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Heat & Glo • PIER-HV-IPI, ST-HV-IPI, L&R-COR-HV-IPI • 2005-900 Rev. K • 11/0626
Figure 15. Venting with Two 90° Elbows
H
1
H
V
V
V
1
H
NATURAL GAS
VENTING WITH TWO 90° ELBOWS
V (FT.) H + H
1
(FT.)
90
0
Elbow on top 2.5’ MAX. (64mm)
1' MIN. (305mm) 3' MAX. (914mm)
2' MIN. (610mm) 6' MAX. (1.83m)
3' MIN. (914mm) 9' MAX. (2.7m)
4' MIN. (1.22m) 12' MAX. (3.6m)
5’ MIN. (1.5m) 15’ MAX. (4.5m)
6’ MIN. (1.83m) 18’ MAX. (5.5m)
V + H + H
1
= 50’ MAX. (15.2m)
PROPANE
VENTING WITH TWO 90° ELBOWS
V (FT.) H + H
1
(FT.)
90
0
Elbow on top 2’ MAX. (610mm)
1' MIN. (305mm) 2' MAX. (610mm)
2' MIN. (610mm) 4' MAX. (1.22m)
3' MIN. (914mm) 6’ MAX. (1.83m)
4' MIN. (1.22m) 8' MAX. (2.4m)
5’ MIN. (1.5m) 10' MAX. (3.0m)
6’ MIN. (1.83m) 12' MAX. (3.6m)
V + H + H
1
= 50’ MAX. (15.2m)
NATURAL GAS
VENTING WITH TWO 90° ELBOWS
V + V
1
(FT.) H (FT.)
90
0
Elbow on top 2.5’ MAX. (64mm)
1' MIN. (305mm) 3' MAX. (914mm)
2' MIN. (610mm) 6' MAX. (1.83m)
3' MIN. (914mm) 9' MAX. (2.7m)
4' MIN. (1.22m) 12' MAX. (3.6m)
5’ MIN. (1.5m) 15’ MAX. (4.5m)
6’ MIN. (1.83m) 18’ MAX. (5.5m)
V + V
1
+ H = 50’ MAX. (15.2m)
PROPANE
VENTING WITH TWO 90° ELBOWS
V + V
1
(FT.) H (FT.)
90
0
Elbow on top 2’ MAX. (610mm)
1' MIN. (305mm) 2' MAX. (610mm)
2' MIN. (610mm) 4' MAX. (1.22m)
3' MIN. (914mm) 6’ MAX. (1.83m)
4' MIN. (1.22m) 8' MAX. (2.4m)
5’ MIN. (1.5m) 10' MAX. (3.0m)
6’ MIN. (1.83m) 12' MAX. (3.6m)
V + V
1
+ H = 50’ MAX. (15.2m)
H + H
1
= 18’ MAX. (5.5m)
H + H
1
= 12’ MAX. (3.6m)