Lennox SL280UHV series Unit Information

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BLOWER DATA
SL280UH090V48B BLOWER PERFORMANCE (less lter)
SINGLE SIDE 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
+ 640 900 1015 1175 1005 1295 1500 1670
Factory Default 570 780 930 1040 895 1160 1345 1500
– 530 700 810 955 795 1050 1210 1405
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 68 85 102 120 142 159 177 79 107 133 148 172 201 226 253 274 301 327
Med-Low 64 85 105 124 145 166 186 206 227 151 179 214 247 276 312 339 370 399 433 464
Med-High 85 112 135 157 184 208 233 258 284 230 261 305 348 379 421 453 490 523 565 602
High 110 139 172 201 234 270 294 326 352 478 369 414 462 506 547 597 643 691 735 781
Factory Default
Cooling
Speed
Low 30 46 59 77 87 106 118 143 152 70 93 115 134 153 172 195 219 242 260 286
Med-Low 36 56 76 95 120 136 162 175 196 100 132 163 192 214 244 276 307 338 368 402
Med-High 64 88 106 130 149 173 198 222 238 166 192 231 266 303 342 370 410 444 462 493
High 87 118 141 161 194 223 248 275 302 245 273 333 365 396 432 460 503 546 579 635
– Setting
Cooling
Speed
Low 28 43 53 70 83 97 110 120 135 53 72 88 112 133 150 175 191 205 230 245
Med-Low 37 56 72 86 106 124 141 158 176 84 111 134 154 185 215 235 260 284 311 336
Med-High 51 69 90 109 129 152 168 187 205 119 152 182 210 244 276 307 338 370 401 432
High 71 94 119 138 158 181 207 233 250 180 211 248 284 316 355 385 419 450 487 521

Lennox SL280UHV series Specifications

General

Brand	Lennox
Model	SL280UHV series
Category	Furnace
Language	English