Combustion Air - Payne PG9MAA Specification

COMBUSTION-AIR AND VENT PIPING FOR DIRECT VENT (2 PIPE) APPLICATIONS
ALTITUDE
ABOVE SEA
LEVEL (FT)
0 to 2000
200I to 3000
300I to 4000
MAXIMUM ALLOWABLE PIPE LENGTH (FT)
UNIT SIZE
024040
036040
024060
036060
048060
036080
048080
060080
048100
060100
060120
060140
024040
036040
024060
036060
048060
036080
048080
060080
048100
060100
060120
060140
024040
036040
024060
036060
048060
036080
048080
060080
048100
060100
060120
060140
TERMINATION
TYPE
2 Pipe or 2-in. Concentric
2 Pipe or 2-in. Concentric
2 Pipe or 2-in. Concentric
2 Pipe or 3-in. Concentric
2 Pipe or 3-in. Concentric
2 Pipe or 3-in. Concentric
2 Pipe or 2-in. Concentric
2 Pipe or 2-in. Concentric
2 Pipe or 2-in. Concentric
2 Pipe or 3-in. Concentric
2 Pipe or 3-in. Concentric
2 Pipe or 3-in. Concentric
2 Pipe or 2-in. Concentric
2 Pipe or 2-in. Concentric
2 Pipe or 2-in. Concentric
2 Pipe or 3-in. Concentric
2 Pipe or 3-in. Concentric
2 Pipe or 3-in. Concentric
PIPE
DIAMETER
(IN.)*
1
I-1/2
2
I-1/2
2
I-1/2
2
2-1/2
2
2-1/2
3
2-1/2 one disk
31-
31-no disk
2-1/2 one disk
31-one disk
31-no disk
41-no disk
I-1/2
2
I-1/2
2
2
2-I/2
2-1/2
3
3
31-no disk
41-no disk
31-one disk
31-no disk
41-no disk
I-1/2
2
I-1/2
2
2
2-/12
2-1/2
3
31-no disk
41-no disk
31-one disk
31-no disk
41-no disk
1
5
7O
7O
2O
7O
I0
55
7O
5
4O
7O
I0
45
7O
5
4O
6O
7O
67
7O
I7
7O
49
7O
35
7O
I4
7O
7O
2O
39
7O
64
7O
I6
68
46
7O
33
7O
65
7O
I1
3O
7O
2
NA
7O
7O
I5
7O
NA
5O
7O
NA
3O
7O
NA
4O
7O
NA
35
56
7O
62
7O
I2
67
44
7O
26
7O
9
7O
7O
I5
35
7O
59
7O
I1
63
41
7O
24
7O
58
7O
6
26
7O
NUMBER OF 90 °
3
NA
65
70
10
70
NA
35
70
NA
20
70
NA
35
70
NA
30
52
70
57
70
7
66
30
70
16
70
NA
63
70
10
3I
70
54
70
6
62
28
70
15
70
5I
70
NA
22
70
ELBOWS
4
NA
60
70
5
70
NA
30
70
NA
20
70
NA
30
70
NA
25
48
70
52
70
NA
6I
25
70
16
70
NA
56
70
5
27
70
49
70
NA
57
23
70
14
66
44
70
NA
18
70
5
NA
6O
7O
NA
7O
NA
3O
7O
NA
10
7O
NA
25
7O
NA
2O
44
7O
52
7O
NA
6I
25
7O
6
66
NA
50
7O
NA
23
7O
48
7O
NA
57
22
7O
5
6I
38
7O
NA
14
7O
6
NA
55
7O
NA
7O
NA
2O
7O
NA
NA
7O
NA
2O
7O
NA
I5
4O
7O
47
7O
NA
61
I5
7O
NA
61
NA
43
7O
NA
I9
7O
43
7O
NA
56
I3
7O
NA
56
31
7O
NA
I0
7O
* Disk usage--Unless otherwise s _ecified, use perforated disk assembly (factory-supplied in loose parts bag). If one disk is stated, separate 2 halves of per-
forated disk assembly and use shouldered disk half. When using shouldered disk half, install screen side toward inlet box.
1- Wide radius elbow.
_: Vent sizing for Canadian installations above 4500 ft (1370m) above sea level are subject to acceptance by the local authorities having jurisdiction.
N/A -- Not Allowed. Pressure switch will not make.
NOTES:
I. Do not use pipe size greater than these specified in table or incomplete combustion, flame disturbance, or flame sense lockout may ocCUrs
2. Size both the combustion-air and vent pipe independently, then use the larger diameter for both pipes.
3. Assume two 45 ° elbows equal one 90 ° elbow. Long radius elbows are desirable and may be required in some cases.
4. Elbows and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.
5. The minimum pipe length is 5 ft for all applications.
6. Use 3-in. diameter vent termination kit for installations requiring 4-in. diameter pipe.
m6m