Payne PG92ESAA Product Data page 8

MAXIMUM ALLOWABLE EXPOSED VENT LENGTHS INSULATION TABLE
Unit Size
Uninsulated
Pipe Dia.
1 ½ 2
Winter
in.
Design
20 20 20
Temp ° F
0 10 5
-20 5
-40
Unit Size
Pipe Dia.
Winter
1 ½
in.
Design
Temp 20 15
° F
0 15
-20 15
-40 10
Unit Size
Pipe Dia.
2
Winter
in.
Design
20 20
Temp ° F
0 20
-20 15
-40 10
Unit Size
Uninsulated
Pipe Dia.
2 ½ 3
Winter
in.
Design
20 10 50
Temp ° F
0 10 20
---20 10 10
---40 10 5
Maximum Allowable Exposed Vent Length in Unconditioned Space (Metric)
Unit Size
Uninsulated
Pipe Dia.
Winter
38 51
mm
Design
Temp
---7 6.1 6.1
° C
---18 3.0 1.5
---29 1.5
---40
Unit Size
Pipe Dia.
Winter
38
mm
Design
Temp ---7 4.6
° C
---18 4.6
---29 4.6
---40 3.0
Unit Size
Pipe Dia.
Winter
51
mm
Design
Temp
---7 6.1
° C
---18 6.1
---29 4.6
---40 3.0
Unit Size
Uninsulated
Pipe Dia.
Winter
64 76
mm
Design
Temp ---7 3.0 15.2
° C
---18 3.0 6.1
---29 3.0 3.0
-40 3.0 1.5
* Not all model families have these sizes
Table 1 – Maximum Allowable Exposed Vent Lengths Insulation Table - - Ft.
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 15 10
10 5
5
120,000 BTUH
3/8-in. Insulation
4 2 ½ 3 4
40 10 75 95
15 10 55 45
10 35 25
10 25 15
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 4.6 3.0
3.0 1.5
1.5
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
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
20 80 95
20 55 45
20 35 30
20 25 20
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
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
6.1 24.4 28.9
6.1 16.8 13.7
6.1 10.7 9.1
6.1 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
8
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
30 15 50
15 15 40
5 15 30
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
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 70
50 40 35
30 25 15
25 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
64 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