Lennox SL280UHV series Unit Information

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BLOWER DATA
SL280UH090V48B BLOWER PERFORMANCE (less lter)
SIDE RETURN AIR WITH OPTIONAL RETURN AIR BASE
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% 1295 1425
+18% 1235 1355
+12% 1170 1290
+6% 1110 1220
Factory Default 1045 1150
–6% 980 1080
–12% 920 1010
–18% 855 945
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
+ 660 905 1030 1175 985 1290 1495 1675
Factory Default 600 760 930 1045 905 1125 1345 1525
– 535 700 850 970 815 1040 1225 1385
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 380 cfm.
Lennox iHarmony
®
Zoning System Applications - Minimum blower speed is 380 cfm.
SL280UH090V48B 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 34 54 65 84 101 122 138 156 169 75 104 128 146 170 193 224 244 266 300 326
Med-Low 57 74 97 120 137 158 177 197 216 124 160 189 216 254 287 319 351 385 416 449
Med-High 76 102 125 147 174 200 223 248 272 208 238 279 319 350 391 422 457 489 529 564
High 106 134 165 193 224 259 283 313 340 302 346 386 426 470 510 554 596 640 680 722
Factory Default
Cooling
Speed
Low 31 47 59 74 89 105 123 139 150 64 88 107 131 150 173 196 217 241 263 285
Med-Low 43 61 82 101 118 144 158 177 194 94 123 150 183 213 243 279 300 331 353 393
Med-High 62 85 104 130 151 173 196 216 239 150 180 219 250 294 333 368 399 428 463 497
High 81 113 131 151 187 211 238 264 291 235 263 312 349 387 426 455 489 522 568 608
– Setting
Cooling
Speed
Low 29 40 53 69 83 93 104 122 129 50 69 85 107 127 149 169 187 201 222 237
Med-Low 32 50 66 84 101 116 136 153 172 78 105 126 146 174 199 223 247 272 295 319
Med-High 46 65 86 109 127 146 167 187 207 105 135 166 195 227 262 289 319 348 380 411
High 69 92 112 134 156 175 200 221 245 161 195 230 264 298 334 367 401 434 469 503

Lennox SL280UHV series Specifications

General

Brand	Lennox
Model	SL280UHV series
Category	Furnace
Language	English