CLAGE DEX 12 E-Convenience Instant Water Heater Instruction Manual
- June 5, 2024
- CLAGE
Table of Contents
CLAGE DEX 12 E-Convenience Instant Water Heater
Safety instructions
Please read these instructions carefully before installing or using the appli-
ance! Keep the instructions handy with the appliance for future use!
Instruction manuals are intended for the specialist who is responsible for the
installation of the appliance. Operation manuals are for the end user. The
provided manuals correspond to the technical specifications of the appliance.
The latest version of the instructions can be found online at:
www.clage.com/downloads
- Do not use the appliance until it has been correctly installed and unless it is in perfect working order.
- 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.
- The appliance must be earthed at all times.
- Pay attention to the fact that water temperatures in excess of approx. 43 °C are perceived as hot, especially by children, 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.
- The appliance is only suitable for domestic use and similar applications inside closed rooms, and must only be used to heat incoming water from the mains supply.
- The appliance must never be exposed to frost.
- The values stated on the rating plate must be observed.
- In case of malfunction, disconnect the fuses immediately. In case of leaks, cut off the mains water supply instantly. Repairs must only be carried out by the customer service department or an authorised profes-sional.
- This appliance can be used by children aged 3 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or ins-truction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be performed by children without supervision.
- If the appliance is factory equipped with a connection cable, it must be replaced with an original spare cable from the manufacturer in case of damage by an authorised technician in order to avoid any hazards.
- In accordance with VDE 0700, a circuit breaker with a contact opening gap of at least 3 mm for each pole must be provided on the mains side of the connecting box for appliances with a fixed connection.
- The wall bracket must be secured with the supplied screws and dowels. The appliance must be secured to the wall bracket. The appliance may only be operated if it has been properly mounted on the wall bracket.
- The prescribed nominal pressure stated on the rating plate may not be exceeded at any time.
The required water resistance may not fall below the value stated on the rating plate at any time.
To observe additionally for pressureless installation:
- The water outlet behind the devices must not be blocked, and the water flow must not be restricted.
- The water outlet facilities, such as shower head, jet control and other outlet unit, must be decalcified regu-larly. Deposits must be removed in regular intervals.
- Only the fittings recommended by the manufacturer may be used.
- If the appliance is exclusive connected to a single shower, only the shower heads recommended by the manufacturer may be used. No other fittings or appliances which decrease the water flow to the shower may be installed.
Description of appliance
The instantaneous water heater DEX 12 is a electronically controlled,
pressure-resistant water heater for a decentralised water supply to one or
more tap connections.
Its electronic control regulates the power consumption depending on the
selected out-let temperature, the respective inlet temperature and the flow
rate, thus reaching the set temperature exactly to the degree and keeping it
constant in case of pressure fluc-tuations. The required outlet temperature
can be entered on a keypad within a range between 20 °C and 55 °C and can be
read off the digital display.
How to use
As soon as you open the hot water tap, the instantaneous water heater switches on auto matically. When the tap is closed, the appliance automatically switches off.
Temperature setting
You can set the required temperature gradually to a lower or higher value with the arrow keys and . The temperature changes by 1 °C if key is pressed shortly one time. Pressing a key for a longer time changes the temperature continuously. You can select the outlet temperature in a range from 20 °C to 55 °C.
Note: If temperature is set below 20 °C with arrow key the display shows “–“
and the appliance switches off the heating function.
Note: If the water heater supplies a shower, the maximum temperature was
reduced during initial operation. This limitation cannot be exceeded.
Programme buttons
The two programme buttons and allow to quickly select the preset temperature.
When pressing a programme key, the preset temperature is selected and
displayed. The factory setting for programme is 35 °C and for programme it is
48 °C. You can assign your own settings for the programme keys:
Prolonged pressing of the programme key stores the previously selected tem-
perature. The display changes from ”P1” or “P2“ to the newly stored
temperature value. This newly set temperature is now available to you each
time you press the corresponding program key.
Temperature limitation
The instantaneous water heater DEX is equipped with an optional temperature
limit-ing function. This scalding protection is deactivated in the factory
setting.
- Switch on: Select the limit tempe ra ture, then press and simul taneously for at least 3 sec. The dis play briefly confirms the activation by “HI“.
- Switch off: press program key and simultaneously for at least 3 sec. The dis-play briefly confirms the deactivation by “–“.
