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HORIZONTAL VENTING w/ 2-Pipes
(Upflow Furnace Shown)
VERTICAL VENTING w/ 2-Pipes
(Upflow Furnace Shown)
Rubber
Grommet
Coupling with 2 hose
clamps (optional)
44
*SC & *SL Series (92.1% AFUE)
First support as close
to furnace as possible
90° Elbows
FLUE PIPE
Rubber Grommet
See
Table 2
for
2" PVC pipe lengths
(field supplied)
First Support as Close
to Furnace as Possible
Support system on
vertical rise
2" PVC pipe lengths
Figure 34. Horizontal & Vertical Venting
Straps or other suitable supports
at minimum 5 ft. intervals (both pipes)
COMBUSTION AIR VENT PIPE
Flue Pipe must slope
upward 1/4" per foot
Coupling with 2 hose
clamps (optional)
Straps or other suitable supports
at minimum 5 ft. intervals (both pipes)
90° Elbows
FLUE PIPE
Rubber
Grommet
See
Table 2
for
(field supplied)
Wall
Seal / caulk
around pipes
at wall
90° Elbow
12" Min.
7"
Normal snow level
Support system on
5'
COMBUSTION AIR
Flue Pipe must slope
upward 1/4" per foot
Coupling with 2 hose
clamps (optional)
vertical rise
90° Elbow
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