Lennox SL280UHV series Unit Information

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BLOWER DATA
SL280UH090V48B BLOWER PERFORMANCE (less lter)
BOTTOM RETURN AIR
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% 1280 1410
+18% 1220 1340
+12% 1155 1270
+6% 1095 1205
Factory Default 1035 1135
–6% 970 1070
–12% 910 1000
–18% 845 930
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
+ 670 890 1040 1210 1030 1335 1550 1755
Factory Default 605 815 965 1090 940 1205 1405 1,600
– 525 690 850 985 795 1060 1260 1435
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 40 56 75 86 105 128 141 157 173 93 125 144 161 182 209 237 258 286 307 338
Med-Low 64 86 105 122 146 169 187 207 227 167 196 240 262 299 328 367 398 433 467 492
Med-High 93 119 141 163 189 213 237 261 286 259 287 321 374 410 451 481 518 555 581 611
High 128 156 188 219 248 281 308 338 366 372 407 465 493 558 604 661 706 726 764 817
Factory Default
Cooling
Speed
Low 35 51 64 79 92 107 122 138 159 81 105 122 139 159 186 200 221 247 263 286
Med-Low 50 65 85 114 130 148 173 179 200 112 142 173 206 234 271 300 323 356 395 419
Med-High 75 98 117 136 159 177 187 207 244 189 221 254 289 335 362 400 431 458 504 526
High 98 122 149 180 194 230 252 278 300 288 321 372 398 433 470 507 554 598 623 653
– Setting
Cooling
Speed
Low 32 44 57 71 82 95 107 121 132 74 94 112 130 147 174 189 206 226 245 264
Med-Low 43 60 76 91 109 127 143 159 176 86 119 134 161 185 212 236 257 290 320 342
Med-High 55 70 94 116 132 157 171 190 206 138 170 194 226 269 295 325 357 384 414 442
High 80 100 123 147 166 187 210 231 253 204 235 269 312 342 376 425 450 482 516 546

Lennox SL280UHV series Specifications

General

Brand	Lennox
Model	SL280UHV series
Category	Furnace
Language	English