Vaillant VEN 5 plus, Instructions For Use And Installation

Page: 20 / 100

18
Operating instructions for electric domestic hot water cylinders VEN 5/6 U and O (plus) 0020129648_02
7 Operation
8 Energy saving tips
7.3 Heating water
The indicator lamp ( 2 ) lights up if the selected water
temperature has not yet been reached. The indicator
lamp goes out as soon as the selected water tempera-
ture is reached. The heating element switches off.
i
During the heating process, the water inside
will expand and warm water will drip out of
the swivel spout. This is normal for open-
vented cylinders and cannot be prevented by
closing the draw-off valve (valve) more tightly.
7.4 Activating frost protection
The water is prevented from freezing (with the electric
domestic hot water cylinder connected to the power). In
frost protection position (
¬ (1), Fig. 7.3, Fig. 7.4 ), the
water in the tank remains cold. The electric domestic hot
water cylinder is protected from freezing by a frost pro-
tection function (while connected to the power).
>
If there is a risk of frost, do not unplug the mains plug
under any circumstances
>
Do not remove any fuses in the electrical wiring under
any circumstances.
>
Set the temperature selector to the "frost protection"
position
7.5 Taking out of service
If the electric domestic hot water cylinder is to be placed
out of operation for a relatively long period of time in an
unheated room, the water in the electric domestic hot
water cylinder can be drained off (after disconnection
from the mains power supply).
8 Energy saving tips
You can help to save energy by following the tips and
advice below:
Appropriate hot water temperature
The hot water should only be heated up to the extent
that is necessary for use. Any further heating results in
unnecessary power consumption and hot water temper-
atures of more than 60 °C also lead to increased limes-
cale sediment.
For you, this means that you should:
>
Switch your electric domestic hot water cylinder to
economy mode position "E" for normal usage.
>
Always select the water temperature that you actually
require.
>
Turn the temperature selector to the "hot water"
position only in special cases where you need warmer
water than economy mode "E" is able to provide.
>
Turn the temperature selector back to economy mode
position "E" after you have taken the hot water that
you required.
Recommended setting
To save energy, we recommend economy mode "E"
(approximately 60 °C) for normal hot water require-
ments.
This will help you to save energy and keep limescale
formation low.