Lennox SL280UHV series Unit Information

Page 12
BLOWER DATA
SL280UH110V60C BLOWER PERFORMANCE (less lter)
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
1
Heating Speed
DIP Switch
Settings
First Stage Heating Speed - cfm Second Stage Heating Speed - cfm
+24% 1690 1855
+18% 1605 1765
+12% 1525 1675
+6% 1445 1585
Factory Default 1360 1495
–6% 1280 1405
–12% 1200 1315
–18% 1115 1230
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
+ 1060 1220 1330 1565 1535 1710 1910 2210
Factory Default 970 1075 1180 1430 1400 1565 1715 2015
– 875 980 1070 1255 1260 1400 1560 1815
1
Cooling and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specic DIP Switch Settings.
2
Factory default setting.
NOTES - The e󰀨ect 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)
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 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
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
Cooling
Speed
Low 71 98 118 139 166 184 207 237 262 179 203 244 281 329 356 388 425 453 480 519
Med-Low 86 118 138 154 187 212 237 266 291 223 251 288 342 377 399 449 474 513 548 578
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
Cooling
Speed
Low 60 78 104 122 144 168 187 205 226 133 162 191 225 262 289 324 357 385 410 436
Med-Low 68 94 116 132 150 177 203 220 251 163 189 224 263 292 333 364 392 431 458 473
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

Lennox SL280UHV series Specifications

General

Brand	Lennox
Model	SL280UHV series
Category	Furnace
Language	English