Lennox SIGNATURE SL280UHV Installation Instructions Manual page 41

BLOWER DATA
SL280UH090V48B 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
+ 670
Factory Default 605
– 525
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
+ 640
Factory Default 570
– 530
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 455 cfm.
First Stage Heating Speed - cfm
1280
1220
1155
1095
1035
970
910
845
First Stage Cooling Speed - cfm
Medium-Low Medium-High
890 1040
815 965
690 850
First Stage Heating Speed - cfm
1280
1220
1155
1095
1035
970
910
845
First Stage Cooling Speed - cfm
Medium-Low Medium-High
900 1015
780 930
700 810
HEATING
Second Stage Heating Speed - cfm
COOLING
Second Stage Cooling Speed - cfm
High Low Medium-Low
2
1210 1030
1090 940
985 795
HEATING
Second Stage Heating Speed - cfm
COOLING
Second Stage Cooling Speed - cfm
High Low
2
1175 1005
1040 895
955 795
Page 41
1410
1340
1270
1205
1135
1070
1000
930
Medium-High
1335 1550
1205 1405
1060 1260
1410
1340
1270
1205
1135
1070
1000
930
Medium-Low Medium-High
1295 1500
1160 1345
1050 1210
High
2
1755
1,600
1435
High
2
1670
1500
1405