6 720 641 683 (2009/09)
Operation | 7en
B Press and hold the Day button
(4) again and set the number of
days holiday by pressing the
/ buttons (max. 99 days –
the programme ends at mid-
night, so you should only count
the day of your return if you
don’t want the heating to come
on on that day).
B Set the temperature using the
/ buttons.
B Press the Set button (17) to
store the settings.
The display shows .
To cancel the holiday programme:
B Press and hold the Holiday but-
ton, , (18) for more than 2
seconds.
4.3.4 Resetting to default
settings (19)
B Press Reset button (19).
The clock will start flashing and
stop.
Until the time is set, the
TRZ 12-2 will keep the heating at
a constant 21 °C.
4.3.5 Technician’s functions
Calibrating the room temperature
sensor
Calibrating the room temperature
sensor changes the temperature
display. The temperature can be
adjusted by ± 3 K ( °C) in 1-K incre-
ments:
B While Automatic mode is active,
press the Set button (17) and at
the same time press and hold
the button for more than
2 seconds.
Temperature display shows
0,0 °C (default setting).
B Hold Set button (17) and release
button.
B Set room temperature sensor
calibration using / but-
tons.
B Press the Set button (17) to
store the setting.
Setting the switching differential
The switching differential can be
set to ± 1 K ( °C) or ± 0,5 K ( °C):
B While Automatic mode is active,
press and hold the Set button
(17) and the Hour button (3)
simultaneously for more than
2 seconds.
Temperature display shows
H 1,0 °C (default setting).
B Set switching differential using
/ buttons.
B Press the Set button (17) to
store the setting.
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