Unit Piping Connection Locations; Unit Field Piping Locations; Plenum Field Piping Locations; Optional Plenum Reheat Schematics - Vertiv Liebert CW Series Installer And User Manual

UNIT PIPING CONNECTION LOCATIONS

CW038 - CW084 UPFLOW MODELS W/ FORWARD CURVED BLOWERS

UNIT FIELD PIPING LOCATIONS

Piping stubbed out inside unit end compartment for field
connection through 2 5/8" x 10 3/4" (66 x 273mm)
opening as shown. Piping may also exit through bottom or top of
end compartment by field cutting an opening in a suitable location
(except bottom return air units).
1 1/32"
26mm
2 5/8"
67mm
10 3/4"
273mm
7 1/2"
190mm
UNIT LEFT
END PANEL
RETURN
ACTUATOR
SUPPLY
Y-STRAINER HOT WATER REHEAT COIL
OPTIONAL HOT WATER REHEAT
(2-WAY VALVE)
Factory Provided Piping Connection Sizes in.
A B
MODELS
OD CU OD CU NPT FEMALE
CW038 1 3/8 1 3/8
CW041
1 5/8 1 5/8
CW051
CW060
CW076 2 1/8 2 1/8
CW084
DPN001668
Page :1 /1
LIEBERT CW
A - Chilled Water Supply Line.
1"
(Line is stubbed down, field
25mm
install elbow for side
Rear Panel
connection).
B - Chilled Water Return Line.
(Line is stubbed down, field
install elbow for side
connection).
1/4" OD CU Humidifier Water
Supply Line.
Condensate Drain. Field pitch a min. of
1/8" (3mm) per ft. (305mm). 3/4" NPT
for units without factory installed
condensate pump. Do not install an
external trap.
1/2" OD CU for units with factory
installed condensate pump.
Piping outlet location on units
w/rear return option.
NOTE: Install all piping

OPTIONAL PLENUM REHEAT SCHEMATICS

RETURN
SUPPLY
Y-STRAINER
OPTIONAL HOT WATER REHEAT
C D E
OD CU NPT FEMALE
1/2 5/8 1/2
3/4 7/8 3/4

PLENUM FIELD PIPING LOCATIONS

For separate steam or hot water plenum in UPFLOW units, piping
may exit through bottom, top or sides by field
cutting an opening in a suitable location. Steam or hot water plenum
piping connections are located at the left side of the plenum.
per local codes.
ACTUATOR
HOT WATER REHEAT COIL
(3-WAY VALVE)
F
OD CU
5/8
7/8
PLENUM LEFT
END PANEL
C - Steam Reheat Supply Line.
F - Hot Water Reheat Return Line.
E - Steam Reheat Return Line(Field install
factory supplied steam trap with vacuum
breaker).
D - Hot Water Reheat Supply
Line.
ACTUATOR
SUPPLY
Y-STRAINER
RETURN
STEAM REHEAT COIL
STEAM TRAP
OPTIONAL STEAM REHEAT
REV DATE : 6/17
REV : 4