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Tab D

Manufacturer Product & Technical Data

Table of Contents Section Page

Liebert CW User Manual

Installation

Operation & Maintenance

Computer Room Air-Conditioners

Tab D

Precision Cooling For Business-Critical Continuity™

Liebert® CW™

User Manual–26-181 kW, 7.5-52 Tons, Upflow and Downflow, 50/60Hz

DATA CENTER SOLUTIONS

For More Information:

(866) 787-3271 Sales@PTSdcs.com

Specification 238123 - Page 1 of 119

Specification 238123 - Page 2 of 119 i

TABLE OF CONTENTS

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

1.0 LIEBERT CW NOMENCLATURE

2.0 INSTALLATION GUIDELINES

2.1 Room Preparation

2.2 Air Distribution—Downflow Units

2.3 Air Distribution—Upflow Units

2.4 Connections and System Setup

2.5 Operating Conditions

2.6 Location Considerations

3.0 LIEBERT CW DIMENSIONS AND WEIGHTS

4.0 EQUIPMENT INSPECTION AND HANDLING

4.1 Packaging Material

SAFETY INFORMATION

4.2 Unpacking the Unit

4.2.1 Removing the Unit from the Skid With a Forklift

4.2.2 Moving the Unit to the Installation Location with Piano Jacks

4.2.3 Removing Piano Jacks

4.2.4 Removing Liebert CW from Skid Using Rigging

5.0 EC FAN—LOWERING AND REMOVING

5.1 Lowering the EC Fans into the Floor Stand

5.2 Removing the EC Fans

6.0 ELECTRICAL CONNECTIONS

6.1 Electrical Connections

7.0 PIPING

7.1 Fluid Connections

7.1.1 Condensate Piping—Field-Installed

7.1.2 Humidifier Supply Water—Optional Infrared

7.1.3 Humidifier Supply Water—Optional Steam Generating Humidifier

7.2 Chilled Water Piping

7.2.1 Requirements of Systems Using Water or Glycol

8.0 PIPING SCHEMATICS

9.0 CHECKLIST FOR COMPLETED INSTALLATION

9.1 Moving and Placing Equipment

9.2 Electrical

9.3 Piping

9.4 Other

Specification 238123 - Page 3 of 119 ii

10.0 INITIAL STARTUP PROCEDURE

10.1 Additional Considerations for Upflow Units

11.0 COMPONENT OPERATION AND MAINTENANCE, CHECKS AND ADJUSTMENTS

11.1 System Testing

11.1.1 Environmental Control Functions

11.1.2 Electric Panel

11.2 Filters

11.3 Blower Package—Centrifugal Fans

11.3.1 Fan Impellers and Bearings

11.3.2 Belts—Except with EC Fans

11.3.3 Electronic Variable Speed Drive (Inverter)

11.4 Blower Package—EC Fans

11.4.1 Fan Impellers and Bearings

11.4.2 Protective Features

11.5 Humidifier

11.5.1 Infrared Humidifier

11.5.2 Cleaning Humidifier Pan and Float Switch

11.5.3 Changing Humidifier Lamps

11.6 Steam Generating Humidifier

11.7 Condensate Drain and Condensate Pump Systems

11.7.1 Condensate Drain

11.7.2 Condensate Pump

11.8 Facility Fluid and Piping Maintenance

12.0 TROUBLESHOOTING

13.0 HVAC MAINTENANCE CHECKLIST

COMPLIANCE WITH EUROPEAN UNION DIRECTIVES. . . . . . . . . . . . . . . . . . . . . . INSIDE BACK COVER

FIGURES

Figure 1 Upflow ducting configurations Figure 2 Cabinet and floor planning dimensions for downflow chilled water models CW026 - CW084 with forward-curved fans Figure 3 Cabinet and floor planning dimensions for downflow chilled water models CW106 and CW114 with forward-curved fans Figure 4 Cabinet and floor planning dimensions for downflow chilled water models CW089, CW106 and CW114 with EC fans Figure 5 Cabinet and floor planning dimensions for downflow chilled water models CW146 and CW181 with EC fans Figure 6 Cabinet and floor planning dimensions for upflow chilled water models CW026-CW084 Figure 7 Cabinet and floor planning dimensions for upflow chilled water models, CW106 and

CW114

Figure 8 Floor stand dimensions, optional steam, hot water reheat and humidifier piping entrances for CW026 - CW84 models with forward-curved fans Figure 9 Floor stand dimensions for CW106 and CW114 models with forward-curved fans Figure 10 Floor stand and floor planning dimensions, downflow models CW026 - CW041 with

EC fans

Specification 238123 - Page 4 of 119 iii

Figure 11 Floor stand and floor planning dimensions for downflow models CW051 and CW060 with EC fans

Figure 12 Floor stand and floor planning dimensions, downflow models CW076 and CW084 with EC fans

Figure 13 Floor stand and floor planning dimensions, downflow models CW089, CW106 and CW114 with EC fans

Figure 14 Floor stand and floor planning dimensions, downflow models CW146 and CW181 with EC fans

Figure 15 Plenum dimensions for upflow chilled water models CW026 - CW084 Figure 16 Plenum dimensions for upflow chilled water models CW106 and CW114 Figure 17 Blower duct and deck dimensions for CW106 and CW114 upflow chilled water models Figure 18 Filter plenum dimensions, downflow models CW146 and CW181 with EC fans Figure 19 Equipment recommended for handling the Liebert CW Figure 20 Removing packaging Figure 21 Remove the unit from the skid Figure 22 Moving the unit to its installation location Figure 23 Locate center of gravity marker and place slings Figure 24 Using rigging to lift Liebert CW off skid Figure 25 EC fan lowering procedure Figure 26 EC fan lowering and removal procedure Figure 27 Electrical field connections for downflow chilled water models CW026 - CW084 Figure 28 Electrical field connections for downflow chilled water models CW089, CW106 and CW114 . . . 36 Figure 29 Electrical field connections (high voltage) for upflow chilled water models CW026 - CW084 . . . 37 Figure 30 Electrical field connections (low voltage) for upflow chilled water models CW026 - CW084 . . . 38 Figure 31 Electrical field connections (high voltage) for upflow chilled water models CW106 and CW114 Figure 32 Electrical field connections (low voltage) for upflow chilled water models CW106 and

