Payne PG95 Installation, Start-Up, Operating And Service And Maintenance Instructions page 47

Single-stage 4-way multipoise condensing gas furnace
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Maximum Allowable Exposed Vent Length in Unconditioned Space (Metric)
Unit Size
0" Insulation
Pipe Dia.
38
51
mm
-7
6.1
6.1
Winter
-18
1.5
1.5
Design
Temp
-29
°C
-40
Unit Size
Uninsulated
Pipe Dia.
38
51
mm
-7
6.1
6.1
Winter
-18
3.0
1.5
Design
-29
1.5
Temp
°C
-40
Unit Size
Pipe Dia.
38
51
mm
-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.
51
mm
-7
6.1
Winter
-18
6.1
Design
-29
4.6
Temp
°C
-40
3.0
Unit Size
Uninsulated
Pipe Dia.
64
76
mm
-7
3.0
15.2
Winter
-18
3.0
6.1
Design
-29
3.0
3.0
Temp
°C
­40
3.0
1.5
26,000* BTUH
3/8" Insulation
1/2" Insulation
38
51
38
15.2
13.7
18.3
7.6
6.1
9.1
4.6
3.0
6.1
3.0
1.5
4.6
40,000* BTUH
3/8­in. Insulation
1/2­in. Insulation
64
38
51
64
38
51
6.1
6.1
15.2 13.7
6.1
18.3 15.2
1.5
6.1
7.6
6.1
6.1
9.1
6.1
4.6
3.0
6.1
6.1
4.6
3.0
1.5
4.6
4.6
Uninsulated
64
76
102
12.2
10.7
9.1
4.6
3.0
1.5
1.5
Uninsulated
64
76
102
51
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
3/8­in. Insulation
1/2­in. Insulation
102
64
76
102
64
12.2
3.0
22.9
28.9
3.0
4.6
3.0
16.8
13.7
3.0
3.0
10.7
7.6
3.0
3.0
7.6
4.6
3.0
51
15.2
7.6
4.6
3.0
Uninsulated
64
38
51
64
76
6.1
9.1
9.1
7.6
7.6
4.6
4.6
3.0
3.0
4.6
3.0
1.5
3.0
1.5
80,000 BTUH
3/8­in. 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
3/8­in. Insulation
64
76
102
24.4
28.9
24.4
16.8
13.7
10.7
10.7
9.1
6.1
7.6
6.1
3.0
Uninsulated
76
102
64
76
102
22.9
32.0
1.5
16.7
15.2
19.8
15.2
1.5
7.6
13.7
9.1
1.5
3.0
9.1
6.1
1.5
1.5
47
60,000 BTUH
3/8­in. Insulation
1/2­in. 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
1/2­in. 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
1/2­in. 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
3/8­in. Insulation
1/2­in. Insulation
64
76
102
64
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
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

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