check contactors for pitting (Replace if pitted)

3. Check/Re-torque wire connections


MAINTENANCE NOTES

NameSignatureCompany

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 1-800-222-5877.




APPENDICES

Appendix A: Technical Support and Contacts

A.1 Technical Support/Service in the United States

Vertiv™ 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

United States

Vertiv Headquarters

1050 Dearborn Drive

Columbus, OH, 43085, USA

Europe

Via Leonardo Da Vinci 8 Zona Industriale Tognana

35028 Piove Di Sacco (PD) Italy

Asia

7/F, Dah Sing Financial Centre

3108 Gloucester Road

Wanchai, Hong Kong

43



Appendix B: Submittal Drawings

The submittal drawings are in the order of document part number (DPN). Table B.1 below, groups thedrawings by topic/application.


Component Location

DPN004861 Component Location, Horizontal Discharge

DPN004899 Component Location, Bottom Discharge

Planning Dimensions - Downflow Units

DPN004862 Cabinet and Plenum Dimensional Data, Downflow, Horizontal Discharge

DPN004900 Cabinet and Plenum Dimensional Data, Downflow, Bottom Discharge

DPN004870 Installation and Service Clearance Data, Downflow, Horizontal and Bottom Discharge

DPN004869 Floor planning dimensional data for adjacent units

Planning Dimensions - Floor Stands

DPN004866 Floorstand Dimensional Data,

Airflow Schematic

DPN004865 Airflow Schematic, Downflow, Horizontal Discharge

DPN004904 Airflow Schematic, Downflow, Bottom Discharge

Piping Schematics

DPN004952 Piping Schematic, Downflow, CW305, 375, 415

Piping Connections







Table B.1 Submittal-drawings Contents

45


Electrical Connections

DPN004864 Electrical Field Connections, Downflow, CW305, 375, 415







Unit-to-Unit Networking

DPN004351 Liebert® iCOM Unit-to-unit Network Connections

Table B.1 Submittal-drawings Contents (continued)


REV : 2REV DATE : 6/18

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UNIT TO UNIT NETWORK CONNECTIONS

LIEBERT DS, DSE, CW, PDX & PCW

TO / FROM OTHERNETWORKED UNITS

TB3

P71 P72

P74 P64

E5

P67

P66

P11

P12

P21

P20

P13

P7

P76

P95

P100

P75

2

RS485

ETHERNET

SITE AND BMS COMMUNICATION

CONNECTIONS

iCOMMICROPROCESSOR

AND I/O BOARD

ETHERNET CABLE(FIELD SUPPLIED)

TB3

P

2DETAIL A

-

1 2

A

UNIT-TO-UNIT NETWORKING SWITCH(FIELD SUPPLIED)

+

P95 DVI-D CABLE CONNECTIONTO 7-INCH ICOM DISPLAY P100 POWER SUPPLY TO

7-INCH ICOM DISPLAY


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UNIT TO UNIT NETWORK CONNECTIONS

LIEBERT DS, DSE, CW, PDX & PCW

ETHERNET CABLE(FIELD SUPPLIED)

TB3

P71 P72

P74 P64

E5

P67

P66

P11

P12

P21

P20

P13

P7

P76

P95

P100

P75

2

iCOMMICROPROCESSOR

AND I/O BOARD

TB3

P71 P72

P74 P64

E5

P67

P66

P11

P12

P21

P20

P13

P7

P76

P95

P100

P75

2

iCOMMICROPROCESSOR

AND I/O BOARD

NOTE* For dual-unit network configurations only

P95 DVI-D CABLE CONNECTIONTO 7-INCH ICOM DISPLAY

P100 POWER SUPPLY TO 7-INCH ICOM DISPLAY

P95 DVI-D CABLE CONNECTIONTO 7-INCH ICOM DISPLAY

P100 POWER SUPPLY TO 7-INCH ICOM DISPLAY


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CW305, 375, 415 W/ HORIZONTAL DISCHARGE

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COMPONENT LOCATION DIAGRAM

LIEBERT CW

1. Blower/Motor (Typical 3)

2. Line Reactor Transformers (Typical 3)

3. Evaporator Coil

4. Air Filters

5. Condensate Pump (optional)

6. Electric Panel

7. THD Mitigation Device (optional)

8. VFD Assemblies (Typical 3)

9. 575V Transformer (if applicable)1

4

5

6

73

2

8

Notes:1. Electrical Compartment (item #6) shown on left side of unit. Unit may be ordered with Electrical Compartment on either side, or with Electrical Compartment facing into Gallery space.2. Grills and panels removed for clarity.

