Lennox ML193UHE Series User Manual

Page 24
TABLE 12
Maximum Allowable Intake or Exhaust Vent Length in Feet
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.
Standard Termination at Elevation 0 - 10,000
Number Of
90° Elbows
Used
1-1/2” Pipe 2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model Model
030/
045
070 090 110
030/
045
070 090 110
030/
045
070 090 110
030/
045
070 090 110
1 25 20
n/a n/a
81 66 44 24 115 100 68 43 137 137 118 118
2 20 15 76 61 39 19 110 95 63 38 132 132 113 113
3 15 10 71 56 34 14 105 90 58 33 127 127 108 108
4 10
n/a
66 51 29
n/a
100 85 53 28 122 122 103 103
5
n/a
61 46 24 95 80 48 23 117 117 98 98
6 56 41 19 90 75 43 18 112 112 93 93
7 51 36 14 85 70 38 13 107 107 88 88
8 46 31
n/a
80 65 33
n/a
102 102 83 83
9 41 26 75 60 28 97 97 78 78
10 36 21 70 55 23 92 92 73 73
Concentric Termination Elevation 0 - 10,000
Number Of
90° Elbows
Usedl
1-1/2” Pipe 2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model Model
030/
045
070 090 110
030/
045
070 090 110
030/
045
070 090 110
030/
045
070 090 110
1 20 15
n/a n/a
73 58 42 22 105 90 64 39 121 121 114 114
2 15 10 68 53 37 17 100 85 59 34 116 116 109 109
3 10
n/a
63 48 32 12 95 80 54 29 111 111 104 104
4
n/a
58 43 27
n/a
90 75 49 24 106 106 99 99
5 53 38 22 85 70 44 19 101 101 94 94
6 48 33 17 80 65 39 14 96 96 89 89
7 43 28 12 75 60 34
n/a
91 91 84 84
8 38 23
n/a
70 55 29 86 86 79 79
9 33 18 65 50 24 81 81 74 74
10 28 13 60 45 19 76 76 69 69
TABLE 13
Maximum Allowable Exhaust Vent Lengths With Furnace Installed in a Closet or Basement 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.
Standard Termination at Elevation 0 - 10,000
Number Of
90° Elbows
Used
1-1/2”Pipe 2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model Model
030/
045
070 090 110 045 070 090 110 045 070 090 110 135 045 070 090 110
1 20 15
n/a n/a
71 56 34 14 100 95 53 28
n/a
117 117 98 98
2 15 10 66 51 29 9 95 80 48 23 112 112 93 93
3 10
n/a
61 46 24 4 90 75 43 18 107 107 88 88
4
n/a
56 41 19
n/a
85 70 38 13 102 102 83 83
5 51 36 14 80 65 33 8 97 97 78 78
6 46 31 9 75 60 28 3 92 92 73 73
7 41 26 4 70 55 23
n/a
87 87 68 68
8 36 21
n/a
65 60 18 82 82 63 63
9 31 16 60 45 13 77 77 58 58

Lennox ML193UHE Series Specifications

General

Brand	Lennox
Model	ML193UHE Series
Category	Furnace
Language	English