MG3P Installation Manual

51
Figure 52. MG3S Horizontal & Vertical Venting
Couplings with 2
Hose Clamps (Optional)
FLUE PIPE
Coupling with 2 Hose
Clamps (Optional)
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
FLUE PIPE
COMBUSTION AIR
MG3S HORIZONTAL VENTING
(2-Pipe, Downflow Furnace Shown)
MG3S VERTICAL VENTING
(2-Pipe, Downflow Furnace Shown)
PVC Te e
PVC Tr ap
PVC Te e
PVC Tr ap
PVC Te e
PVC Tr ap
Straps or Other Suitable
Supports at minimum
5 ft. Intervals
Support System on
Vertical Rise
First Support as Close
to Furnace as Possible
90° Elbow
(both ends)
COMBUSTION AIR
Couplings with 2
Hose Clamps (Optional)
See Table 1 for 2”
PVC pipe lengths
(field supplied)
See Table 1 for 2”
PVC pipe lengths
(field supplied)
See Table 1 for 2”
PVC pipe lengths
(field supplied)