Vaillant VRC 430f Installation Manual download pdf (Page 12)

Operating Manual VRC 430 0020042468_0212

Changing the operating mode in the simplified basic

display

Operating

mode

Meaning

Auto(matic) The heating circuit is controlled according to

the target room temperature, the timer pro-

grammes, as well as other parameters such as

set-back temperature and heating curve.

Some of these parameters are set by your ex-

pert technician.

Manual The heating circuit is controlled according to

the room target temperature.

Off The heating circuit is switched off. The target

room temperature is not displayed and also

cannot be changed.

Frost protection is guaranteed.

Table 4.3 Operating modes for the heating unit

Proceed as follows:

⇒ Rotate the left-hand dial.

The operating mode is highlighted.

After a delay of 1 second, you can select the operating

mode by rotating the left-hand dial.

After 2 seconds, the display returns to normal.

The selected operating mode is accepted.

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 target room temperature in the default

display

The heating unit is controlled according to the room

target temperature. The control system ensures that

the target room temperature is achieved quickly and

maintained at this value.

For this to happen the selected heating curve must

correspond to the conditions and the room tempera-

ture control function must be activated.

⇒ Turn the right-hand dial.

The current room target temperature is highlighted

rather than the interior temperature. After a delay of 1

second you can select the new target room tempera-

ture:

⇒ Rotate the right-hand dial until the desired target

room temperature appears.

After a delay of 2 seconds the selected target room

temperature is accepted. The display then changes form

highlighted to normal and shows the internal tempera-

ture.

Th. 12.01.06

11:46

3.0 °C Outside

Auto

20.5 °C

> Select room temperature

Fig. 4.10 Changing the target room temperature in the basic

display

The period for which the new value remains valid de-

pends on the current operating mode; see also

Chapter 4.4.

4.4 The period of validity for new control system

target values

If you changed a set target value in the basic display —

either the room target temperature or the hot water

target value — the new value now applies to the entire

system.

In the "manual" operating mode the control system op-

erates according to the new value until either the oper-

ating mode or the value is changed.

In "automatic" operating mode the control system uses

the new value until the next period starts (if you

changed the set target value outside a time period) or

until the end of the current period (if you changed the

set target value within the time window; see Fig. 4.11.

4 Operation

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Vaillant VRC 430f Installation Manual Page 12

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