Page 4
BLOWER DATA
SLP99DF070XV36B BLOWER PERFORMANCE (less filter)
HEATING BLOWER PERFORMANCE - 0 through 0.8 in. w.g. External Static Pressure Range
Heating Adjust CFM Selections
Heating Input Range and Blower Volume - CFM
35%
40%
50%
60%
70%
80%
90%
100%
Increase (+15%) Heat CFM
495
543
639
735
830
926
1022
1118
Increase (+7.5%) Heat CFM
473
516
604
691
778
866
953
1041
Default Heat CFM
450
489
568
647
726
805
884
963
Decrease (-7.5% ) Heat CFM
430
467
540
614
687
761
834
908
Decrease (-15% ) Heat CFM
410
444
512
580
649
717
785
853
COOLING BLOWER PERFORMANCE - 0 through 1.0 in. w.g. External Static Pressure Range
Cooling Adjust CFM
Selections
Blower Speed Selections
First Stage Cool Speed - cfm
Second Stage Cool Speed - cfm
Low
Medium-
Low
Medium
High
High
(Default)
Low
Medium-
Low
Medium
High
High
(Default)
Increase (+10%) Cool CFM
625
785
890
995
910
1075
1230
1365
Default Cool CFM
575
710
830
890
845
960
1125
1265
Decrease (-10%) Cool CFM
520
615
710
820
755
885
985
1150
The effect of static pressure is included in air volumes shown.
The following control configurations are available. See Installation Instructions for details and DIP switch settings.
Heat Modes Available (Heating Blower Performance Table):
Single-stage thermostat:
- 35%, 70%, 100% input (three-stage) with time delays in-between
Two-stage thermostat:
- Variable Rate Capacity Mode - furnace automatically adjusts firing rate based on first- and second-stage cycle times.
- W1 demand at 70% input, W2 demand at 100% input. No delay between stages.
Cool Mode Available (Cooling Blower Performance Table):
First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.
Continuous Fan speeds are approximately 28% and 38% (DIP switch selectable) of the same second-stage COOL speed position minimum 250 cfm.
Lennox iHarmony
®
Zoning System Applications - Minimum blower speed is 250 cfm.
SLP99DF070XV36B BLOWER MOTOR WATTS - COOLING
Blower Speed
Options
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
Increase (+10%) Cool CFM
Low 20
37
57
71
90 108 128 142 162 67
90 110 136 159 184 200 226 252 271 292
Medium-Low 36
59
77
96 125 145 166 187 203 113 136 164 188 223 256 276 309 332 354 367
Medium-High 59
82 104 132 151 178 199 222 244 185 199 239 270 297 331 356 393 411 430 441
High 83 107 135 158 185 213 247 258 286 279 292 323 359 387 417 445 475 500 515 509
Default Cool CFM
Low 18
29
51
66
83
98 111 127 143 48
66
84 118 141 164 185 203 226 243 260
Medium-Low 27
50
64
84 105 124 146 162 185 89 109 142 160 188 211 240 262 286 312 327
Medium-High 39
60
81 109 136 162 183 194 220 126 145 183 209 244 272 301 330 358 378 401
High 65
82 112 144 164 185 207 227 257 209 218 261 292 320 352 384 400 424 448 462
Decrease (-10%) Cool CFM
Low 11
28
39
57
74
89 102 116 137 36
55
74
91 120 137 160 183 198 213 233
Medium-Low 23
37
57
77
92 112 128 143 156 63
83 105 132 162 181 208 227 251 268 291
Medium-High 32
54
70
87 113 133 149 172 189 90 112 144 164 200 216 246 275 303 326 342
High 47
67
91 115 139 163 184 203 224 134 151 192 222 255 287 320 348 370 395 414