Lennox ELITE EL196UHE Installation Instructions Manual page 20

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
No.
Model
Of 90°
Elbows
030 045 070
1 20 15 10
2 15 10
3 10
4
5
6 n/a
n/a
7 n/a
8
9
10
1-1/2" Pipe
No.
Model
Of 90°
Elbows
030 045 070
1 20 15 10
2 15 10
3 10
4
5
6 n/a
n/a
7 n/a
8
9
10
TABLE 5 Continued
Maximum Allowable Intake or Exhaust Vent Length in Feet
Concentric Termination at Elevation 0 - 4500 ft
2" Pipe
Model
030
090 110 070
045
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 4500 - 10,000 f
2" Pipe
Model
030
090 110 070
045
73 58
68 53
63 48
58 43
53 38
n/a n/a
48 33
43 28
38 23
33 18
28 13
2-1/2" Pipe
Model
030
090 110 070
045
42 22 105 105
37 17 100 100
32 12 95 95
27 90 90
22 85 85
17 80 80
12 n/a 75 75
70 70
n/a 65 65
60 60
2-1/2" Pipe
Model
030
090 110 070
045
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
n/a 65 65
60 60
Page 20
3" Pipe
Model
030
090 110 070
045
89 54 121 121
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 n/a 76 76
t
3" Pipe
Model
030
090 110 070
045
89 54 121 121
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 n/a 76 76
090 110
114 114
109 109
104 104
99 99
94 94
89 89
84 84
79 79
74 74
69 69
090 110
114 114
109 109
104 104
99 99
94 94
89 89
84 84
79 79
74 74
69 69