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17
Vertical Vents
Acceptable Configurations
V Value
= Total length of all vertical sections in
feet.
H Value
= Total length of all horizontal sections
in feet
Example 1
V Value
= V1 (4') + V2 (3') = 7'
H Value
= H1 (2') + H2 (2') = 4'
NOTES:
a) for H & V values of 45
°
venting see Chart IV
b) elbows are not counted in H or V values
c) vent chart starts from the top of the unit
Содержание BRITANNIA 31
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