Lennox SLP99UHV Series Unit Information page 18

BLO WER DATA
SLP99UH135XV60D 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
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 380 cfm.
Lennox iHarmony Zoning System Applications - Minimum blower speed is 450 cfm.
®
35% 40%
927 1010
844 923
760 836
703 775
646 715
First Stage Cool Speed - cfm
Low Medium- Medium
Low High
1070 1235 1385
985 1110 1245
870 1010 1110
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Heating Input Range and Blower Volume - CFM
50% 60%
1175 1340
1081 1239
987 1138
919 1064
852 989
Blower Speed Selections
High Low
(Default)
1535 1550
1395 1415
1260 1280
70% 80% 90%
1505 1671 1836
1398 1556 1714
1290 1441 1593
1208 1352 1496
1126 1263 1400
Second Stage Cool Speed - cfm
Medium- Medium
Low High
1720 1925
1605 1755
1435 1610
100%
2001
1873
1744
1641
1537
High
(Default)
2005
1970
1755