Page 46
BLOWER DATA
SLP98DF090XV60C BLOWER PERFORMANCE (less lter)
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 653 728 877 1027 1176 1326 1475 1625
Increase (+7.5%) Heat CFM 603 673 813 953 1092 1232 1372 1512
Default Heat CFM 553 618 748 878 1009 1139 1269 1399
Decrease (-7.5% ) Heat CFM 510 570 690 811 931 1051 1171 1292
Decrease (-15% ) Heat CFM 467 522 632 743 853 963 1074 1184
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 1110 1265 1395 1600 1600 1750 1965 2130
Default Cool CFM 1000 1145 1275 1445 1445 1625 1805 1975
Decrease (-10%) Cool CFM 885 1060 1145 1265 1265 1445 1645 1805
BLOWER DATA
SLP98DF110XV60C BLOWER PERFORMANCE (less lter)
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 811 906 1096 1286 1475 1665 1855 2045
Increase (+7.5%) Heat CFM 744 835 1017 1199 1380 1562 1744 1926
Default Heat CFM 677 764 938 1112 1285 1459 1633 1807
Decrease (-7.5% ) Heat CFM 626 707 869 1031 1193 1355 1517 1679
Decrease (-15% ) Heat CFM 575 650 800 950 1101 1251 1401 1551
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 1090 1260 1395 1580 1580 1790 1990 2180
Default Cool CFM 965 1125 1285 1440 1440 1625 1845 2000
Decrease (-10%) Cool CFM 860 1030 1125 1270 1270 1470 1655 1845
The effect of static pressure is included in air volumes shown. 
The following control congurations 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 ring rate based on rst- 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%, 38%, 70% and 100% (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.