OPERATION
Appliance description
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3. Appliance description
The hydraulically controlled instantaneous water heater heats the
water as it flows through the appliance. The heating output starts
automatically as soon as a tap is opened and the starting flow rate
is exceeded (see chapter "Specification / Data table"). The water
volume and temperature can be adjusted at the tap.
You can choose between 2 output stages. Two further output stages
are hydraulically controlled in relation to the flow rate.
The flow rate controller compensates for pressure fluctuations,
thereby ensuring largely stable temperatures. The controller limits
the throughput, thereby ensuring an adequate increase in the
DHW temperature at all times.
Heating system
The bare wire heating system has a pressure-tested plastic cas-
ing. The heating system is suitable for hard and soft water areas
and is largely insusceptible to scale build-up. This heating system
ensures rapid and efficient DHW availability.
4. Settings
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1 Partial load
At low throughput 1/3 of the heating output is activated; at
higher throughput 2/3 of the available heating output is ena-
bled. This setting is suitable for hand washing at a basin, for
example.
2 Full load
At a low throughput, 1/2 of the heating output is applied; at
a higher throughput the full heating output is activated. This
setting is suitable for washing dishes, for example.
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Click the output selector into the required position.
Recommended settings when using a thermostatic valve
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Set the output selector to full power.
4.1 Recommended tap/valve settings
Note
If the outlet temperature is not sufficiently high at full
load and with the draw-off valve fully open, then more
water is flowing through the appliance than can be heat-
ed by the heating system (appliance is at its output limit).
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Reduce the water volume at the draw-off valve.
Low draw-off rate
= high outlet temperature
High draw-off rate = low outlet temperature
Twin lever tap
Output stage
Application range
Partial load
Washbasin
Full load
Bath, sink
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Add cold water if the temperature is too high when the tap is
fully open.
Mono lever mixer
Output stage
Application range
Full load
All
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Turn the tap lever to the highest temperature.
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Fully open the tap.
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Increase the outlet temperature by closing the tap slowly.
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Reduce the outlet temperature by adding cold water or open-
ing the tap further, if possible.
Following an interruption to the water supply
!
Material losses
Following an interruption of the water supply the appli-
ance must be recommissioned by carrying out the follow-
ing steps, in order to prevent the destruction of the bare
wire heating system.
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Disconnect the appliance from the power supply by
removing the fuses/tripping the MCBs.
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Open the tap for one minute until the appliance and
its upstream cold water inlet line are free of air.
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Switch the mains power back on again.
5. Cleaning, care and maintenance
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Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.
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Check the taps regularly. Limescale deposits at the tap out-
lets can be removed using commercially available descaling
agents.