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BLOWER DATA
SLP99DF110XV60C BLOWER PERFORMANCE (less filter)
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 250 cfm.
Lennox iHarmony
Zoning System Applications - Minimum blower speed is 450 cfm.
®
SLP99DF
Model
All Models
SLP99DF Model
All Models
35%
811
744
677
626
575
First Stage Cool Speed - cfm
Low
Medium-
Low
1090
1260
965
1125
860
1030
Allowable Heating Speeds
-15%
-7.5%
Allowed
Allowed
TABLE 25
Allowable Circulation Speeds
28%
(Second Stage Cool)
Allowed
Heating Input Range and Blower Volume - CFM
40%
50%
60%
906
1096
1286
835
1017
1199
764
938
1112
707
869
1031
650
800
950
Blower Speed Selections
Medium
High
High
(Default)
1395
1580
1285
1440
1125
1270
TABLE 24
Default
Factory
38%
(second stage cool)
Factory Setting
Page 47
70%
80%
1475
1665
1380
1562
1285
1459
1193
1355
1101
1251
Second Stage Cool Speed - cfm
Low
Medium-
Medium
Low
High
1580
1790
1990
1440
1625
1845
1270
1470
1655
+7.5%
Allowed
90%
100%
1855
2045
1744
1926
1633
1807
1517
1679
1401
1551
High
(Default)
2180
2000
1845
+15%
Allowed
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