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BLOWER DATA
SL280UH070V36A BLOWER PERFORMANCE (less filter)
BOTTOM RETURN AIR
0 through 0.8 in. w.g. (Heating) and 0 through 1.0 in. w.g. (Cooling) External Static Pressure Range
HEATING
1
Heating Speed
DIP Switch
Settings
First Stage Heating Speed - cfm
Second Stage Heating Speed - cfm
+24%
1045
1145
+18%
985
1080
+12%
940
1035
+6%
880
960
Factory Default
850
925
–6%
785
875
–12%
745
815
–18%
680
745
COOLING
1
Cooling Speed
DIP Switch
Settings
First Stage Cooling Speed - cfm
Second Stage Cooling Speed - cfm
Low
Medium-Low Medium-High
2
High
Low
Medium-Low Medium-High
2
High
+
781
819
872
981
1045
1139
1219
1372
Factory Default
695
734
797
883
943
1005
1114
1260
–
645
674
720
815
847
922
991
1144
1
Cooling and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific DIP Switch Settings.
2
Factory default setting.
NOTES - The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% of the same second stage HEAT.
First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.
Continuous Fan Only speed is selectable at 28% and 38% of the selected second stage cooling speed - minimum 250 cfm.
Lennox iHarmony
®
Zoning System Applications - Minimum blower speed is 250 cfm.
SL280UH070V36A BLOWER MOTOR WATTS (COOLING)
1
Cooling Speed
DIP Switch
Settings
Motor Watts @ Various External Static Pressures - in. wg.
First Stage
Second Stage
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
+ Setting
Cooling
Speed
Low
32
55
70
94
111
131 152 174 194
100
123 144 170 196 232 260 266 299 306 343
Med-Low 43
66
87 103
128
147 167 190 217 134 153 185
211
241 266 291 316 342 367 384
Med-High 53
74
97
120
143 165 184 209
228 181
198 234 261 289 316 342 367 390 411 436
High
77
101
123 148 175 194
218
242 266 259
282
318 339 375 402 430 457 489 507 536
Factory Default
Cooling
Speed
Low
26
44
61
78
94 114 138 152 163 66
86
112
139 160 174 199 223 247 270 296
Med-Low 27
49
66
83 106 126 147 169
182
87 107 134 158
182
206 232 258 274 302 319
Med-High 37
57
78 104
122
138 167 186 203 127 150 173 207 237 267
288
313 340 360 390
High
60
85
101
123 148 167 193
211
236 197
218
249 277 306 333 358 388 412 434 454
– Setting
Cooling
Speed
Low
19
34
54
69
86 105 119 144 149 45
66
91 105 138 150 176 189 213 237 266
Med-Low 23
41
56
75
90
112
132 144 159 61
86 103 132 150 172 193 217 233 262 291
Med-High 24
45
63
82 102 121
139 161 183 84 107 139 153 178 204 234 259
280
304 325
High
38
59
81
104 123 145 170
188 208
136 158 190 213 236 268 290 318 339 367 390