Lennox SL280UHNV - Blower Performance Data

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BLOWER DATA
SL280UH060NV36A BLOWER PERFORMANCE (less 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% 1030 1140
+18% 965 1075
+12% 925 1020
+6% 870 965
Factory Default 825 915
–6% 775 865
–12% 735 810
–18% 685 760
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
+ 595 715 815 920 845 1015 1175 1340
Factory Default 565 680 735 840 790 945 1070 1215
– 510 610 695 780 715 845 980 1120
SL280UH080NV48B BLOWER PERFORMANCE (less 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
1
Cooling and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specic DIP Switch Settings.
2
Factory default setting.
NOTES - The e󰀨ect 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% and 38% of the selected second stage cooling speed - minimum 280 for SL280UH060NVA and 380 cfm for
SL280080NV48B.
Lennox iHarmony
®
Zoning System Applications - Minimum blower speed is 250 cfm for SL280UH060NV36A and 380 cfm SL280UH080NV48B.