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T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS
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. 9 for the location of the keys.
INCREASE TIME SETTING
OR SCROLL FORWARD
THROUGH INSTALLER SETUP
AND SYSTEM TEST
SET WAKE TIMES
AND SETPOINTS
SET CURRENT
DAY AND TIME
SET LEAVE TIMES
AND SETPOINTS
SET RETURN TIMES
AND SETPOINTS
RETURN TO
NORMAL
OPERATIONS
ENTER
INDEFINITE
OR TIMED
HOLD MODE
Run
Program
Set Current
Day/Time
Time
Wake
Set Program
Leave Return Sleep
SET CURRENT OR
PROGRAM DAY
CHANGE BETWEEN
DAYLIGHT SAVINGS
AND STANDARD TIME
Hold Temp Day
Daylight
Time
Copy
Heat/Cool
Settings
System Fan
COPY ONE PROGRAMMED
DAY TO ANOTHER DAY
DECREASE TIME SETTING OR
SCROLL BACKWARD THROUGH
INSTALLER SETUP AND SYSTEM TEST
Fig. 9. T8602D key locations and descriptions.
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
SELECT FAN
OPERATION
SELECT SYSTEM
OPERATION
CHANGE BETWEEN
HEATING AND COOLING
SETPOINTS
M14624
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. 10. 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.
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.
Time
Run
Program
Hold Temp
Set Current
Day/Time
Day
Daylight
Time
Copy
Wake
Heat/Cool
Settings
Set Program
Leave Return
System
Sleep
Fan
System
Fan
M14625
Fig. 10. Thermostat 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.
69-1510-4 4
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