
CRX9
4. Operation instructions
Safety instructions for closed-outlet water heaters:
• Installation, initial operation and maintenance of this appliance must only be conducted by an authorised profes-
sional, who will then be responsible for adherence to applicable standards and installation regulations.We assume
no liability for any damages caused by failure to observe these instructions.
• Do not use the appliance until it has been correctly installed and unless it is in perfect working order.
• The appliance is only suitable for domestic use and similar applications inside closed, frost-free rooms, and must only
be used to heat incoming water from mains supply.
• The appliance must never be exposed to frost.
• The appliance must be earthed at all times.
• The maximum water pressure must not exceed the value on the label.
• Before commissioning for the first time and each time the appliance is emptied (e.g. due to work on the plumbing
system, if there is a risk of freezing or in case of maintenance), the appliance must be vented correctly in accordance
with the instructions in this manual.
• Do not remove the front cover under any circumstances before switching off the mains electrical supply to the unit.
• Never make technical modifications, either to the appliance itself or the electrical leads and water pipes.
• Pay attention to the fact that water temperatures in excess of approx. 43 °C are perceived as hot, especially by chil-
dren, and may cause a feeling of burning. Please note that the fittings and taps may be very hot when the appliance
has been in use for some time.
• Water inlet temperature must not exceed 30°C.
• In case of malfunction, disconnect the fuses immediately. In case of leaks, cut off the cold water supply instantly.
Repairs must only be carried out by the customer service department or an authorised professional.
• This appliance must not be used by any person (including children) with limited physical, sensorial or mental abilities
or failing experience and/or knowledge unless they are supervised by a person responsible for their safety or received
instructions about how to use the appliance.Children should be supervised in order to make sure that they do not
play with the appliance.
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Description of appliance
The appliance is a closed-outlet electronically controlled instantaneous heater for
decentral water heating at one or two taps situated in close proximity to one another,
e.g. wash basin or shower. Technical specifications →see page 3!
Use
The instantaneous water heater heats the water to the required temperature directly as
it streams through. The heater switches on automatically when the threshold flow rate
is exceeded. The „Power“ indicator (2) lights up when the heater is switched on.The
„Pressure“ indicator (3) lights up when the flow rate is too low.
The power is automatically adjusted by the electronics in line with the water flow rate
in order to obtain the set temperature and keep it virtually constant. The required tem-
perature can be set to within one degree between 35°C and 55°C via the two buttons
(5) and can be read off on the digital display (4).
If the full power of the instantaneous heater is not sufficient to heat the water to the
required temperature, this is indicated by the flashing „Power“ indicator (2). The tem-
perature can be restored by reducing the hot water flow rate at the tap.
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