CW114

Figure 33 Electrical field connections for downflow chilled water models CW146 and CW181 Figure 34 Gravity drain for downflow and upflow units Figure 35 Chilled water downflow general arrangement Figure 36 Piping connections for downflow chilled water models CW026 - CW084 with forward-curved fans Figure 37 Piping connections for downflow chilled water models CW106 and CW114 with forward-curved fans Figure 38 Primary connection locations, downflow models CW026 - CW041 with EC fans Figure 39 Primary connection locations, downflow models CW051 and CW060 with EC fans Figure 40 Primary connection locations, downflow models CW076 - CW084 with EC Fans Figure 41 Primary connection locations, downflow models CW089, CW106 and CW114 with EC fans . . . 56 Figure 42 Primary connection locations, downflow models CW146 and CW181 with EC fans Figure 43 Chilled water upflow general arrangement Figure 44 Piping connections for upflow chilled water models CW026 - CW084 Figure 45 Piping connections for upflow chilled water CW106 and CW114 Figure 46 Correct orientation of float switch Figure 47 Steam generating humidifier Figure 48 Run/drain switch Figure 49 Steam generating humidifier control board

Specification 238123 - Page 5 of 119 iv

TABLES

Table 1 Unit dimensions and weights Table 2 Maximum harmonic current distortion, IEEE-519-1992 Table 3 Typical TDD for CW106, CW114 and CW146 at 460V Table 4 Typical TDD for CW181 at 460V Table 5 Humidifier canister part numbers Table 6 Faults—canister generator humidifier Table 7 Steam generating humidifier capacity Table 8 DIP switch settings for steam generating humidifier Table 9 Blower troubleshooting Table 10 Chilled water troubleshooting Table 11 Humidifier—steam generator troubleshooting Table 12 Humidifier—infrared troubleshooting Table 13 Reheat troubleshooting

Specification 238123 - Page 6 of 119

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important safety instructions that should be followed during the installation and maintenance of the Liebert CW™. Read this manual thoroughly before attempting to install or operate this unit.

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

Adhere to all warnings, cautions and installation, operating and safety instructions on the unit and in this manual. Follow all operating and user instructions.

! WARNING

Arc flash and electric shock hazard. Disconnect all electric power supplies and wear protective equipment per NFPA 70E before working within electric control enclosure. Failure to comply can cause serious injury or death.

Customer must provide earth ground to unit, per NEC, CEC and local codes, as applicable.

Before proceeding with installation, read all instructions, verify that all the parts are included and check the nameplate to be sure the voltage matches available utility power.

The Liebert iCOM microprocessor does not isolate power from the unit, even in the Unit Off mode. Some internal components require and receive power even during the Unit Off mode of Liebert iCOM control.

The line side of the disconnect switch on the front of the unit contains live high-voltage.

The only way to ensure that there is NO voltage inside the unit is to install and open a remote disconnect switch. Refer to unit electrical schematic.

Follow all local codes.

! WARNING

Risk of high-speed moving parts. Can cause injury or death.

Disconnect all local and remote electric power supplies before working in the unit.

Do not operate this unit with any or all cabinet panels removed.

Do not operate upflow units without installing a plenum, ductwork or guard over the blower opening(s) on the top surface of the unit cabinet.

Ductwork must be connected to the blower(s), or a plenum must be installed on the blower deck for protection from rotating blower wheel(s) on upflow units.

! WARNING

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

Read all of the following instructions before attempting to move the unit, lift it, remove packaging or prepare the unit for installation.

! CAUTION

Risk of contact with hot surfaces. Can cause injury.

The humidifiers and reheats are extremely hot during unit operation. Allow sufficient time for them to cool before working within the unit cabinet. Use extreme caution and wear protective gloves and arm protection when working on or near hot discharge lines, humidifiers and reheats.

! CAUTION

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

Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and glasses should attempt to move the unit, lift it, remove packaging or prepare the unit for installation.

Specification 238123 - Page 7 of 119

NOTICE

Risk of clogged or leaking drain lines. Can cause equipment and building damage.

This unit requires a water drain connection. Drain lines must be inspected regularly and maintenance must be performed to ensure that drain water runs freely through the drain system and that lines are clear and free of obstructions and in good condition with no visible sign of damage or leaks. This unit may also require an external water supply to operate.

Improper installation, application and service practices can result in water leakage from the unit. 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.

Emerson recommends installing leak detection equipment for unit and supply lines.

NOTICE

Risk of a leaking coil due to freezing and/or corrosion. Can cause equipment and serious building damage.

Cooling coils and piping systems that are connected to open cooling towers or other open water/glycol systems are at high risk for freezing and premature corrosion. Fluids in these systems must contain the proper antifreeze and inhibitors to prevent freezing and premature coil corrosion. The water or water/glycol solution must be analyzed by a competent water treatment specialist before startup to establish the inhibitor requirement. The water or water/glycol solution must be analyzed every six months to determine the pattern of inhibitor depletion. The complexity of water-caused problems and their correction makes it important to obtain the advice of a water treatment specialist and follow a regularly scheduled maintenance program.

NOTICE

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

The unit may be too tall to fit through a doorway while on the skid. Measure the unit and doorway heights and refer to the installation plans to verify clearances prior to moving the unit.

NOTICE

Risk of damage from forklift. Can cause unit damage.

Keep tines of the forklift level and at a height 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 Liebert CW upright, indoors and protected from dampness, freezing temperatures and contact damage.

Specification 238123 - Page 8 of 119

Liebert CW Nomenclature

1.0 LIEBERT CW NOMENCLATURE

CW

CW = Liebert CW Floor Mount Chilled Water Unit

026 D C S A 2 1234 A

Nominal Capacity, kW

D = Downflow U = Upflow with Front

Return

C = Chilled Water

S = Forward-Curved Centrifugal Fan with Standard Motor

V = Forward-Curved Centrifugal Fan with Variable Speed Drive

1 = EC Motorized Impeller

2 = 2-Way Valve, Standard Pressure 3 = 3-Way Valve, Standard Pressure 1 = 2-Way Valve, High Pressure T = 3-Way Valve, High Pressure

A-Z = Standard configuration

S = SFA

A = 460/3/60 B = 575/3/60 C = 208/3/60 D = 230/3/60 2 = 380/3/60 F = 380/3/50 G = 415/3/50 M = 380-415V/3/50 Hz

XXXX

Specification 238123 - Page 9 of 119

Installation Guidelines

2.0 INSTALLATION GUIDELINES

2.1 Room Preparation

• Verify that the floor is level, solid and sufficient to support the unit. See Table 1 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% of total air circulated in the room).

• Do not install Liebert CW units 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

Figures 2 through 17 for dimensions.

• Emerson recommends installing an under-floor water detection system. Contact your local Emer-son representative for information.

2.2 Air Distribution—Downflow Units

• Verify that the raised floor has been properly sized for the unit’s airflow and the room is free of airflow restrictions.

• Perforated floor tiles in the raised floor should ensure minimal pressure loss.

• The raised floor must provide 7-1/2" (191mm) of clearance.

• Ensure that there is adequate clearance above the unit for service, such as replacing filters.

• Optional plenums are available for downflow unit ducting.