9


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CABINET DIMENSIONAL DATA

LIEBERT CW

Louvers innon-raisedfloor application.

Front of Unit(Data Hall Side)

For Unit Disassembly DataRefer to DPN004868

144"3658mm

24 1/4"616mm

59"1499mm Typ.

Louver Section

70"1779mmLouvers

88 1/8"2238mm

46"1168mm

1 3/4"44mmDuct

Flange

120 1/8"3050mm

Fan Plenum is shipped separatelyand field installed.

Data Hall Unit configuration

Front of unit

Front of unit

Rear of Unit(Gallery Side)

60 1/8"1527mm

60 3/4"1544mm

115 3/8"2929mm

Outside ofDuct Flange

53 1/8"1348mm


Front Left Facing Electrical Compartment(may be ordered with

Electrical Compartment facing rear)

Front Right Facing Electrical Compartment(may be ordered with

Electrical Compartment facing rear)


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PRIMARY CONNECTION LOCATIONS

LIEBERT CW

X in. (mm) Y in. (mm) X in. (mm) Y in. (mm)

HV1 2-7/8 (73) 2-1/2 (63) 6 (153)

HV2 6-1/4 (159) 5-5/8 (143) 4-1/4 (108)

LV1 18-1/8 (459) 6-3/8 (163) 6-1/2 (165)

LV2 19-1/2 (494 5 (129) 4-1/2 (114)

LV3 20-7/8 (529) 6-3/8 (163) 6-1/2 (165)

LV4 22-1/4 (564) 5 (129) 4-1/2 (114)

CD Condensate Drain N/A N/A 84-1/2 (2146) 55-1/2 (1410) 3/4" NPT Female

CP Condensate Pump 20 (509) 27-7/8 (707) N/A N/A 1/2" O.D. Cu

S Supply Pipe Connection 15 (381)

R Return Pipe Connection 9 (229)

Connection Size/Opening

2-1/2"

N/A N/A

1-1/2"

Bottom View

30 (762) 4-1/8" O.D. Cu

22-5/8 (575)

POINT Description

Electrical Conn. (High Volt)

Top View

6-1/4 (160)

20-5/8 (524)

Electrical Conn. (Low Volt)

Notes:

1. Drawing not to scale. All dimensions from left corner on service side and have a tolerance of ± 1/2" (13mm).

2. Field pitch Condensate Drain line a minimum of 1/8" (3.2mm) per 12" (305mm). Install an external 5-1/2" (140mm) trap in the drain line (if desired). The factory unit does not contain a trap. Select appropriate drain system materials. The drain must comply with all local codes.3. Piping connection can be made at the top or bottom of the unit.

HV1

HV2

LV2LV4

LV1

X

Y

O 1

OX

Y

2

LV3

CD

Data Hall Side

CW305, 375, 415 DATA HALL W/ HORIZONTAL DISCHARGEFRONT LEFT FACING ELECTRICAL/PIPING COMPARTMENT

Top View

Bottom View

SR

HV1

HV2

LV1

LV3

LV2

1

LV4

CPS

R


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ELECTRICAL FIELD CONNECTIONS

LIEBERT CW

STANDARD ELECTRICAL CONNECTIONS 1. High voltage entrance - Located in bottom and top of box (quantity 2). Raceway in front left corner of

enclosure for routing high voltage wires thru enclosure. 2. Low voltage entrance – Located in bottom and top of box (quantity 4). Raceway in front right corner of

enclosure for routing low voltage wires thru enclosure. 3. Three phase electrical service - Terminals are on top of disconnect switch. Three phase service not

provided by Liebert. 4. Earth ground - Terminal for field supplied earth grounding wire and component ground terminal strip.

