Lennox SL280UHNV Series User Manual

Page 18
BLOWER DATA
SL280UH080NV48B BLOWER PERFORMANCE (less fi lter)
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 fi lter)
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 specifi c 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

Lennox SL280UHNV Series Specifications

General

Brand	Lennox
Model	SL280UHNV Series
Category	Furnace
Language	English