Lennox SIGNATURE SLP99UH090XV48C User Manual

Page 17
TABLE 8
Maximum Allowable Intake or Exhaust 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.
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 - 7500’
Number
Of 90

Elbows
Used
1-1/2” Pipe 2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model Model
070 090 110 135 070 090 110 135 070 090 110 135 070 090 110 135
1
20
N/A N/A N/A
91 69 14
N/A
140 93 43
N/A
162 143 118 114
2
15 86 64 9 135 88 38 157 138 113 109
3
10 81 59
N/A
130 83 33 152 133 108 104
4
N/A
76 54 125 78 28 147 128 103 99
5
71 49 120 73 23 142 123 98 94
6
66 44 115 68 18 137 118 93 89
7
61 39 110 63 13 132 113 88 84
8
56 34 105 58
N/A
127 108 83 79
9
51 29 100 53 122 103 78 74
10
46 24 95 48 117 98 73 69
Standard Termination at Elevation 7501’ - 10,000’
Number
of 90
Elbows
Used
1-1/2” Pipe 2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model Model
070 090 110 135 070 090 110 135 070 090 110 135 070 090 110 135
1
12
N/A N/A N/A
66 44
N/A N/A
115 68
N/A N/A
137 118 93 89
2
7 61 39 110 63 132 113 88 84
3
N/A
56 34 105 58 127 108 83 79
4
51 29 100 53 122 103 78 74
5
46 24 95 48 117 96 73 69
6
41 19 90 43 112 93 68 64
7
36 14 85 38 107 88 63 59
8
31
N/A
80 33 102 83 58 54
9
26 75 28 97 78 53 49
10
21 70 23 92 73 48 44

Lennox SIGNATURE SLP99UH090XV48C Specifications

General

Brand	Lennox
Model	SIGNATURE SLP99UH090XV48C
Category	Furnace
Language	English