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T8624D CHRONOTHERM
®
IV DELUXE PROGRAMMABLE THERMOSTAT
68-0166—1
7
NOTE: Always press the keys with your fingertip or similar
blunt tool. Sharp instruments like a pen or pencil
point can damage the keyboard.
Temperature Settings
Refer to Table 5 for the default program. If the daytime energy
savings period is not used, press the period key (Leave or
Return) until the time is blank. The fan setting feature is
available on select thermostat models. See Programming
Section for complete instructions on changing the program.
Table 5. Default Program Settings.
—To change a setting, use the increase ▲ or
decrease ▼ key.
—To scroll the Installer Setup numbers backwards, press
the Time ▼▼ key.
—To exit the Installer Setup, press Run Program.
INSTALLER SETUP
NOTE: For most applications, the thermostat factory
settings will not need to be changed. Review the
factory settings in Table 6 and if no changes are
necessary, go to the Installer System Test section.
The Installer Setup is used to customize the thermostat to
specific systems. Some of the options include temperature
display, changeover and outdoor temperature display. Installer
Setup numbers are listed in Table 6. The table includes all the
configuration options and the factory settings for the
thermostat.
A combination of key presses are required to use the Installer
Setup feature.
—To enter the Installer Setup, press and hold the
Information i key with the increase ▲ and decrease ▼
keys until the first number is displayed. All display
segments appear for approximately three seconds before
the number is displayed. See Fig. 8 and 9.
—To advance to the next Installer Setup, press the
Time ▲▲ key.
Period Time
Heat
Setpoint
Cool
Setpoint
Fan
Setting
Wake 6:00 AM 70°F
(21°C)
78°F
(25.5°C)
Auto
Leave 8:00 AM 62°F
(16.5°C)
85°F
(29.5°C)
Auto
Return 6:00 PM 70°F
(21°C)
78°F
(25.5°C)
Auto
Sleep 10:00 PM 62°F
(16.5°C)
82°F
(28°C)
Auto
Fig. 8. Display of all the segments of the LCD.
Fig. 9. Display of Installer Setup number and setting.
CAUTION
Electric heat systems must be configured to 1 in
Installer Setup number 2 to prevent equipment
damage caused by the system running without
the fan.
IMPORTANT
Only configurable numbers are shown on the
device. Example: If thermostat does not have a
system key, Installer Setup Number 12 will not be
displayed. Review Table 6 factory settings and mark
any desired changes in the Actual Settings column.
When Installer Setup is complete, review the
settings to confirm that they match the system.
Aux Ht
Heat
Auto
System Fan
Off Auto
Wake
Mon
Wait
In
Room
Outdoor
%Humid
Auto
Sav
AM
PM
Hold for
Cool
Repl Batt
On
Recovery
DST
Cool
TueWedThuFriSatSun
LeaveReturnSleep
M10345
Set Program
Set Day/Time
Start Time
Temporary Setting Enrg
Em
Heat
Em Ht
M10404
INSTALLER SETUP
NUMBER DISPLAY
(COLUMN 2
OF TABLE 6)
FACTORY SETTING
OR OTHER CHOICE
DISPLAY (COLUMN 3
OR 5 OF TABLE 6)