Special Information - STIEBEL ELTRON WWK 220 electronic Bedienung Und Installation

SPECIaL INfORMaTION

SPECIaL INfORMaTION
- The appliance may be used by children aged 8
and older and persons with reduced physical,
sensory or mental capabilities or a lack of ex-
perience and know-how, provided that they are
supervised or they have been instructed on how
to use the appliance safely and have understood
the potential risks. Children must never play with
the appliance. Children must never clean the ap-
pliance or perform user maintenance unless they
are supervised.
- Observe all applicable national and regional re-
gulations and instructions during installation.
- The appliance is not approved for outdoor
installation.
- Observe the minimum clearances (see chap-
ter "Installation / Preparations / Siting the
appliance").
- Observe the requirements concerning the ins-
tallation room (see chapter "Specification / Data
table").
- If the appliance is permanently connected to the
power supply, ensure that the appliance can be
separated from the power supply by an isolator
that disconnects all poles with at least 3 mm con-
tact separation. Contactors, circuit breakers or
fuses can be used for this.
- Observe the safety measures to prevent contact
with dangerous 'live' currents.
- Observe the fuse protection required for the ap-
pliance (see chapter "Specification / Data table").
- The power cable must only be replaced (for ex-
ample if damaged) with an original spare part by
a qualified contractor authorised by the manufac-
turer (connection type X).
- The appliance's DHW cylinder is pressurised. Du-
ring the heat-up process, expansion water will
drip from the safety valve.
- Regularly activate the safety valve to prevent
it from becoming blocked, e.g. by limescale
deposits.
- Drain the appliance as described in chapter "In-
stallation / Maintenance and cleaning / Draining
the cylinder".
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- Install a type-tested safety valve in the cold water
supply line.
- The maximum pressure in the cold water supply
line must be at least 20 % below the response
pressure of the safety valve. If the maximum
pressure in the cold water supply line is higher,
install a pressure reducing valve.
- Size the drain so that water can drain off unimpe-
ded when the safety valve is fully opened.
- Fit the discharge pipe of the safety valve with
a constant downward slope and in a room free
from the risk of frost.
- The safety valve discharge aperture must remain
open to atmosphere.
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