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BLOWER DATA
SLP99DF090XV48C BLOWER PERFORMANCE (less filter)
HEATING BLOWER PERFORMANCE - 0 through 0.8 in. w.g. External Static Pressure Range
Heating Adjust CFM Selections
Increase (+15%) Heat CFM
Increase (+7.5%) Heat CFM
Default Heat CFM
Decrease (-7.5% ) Heat CFM
Decrease (-15% ) Heat CFM
COOLING BLOWER PERFORMANCE - 0 through 1.0 in. w.g. External Static Pressure Range
Cooling Adjust CFM
Selections
Increase (+10%) Cool CFM
Default Cool CFM
Decrease (-10%) Cool CFM
SLP99DF090XV60C BLOWER PERFORMANCE (less filter)
HEATING BLOWER PERFORMANCE - 0 through 0.8 in. w.g. External Static Pressure Range
Heating Adjust CFM Selections
Increase (+15%) Heat CFM
Increase (+7.5%) Heat CFM
Default Heat CFM
Decrease (-7.5% ) Heat CFM
Decrease (-15% ) Heat CFM
COOLING BLOWER PERFORMANCE - 0 through 1.0 in. w.g. External Static Pressure Range
Cooling Adjust CFM
Selections
Increase (+10%) Cool CFM
Default Cool CFM
Decrease (-10%) Cool CFM
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 380 cfm.
®
35%
40%
723
790
690
752
656
714
601
654
545
593
First Stage Cool Speed - cfm
Low
Medium-
Medium
Low
High
775
940
1100
690
875
975
635
755
915
35%
40%
653
728
603
673
553
618
510
570
467
522
First Stage Cool Speed - cfm
Low
Medium-
Medium
Low
High
1110
1265
1395
1000
1145
1275
885
1060
1145
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Heating Input Range and Blower Volume - CFM
50%
60%
925
1060
878
1004
831
948
761
867
690
787
Blower Speed Selections
Second Stage Cool Speed - cfm
High
Low
(Default)
1255
1120
1135
1000
1025
920
Heating Input Range and Blower Volume - CFM
50%
60%
877
1027
813
953
748
878
690
811
632
743
Blower Speed Selections
Second Stage Cool Speed - cfm
High
Low
(Default)
1600
1600
1445
1445
1265
1265
70%
80%
90%
1195
1329
1464
1129
1255
1381
1064
1181
1297
974
1081
1188
884
981
1078
Medium-
Medium
Low
High
1340
1535
1220
1425
1100
1270
70%
80%
90%
1176
1326
1475
1092
1232
1372
1009
1139
1269
931
1051
1171
853
963
1074
Medium-
Medium
Low
High
1750
1965
1625
1805
1445
1645
100%
1599
1507
1414
1295
1175
High
(Default)
1745
1625
1470
100%
1625
1512
1399
1292
1184
High
(Default)
2130
1975
1805
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