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INSTALLATION INSTRUCTIONS
Maximum Allowable Exposed Vent Lengths in Unconditioned Space − Two−Stage
Table 17
(F/G)9MVE
Winter
Pipe Length
High Heat
Design
in Ft. & M
Input
Temp °F (°C)
20 (-10)
0 (-20)
40,000
-20 (-30)
-40 (-40)
20 (-10)
0 (-20)
60,000
-20 (-30)
-40 (-40)
20 (-10)
0 (-20)
80,000
-20 (-30)
-40 (-40)
20 (-10)
0 (-20)
100,000
-20 (-30)
-40 (-40)
20 (-10)
0 (-20)
120,000
-20 (-30)
-40 (-40)
56
Maximum Length of Uninsulated and Insulated Vent Pipe-Ft (M)
No Insulation
Pipe Diameter − in. (mm)
1.5
2.0
2.5
3.0
(38)
(51) (64) (76) (102)
Ft.
40.0
35.0 35.0 N/A
M
12.2
10.7 10.7 N/A
Ft.
19.0
14.0 12.0 N/A
M
5.8
4.3
3.7
N/A
Ft.
9.0
3.0
1.0
N/A
M
2.7
0.9
0.3
N/A
Ft.
3.0
0.0
0.0
N/A
M
0.9
0.0
0.0
N/A
Ft.
30.0
51.0 51.0 45.0
M
9.1
15.5 15.5 13.7
Ft.
30.0
24.0 23.0 16.0
M
9.1
7.3
7.0
4.9
Ft.
18.0
11.0
9.0
1.0
M
5.5
3.4
2.7
0.3
Ft.
10.0
3.0
0.0
0.0
M
3.0
0.9
0.0
0.0
Ft.
20.0
64.0 64.0 56.0 47.0
M
6.1
19.5 19.5 17.1 14.3
Ft.
20.0
32.0 30.0 22.0 11.0
M
6.1
9.8
9.1
6.7
Ft.
20.0
17.0 14.0
6.0
M
6.1
5.2
4.3
1.8
Ft.
15.0
7.0
5.0
0.0
M
4.6
2.1
1.5
0.0
Ft.
N/A
25.0 79.0 70.0 59.0
M
N/A
7.6
24.1 21.3 18.0
Ft.
N/A
25.0 40.0 31.0 19.0
M
N/A
7.6
12.2
9.4
Ft.
N/A
23.0 21.0 13.0
M
N/A
7.0
6.4
4.0
Ft.
N/A
13.0 10.0
1.0
M
N/A
4.0
3.0
0.3
Ft.
N/A
N/A 15.0 85.0 73.0
M
N/A
N/A
4.6
25.9 22.3
Ft.
N/A
N/A 15.0 41.0 29.0
M
N/A
N/A
4.6
12.5
Ft.
N/A
N/A 15.0 20.0
M
N/A
N/A
4.6
6.1
Ft.
N/A
N/A 15.0
7.0
M
N/A
N/A
4.6
2.1
Specifications subject to change without notice.
Copyright 2013 International Comfort Products
Lewisburg, TN 37091 USA
3/8-in. (9.5 mm)
Pipe Diameter − in. (mm)
4.0
1.5
2.0
2.5
3.0
(38)
(51)
(64)
(76)
N/A
50.0
104.0 94.0
N/A
N/A
15.2
31.7
28.7
N/A
N/A
50.0
61.0
54.0
N/A
N/A
15.2
18.6
16.5
N/A
N/A
50.0
41.0
35.0
N/A
N/A
15.2
12.5
10.7
N/A
N/A
39.0
29.0
23.0
N/A
N/A
11.9
8.8
7.0
N/A
N/A
30.0
135.0 138.0 120.0 N/A
N/A
9.1
41.1
42.1
36.6
N/A
30.0
93.0
82.0
69.0
N/A
9.1
28.3
25.0
21.0
N/A
30.0
65.0
56.0
44.0
N/A
9.1
19.8
17.1
13.4
N/A
30.0
48.0
40.0
29.0
N/A
9.1
14.6
12.2
8.8
20.0
70.0 173.0 150.0 125.0 20.0
6.1
21.3
52.7
45.7
20.0
70.0 104.0 87.0
3.4
6.1
21.3
31.7
26.5
0.0
20.0
70.0
71.0
57.0
0.0
6.1
21.3
21.6
17.4
0.0
20.0
61.0
52.0
40.0
0.0
6.1
18.6
15.8
12.2
N/A
25.0 110.0 186.0 155.0 N/A
N/A
7.6
33.5
56.7
N/A
25.0 110.0 109.0 86.0
5.8
N/A
7.6
33.5
33.2
0.0
N/A
25.0
91.0
74.0
0.0
N/A
7.6
27.7
22.6
0.0
N/A
25.0
68.0
53.0
0.0
N/A
7.6
20.7
16.2
N/A
N/A
15.0 100.0 190.0 N/A
N/A
N/A
4.6
30.5
N/A
N/A
15.0 100.0 109.0 N/A
8.8
N/A
N/A
4.6
30.5
7.0
N/A
N/A
15.0
94.0
2.1
N/A
N/A
4.6
28.7
0.0
N/A
N/A
15.0
69.0
0.0
N/A
N/A
4.6
21.0
Gas Furnace: (F/G)9MVE
1/2-in. (12.7 mm)
Pipe Diameter − in. (mm)
4.0
1.5
2.0
2.5
3.0
(102)
(38)
(51)
(64)
(76)
N/A
50.0 122.0 110.0
N/A
N/A
15.2
37.2
33.5
N/A
N/A
50.0
74.0
65.0
N/A
N/A
15.2
22.6
19.8
N/A
N/A
50.0
51.0
43.0
N/A
N/A
15.2
15.5
13.1
N/A
N/A
48.0
37.0
30.0
N/A
N/A
14.6
11.3
9.1
N/A
30.0 135.0 162.0 141.0
N/A
9.1
41.1
49.4
43.0
N/A
30.0 111.0 98.0
83.0
N/A
9.1
33.8
29.9
25.3
N/A
30.0
79.0
68.0
55.0
N/A
9.1
24.1
20.7
16.8
N/A
30.0
59.0
50.0
38.0
N/A
9.1
18.0
15.2
11.6
70.0 175.0 177.0 147.0
38.1
6.1
21.3
53.3
53.9
67.0
20.0
70.0 124.0 104.0 82.0
20.4
6.1
21.3
37.8
31.7
40.0
20.0
70.0
86.0
71.0
12.2
6.1
21.3
26.2
21.6
24.0
20.0
70.0
64.0
50.0
7.3
6.1
21.3
19.5
15.2
25.0 110.0 219.0 182.0
47.2
N/A
7.6
33.5
66.8
N/A
25.0 110.0 131.0 104.0
26.2
N/A
7.6
33.5
39.9
54.0
N/A
25.0 110.0 90.0
16.5
N/A
7.6
33.5
27.4
35.0
N/A
25.0
83.0
66.0
10.7
N/A
7.6
25.3
20.1
N/A
15.0 100.0 224.0
57.9
N/A
N/A
4.6
30.5
N/A
15.0 100.0 131.0
33.2
N/A
N/A
4.6
30.5
71.0
N/A
N/A
15.0 114.0 88.0
21.6
N/A
N/A
4.6
34.7
48.0
N/A
N/A
15.0
85.0
14.6
N/A
N/A
4.6
25.9
440 01 4400 03
4.0
(102)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
44.8
25.0
52.0
15.8
33.0
10.1
55.5
31.7
68.0
20.7
46.0
14.0
68.3
39.9
26.8
62.0
18.9
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