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ENGLISH
www.stiebel-eltron.com WWK222-302 H | 3
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 resulting 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 reg-
ulations and instructions.
- Observe the minimum clearances (see chap-
ter "Installation/ Preparations/ Siting the
appliance").
- Observe the requirements concerning the instal-
lation room (see "Specification/ Data table").
- The appliance is supplied with a flexible power
cable without plug. In the case of a permanent
connection, the appliance must be able to be sep-
arated from the power supply by an isolator that
disconnects all poles with at least 3mm contact
separation. Contactors, circuit breakers or fuses
can be used for this. This type of isolator must be
installed in the fixed electrical installation accord-
ing to the regulations. For Australia: Ensure that
the appliance can be separated from the power
supply by a suitable isolator. Contactors, circuit
breakers, fuses or general purpose electrical
wiring plugs can be used for this. The type of iso-
lator must be installed according to the electrical
installation regulations.
- Observe the safety measures to prevent contact
with dangerous 'live' currents.
- Observe the MCB/fuse protection required for
the appliance (see chapter "Specification/ Data
table").
- If the power cable is faulty, replace it with a new
one. The power cable must only be replaced (for
example if damaged) by a qualified contractor.
- The appliance is pressurised. During the heat-up
process, expansion water will drip from the safety
valve.
- Activate any valves at least once every 6months
to prevent blockages, e.g. by limescale deposits.
- Drain the appliance as described in "Installa-
tion/ Maintenance and cleaning/ Draining the
cylinder".
- A T&P valve or a cold water expansion control
valve, or both, must be installed. Observe all ap-
plicable national and regional regulations and
instructions.
- The maximum pressure in the cold water supply
line must be at least 20% below the lowest re-
sponse pressure of all installed safety valves. Oth-
erwise a pressure reducing valve is required. If
this is the case, install a pressure reducing valve
in the cold water supply line. The pressure reduc-
ing valve must be set to 540kPa if a safety valve
is installed; otherwise to 700kPa.
- Fit the drain pipe of the safety valve with a con-
stant downward slope and in a room free from
the risk of frost.
- Size the drain pipe so that water can drain off un-
impeded when the safety valve is fully opened.
- The safety valve drainage aperture must remain
open to atmosphere.
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