Lennox EL296DFE Series Manual page 29

Number 1-1/2" Pipe
Of 90°
Model
Elbows
045 070
Used
1 15 10
2 10
3
4
5
6 n/a
n/a
7
8
9
10
Maximum Allowable Exhaust Vent Length Using Ventilated Attic or Crawl Space For Intake Air in Feet
NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation.
Number 1-1/2" Pipe
Of 90°
Model
Elbows
045 070
Used
1 15 10
2 10
3
4
5
6 n/a
n/a
7
8
9
10
TABLE 17 Continued
Concentric Termination Elevation 4501 - 10,000 ft
2" Pipe
Model
090 110 045 070
63 48
58 43
53 38
48 33
43 28
n/a n/a
38 23
33 18
28 13
23 8
18 3
Standard Termination at Elevation 0 - 10,000 ft
2" Pipe
Model
090 110 045 070
61 46
56 41
51 36
46 31
41 26
n/a n/a
36 21
31 16
26 11
21 6
16 1
2-1/2" Pipe
Model
090 110 045 070
32 95 95
27 90 90
22 85 85
17 80 80
12 75 75
n/a
7 70 70
2 65 65
60 60
n/a 55 55
50 50
TABLE 18
2-1/2" Pipe
Model
090 110 045 070
24 90 90
19 85 85
14 80 80
9 75 75
4 70 70
n/wa
65 65
60 60
n/a 55 55
50 50
45 45
Page 29
3" Pipe
Model
090 110 045 070
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 4 71 71
34 n/a 66 66
3" Pipe
Model
090 110 045 070
68 33 108 107
63 28 103 102
58 23 98 97
53 18 93 92
48 13 88 87
43 8 81 82
38 3 78 77
33 73 72
28 n/a 68 67
23 63 62
090 110
104 94
99 99
94 94
89 89
84 84
79 79
74 74
69 69
64 64
59 59
090 110
88 88
83 83
78 78
73 73
68 68
63 63
58 58
53 53
48 48
43 43