Greenheck IGX Installation, Operation And Maintenance Manual page 14

Venting Instructions:
Concentric Venting - Horizontal
1. The vent pipe must terminate with the vent
terminal (supplied in the venting kit) for horizontal
venting. The venting kit includes the concentric
venting adapter, vent termination cap and the air
inlet guard.
2. The combustion air pipe must terminate at least 2
inches from the wall. this will prevent water from
running down the wall and into the pipe and
allows for easy installation of the combustion air
intake guard.
Horizontal Venting
A = 12 inch minimum
B = 2 inch minimum
C = Field supplied mounting brackets
Pitch vent pipe downward
from furnace .25 inches per
foot
Separated Combustion Concentric Venting Kit - Horizontal
Furnace Size 100 - 150 mbh
Kit contents: (1) 4 inch vent terminal (1) 6 inch vent terminal
(1) 6 inch inlet guard
(1) concentric adapter
All measurements shown are diameters.
The venting parts listed above are supplied by Greenheck.
All vent piping is FIELD SUPPLIED by others.
3. Caulk between the wall and the air intake pipe.
4. Maintain 12 inches from the combustion air inlet
guard to the back of the vent terminal.
5. Now attach the combustion air intake guard by
placing the guard on the end of the pipe. Bend
the mounting tabs over and onto the pipe. Fasten
the guard to the intake pipe using non-corrosive
screws.
C
EXHAUST
COMBUSTION AIR
C
200 - 400 mbh
(1) 8 inch inlet guard
(1) concentric adapter
14
Exterior Wall
A
Exhaust Vent
Terminal
B
Combustion Air
Inlet Guard