Blower Performance Data - Lennox SIGNATURE SL280UHV Installation Instructions Manual

BLOWER DATA
SL280UH070V36A 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 Speed
1
DIP Switch
Settings
+24%
+18%
+12%
+6%
Factory Default
–6%
–12%
–18%
Cooling Speed
1
DIP Switch
Low
Settings
+ 781
Factory Default 695
– 645
SINGLE SIDE RETURN AIR
0 through 0.8 in. w.g. (Heating) and 0 through 1.0 in. w.g. (Cooling) External Static Pressure Range
Heating Speed
1
DIP Switch
Settings
+24%
+18%
+12%
+6%
Factory Default
–6%
–12%
–18%
Cooling Speed
1
DIP Switch
Low
Settings
+ 764
Factory Default 704
– 642
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
1
Settings.
Factory default setting.
2
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 500 cfm.
Lennox Harmony III™ Zone Control Applications - Minimum blower speed is 425 cfm.
First Stage Heating Speed - cfm
1045
985
940
880
850
785
745
680
First Stage Cooling Speed - cfm
Medium-Low Medium-High
819 872
734 797
674 720
First Stage Heating Speed - cfm
1050
1000
940
895
820
775
735
685
First Stage Cooling Speed - cfm
Medium-Low Medium-High
802 886
725 793
680 717
HEATING
Second Stage Heating Speed - cfm
COOLING
Second Stage Cooling Speed - cfm
High Low
2
981 1045
883 943
815 847
HEATING
Second Stage Heating Speed - cfm
COOLING
Second Stage Cooling Speed - cfm
High Low
2
977 1035
899 949
812 874
Page 39
1145
1080
1035
960
925
875
815
745
Medium-Low Medium-High
1139 1219
1005 1114
922 991
1165
1110
1040
975
935
855
805
750
Medium-Low Medium-High
1122 1248
1029 1135
933 1021
High
2
1372
1260
1144
High
2
1360
1257
1133