Instructions / Assembly

Figure 3: Typical Installation for 2 in.
Maintain 12” (18” for Canada) minimum clearance above highest
anticipated snow level or grade (whichever is greater).
Reducing Coupling, Field Supplied
12” min.
to Overhang
Install pipe in this direction to
ensure correct cut lengths
Vent
Air Intake
3” Piping Between 12” and 30” of 2” pipe
1.5” to 2” Reducing Blushing
12” of 1.5” Pipe
18” of 2” Pipe
30” of 2” Pipe
90,000 BTUH -
120,000 BTUH
45,000 BTUH -
75,000 BTUH
Vent
Air Intake
12”-30”/2” pipe
18”/2” pipe
12”/1.5” pipe
Figure 4: Typical Installation for 3 in.
Maintain 12” (18” for Canada) minimum clearance above highest
anticipated snow level or grade (whichever is greater).
12” min.
to Overhang
Install pipe in this direction to
ensure correct cut lengths
8
Note: Vent should protrude a maximum of 2-1/4” beyond outer wall.
Intake should protrude a maximum of 1” beyond outer wall.
Refer to furnace or condensing tankless water heater installation instructions for details
on pipe length and size requirements, as well as maximum pipe run lengths.
Refer to furnace or condensing tankless water heater installation instructions for details
on pipe length and size requirements, as well as maximum pipe run lengths.
Reducing Coupling/Coupling, Field Supplied if Needed
Vent
Air Intake
3” Piping
2”, 2-1/2”
or 3” Piping
Note: Vent should protrude a maximum of 2-1/4” beyond outer wall.
Intake should protrude a maximum of 1” beyond outer wall.