Lennox ML195UH User Manual

Page 18
TABLE 5
Maximum Allowable Vent Length in Feet
*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.
Standard Termination at Elevation 0 − 4500 ft
Number Of
90° Elbows
Used
2" Pipe 2−1/2" Pipe 3" Pipe
Model Model Model
045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
1 81 66 44 24
n/a
115 115 93 58
n/a
138 137 118 118 114
2 76 61 39 19 110 110 88 53 133 132 113 113 109
3 71 56 34 14 105 105 83 48 128 127 108 108 104
4 66 51 29
n/a
100 100 78 43 123 122 103 103 99
5 61 46 24 95 95 73 38 118 117 98 98 94
6 56 41 19 90 90 68 33 113 112 93 93 89
7 51 36 14 85 85 63 28 108 107 88 88 84
8 46 31
n/a
80 80 58 23 103 102 83 83 79
9 41 26 75 75 53 18 98 97 78 78 74
10 36 21 70 70 48 13 93 92 73 73 69
Standard Termination Elevation 4500 − 10,000 ft
Number Of
90° Elbows
Used
2" Pipe 2−1/2" Pipe 3" Pipe
Model Model Model
045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
1 81 66 44
n/a n/a
115 115 93 58
n/a
138 137 118 118 114
2 76 61 39 110 110 88 53 133 132 113 113 109
3 71 56 34 105 105 83 48 128 127 108 108 104
4 66 51 29 100 100 78 43 123 122 103 103 99
5 61 46 24 95 95 73 38 118 117 98 98 94
6 56 41 19 90 90 68 33 113 112 93 93 89
7 51 36 14 85 85 63 28 108 107 88 88 84
8 46 31
n/a
80 80 58 23 103 102 83 83 79
9 41 26 75 75 53 18 98 97 78 78 74
10 36 21 70 70 48 13 93 92 73 73 69

Lennox ML195UH Specifications

General

Efficiency	95% AFUE
Heating Stages	Single-stage
Blower Motor	PSC
Gas Valve	Single-stage
Energy Star Certified	Yes
Fuel Type	Natural Gas or Propane
Cabinet Type	Upflow/Horizontal
Warranty	5-Year Limited Warranty on covered components. 10-Year Limited Warranty on heat exchanger.
Vent Type	Direct vent