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NOTICE: This unit can be vented using only
the following recommended pipe material.
2 inch: PVC (Schedule 40, ASTM D1785)
3 inch: PVC (Schedule 40, ASTM D1785)
or PVC (Schedule 40, Cellular Core,
ASTM F891)
2 or 3 inch diameter pipe
CPVC (Schedule 40, ASTM F441)
The fittings, other than the TERMINATION,
should be equivalent to the following:
PVC (Schedule 40 DWV, ASTM D2665)
CPVC (Schedule 40, ASTM F438)
Note: It is acceptable to interchange PVC
and CPVC pipe and fittings.
NOTE: This water heater may be installed
in attics provided ambient temperatures
DO NOT exceed 125°F (52°C) and CPVC
pipe and fittings are used for the entire vent
system.
Vent pipe materials must be chosen based
upon the ambient temperature where the water
heater is installed and the location within the
vent system. See chart below for material re-
quirements.
Vent Pipe Materials
Ambient Installation Temperatures and Vent System Material Specications
Below 100°F (38°C) 100°F (38°C) to 125°F (52°C)
Models
0 to Max. ft.
(0 to Max. m)
Equivalent Vent
System Length
0 to 10 ft.
(0 to 3 m)
Equivalent Vent
System Length
10 ft. to Max.
(0 m to Max.)
Equivalent Vent
System Length
40 and 50 Gallon
PVC or CPVC CPVC PVC or CPVC
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