Lennox SL280UHV series Unit Information

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BLOWER DATA
SL280UH090V36B 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% 1300 1420
+18% 1250 1335
+12% 1185 1285
+6% 1145 1240
Factory Default 1070 1170
–6% 1015 1100
–12% 970 1035
–18% 880 980
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
+ 616 755 846 980 1018 1197 1291 1399
Factory Default 571 698 767 886 909 1083 1197 1284
– 489 627 681 812 834 968 1081 1179
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 250 cfm.
Lennox iHarmony
®
Zoning System Applications - Minimum blower speed is 250 cfm.
SL280UH090V36B 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 13 29 43 62 73 86 105 122 137 63 85 105 134 159 186 207 230 252 275 292
Med-Low 27 46 64 84 102 119 137 159 177 112 136 157 193 224 247 277 300 321 350 372
Med-High 43 59 80 104 119 143 159 178 191 145 163 199 233 264 289 316 345 374 397 417
High 57 78 103 125 148 181 202 219 245 190 219 254 273 310 351 377 408 442 467 489
Factory Default
Cooling
Speed
Low 12 25 42 55 65 86 93 115 123 51 70 97 113 139 155 176 199 221 242 261
Med-Low 22 38 52 70 89 108 121 135 150 77 99 129 152 184 206 231 264 283 307 333
Med-High 27 46 64 85 103 123 141 157 179 112 136 157 193 224 247 277 300 321 350 372
High 51 68 90 110 136 150 172 198 211 145 164 197 232 257 290 320 351 362 396 411
– Setting
Cooling
Speed
Low 9 21 35 45 60 74 89 100 119 41 59 80 96 116 136 159 176 195 204 230
Med-Low 16 29 46 64 78 93 106 121 138 58 80 104 124 150 175 192 221 238 260 284
Med-High 22 40 54 68 90 108 125 141 153 73 94 125 152 177 203 228 258 279 304 326
High 36 53 72 91 112 131 150 169 185 99 125 154 182 207 234 266 296 320 344 369

Lennox SL280UHV series Specifications

General

Brand	Lennox
Model	SL280UHV series
Category	Furnace
Language	English