Install Instructions

13
Venting (Part I) continued-
sure the vent pipe terminal elbow fitting is at least 1” (2.5 cm) away from the
edge of the wall.
TABLE 1 - VENT CONNECTOR LENGTHS
FOR 3” (7.6 cm) DIAMETER VENT PIPE
Terminating # of Elbows Maximum straight
Length ft (m)
Minimum
straight
Length
ft (m)
48, 65 gal.
Through the Wall
1 55 (16.8)
2 (.6)
Through the Wall
2 50 (15.2)
2 (.6)
Through the Wall
3 45 (13.7)
2 (.6)
Through the Wall
4 40 (12.2)
2 (.6)
Through the Roof
0 60 (18.3)
7 (2.1)
Through the Roof
1 55 (16.8)
7 (2.1)
Through the Roof
2 50 (15.2)
7 (2.1)
Through the Roof
3 45 (13.7)
7 (2.1)
TABLE 2 -VENT CONNECTOR LENGTHS
FOR 4” (10.2 cm) DIAMETER VENT PIPE
Terminating
# of 90
Elbows (excl.
vent term.)
Maximum straight
Length ft (m)
Min
straight
Length
ft (m)
48, 65 gal.
Through the Wall
1 175 (53.3)
10 (3.1)
Through the Wall
2 170 (51.8)
10 (3.1)
Through the Wall
3 165 (50.3)
10 (3.1)
Through the Wall
4 160 (48.8)
10 (3.1)
Through the Wall
5 155 (47.2)
10 (3.1)
Through the Roof
0 180 (54.9)
15 (4.6)
Through the Roof
1 175 (53.3)
15 (4.6)
Through the Roof
2 170 (51.8)
15 (4.6)
Through the Roof
3 165 (50.3)
15 (4.6)
Through the Roof
4 160 (48.8)
15 (4.6)
NOTE: When using 4” (10.2 cm) vent pipe, use a 4” (10.1 cm) to 3” (7.6
cm) reducer and exit the building wall with 3” (7.6 cm) vent pipe using the