Vaillant VIHSGB2S Instructions d'exploitation télécharger pdf (Page 18)

Operating instructions ecoTEC plus 0020124810_FT1b

4.8 Switching the heating system off

4.8.1 Switching hot water production off (VU unit)

You can switch off cylinder charging without switching

off heating mode.

> Set the lowest possible hot water temperature by

pressing the following sequence of keys:

"Operating mode" selection button

--> "Next"

The hot water temperature is shown on the display.

> Change the hot water temperature to the lowest value

30 °C with the "Scroll down"

arrow key.

> Confirm the change by pressing the "OK" selection

button

Cylinder charging is switched off. Only the frost

protection function for the cylinder remains active.

4.8.2 Switching heating mode off ( summer mode)

Target flow temp.

1/4

Cancel Ok

Heating off

Fig. 4.11 Switching off heating mode (summer operation)

You can switch off the heating mode in summer without

switching off the hot water supply.

> Set the heating flow temperature to "Heating off"

with the "Scroll down"

arrow key.

> Confirm the change by pressing the "OK" selection

button

Heating mode is switched off.

4.8.3 Temporarily taking the boiler out of service

Caution!

Material damage caused by frost!

Frost protection and monitoring devices are

only active while the boiler is connected up to

the power mains and the on/off switch is on.

> Do not isolate the boiler from the power

mains.

> Leave your boiler switched on at the on/off

switch.

> Only switch the boiler on and off in normal

mode using the controller.

> Make sure that the boiler cannot become

damaged by frost.

Fig. 4.12 Switching off the boiler

> Press the on/off switch (1) to switch off the boiler.

If the boiler is switched off, the display (2) turns off.

If the boiler is going to be unused for longer

periods (e.g. holiday), you should also close

the gas stop cock and the cold water stop

valve, but only if there is no risk of frost.

The isolator devices are not included in the

scope of supply of your boiler. These are

installed are fitted by your heating engineer

on site.

> Ask your heating engineer to explain to you the

position and handling of these isolator devices.

4 Operation

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Vaillant VIHSGB2S Instructions d'exploitation Page 18

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