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Page 8
BLOWER DATA
SLP99UH090XV36C BLOWER PERFORMANCE (less filter)
SINGLE SIDE RETURN AIR
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
657
702
792
881
971
1061
1150
1240
Increase (+7.5%) Heat CFM
631
673
757
841
926
1010
1094
1178
Default Heat CFM
605
644
723
802
880
959
1037
1116
Decrease (-7.5% ) Heat CFM
574
608
676
745
814
882
951
1020
Decrease (-15% ) Heat CFM
542
571
630
689
747
806
864
923
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
610
705
795
920
840
1015
1165
1300
Default Cool CFM
560
640
715
810
770
910
1050
1190
Decrease (-10%) Cool CFM
525
605
665
725
695
795
945
1110
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.