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Heat & Glo • GEM36 • 370-900 Rev. O • 2/05
VENTING WITH THREE (3) 90° ELBOWS
V (FT.) H
(FT.)
2' MIN. (.609m) 3' MAX. (.912m)
2.5' MIN. (.762m) 6' MAX. (1.82m)
3.5' MIN. (1.06m) 9' MAX. (2.73m)
4.5' MIN. (1.37m) 12' MAX. (3.64m)
NOTE: H + H
1
= 24' MAX. (7.28m)
V + V
1
+ H + H
1
= 64' MAX. (19.5m)
V (FT.) H + H
1
(FT.)
2' MIN. (.609m) 3' MAX. (.912m)
2.5' MIN. (.762m) 6' MAX. (1.82m)
3.5' MIN. (1.06m) 9' MAX. (2.73m)
4.5' MIN. (1.37m) 12' MAX. (3.64m)
H +H
1
= 20' MAX. (6.2m)
NOTE: V+V
1
+H +H
1
= 64' MAX. (19.5m)
Figure 13. Venting with three 90° elbows
V
H
H
1
V
1
V
H
H
1
V
1