62
Exhaust Air Outlet
Combustion Air Intake
C
D
A
B
Airflow
A
B
C
D
E
F
3/4-inch Gas Connection
Combustion Air Inlet
Exhaust Outlet
Discharge End
Reference - Model IG Venting Connection Location
Reference - Model IGX Venting Connection Location
Flue Connection Size (diameter in inches)
IG
Housing
Standard Non-Concentric Concentric
Exhaust Exhaust Intake Exhaust Intake
10 4.0 4.0 4.0 4.0 6.0
20 6.0 6.0 6.0 6.0 8.0
30 6.0 6.0 6.0 6.0 8.0
Venting Location Dimensions
IG
Housing
ABCDEG
10 3.89 5.12 9.12 11.59 23.11 27.58
20 3.91 3.89 7.89 11.62 25.34 32.27
30 3.91 3.89 7.89 11.62 25.34 32.27
Dimensions are in inches.
Dimensions B and E are not needed for standard venting. A round
adapter should be used for the exhaust connection.
IGX
Housing
Furnace Size
(MBH)
ABCD
Flue Connection Size (diameter in inches)
Standard Non-Concentric Concentric
Exhaust Exhaust Intake Exhaust Intake
12
100 4.45 8.45 23.43 27.90 4.0 4.0 4.0 4.0 6.0
150 4.45 8.45 23.43 27.90 4.0 4.0 4.0 4.0 6.0
200 5.64 9.64 23.97 30.90 6.0 6.0 6.0 6.0 8.0
250 5.64 9.64 23.97 30.90 6.0 6.0 6.0 6.0 8.0
22
150 4.45 8.45 29.38 33.85 4.0 4.0 4.0 4.0 6.0
200 5.67 9.67 24.97 31.90 6.0 6.0 6.0 6.0 8.0
250 5.67 9.67 24.97 31.90 6.0 6.0 6.0 6.0 8.0
300 5.67 9.67 24.97 31.90 6.0 6.0 6.0 6.0 8.0
350 5.67 9.67 19.01 25.94 6.0 6.0 6.0 6.0 8.0
400 5.67 9.67 19.01 25.94 6.0 6.0 6.0 6.0 8.0
500 5.67 9.67 24.97 31.90 6.0 6.0 6.0 6.0 8.0
600 5.67 9.67 24.97 31.90 6.0 6.0 6.0 6.0 8.0
32
350 5.96 9.71 28.31 35.24 6.0 6.0 6.0 6.0 8.0
400 5.96 9.71 28.31 35.24 6.0 6.0 6.0 6.0 8.0
500 5.96 9.71 28.31 35.24 6.0 6.0 6.0 6.0 8.0
600 5.96 9.71 28.31 35.24 6.0 6.0 6.0 6.0 8.0
700 5.96 9.71 28.31 35.24 6.0 6.0 6.0 6.0 8.0
800 5.96 9.71 28.31 35.24 6.0 6.0 6.0 6.0 8.0
1050 5.96 9.71 28.31 35.24 6.0 6.0 6.0 6.0 8.0
1200 5.96 9.71 28.31 35.24 6.0 6.0 6.0 6.0 8.0
Dimensions are in inches. Dimensions A and C are not needed for standard venting.
®
Model IG / IGX Make-Up Air
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