Controlling The Fan Operation; Controlling The Schedule - Lennox ComfortSense 7000 Series Programming And Application Manual

Controlling the Fan Operation

Fan Modes
If backlight is not on continuous, press the
screen anywhere to turn on the backlight.
Press the OPTIONS tab to access the FAN
mode control.
Press FAN button; repeated presses scroll
through all the modes, AUTO, ON, and
CIRC (circulate).
S
AUTO the fan is following schedule.
S
ON the fan is NOT following the schedule and runs
continuously until it is changed from the OPTIONS
screen.
S
CIRC the fan is following schedule and cycles during
periods of equipment inactivity. Cycle time is depen-
dent on user settings FAN CIRCULATE (Page 9).
If FAN mode displays AUTO and ON or CIRC was selected
during scheduling for the current period, the thermostat will
indicate the current fan mode in the information display
(FAN ON or FAN CIRC).

Controlling the Schedule

If backlight is not on continuous, press the
screen anywhere to turn it on. From the
HOME screen press SCHED; repeated
presses toggle the schedule ON and OFF.
If ON, the system follows the program
developed by the user (Page 6).
If OFF, the system operates as a non−programmable
In the CIRC mode, the user can cycle the fan for a
programmed percentage of active time per hour, during
periods of equipment inactivity (i.e., heating or cooling
equipment not running). The fan is ON for 5 minutes at a
time. The user may change the percentage of ON time that
the fan is on (see FAN CIRCULATE [Page 9]):
Fan Program
The user can program the fan to be ON, AUTO, or CIRC
during a program event period. While scheduling the
event, if the fan is set to ON, it will remain on during the
entire event. If it is set to CIRC, it will circulate during
equipment inactivity per user programmable cycles (see
FAN CIRCULATE, Page 9). If set to AUTO, the fan will
come on with the equipment to serve the heating/cooling
demand and go off accordingly.
NOTE − When the OPTIONS screen FAN mode is
changed to ON or CIRC, whatever was scheduled is
ignored − the fan will either be ON or it will CIRCULATE per
the user−programmed intervals (USER SETTINGS − FAN
CIRCULATE (Page 9). When FAN − AUTO is selected in
the OPTIONS screen, the schedule is followed.
thermostat the user must make changes when desired.
The autochangeover feature continues to operate based
on the manual user inputs.
The fan mode is displayed on the SCHEDULE screen
when programming the thermostat and can be changed
only during schedule editing (after EDIT is pressed). Fan
settings in OPTIONS screen will OVERRIDE the sched-
uled fan operation.
Page 5 ComfortSenset Touch Screen Thermostat