Bedienungsanleitung Vaillant aquaPLUS VUI (Seite 11 von 12) (Englisch)

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Operation 3

Instructions for use VUI 362-7 11

3.7.2 To turn OFF central heating and hot water for

short periods of time

• Turn the main ON/OFF control (2) to the "0" position.

Note!

If you want to turn the aquaPLUS boiler OFF for

a longer period of time (e.g. holidays), and there

is no danger of frost, then you should also turn

off the gas supply, the cold water service valve

and the electrical supply. Please note the frost

protection hints in this regard.

Fig. 3.14: Shutting down the unit completely

3.8 Care and maintenance

Clean the outer casing of your boiler with a damp cloth

and a little soap. Do not use abrasive or solvent

cleaning agents that may damage the case or the plastic

fittings.

The appliance should be serviced at least once per year.

To ensure regular servicing, it is strongly recommended

that arrangements are made with your service agent or

Vaillant Ltd. For further details please contact Vaillant

Service Solutions: (0870 6060777).

3.9 Frost protection

Your boiler is equipped with a frost protection function:

If the heating water temperature drops below 5 °C when

the main switch is ON, then the boiler goes into

operation and heats the boiler circuit to approx. 30 °C.

Warning!

It cannot be guaranteed that water will circulate

throughout the entire heating system.

VRC-VC

If the boiler is not operated for several hours during

very cold weather there is therefore the possibility of

the system freezing. Please ensure that if you are

absent during a period of frost the central heating

remains in operation and all rooms are kept above

freezing point.

It must be remembered, however, that the boiler will be

automatically switched off by the built in monitoring

devices if certain faults occur, e.g. interruption in the gas

or electricity supply or faults in the flue gas system. To

overcome this possibility you can drain both the central

heating system and boiler.

Warning!

Frost protection and monitoring devices can

only function when the main switch of the unit

is set to the "I" position and the boiler is

connected to the electrical supply.

3.10 Troubleshooting

In the unlikely event that a problem occurs with the

operation of the aquaPLUS boiler, the following points

should be checked:

Boiler fails to operate:

• Is the gas supply turned on?

• Is the water supply turned on?

• Is there enough water in the heating system?

• Is the electrical supply switched on?

• Is the main ON/OFF control in the "On" position?

(switch position "I")

• Dry-running protection activated?

• Is the burner lock out indicator illuminated?

Hot water operates but no central heating

• Is the heating turned on?

• Are all external heating controls ON?

Warning!

If your boiler still does not operate then please

consult your installer or Vaillant Service

Solutions (0870 6060 777).

834641_12GB_032005.qxd 09.03.2005 16:42 Uhr Seite 11

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