Lennox iComfort SL280UH070V36A Manual page 22

BLOWER DATA
SL280UH090V48B BLOWER PERFORMANCE (less filter)
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 Speed
1
DIP Switch
Settings
+24%
+18%
+12%
+6%
Factory Default
–6%
–12%
–18%
Cooling Speed
1
DIP Switch
Low
Settings
+ 640
Factory Default 570
– 530
Cooling and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific DIP Switch
1
Settings.
Factory default setting.
2
NOTES - The effect 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%, 38%, 70% and 100% of the selected second stage cooling speed - minimum 380 cfm.
Lennox Harmony III™ Zone Control Applications - Minimum blower speed is 380 cfm.
SL280UH090V48B BLOWER MOTOR WATTS (COOLING)
Cooling Speed
1
DIP Switch
Settings
0 0.1
+ Setting
Low 34 54
Med-low 64 85
Cooling
Speed
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
Low 30 46
Med-low 36 56
Cooling
Speed
Med-High 64 88
High 87 118 141 161 194 223 248 275 302 245 273 333 365 396 432 460 503 546 579 635
– Setting
Low 28 43
Med-low 37 56
Cooling
Speed
Med-High 51 69
High 71 94
First Stage Heating Speed - cfm
1280
1220
1155
1095
1035
970
910
845
First Stage Cooling Speed - cfm
Medium-Low Medium-High
900 1015
780 930
700 810
Motor Watts @ Various External Static Pressures - in. wg.
First Stage
0.2 0.3 0.4 0.5 0.6
68 85 102 120 142 159 177
105 124 145 166 186 206 227 151 179 214 247 276 312 339 370 399 433 464
59 77 87 106 118 143 152
76 95 120 136 162 175 196 100 132 163 192 214 244 276 307 338 368 402
106 130 149 173 198 222 238 166 192 231 266 303 342 370 410 444 462 493
53 70 83 97 110 120 135
72 86 106 124 141 158 176
90 109 129 152 168 187 205 119 152 182 210 244 276 307 338 370 401 432
119 138 158 181 207 233 250 180 211 248 284 316 355 385 419 450 487 521
HEATING
Second Stage Heating Speed - cfm
COOLING
Second Stage Cooling Speed - cfm
High Low
2
1175 1005
1040 895
955 795
0.7 0.8 0 0.1 0.2
79 107 133 148 172 201 226 253 274 301 327
70 93 115 134 153 172 195 219 242 260 286
53 72 88
84 111 134 154 185 215 235 260 284 311 336
Page 22
1410
1340
1270
1205
1135
1070
1000
930
Medium-Low Medium-High
1295 1500
1160 1345
1050 1210
Second Stage
0.3 0.4 0.5 0.6 0.7
112 133 150 175 191 205 230 245
High
2
1670
1500
1405
0.8 0.9 1.0