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BLOWER DATA
SLP99UH090XV60C BLOWER PERFORMANCE (less filter)
SINGLE SIDE RETURN AIR
− Air volumes in
bold
require Optional Return Air Base and
field fabricated transition to accommodate
20 x 25 x 1 in. air filter in order to maintain proper air velocity.
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
609
684
835
986
1136
1287
1437
1588
Increase (+7.5%) Heat CFM
551
623
769
914
1059
1205
1350
1496
Default Heat CFM
492
562
702
842
983
1123
1263
1403
Decrease (-7.5% ) Heat CFM
436
502
633
765
896
1028
1159
1291
Decrease (-15% ) Heat CFM
380
441
564
687
810
932
1055
1178
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
1040
1225
1380
1550
1555
1715
1920
2135
Default Cool CFM
960
1085
1225
1415
1430
1565
1790
1980
Decrease (-10%) Cool CFM
840
990
1085
1250
1280
1450
1580
1790
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 380 cfm.
Lennox iHarmony
®
Zoning System Applications - Minimum blower speed is 450 cfm.