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Figure 15. Venting with three 90° elbows
VENTING WITH THREE (3) 90° ELBOWS
1' MIN. (305 mm) 2' MAX. (610 mm) 3' MAX. (914 mm)
2' MIN. (610 mm) 4' MAX. (1.22 m) 6' MAX. (1.86 m)
3' MIN. (914 mm) 6' MAX. (1.86 m) 9' MAX. (2.7 m)
4' MIN. (1.22 m) 8' MAX. (2.48 m) 15' MAX. (4.5 m)
8' MAX. (2.48 m) 17' MAX. (5.1 m)
V + H + H
1
+ H
2
= 37' MAX. (11.3m)
VENTING WITH THREE (3) 90° ELBOWS
V H H + H
1
+ H
2
1' MIN. (305 mm) 2' MAX. (610 mm) 3' MAX. (914mm)
2' MIN. (610 mm) 4' MAX. (1.22 m) 6' MAX. (1.86 m)
3' MIN. (914 mm) 6' MAX. (1.86 m) 9' MAX. (2.7 m)
4' MIN. (1.22 m) 8' MAX. (2.48 m) 12' MAX. (3.6 m)
8' MAX. (2.48 m) 17' MAX. (5.1 m)
V + V
1
+ H + H
1
= 37' MAX. (11.3m)
VENTING WITH THREE (3) 90° ELBOWS
V
1
V
H
1
H
H
V
H
1
H
2