
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’