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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.
** Supplied on Dual Cool systems only (4 pipe system)
Section A-A
Front View
16-1/16"
(408mm)
AA
X
Y
O
Tolerance on all
piping dimensions
is ± 1/2" (13mm)
Note: Drawing not to scale
DPN000929
Rev. 2
4" (102mm)
LV3
LV2
LV1
ECS
HUM
CD
ECR
E1 E2
B2
12-3/16"
(310mm)
L1 L2 G1 G2
Blower
Outlet
B1
Blower
Outlet
R
98"
(2489mm)
Front of Unit
35"
(889mm)
All dimensions
from rear corner
of unit including
panels