16
G6RL Downflow Furnaces
G6RC & G6RD Upflow Furnaces
5/8"
Inlet
Exhaust
Combustion
Offset with
Exhaust Pipe
for Adequate
Dimensional
Clearance
PVC or
ABS Pipe
See Vent Table 4
Straps or Other Suitable
Supports at Minimum of 5 ft. Intervals
Upward Pitch - 1/4" per Foot
Outlet Exhaust Vent
First Support Placed
as Close to Furnace
Connection as Possible
Exhaust Vent
Wall
Coupling
Seal/Caulk
around Pipe
at Building
90˚ Elbow
12" Min.
Normal Snow Level
7"
Straight Neoprene Coupling
with 2 Hose Clamps*
(Optional - Not Shown)
5/8"
Inlet
Exhaust
Combustion Air
Inlet
Offset with Exhaust
Pipe for Adequate
Dimensional
Clearance
PVC or
ABS Pipe
See Vent Table 4
Straps or Other Suitable
Supports at Minimum of 5 ft. Intervals
Upward Pitch - 1/4" per Foot
Outlet Exhaust Vent
First Support Placed
as Close to Furnace
Connection as Possible
Exhaust Vent
Wall
Coupling
Seal/Caulk
around Pipe
at Building
90˚ Elbow
12" Min.
Normal Snow Level
Straight Neoprene
Coupling with
2 Hose Clamps
Figure 14. Horizontal Venting
* These couplings are field-supplied and can be used if the installation requires breakable
connections in the piping. Note that a maximum of two couplings per pipe are allowed.