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BLOWER DATA
SL280UH080NV48B BLOWER PERFORMANCE (less filter)
SIDE RETURN AIR WITH OPTIONAL RETURN AIR BASE
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%
1300
1445
+18%
1230
1355
+12%
1145
1300
+6%
1215
1225
Factory Default
1015
1150
–6%
1050
1070
–12%
860
1000
–18%
750
935
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
+
625
835
1000
1190
1000
1280
1500
1715
Factory Default
590
760
910
1070
910
1180
1360
1560
–
540
655
800
940
760
1040
1230
1380
SL280UH080NV60C BLOWER PERFORMANCE (less filter)
BOTTOM RETURN AIR, RETURN AIR FROM BOTH SIDES OR RETURN AIR FROM BOTTOM AND ONE SIDE
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%
1375
1530
+18%
1330
1450
+12%
1260
1390
+6%
1185
1315
Factory Default
1130
1235
–6%
1050
1165
–12%
980
1090
–18%
940
1020
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
+
1080
1235
1410
1655
1540
1745
2000
2300
Factory Default
975
1125
1290
1500
1390
1595
1815
2130
–
880
1010
1165
1360
1265
1440
1630
1930
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%, 38%, 70% and 100% of the selected second stage cooling speed - minimum 380 cfm.
Lennox iHarmony
®
Zoning System Applications - Minimum blower speed is 380 cfm for 08048B and 450cfm for 08060C