• If installing units with electrically commutated fans (EC fans), there must be 24" minimum clear-ance below the unit to lower the fans. Fans may also remain the in unit if desired.

• A filter plenum is required for Liebert CW146 and CW181 units.

NOTE

The floor stand used with EC units is not symmetrical and its orientation to the Liebert CW is critical to lowering the EC fans. Unless the floor stand is installed in the correct position, the blowers will not lower into the floor stand.

Specification 238123 - Page 10 of 119

2.3 Air Distribution—Upflow Units

Various configurations are available:

• Front return

• Rear return

• Bottom return (not available on CW106 and CW114 models)

For in-room applications with supply and return grilles, several feet of clearance must be maintained at the intake and discharge of the unit. For a bottom return, at least 6-8 inches of unrestricted under-floor height is needed.

Upflow rear-return configurations use a filter box attached to the back of the Liebert CW. Allow 25" (635 mm) on one side of the unit for access to the rear return filter box. Refer to the filter box installa-tion sheet, which can be found inside the rear return filter box package.

For ducted applications, duct flanges are supplied on the blower outlets. Follow the SMACNA-Duct Construction Standard for single-, dual-, or triple-blower systems. Do not run ductwork off the perim-eter flange on the top of the unit. This flange is for positioning and attaching the optional air dis-charge plenum with grille. Attaching a duct to this flange may reduce airflow to inadequate levels.

Figure 1 Upflow ducting configurations

! WARNING

Risk of high-speed moving parts. Can cause injury or death. Disconnect all local and remote electric power supplies and make sure blowers and pulleys have stopped rotating before working in the unit.

Do not operate upflow units without installing a plenum, ductwork or guard over the blower opening(s) on the top surface of the unit cabinet.

Ductwork must be connected to the blower(s), or a plenum must be installed on the blower deck for protection from rotating blower wheel(s) on upflow units.

NOTE

Drain traps are qualified to a return duct static of negative 1.5 i.w.g. (-1.5 i.w.g).

DPN001156

Rev. 0

* Follow standard practices on all duct work.

Straight section of duct off of unit to be 1.5 to 2.5 times the longest blower dimension.

Typical ducting shown; ducting may run to either side.

Specification 238123 - Page 11 of 119

2.4 Connections and System Setup

• Plan the routing of wiring, piping and ductwork to the unit. See Figures 27 through 33 and

Figures 35 through 45 for unit connection locations.

• The unit requires a drain, which must comply with all applicable codes. This drain line may con-tain boiling water. See 7.1.1 - Condensate Piping—Field-Installed for details.

• Three-phase electrical service is required for all models. Electrical service must conform to national and local electrical codes. See the equipment nameplate for details.

• If seismic requirements apply, consult your local Emerson representative for information about a seismic-rated floor stand.

2.5 Operating Conditions

• The Liebert CW should be operated in a conditioned space within the operating envelope

ASHRAE recommends for data centers: Maximum temperature of 77°F (25°C) DB and 55% RH or maximum WB of 65.5°F (18.6°C).

• 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 decrease equipment reliability.

Refer to the ASHRAE publication, “Thermal Guidelines for Data Processing Environments.”

2.6 Location Considerations

For a downflow unit, the unit can sit on an accessible, elevated flooring system. It may be necessary to furnish additional pedestal support below the unit to ensure maximum structural support. A separate floor stand for the unit may be used as support, independent of the elevated floor and installed prior to the flooring system.

For downflow and upflow units, provide approximately 34" (864mm) service clearance on the left, right and in front of the unit whenever possible. The minimum space required for service is 18" (457mm) on the left end, 18" (457mm) on the right end and 24" (610mm) in front of the unit. This space is necessary to permit routine maintenance, such as replacing filters and adjusting the fan speed. On downflow chilled water units and upflow CW106 and CW114 models, left- and right-end minimum clearances are 0" (0 mm), with the exception of rear return.

Avoid installing units in an alcove or at the extreme end of a room that has a high aspect ratio (long narrow room). Also avoid installing units too close together. This tends to reduce the effectiveness of the air distribution as compared to units located 30-40 feet (9-12m) apart.

Specification 238123 - Page 12 of 119

Liebert CW Dimensions and Weights

3.0 LIEBERT CW DIMENSIONS AND WEIGHTS

Figure 2 Cabinet and floor planning dimensions for downflow chilled water models CW026 - CW084 with forward-curved fans

Table 1 Unit dimensions and weights

Model

Dimensions, inches (mm) Net Weight lb (kg)A B C D E F G

H (FC Only) J K

L (EC Only)

M (EC Only)

CW026

(1270)

(1168)

(889)

(813)

(1219)

(883)

(203)

(940) 35-5/8 (905)

(787)

(711)

2-7/8 (73)

(345)

CW038

(1270)

(1168)

(889)

(813)

(1219)

(883)

(203)

(940) 35-5/8 (905)

(787)

(711)

2-7/8 (73)

(361)

CW041 50

(1270)

(1168)

(889)

(813)

(1219)

(883)

(203)

(940)

35-5/8 (905)

(787)

(711)

2-7/8 (73)

(388)

CW051 74

(1880)

(1778)

(889)

(813)

(1829)

(883)

(203)

(1549)

35-5/8 (905)

(787)

(1295)

2-7/8 (73)

(494)

CW060

(1880)

(1778)

(889)

(813)

(1829)

(883)

(203)

(1549) 35-5/8 (905)

(787)

(1295)

2-7/8 (73)

(524)

CW076 99

(2515)

(2413)

(889)

(813)

(2464)

(883)

15-1/4 (387)

78-3/4 (2000)

35-5/8 (905)

(787)

60-3/4 (1543)

8-7/8 (225)

(599)

CW084 99

(2515)

(2413)

(889)

(813)

(2464)

(883)

15-1/4 (387)

78-3/4 (2000)

35-5/8 (905)

(787)

60-3/4 (1543)

8-7/8 (225)

(644)

Projection of Display Bezel 3/4" (19mm)

J

Overall Dimension J

Overall Dimension

C

Unit Cabinet

AOverall Dimension AOverall DimensionUnit and PlenumD

C

Air Return

Opening

Air Return

Opening

B

B K

Air Return Opening

Air Return Opening

2" (50.8mm)2"

(50.8mm)

72" (1829mm)

Shaded areas indicate a recommended clearance of 36" (914mm) for component access and filter removal.

