Lennox A97UH2E Installation Instructions Manual page 20

1-1/2" Pipe
Number
Model
of 90°
Elbows
030
70
Used
045
1 20 15
2 15 10
3 10
4
5
6
n/a
7 n/a
8
9
10
1-1/2" Pipe
Number
Model
of 90°
Elbows
030
70
Used
045
1 20 15
2 15 10
3 10
4
5
6
n/a
7 n/a
8
9
10
*Size intake and exhaust pipe length separately. Values in table are for intake or exhaust, not combined total. Both Intake and Exhaust
must be same pipe size.
Page 20 of 60
Maximum Allowable Intake or Exhaust Vent Length in Feet
Concentric Termination at Elevation 0 - 4,500 ft
2" Pipe
Model
030
90 110 70
045
68 53
63 48
58 43
53 38
48 33
n/a n/a
43 28
38 23
33 18
28 13
23 8
Concentric Termination Elevation 4,501 - 10,000 ft
2" Pipe
Model
030
90 110 70
045
68 53
63 48
58 43
53 38
48 33
n/a n/a
43 28
38 23
33 18
28 13
23 8
2-1/2" Pipe
Model
030
90 110 70
045
37 17 100 100
32 12 95 95
27 7 90 90
22 85 85
17 80 80
12 75 75
7 n/a 70 70
65 65
n/a 60 60
55 55
2-1/2" Pipe
Model
030
90 110 70
045
37 100 100
32 95 95
27 90 90
22 85 85
17 80 80
n/a
12 75 75
7 70 70
65 65
n/a 60 60
55 55
Table 5B.
Issue 2327
3" Pipe
Model
030
90 110 70
045
84 49 116 116
79 44 111 111
74 39 106 106
69 34 101 101
64 29 96 96
59 24 91 91
54 19 86 86
49 14 81 81
44 9 76 76
39 n/a 71 71
3" Pipe
Model
030
90 110 70
045
84 49 116 116
79 44 111 111
74 39 106 106
69 34 101 101
64 29 96 96
59 24 91 91
54 19 86 86
49 14 81 81
44 9 76 76
39 n/a 71 71
90 110
109 109
104 104
99 99
94 94
89 89
84 84
79 79
74 74
69 69
64 64
90 110
109 109
104 104
99 99
94 94
89 89
84 84
79 79
74 74
69 69
64 64
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