CLAGE MCX 3..7 E-Mini Instant Water Heater Instruction Manual

Operating and installation instructions
E-mini instant water heater
MCX 3..7

Read these operating instructions carefully before installing and using the heater!
Note: Carefully read the enclosed safety instructions in full before the device is installed, put into service, and used, and follow them in the further steps and during use!

Overview

Description of appliance

This instantaneous water heater (fig. 1) is intended to provide economical heating of water sufficient for a single outlet i.e. kitchen sink or washbasin and can be installed with a sanitary water fitting.
When the hot-water tap is opened, the heater switches itself on automatically when the minimum water flow rate is exceeded and heats the water as it passes through the appliance.

The heater is pre-set in the factory to an outlet temperature of about 38 °C, which is ideal for washing your hands. When this temperature is reached, the electronic regulator reduces the power in order to ensure that the outlet temperature does not exceed this value. This automatic temperature regulation means that it is only necessary to open the hot water tap to obtain water at a constant, safe temperature for washing hands. On the control panel, the temperatures 35 °C, 38 °C, and 45 °C can be selected. Coldwater may be added if a lower temperature is required.

If the flow rate is too low, if the flow pressure is too low, or if the warm- water tap is closed, the appliance switches itself off automatically. For an optimum flow of water, always fit the special jet regulator enclosed with the appliance. This regulator is inserted into the thread on the end of the tap and fits into any standard sleeve size M 22/24.

The maximum possible outlet temperature is determined by the temperature of the incoming water, the rate of flow and the healing power of the heater (see diagram). The flow rate can be preset (“Adjusting the water flow”, 28).

Technical specifications

3,71/min
Maximum temperature 2,01/min
increase at rated power and 2,5 l/min
a flow rate of… 3,01/min
n
3,5 l/min
4,01/min| 25K| 31K| 41K| 43K| 46K
20 K| 25K| 33 K| 34K| 37 K
17K| 21K| 27K| 29K| 31 K
14K| 18K| 23K| 24K| 26K
12K| 16K| 20K| 21K| 23K
Required l/min to switch on 1/min| 1,2| 1,5| 1,5| 1,5| 1,5
Required l/min to switch off 1/min| 1,0| 1,3| 1,3| 1,3| 1,3
Min. required cable size 2) mm’| 1,5| 2,5| 4,0| 4,0| 2,5
Weight filled with water| ca. 1,5 kg
Dimensions (H x W x D)| 13,5 x 18,6 x 8,7 cm
Protection class acc. to VDE| 1
Type of protection according to VDE| IP 25

1. Temperature rise (Kelvin) + cold-water temperature = maximum hot-water temperature (°C) ≤ 70 °C
2. The cable size must not exceed 4 mm

Typical installations

The following must be observed

The heater is installed as shown in the immediate vicinity of the outlet in a frost-free room. We guarantee trouble-free operation only if CLAGE fittings and accessories are used. Note the following during installation:

• Installation must comply with DIN VDE 0100 and EN 806 and with the statutory regulations of the country and the provisions of the local electricity and water supply company.
• Check technical data and the information on the rating plate under the cover (“Removing the cover”, 27).
• Ensure that all accessories are removed from the packing materials.
• Easy access to the appliance shall be guaranteed at all times. An external shut-off valve has to be installed.
• Thoroughly rinse the water pipes before connection.
• Optimum operation is ensured at a water flow pressure of 0.2 to 0.4 MPa (2–4 bar). The appliance must not be subjected to a pressure exceeding 1 MPa (10 bar).
• For safe operation of this instantaneous water heater, a nonreturn valve is not required. If, nevertheless, a nonreturn valve has to be installed, it may only be placed in the hot water outlet line behind the instantaneous water heater.
• The water pipes must not exert any mechanical force on the water connections of the instantaneous water heater during installation and operation. If this cannot be guaranteed due to the installation conditions, we recommend the use of flexible connections.
• The minimum requirements for the required water resistance must be complied with. The required water-resistance of the can is obtained from your water supply company.

Shower application

The hot water temperature may not exceed 55 °C if the appliance is connected to a shower. If the appliance is operated with preheated water, it must be ensured that its temperature is also limited to 55 °C by the customer.

Flexible connecting hoses

Installation guidelines:

Ensure sufficient equipotential bonding.

• The permissible bending radius Rmin = 27 mm must be observed at all times, including during transport and assembly as well as when installed. If it is not possible to observe the minimum bending radius, a different installation method should be used or a suitable hose should be selected. Please refer to the table for the minimum length:

• For curved installation, there must be sufficient hose length available to form an open loop, as otherwise, the hose will become kinked at the joints and thus destroyed.
• The hose length may change slightly due to the effects of pressure or heat. For straight installation, allowance should therefore be made to compensate for changes in the hose length.
• Never twist or kink the flexible connection.
• Ensure that the hose is never stressed by external tensile or compressive forces during assembly or when in use.
• Rigid connections (external thread) should not be further tightened after attaching the second connection, as this causes twisting and may damage the hose.
• The hose installer is always responsible for ensuring a tight join.
• The installer should check any sealing material supplied with the hose to ensure that it is suitable, as the hose manufacturer does not know the connection material or geometry.

