2. Attach Mounting Brackets
Attach
3. Install Exhaust Pipe
Slide the exhaust pipe through the CVA. Provide enough exhaust piping to pass through the roof 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.
INTAKE END
Exhaust Connection | Exhaust Connection |
(Model IGX) | (Model IG) |
DISCHARGE
END
7.Install Combustion Air Inlet Guard and Exhaust Vent Terminal
Slide the combustion air terminal over the vent pipe and fasten it to the combustion air pipe. Attach the exhaust vent terminal to the discharge end of the exhaust piping.
8. Seal Opening
Seal the opening between the roof line and the air intake pipe using an appropriate method.
Combustion Air Connection | Combustion Air Connection |
(Model IGX) | (Model IG) |
4. Install Combustion Air Pipe
Attach a
Be sure to provide enough combustion air piping to pass through the roof and provide the minimum clearance of 12 inches between the combustion air intake and the exterior surface of the roof. This clearance may need to be increased to allow for snow accumulation.
Be sure to maintain the minimum clearance of
12 inches between the exhaust pipe termination and the combustion air intake.
5. Install CVA Assembly
Place the CVA assembly through the roof and verify that all minimum clearance requirements as specified in these instructions are met. Secure the CVA assembly to the ceiling with corrosion resistant sheet metal screws through the mounting brackets.
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.
Be sure to include the required tee’s with drip legs and
12 Model IG / IGX
®
