Installation / Operation Instruction Manual

19
Part II - Venting Specifications for:
40 Gallon (151.4 L)
50 Gallon (189.2 L)
60 Gallon (227.1 L)
This water heater is a power vented appliance and is designed to vent its
products of combustion through 2’’ (5.1 cm) or 3’’ (7.6 cm) diameter vent
pipe to the outdoors. The water heater may be either vented horizontally
through the wall or vertically through the roof. Use a 3’’ (7.6 cm) to 2’’
(5.1 cm) reducer to connect to the vent outlet when using 3’’ (7.6 cm)
vent pipe. Apply proper cement at joint locations. Table 5 lists the
maximum vent lengths for this water heater using 2’’ (5.1 cm) vent 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
2’’ (5.1 cm) vent pipe in Table 5 then use 3’’ (7.6 cm) vent pipe for the
vent connector.
Table 6 lists the venting distances allowed with 3’’ (7.6 cm) diameter vent
pipe. When venting with 3’’ (7.6 cm) vent pipe, use a 3’’ (7.6 cm) to 2’’
(5.1 cm) reducer to exit through the building wall with 2’’ (5.1 cm) vent
pipe. Use the 2’’ (5.1 cm) vent terminal supplied with the w ater heater to
terminate on the outside of the building. If the length of the 2’’ (5.1 cm)
needed to go through the wall is greater than 14’’ (35.6 cm), use 3’’ (7.6
cm) vent pipe to go through the wall and reduce to 2’’ (5.1 cm) vent pipe
immediately after exiting the outside w all. Refer to the venting illustrations
on the following pages. Make sure the vent pipe terminal is at least 1’’ (2.5
cm) away from the edge of the w all.
TABLE 5
VENT CONNECTOR LENGTHS FOR 2’’ (5.1cm) DIAMETER VENT PIPE
Terminating
# of 90° Elbows
(excluding vent
terminal)
Max straight
Length
ft (m)
Min straight
Length
ft (m)
Through the Wall
1
45 (13.7)
2 (.6)
Through the Wall
2
40 (12.2)
2 (.6)
Through the Wall
3
35 (10.7)
2 (.6)
Through the Wall
4
30 (9.1)
2 (.6)
Through the Roof
0
50 (15.2)
7 (2.1)
Through the Roof
1
45 (13.7)
7 (2.1)
Through the Roof
2
40 (12.2)
7 (2.1)
Through the Roof
3
35 (10.7)
7 (2.1)
Through the Roof
4
30 (9.2)
7 (2.1)