Lennox L3011C Installation Instructions Manual page 4

Table 3. DIP Switch Function Description
Desig­
nation
Description
1 - Cal 1 Room Temperature
Offset: 1°F
2 - Cal 2 Room Temperature
Offset: 2°F
3 - Cal +/- Room Temperature
Offset: Sign
4 - F/C Select Fahrenheit or
Celsius Display
5 - Fan Select Heating Fan
Option Operation:
(L3011C Electric (E) or
only) Gas (G)
5 - Back­ Select Backup Heat:
up Heat Electric (Aux) or
(L3021H Gas (Dual)
only)
Thermostat Calibration
The Cal 1, Cal 2 and Cal± DIP switches may be used to
offset or recalibrate the room temperature display. Table 4
provides DIP switch settings and corresponding tempera­
ture offset values.
L3011C Thermostats Only - If the fan operation DIP switch
506080-02 5/2017
Factory
Setting
Off On
0°F 1°F 0°F
0°F 2°F 0°F
Posi­ Neg­ Positive
tive ative
F C F
G E G
Aux Dual Aux
Page 4
is set on G, fan operation during the heating mode will be
controlled by the furnace, rather than by the thermostat. The
thermostat fan icon is not displayed during heating mode op­
eration, even though the fan may be energized. This setting
is used in applications which include a gas furnace. If the fan
operation DIP switch is set on E, the thermostat controls fan
operation during the heating mode. This setting is used in ap­
plications which include an electric furnace.
L3021H Thermostats Only - Restriction of the backup heat
functions requires the installation of the optional outdoor tem­
perature sensor (X2658). The sensor must be wired to the
subbase terminal strip T terminals. Use the backup heat DIP
switch to select either electric heat backup or gas heat back­
up.
Table 4. DIP Switch Temperature Offset
Cal 1 Cal 2 Cal +/- Temperature Offset
Off Off Off
On Off Off
Off On Off
On On Off
Off Off On
On Off On
Off On On
On On On
+0°F (no offset)
+1°F
+2°F
+3°F
-0°F (no offset)
-1°F
-2°F
-3°F