TL8100
69-2018EFS—01 2
3. SET THE TIME AND DAY
1. Set the time, using the HOUR and MINUTE buttons.
2. Set the day, using the DAY button.
4. AUTOMATIC MODE
Use automatic mode if you want the
thermostat to follow the programmed
schedule. The thermostat will switch from the
Comfort temperature to the Economy
temperature, or vice versa according to the
schedule.
To use the automatic mode, press the
Manual/Auto button repeatedly until
appears on the screen.

Temporary Bypass

You can bypass the temperature setpoint of the current period
when the thermostat is in Automatic mode.
To do so, press one of button until the desired
temperature is displayed or select a preset temperature by
pressing the corresponding button ( , or ).
You can cancel the bypass, by pressing the Manual/Auto
button twice, before it cancels automatically at the start of the
next period.

Schedule Programming

You can program up to 4 periods in a day. The Comfort
temperaure is used in periods 1 and 3 and the Economy
temperature is used in periods 2 and 4. The start time of each
period can be different for each day of the week.
For each day, enter the time you wake up (period 1), the time
you leave for work (period 2), the time you return home
(period 3) and the time you go to sleep (period 4):
NOTE: For periods 1 and 3, set the start time earlier by at
least 15 minutes for every 2°F (1°C) that the temper-
ature needs to rise. For example, if you lower the
temperature by 6°F (3°C) at night and you wake up
at 7:00 a.m., set period 1 to 6:15a.m.
• Press Program to enter the programming mode. The
thermostat will display MO (Monday) and PROG 1 (period
1).
• To select another day, press Day.
•NOTE: To select all 7 days, hold Day for 3 seconds. When
all 7 days are selected, the start time of the period being
displayed will be the same every day.
• To select another period, press Program.
• Press Hour and Min to set the start time for the displayed
period. If you want the thermostat to skip a period, press
Clear, the time display of the displayed period becomes
--:--.
• Press Manual/Auto to exit.
NOTE: If you do not press any button for 60 seconds, the
thermostat will automatically exit the programming
mode and save any changes made.
5. MANUAL MODE
In manual mode, the programmed schedule is
not followed. Use this mode if you wish to set
the temperature manually or maintain the
same temperature all the time.
To use the manual mode, press the Manual/
Auto button repeatedly until the hand icon
appears on the screen.
Press one of buttons until the desired
temperature is displayed or select a preset
temperature by pressing the corresponding button ( , or
).
6. VACATION MODE
In Vacation mode, the thermostat is set to the
Vacation temperature. There are 2 ways to
place the thermostat in Vacation mode.
• Press on the thermostat.
• From the remote control system or home
automation system.
NOTE: The Vacation mode can only be
deactivated remotely if it has been
activated remotely.
7. BATTERY REPLACEMENT
An icon appears when the
batteries must be
replaced. The icon
remains on the display for
60 days. Afterwards, the
thermostat will cut power
to the heating system.
The time and programming
are saved for the first 15
seconds when the
batteries are removed.
Period Associated Temperature Time
1 Comfort Wake up
2 Economy Leave home
3 Comfort Return home
4 Economy Sleep