OPERATION
Appliance description
ENGLISH
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CAUTION Burns
If operating with preheated water, e.g. if using a solar
thermal system, observe the following information:
The DHW temperature may exceed the set temperature
or a set temperature limit.
f In this case, limit the temperature with an upstream
central thermostatic valve.
!
WARNING Injury
The appliance may be used by children over 3years of
age and persons with reduced physical, sensory or men-
tal capabilities or a lack of experience and expertise,
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. Cleaning and user maintenance must
not be carried out by children without supervision.
!
Material losses
The user should protect the appliance and its tap against
frost.
Note
In order to comply with protection rating IP25, coun-
tersunk screws must be used to secure the appliance to
the wall.
2.3 Test symbols
See type plate on the appliance.
3. Appliance description
The appliance switches on automatically as soon as you open the
hot water valve on the tap. When you close the tap, the appliance
switches off again automatically.
The appliance heats water as it flows through it. The set tempera-
ture is adjustable. Upwards of a certain flow rate, the control unit
selects the required heating output, subject to the temperature
selected and the cold water temperature.
The compact instantaneous water heater with full electronic con-
trol and automatic output matching maintains a consistent outlet
temperature. The fully electronic control unit with motorised valve
ensures the water is accurately heated to the selected tempera-
ture. This occurs regardless of the inlet temperature.
If the appliance is operated with preheated water and the inlet
temperature exceeds the selected temperature, the inlet tempera-
ture is indicated on the second display line and flashes. The water
is not heated further.
You can store different set temperatures and call them up quickly.
In the ECO function, the integral motorised valve limits the flow
rate to 3preset levels. The appliance has setting options for a
temperature limit (Tmax function, user) and internal anti-scald-
ing protection (qualified contractor). The backlight switches on
automatically as soon as water starts to flow through the appli-
ance or you make a change on the user interface. The backlight
switches off automatically after water stops flowing or if no action
is performed.
Heater
The bare wire heating system is enclosed within a pressure-tested
plastic jacket. The heating system with its stainless steel heater
spiral is suitable for hard and soft water areas and is largely in-
susceptible to scale build-up. The heating system ensures rapid
and efficient DHW provision.
Note
The appliance is equipped with an air detector that large-
ly prevents damage to the heating system. If, during op-
eration, air is drawn into the appliance, the appliance
shuts down heating output for one minute to protect the
heating system.
Following an interruption to the water supply
!
Material losses
To ensure that the bare wire heating system is not dam-
aged following an interruption to the water supply, the
appliance must be recommissioned by taking the follow-
ing steps.
f Disconnect the appliance from the power supply by
removing the fuses/tripping the MCBs.
f Vent the appliance and the cold water inlet line (see
chapter "Installation/ Commissioning/ Initial start-
up").
f Switch on the power supply again.
4. Settings and displays
4.1 User interface
D0000073619
2
3
1
8
5
6
7
4
1 Selector
2 Operating LED (flashes when output limit is reached)
3 Temperature memory keys
4 Backlit display
5 Main display | info display | parameter display
6 Segment display [10 - 100%]
7 Second display line
8 "i" button to call up information and select menus