Lennox SLP99UHV Series Unit Information page 14

BLO WER 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
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%
609 684
551 623
492 562
436 502
380 441
First Stage Cool Speed - cfm
Low Medium- Medium
Low High
1040 1225 1380
960 1085 1225
840 990 1085
Page 14
Heating Input Range and Blower Volume - CFM
50% 60%
835 986
769 914
702 842
633 765
564 687
Blower Speed Selections
High Low
(Default)
1550 1555
1415 1430
1250 1280
70% 80% 90%
1136 1287 1437
1059 1205 1350
983 1123 1263
896 1028 1159
810 932 1055
Second Stage Cool Speed - cfm
Medium- Medium
Low High
1920
1715
1565 1790
1450 1580
100%
1588
1496
1403
1291
1178
High
(Default)
2135
1980
1790