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15Quadra-Fire • Expression 36 (QV36A-FB) • 2062-900 Rev. S • 11/11
Figure 5.5
1. Top Vent - Horizontal Termination - (continued)
Three Elbows
H
T
V
T
H
2
H
1
V
2
V
1
V
T
Min. H
T
Max.
1 ft. 6 in. 3 ft.
2 ft. 6 in. 6 ft.
3 ft. 6 in. 9 ft.
4 ft. 10 ft.
4 ft. 6 in. 12 ft.
5 ft. 6 in. 15 ft.
6 ft. 6 in. 18 ft.
7 ft. 6 in. 21 ft.
H
T
= 21 ft. Max
V
T
= 40 ft. Max
V
T
+ H
T
= 30 ft. Max*
Note: A section of vertical pipe (12 inches minimum)
MUST be installed prior to attaching a 90° elbow.
* If the horizontal component is less than
5 feet then the total vent run can be
extended to 40 feet.