Lennox SL280UHV series Unit Information

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BLOWER DATA
SL280UH135V60D 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% 1875 2065
+18% 1785 1965
+12% 1695 1865
+6% 1605 1765
Factory Default 1515 1665
–6% 1425 1565
–12% 1330 1465
–18% 1240 1365
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
+ 1025 1120 1325 1650 1500 1600 1840 2235
Factory Default 965 1015 1180 1490 1420 1510 1700 2110
– 875 930 1060 1350 1225 1320 1505 1840
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.
SL280UH135V60D 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 72 99 123 145 177 204 228 253 277 180 208 244 299 334 374 408 432 478 511 539
Med-Low 80 108 137 164 194 224 252 280 308 214 249 291 340 384 422 450 493 530 579 619
Med-High 119 154 180 227 259 298 328 363 392 309 359 404 464 509 560 622 661 715 757 809
High 239 271 320 370 394 439 477 513 559 655 683 774 832 888 957 1022 1053 1122 1161 1206
Factory Default
Cooling
Speed
Low 52 79 95 120 147 167 188 215 238 127 161 197 238 277 316 349 386 412 457 493
Med-Low 63 87 116 137 158 188 210 239 262 160 194 229 280 317 350 395 431 451 502 540
Med-High 86 115 152 174 203 236 270 298 328 227 266 333 369 373 405 445 541 579 601 642
High 160 194 229 278 318 359 394 429 455 468 521 580 647 716 763 819 872 934 994 1053
– Setting
Cooling
Speed
Low 45 65 87 107 128 152 170 191 210 103 133 167 199 235 268 294 325 366 391 425
Med-Low 50 70 95 120 140 166 185 208 228 109 143 178 213 247 283 320 359 380 421 455
Med-High 71 97 123 147 175 204 228 254 279 171 203 235 294 328 370 401 439 478 515 543
High 127 160 196 232 265 299 334 369 403 294 343 402 457 510 576 619 673 720 781 835

Lennox SL280UHV series Specifications

General

Brand	Lennox
Model	SL280UHV series
Category	Furnace
Language	English