23
Use 845TG vent
guard with a
vent terminal
located at less
than 7’ (2.13 m)
above grade
V1
V2
H1
H2
1” min.
all around
vertical pipe
3” min.
above top of
horizontal pipe
1” min. around
bottom & sides of
horizontal pipe
817VAK adapter required
for top or rear outlet
530 heater
Max. 24” before
elbow
4 x 90º ELBOWS MAXIMUM
(or equivalent)
Co-Axial Venting Con
fi
gurations with Vertical Rise
Example 1
V Value = V1 (6’) + V2 (4’) = 10’
H Value = H1 (2’) + H2 (1’) = 3’
Co-Axial Venting
QUALIFIED
INSTALLER
