Lennox SL280DF090V48B Unit Information

Page 4
BLOWER DATA
SL280DF090V48B BLOWER PERFORMANCE (less lter)
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% 1360 1500
+18% 1285 1415
+12% 1220 1350
+6% 1135 1285
Factory Default 1075 1200
–6% 1030 1110
–12% 960 1050
–18% 890 975
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
+ 740 905 1040 1220 1085 1330 1545 1730
Factory Default 690 820 950 1110 990 1200 1400 1,595
– 610 745 855 1005 895 1075 1270 1460
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.
SL280DF090V48B 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 33 59 77 98 122 142 166 192 214 97 129 150 188 217 247 267 302 323 365 394
Med-Low 64 91 118 139 167 193 215 246 272 156 188 230 269 313 346 377 429 452 491 529
Med-High 92 119 150 174 209 240 261 292 319 281 304 361 413 455 473 528 552 607 637 673
High 136 174 200 236 264 305 342 376 399 442 470 538 566 603 636 691 730 775 814 838
Factory Default
Cooling
Speed
Low 23 50 63 84 104 124 150 168 194 74 103 126 155 183 210 243 264 290 316 349
Med-Low 45 74 98 114 140 163 192 216 247 120 155 192 223 246 276 314 352 382 412 458
Med-High 62 93 122 143 173 195 232 260 290 206 236 285 324 369 401 437 483 514 551 590
High 112 142 168 202 220 253 282 306 346 323 336 400 445 489 523 558 595 643 660 689
– Setting
Cooling
Speed
Low 17 38 56 72 88 115 132 150 170 51 78 106 129 155 178 207 229 259 289 311
Med-Low 31 54 76 97 117 142 165 187 209 92 122 147 178 217 244 264 289 322 361 385
Med-High 51 76 104 125 153 175 202 222 258 135 177 208 233 272 311 349 386 417 452 491
High 78 107 137 155 184 215 246 268 301 247 282 313 365 398 445 483 521 558 582 620

Lennox SL280DF090V48B Specifications

General

Brand	Lennox
Model	SL280DF090V48B
Category	Furnace
Language	English