33
Figure 20. Horizontal & Vertical Venting
VERTICAL VENTING
HORIZONTAL VENTING
FLUE PIPE
Straps or Other Suitable
Supports at minimum of 5 ft. Intervals
Upward Pitch - 1/4” per foot
(Flue Pipe)
First support placed
as close to furnace
connection as possible
Wall
Normal
Snow Level
COMBUSTION AIR
Seal/Caulk
Around Pipes
at Building
90°
Elbow
7”
12” Min.
90°
Elbow
90° Elbow
Support System on
Vertical Rise
FLUE PIPE
COMBUSTION AIR
See Table 2 for
PVC Pipe Lengths
(Field Supplied)
See Table 2 for
PVC Pipe Lengths
(Field Supplied)
Depth
Clearance
=
depth of soffit
Outlet
Outlet
NOTE:
Only outlet vents are shown.
For placement with combustion air
inlet see Figure 1.
CLEARANCES FROM SOFFIT
Must be
outside
of line.