Vent Piping For Non-Direct Vent Applications - Payne PG9MAA Specification

VENT PIPING FOR NON-DIRECT VENT (1 PIPE) APPLICATIONS
MAXIMUM ALLOWABLE VENT PIPE LENGTH (FT)
ALTITUDE
ABOVE SEA
LEVEL (FT)
0 to 2000
200I to 3000
300I to 4000
400I to 50001-
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
* Wide radius elbow.
VENT PIPE
DIAMETER
(IN.)*
I
1-1/2
2
1-1/2
2
1-1/2
2
2-1/2
2
2-1/2
3
2-1/2 one disk
31-
31-no disk
41- no disk
1-1/2
2
1-1/2
2
2
2-1/2
2-1/2
3
3
31-no disk
41- no disk
1-1/2
2
1-1/2
2
2
2-/I2
2-1/2
3
31-no disk
41- no disk
1-1/2
2
1-1/2
2
2
2-1/2
2-1/2
3
31-no disk
41- no disk
1
5
7O
7O
2O
7O
I0
55
7O
5
4O
7O
I0
45
7O
7O
67
7O
I7
7O
49
7O
35
7O
I4
7O
7O
64
7O
I6
68
46
7O
33
7O
65
7O
6O
7O
I5
64
44
7O
31
7O
53
7O
2
NA
7O
7O
I5
7O
NA
5O
7O
NA
3O
7O
NA
4O
7O
7O
62
7O
I2
67
44
7O
26
7O
9
7O
7O
59
7O
I1
63
41
7O
24
7O
58
7O
55
7O
I0
59
39
7O
22
7O
46
7O
NUMBER OF 90 ° ELBOWS
3 4
NA NA
65 60
70 70
I0 5
70 70
NA NA
35 30
70 70
NA NA
20 20
70 70
NA NA
35 30
70 70
70 70
57 52
70 70
7 NA
66 61
30 25
70 70
I6 I6
70 70
NA NA
63 56
70 70
54 49
70 70
6 NA
62 57
28 23
70 70
I5 I4
70 66
51 44
70 70
50 45
70 70
5 NA
58 53
26 21
70 70
I3 I2
67 62
40 33
70 70
5
NA
6O
7O
NA
7O
NA
3O
7O
NA
10
7O
NA
25
7O
7O
52
7O
NA
6I
25
7O
6
66
NA
50
7O
48
7O
NA
57
22
7O
5
6I
38
7O
44
7O
NA
52
2O
7O
NA
57
26
7O
1- Vent sizing for Canadian installations above 4500 ft (1370m) above sea level are subject to acceptance by the local authorities having jurisdiction.
NA -- Not Allowed. Pressure switch will not make.
NOTES:
I1 D_ n_t use pipe size greater than th_se speci_ed in tabIe _r inc_mp_ete c_mbusti_n, f_ame disturbance_ _r f_ame sense l_ck_ut may _ccur`
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.
6
NA
55
70
NA
70
NA
20
70
NA
NA
70
NA
20
70
70
47
70
NA
6I
15
7O
NA
6I
NA
43
7O
43
7O
NA
56
13
7O
NA
56
3I
7O
39
7O
NA
52
1I
7O
NA
52
2O
7O
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