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BLOWER DATA
SL280UH090V60C BLOWER PERFORMANCE (less filter)
SINGLE SIDE RETURN AIR − Air volumes in bold require Optional Return Air Base and field fabricated transition to accommodate
20 x 25 x 1 in. air filter in order to maintain proper air velocity.
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
+
1050
Factory Default
955
–
840
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
75
104 122 142 163 189 214 239 264 219 243 283 317 363 384 424 441 484 511 543
Med-Low 98
128 150 181 205 236 259 289 317 289 333 351 405 444 490 523 564 604 636 668
Cooling
Speed
Med-High 144 172 205 242 279 306 344 367 396 417 451 507 557 605 655 694 733 788 824 867
High
245 272 307 359 386 421 447 473 520 709 743 795 855 906 955 1009 1049 1095 1131 1165
Factory Default
Low
66
Med-Low 79
104 127 147 173 201 225 248 268 222 246 284 328 370 397 416 460 490 519 555
Cooling
Speed
Med-High 106 137 164 190 215 250 278 307 333 307 349 387 435 463 505 553 599 634 674 714
High
192 224 260 298 338 365 400 438 467 563 597 664 717 756 820 881 907 972 1007 1039
– Setting
Low
44
Med-Low 63
Cooling
Speed
Med-High 82
108 131 151 178 203 229 253 274 236 263 302 344 382 420 443 478 514 548 583
High
127 159 187 213 252 281 305 338 371 361 393 450 494 537 586 616 672 711 752 787
First Stage Heating Speed - cfm
1360
1295
1230
1165
1100
1030
965
900
First Stage Cooling Speed - cfm
Medium-Low
Medium-High
1165
1060
945
Motor Watts @ Various External Static Pressures - in. wg.
First Stage
0.2
0.3
0.4
0.5
88
109 127 150 165 189 209 236 157 185 219 259 290 328 353 394 425 452 480
65
80
103 121 142 163 180 199 114 141 173 200 230 259 289 318 347 374 401
82
105 125 145 166 188 203 227 159 187 226 252 288 323 353 388 419 444 475
HEATING
COOLING
High
Low
2
1335
1620
1515
1215
1480
1390
1090
1290
1220
0.6
0.7
0.8
0
0.1
Page 11
Second Stage Heating Speed - cfm
1500
1425
1355
1280
1210
1135
1065
990
Second Stage Cooling Speed - cfm
Medium-Low
Medium-High
1680
1545
1385
Second Stage
0.2
0.3
0.4
0.5
0.6
High
2
1915
2225
1735
2060
1825
1580
0.7
0.8
0.9
1.0
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