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T8624D CHRONOTHERM
INCREASE TIME SETTING
OR SCROLL FORWARD
THROUGH INSTALLER
SETUP AND SELF-TEST
SET CURRENT
DAY AND TIME
RETURN TO
NORMAL
OPERATIONS
ENTER
INDEFINITE
OR TIMED
HOLD MODE
SET CURRENT OR
PROGRAM DAY
CHANGE BETWEEN
DAYLIGHT SAVINGS
AND STANDARD TIME
COPY ONE PROGRAMMED
DAY TO ANOTHER DAY
Using Thermostat Keys
The thermostat keys are used to:
• set current day and time,
• program times and setpoints for heating and cooling,
• temporarily override program temperatures,
• display present setting,
• configure Installer Setup,
• check Self-Test,
• display outdoor temperature (select models),
• set the system operation,
• set the fan operation.
See Fig. 7 for the location of the keys.
SETTINGS
System and Fan Settings
The system default setting is Heat and the fan default
setting is Auto. Use the System and Fan keys to change
the settings. See Fig. 8. The fan settings can be set for
each program period individually. The system selection is
for all the program periods.
System settings control the thermostat operation as
follows:
Heat: The thermostat controls the heating.
Off: Both the heating and cooling are off.
69-1074
®
IV DELUXE ZONE MULTISTAGE THERMOSTAT
SET WAKE TIMES
AND SETPOINTS
Set Current
Run
Day/Time
Program
Hold Temp
Day
Daylight
Time
Fig. 7. T8624D key locations and descriptions.
SET LEAVE TIMES
AND SETPOINTS
SET RETURN TIMES
AND SETPOINTS
Time
Set Program
Wake
Leave
Return
Heat/Cool
System
Settings
Copy
DECREASE TIME SETTING
OR SCROLL BACKWARD
THROUGH INSTALLER
SETUP AND SELF-TEST
Cool: The thermostat controls the cooling.
Auto: The thermostat automatically changes between
heating and cooling operation, depending on the
indoor temperature.
Fan settings control the system fan as follows:
On: Fan operates continuously.
Auto: Fan operates with equipment.
Run
Set Current
Program
Day/Time
Hold Temp
Day
Daylight
Fig. 8. T8624D System and Fan key locations.
NOTE: Always press the keys with your fingertip or
similar blunt tool. Sharp instruments like a pen or
pencil point can damage the keyboard.
4
INCREASE TEMPERATURE
SETTING OR SCROLL
FORWARD THROUGH
INSTALLER SETUP OPTIONS
DECREASE TEMPERATURE
SETTING OR SCROLL
BACKWARD THROUGH
INSTALLER SETUP OPTIONS
DISPLAY INFORMATION
SUCH AS PRESENT
SETTINGS AND OUTDOOR
TEMPERATURE
SET SLEEP
TIMES AND
SETPOINTS
Sleep
SELECT FAN
OPERATION
Fan
SELECT SYSTEM
OPERATION
CHANGE BETWEEN
HEATING AND COOLING
SETPOINTS
Time
Set Program
Wake
Leave
Sleep
Return
Heat/Cool
System
Fan
Settings
Copy
Time
M10405
System
Fan
M15042
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