Maximum Allowable Exposed Vent Length In Unconditioned Space - Carrier 59SC5B Installation, Start-Up, Operating And Service And Maintenance Instructions

Table 15 – Maximum Allowable Exposed Vent Length in Unconditioned Space - - Ft. / M
Unit Size
0" Insulation
Pipe Dia.
In.
1½
20
Winter 20
0
Design 5
Temp --- 20
° F
--- 40
Unit Size
Pipe Dia. Uninsulated
in.
1 ½ 2
20
20 20
0
10 5
Winter
-20
5
Design
Temp ° F
-40
Unit Size
Pipe Dia.
in.
1 ½
20
15
Winter
0
15
Design
-20
Temp 15
° F
-40
10
Unit Size
Pipe Dia.
in.
2
20
20
0
20
Winter
-20
15
Design
Temp ° F -40
10
Unit Size
Pipe Dia. Uninsulated
in.
2 ½ 3
20
10 50
0
10 20
Winter
--- 20
10 10
Design
Temp ° F --- 40
10 5
Maximum Allowable Exposed Vent Length in Unconditioned Space (Metric)
Unit Size
0" Insulation
Pipe Dia.
mm 38
--- 7
6.1
Winter
--- 18 1.5
Design
Temp --- 29
° C
--- 40
Unit Size
Pipe Dia. Uninsulated
mm
38 51
--- 7
6.1 6.1
Winter
--- 18
3.0 1.5
Design
--- 29
Temp 1.5
° C
--- 40
Unit Size
Pipe Dia.
mm
38
--- 7
4.6
Winter
--- 18
4.6
Design
--- 29
Temp
4.6
° C
--- 40
3.0
Unit Size
Pipe Dia.
mm
51
--- 7
6.1
Winter
--- 18
6.1
Design
--- 29
Temp 4.6
° C
--- 40
3.0
Unit Size
Pipe Dia. Uninsulated
mm
64 76
--- 7
3.0 15.2
Winter
--- 18
3.0 6.1
Design
--- 29
Temp 3.0 3.0
° C
--- 40
3.0 1.5
26,000* BTUH
3/8" Insulation 1/2" Insulation
2 1½ 2 1½
20 50 45 60
5 25 20 30
15 10 20
10 5 15
40,000* BTUH
3/8-in. Insulation 1/2-in. Insulation
2 ½ 1 ½ 2 2 ½ 1 ½
20 20 50 45 20
5 20 25 20 20
20 15 10 20
15 10 5 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
20 15 10 20
10 5 20
5 20
120,000 BTUH
3/8-in. Insulation
4 2 ½ 3 4 2 ½
40 10 75 95
15 10 55 45
10 35 25
10 25 15
26,000* BTUH
3/8" Insulation 1/2" Insulation
51 38 51 38
6.1 15.2 13.7 18.3
1.5 7.6 6.1 9.1
4.6 3.0 6.1
3.0 1.5 4.6
40,000* BTUH
3/8-in. Insulation 1/2-in. Insulation
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
51 64 76 102
12.2 12.2 10.7 9.1
6.1 4.6 3.0 1.5
3.0 1.5
1.5
Uninsulated
64 76 102
15.2 12.2 10.7 6.1
6.1 4.6 3.0 6.1
3.0 1.5 6.1
1.5 6.1
120,000 BTUH
3/8-in. Insulation
102 64 76 102
12.2 3.0 22.9 28.9
4.6 3.0 16.8 13.7
3.0 10.7 7.6
3.0 7.6 4.6
2
50
25
15
10
Uninsulated
2 2 ½ 1 ½ 2 2 ½
60 50 20 30 30
30 25 15 15 10
20 15 10 5
15 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
80 95
55 45
35 30
25 20
Uninsulated
1/2-in. Insulation
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
51
15.2
7.6
4.6
3.0
Uninsulated
51 64 38 51 64
18.3 15.2 6.1 9.1 9.1
9.1 7.6 4.6 4.6 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
24.4 28.9
16.8 13.7
10.7 9.1
7.6 6.1
Uninsulated
1/2-in. Insulation
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
52
60,000 BTUH
3/8-in. Insulation
3 1 ½ 2 2 ½ 3 1 ½
25 20 75 65 60 20
10 20 40 30 25 20
20 25 20 15 20
20 15 15 10 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
4 2 2 ½
80 20 80
35 20 65
20 20 45
10 20 30
140,000 BTUH
3/8-in. Insulation
4 2 ½ 3 4
50 5 65 105
15 5 65 50
5 5 45 30
5 30 20
60,000 BTUH
3/8-in. Insulation
76 38 51 64 76 38
7.6 6.1 22.9 19.8 18.3 6.1
3.0 6.1 12.2 9.1 7.6 6.1
6.1 7.6 6.1 4.6 6.1
6.1 4.6 4.6 3.0 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
102 51 64
24.4 6.1 24.4
10.7 6.1 19.8
6.1 6.1 13.7
3.0 6.1 9.1
140,000 BTUH
3/8-in. Insulation
102 64 76 102
15.2 1.5 19.8 32.0
4.6 1.5 19.8 15.2
1.5 1.5 13.7 9.1
1.5 9.1 6.1
1/2-in. Insulation
2 2 ½ 3
85 75 65
45 40 30
30 25 20
20 15 10
3 4
70 70
40 35
25 15
20 10
3 4
105 90
55 45
35 25
25 15
1/2-in. Insulation
2 ½ 3 4
5 65 125
5 65 60
5 50 40
5 35 25
1/2-in. Insulation
51 64 76
25.9 22.9 19.8
13.7 12.2 9.1
9.1 7.6 6.1
6.1 4.6 3.0
76 102
21.3 21.3
12.2 10.7
7.6 4.6
6.1 3.0
76 102
32.0 27.4
16.7 13.7
10.7 7.6
7.6 4.6
1/2-in. Insulation
64 76 102
1.5 19.8 38.1
1.5 19.8 18.3
1.5 15.2 12.2
1.5 35 7.6