Piping
Liebert
®
CW
™
System Design Manual 60
Figure 5-8 Primary connection locations, downflow, CW146 and CW181 with EC fans
Point Description
X
In. (mm)
Y
In. (mm) Connection Size / Opening
CD
Condensate Drain * 110 (2794) 35 (889) 1-1/4” FPT
w/ Optional Pump 110 (2794) 35 (889) 1/2” Cu Sweat
HUM Humidifier Supply Line 101 (2565) 43 (1092) 1/4” Cu Sweat
CWS
2-Way Chilled Water Supply 117 (2972) 37 (940) 3-1/8”
3-Way Chilled Water Supply 117 (2972) 37 (940) 3-1/8”
CWR
2-Way Chilled Water Return 117 (2972) 30 (762) 3-1/8”
3-Way Chilled Water Return 117 (2972) 30 (762) 3-1/8”
E1 Electrical Conn. (High Volt) 113 (2870) 43 (1092) 2"
E2 Electrical Conn. (High Volt) 110 (2794) 43 (1092) 2"
LV1 Electrical Conn. (Low Volt) 2-1/2 (64) 36 (914) 7/8”
LV2 Electrical Conn. (Low Volt) 2-1/2 (64) 37-1/2 (953) 7/8”
LV3 Electrical Conn. (Low Volt) 2-1/2 (64) 39 (991) 7/8”
B Blower Outlet 4-1/2 (114) 44 (1118) 93" x 41" (2362 mm x 1041 mm)
* 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.
FRONT OF UNIT
FRONT VIEW
SECTION A-A
NOTE: Drawing not to scale.
Tolerance on
all piping dimensions
is ± 1/2" (13mm).
ALL DIMENSIONS FROM
REAR CORNER OF UNIT
INCLUDING PANELS
E2
HUM
CD
B
LV1
LV2
O
X
Y
AA
CWS
CWR
41"
1041mm
TYP
AIR DISCHARGE
AREA
47"
1194mm
122"
3099mm
LV3
E1
29 3/8"
746mm
TYP
AIR DISCHARGE
AREA
DPN001693
Rev. 2