Earth grounding required for Liebert units. 5. Unit factory installed disconnect switch and Main Fuses – Access to the high voltage electric panel

compartment can be obtained only with the switch in the “off” position. Fused disconnects are provided with a defeater button that allows access to the electrical panel when power is on.

6. Remote unit shutdown - Replace existing jumper between terminals 37 & 38 with field supplied normally closed switch having a minimum 75VA, 24VAC rating. Use field supplied Class 1 wiring.

7. Customer alarm inputs - Terminals for field supplied, normally open contacts, having a minimum 75VA, 24VAC rating, between terminals 24 & 50, 51, 55, 56. Use field supplied Class 1 wiring. Terminal availability varies by unit options.

8. Common alarm - On any alarm, normally open dry contact is closed across terminals 75 & 76 for remote indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.


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LIEBERT CW

OPTIONAL ELECTRICAL CONNECTIONS 9. Condensate alarm (with condensate pump option) - On pump high water indication, normally open dry

contact is closed across terminals 88 & 89 for remote indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.

10. Remote humidifier - On any call for humidification, normally open dry contact is closed across terminals 11 & 12 to signal field supplied remote humidifier. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring

11. Reverse Starter contacts - Normally open dry contact is closed across terminals 102 & 103 for power supply 1 and 106 & 107 for power supply 2 to indicate the active power feed. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.

12. Smoke sensor alarm - Factory wired dry contacts from smoke sensor are 91-common, 92-NO, and 93-NC. Supervised contacts, 80 & 81, open on sensor trouble indication. This smoke sensor is not intended to function as, or replace, any room smoke detection system that may be required by local or national codes. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.

13. Analog inputs- Terminals 41, 42, 43, and 44 are user configurable for 0-10V, 0-5V, or 4-20MA.

OPTIONAL LOW VOLTAGE TERMINAL PACKAGE CONNECTIONS 14. Remote unit shutdown - Two additional contact pairs available for unit shutdown (labeled as 37B & 38B,

37C & 38C). Replace jumpers with field supplied normally closed switch having a minimum 75VA, 24VAC rating. Use field supplied Class 1 wiring.

15. Common alarm - On any alarm, two additional normally open dry contacts are closed across terminals 94 & 95 and 96 & 97 for remote indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.

16. Main fan enabled contact - On VFD enable, normally open dry contact is closed across terminals 84 & 85 for remote indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.

17. LiquiTect shutdown and dry contact - On LiquiTect activation, normally open dry contact is closed across terminals 58 & 59 for remote indication (LiquiTect sensor ordered separately). 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.

OPTIONAL COMMUNICATION CONNECTIONS 18. Unit-to-Unit – Plug 64 is reserved for U2U communication 19. Site and BMS – Plug 74 and terminal block 3 are reserved for Site and BMS connections. Plug 74 is an

eight pin RJ45 for a Cat 5 cable. Terminal block 3 is a two position screw terminal block for use with twisted pair wires.


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LIEBERT CW

7

8

15

9

10

11

13

14

6

12

16

17

121819

3

4

5

1 2

ANALOGINPUTS

SMOKEDETECTION

RAD2

CPSS

RAD4

RAD1ALARMINPUTS

COMMONALARMS

REMOTESHUT DOWN

REVSTARTER

RA / RB

EXTRAREMOTE

SHUT DOWN

EXTRACOMMON

ALARM

CONDENSATEPUMP

LIQUITECTSHUT DOWN

MAIN FANENABLED

REMOTEHUMID

102

24

50

51

55

56

75

76

94

95

96

88

89

58

59

84

85

11

103

106

107

37C

38C

37B

38B

37

38

41

42

43

44

12

97

80

81

91

92

93

Detail A

See Detail A


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AIRFLOW SCHEMATIC

LIEBERT CW

Return Airfrom Data Center

Supply Airto Data Center

Front (Data Hall Side)

114"2896mm

70"1779mm

7 1/2"189mm

10 1/2"267mm

3"76mm

1 3/4"44mmDuct

Flange

Notes:

1. Electrical Compartment shown on left side of unit. Unit may be ordered with Electrical Compartment on right or left side, or with Electrical Compartment facing into the Gallery space.

