Greenheck IG / IGX (464104 IOM) (Pre-2009) - Manual (Page 12)

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Step 4 Install Combustion Air Pipe
Attach a field supplied combustion air pipe to the
concentric side of the CVA.
Be sure to provide enough combustion air piping to
pass through the wall and provide the minimum
clearance of 2 inches between the combustion air
intake and the exterior surface of the outside wall.
Be sure to maintain the minimum clearance of 12
inches between the exhaust pipe termination and the
combustion air intake.
Step 5 Install CVA Assembly
Place the entire CVA assembly through the wall and verify that all minimum clearance requirements as specified
in these instructions are met. Secure the CVA assembly to the wall with corrosion resistant sheet metal screws
through the mounting brackets.
Step 6 Attach CVA Assembly to Unit
Attach the exhaust pipe to the unit’s combustion exhaust. Using an additional combustion air pipe, connect the
unit’s combustion air supply intake to the combustion air connection on the CVA.
Step 8 Seal Opening
Seal the opening between the wall and the air intake pipe using an appropriate method.
Step 7 Install Combustion Air Inlet Guard and Exhaust Vent Terminal
Slide the combustion air inlet guard over the exhaust pipe and fasten it to the combustion air pipe. Attach the
exhaust vent terminal to the discharge end of the exhaust piping on the outside of the building.
Step 3 Install Exhaust Pipe
Slide the exhaust pipe through the CVA.
Be sure to provide enough exhaust piping to pass
through the wall and provide the minimum clearance
of 12 inches between the exhaust pipe termination
and the combustion air intake.
With all required clearances satisfied, attach the
exhaust pipe to the CVA.
Installation - Concentric Venting (Horizontal)
Exhaust
Connection
(Model IG)
Exhaust
Connection
(Model IGX)
Combustion Air
Connection
(Model IG)
Combustion Air
Connection
(Model IGX)
Installation
Intake End
Discharge
End