Liebert DS User Manual
Piping Schematics
95
Figure 70 Primary connection locations—downflow, air-Cooled, 53-77kW (15-22 ton) with scroll
compressor models
Point
Description
X
inches (mm)
Y
inches (mm)
Connection Size / Opening
inches (mm)
R
Refrigerant Access
81-3/4 (2076)
14-3/4 (374)
12-3/16 x 4 (310 x 102)
53kW (15ton) / 70 & 77kW (20 & 22ton)
L1
Liquid Line System 1
94-11/16 (2405)
16-3/4 (425)
1/2 / 5/8 Cu Sweat
L2
Liquid Line System 2
91-7/8 (2334)
16-3/4 (425)
1/2 / 5/8 Cu Sweat
G1
Hot Gas Discharge 1
88-3/4 (2254)
16-3/8 (416)
7/8 / 1-1/8 Cu Sweat
G2
Hot Gas Discharge 2
85-9/16 (2173)
16-3/8 (416)
7/8 / 1-1/8 Cu Sweat
CD
Condensate Drain *
69-1/4 (1759)
30 (762)
3/4 FPT
W/ Optional Pump
69-1/4 (1759)
30 (762)
1/2 Cu Sweat
HUM
Humidifier Supply Line
76-1/2 (1943)
29 (736)
1/4 Cu Sweat
ECS**
Econ-O-Coil Supply
78-5/8 (1997)
22-1/4 (565)
2-1/8 Cu Sweat
ECR**
Econ-O-Coil Return
72 (1829)
29 (737)
2-1/8 Cu Sweat
HS
Hot Water Reheat Supply
Consult Factory
HR
Hot Water Reheat Return
Consult Factory
E1
Electrical Connection (High Volt)
78-1/2 (1994)
31-1/8 (790)
2-1/2
E2
Electrical Connection (High Volt)
75-3/8 (1915)
31-1/8 (790)
2-1/2
LV1
Electrical Connection (Low Volt)
1-7/8 (48)
28-1/2 (724)
7/8
LV2
Electrical Connection (Low Volt)
1-7/8 (48)
30-1/4 (768)
7/8
LV3
Electrical Connection (Low Volt)
1-7/8 (48)
32 (813)
7/8
B1
Blower Outlet (15 x 15)
23-1/8 (587)
18-1/16 (459)
18-3/4 x 16-1/16 (476 x 408)
Blower Outlet (15 x 11)
27-3/4 (705)
18-1/16 (459)
14-3/4 x 16-1/16 (375 x 408)
B2
Blower Outlet (15 x 15)
50-3/8 (1280)
18-1/16 (459)
18-3/4 x 16-1/16 (476 x 408)
Blower Outlet (15 x 11)
54-3/8 (1381)
18-1/16 (459)
14-3/4 (375) x 16-1/16 (408)
* 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.
with all local codes.
** Supplied on Dual Cool systems only (4 pipe system)
Section A-A
Front View
16-1/16"
(408mm)
A
A
X
Y
O
Tolerance on all
piping dimensions
is ± 1/2" (13mm)
piping dimensions
is ± 1/2" (13mm)
Note: Drawing not to scale
DPN000929
Rev. 2
Rev. 2
4" (102mm)
LV3
LV2
LV1
ECS
HUM
CD
ECR
E1 E2
B2
12-3/16"
(310mm)
L1 L2
G 1 G2
Blower
Outlet
B1
Blower
Outlet
R
98"
(2489mm)
Front of Unit
35"
(889mm)
All dimensions
from rear corner
of unit including
panels
from rear corner
of unit including
panels