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BLOWER DATA
SL297UH080NV48C BLOWER PERFORMANCE (less filter)
SINGLE 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%
1,407
1,528
+18%
1,342
1,461
+12%
1,283
1,388
+6%
1,217
1,304
Factory Default
1,152
1,237
–6%
1,080
1,150
–12%
1,015
1,114
–18%
953
1,038
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
+
831
969
1103
1269
1096
1323
1541
1731
Factory Default
753
905
1008
1150
1005
1208
1385
1605
–
806
807
932
1045
920
1102
1269
1451
SL297UH080NV60C BLOWER PERFORMANCE (less filter)
BOTTOM RETURN AIR
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%
1591
2135
+18%
1503
2026
+12%
1426
1921
+6%
1334
1828
Factory Default
1277
1716
–6%
1197
1609
–12%
1124
1504
–18%
1037
1402
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
+
1094
1253
1388
1580
1584
1825
2065
2286
Factory Default
984
1155
1284
1445
1454
1659
1881
2092
–
868
1021
1152
1302
1301
1490
1693
1890
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 450 cfm.
Lennox iHarmony
®
Zoning System Applications - Minimum blower speed is 250 for 080NV48C and 450 cfm for 080NV60C.