1

61"1550mm

FanSection

53 1/8"1348mm


115 3/8"2929mm


4 3/8"111mm

2 3/8"60mm


DPN004866Page :1 /1

CW305, 375, 415

For

m N

o.: D

PN

0010

40_R

EV

4

FLOORSTAND DIMENSIONAL DATA

LIEBERT CW

12 (305)

24 (610)

30 (762)

36 (914)

42 (1069)

48 (1219)

Height in. ( mm )

A

Notes:

1. Leveling feet are provided with u 1-1/2” (38mm) adjustment from nominal height “A”.

2. Dimensions are to center of feet.

3. Floorstand shown in configuration for Electrical Box on the left side of the unit. When unit is ordered with the Electrical Box on the right side of the unit, cantilevered portion of floorstand will appear on the right side.

1

2

2

222

2

222

Front View Right Side View

Top View

A

60"1524mmOverallDepth

143 3/4"3651mmOverallLength

116 1/4"2953mm

33 7/8"860mm

43 1/2"1105mm

Typ. (2) Plcs.

36 3/8"924mm

56 1/4"1430mm

Typ.

28 1/8"715mm

Typ. (2) Plcs.

33 7/8"860mm

36 3/8"924mm

2 1/2"64mm

Typ. (2) Plcs.

24"610mm

46"1168mm


DPN004869Page :1 /2

FOR ADJACENT CW305, 375, 415 UNITS

For

m N

o.: D

PN

0010

40_R

EV

4

FLOOR PLANNING DIMENSIONAL DATA

LIEBERT CW

Gasketing shown is for pictorialpurposes only to show edges ofunit that require gap sealing.Gasketing and method to beprovided and applied by othersin the field.

Data Hall Side

1Notes:

1. Gap is measured between frame members of adjacent units.

2. Gasketing required only on shortest section being placed adjacent to another unit.

3. View shows both Electronic Component Sections on the left. The same gasketing instructions apply when both Electronic Component Sections are on the right, or with one on the left and the other on the right.

2

View with both Electrical Component Sections on leftA

DETAIL A

3/4"19mm

Minimum gap to be filled withgasketing between each unit


DPN004869Page :2 /2

FOR ADJACENT CW305, 375, 415 UNITS

For

m N

o.: D

PN

0010

40_R

EV

4

FLOOR PLANNING DIMENSIONAL DATA

LIEBERT CW

Notes:

1. Gap is measured between frame members of adjacent units.

Gasketing shown is for pictorialpurposes only to show edges ofunit that require gap sealing.Gasketing and method to beprovided and applied by othersin the field.

View with Electrical Component Sections at opposite endsB

DETAIL B

3/4"19mm

Minimum gap to be filled withgasketing between each unit

1


DPN004870Page :1 /3

For

m N

o.: D

PN

0010

40_R

EV

4

INSTALLATION & SERVICE CLEARANCE DATA CW305-415

LIEBERT CW

Wall

Piping & Cablescan be routedin this zone.

66"(1676mm)Full Unit and Electrical Panel Access

Full Unit and Electrical Panel Access

Data Hall

Notes:1. Electrical Compartment is shown on the right side of the unit. Unit may be ordered with Electrical Compartment on either side, or with Electrical Compartment facing into Gallery Space.

PERIMETER INSTALLATION AND SERVICE CLEARANCE HORIZONTAL DISCHARGE


DPN004870Page :2 /3

For

m N

o.: D

PN

0010

40_R

EV

4


LIEBERT CW

Notes:1. Electrical Compartment is shown on the right side of the unit. Unit may be ordered with Electrical Compartment on either side, or with Electrical Compartment facing into Data Hall.

Wall Piping and Cablescan be routedin this zone.