EUnit Base

F

Unit B ase

1" (25.4mm)

1" (25.4mm)

1" (25.4mm)

1" (25.4mm)

31" (787.4mm)

1" (25.4mm)1" (25.4mm)

1" (25.4mm)

1" (25.4mm)

1" (25.4mm)

1" (25.4mm)

Pre-Filter Plenum

Projection of Display Bezel 3/4" (19mm)

F Plenum

Overall

2" (50.8mm)

9" (228mm)

72" (1829mm)

MODELS WITH PRE-FILTERS

GG

F

9" (228mm)9" (228mm)

20" (508mm)

20" (508mm)

20" (508mm)

Reheat or Humidifier Piping Opening (Optional Steam & Hot Water Only)

Reheat or Humidifier Piping Opening (Optional Steam & Hot Water Only)

Air Discharge Opening

L

E E

H

M

Floor Level

Floor Level

Standard Piping & Electrical Opening

Standard Piping & Electrical Opening

18" (457mm)

Air Discharge Opening

3" (76.2mm)

3" (76.2mm)

UNIT DIMENSIONAL DATA

DPN001659

Rev. 1

Floor Cutout Dimensions for Units with Forward-Curved (FC) Fans Floor Cutout Dimensions for Units with EC Fans

Specification 238123 - Page 13 of 119

Figure 3 Cabinet and floor planning dimensions for downflow chilled water models CW106 and CW114 with forward-curved fans

Chilled Water Model

Dimensions, inches (mm) Net Weight lb (kg)A B C D E F G H I

CW106 122

(3099)

(2997)

(889)

(787)

(3048)

(838)

35-5/8 (905)

(762)

(864)

(810)

CW114

(3099)

(2997)

(889)

(787)

(3048)

(838) 35-5/8 (905)

(762)

(864)

(873)

UNIT DIMENSIONAL DATA

Projection Of Display Bezel 3/4" (19mm)

Projection Of Display Bezel 3/4" (19mm)

*Note: "Electrical Opening" is also used for drain connection of optional steam generating canister humidifier

AOverall Dimension

G Overall

Dimension

G

Overall

Dimension A

Overall DimensionUnit and Plenum

BAir Return Opening

D

Air Return

Opening

BAir Return Opening

H Air Return

Opening

2" (50.8mm)

2" (50.8mm)

2" (50.8mm)

76" (1930mm)

E Unit Base

1" (25.4mm)

1" (25.4mm)

1" (25.4mm)

1" (25.4mm)

1" (25.4mm)

FLOOR CUTOUT DIMENSIONS

Air Discharge Opening

Pre-Filter Plenum

Standard Piping Opening

77" (1955.8mm)

Shaded area indicates a recommended clearance of 36" (914mm) for component access and filter removal

6" (152.4mm)

16-1/4" (412.75mm)

26" (660.4mm)

24" (609.6mm)

10" (254mm)

28" (711mm)

20" (508mm)

* Electrical Opening

F Unit Base

DPN001660

Rev. 0

9" (228mm)

76" (1930mm)

C

Unit Cabinet

Plenum

Overall

MODELS WITH PRE-FILTERS

C

2" (51mm)

E

*This drawing pertains to CW106 & CW114 with forward-curve blowers only.

Specification 238123 - Page 14 of 119

Figure 4 Cabinet and floor planning dimensions for downflow chilled water models CW089, CW106 and CW114 with EC fans

Model Weight lb (kg)

CW089 1925 (873)

CW106 1785 (810)

CW114 1925 (873)

33" (838mm)

36" (914mm)

35" (889mm)

120" (3048mm)

DPN001614

Rev. 1

Notes: Filters are accessible from front of unit only.

Electrical connections can be made from the bottom of unit.

FRONT VIEW

TOP VIEW

Shaded area indicates the required minimum clearance below the unit to lower the fans. Fans may also remain in unit if desired.

Striated area indicates the recommended minimum clearance for component access.

1-1/2" (38mm)

3/4" (19mm) Bezels

118" (2997mm)

Opening

30-3/4" (781mm) Opening

24" (610mm)

122" (3099mm)

76" (1930mm)

Specification 238123 - Page 15 of 119

Figure 5 Cabinet and floor planning dimensions for downflow chilled water models CW146 and CW181 with EC fans

Model Weight lb (kg)

CW146 2520 (1143)

CW181 2520 (1143)

24" (610mm)

48" (1219mm)

3/4" (20mm)

BEZELS

122" (3099mm)

1" (25mm) typical

Liebert

CW146

and CW181

47" (1194mm)

45" (1143mm)

120" (3044mm) 1-1/2"

(38mm)

94" (2388mm)

Total Height

117-11/16" (2989mm) Opening

42" (1067mm) Opening

18" (457mm)

Filter Plenum

45" (1143mm) Plenum

76" (1930mm) Base Unit

Reference DPN001693 for the electrical and plumbing requirements.

Filters are removed through the front of the plenum.

Note: Typical CW166 and CW181 with EC fans unit orientation shown.

Shaded area indicates the required minimum clearance below the unit to lower the fans into the floo r. Fans may also remain in their shipped position.

Striated area indicates the recommended minimum clearance for component access.

Filter Plenum (shipped separately)

CW146 or CW181 base unit

DPN001707

Rev. 2

Specification 238123 - Page 16 of 119

Figure 6 Cabinet and floor planning dimensions for upflow chilled water models CW026-CW084

Model # of

Blowers

Dimensions, inches (mm) Net Weight lb (kg)A B C D E F G H J K L M

CW026 1 50

(1270)

(1219)

(1168)

(1118)

(76)

(127)

(457)

15-7/8 (403)

18-5/8 (473)

2-3/16 (55)

17-3/8

(454) _ 760

(345)

CW038 1

(1270)

(1219)

(1168)

(1118)

(76)

(127)

(457) 15-7/8 (403)

18-5/8 (473)

2-3/16 (55)

17-3/8

(454) _

(361)

CW041 1 50

(1270)

(1219)

(1168)

(1118)

(76)

(127)

(457)

15-7/8 (403)

18-5/8 (473)

2-3/16 (55)

17-3/8 (454)

_ 855 (388)

CW051 2 74

(1880)

(1829)

(1778)

(1727)

(76)

(102)

(508)

15-7/8 (403)

14-5/8 (371)

2-3/16 (55)

20-3/8 (517)

11-1/4 (286)

(494)

CW060 2

(1880)

(1829)

(1778)

(1727)

(76)

(102)

(508) 15-7/8 (403)

14-5/8 (371)

2-3/16 (55)

20-3/8 (517)

11-1/4 (286)

(524)

CW076 2 99

(2515)

(2464)

(2413)

(1727)

6 1/2 (165)

(127)

(457)

15-7/8 (403)

18-5/8 (473)

3-1/4 (82)

20-5/8 (524)

12-5/8 (321)

(599)

CW084 2 99

(2515)

(2464)

(2413)

(1727)

6 1/2 (165)

(127)

(457)

15-7/8 (403)

18-5/8 (473)

3-1/4 (82)

20-5/8 (524)

12-5/8 (321)

(644)

E

UNIT DIMENSIONAL DATA

Display Bezel Projection 3/4" (19mm)

35-5/8" (905)

Overall

Dimension

35" (889)

A Overall Dimension

BUnit Base

33"

(838mm)

Unit B ase

72" (1829mm)

1" (25.4mm)

1" (25.4mm)

D

Air R eturn

O pening

1" (25.4mm)

1" (25.4mm) flange for plenum connection

FLOOR CUTOUT

DIMENSIONS

Models with Bottom Return

Air Return Opening

G Air Return Opening

Shaded area indicates a recommended clearance of 36" (914mm) for component access and filter removal

DPN001661

Rev. 0

MODELS WITH PRE-FILTERS

A return air grille may be ordered in place of the duct flange. See specification sheet for option supplied.

