1. Introduction
Thank you for choosing the CLAGE CEX-U Electronic Instantaneous Water Heater. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your appliance. Please read these instructions carefully before installation and use, and keep them for future reference.
The CLAGE CEX-U is an electronically controlled instantaneous water heater designed for under-sink mounting in kitchens, providing hot water precisely when needed. Its compact design and accurate temperature selection ensure comfort and efficiency.
2. Safety Instructions
Important: Failure to follow these safety instructions may result in electric shock, fire, or personal injury.
- Professional Installation Required: The installation of this non-plug-in device must be carried out by a qualified electrician or a registered specialist in accordance with local regulations and wiring rules.
- Electrical Connection: Ensure the electrical supply matches the specifications of the appliance (400 V, 11-13.5 kW). The device must be properly grounded.
- Water Connection: All water connections must be performed by a qualified plumber. Ensure all connections are watertight to prevent leaks.
- Operating Temperature: The water heater delivers hot water up to 60°C. Exercise caution to prevent scalding, especially with children or individuals with reduced physical, sensory, or mental capabilities.
- Maintenance: Disconnect the power supply before performing any maintenance or cleaning.
- Damage: Do not operate the appliance if it is damaged. Contact a qualified technician for repair.
3. Product Overview
The CLAGE CEX-U is an advanced electronic instantaneous water heater designed for efficient hot water supply.
Key Features:
- Electronically regulated for precise temperature control.
- Pressure-resistant design, compatible with both pressure-resistant and pressure-free fittings.
- Compact dimensions for easy under-sink installation.
- Sensor button control panel with LED display for accurate temperature input between 20°C and 60°C.
- Suitable for reheating pre-heated water, such as from a solar system.
- Smart Control via Smartphone App (Special Feature).
Figure 1: Front view of the CLAGE CEX-U Electronic Instantaneous Water Heater, showing the LED display and sensor control buttons.
4. Setup and Installation
Installation of the CLAGE CEX-U must be performed by a qualified professional. This section provides general guidance.
4.1 Mounting Location
The unit is designed for under-sink mounting. Ensure there is sufficient space for the appliance and its connections. The compact dimensions (approximately 31 x 31 x 11 cm) allow for installation under most kitchen sinks.
Figure 2: The CLAGE CEX-U installed under a kitchen sink, illustrating its compact size (approx. 29.4 cm height, 17.7 cm width, 10.4 cm depth) and external 10 cm water connections. The image also indicates "Made in Germany".
4.2 Electrical Connection (400 V)
The appliance requires a 400 V, 3-phase electrical supply. The power setting (11 kW or 13.5 kW) is adjustable during installation. A power cable (approx. 65 cm) for a 3-phase cooker connection box is included. This connection must be made by a qualified electrician.
4.3 Water Connection
The CLAGE CEX-U is suitable for both pressure-resistant and pressure-free fittings. The external water connections are designed for easy installation.
Figure 3: Installation diagram showing two configurations for the CLAGE CEX-U with a 400 V power supply. The left diagram illustrates standard installation with a pressure-free fitting. The right diagram shows installation with a pressure-resistant fitting, including a T-piece and pressure hose (supplied). Both diagrams emphasize professional installation.
Figure 4: The CLAGE CEX-U installed discreetly under a kitchen sink, demonstrating its space-saving design. The image highlights features such as desired temperature setting via sensor buttons, no mixing with cold water, a large LED display, instant hot water without waiting, and an optional remote control.
5. Operating Instructions
The CLAGE CEX-U features an intuitive sensor button control panel with an LED display.
5.1 Temperature Selection
- Ensure the appliance is powered on.
- Use the + and - sensor buttons on the control panel to adjust the desired water temperature. The LED display will show the selected temperature.
- The temperature can be set accurately between 20°C and 60°C.
- Once the desired temperature is set, open the hot water tap. The unit will instantly heat the water to the selected temperature.
5.2 Smart Control (Optional)
If your model includes the Smart Control feature, you can manage settings via a smartphone application. Refer to the separate Smart Control manual or app instructions for detailed usage.
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of your water heater. Always disconnect the power supply before performing any maintenance.
6.1 Cleaning the Exterior
- Wipe the exterior casing with a soft, damp cloth.
- Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the surface.
6.2 Descaling
In areas with hard water, limescale can build up inside the appliance, affecting performance. Descaling should be performed by a qualified technician. The frequency depends on water hardness and usage.
6.3 General Inspection
Periodically check for any signs of leaks or unusual noises. If any issues are detected, contact a qualified service technician immediately.
7. Troubleshooting
Before contacting customer service, please check the following common issues:
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water | No power supply; Water supply off; Appliance fault. | Check circuit breaker; Ensure water valve is open; Contact service technician. |
| Water not hot enough | Temperature setting too low; High flow rate; Limescale buildup. | Increase temperature setting; Reduce water flow; Contact technician for descaling. |
| Water is too hot | Temperature setting too high. | Decrease temperature setting. |
| Leakage | Loose connections; Damaged seals. | Immediately turn off water supply and power; Contact a qualified plumber. |
For issues not listed here or if solutions do not resolve the problem, please contact CLAGE customer support or a qualified service technician.
8. Specifications
Detailed technical specifications for the CLAGE CEX-U Electronic Instantaneous Water Heater.
| Feature | Detail |
|---|---|
| Brand | CLAGE |
| Model Number | 2400-26413 |
| Color | White |
| Product Dimensions (L x W x H) | 31 x 31 x 11 cm |
| Item Weight | 3.18 Kilograms |
| Power / Wattage | 11-13.5 kW (adjustable), 13500 watts (max) |
| Power Source | Electric (400 V) |
| Material | Plastic |
| Energy Efficiency Class | A+ to F |
| Special Features | Smart Control via Smartphone App |
| Maximum Flow Rate | 13.5 Liters Per Minute |
| Maximum Temperature | 60 Degrees Celsius |
9. Warranty and Support
For warranty information, technical support, or service requests, please refer to the warranty card included with your product or visit the official CLAGE website. Ensure you have your model number (CEX-U, 2400-26413) and purchase date available when contacting support.
