Honeywell RTH8580ZW - Basic Thermostat Operations; Setting Clock and Fan Operation

33-00131ES—01 12
1 Press CLOCK to display setting arrows.
2 Press s or t to adjust the time. (You can
advance the time more quickly by holding the
s or t buttons.)
3 Press DONE to save and exit (or press CANCEL
to exit without changing the time).
Note: You should never need to adjust the real-
time clock; it automatically updates for daylight
saving time and all date/time information is stored.
Note: To change the current week day format, see
“System setup” on page 17.
Setting the clock
SCHED HOLD CLOCK SCREEN MORE
WED
AM
FAN
AUTO
Inside
Set To
70
6:01
70
DONE CANCEL
WED
AM
FAN
AUTO
Inside
Set To
70
6:02
70
1 Press FAN to select fan operation.
2 Press DONE to save setting. Your selection
appears under FAN.
ON: Fan is always on.
AUTO: Fan runs only when the heating or
cooling system is on.
CIRC: Fan runs randomly, about 35% of
the time, including any run time with the
heating or cooling system.
Note: You can press FAN to override the fan
settings you’ve programmed for different time
periods. If you select ON or CIRC, the setting
you select will remain active until you press FAN
again to select AUTO.
Setting the fan
Note: If a fan schedule is
programmed, “Auto” will run the
fan schedule.
SCHED HOLD CLOCK SCREEN
WED
AM
SYSTEM
HEAT
Following
Schedule
Inside
Set To
70
6:01
70
FAN
AUTO