Lennox ML196DF045XE36B Manual page 23

NOTE - 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.
NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation.
1-1/2" Pipe
Number Of
Model
90° Elbows
Used
045 070
1 15 15
2 10 10
3
4
5
6
N/A N/A
7
8
9
10
1-1/2" Pipe
Number Of
Model
90° Elbows
Used
045 070
1 15 15
2 10 10
3
4
5
6
N/A N/A
7
8
9
10
1-1/2" Pipe
Number Of 90°
Elbows Used
045 070
1 10 10
2
3
4
5
6 N/A N/A
7
8
9
10
1-1/2" Pipe
Number Of 90°
Elbows Used
045 070
1 10 10
2
3
4
5
6
N/A N/A
7
8
9
10
Maximum Allowable Intake or Exhaust Vent Length
Standard Termination at Elevation 0 - 4500 ft
2" Pipe
Model
090 110 045 070
81 66
76 61
71 56
66 51
61 46
N/A N/A
56 41
51 36
46 31
41 26
36 21
Standard Termination Elevation 4500 - 10,000 ft
2" Pipe
Model
090 110 045 070
81 66
76 61
71 56
66 51
61 46
N/A N/A
56 41
51 36
46 31
41 26
36 21
Concentric Termination at Elevation 0 - 4500 ft
Models
090 110 045 070
73 58
68 53
63 48
58 43
53 38
N/A N/A
48 33
43 28
38 23
33 18
28 13
Concentric Termination Elevation 4501 - 10,000 ft
Model
090 110 045 070
73 58
68 53
63 48
58 43
53 38
N/A N/A
48 33
43 28
38 23
33 18
28 13
TABLE 12
2-1/2" Pipe
090 110 045 070
44 14 115 115
39 9 110 110
34 105 105
29 100 100
24 95 95
19 90 90
N/A
14 85 85
n/a 80 80
n/a 75 75
n/a 70 70
2-1/2" Pipe
090 110 045 070
44 115 115
39 110 110
34 105 105
29 100 100
24 95 95
N/A
19 90 90
14 85 85
n/a 80 80
n/a 75 75
n/a 70 70
2" Pipe 2-1/2" Pipe
Model
090 110 045 070
42 12 105 105
37 7 100 100
32 95 95
27 90 90
22 85 85
17 80 80
N/A
12 75 75
70 70
65 65
n/a
60 60
2" Pipe 2-1/2" Pipe
Model
090 110 045 070
42 105 105
37 100 100
32 95 95
27 90 90
22 85 85
N/A
17 80 80
12 75 75
70 70
65 65
n/a
60 60
Page 23
Model
090 110 045 070
93 48 138 137
88 43 133 132
83 38 128 127
78 33 123 122
73 28 118 117
68 23 113 112
63 18 108 107
58 13 103 102
53 98 97
N/A
48 93 92
Model
090 110 045 070
93 48 138 137
88 43 133 132
83 38 128 127
78 33 123 122
73 28 118 117
68 23 113 112
63 18 108 107
58 13 103 102
53 98 97
N/A
48 93 92
Model
090 110 045 070
89 44 121 121
84 39 116 116
79 34 111 111
74 29 106 106
69 24 101 101
64 19 96
59 14 91
54 9 86
49 81
N/A
44 76
Model
090 110 045 070
89 44 121 121
84 39 116 116
79 34 111 111
74 29 106 106
69 24 101 101
64 19 96
59 14 91
54 9 86
49 81
N/A
44 76
3" Pipe
Model
090 110
118 108
113 103
108 98
103 93
98 88
93 83
88 78
83 73
78 68
73 63
3" Pipe
Model
090 110
118 108
113 103
108 98
103 93
98 88
93 83
88 78
83 73
78 68
73 63
3" Pipe
Model
090 110
114 104
109 99
104 94
99 89
94 84
96 89 79
91 84 74
86 79 69
81 74 64
76 69 59
3" Pipe
Model
090 110
114 104
109 99
104 94
99 89
94 84
96 89 79
91 84 74
86 79 69
81 74 64
76 69 59