Emerson CW089, Design Manual

Page: 74 / 132

Piping
Liebert
®
CW
™
System Design Manual 64
5.4 Piping Connections—Upflow Models
Figure 5-12 Piping connections, upflow, CW026 – CW084
Factory-provided Piping Connection Sizes, in.
Model No.
A
OD Cu
B
OD Cu
C
NPT Female
D
OD Cu
E
NPT Female
F
OD Cu
CW026 1-1/8 1-1/8
1/2 5/8 1/2 5/8 CW038 1-3/8 1-3/8
CW041
1-5/8 1-5/8
CW051
3/4 7/8 3/4 7/8
CW060
2-1/8 2-1/8 CW076
CW084
OPTIONAL STEAM HUMIDIFIER OPTIONAL HOT WATER REHEAT
OPTIONAL STEAM REHEAT OPTIONAL HOT WATER REHEAT
(2-WAY VALVE)
(3-WAY VALVE)
HOT WATER REHEAT COIL
ACTUATOR
RETURN
SUPPLY
Y-STRAINER
STEAM REHEAT COIL
ACTUATOR
SUPPLY
Y-STRAINER
RETURN
STEAM TRAP
RETURN
SUPPLY
Y-STRAINER
STEAM HUMIDIFIER
STEAM TRAP
RETURN
ACTUATOR
SUPPLY
Y-STRAINER
HOT WATER REHEAT COIL
OPTIONAL PLENUM REHEAT SCHEMATICS
1/2" NPT Female Steam Humidifier Supply Line.
1/2" NPT Female Steam Humidifier Return Line.
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.
NOTE: Install all piping
per local codes.
PLENUM LEFT
END PANEL
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.
UNIT FIELD PIPING LOCATIONS
Piping stubbed out inside unit end com partment 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).
A
- Chilled Water Supply Line.
(Line is stubbed down, field
install elbow for side
connection).
B
- Chilled Water Return Line.
(Line is stubbed down, field
install elbow for side
connection).
1/4" OD CU Humidifier Water
Supply Line.
Piping outlet location on units
w/rear return option.
UNIT LEFT
END PANEL
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.
1"
25mm
Rear Panel
1 1/32"
26mm
2 5/8"
67mm
10 3/4"
273mm
7 1/2"
190mm
DPN001668
Rev. 2