B C

F

33"

(838mm) 5-1/2" (139.7mm)

1-1/8"

(28.6mm)

22" (559mm)

Floor Level

Duct Flanges on 2 Blowers

Duct Flanges on 1 Blower

Note: Flanges provided on blower(s) outlet for supply air ducting.

Front of Unit

Front of Unit

L

K

K

J

J

J M

H

H

Specification 238123 - Page 17 of 119

Figure 7 Cabinet and floor planning dimensions for upflow chilled water models, CW106 and CW114

Filter Access (Both Ends)

Projection of Display Bezel 3/4 (19mm)

Air grille supplied on units with front return air only

Shaded areas indicate a recommended clearance of 36" (914mm) for component access and filter removal.

117-1/2" (2985mm)

DPN001662

Rev. 0

76" (1930mm)

DUCT CONNECTION DATA

MODELS WITH REAR RETURN

UNIT DIMENISONAL DATA

Air Return Opening

1" (25mm) Flange for Decorative Plenum Alignment

Flanges provided on blower outlets for supply air ducting

35" Overall (889mm) 122" Overall

(3099mm)32" (813mm) Plenum Flange

118" (2997mm)

Plenum Flange

2" (51mm)

1" (25mm)

2" (51mm)

120" Base (3048mm) 33" Base

(838mm)

24-1/4" (616mm)

22" (546mm)

2-1/4" (57mm)

4" (102mm)

Shaded area indicates a recommended clearance of 25" (635mm) for rear return filter removal on one end of the unit.

Specification 238123 - Page 18 of 119

Figure 8 Floor stand dimensions, optional steam, hot water reheat and humidifier piping entrances for CW026 - CW84 models with forward-curved fans

Height in. (mm)

H* Nominal J

9 (229) 6-1/2 (165)

12 (305) 9 (229)

15 (381) 12 (305)

18 (458) 15 (381)

21 (553) 18 (458)

24 (610) 21 (553)

Model

Dimensions, inches (mm)

Overall Width Of Unit A B C D E

CW026, CW038,

CW041

50 (1270) 48 (1219) 0 0 36 (914) 8 (203)

CW051, CW060 74 (1880) 72 (1829) 0 0 60 (1524) 8 (203)

CW076, CW084 99 (2515) 97 (2464) 48-1/2 (1232) 48-1/2 (1232) 77-3/4 (1975) 15-1/4 (362)

DPN001676

Rev. 0

B

A C

E

D

J

* Leveling feet are provided with ± 1-1/2" (38mm) adjustment from nominal height H.

1" (25.4mm)

8" (203mm)

(76.2mm)

STANDARD

PIPING AND

ELECTRICAL

ENTRANCE

LOCATION

Optional Steam/Hot Water Reheat or Humidifier Piping Entrance Location

Optional Turning Vane Field-Installed in Fan Discharge Opening For Rear or Front Air Discharge

62" (1574.8mm)

A + 2" (50.8mm) = Overall Width of Unit Air Discharge

Opening

1" (25.4mm)

2" (50.8mm)

16-1/4" (413mm)

LEG SUPPORT SUPPLIED

ON 18, 21 & 24" HIGH MODELS

Length of Vane = D - 1/8" (3mm)

H ±1-1/2" (38mm) *

33" (838mm)

56-3/4" (1441.5mm)

CROSS-BRACING LOCATION FOR 72" FRAMES ONLY

Specification 238123 - Page 19 of 119

Figure 9 Floor stand dimensions for CW106 and CW114 models with forward-curved fans

Height, in. (mm)

H* Nominal J

9 (229) 6 1/2 (165)

12 (305) 9 (229)

15 (381) 12 (305)

18 (458) 15 (381)

21 (553) 18 (458)

24 (610) 21 (533)

Model

Dimensions, inches (mm)

Overall Width of Unit A B C D E F G K

CW106

CW114

(3099)

(3048)

(1524)

(1524)

(838)

100-3/4 (2559)

16-1/4 (413)

8-1/4 (210)

(279)

J

*Leveling feet are provided with ± 1 1/2" (38mm) adjustment from nominal height H.

*This drawing pertains to CW106 & CW114 with forward curve blowers only.

Leg supports supplied on models 18", 21" and 24" high

Standard Piping and Electrical Entrance Location

1" (25.4mm)

1" (25.4mm)

D

B

A

K Air Discharge

Opening A + 2" (50.8mm) =

Overall Width of Unit

E

G

F

C

Length Of Vane=E-1/8"(3mm)

Optional turning vane field-installed in fan discharge opening for rear of front air discharge

DPN001677

Rev. 0

H ± 1-1/2" (38mm) *

Electrical Opening

Specification 238123 - Page 20 of 119

Figure 10 Floor stand and floor planning dimensions, downflow models CW026 - CW041 with EC fans

Dimension A* Height in (mm)

24 (610)

30 (762)

36 (914)

42 (1067)

48 (1219)

DPN002029

REV 0

NOTES:

1) This floor stand should be used when EC fans are will be lowered into a raised floor. The standard Liebert CW floor stand can be used if the fans will remain in their original, raised position.

2) All paneled sides of unit overhang the floor stand by 1" (25mm).

3) The floor stand used with EC units is not symmetrical, and its orientation to the Liebert CW is critical for lowering the EC fans. Unless the floor stand is installed in the correct position, the blowers will not lower into the floor stand.

4) The jack and jack support are shipped loose and are intended to be placed into position under each fan and utilized to lower or raise that fan as needed.

