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BLOWER DATA
SL280UH070V36A BLOWER PERFORMANCE (less filter)
SINGLE SIDE RETURN AIR
0 through 0.8 in. w.g. (Heating) and 0 through 1.0 in. w.g. (Cooling) External Static Pressure Range
Heating Speed
1
DIP Switch
Settings
+24%
+18%
+12%
+6%
Factory Default
–6%
–12%
–18%
Cooling Speed
1
DIP Switch
Low
Settings
+
764
Factory Default
704
–
642
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.
1
Factory default setting.
2
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.
®
SL28UH070V36A BLOWER MOTOR WATTS (COOLING)
Cooling Speed
1
DIP Switch
Settings
0
0.1
+ Setting
Low
36
Med-Low 40
Cooling
Speed
Med-High 52
High
77
100 123 144 165 187 213 234 259 236 259 290 327 354 381 413 448 467 496 519
Factory Default
Low
22
Med-Low 30
Cooling
Speed
Med-High 32
High
55
– Setting
Low
17
Med-Low 22
Cooling
Speed
Med-High 28
High
36
First Stage Heating Speed - cfm
1050
1000
940
895
820
775
735
685
First Stage Cooling Speed - cfm
Medium-Low
Medium-High
802
725
680
Motor Watts @ Various External Static Pressures - in. wg.
First Stage
0.2
0.3
0.4
0.5
54
73
95
113 130 147 170 186
61
80
99
124 139 164 182 201 125 136 166 193 218 243 270 271 292 320 340
74
98
116 140 162 182 207 226 163 181 217 246 274 311 331 358 382 410 430
42
63
74
98
119 135 158 174
49
68
83
111 126 139 160 184
53
74
92
116 136 154 177 199 115 137 165 197 221 247 272 300 326 348 370
74
97
120 143 165 181 203 224 172 192 227 257 281 310 342 372 391 422 435
31
48
69
82
97
43
57
74
84
109 130 140 163
49
64
78
104 117 136 156 176
56
72
99
118 139 164 177 194 114 137 162 198 221 247 279 302 328 352 374
HEATING
COOLING
High
Low
2
886
977
1035
793
899
949
717
812
874
0.6
0.7
0.8
0
0.1
90
112 138 159 190 213 236 263 284 305 329
68
90
86
109 135 153 178 204 232 258 273 292 321
111 131 146
48
67
62
84
87
112 132 151 180 203 228 251 273 292 317
Page 4
Second Stage Heating Speed - cfm
1165
1110
1040
975
935
855
805
750
Second Stage Cooling Speed - cfm
Medium-Low
Medium-High
1122
1029
933
Second Stage
0.2
0.3
0.4
0.5
0.6
107 134 157 175 202 222 239 260 286
89
110 129 152 172 194 215 231 251
103 124 151 173 196 212 233 258 277
High
2
1248
1360
1135
1257
1021
1133
0.7
0.8
0.9
1.0
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