Installing the appliance

• Install the appliance with the water connectors vertically upwards for direct connection to the sanitary tap.
• Secure the wall bracket to the wall with screws and suitable wall plugs (fig. 5).
• Place the appliance on the wall bracket and snap it into position (fig. 6). The appliance may only be operated if it has been placed properly into the wall bracket!
• Tap connection (fig. 7): Cold water inlet (blue) and hot water outlet (red) are marked on the rating plate (under the rating plate cover).
• Connect the appropriate pipe or hose of the sanitary tap with the red-marked hot water outlet. Avoid exerting any kind of mechanical pressure on the appliance, e.g. by water pipes, etc.
• After installation, carefully check all connections for leaks and rectify as necessary.
• In order to obtain an optimum water jet at low flow rates, always insert the enclosed jet regulator into the sleeve of the tap outlet. This insert fits commercially available sleeves with an M 22 or M 24 thread.

Removing the appliance from the wall bracket
Put the wide screwdriver tip into the interlock between the water connections until it stops, then press slightly upwards (1), tilt the appliance forward by max. 15° (2) and remove it upwards (3).

Electrical connection

Only by a specialist! Fill the appliance completely with water by repeatedly opening and closing the hot water tap before connecting to electrical power. The heating element may be damaged if this is not done!

• Check that the power supply is switched off prior to the electrical connection.
• The MCX 3 (3.5 kW) may be provided with a power cable and a protective earth plug by the factory. Please make sure that the feed cable, which leads to the protective earth plug socket, is dimensioned sufficiently and that the socket is plugged into the conductor. The socket must be freely accessible. The power cable needs to be changed by the customer service department or an authorized electrician in case of a defect, to avoid any danger.
• The main cable of all other MCX models must be permanently connected via connecting box as shown in the circuit diagram (see fig. 9). The earth conductor must be connected.
• In accordance with IEC, a circuit breaker with a contact opening gap of at least 3 mm for each pole must be provided on the main site of the connecting box.
• The wiring cross-section must be well adapted to the corresponding power rating.
• To protect the appliance, a fuse element must be fitted with a tripping current commensurate with the nominal current of the appliance.

Purging

To prevent damage to the appliance, the instantaneous water heater must be purged of air before using it for the first time.
Each time it is emptied (for example after work on the plumbing system or following repair work on the appliance), the instantaneous water heater must be purged before it is used again.

1. Switch off the power supply to the instantaneous water heater.
2. To purge the instantaneous water heater, open the hot water tap and wait until the water emerges free of air bubbles.
3. Switch the power supply back on again.

Commissioning

Do not switch on the electric power at this time!

1. Open the hot-water tap and allow water to flow until it emerges free of air bubbles.
2. Now close the circuit breaker to connect the electrical supply. After a short power-up delay, the water heats up.
3. Set the desired outlet temperature and adjust the water flow rate, if, for example, the temperature cannot be reached.
4. Explain the functions of the heater to the user and ensure that he knows how to use it. Hand over these operating instructions to the user.
5. Use the registration card for the registration at the factory service center or register the appliance online on the website www.clage.com.

Rating plate cover

Removing the cover
The rating plate and the hood screw are located under this cover.

1. Push the cover at the corrugation towards the wall bracket.
2. Press the cover down at the rear corners until the front edge lifts.
3. Remove the cover by pulling forward.

Rating plate cover
On the inner part of the cover, you can find the name of the application type (1), as well as the serial number (2) and the article number (3).

Replacing the cover

1. Push the cover flat towards the wall bracket under the edges of the water connections.
2. Press down the front edge of the cover and push it forward again at the rear edge until it fits.

Adjusting the water flow

May only be carried out by a specialist.
Remove the cover (see Fig. 10), undo the hood screw underneath and remove the hood.
Decreasing the flow rate:
Turn the adjusting screw clockwise to decrease the flow rate, thus making a higher outlet temperature possible.
Increasing the flow rate:
Turn the adjusting screw counter-clockwise to increase the flow rate, thus reducing the possible outlet temperature.

How to use

Temperature setting
The touch key allows you to select one of the three preset temperatures.
Every keypress sets the temperature to the next level: 35 °C 38 °C 45 °C (max.)
Press the key once again starts the cycle all over.
The currently selected temperature is indicated by one of three colored LEDs.

Key lock and temperature lock
The currently selected temperature setting can be locked against unintended alteration. Thus, the temperature cannot be changed by a single key press anymore.
Activate keylock / Deactivate keylock:
Press and hold touch key for approx. 5 seconds until the active LED goes out, then release the touch key.

Deactivate / Activate LED-Standby

As the control panel’s energy-saving feature, the active LED turns off automatically about 20 seconds after the last operation (e.g. tapping or temperature selection).
To identify the selected setting at any time, the LED can be enabled permanently and the LED standby function will then be disabled with the following procedure:

• Close tap (water stop).
• Keep sensor key touched permanently for more than 7 seconds. Due to the keylock function, the LED always goes out after 5 seconds for about 1.5 seconds and lights up again.
• While still holding down the key, open the tap now, the LED will go out shortly as confirmation.
• Then release the touch key and close tap (water stop).

