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Venting (Part II) continued-
VENT CONNECTOR LENGTHS FOR 3'' (7.6 cm) DIAMETER VENT PIPE
Terminating
Through the Wall
Through the Wall
Through the Wall
Through the Wall
Through the Wall
Through the Roof
Through the Roof
Through the Roof
Through the Roof
Through the Roof
NOTE: When using 3" (7.6 cm) vent pipe, use a 3" (7.6 cm) to 2" (5.1 cm)
reducer and exit the building wall with 2" (5.1 cm) vent pipe using the 2"
(5.1 cm) 45° vent terminal supplied. Two 45° elbows are equivalent to one
90° elbow. Each 90° elbow is equivalent to 5 feet (1.5 m) of straight vent
pipe.
CONNECTION TO 2" (5.1 CM)
TABLE 6
# of 90° Elbows
(excluding vent
terminal)
1
2
3
4
5
0
1
2
3
4
VENT PIPE
Figure 6
Max straight
Length
ft (m)
115 (35)
110 (33.5)
105 (32.0)
100 (30.5)
95 (29.0)
120 (36.6)
115 (35)
110 (33.5)
105 (32.0)
100 (30.5)
CONNECTION TO 3" (7.6 CM)
20
Min straight
Length
ft (m)
10 (3.1)
10 (3.1)
10 (3.1)
10 (3.1)
10 (3.1)
15 (4.6)
15 (4.6)
15 (4.6)
15 (4.6)
15 (4.6)
VENT PIPE
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