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