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

See Note 4

46-1/2" (1181mm) Support Feet Centers

3/4" (19mm)

3/4" (19mm)

3/4" (19mm) typ

3/4" (19mm)

1" (25mm)

31-1/2" (800mm)

14" (356mm)

48" (1219mm)

Piping access area

49-1/2" (1257mm)

7/8" (23mm)

33" (838mm)

34-1/2" (876mm) Overall Depth

3" (76mm) typ A*

Specification 238123 - Page 21 of 119

Figure 11 Floor stand and floor planning dimensions for downflow models CW051 and CW060 with EC fans

Point Description X, in (mm) Y, in (mm) Connection Size / Opening, in (mm)

CD

Condensate Drain*

60-7/8 (1547) 27-3/4 (705)

3/4 (19) FPT

W/Optional Condensate Pump** 1/2 (13) Cu Sweat

HUM Humidifier Supply Line 59-1/8 (1502) 28-5/8 (727) 1/4 (6) Cu Sweat

CWP

Chilled Water Piping Slot (Center) 66-9/16 (1691) 31-1/4 (794) 11 x 3 (279 x 76)

Supply & Return Piping Diameter — —

CW051: 1-5/8 (41)

CW060: 2-1/8 (54)

HV High Volt Electrical Connection 59-3/8 (1509) 30-3/4 (781) 3 (76)

LV Low Volt Electrical Connection 60-7/8 (1547) 29-1/4 (743) 7/8 (22)

B Blower Outlet Opening 4 (101) 33 (838) 51 x 31 (1295 x 787)

X

Y

CD

HUM

LV

HV

CWP

B

Note: Drawing Not To Scale.

Tolerance on all piping locating dimensions ± 1/2" (13mm).

Front View

Section A-A

Front of Unit

DPN002035

Rev. 0

* Field pitch Condensate Drain line a minimum of 1/8" (3.2 mm) per foot (305 mm).

All units contain a factory-installed condensate trap. Do not trap external to the unit.

Drain line may contain boiling water. Select appropriate drain system materials.

The drain line must comply with all local codes.

** Optional Condensate Pump to be field-installed under unit.

35" (889mm)

74" (1880mm)

31" (787mm) Typical Air

Discharge Area

24-7/16" (620mm) Typical Air

Discharge Area

24-1/8" (613mm)

Air Discharge Area

All Dimensions From Right Rear Corner Of Unit Including Panels

A A

Specification 238123 - Page 22 of 119

Figure 12 Floor stand and floor planning dimensions, downflow models CW076 and CW084 with EC fans

Dimension A* Height, in (mm)

24 (610)

30 (762)

36 (914)

42 (1067)

48 (1219)

DPN002027

Rev. 0

NOTE:

1) This floor stand should be used when EC fans are intended to be lowered under a raised floor. The standard Liebert CW floor stand can be used “if” the fans are to remain in their original raised position.

2) All paneled sides of unit overhang floorstand 1” (25mm).

3) The floor stand used with EC units is not symmetrical and its orientation to the Liebert CW is critical for lowering the EC fans. Unless the floor stand is installed in the correct position, the blowers will not lower into the floor stand.

4) Jack and jack support are shipped loose and are intended to be placed into position under each fan and utilized to lower or raise that fan as needed.

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

33" (838mm)

35" (889mm) Overall Depth

A*

1" (25mm) typ

3/4" (19mm)

3/4" (19mm)

3/4" (19mm)

1" (25mm)

98-1/2" (2502mm)

3" (76mm) typ

7/8" (23mm) typ

97" (2464mm)

32" (813mm)

Center Feet

Piping access area

25" (635mm)

31-1/2" (800mm)

47-3/4" (1213mm)

95-1/2" (2426mm) Support Feet Centers

See Note 4

Specification 238123 - Page 23 of 119

Figure 13 Floor stand and floor planning dimensions, downflow models CW089, CW106 and CW114 with EC fans

NOTES

1. This floor stand should be used when EC fans are intended to be lowered into the floor stand. The standard Liebert CW floor stand can be used†“if” the fans are to remain in their original raised position.

2. All paneled sides of unit overhang floorstand 1" (25mm).

3. The floor stand used with EC units is not symmetrical and its orientation to the

Liebert CW is critical for lowering the EC fans. Unless the floor stand is installed in the correct position, the blowers will not lower into the floor stand.

4. Jack and jack support are shipped loose and are intended to be placed into position under each fan and utilized to lower or raise that fan as needed.

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

See Note 4

Height, in. (mm)

A* 24 (610) 30 (762) 36 (914)

42 (1067)

Piping access area

20-1/4" (514mm)

1" (25mm)

31-1/2" (800mm)

3/4" (19mm)

32" (813mm)

Center Feet

3/4" (19mm)

118-1/2" (3010mm)

59-1/4" (1505mm)

120" (3048mm)

3/4" (19mm)

Typ 1" (25mm)

TYP

33" (838mm)

35" (889mm)

Overall Depth

121-1/2" (3086mm)

Overall Width

Support Feet Centers

A*

7/8" (22mm)

Typ 3" (76mm) TYP

DPN001629

Rev. 3

Specification 238123 - Page 24 of 119

Figure 14 Floor stand and floor planning dimensions, downflow models CW146 and CW181 with EC fans

NOTE:

1. This floor stand should be used when EC fans are intended to be lowered into the floor stand. The standard Liebert CW floor stand can be used if the fans are to remain in their original, raised position.

2. All paneled sides of unit overhang floor stand 1" (25mm).

3. The floor stand used with EC units is not symmetrical, and its orientation to the

Liebert CW is critical for lowering the EC fans. Unless the floor stand is installed in the correct position, the blowers will not lower into the floor stand.

4. The jack and jack support are shipped loose and are intended to be placed into position under each fan and used to lower or raise one fan at a time as needed.

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

20-1/4" (514mm)

1" (25mm)

3" (76mm)

7/8" (23mm)

TYP

A*

Height in (mm) A*

24 (610) 30 (762) 36 (914)

42 (1067) 48 (1219)

See Note 4120" (3048mm)

3/4" (19mm)

TYP

121-1/2" (3086mm) Overall Depth 47"

(1194mm) Overall Depth

45" (1143mm)

1" (25mm)

TYP

43-1/2" (1105mm)

3/4" (19mm)

Support Feet Centers

59-1/4" (1505mm)

Piping access area

118-1/2" (3010mm)

3/4" (19mm)

44" (1118mm)

CENTER FEET

DPN001696

Rev. 3

Specification 238123 - Page 25 of 119

Figure 15 Plenum dimensions for upflow chilled water models CW026 - CW084

Plenum Height in. (mm)

H J

20 (508) 1 (25)

22-3/4 (578) 2-3/8 (60)

34-3/4 (883) 2-3/8 (60)

Model

Plenum Dimensions, in. (mm) Grill Free Area ft2 (m2)A B C D E F

CW026, CW038,

CW041

50 (1270) 34 (864) 46 (1168) 32 (813) 44 (1118) 3 (76) 4.29 (.40)

CW051, CW060 74 (1880) 34 (864) 70 (1778) 32 (813) 60 (1524) 7 (178) 5.85 (.54)

CW076, CW084 99 (2515) 34 (864) 95 (2413) 32 (813) 70 (1778) 14-1/2 (368) 6.83 (.63)

DPN001678

Rev. 0

C

H

B F

E

A

D

C D

J

Flange is standard on all units except downflow models where it must be specified if required.