If the tap is opened or the touch key is used in LED standby mode (LED off), the last active LED lights up (wake up), but the temperature setting will not change yet. Only when pressed once again, the temperature setting will be adjusted.
The LED Standby function can be activated in the same way again.
This function is retained even after power failure.

Cleaning and Maintenance

• The appliance and the fittings should only be cleaned with a damp cloth. Do not use abrasive or chlorine-based cleaning agents or solvents.
• Keep the control panel area dry!
• Clean the jet regulator or the hand-shower regularly and replace as necessary.
• Dirt and scale deposited in the pipes and heater will affect the function of the heater.

Typical indications include a reduced rate of flow or noisy flow. In such cases, have the heater inspected by a technician and, if necessary, have the filter in the cold-water inlet cleaned.

Environment and Recycling

This product was manufactured climate neutrally according to Scope 1 + 2. We recommend the purchase of 100% green electricity to make the operation climate-neutral as well. Your product was manufactured from high-quality, reusable materials and components. Please respect in case of discarding that electrical devices should be disposed of separately from household waste at the end of their service life. Therefore, please take this device to a municipal collection point that returns used electronic devices to the recycling system. Disposing of it correctly will support environmental protection and will prevent any potential negative effects on human beings and the environment that could arise from inappropriate handling of these devices at the end of their service life. Please contact your local authority for further details of your nearest designated collection point or recycling site. Business customers: If you wish to discard equipment, please contact your dealer or supplier for further information.

Troubleshooting and Service

The following table will help you to determine and rectify the reasons for possible problems.

shut-off valve
Water flows more slowly than expected| The jet regulator is not fitted| Fit the special CLAGE jet regulator
Water pressure is not sufficient| Check the water flow pressure or let check the water flow adjustment by an authorized technician
Dirt in the pipes| Remove any dirt from the filter,
valves and taps / check the technical data
The heater switches itself on and off| Water pressure is varying, flow rate is too low| Remove any dirt / increase the flow water pressure, close other taps, open the shut-off valve further
Water remains cold| Water pressure is not sufficient| Let adjust the water flow by an authorized technician, open the shut-off valve, fit the special CLAGE jet regulator, check the water pressure
Dirt| Remove dirt from the inlet and outlet
Hot water temperature varies| Supply voltage varies| Check the supply voltage
Water connections mixed up| Check installation
Hot water temperature too low and one LED flashes slowly| Flow rate is too high or inlet temperature is too low| Adjust the flow either at the tap, the valve or have the flow adjusted by an authorized technician (“Adjusting the water flow”, 28).
One LED flashes rapidly and water remains cold| Defective temperature sensor| Replace temperature sensor (authorized technician)
---|---|---
Defective heating element| Replace heating element (authorized technician)
All LEDs flash rapidly and water gets warm| Defective control panel cable| Reposition control panel connector (authorized technician)
Replace control panel (authorized technician)
All LEDs flash rapidly and water remains cold| Defective power unit| Call customer service
LED turns off shortly after the keypress| Keylock is active| Deactivate keylock (“How to use”, 29)
LED flashes after the keypress| The touch key was not touched in center| Don’t touch the touch key for approx. 3 seconds (until LED lights up normally); for proper handling, touch the touch key right in the center
Touch key calibration active
No LED lights| LED Standby active| Check LED by touching the touch key.
If still no LED lights up, check the fuses!

If the connection cable is damaged, it must be replaced with an original spare cable from the manufacturer by an authorized technician in order to avoid any hazards.
If you cannot rectify the fault with the aid of the troubleshooting table, please contact customer service.
If you cannot rectify the fault with the aid of this table, please contact customer service.

CLAGE GmbH
After-Sales Service
Pirolweg 1 – 5
21337 Lüneburg
Germany
Phone: +49 4131 8901-40
Email: service@clage.de

We can either give you the name and address of an authorized customer service company or repair the heater ourselves. In the latter case, please send in the heater (at your cost and risk) with details of the problem and a copy of the sales invoice.

Product data sheet

Product data sheet in accordance with EU regulation
(a) Brand name or trademark, (b.1) Model, (b.2) Type, (c) Specified load profile, (d) Energy-efficiency class, (e) Energy-efficiency, (f) Annual power consumption, (g) Additional load profile, the appropriate energy-efficiency, and the annual power consumption, if applicable, (h) Temperature setting for the temperature controller, (i) Sound power level, internal. Additional notes:
All specific precautions for assembly, installation, maintenance, and use are described in the operating and installation instructions. All data in this product data-sheet are determined by applying the specifications of the relevant European directives. Differences to other product information listed elsewhere may result in indifferent test conditions. The power consumption was determined in compliance with standardized measurement method based on EU guidelines. The real energy consumption is pending on individual requirements.

CLAGE GmbH
Pirolweg 4
21337 Lüneburg
Deutschland
Telefon: +49 4131 8901-0
E-Mail: service@clage.de
Internet: www.clage.de

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