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Safety-related information
2.4
Safety notes
The product is manufactured in accordance with the
latest technical standards and is safe to use. However,
residual dangers to people and property may occur
during installation and operation.
2.4.1
Danger to life due to development of
legionella
The following must be ensured:
• The potable water temperature in the cold water
riser must not exceed 25 °C.
• The water in the potable water circuit must be ex-
changed completely at least once every 72 hours.
• The hot water temperature must not drop below
60 °C when using a circulation pipe. The tempera-
ture difference between the hot water outlet of the
heat exchanger and the return of the circulation pipe
at the station must not exceed 5 °C.
2.4.2
Danger to life due to electric current
f Ensure that the product can be disconnected from
the power supply at any time.
f Do not put the product into operation if there are
visible signs of damage.
The controller only has to be opened when
using accessory components. This means that
work on the power supply is only necessary
when using accessory components.
Any work on the power supply may only be carried out
by a qualifi ed electrician.
f Completely disconnect the product from the power
supply and protect it against accidental restart.
f Check that no voltage is present.
f The product may only be installed in dry indoor
areas.
2.4.3
Danger in case of inadequate personnel
qualifi cation
Any work on this product must only be carried out by
qualifi ed tradesmen.
As a result of their professional training and experience
as well as their knowledge of the relevant legal regu-
lations, qualifi ed tradesmen are able to carry out any
work on the described product professionally.
User
The user must be informed how to operate the product
by a qualifi ed installer.
8
2.4.4
Risk of scalding due to hot water
The setting or a defect of the controller may entail a rise
in the hot water temperature at the draw-off points up
to the heating water temperature in the buffer storage
cylinder.
According to DIN EN 806 and DIN 1988, all draw-
off points must be provided with protection against
scalding if there is a risk of scalding due to high heating
water temperatures in the buffer storage cylinder.
In case of low heating water temperatures in the buffer
storage cylinder and resulting low hot water tempera-
tures without risk of scalding at the draw-off points, the
user of the system has to be instructed so that the low
heating water temperature in the buffer storage cylinder
is guaranteed throughout the year.
2.4.5
Risk of injury from pressurised
components
f Before starting work on the heating circuit or the
potable water circuit, make sure that the system is
depressurised.
f Observe the permissible operating temperatures
during operation.
f Install a safety valve without isolating facility in the
potable water heating installation (DIN EN 806-2).
2.4.6
Risk of burns due to an uncontrolled
escape of hot fl uids
f Before starting work on the heating circuit or the
potable water circuit, make sure that the system is
depressurised.
f Before starting work, let the product cool down.
f Check that the product is not leaking after work is
complete.
f Wear safety goggles.
2.4.7
Risk of burns due to hot components and
surfaces
f Allow the product to cool down before working on it.
f Wear protective clothing to avoid unprotected con-
tact with hot system components.
2.4.8
Risk of injury due to the weight of the
product
f Always wear safety shoes during installation.
2.4.9
Risk of injury in case of improper work
Stored residual energies, angular components, points,
and edges on and in the product may cause injuries.
f Before starting work, make sure that there is enough
space.
f Handle open and hard-edged components with
care.
f Make sure that the work place is tidy and clean to
avoid accidents.
"Regumaq X-25"
138112581-V01.10.2019
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