66"(1676mm)

Full Unit and Electrical Panel Access

Unit Disassembly access andElectrical Panel access

Gallery Side

PERIMETER INSTALLATION AND SERVICE CLEARANCE BOTTOM DISCHARGE


DPN004870Page :3 /3

For

m N

o.: D

PN

0010

40_R

EV

4


LIEBERT CW

GALLERY INSTALLATION AND SERVICE CLEARANCE

Notes:1. Electrical Compartment is shown on the left side of the unit. Unit may be ordered with Electrical Compartment on either side, or with Electrical Compartment facing into Data Hall.

Data Hall

Gallery Side

Wall

Piping and Cablescan be routedin this zone.

66"(1676mm)

Electrical Panel Access


DPN004899Page :1 /1

For

m N

o.: D

PN

0010

40_R

EV

4

LIEBERT CW

CW305, 375, 415 W/ BOTTOM DISCHARGE

COMPONENT LOCATION DIAGRAM

1. Blower/Motor (Typical 3)

2. Line Reactor Transformers (Typical 3)

3. Evaporator Coil

4. Air Filters

5. Condensate Pump (optional, shipped loose)

6. Electric Panel

7. THD Mitigation Device (optional)

8. VFD Assemblies (Typical 3)

9. 575V Transformer (if applicable)

Notes:1. Electrical Compartment (item #6) shown on left side of unit. Unit may be ordered with Electrical Compartment on either side, or with Electrical Compartment facing into Gallery space.

2. Condensate Pump (if ordered) to be shipped loose and attached to this frame member for shipping. Customer to locate and install.

63

Panels removedfor clarity

4

8

1

2

952

7


DPN004900Page :1 /1

CW305, 375, 415 W/ BOTTOM DISCHARGE

For

m N

o.: D

PN

0010

40_R

EV

4

CABINET DIMENSIONAL DATA

LIEBERT CW

Fan Plenum isshipped separatelyand field installed.

Data Hall Unit configuration

Front of unit

Front of unit

Front of Unit

144"3659mm

24 1/4"616mm

25 1/8"638mm Typ.

79 1/8"2009mm

88 1/8"2239mm

46"1168mm

120 1/8"3050mm 1 3/4"

44mmDuct

Flange

Rear of Unit

53 1/8"1348mm


115 3/8"2929mm


61"1550mm

60 1/8"1527mm

Front Left Facing Electrical Compartment

Front Right Facing Electrical Compartment


DPN004901Page :1 /1

For

m N

o.: D

PN

0010

40_R

EV

4


LIEBERT CW

CW305, 375, 415 W/ BOTTOM DISCHARGEFRONT RIGHT FACING ELECTRICAL/PIPING COMPARTMENT


HV1 21 (533) 21-3/8 (543) 5 (127)

HV2 17-5/8 (448) 18-1/4 (464) 3-1/4 (83)

LV1 5-3/4 (148) 6-3/8 (162) 3-1/4 (83) 5-1/2 (140)

LV2 4-38 (113) 5 (127) 1-1/4 (32) 3-1/2 (89)

LV3 3 (78) 6-3/8 (162) 3-1/4 (83) 5-1/2 (140)

LV4 1-5/8 (43) 5 (127) 1-1/4 (32) 3-1/2 (89)

CD Condensate Drain 83 (2108) 54-1/2 (1384) 3/4" NPT Female

CP Condensate Pump 1/2" O.D. Cu



Electrical Conn. (Low Volt) 1-1/2"

Bottom ViewPOINT Description


Top ViewConnection Size/Opening

2-1/2"

28-3/4 (731)

6-1/4 (159)

4-1/8 O.D. Cu

N/A N/A

Notes:

1. Drawing not to scale. All dimensions from right corner on service side and have a tolerance of ± 1/2" (13mm).

2. Condensate Pump to be field located and installed by customer. 3. Field pitch Condensate Drain line a minimum of 1/8" (3.2mm) per 12" (305mm). Install an external 5-1/2" (140mm) trap in the drain line (if desired). The factory unit does not contain a trap. Select appropriate drain system materials. The drain must comply with all local codes.4. Piping connection can be made at the top or bottom of the unit.

