Liebert Precision Cooling System DS - Manual (Page 112)

Piping Schematics
102
Figure 77 Primary connection locations—upflow, air-cooled, 53-77kW (15-22 ton), semi-hermetic
compressor models
Point Description
X
inches (mm)
Y
inches (mm)
Connection Size / Opening
inches (mm)
R1 Refrigerant Access (Top) 83-3/4 (2127) 1-7/8 (48) 22-1/2 x 15-3/16 (572 x 386)
R2 Refrigerant Access (Bottom) 86 (2184) 13-7/8 (352) 16-7/16 x 4 (418 x 102)
53kW (15 ton)/70 & 77kW (20 & 22 ton)
L1 Liquid Line System 1 97 (2464) 16-3/4 (425) 1/2 / 5/8 Cu Sweat
L2 Liquid Line System 2 93-5/16 (2370) 16-3/4 (425) 1/2 / 5/8 Cu Sweat
G1 Hot Gas Discharge 1 90-5/8 (2302) 16-5/8 (422) 7/8 / 1-1/8 Cu Sweat
G2 Hot Gas Discharge 2 88 (2235) 16-5/8 (422) 7/8 / 1-1/8 Cu Sweat
R3 Refrigerant Access (Side) - - 6 x 17-3/16 (152 x 437)
CGD* Condensate Gravity Drain - - 3/4 FPT
CPD Condensate Pump Discharge (Opt) 79-5/16 (2015) 11-7/8 (302) 1/2 Cu Sweat
HUM Humidifier Supply Line 79-5-16 (2015) 9-7/8 (251) 1/4 Cu Sweat
ECS** Econ-O-Coil Supply 78-5/8 (1998) 7-7/8 (200) 2-1/8 Cu Sweat
ECR** Econ-O-Coil Return 78-5/8 (1998) 4-5/8 (117) 2-1/8 Cu Sweat
E1 Electrical Connection (High Voltage) 75-3/8 (1915) 30 (762) 2-1/2
E2 Electrical Connection (High Voltage) 69-7/8 (1775) 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)
NOTES:
1. Drawing not to scale.
2. Tolerance on all piping dimensions
is ± 1/2" (13mm).
3. Field routed alternatives for refrigerant
gas and liquid line connection points.
4. See submittal page DPN001191 for
blower outlet and deck dimensional data.
6"
(152mm)
20-1/16"
(509mm)
Factory Location
DPN001212
Rev. 2
LEFT SIDE SECTION VIEW OF UNIT
FRONT SECTION VIEW OF UNIT
(Left Front Panel Not Shown)
14-1/4"
(362mm)
15-7/8"
(403mm)
3-7/8"
(98mm)
17-3/16"
(437mm)
TOP VIEW OF UNIT
All dimensions from
rear corner of unit
including panels
X O
Y
16-7/16"
(418mm)
15-3/16"
(386mm)
22-1/2"
(572mm)
35"
(889mm)
109" (2769mm)
Blower
Outlet
Blower
Outlet
4"
(102mm)
Front of Unit
* 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 Cooling Systems only
3
3
3