440 01 4201 03
53
Specifications subject to change without notice.
Table 17
Maximum Allowable Exposed Vent Lengths in Unconditioned Space
Maximum Length of Uninsulated and Insulated Vent Pipe-Ft (M)
(F/G)9MAC
Max. Heat
Input
Winter
Design
Temp
°
F (
°
C)
Pipe Length
in Ft. & M
No Insulation
3/8-in. (9.5 mm)
1/2-in. (12.7 mm)
Pipe Diameter-inches (mm)
Pipe Diameter-inches (mm)
Pipe Diameter-inches (mm)
1.5
2.0
2.5
3.0
4.0
1.5
2.0
2.5
3.0
4.0
1.5
2.0
2.5
3.0
4.0
(38)
(51) (64) (76) (102)
(38)
(51)
(64)
(76) (102) (38)
(51)
(64)
(76) (102)
60,000
20 (-10)
Ft.
34.0 29.0 28.0 23.0 N/A
55.0
88.0 79.0 69.0
N/A
55.0 104.0 93.0 81.0
N/A
M
10.4
8.8
8.5
7.0
N/A
16.8
26.8 24.1 21.0
N/A
16.8 31.7 28.3 24.7
N/A
0 (-20)
Ft.
14.0
9.0
7.0
0.0
N/A
55.0
49.0 43.0 34.0
N/A
55.0 60.0 52.0 42.0
N/A
M
4.3
2.7
2.1
0.0
N/A
16.8
14.9 13.1 10.4
N/A
16.8 18.3 15.8 12.8
N/A
-20 (-30)
Ft.
5.0
0.0
0.0
0.0
N/A
41.0
32.0 26.0 18.0
N/A
50.0 40.0 33.0 24.0
N/A
M
1.5
0.0
0.0
0.0
N/A
12.5
9.8
7.9
5.5
N/A
15.2 12.2 10.1
7.3
N/A
-40 (-40)
Ft.
0.0
0.0
0.0
0.0
N/A
30.0
21.0 16.0
8.0
N/A
37.0 28.0 22.0 13.0
N/A
M
0.0
0.0
0.0
0.0
N/A
9.1
6.4
4.9
2.4
N/A
11.3
8.5
6.7
4.0
N/A
60,600
20 (-10)
Ft.
34.0 29.0 28.0 23.0 N/A
55.0
88.0 79.0 69.0
N/A
55.0 104.0 93.0 81.0
N/A
M
10.4
8.8
8.5
7.0
N/A
16.8
26.8 24.1 21.0
N/A
16.8 31.7 28.3 24.7
N/A
0 (-20)
Ft.
14.0
9.0
7.0
0.0
N/A
55.0
49.0 43.0 34.0
N/A
55.0 60.0 52.0 42.0
N/A
M
4.3
2.7
2.1
0.0
N/A
16.8
14.9 13.1 10.4
N/A
16.8 18.3 15.8 12.8
N/A
-20 (-30)
Ft.
5.0
0.0
0.0
0.0
N/A
41.0
32.0 26.0 18.0
N/A
50.0 40.0 33.0 24.0
N/A
M
1.5
0.0
0.0
0.0
N/A
12.5
9.8
7.9
5.5
N/A
15.2 12.2 10.1
7.3
N/A
-40 (-40)
Ft.
0.0
0.0
0.0
0.0
N/A
30.0
21.0 16.0
8.0
N/A
37.0 28.0 22.0 13.0
N/A
M
0.0
0.0
0.0
0.0
N/A
9.1
6.4
4.9
2.4
N/A
11.3
8.5
6.7
4.0
N/A
80,000
20 (-10)
Ft.
35.0 39.0 39.0 33.0 25.0
35.0 118.0 107.0 92.0 76.0 35.0 130.0 125.0 109.0 90.0
M
10.7 11.9 11.9 10.1
7.6
10.7
36.0 32.6 28.0 23.2 10.7 39.6 38.1 33.2
27.4
0 (-20)
Ft.
