Lennox SL280UHNV Series User Manual

Page 17
BLOWER DATA
SL280UH080NV48B BLOWER PERFORMANCE (less fi lter)
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% 1350 1500
+18% 1270 1420
+12% 1200 1340
+6% 1130 1270
Factory Default 1060 1190
–6% 970 1130
–12% 880 1025
–18% 845 950
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
+ 640 870 1030 1200 1020 1310 1535 1750
Factory Default 590 770 925 1100 935 1200 1400 1600
– 545 635 750 960 815 1080 1260 1430
SL280UH080NV48B BLOWER PERFORMANCE (less fi lter)
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
1
Heating Speed
DIP Switch
Settings
First Stage Heating Speed - cfm Second Stage Heating Speed - cfm
+24% 1245 1385
+18% 1180 1320
+12% 1130 1245
+6% 1045 1185
Factory Default 1095 1120
–6% 1020 1050
–12% 825 975
–18% 840 865
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
+ 600 810 995 1165 995 1265 1490 1680
Factory Default 560 705 855 1050 905 1140 1350 1525
– 540 585 750 910 735 1010 1200 1365
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.

Lennox SL280UHNV Series Specifications

General

Brand	Lennox
Model	SL280UHNV Series
Category	Furnace
Language	English