Lennox SLP99UHV Series Unit Information page 16

BLO WER DATA
SLP99UH110XV60C 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%
733 825
708 794
683 763
632 707
580 650
First Stage Cool Speed - cfm
Low Medium- Medium
Low High
1050 1195 1315
960 1095 1220
850 985 1095
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Heating Input Range and Blower Volume - CFM
50% 60%
1009 1194
967 1139
924 1085
857 1007
790 929
Blower Speed Selections
High Low
(Default)
1495 1515
1355 1360
1220 1215
70% 80% 90%
1378 1562 1747
1312 1484 1657
1245 1406 1566
1157 1307 1457
1069 1209 1348
Second Stage Cool Speed - cfm
Medium- Medium
Low High
1710 1870
1555 1755
1400 1555
100%
1931
1829
1727
1608
1488
High
(Default)
2065
1890
1755