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Piping Schematics
91
Figure 66 Primary connection locations—downflow, air-cooled, 28-42kW (8-12 ton), semi-hermetic
compressor models
Point Description
X
inches (mm)
Y
inches (mm)
Connection Size / Opening
inches (mm)
R Refrigerant Access 63 (1600) 13-13/16 (351) 16-7/16 x 4 (418 x 102)
L1 Liquid Line System 1 79-3/16 (2011) 16-3/4 (425) 1/2 Cu Sweat
L2 Liquid Line System 2 76-1/2 (1943) 16-3/4 (425) 1/2 Cu Sweat
G1 Hot Gas Discharge 1 73-7/8 (1876) 16-3/4 (425) 5/8 Cu Sweat
G2 Hot Gas Discharge 2 70-1/8 (1780) 16-3/4 (425) 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 (558) 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.
Blower
Outlet
B
LV1
LV2
LV3
ECS
HUM
ECR
E1 E2
CD
FRONT OF UNIT
86"
(2184 mm)
16-7/16"
(418mm)
L1 L2 G1 G2
R
AA
Front View
Section A-A
NOTE: Drawing not to scale.
Tolerance on all
piping dimensions
is ±1/2" (13mm)
All dimensions from
rear corner of unit ,
including panels
Y
O
X
35"
(889 mm)
16-1/16"
(408mm)
4" (102mm)
DPN000803
Rev. 2