Vaillant VRC 430 Operating and, Operating And Installation Manual

Page: 12 / 40

Operating instructions VRC 430 12
Changing the operating mode in the default display
Operating
mode Meaning
Auto(matic) The control of the heating circuit takes place in
accordance with the guideline of the target room
temperature, the time programmes and other
parameters, such as set-back temperature and
the heating curve.
In part, these parameters are set by your installer.
Manual The control of the boiler depends upon the set
room temperature.
OFF The heating circuit is switched off. The set target
room temperature is not displayed and also
cannot be altered.
Frost protection is guaranteed.
Table 4.3 Operating modes for the boiler
This is how to do it:
⇒
Turn the left-hand dial.
The operating mode is highlighted.
After a delay of 1 second, you can select the operating
mode.
⇒
Turn the left-hand dial further until the desired
operating mode is displayed.
After a delay of 2 seconds the value is saved and no
longer highlighted..
Th. 12.01.06
11:46
3.0 °C Outside
Manual
19.0 °C
> Select operation mode
Fig. 4.9 Changing the operating mode in the default display
Changing the room temperature in the default display
The control of the boiler is according to the set room
temperature. The control system ensures that the
set room temperature is reached rapidly and is
retained at this level.
The prerequisite for this is that the selected heating
curve corresponds to the conditions and the
function room temperature control is activated.
⇒
Turn the right-hand dial.
Instead of the room temperature, the current set room
temperature is highlightedd. After a delay of 1 second
you can select the new room temperature:
⇒
Turn the right-hand dial further until the desired
room temperature appears.
After a delay of 2 seconds, the new room temperature is
saved, the temperature is no longer highlighted and the
actual room temperature is displayed.
Th. 12.01.06
11:46
3.0 °C Outside
Auto
20.5 °C
> Select room temperature
Fig. 4.10 Changing the room temperature in the basic display
The new room temperature is used instead of the
programmed temperature until the end of the current
time programme. This duration depends upon the
operating mode; see also Chapter 4.4.
4.4 Changing the target room temperature
If you change a target value - either the room
temperature or the hot water target value - in the basic
display or in the default display, the new value overrides
the programmed temperatures..
When in „Manual“ mode, the control uses the temporary
temperatures until either the operation mode or the
temperature is changed.
When in „automatic“ mode, the control uses the
temporary temperature until the next time window
starts (if you have changed the set target value outside
a time window) or until the end of the current time
window (if you have changed the set target value within
the time window); see Fig. 4.11.
4 Operation