International comfort products C Series Installation Instructions Manual page 60

INSTALLATION INSTRUCTIONS
Table 16
Maximum Allowable Exposed Vent Length in Unconditioned Space (Feet)
Unit Size
Uninsulated
Pipe Dia.
in.
1 ½ 2
20 20 20
Winter
0 10 5
Design
-20 5
Temp
°F
-40
Unit Size
Pipe Dia.
in.
1 ½
20 15
Winter
0 15
Design
-20 15
Temp
°F
-40 10
Unit Size
Pipe Dia.
in.
2
20 20
Winter
0 20
Design
-20 15
Temp
°F
-40 10
Uninsulated
Unit Size
Pipe Dia.
in.
2 ½
20 10
Winter
0 10
Design
-20 10
Temp
°F
-40 10
Not all families have these models
*
Maximum Allowable Exposed Vent Length in Unconditioned Space (Metric)
Unit Size
Uninsulated
Pipe Dia.
mm
38
-7 6.1 6.1
Winter
-18 3.0 1.5
Design
-29 1.5
Temp
°C
-40
Unit Size
Pipe Dia.
mm
38 51
-7 4.6 12.2
Winter
-18 4.6 6.1
Design
-29 4.6 3.0
Temp
°C
-40 3.0 1.5
Unit Size
Pipe Dia.
mm
51
-7 6.1
Winter
-18 6.1
Design
-29 4.6
Temp
°C
-40 3.0
Unit Size
Uninsulated
Pipe Dia.
mm
64
-7 3.0
Winter
-18 3.0
Design
-29 3.0
Temp
°C
-40 3.0
Not all families have these models
*
60
Maximum Allowable Exposed Vent Length Tables
40,000* BTUH
3/8-in. Insulation 1/2-in. Insulation
2 ½ 1 ½ 2 2 ½ 1 ½ 2
20 20 50 45 20 60
5 20 25 20 20 30
20 15 10 20 20
15 10 5 15 15
Uninsulated
2 2 ½ 3 4
40 40 35 30
20 15 10 5
10 5
5
Uninsulated
2 ½ 3 4
50 40 35
20 15 10
10 5
5
120,000 BTUH
3/8-in. Insulation
3 4 2 ½ 3 4
50 40 10 75 95
20 15 10 55 45
10 10 35 25
5 10 25 15
40,000* BTUH
3/8-in. Insulation 1/2-in. Insulation
51 64 38 51 64 38
6.1 6.1 15.2 13.7 6.1
1.5 6.1 7.6 6.1 6.1
6.1 4.6 3.0 6.1
4.6 3.0 1.5 4.6
Uninsulated
64 76 102
12.2 10.7 9.1
4.6 3.0 1.5
1.5
Uninsulated
64 76 102
15.2 12.2 10.7
6.1 4.6 3.0
3.0 1.5
1.5
120,000 BTUH
3/8-in. Insulation
76 102 64 76 102
15.2 12.2 3.0 22.9 28.9
6.1 4.6 3.0 16.8 13.7
3.0 3.0 10.7 7.6
1.5 3.0 7.6 4.6
Copyright 2018 International Comfort Products
Lewisburg, TN 37091 USA
Specifications subject to change without notice.
Uninsulated
2 ½ 1 ½ 2 2 ½ 3
50 20 30 30 25
25 15 15 10 10
15 10 5
10 5
80,000 BTUH
3/8-in. Insulation
1 ½ 2 2 ½ 3
15 50 90 75
15 50 45 35
15 35 30 20
15 25 20 15
100,000 BTUH
3/8-in. Insulation
2 2 ½ 3 4
20 80 95 80
20 55 45 35
20 35 30 20
20 25 20 10
Uninsulated
1/2-in. Insulation
2 ½ 3 4 2 ½ 3
10 75 105 5 55
10 65 50 5 25
10 45 30 5 10
10 30 20 5 5
Uninsulated
51 64 38 51 64 76
18.3 15.2 6.1 9.1 9.1 7.6
9.1 7.6 4.6 4.6 3.0 3.0
6.1 4.6 3.0 1.5
4.6 3.0 1.5
80,000 BTUH
3/8-in. Insulation
38 51 64 76
4.6 15.2 27.4 22.9
4.6 15.2 13.7 10.7
4.6 10.7 9.1 6.1
4.6 7.6 6.1 4.6
100,000 BTUH
3/8-in. Insulation
51 64 76 102
6.1 24.4 28.9 24.4
6.1 16.8 13.7 10.7
6.1 10.7 9.1 6.1
6.1 7.6 6.1 3.0
1/2-in. Insulation Uninsulated
64 76 102 64 76
3.0 22.9 32.0 1.5 16.7
3.0 19.8 15.2 1.5 7.6
3.0 13.7 9.1 1.5 3.0
3.0 9.1 6.1 1.5 1.5
Gas Furnace: N9MSB
60,000 BTUH
3/8-in. Insulation 1/2-in. Insulation
1 ½ 2 2 ½ 3 1 ½ 2
20 75 65 60 20 85
20 40 30 25 20 45
20 25 20 15 20 30
20 15 15 10 20 20
1/2-in. Insulation
4 1 ½ 2 2 ½
65 15 50 70
30 15 50 50
15 15 40 30
5 15 30 25
1/2-in. Insulation
2 2 ½ 3
20 80 105
20 65 55
20 45 35
20 30 25
140,000* BTUH
3/8-in. Insulation 1/2-in. Insulation
4 2 ½ 3 4 2 ½
50 5 65 105 5
15 5 65 50 5
5 5 45 30 5
5 30 20 5
60,000 BTUH
3/8-in. Insulation 1/2-in. Insulation
38 51 64 76 38 51
6.1 22.9 19.8 18.3 6.1 25.9 22.9 19.8
6.1 12.2 9.1 7.6 6.1 13.7 12.2
6.1 7.6 6.1 4.6 6.1 9.1
6.1 4.6 4.6 3.0 6.1 6.1
1/2-in. Insulation
102 38 51 64
19.8 4.6 15.2 21.3
9.1 4.6 15.2 15.2
4.6 4.6 12.2 9.1
1.5 4.6 9.1 7.6
1/2-in. Insulation
51 64 76
6.1 24.4 32.0
6.1 19.8 16.7
6.1 13.7 10.7
6.1 9.1 7.6
140,000* BTUH
3/8-in. Insulation 1/2-in. Insulation
102 64 76 102 64
15.2 1.5 19.8 32.0 1.5
4.6 1.5 19.8 15.2 1.5
1.5 1.5 13.7 9.1 1.5
1.5 9.1 6.1 1.5
440 01 4104 07
2 ½ 3
75 65
40 30
25 20
15 10
3 4
70 70
40 35
25 15
20 10
4
90
45
25
15
3 4
65 125
65 60
50 40
35 25
64 76
9.1
7.6 6.1
4.6 3.0
76 102
21.3 21.3
12.2 10.7
7.6 4.6
6.1 3.0
102
27.4
13.7
7.6
4.6
76 102
19.8 38.1
19.8 18.3
15.2 12.2
35 7.6