18" (457mm)

1" (25mm)

1" (25mm)

1" (25mm)

1" (25mm)

1" (25mm)

2" (50mm)

2" (50mm)

2" (50mm)

NOTE: Flanges provided on blower(s) outlet for supply air ducting when solid panel plenum is used.

Both top duct openings and front grille are shown. See specification sheet for specific application.

Specification 238123 - Page 26 of 119

Figure 16 Plenum dimensions for upflow chilled water models CW106 and CW114

Plenum Height, in.(mm)

K L

20 (508) 1 (25)

22-3/4 (578) 2-3/8 (60)

34-3/4 (883) 2-3/8 (60)

Model

Plenum Dimensions, in. (mm) Grille Free

Area, ft2 (cm2)A B C D E F G H J

CW106,

CW114

(3099)

(864)

(2997)

(813)

(1118)

3-1/2 (89)

(102)

(178)

(406)

10.14 (.94)

C D

B

C D

A

E E

J

K

L

F G

H

DPN001679

Rev. 0

Flange is standard on all units except downflow models where it must be specified if required.

18" (457mm)

1" (25mm)

1" (25mm)

1" (25mm)

1" (25mm)

2" (50mm) 2" (50mm)

NOTE: Flanges provided on blower(s) outlet for supply air ducting when solid panel plenum is used.

Both top duct openings an front grille are shown. See specification sheet for specific application.

Specification 238123 - Page 27 of 119

Figure 17 Blower duct and deck dimensions for CW106 and CW114 upflow chilled water models

Model Blower Supply Motor Hp

Dimensions, in. (mm)

A B C D E F

CW106

CW114

15x15 Top Front 10-15 27-1/2

(699) 3-1/2 (89)

18-11/16 (475)

16-3/16 (411)

(254)

4-1/2 (114)

Top Rear 10-15 27-1/2 (699)

12-5/16 (313)

18-11/16 (475)

16-3/16 (411)

(254)

4-1/2 (114)

15x11 Top Front

10-15 30 (762)

3-1/2 (89)

14-3/4 (375)

16-3/16 (411)

(254)

4-1/2 (114)20

Top Rear 10-20 30 (762)

12-5/16 (313)

14-3/4 (375)

16-3/16 (411)

(254)

4-1/2 (114)

F

35" (889mm)

Ref.

A B

D

CEEC C

122" Ref (3099mm)

76" (1930mm)

Ref.

Duct Flanges on Three Blowers

Blower Duct Flange Location

Front of Unit Front or Rear Air Supply

Top of Unit

Blower Deck

DPN001663

Rev. 0

Specification 238123 - Page 28 of 119

Figure 18 Filter plenum dimensions, downflow models CW146 and CW181 with EC fans

24" (610mm)

CW146 or CW181 base unit

Filter Plenum (Shipped Separately)

Striated area indicates recommended minimum clearance for component access

Filters are removed through the front of the plenum

Shaded area indicates the minimum clearance below the unit to lower the fans into the floor. Fans may remain in their shipped position.

DPN001707

Rev. 2

76" (1930mm Base Unit

94" (2388mm)

Total Height

45" (1143mm) Plenum

18" (457mm)

Filter Plenum

3/4" (20mm) Bezels

42" (1067mm) Opening

117-11/16" (2989mm) Opening

1-1/2" (38mm)

120" (3044mm)

45" (1143mm)

47" (1194mm)

1" (25mm) typ

122" (3099mm)

48" (1219mm)

Specification 238123 - Page 29 of 119

Equipment Inspection and Handling

4.0 EQUIPMENT INSPECTION AND HANDLING

Upon arrival of the unit and before unpacking it, verify that the labeled equipment matches the bill of lading. Carefully inspect all items for damage, either visible or concealed. For initial access use a 7/32" Allen wrench for panel removal. Damage should be immediately reported to the carrier and a damage claim filed with a copy sent to Emerson Network Power or to your sales representative.

4.1 Packaging Material

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

SAFETY INFORMATION

NOTICE

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

The unit may be too tall to fit through a doorway while on the skid. Measure the unit and doorway heights and refer to the installation plans to verify clearances prior to moving the unit.

NOTICE

Risk of forklift running into the unit. Can cause unit damage.

Keep the tines of the forklift level and at a height to fit below the skid and unit to prevent damage.

NOTICE

Risk of improper storage. Can cause unit damage.

Keep the Liebert CW upright, indoors and protected from dampness, freezing temperatures and contact damage.

! WARNING

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

Read all of the following instructions before attempting to move the unit, lift it, remove packaging or prepare the unit for installation.

! WARNING

Risk of improper moving. Unit can tip over and cause equipment damage, injury or death.

Use only lifting equipment that is rated for the unit weight by an OSHA-certified rating organization. Unit weights are listed in Table 1 of this manual.

Use the center of gravity indicators (see Figure 23) on the unit to determine the position of the slings. The center of gravity varies depending on the unit size and selected options.

The slings must be equally spaced on either side of the center of gravity indicator.

! CAUTION

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

Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and glasses should attempt to move the unit, lift it, remove packaging or prepare the unit for installation.

R

Specification 238123 - Page 30 of 119

Figure 19 Equipment recommended for handling the Liebert CW

If possible, transport the Liebert CW with a forklift or pallet jacks. If that is not possible, use a crane with slings and spreader bars.

• If using a forklift or pallet jack, make sure that the forks (if adjustable) are spread to the widest distance that will fit under the skid.

Ensure the fork length is suitable for the unit length.

• When moving the packaged Liebert CW with a forklift, lift the unit from either end of the skid that has the indicated labeling no higher than 4" (102mm) off the floor. Ensure that the opposite end still touches the floor.

• The unit is to be pulled by the forklift—If the unit must be lifted higher than 4" (102mm) great care must be exercised: Personnel who are not directly involved in moving the unit must be kept 20' (5m) or farther from the lift point of the unit.

• Always refer to the location of the center of gravity indicators when lifting the Liebert CW (see Figure 23).

4.2 Unpacking the Unit

Remove outer packaging when ready to install the unit.

1. Remove the exterior stretch wrap packaging material from the unit, exposing the protective corner and side packaging planks.

2. Remove the corner and side packaging planks from the unit, exposing the bag over the unit.

3. Remove the bag from the unit when ready to remove the skid and install the unit.

Figure 20 Removing packaging

Spreader Bars and Slings

Piano Jacks

Pallet Jack

Forklift

Step 1

196713 Rev. 0

Step 2 Step 3

Specification 238123 - Page 31 of 119

4.2.1 Removing the Unit from the Skid With a Forklift

1. Align a forklift with either the front or rear side of the unit (see Figure 21).

2. Insert the tines of the forklift completely under the base of the Liebert CW.

3. Remove the brackets holding the Liebert CW to the skid.

4. Lift the unit off the skid—no more than 4" (1052mm)—and remove the skid.

Figure 21 Remove the unit from the skid

! WARNING

Risk of improper moving. Unit can tip over and cause equipment damage, injury or death.

