Greenheck IG / IGX (464104 IOM) (Pre-2009) - Manual (Page 18)

18
Installation
Step 1 Install Exhaust Pipe
Run an exhaust pipe from the unit’s combustion
exhaust through the roof to the outdoors. The exhaust
pipe must terminate at least 12 inches above the
outside surface of the roof. This clearance may need
to be increased to accommodate snow accumulation.
Attach the exhaust vent terminal to the end of the
exhaust pipe.
Step 3 Seal Roof Penetration
Using an appropriate method, seal the roof openings around the vent pipes.
Step 2 Install Combustion Air Pipe
Run a combustion air pipe from the unit’s combustion
air intake through the roof to the outdoors. The
combustion air pipe must terminate at least 12 inches
horizontally and vertically from the combustion
exhaust pipe and at least 24 inches from the exterior
surface of the roof. These clearances may need to be
increased to accommodate for expected snow
accumulation. Attach the combustion air terminal to
the end of the combustion air pipe.
Installation - Two Pipe Venting (Vertical)
Exhaust
Connection
(Model IG)
Exhaust
Connection
(Model IGX)
Combustion Air
Connection
(Model IG)
Combustion Air
Connection
(Model IGX)
Intake End
Discharge
End