THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ WITH EIM
73
68-0311—02
Setting the time/date
1.
Touch the current time. The screen displays Set Time/
Set Date.
Fig. 75.
2.
Touch Set Time or Set Date.
Fig. 76.
3.
Touch
or
until the proper time/date is displayed.
4.
Touch Done to save or Cancel to ignore changes.
Fig. 77.
NOTE: The thermostat will automatically switch to and
from Daylight Saving Time.
Setting the fan
1.
Touch FAN to display fan settings.
Fig. 78.
2.
Touch On, Automatic, Circulate, or Follow Schedule.
3.
Touch Done to save and exit.
Fig. 79.
•
On:
Fan is always on.
•
Automatic:
Fan runs only when the heating or
cooling system is on.
•
Circulate:
Fan runs randomly about 35% of the time
(residential use only).
•
Follow Schedule:
Fan controlled by program.
NOTE: In commercial use, touch Automatic or On to tem-
porarily override the programmed fan schedule.
Setting system mode
1.
Touch SYSTEM to display system settings.
Fig. 80.
2.
Touch desired option:
•
Heat:
Thermostat controls only the heating system.
•
Cool:
Thermostat controls only the cooling system.
•
Off:
Heating/cooling systems are off.
•
Automatic:
Thermostat selects heating or cooling as
needed depending on the indoor temperature.
•
Emergency Heat (heat pumps with aux. heat):
Controls auxiliary/emergency heat. Compressor is
locked out.
3.
Touch Done to save and exit.
Fig. 81.
NOTE: The Automatic and Emergency Heat system set-
tings may not appear, depending on how your
thermostat was installed.
Fri, Jun 14, 2013
6:30 pm
Done
30
FAN
Done
SYSTEM
Done