Use the center of gravity indicators on the unit to determine the entry points for the tines (see Figure 23). The center of gravity varies depending on the unit size and selected options.

The forklift’s tines must be equally spaced on either side of the center of gravity indicator. The forklift’s tines must be locked to the widest possible spread that will fit under the unit.

! WARNING

Risk of improper moving. Unit can tip over and cause equipment damage, injury or death.

Ensure that the tines are level—not angled up or down.

The tines must be at a height that will allow proper clearance under the unit.

Ensure that the tines extend beyond the opposite side of the unit.

Step 1 Step 2

Step 3

196713 Rev. 0

Step 4

Specification 238123 - Page 32 of 119

4.2.2 Moving the Unit to the Installation Location with Piano Jacks

1. With the Liebert CW elevated, position piano jacks at each end of the unit (see Figure 22).

2. Lower the unit to a height suitable for the piano jacks and place protective material between the

Liebert CW and the piano jacks.

3. Secure the unit to the piano jacks and remove the forklift.

4. Use the piano jacks to move the unit for installation. At least two people are required to move the

Liebert CW with the piano jacks.

Figure 22 Moving the unit to its installation location

4.2.3 Removing Piano Jacks

1. Lower the unit as much as the piano jacks will allow.

2. Undo all strapping holding the piano jacks to the unit.

3. Use a pry bar or similar device to lift one end of the unit just enough to allow removal of the piano jack from that end.

4. Repeat Step 3 to remove the piano jack on the opposite end.

5. Remove all material that might have been used to protect the unit from the piano jacks and strapping.

Step 1 Step 2

Step 3

196713

Specification 238123 - Page 33 of 119

4.2.4 Removing Liebert CW from Skid Using Rigging

1. Locate the center of gravity indicator—the center of gravity varies according to a unit’s size and options.

2. Space the slings equidistant on either side of the center of gravity indicator (see Figure 23).

Figure 23 Locate center of gravity marker and place slings

3. Place the slings between the bottom rails of the Liebert CW and the top of the skid.

4. Use spreader bars or a similar device and padding to ensure the Liebert CW will not be damaged when the unit is lifted (see Figure 23). Lifting will force the slings toward the Liebert CW and the slings may damage the unit unless it is properly protected.

5. Move the Liebert CW to its installation location.

6. Remove the brackets securing the Liebert CW to the shipping skid.

7. Lift the Liebert CW off the skid.

8. Move the skid from under the unit.

9. If the unit is at its installation location, lower it to the floor and remove the slings and spreader bars.

If the Liebert CW must be moved, refer to 4.2.2 - Moving the Unit to the Installation Loca-tion with Piano Jacks.

! WARNING

Risk of top heavy unit tipping over. Can cause cause equipment damage, injury or death.

Use only lifting equipment that is rated for the unit weight by an OSHA-certified rating organization. Unit weights are listed in Table 1 of this manual.

Use the center of gravity indicators (see Figure 23) on the unit to determine the position of the slings. The center of gravity varies depending on the unit size and selected options.

The slings must be equally spaced on either side of the center of gravity indicator.

NOTE

Unit is shown without packaging. These instructions may be applied with or without the outer packaging in place, with the panels attached or with the panels removed.

NOTE

Depending on final installation location, the skid may need to remain under the unit.

Therefore, the lag bolts and brackets would not yet be removed.

Equal Space

Equal Space

Illustration shows rigging for one possible center of gravity on the Liebert CW. The center of gravity varies with the model’s options and size.

196713 Rev.0

Slings Equidistant from Each Side of

Indicator

Center of Gravity Indicator

Specification 238123 - Page 34 of 119

Figure 24 Using rigging to lift Liebert CW off skid

196713

Specification 238123 - Page 35 of 119

EC Fan—Lowering and Removing

5.0 EC FAN—LOWERING AND REMOVING

Liebert CW downflow models CW106, CW114 and CW181 can be equipped with EC fans that can be operated either in their fully raised position or lowered into the floor stand for increased efficiency from reduced air resistance.

The fans are also removable, easing maintenance and replacement.

5.1 Lowering the EC Fans into the Floor Stand

1. Remove the middle and bottom panels from the front of the unit.

2. For ease of fan lowering, Emerson recommends removing the infrared humidifier using the approved infrared humidifier removal procedure.

3. Position the factory-supplied jack and jack support under the fan to be lowered.

4. Raise the jack to safely support the fan before removing any hardware.

5. For Liebert CW models CW089-CW114, remove the two guide rails and store them; they will be needed if the fan module is removed.

6. Remove the six 1/2" hex head screws, and, on CW026-CW114 models, remove the “Z” bracket(s) using the socket wrench. Retain the hardware for later steps.

7. Using the jack, slowly lower the fan module until it rests on the frame of the unit.

NOTICE

Risk of equipment snagging cables and wiring. Can cause unit damage.

Monitor the position of the fan harnesses and other parts while lowering the fan to be sure that they are not caught or pinched.

8. Secure the fan module in the fully lowered position by re-installing the “Z” bracket(s), using the retained hex-head screws (not applicable on CW146 and CW181).

For CW051 and CW060 models, the fan module is secured to the center frame support. The “Z” brackets will be used to secure the fan at the outer attachment point.

! WARNING

Risk of very heavy 145 lb. (65.7kg) fan modules dropping downward suddenly. Can cause injury or death. Support fan modules before removing mounting hardware.

Use caution to keep body parts out of the fan modules pathway during repositioning.

Only properly trained and qualified personnel should work on this equipment.

! CAUTION

Risk of handling heavy and lengthy parts. Can cause personal injury and equipment damage.

Cabinet panels can exceed 5ft. (1.5m) in length and weigh more than 35lb. (15.9kg). Follow relevant OSHA lifting recommendations and consider using a two-person lift for safe and comfortable removal and installation of cabinet panels. Only properly trained and qualified personnel wearing appropriate safety headgear, gloves and shoes should attempt to remove or install cabinet panels.

NOTE

The Liebert CW unit should be used with the fans either in their original raised position or with the fans in their fully lowered position. Suspension of fans in an intermediate position will directly affect product performance and is not recommended.

NOTE:

A properly positioned jack will be centered between the first and second set of tabs on the jack support. The jack will be biased towards the front of the unit.

NOTE

Not all hardware retained will be used to secure the fans in the lowered positioned.

Specification 238123 - Page 36 of 119

Figure 25 EC fan…