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BLOWER DATA
SL280DF080NV60C BLOWER PERFORMANCE (less filter)
0 through 0.8 in. w.g. (Heating) and 0 through 1.0 in. w.g. (Cooling) External Static Pressure Range
HEATING
1
Heating Speed
DIP Switch
Settings
First Stage Heating Speed - cfm
Second Stage Heating Speed - cfm
+24%
1475
1610
+18%
1385
1515
+12%
1335
1445
+6%
1255
1360
Factory Default
1175
1285
–6%
1100
1195
–12%
1050
1140
–18%
980
1045
COOLING
1
Cooling Speed
DIP Switch
Settings
First Stage Cooling Speed - cfm
Second Stage Cooling Speed - cfm
Low
Medium-Low Medium-High
2
High
Low
Medium-Low Medium-High
2
High
+
1090
1220
1380
1575
1575
1800
2000
2270
Factory Default
990
1110
1250
1440
1400
1600
1820
2050
–
890
995
1135
1300
1270
1435
1635
1855
1 Cooling and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific DIP Switch
Settings.
2 Factory default setting.
NOTES - The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% of the same second stage HEAT.
First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.
Continuous Fan Only speed is selectable at 28% and 38% of the selected second stage cooling speed - minimum 450 cfm.
Lennox
®
Smart Zoning System Applications - Minimum blower speed is 450 cfm.
