18
4 x 90º ELBOWS MAXIMUM
(or equivalent)
Venting Con
fi
gurations—With Vertical Rise
Min. 6” rise
for top outlet
817VAK adapter:
required for top
or rear outlet.
Max. 24” before
elbow
Min. 12” rise
45° elbow directly
on flue collar is
allowed with min. 6”
pipe between elbows
1” min.
all around
vertical pipe
3” min.
above top of
horizontal pipe
1” min. around
bottom & sides of
horizontal pipe
V1
V2
V3
H1
H2
Venting
Co-axial
Example 1
Value V = V1 (6’) + V2 (6’) + V3 (2’)= 14’
Value H = H1 (3’) + H2 (3’) = 6’
