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Piping Schematics
92
Figure 67 Primary connection locations—downflow, air-Cooled, 28-42kW (8-12 ton) with scroll
compressor models
Point Description
X
inches (mm)
Y
inches (mm)
Connection Size / Opening
inches (mm)
R Refrigerant Access 59-5/16 (1507) 14-3/4 (375) 11-3/16 x 4 (284 x 102)
L1 Liquid Line System 1 69-15/16 (1776) 16-13/16 (411) 1/2 Cu Sweat
L2 Liquid Line System 2 67-5/8 (1718) 16-13/16 (411) 1/2 Cu Sweat
G1 Hot Gas Discharge 1 65-1/2 (1664) 16-13/16 (411) 5/8 Cu Sweat
G2 Hot Gas Discharge 2 62-7/16 (1586) 16-13/16 (411) 5/8 Cu Sweat
CD
Condensate Drain* 46 (1168) 29-1/2 (749) 3/4 FPT
W/ Optional Pump 46 (1168) 29-1/2 (749) 1/2 Cu Sweat
HUM Humidifier Supply Line 53-1/2 (1359) 29 (737) 1/4 Cu Sweat
ECS Econ-O-Coil Supply 54-7/8 (1394) 22-9/16 (573) 1-5/8 Cu Sweat
ECR Econ-O-Coil Return 49-3/8 (1254) 30-3/4 (781) 1-5/8 Cu Sweat
HS Hot Water Reheat Supply Consult factory
HR Hot Water Reheat Return Consult factory
E1 Electrical Connection (High Volt) 55-1/2 (1410) 31-1/4 (794) 2-1/2
E2 Electrical Connection (High Volt) 52-7/16 (1332) 31-1/4 (794) 2-1/2
LV1 Electrical Connection (Low Volt) 2-1/4 (57) 27 (686) 7/8
LV2 Electrical Connection (Low Volt) 2-1/4 (57) 29 (737) 7/8
LV3 Electrical Connection (Low Volt) 2-1/4 (57) 31 (787) 7/8
B Blower Outlet 21-15/16 (557) 18-1/16 (459) 18-3/4 x 16-1/16 (476 x 408)
* Field-pitch condensate drain line a minimum of 1/8" (3.2mm) per foot (305mm). 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.
4" (102 mm)
11-3/16"
(284mm)
ECS
HUM
CD
ECR
E1 E2
R
Blower
Outlet
Section A-A
Front View
16-1/16"
(408mm)
B
AA
LV3
LV2
LV1
X
Y
O
35"
(889 mm)
All dimensions
from rear corner
of unit including
panels
Tolerance on all
piping dimensions
is ± 1/2" (13mm)
73"
(1854mm )
Front of Unit
Note: Drawing not to scale
DPN000804
Rev. 2
L1 L2 G1 G2