Bedienungsanleitung Vaillant VRC 430f (Seite 12 von 40) (Englisch)

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Operating instructions VRC 430f 0020042470_0112

Changing the operating mode in the default display

Operating

mode

Meaning

Auto(matic) The heating circuit is controlled according to

the target room temperature, timer pro-

grammes, and other parameters such as set

back-temp and heating curve.

Some of these parameters are programmed

by your heating engineer.

Manual The heating ciruit is controlled according to

the target room temperature.

OFF The heating circuit is switched off. The room

temperature is not displayed and cannot be

changed.

Frost protection is guaranteed.

Table 4.3 Operating modes for the heating unit

Proceed as follows:

Turn the left-hand dial.

The operating mode is highlighted.

After a delay of one second, you can select the operat-

ing mode by turning the left-hand dial.

After two seconds the display changes from highlighted

back to normal.

The selected operating mode is applied.

Th. 12.01.06

11:46

3.0 °C Outdoor

Manual

19.0 °C

> Change operating mode

Fig. 4.9 Changing the operating mode in the simplified display

Changing the room temperature in the simplified dis-

play

The heating unit is controlled according to the room

target temperature. The control system ensures that

the set room temperature is reached rapidly and is re-

tained at this level.

The prerequisite for this is that the selected heating

curve corresponds to the conditions and the thermo-

stat function is activated.

Turn the right-hand dial.

Instead of the room temperature, the current set room

temperature is highlighted. After a delay of one second

you can select the new room target temperature:

Turn the right-hand dial further until the desired

room temperature appears.

The selected room target temperature is applied after a

delay of two seconds. The display changes from being

highlighted back to normal and shows the current room

temperature.

Th. 12.01.06

11:46

3.0 °C Outdoor

Auto

20.5 °C

> change room target temperature

Fig. 4.10 Changing the room temperature in the basic display

This new value applies to the control for a specific peri-

od, depending on the operating mode selected; also see

Section 4.4.

4.4 Period of validity of changed control system

target values

If you have changed a set target value — either the tar-

get room temperature or the hot water target value — in

the basc display, the new value is applied to the control

system.

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 tempo-

rary 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

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