Note: By activation of the temperature limit also the programme keys are limited. Therefore, the fixed values of the programme keys may be set again after deacti-vation of the temperature limitation.
Reset to factory setting
All factory settings can be recalled:
Press and simultaneously. The display now counts backwards from “10“ to “00“
in second intervals. The appliance is reset at value “00“ – if you stop
pressing the keys earlier, you will cancel the process.
How to save energy
Set the exact temperature you need on the appliance and open the hot water
tap. Once you feel that the water is too hot, do not add any cold water and,
instead, enter a lower temperature on the appliance. If you were to add cold
water, the water already heated would cool down again and valuable energy
would be wasted. Moreover, the cold water added in the tap is not covered by
the control range of the electronic cir-cuitry, with the result that
temperature constancy is no longer guaranteed.
Power limit
If the full output of the instantaneous water heater DEX does not suffice to
heat the tapped quantity of water, this will be indicated by the LCD decimal
point (e.g. in winter time, when open ing several taps at once). When you
reduce the hot water flow rate, the LCD point stops indicating because the
output of the appliance is again sufficient to reach the set temperature.
Top-up heating
When operating with preheated water (e.g. with solar systems), you must ensure
that the inlet temperature does not exceed 70 °C.
If the inlet temperature exceeds the setpoint, the appliance is not providing
any out-put, the flashing decimal point of the digital display indicates that
the heating power is switched off.
Venting after maintenance work
This instantaneous water heater features an automatic air bubble protection to
pre-vent it from inadvertently running dry. Nevertheless, the appliance must
be vented before using it for the first time. Each time the appliance is
emptied (e.g. after work on the plumbing system, if there is a risk of frost
or following repair work), the appliance must be re-vented before it is used
again.
- Disconnect the instantaneous water heater from the mains (e.g. via deactivating the fuses).
- Unscrew the jet regulator on the outlet fitting and open the cold water tap valve to rinse out the water pipe and avoid contaminating the appliance or the jet regulator.
- Open and close the hot water tap until no more air emerges from the pipe and all air has been eliminated from the water heater.
- Only then should you re-connect the power supply again (e.g. via activating the fuses) to the instantaneous water heater and screw the jet regulator back in.
- The appliance activates the heater after approx. 10 seconds of continuous water flow.
Cleaning and maintenance
- Plastic surfaces and fittings should only be wiped with a damp cloth. Do not use abrasive or chlorine-based cleaning agents or solvents.
- For a good water supply, the outlet fittings (special tap aerators and shower heads) should be unscrewed and cleaned at regular intervals. Every three years, the electri-cal and plumbing components should be inspected by an authorised professional in order to ensure proper functioning and operational safety at all times.
Trouble-shooting and service
This instantaneous water heater was manufactured conscientiously and checked sever-al times before delivery. Should malfunctions nevertheless occur, it is usually only due to a bagatelle. First attempt to switch the house fuses off and on again in order to reset the electronics. Next, try to remedy the problem with reference to the following table. In doing so, you will avoid unnecessary expense of customer service assistance.
| Problem | Cause | Solution |
|---|
Water stays cold, digital display does not light up
| Master fuse tripped| Renew or activate fuse
Safety pressure cut- out tripped| Contact customer service
Water stays cold, digital display does light up| Safety thermal cut- out
tripped| Contact customer service
Display flashes error message “ Er “| Control system has switched off|
Switch fuse off and on. If “Er“ still flashes contact customer service
Flow rate of hot water too weak
| Outlet fitting dirty or calcified| Clean shower head, jet regulator or
sieves
Fine filter dirty or calcified| Let clean fine filter by customer service
Selected temperature is not reached, decimal point lights up| Water flow rate
too high| Reduce water flow rate at the tap
Selected temp. is not reached, decimal point does not light| Cold water has
been added via the tap| Tap hot water only; set temperature for use
Decimal point flashes
| Inlet temperature exceeding nominal temperature|
Reduce inlet temperature
No response upon keypress| Hood is not fitted properly| Let refit the hood properly by customer service
Repairs must only be carried out by authorised professionals.
If a fault in your appliance cannot be rectified with the aid of this table,
please contact the service organisa-tion of your importer or the Central
Customer Service Department. Please have the details of the typeplate at hand.
Phone: +966 11 4620146
Fax: +966 11 456 9089
Email: info@zamilco.com
www.zamilco.com