HV1 HV2

LV1

LV3

LV2

LV1

X

Y

O 1

OX

Y

1

LV4

LV3

CD

Top View

Bottom View

S

R

22

3

RS


DPN004903Page :1 /1

For

m N

o.: D

PN

0010

40_R

EV

4


LIEBERT CW

CW305, 375, 415 W/ BOTTOM DISCHARGEFRONT LEFT FACING ELECTRICAL/PIPING COMPARTMENT

HV1

HV2

LV1

LV3

LV2

HV1

HV2

LV4

LV2

LV3

X

Y

O1

O X

Y

1

LV4

LV1

CD

Top View

Bottom View

R

S


HV1 2-7/8 (73) 2-1/2 64) 5 (127)

HV2 6-1/4 (159) 5-5/8 (143) 3-1/4 (83)

LV1 18-1/8 (459) 6-3/8 (163) 5-1/2 (140)

LV2 19-1/2 (494 5 (129 3-1/2 (89)

LV3 20-7/8 (529) 6-3/8 (163) 5-1/2 (140)

LV4 22-1/4 (564) 5 (129) 3-1/2 (89)

CD Condensate Drain 84-5/8 (2149) 54-1/2 (1384) 3/4" NPT Female

CP Condensate Pump 1/2" O.D. Cu



20-5/8 (524)

22-5/8 (575)

Electrical Conn. (Low Volt) 1-1/2"

Bottom View

N/A N/A

28-3/4 (731) 4-1/8" O.D. Cu

POINT Description


Top ViewConnection Size/Opening

2-1/2"6-1/4 (160)

Notes:


2. Condensate Pump to be field located and installed by customer.


2 2 2

3

S

R


DPN004904Page :1 /1

CW305, 375, 415 DOWNFLOW UNIT W/ BOTTOM DISCHARGE

For

m N

o.: D

PN

0010

40_R

EV

4

AIRFLOW SCHEMATIC

LIEBERT CW

Return Airfrom Data Center

Supply Airto Data Center

Notes:

1. Electrical Compartment shown on left side of unit. Unit may be ordered with Electrical Compartment on right or left side of unit.

1

1 3/4"44mmDuct

Flange

115 3/8"2929mm

DuctFlange

53 1/8"1348mm

DuctFlange

115 3/4"2940mm

55 3/4"1418mm

34 5/8"879mm

Typ.


DPN004923Page :1 /1

For

m N

o.: D

PN

0010

40_R

EV

4


LIEBERT CW


HV1 20-1/8 (513) 21-1/4 (540) 6 (153)

HV2 17-1/2 (444) 18-1/8 (460) 4-1/4 (109)

LV1 5-5/8 (144) 6-3/8 (163) 6-1/2 (166)

LV2 4-1/4 (109) 5 (129) 4-1/2 (115)

LV3 2-7/8 (75) 6-3/8 (163) 6-1/2 (166)

LV4 1-1/2 (40) 5 (129) 4-1/2 (115)


CP Condensate Pump 20 (509) 27-7/8 (707) N/A N/A 1/2" O.D. Cu

S Supply Pipe Connection 14-7/8 (378)

R Return Pipe Connection 8-7/8 (225)

POINT Description


Top View

6-1/4 (160)

3-1/8 (79



2-1/2"

N/A N/A

1-1/2"

Bottom View

30 (762) 4-1/8" O.D. Cu

1-1/8 (29)

Notes:



X

Y

O

O X

Y

2

Data Hall Side

CW305, 375, 415 DATA HALL W/ HORIZONTAL DISCHARGEFRONT RIGHT FACING ELECTRICAL/PIPING COMPARTMENT

Top View

Bottom View

HV1

HV2

LV1

LV3

LV2

1

LV4

CP

SR

HV1HV2

LV1

LV3

LV2

LV4

CD

Gallery Side

R

S

Data Hall Side


DPN004924Page :1 /1

For

m N

o.: D

PN

0010

40_R

EV

4


LIEBERT CW


HV1 21 (533) 21-3/8 (543) 6 (153)

