Liebert DS User Manual
Piping Schematics
101
Figure 76 Primary connection locations—upflow, water/glycol/GLYCOOL, 28-42kW (8-12 ton), all
compressor models
Point
Description
X
in. (mm)
Y
in. (mm)
Connection Size / Opening
in. (mm)
W1
Water/Glycol/GLYCOOL Access (Bottom)
79-15/16 (2030)
9 (229)
3-1/2 x 8 (89 x 203)
W2
Water/Glycol/GLYCOOL Access (Top)
79-15/16 (2030)
9 (229)
3-1/2 x 8 (89 x 203)
W3
Water/Glycol/GLYCOOL Access (Side)
—
—
6 x 17-3/16 (152 x 437)
WS
Water/Glycol/GLYCOOL Supply
—
—
1-5/8 Cu Sweat
WR
Water/Glycol/GLYCOOL Return
—
—
1-5/8 Cu Sweat
CGD
Condensate Gravity Drain
—
—
3/4 FPT
CPD
Condensate Pump Discharge (Opt)
56-1/4 (1429)
11-1/8 (282)
1/2 Cu Sweat
HUM
Humidifier Supply Line
56-1/4 (1429)
9-1/8 (232)
1/4 Cu Sweat
ECS**
Econ-O-Coil Supply
56 (1423)
7-5/16 (186)
1-5/8 Cu Sweat
ECR**
Econ-O-Coil Return
56 (1423)
4-1/2 (114)
1-5/8 Cu Sweat
E1
Electrical Connection (High Voltage)
52-3/8 (1330)
30 (762)
2-1/2
E2
Electrical Connection (High Voltage)
46-7/8 (1191)
30 (762)
2-1/2
LV1
Electrical Connection (Low Voltage)
19-1/2 (495)
29-1/16 (738)
7/8
LV2
Electrical Connection (Low Voltage)
19-1/2 (495)
30-1/2 (775)
7/8
LV3
Electrical Connection (Low Voltage)
19-1/2 (495)
31-15/16 (811)
7/8
* 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.
** Supplied on Dual-Cool systems only (4-pipe system)
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.
** Supplied on Dual-Cool systems only (4-pipe system)
NOTES:
1. Drawing not to scale.
2. Tolerance on all piping dimensions is ± 1/2" (13mm).
3. Field-routed alternatives for water/glycol connections.
4. See submittal page DPN001120 for blower outlet
and deck dimensional data.
1. Drawing not to scale.
2. Tolerance on all piping dimensions is ± 1/2" (13mm).
3. Field-routed alternatives for water/glycol connections.
4. See submittal page DPN001120 for blower outlet
and deck dimensional data.
All dimensions
from rear corner
of unit including
panels
from rear corner
of unit including
panels
X
0
Y
3-7/8"
(98mm)
14-1/4"
(362mm)
15-7/8"
(403mm)
Left Side Section View
Front Section View
(Left Front Panel Not Shown)
Top View of Unit
6"
(152mm)
17-3/16"
(437mm)
W3
WS
WS
CGD*
CGD*
DPN001179
Rev. 2
Rev. 2
WR
Front
E1
W1,
E2
LV1
LV2
LV3
W2
8"
(203mm)
ECS
ECR
HUM
Blower
Outlet
CPD
4
3
2-7/8"
(73mm)
86"
(2184mm)
3-1/2"
(89mm)
35"
(889mm)
3
3
3
3
3
3