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BLOWER DATA
SL280UH110V60C BLOWER PERFORMANCE (less filter)
BOTTOM RETURN AIR, RETURN AIR FROM BOTH SIDES OR RETURN AIR FROM BOTTOM AND ONE SIDE
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
+
1060
Factory Default
970
–
875
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 450 cfm.
Lennox iHarmony
Zoning System Applications - Minimum blower speed is 450 cfm.
®
SL280UH110V60C BLOWER MOTOR WATTS (COOLING)
Cooling Speed
1
DIP Switch
Settings
0
0.1
+ Setting
Low
89
116 144 159 201 222 245 274 298 234 259 304 360 385 408 451 484 530 553 596
Med-Low 108 135 170 196 228 259 286 320 343 297 340 380 409 459 502 539 570 616 660 702
Cooling
Speed
Med-High 136 164 202 236 269 300 331 370 392 390 420 497 530 585 630 677 727 777 815 854
High
252 275 329 366 396 441 472 493 537 702 734 780 841 907 957 1013 1048 1100 1124 1148
Factory Default
Low
71
Med-Low 86
118 138 154 187 212 237 266 291 223 251 288 342 377 399 449 474 513 548 578
Cooling
Speed
Med-High 99
132 160 184 222 254 277 308 343 299 341 384 420 472 497 540 599 632 674 709
High
192 227 258 299 333 376 409 434 471 493 540 591 653 705 760 829 869 919 965 1005
– Setting
Low
60
Med-Low 68
Cooling
Speed
Med-High 80
109 128 151 174 204 229 252 279 224 251 293 326 370 398 439 467 491 531 570
High
131 165 196 226 265 300 336 356 397 365 406 460 511 558 603 643 705 743 792 835
First Stage Heating Speed - cfm
1690
1605
1525
1445
1360
1280
1200
1115
First Stage Cooling Speed - cfm
Medium-Low
Medium-High
1220
1075
980
Motor Watts @ Various External Static Pressures - in. wg.
First Stage
0.2
0.3
0.4
0.5
98
118 139 166 184 207 237 262 179 203 244 281 329 356 388 425 453 480 519
78
104 122 144 168 187 205 226 133 162 191 225 262 289 324 357 385 410 436
94
116 132 150 177 203 220 251 163 189 224 263 292 333 364 392 431 458 473
HEATING
COOLING
High
Low
2
1330
1565
1535
1180
1430
1400
1070
1255
1260
0.6
0.7
0.8
0
0.1
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Second Stage Heating Speed - cfm
1855
1765
1675
1585
1495
1405
1315
1230
Second Stage Cooling Speed - cfm
Medium-Low
Medium-High
1710
1565
1400
Second Stage
0.2
0.3
0.4
0.5
0.6
High
2
1910
2210
1715
2015
1560
1815
0.7
0.8
0.9
1.0
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