OPERATION
Appliance description
Material losses
!
If the drain pipe of the safety valve is sealed, the expan-
sion water may cause water damage.
f Never close the drain pipe.
f
Material losses
!
The user should protect the appliance and its tap against
frost.
2.3
Test symbols
See type plate on the appliance.
3.
Appliance description
The sealed unvented (pressurised) appliance constantly maintains
the water content at the pre-selected temperature. The appliance
switches on automatically as soon as its temperature falls below
the set value.
Subject to season, varying cold water temperatures can result in
different maximum mixed water and outlet volumes.
Note
A qualified contractor can set a temperature limit on the
appliance (see "Installation / Settings / Setting the tem-
perature limit").
Note
The appliance is under mains water pressure. The water
volume increases as the cylinder is being heated up. Dur-
ing this process, expansion water drips out through the
safety valve. This is a necessary and normal process.
3.1
Operation
You can set any required DHW outlet temperature at the tem-
perature selector. The heat-up indicator illuminates during the
heat-up process.
1 Heat-up indicator
2 Temperature selector
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Depending on the system, the actual temperatures may vary from
the set value.
°C
= Cold. On this setting, the appliance is protected from
frost. The tap and the water line are not protected.
Eco = Recommended energy saving setting (approx. 60 °C),
minor scaling
82
= Highest selectable temperature
4.
Cleaning, care and maintenance
f Never use abrasive or corrosive cleaning agents. A damp
f
cloth is sufficient for cleaning the appliance.
f Check the taps regularly. Limescale deposits at the tap out-
f
lets can be removed using commercially available descaling
agents.
f Have the function of the safety assembly checked regularly by
f
a qualified contractor.
Almost every type of water will deposit limescale at high temper-
atures. This settles inside the appliance and affects both the per-
formance and service life. The heating elements should therefore
be descaled if necessary. A qualified contractor who is aware of
the local water quality will tell you when the next descaling is due.
5.
Troubleshooting
Fault
The appliance does
not supply hot water.
Water can only be
drawn at a reduced
rate.
Loud boiling noises
inside the appliance.
Water drips from the
safety valve of the
safety assembly after
heating has stopped.
1
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your request, provide the number from
the type plate (000000-0000-000000).
2
Nr.: ...... - .... - ......
Typ:
Cause
Remedy
The temperature se-
Switch the appliance ON by
lector is set to "°C".
turning the temperature se-
lector.
No power at the ap-
Check the plug / fuses in the
pliance.
fuse box.
The aerator in the tap
Descale / replace the aerator.
is scaled up.
The appliance is scaled
Have the appliance descaled by
up.
a qualified contractor.
The safety valve is
Switch the appliance off. De-
scaled up or dirty.
pressurise the appliance by
disconnecting it from the power
and water supply. Have the
safety valve checked by a quali-
fied contractor.
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