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BLOWER DATA
SL280UH090V60C 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
+
1110
Factory Default
1005
–
890
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.
®
SL280UH090V60C BLOWER MOTOR WATTS (COOLING)
Cooling Speed
1
DIP Switch
Settings
0
0.1
+ Setting
Low
89
113 136 159 182 204 228 251 275 218 245 291 327 372 398 436 474 505 532 579
Med-Low 104 133 163 184 214 245 266 304 328 298 333 382 412 450 488 541 576 612 648 681
Cooling
Speed
Med-High 162 191 227 262 294 333 354 391 422 440 476 527 576 636 686 741 777 820 857 892
High
279 316 355 394 432 473 509 547 584 772 808 877 946 1000 1056 1089 1146 1190 1255 1266
Factory Default
Low
70
Med-Low 89
115 135 156 185 207 227 250 281 241 267 305 347 384 413 445 477 519 542 573
Cooling
Speed
Med-High 122 149 183 206 234 269 297 324 350 330 370 414 452 500 542 593 634 675 702 747
High
214 241 277 318 350 388 423 449 469 553 591 655 713 781 819 868 922 967 1026 1066
– Setting
Low
54
Med-Low 73
Cooling
Speed
Med-High 93
120 141 160 191 221 244 261 288 246 271 310 353 395 433 466 492 528 557 593
High
149 185 217 251 284 314 352 386 422 410 456 505 543 595 635 692 729 777 829 867
First Stage Heating Speed - cfm
1420
1355
1285
1215
1145
1080
1010
940
First Stage Cooling Speed - cfm
Medium-Low
Medium-High
1205
1100
1015
Motor Watts @ Various External Static Pressures - in. wg.
First Stage
0.2
0.3
0.4
0.5
92
108 134 159 174 196 215 242 160 195 228 265 291 340 364 397 442 469 500
70
91
110 129 154 166 185 200 107 151 177 206 245 272 298 332 398 423 449
94
112 135 151 175 189 214 235 173 201 244 272 304 337 368 393 437 465 498
HEATING
COOLING
High
Low
2
1420
1680
1575
1280
1545
1440
1125
1380
1295
0.6
0.7
0.8
0
0.1
Page 10
Second Stage Heating Speed - cfm
1565
1490
1415
1335
1260
1185
1110
1035
Second Stage Cooling Speed - cfm
Medium-Low
Medium-High
1740
1595
1450
Second Stage
0.2
0.3
0.4
0.5
0.6
High
2
2000
2305
1820
2125
1610
1930
0.7
0.8
0.9
1.0
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