HV2 17-5/8 (448) 18-1/4 (464) 4-1/4 (109)

LV1 5-3/4 (148) 6-1/2 (164 6-1/2 (166)

LV2 4-3/8 (113) 5-1/8 (129) 4-1/2 (115)

LV3 3 (78) 6-1/2 (164) 6-1/2 (166)

LV4 1-1/2 (37) 5-1/8 (129) 4-1/2 (115)


CP Condensate Pump 20-1/8 (512) 27-7/8 (708) N/A N/A 1/2" O.D. Cu




2-1/2"

N/A N/A

1-1/2"

Bottom View

30 (762) 4-1/8" O.D. Cu

1-1/4 (32)

POINT Description


Top View

6-1/4 (160)

3-1/4 (83)


Notes:



X

Y

O

OX

Y

2

Data Hall Side

CW305, 375, 415 GALLERY W/ HORIZONTAL DISCHARGEFRONT RIGHT FACING ELECTRICAL/PIPING COMPARTMENT

Top View

Bottom View

HV1HV2

HV2HV1

LV4LV2

LV1

LV3

CP

1

1

LV2 LV4

LV3

LV1

CD

R

S

Gallery Side

S

R

Data Hall Side


DPN004925Page :1 /1

For

m N

o.: D

PN

0010

40_R

EV

4


LIEBERT CW


HV1 6-3/8 (162) 5-3/4 (146) 6 (153)

HV2 3 (76) 2-5/8 (67) 4-1/4 (109)

LV1 21 (532) 6-1/2 (164 6-1/2 (166)

LV2 22-3/8 (567) 5-1/8 (129) 4-1/2 (115)

LV3 18-1/4 (462) 6-1/2 (164) 6-1/2 (166)

LV4 19-5/8 (497) 5-1/8 (129) 4-1/2 (115)

CD Condensate Drain N/A N/A 83 (2108) 3-5/8 (94) 3/4" NPT Female

CP Condensate Pump 20-1/8 (512) 27-7/8 (708) N/A N/A 1/2" O.D. Cu




2-1/2"

N/A N/A

1-1/2"

Bottom View

30 (762) 4-1/8" O.D. Cu

20-3/4 (527)

POINT Description


Top View

6-1/4 (160)

22-3/4 (578)


Notes:



X

Y

O

OX

Y

2

Data Hall Side

CW305, 375, 415 GALLERY W/ HORIZONTAL DISCHARGEFRONT LEFT FACING ELECTRICAL/PIPING COMPARTMENT

Top View

Bottom View

1

1

HV1

HV2LV1

LV3

LV2LV4

CP

HV1

HV2LV1

LV3

LV2LV4

RS

CD

Gallery Side

RS


DPN004952Page :1 /1

For

m N

o.: D

PN

0010

40_R

EV

4

GENERAL ARRANGEMENT DIAGRAM

LIEBERT CW

CW305, 375, 415

ChilledWaterReturn

ChilledWaterSupply

OffValves

Bibs

ValveActuator

Air Flow

FACTORY PIPING

FIELD PIPING

Bleed Valve

Shut

Hose

Notes:

1. Components are not supplied by Liebert, but are required for proper circuit operation and maintenance.

1

1

ChilledWaterCoil

2-Way ChilledWater Valve

Vertiv | Liebert® CW™ Installer/User Guide

VertivCo.com | Vertiv Headquarters, 1050 Dearborn Drive, Columbus, OH, 43085, USA

© 2018 Vertiv Co. All rights reserved. Vertiv and the Vertiv logo are trademarks or registered trademarks of Vertiv Co. All other names and logos referred toare trade names, trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy andcompleteness herein, Vertiv Co. assumes no responsibility, and disclaims all liability, for damages resulting from use of this information or for any errors oromissions. Specifications are subject to change without notice.

SL-70374_REV1/590-2204-501A

Documents

Liebert® CW™ Installer/User Guide - Vertiv€¦ · Liebert® CW™Thermal Management System Installer/UserGuide 305 kW,375 kW,415 kWCapacity,50/60 Hz