Vaillant electronicVED plus Operating And Installation Instructions page 23

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Risk of death from electric shock from live lines and
connections!
The drinking water used must demonstrate resistance
greater than or equal to 900 ohm at 15 °C. Otherwise
the unit must not be used.
> Before installing the unit, ask your water company to
inform you about the water resistance and conductivity.
Risk of being scalded by hot water!
If the VED is connected to a solar thermal system, the
intake temperature must be limited to a maximum of
60 °C by fitting structural precautions (e.g. a mixer
valve). When using the unit in conjunction with a solar
thermal system, we recommend setting the intake tem-
perature to between 38 °C and 40 °C.
> Set the scald protection function on your
electronicVED plus to a maximum of 43 °C if you want
to be protected from scalding.
> Inform the operator that there is a risk of scalding
when the water temperature exceeds 43 °C.
Material damage inside the unit caused by poor
quality water
An electronicVED plus electric instantaneous water
heater must only be used to heat up drinking water. This
drinking water must meet the specific German or Aus-
trian legal requirements for quality. Otherwise, it is not
possible to rule out the risk of corrosion inside the unit.
Material damage due to improper use and/or
unsuitable tools
Improper use and/or the use of unsuitable tools may
result in material damage (e.g. water leaks).
> Always use a suitable open-end spanner to tighten or
undo threaded connections.
> Do not use pipe wrenches, extensions, etc.
Installation instructions for the electronicVED plus electric instantaneous water heater 0020149585_00
Risk of frost.
If an electronicVED plus 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.
> Install the electronicVED plus electric instantaneous
water heater in a permanently frost-free room.
> Store the electronicVED plus electric instantaneous
water heater in a permanently frost-free area.
Material damage to the appliance caused by changes
No changes must be made to the electronicVED plus.
> Do not make any changes to the unit yourself.
> Inform the operator that they must not make any
changes to the unit or to the electricity lines or water
pipes.
In the event of a fault
> Read the "Detecting and rectifying faults" section to
find out what you must do in the case of fault.
> Inform the operator that they must not attempt to
repair the unit under any circumstances.
> Inform the operator that they must not remove the
unit cladding.
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Safety 2
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