4
Device description
Electronic room temperature controller with integrated time delay switch for
temperature-based single-room control. Heating units can be controlled
directly via the switched output for example.
Temperature measurement can be implemented optionally via the inte-
grated detector or an optional external detector.
The room temperature controller functions in a similar way to a time clock.
A heating program defines at which times automatic switching between the
different room temperatures is carried out. This enables the setting of a
reduced temperature at night or at times when a lower temperature is suf-
ficient, and to operate the heating system during the day with the normally
desired room temperature.
The room temperature controller can regulate your heating system to three
settable temperatures according to settable times:
•Thecomfort temperature is usually used for the daytime, or more pre-
cisely for the periods when you are present.
•Thelowering temperature is usually used for the night. This is also
called economy temperature and can only be selected in heating mode.
•Theanti-freeze temperature is usually used for longer periods of
absence (e.g. for holidays). The temperature is just high enough to pro-
tect the heating system against freezing.
Cooling function
The room temperature controller features a switch-over input (terminal K)
for control via a heat pump. If the heat pump switches to cooling mode in
summer, switching of the room temperature controller from heating to cool-
ing mode is automatic. In 'cooling' operating mode, the running time pro-
gram is interrupted and the cooling temperature is the setpoint.
Starting up the room temperature controller
When the room temperature controller is switched on for the first time as
well as after long deactivation periods, e.g. after a power failure for longer
than 4 hours, the room temperature controller jumps automatically to the
time input - the current data must be entered here.
(you can edit these data later --> for further information please refer to "Set-
ting the date and time – Uhr menu item" on page 7).
✓The hour display flashes
1. Set the hour with +or -.
2. Confirm with S.
✓The hour is set and the minute display
flashes.
3. Enter all further data in the same manner:
•Minutes
• Calendar year
•Month
•Day
4. Confirm each time with S.
✓After the last confirmation with Sthe normal display is shown.
Time format
You can have the time displayed in international 24 hour format (0H...23H)
or in the English-speaking a.m. (12AM...11AM) and p.m. format
(12PM...11PM). When you set the clock, the display begins with the
24-hour format, followed by the AM/PM format. Depending on the hour
format which you confirm with S, the time is displayed in future in
24-hour format or in AM/PM format.
