Lennox SL280UHV series Unit Information

Page 3
BLOWER DATA
SL280UH070V36A 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% 1045 1145
+18% 985 1080
+12% 940 1035
+6% 880 960
Factory Default 850 925
–6% 785 875
–12% 745 815
–18% 680 745
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
+ 781 819 872 981 1045 1139 1219 1372
Factory Default 695 734 797 883 943 1005 1114 1260
– 645 674 720 815 847 922 991 1144
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.
SL280UH070V36A 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 32 55 70 94 111 131 152 174 194 100 123 144 170 196 232 260 266 299 306 343
Med-Low 43 66 87 103 128 147 167 190 217 134 153 185 211 241 266 291 316 342 367 384
Med-High 53 74 97 120 143 165 184 209 228 181 198 234 261 289 316 342 367 390 411 436
High 77 101 123 148 175 194 218 242 266 259 282 318 339 375 402 430 457 489 507 536
Factory Default
Cooling
Speed
Low 26 44 61 78 94 114 138 152 163 66 86 112 139 160 174 199 223 247 270 296
Med-Low 27 49 66 83 106 126 147 169 182 87 107 134 158 182 206 232 258 274 302 319
Med-High 37 57 78 104 122 138 167 186 203 127 150 173 207 237 267 288 313 340 360 390
High 60 85 101 123 148 167 193 211 236 197 218 249 277 306 333 358 388 412 434 454
– Setting
Cooling
Speed
Low 19 34 54 69 86 105 119 144 149 45 66 91 105 138 150 176 189 213 237 266
Med-Low 23 41 56 75 90 112 132 144 159 61 86 103 132 150 172 193 217 233 262 291
Med-High 24 45 63 82 102 121 139 161 183 84 107 139 153 178 204 234 259 280 304 325
High 38 59 81 104 123 145 170 188 208 136 158 190 213 236 268 290 318 339 367 390

Lennox SL280UHV series Specifications

General

Brand	Lennox
Model	SL280UHV series
Category	Furnace
Language	English