Operating instructions for VED electric instantaneous water heater 0020149586_00 5
Material damage inside the unit caused by poor
quality water
A VED electric instantaneous water heater must only be
used to heat up drinking water. This potable water must
meet the specific German or Austrian legal requirements
for quality. Otherwise, it is not possible to rule out the
risk of corrosion inside the unit.
> Consult a competent person if you have any doubt as
to the requirements for water quality.
Risk of frost.
If a VED electric instantaneous water heater is placed
out of operation for a relatively long period of time in an
unheated room in cold weather, the water in the unit and
pipes may freeze.
> Consult a competent person if you have any doubt as
to requirements.
> Ensure that your VED electric instantaneous water
heater is installed in a permanently frost-free room.
Material damage to the unit caused by changes
No changes must be made to your VED.
In the event of a fault
> If your VED is not producing hot water or if any other
fault occurs, inform an approved heating specialist
company.
> If the VED ever malfunctions, inform your heating
specialist company.
> Do not carry out any repairs yourself.
> Do not open the unit cover under any circumstances.
3 Functions and operation
If you turn on the hot water at a draw-off point (mixer or
separate tap), your VED will automatically warm up the
drinking water.
a
Danger!
Risk of being scalded by hot water.
The water temperature at the draw-off points
can reach 60 °C.
> When using a VED electric instantaneous
water heater, be aware of the risk of scald-
ing from high outlet temperatures.
> There is a particular risk of scalding when-
ever your VED is set to stage II.
> In normal operating mode, set the output
selector on your VED to stage I to avoid
scalding
Fig. 3.1 Output selector
> Set the output selector to stage I or stage II.
– If the output selector is set to stage I, your VED is
in partial load operation. If the output selector is
set to stage II, your VED is in full load operation.
– For more information on the possible hot water
temperatures, refer to the "Technical Data" section
of the installation instructions.
Also take note of the following:
– The desired temperature may not be reached when
drawing large volumes in cold weather.
> If this occurs, briefly set the output selector to stage
II or reduce the water volume being drawn. In both
cases, the water temperature will increase very
quickly.
Safety 2
Function and operation 3