Installation & Operating Manual
11
Venting continued-
PART I - Venting Specifications for:
48 Gallon (181.6L)
65 Gallon (246.0L)
75 Gallon (283.9L)
NOTE: Properly sized PVC, CPVC, or ABS* pipe must be used.
This water heater is a power vented appliance and is designed to intake and
exhaust the products of combustion through 3” (7.6 cm) or 4” (10.2 cm)
diameter Schedule 40 (solid or cellular core) vent pipe to the outdoors. This
water heater may be either vented horizontally through the wall or vertically
through the roof. Use a 3” (7.6 cm) to 4” (10.2 cm) reducer to connect to the
intake and outlet when using 4” (10.2 cm) vent pipe. Apply the proper cement
at the joint locations. Table 1 lists the maximum vent lengths for this water
heater using 3” (7.6 cm) intake and exhaust pipe. If possible, locate the water
heater so that the venting length and number of elbows are kept to the
minimum distance necessary to reach the outside. If the installation requires
venting lengths that exceed the lengths listed for 3” (7.6 cm) vent pipe in Table
1, then use 4” (10.2 cm) vent pipe for the vent connector.
Table 2 lists the venting distances allowed with 4” (10.2 cm) diameter vent pipe.
When venting with 4” (10.2 cm) vent pipe, use a 4” (10.2 cm) to 3” (7.6 cm)
reducer to exit through the building wall with 3” (7.6 cm) vent pipe. Use the 3”
(7.6 cm) vent terminal supplied with the water heater to terminate on the
outside of the building. If the length of 3” (7.6 cm) vent pipe needed to go
through the wall is greater than 14” (35.5 cm), use 4” (10.2 cm) to go through
the wall and reduce to 3” (7.6 cm) vent pipe immediately after exiting the
outside wall. Refer to the venting illustrations on the following pages. Make
sure the vent pipe terminal elbow fitting is at least 1” (2.5 cm) away from the
edge of the wall.
* Only vent pipe certified to ULC S636 may be used in Canada.