Lennox ComfortSense L3511C Installation Instructions Manual page 4

L3511C & L3522C Thermostats Only − If the fan option
DIP switch is set on G, fan operation during the heating mode
will be controlled by the furnace, rather than the thermostat.
The thermostat fan icon is not displayed during heating mode
operation, even though the fan may be energized. This set-
ting 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
applications which include an electric furnace.
L3532HThermostats 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
backup.
506077−01 02/08
Table 5. DIP Switch Temperature Offset
Cal 1 Cal 2
Off Off
On Off
Off On
On On
Off Off
On Off
Off On
On On
Page 4
Cal +/− Temperature Offset
Off +0°F (no offset)
Off +1°F
Off +2°F
Off +3°F
On −0°F (no offset)
On −1°F
On −2°F
On −3°F