Installation Manual

12
WHL-012 REV. 12.17.14
Figure 1 –Specifications and Dimensions
DESCRIPTION
DIAMETER (ALL NPTM)
A
Automatic Air Vent
-
B
Intake Pipe Connection
3”
C
Exhaust Vent Connection
3”
D
CH Supply Adapter
1” NPT
E
CH Return Adapter
1” NPT
F
DHW Outlet Adapter
¾” NPT
G
DHW Inlet Adapter
¾” NPT
H
Gas Connection Adapter
½” NPT (1/2” X ¾” Bell Coupling Provided to Upsize Gas Line)
I
Condensate Adapter
-
Table 4 – Adapter Specifications