Payne PG9MAA Specification page 11

MAXIMUM ALLOWABLE VENT PIPE LENGTH (FT) Continued
ALTITUDE
ABOVE SEA
LEVEL (FT)
5001 to 60001-
6001 to 70001-
7001 to 80001-
8001 to 90001-
9001 to
I0,0001-
* Wide radius elbow.
UNIT SIZE
024040
036040
024060
036060
048060
036080
048080
060080
048100
060100
060120
024040
036040
024060
036060
048060
036080
048080
060080
048100
060100
060120
024040
036040
024060
036060
048060
036080
048080
060080
048100
060100
060120
024040
036040
024060
036060
048060
036080
048080
060080
048100
060100
060120
VENT PIPE
DIAMETER
(IN.)*
I-I/2
2
I-I/2
2
2
2-I/2
2-I/2
3
31-no disk
41-no disk
I-I/2
2
I-I/2
2
2
2-I/2
2-I/2
3
31-no disk
41-no disk
I-I/2
2
I-I/2
2
2
2-I/2
2-I/2
3
31-no disk
41-no disk
I-I/2
2
I-I/2
2
2
2-I/2
2-I/2
3
31-no disk
41-no disk
I-I/2
2
1
57
7O
14
6O
4I
7O
29
7O
42
7O
53
7O
13
57
38
7O
27
68
3I
7O
49
66
12
53
36
66
25
63
2O
6I
46
62
1I
49
33
62
23
59
10
35
42
57
2
52
70
9
55
36
70
2I
67
35
70
48
70
8
52
33
70
19
63
24
70
44
65
7
48
3I
65
17
58
13
56
4I
60
6
44
28
60
15
54
NA
30
37
55
5
40
70
NA
48
I7
70
NA
52
I5
70
37
66
NA
44
I5
66
NA
48
NA
67
33
6O
NA
4O
I2
6O
NA
43
NA
41
29
55
NA
35
I0
55
NA
39
NA
I5
25
49
NUMBER OF 90 ° ELBOWS
3 4
47 42
70 70
NA NA
54 49
23 18
70 70
12 1I
62 57
29 22
70 70
43 38
68 67
NA NA
50 45
2I 16
68 67
10 9
58 53
18 1I
70 70
39 34
63 62
NA NA
46 4I
19 14
63 62
8 7
53 48
7 NA
5I 46
36 3I
58 56
NA NA
42 37
17 12
58 56
7 5
49 44
NA NA
25 20
32 27
53 5I
38 33
14 9
53 5I
5 NA
44 39
NA NA
6
35
70
NA
47
8
70
NA
47
9
70
32
64
NA
43
6
64
NA
43
NA
62
28
59
NA
38
NA
59
NA
38
NA
36
24
53
NA
34
NA
53
NA
34
NA
I0
2O
47
024040
036040
024060
036060 2 45 40 31 29
048060
036080 2 30 25 7 NA
048080
060080 2-I/2 57 55 49 47
048100 2-I/2 2I 13 NA NA
060100 3 54 49 34 29
060120 41- no disk 10 5 NA NA
1- Vent sizing for Canadian installations above 4500 ft (I370m) above sea level are subject to acceptance by the local authorities having jurisdiction.
NA -- Not Allowed. Pressure switch will not make.
NOTES:
1. Do not use pipe size greater than those specified in table or incomplete combustion, flame disturbance, or flame sense lockout may occur.
2. Assume two 45 ° elbows equal one 90 ° elbow. Long radius elbows are desirable and may be required in some cases.
3. Elbows and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.
4. The minimum pipe length is 5 ft for all applications.
m11m