Lennox DAVE SIGNATURE SL280DFV Installation Instructions Manual page 17

Height Lateral
H L
(feet) (feet)
1
6 2
3
1
8 2
3
1
10 2
3
1
15 2
3
1
20 2
3
1
30 2
3
Vent
Height
4 inch
H
(feet)
FAN + FAN
6 92
8 101
10 110
15 125
20 136
30 152
Vent Connector Capacity
Type B Double-Wall Vents with Type B Double-Wall Connectors
Serving Two or More Category I Appliances
3 inch
Appliance Input Rating in Thousands of Btu Per Hour
Min Max Min
22 37
23 41
24 44
22 40
23 44
24 47
22 43
23 47
24 50
21 50
22 53
24 55
21 54
2 57
23 60
20 62
21 64
22 66
Common Vent Capacity
Type B Double-Wall Vents with Type B Double-Wall Connectors
Serving Two or More Category I Appliances
Vent and Connector Diameter - D (inches)
5 inch
Appliance Input Rating in Thousands of Btu Per Hour
FAN + NAT FAN + FAN
81 140
90 155
97 169
112 195
123 215
138 244
TABLE 6
Vent and Connector Diameter - D (inches)
4 inch
Max Min
35 66
37 75
38 81
35 72
36 80 51
37 87 53
34 78 49
36 86 51
37 92 52
33 89 47
35 96 49
36 102 51
33 99 46
34 105 48
35 110 50
31 113 45
33 118 47
34 123 48
TABLE 7
FAN + NAT FAN + FAN
116 204
129 224
141 243
164 283
183 314
210 361
Page 17
5 inch
Max Min
46 106 58
48 121 60
49 132 62
49 114 64
128 66
139 67
123 65
136 67
146 69
142 64
153 66
163 68
157 62
167 64
176 66
181 60
190 62
198 64
7 inch
FAN + NAT FAN + FAN
161 309
178 339
194 367
228 427
255 475
297 547
6 inch
Max
164
183
199
176
195
210
189
206
220
220
235
248
246
259
271
288
299
309
7 inch
FAN + NAT
248
275
299
352
394
459