Honeywell T8624D

T8624D CHRONOTHERM

IV DELUXE PROGRAMMABLE THERMOSTAT

68-0166—1

4. Repeat steps 2 and 3 for all the periods to be cleared.

5. Press Run Program.

Setting Temporary Temperatures

Changing Temperature Setting Until the Next

Program Period

Press increase ▲ or decrease ▼ key until the desired

temperature setpoint is displayed.

NOTE: If ▼ or ▲ appear under the temperature display, it

means that both the heating and cooling setpoints

are being adjusted. Tapping the key will change both

the heat and cool setpoints by one degree. Press i

after the desired setpoint is reached to check the

setpoints.

NOTE: The display changes from the setpoint to the

room temperature after approximately

3 seconds.

5. Press Run Program to cancel the Hold and to return to

the program.

Changing Temperature Setting Until a Designated

Day and Period

1. Press Hold Temp twice.

M10332

Time Set Program

System Fan

Run

Program

Hold Temp

Set Current

Day/Time Wake Leave Return Sleep

Day Heat/Cool

Settings

Daylight

Time Copy

Heat

Wake

TemporarySetting

NOTE: The temporary temperature setting is displayed for

approximately 3 seconds. The setting is canceled

when the next period starts or when Run Program

is pressed.

Changing Temperature Setting Indefinitely

1. Press Hold Temp.

M10333

Time Set Program

System Fan

Run

Program

Hold Temp

Set Current

Day/Time Wake Leave Return Sleep

Day Heat/Cool

Settings

Daylight

Time Copy

Heat

Setting

2. Press increase ▲ or decrease ▼ key to change the

setting, if desired.

M10334

Time Set Program

System Fan

Run

Program

Hold Temp

Set Current

Day/Time Wake Leave Return Sleep

Day Heat/Cool

Settings

Daylight

Time Copy

Heat

Setting

3. Press Heat/Cool Settings to change between heat and

cool settings.

M10336

Time Set Program

System Fan

Run

Program

Hold Temp

Set Current

Day/Time Wake Leave Return Sleep

Day Heat/Cool

Settings

Daylight

Time Copy

Cool

Setting

4. Press increase ▲ or decrease ▼ key to adjust

temperature settings.

M10336

Time Set Program

System Fan

Run

Program

Hold Temp

Set Current

Day/Time Wake Leave Return Sleep

Day Heat/Cool

Settings

Daylight

Time Copy

Cool

Setting

M10337

Time Set Program

System Fan

Run

Program

Hold Temp

Set Current

Day/Time Wake Leave Return Sleep

Day Heat/Cool

Settings

Daylight

Time Copy

Heat

Wake

Hold for

Setting

2. Press Time ▲ ▲ or Time ▼ ▼ until the desired number of

days is displayed (1 to 256 days). (Example: 18 = Hold

will override the daily programs for 18 days)

M10338

Time Set Program

System Fan

Run

Program

Hold Temp

Set Current

Day/Time Wake Leave Return Sleep

Day Heat/Cool

Settings

Daylight

Time Copy

Heat

Wake

Hold for

Setting

Time

3. Press Wake, Leave, Return or Sleep to select the

period the program will start. (Example: Return =

thermostat will stop the Hold at the Return period

start time)

M10339

Time Set Program

System Fan

Run

Program

Hold Temp

Set Current

Day/Time Wake Leave Return

Return

Sleep

Day Heat/Cool

Settings

Daylight

Time Copy

Heat

Hold for

Return

Setting

4. Press increase ▲ or decrease ▼ key to adjust the

temperature setting, if desired. (Example: Heat 54° =

heating equipment will operate when the room

temperature is below 54°F)

M10340

Time Set Program

System Fan

Run

Program

Hold Temp

Set Current

Day/Time Wake Leave Return Sleep

Day Heat/Cool

Settings

Daylight

Time Copy

Heat

Hold for

Return

Setting

NOTE: When the System is set for Auto, both heat and cool

settings are needed. If the System is set for Heat,

only the Heat setpoint is needed or if Cool is

selected, only the Cool setpoint is needed.

5. Press Heat/Cool Settings to change between heat and

cool settings.