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Page 27 of 60
2-Ply Aluminum Flex Vent
The minimum vent system for horizontal termination must consist of:
12” (305 mm) horizontal length (measured from center of vent pipe)
Wall thimble part# IMC1082A
Horizontal termination cap part # IMC1070A or IMC1070B
The maximum horizontal vent system consists of:
34’ (10363 mm) vertical length with 3 - 90 degree bends and a 12’ (3658 mm) horizontal length
(measured to center of 45° vent pipe)
Wall thimble part# IMC1082A
Horizontal termination cap part # IMC1070A or IMC1070B
Note: Horizontal strapping shall be supported, by means of a steel strap, every 3’.
Venting configuration straight out off 45° pipe
Minimum 12” – Maximum 24”
Horizontal/Vertical Venting Sample Chart
Vertical/Horizontal Venting Sample Chart
H Max
V Min
H+H1+H2 Max
A
2
3
5
B
8
5
12
V Min
H1 + H2 + H3 Max
A
3
5
B
5
12
H2
H1
V
H
V
H1
H
H3
H2
H1
V
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