Lennox SL280UHV series Unit Information

Page 13
BLOWER DATA
SL280UH110V60C BLOWER PERFORMANCE (less lter)
SINGLE SIDE RETURN AIR − Air volumes in bold require Optional Return Air Base and eld fabricated transition to accommodate
20 x 25 x 1 in. air lter 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
1
Heating Speed
DIP Switch
Settings
First Stage Heating Speed - cfm Second Stage Heating Speed - cfm
+24% 1640 1805
+18% 1560 1715
+12% 1480 1630
+6% 1400 1545
Factory Default 1325 1455
–6% 1245 1370
–12% 1165 1280
–18% 1085 1195
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
+ 1020 1160 1285 1550 1505 1690 1855 2125
Factory Default 940 1050 1155 1400 1375 1525 1685 1935
– 835 945 1020 1250 1235 1380 1505 1730
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 84 116 131 156 193 216 238 265 292 218 245 293 336 378 415 454 488 516 557 601
Med-Low 99 128 156 195 216 245 280 309 335 292 333 381 412 454 490 535 577 618 662 704
Med-High 128 157 193 226 266 293 321 360 387 373 412 475 518 573 617 661 710 771 800 857
High 238 274 303 354 388 413 460 493 524 675 717 786 854 898 983 1017 1071 1112 1157 1186
Factory Default
Cooling
Speed
Low 73 96 121 140 154 184 206 228 255 166 192 237 271 319 345 382 419 459 480 515
Med-Low 81 108 133 156 175 207 230 253 285 220 248 290 328 372 405 447 474 513 540 577
Med-High 92 123 148 185 209 246 277 302 331 290 328 374 415 452 487 536 576 605 653 701
High 175 202 247 285 327 364 388 426 457 477 511 590 647 690 739 789 843 901 947 998
– Setting
Cooling
Speed
Low 56 74 98 116 141 157 179 199 216 129 157 198 221 259 298 325 354 387 418 451
Med-Low 69 92 111 132 155 174 197 214 243 166 186 232 268 289 339 365 389 429 454 479
Med-High 78 107 128 149 172 203 230 249 278 204 225 282 312 353 383 406 452 489 519 552
High 124 157 186 220 261 291 321 352 386 326 372 427 464 526 566 608 658 706 762 808

Lennox SL280UHV series Specifications

General

Brand	Lennox
Model	SL280UHV series
Category	Furnace
Language	English