Operating instructions

6
Operating instructions ecoTEC plus 0020124810_FT1b
Preventing frost damage
If there is a power cut, or if the room temperature is set
too low in individual rooms, it cannot be ruled out that
sections of the heating system might be damaged by
frost.
> If you are going to be away during a cold period,
make sure the heating system remains in operation
and that the rooms are sufficiently heated.
> Always observe the information on frost protection
provided in section 4.9.
Maintaining operation with an emergency power
generator in the event of a power cut
Your heating engineer connected your boiler to the
power mains during installation.
If the power supply is cut, it is possible that parts of the
heating system may become damaged by frost.
If you want to maintain the operation of the boiler
during a power cut using an emergency power
generator, take note of the following:
> Make sure that the technical values of this generator
(frequency, voltage, earthing) match those of the
power mains.
> Contact your heating engineer for advice.
Changes to the surroundings of the boiler
A malfunction can result in a risk of poisoning and
explosion.
> Never shut down the safety devices.
> Never tamper with the safety devices as this can
prevent them from operating correctly.
A ban on modifications also applies to alterations to
structural elements in the vicinity of the boiler which
might affect its operational safety.
> Always contact an approved heating engineer to make
modifications to the boiler or its surroundings.
Example: Enclosing the boiler in a cabinet requires that
you observe special design instructions.
> Never enclose your boiler yourself.
> If you want to enclose the boiler in this way, you
should ask your heating engineer.
What to do if there are leaks in the hot water pipes
Take note of the following:
> If there is a leak in the hot water pipes between the
boiler and draw-off points, immediately turn off the
cold water stop valve and have your heating engineer
repair the leak.
With Vaillant ecoTEC plus boilers, the cold water stop
valve is not included in the scope of supply of your
boiler.
> Ask your heating engineer where he had fitted the
cold water stop valve.
Preventing damage caused by low system pressure in
the heating system
To prevent the heating system being used when the
amount of water is too low and to therefore prevent any
subsequent damage that may be caused by this, note
the following:
> Check the filling pressure of the heating system at
regular intervals.
> Always observe the information on frost protection
provided in section 4.3.4.
Requirements for the installation site
i
It is not necessary to keep a clearance
between the boiler and combustible materials
or components, since at the nominal heat
output of your boiler the temperature on the
surface of the housing is always lower than
the maximum permissible temperature of
85 °C.
2 Safety