Lennox SIGNATURE SLP99DFV 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 - 4500’
Number
Of 90

Elbows
Used
1-1/2” Pipe 2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model Model
070 090 110 070 090 110 070 090 110 070 090 110
1 15
N/A N/A
91 69 14 140 93 43 162 143 118
2 10 86 64 9 135 88 38 157 138 113
3
N/A
81 59
N/A
130 83 33 152 133 108
4 76 54 125 78 28 147 128 103
5 71 49 120 73 23 142 123 98
6 66 44 115 68 18 137 118 93
7 61 39 110 63 13 132 113 88
8 56 34 105 58
N/A
127 108 83
9 51 29 100 53 122 103 78
10 46 24 95 48 117 98 73
Standard Termination at Elevation 4501’ - 7500’
Number
of 90
Elbows
Used
1-1/2” Pipe 2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model Model
070 090 110 070 090 110 070 090 110 070 090 110
1 13
N/A N/A
66 69
14
115 93
43
137 143 118
2 8 61 64 110 88 132 138 113
9 38
3
N/A
56 59 105 83 127 133 108
N/A
33
4 51 54 100 78 122 128 103
28
5 46 49 95 73 23 117 123 98
6 41 44 90 68
18
112 118 93
7 36 39 85 63 107 113 88
13
8 31
34
80 58 102 108 83
29
9 26 75 53 97 103 78
24
10 21 70 48 92 98 73
Standard Termination 7501’ - 10,000”
Number
of 90
Elbows
Used
1-1/2 Pipe 2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model Model
070 090 110 070 090 110 070 090 110 070 090 110
1
N/A N/A N/A
41 44
N/A
90 68
N/A
112 118 93
2 36 39 85 63 107 113 88
3 31 34 80 58 102 108 83
4 26 29 75 53 97 103 78
5 21 24 70 48 92 98 73
6 16 19 65 43 87 93 68
7 11 14 60 38 82 88 63
8
N/A N/A
55 33 77 83 58
9 50 28 72 78 53
10 45 23 67 73 48
NOTE - Table 8 continued on next page with concentric terminations.

Lennox SIGNATURE SLP99DFV Specifications

General

Brand	Lennox
Model	SIGNATURE SLP99DFV
Category	Furnace
Language	English