Lennox SL280UHNV - Page 9

Page 9
BLOWER DATA -05 and Later Models
SL280UH100NV60C BLOWER PERFORMANCE (less lter)
SIDE RETURN AIR
0 through 1.0 in. w.g. External Static Pressure Range
HEATING
1
Heating Speed DIP
Switch Settings
First Stage Heating Speed - cfm Second Stage Heating Speed - cfm
+24% 1580 1735
+18% 1495 1640
+12% 1420 1550
+6% 1335 1480
Factory Default 1265 1395
–6% 1175 1300
–12% 1110 1220
–18% 1035 1135
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
+ 1105 1155 1280 1470 1535 1615 1765 2050
Factory Default 995 1055 1175 1325 1375 1435 1600 1855
– 900 945 1050 1215 1260 1305 1435 1670
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 450 cfm.
Lennox
®
Smart Zoning System Applications - Minimum blower speed is 450 cfm.