Lennox SLP99UHV Series Unit Information page 51

*Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Both Intake and Exhaust m
NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation
Number 1-1/2" Pipe
Model
of 90̊
Elbows
070 090
Used
1
15
2
10
3
4
5
N/A
6
N/A
7
8
9
10
Number
1-1/2" Pipe
of 90̊
Model
Elbows
070 090
Used
1
10
2
3
4
5
N/A
6
N/A
7
8
9
10
TABLE 24 Continued
Maximum Allowable Intake or Exhaust Vent Length in Feet
Concentric Termination 0 - 7501"
2" Pipe
Model
110 135 070 090
83 67
78 62
73 57
68 52
63 47
N/A N/A
58 42
53 37
48 32
43 27
38 22
Concentric Termination 7501" - 10,000"
2" pipe
Model
110 135 070 090
58 42
53 37
48 32
43 27
38 22
N/A N/A
33 17
28 12
23
18 N/A
13
2-1/2" Pipe
Model
110 135 070 090
12 130 89
7 125 84
120 79
115 74
110 69
N/A
105 64
N/A
100 59
95 54
90 49
85 44
2-1/2" Pipe
Model
110 135 070 090
105 64
100 59
95 54
90 49
85 44
N/A N/A
80 39
75 34
70 29
65 24
60 19
Page 51
ust be same pipe size.
3" Pipe
Model
110 135 070 090
39 146 139
34 141 134
29 136 129
24 131 124
19 126 119
N/A
14 121 114
116 109
111 104
N/A
106 99
101 94
3" Pipe
Model
110 135 070 090
121 114
116 109
111 104
106 99
101 94
N/A N/A
96 89
91 84
86 79
81 74
76 69
110 135
114 105
109 100
104 95
99 90
94 85
89 80
84 75
79 70
74 65
69 60
110 135
89 80
84 75
79 70
74 65
69 60
64 55
59 50
54 45
49 40
44 35