22.0 16.0 14.0 7.0
0.0
35.0
69.0 60.0 49.0 35.0 35.0 83.0 72.0 60.0
45.0
M
6.7
4.9
4.3
2.1
0.0
10.7
21.0 18.3 14.9 10.7 10.7 25.3 21.9 18.3
13.7
-20 (-30)
Ft.
11.0
5.0
2.0
0.0
0.0
35.0
46.0 39.0 29.0 16.0 35.0 57.0 48.0 37.0
23.0
M
3.4
1.5
0.6
0.0
0.0
10.7
14.0 11.9
8.8
4.9
10.7 17.4 14.6
11.3
7.0
-40 (-40)
Ft.
4.0
0.0
0.0
0.0
0.0
35.0
33.0 26.0 17.0
4.0
35.0 41.0 34.0 24.0
11.0
M
1.2
0.0
0.0
0.0
0.0
10.7
10.1
7.9
5.2
1.2
10.7 12.5 10.4
7.3
3.4
100,000
20 (-10)
Ft.
N/A
47.0 47.0 41.0 32.0
N/A
50.0 110.0 112.0 93.0 N/A
50.0 110.0 132.0 110.0
M
N/A
14.3 14.3 12.5
9.8
N/A
15.2 33.5 34.1 28.3 N/A
15.2 33.5 40.2
33.5
0 (-20)
Ft.
N/A
21.0 19.0 12.0
1.0
N/A
50.0 74.0 61.0 45.0 N/A
50.0 89.0 74.0
57.0
M
N/A
6.4
5.8
3.7
0.3
N/A
15.2 22.6 18.6 13.7 N/A
15.2 27.1 22.6
17.4
-20 (-30)
Ft.
N/A
8.0
6.0
0.0
0.0
N/A
50.0 49.0 38.0 23.0 N/A
50.0 60.0 48.0
32.0
M
N/A
2.4
1.8
0.0
0.0
N/A
15.2 14.9
11.6
7.0
N/A
15.2 18.3 14.6
9.8
-40 (-40)
Ft.
N/A
1.0
0.0
0.0
0.0
N/A
42.0 34.0 24.0 10.0 N/A
50.0 43.0 32.0
18.0
M
N/A
0.3
0.0
0.0
0.0
N/A
12.8 10.4
7.3
3.0
N/A
15.2 13.1
9.8
5.5
120,000
20 (-10)
Ft.
N/A
N/A 15.0 49.0 40.0
N/A
N/A
15.0 100.0 111.0 N/A
N/A
15.0 100.0 131.0
M
N/A
N/A
4.6 14.9 12.2
N/A
N/A
4.6
30.5 33.8 N/A
N/A
4.6
30.5
39.9
0 (-20)
Ft.
N/A
N/A 15.0 17.0
6.0
N/A
N/A
15.0 75.0 57.0 N/A
N/A
15.0 90.0
70.0
M
N/A
N/A
4.6
5.2
1.8
N/A
N/A
4.6
22.9 17.4 N/A
N/A
4.6
27.4
21.3
-20 (-30)
Ft.
N/A
N/A 10.0 2.0
0.0
N/A
N/A
15.0 48.0 32.0 N/A
N/A
15.0 59.0
42.0
M
N/A
N/A
3.0
0.6
0.0
N/A
N/A
4.6
14.6
9.8
N/A
N/A
4.6
18.0
12.8
-40 (-40)
Ft.
N/A
N/A
1.0
0.0
0.0
N/A
N/A
15.0 32.0 17.0 N/A
N/A
15.0 41.0
25.0
M
N/A
N/A
0.3
0.0
0.0
N/A
N/A
4.6
9.8
5.2
N/A
N/A
4.6
12.5
7.6
International Comfort Product, LLC
PO Box 128
Lewisburg, TN 37091 USA