Stiebel Eltron DCE-X Premium Compact Instant Water Heater (Model 238158) User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation of your Stiebel Eltron DCE-X Premium Compact Instant Water Heater. Please read these instructions thoroughly before installation, use, or maintenance to ensure proper function and to prevent injury or damage.

Product Features:

• Fully electronic compact instantaneous water heater with 4i technology.
• Maximum energy efficiency and accurate temperature delivery due to fully electronic closed-loop control.
• Easy operation via a large, backlit multifunction display.
• Energy-efficient ECO mode.
• High-grade design suitable for various installations.

Figure 1: Front view of the Stiebel Eltron DCE-X Premium Instant Water Heater, showing the LC-Display and control knob.

2. Important Safety Instructions

Failure to follow these safety instructions may result in electric shock, fire, property damage, or personal injury. Keep this manual for future reference.

• Qualified Personnel: Installation, maintenance, and repair must only be performed by a qualified electrician and plumber in accordance with local regulations and standards.
• Electrical Connection: Ensure the electrical supply matches the specifications of the appliance (220-240V, 6/8 kW). A dedicated circuit with appropriate wiring (e.g., 6 to 10mm² wire depending on distance) and circuit breaker is required. Do not plug into an ordinary socket.
• Water Connection: Connect the appliance to the cold water supply. Ensure all connections are watertight.
• Temperature Settings: Be aware of the potential for scalding. Set the temperature carefully, especially when children or individuals with reduced physical, sensory, or mental capabilities are present.
• Frost Protection: The appliance is not frost-protected. Do not install in locations where freezing temperatures may occur.
• Cleaning: Disconnect the power supply before cleaning the appliance. Use only mild cleaning agents.
• Modifications: Do not modify the appliance in any way. Unauthorized modifications can lead to hazards and void the warranty.

3. Installation and Initial Setup

The Stiebel Eltron DCE-X Premium is designed for compact installation, suitable for kitchen sinks, washbasins, and showers. Professional installation is highly recommended to ensure safety and compliance.

3.1 Mounting Location:

• Choose a vertical wall surface that can support the weight of the unit when filled with water.
• Ensure adequate clearance around the unit for ventilation and maintenance.
• Avoid locations exposed to direct sunlight or freezing temperatures.

Figure 2: Example installation of the water heater in a bathroom setting, demonstrating its compact design.

3.2 Water Connections:

• Connect the cold water inlet to the designated connection point on the appliance.
• Connect the hot water outlet to the tap or shower.
• Use appropriate fittings and ensure all connections are sealed to prevent leaks.
• Flush the pipes thoroughly before connecting to the appliance to remove any debris.

Figure 3: Bottom view of the water heater, illustrating the water inlet and outlet connections.

3.3 Electrical Connection:

• This appliance requires a dedicated electrical circuit. Consult a qualified electrician for proper wiring.
• Ensure the power supply is switched off at the main breaker before making any electrical connections.
• Connect the appliance to the appropriate voltage (220-240V) and ensure the wiring gauge is sufficient for the 6/8 kW power rating.

3.4 Initial Start-up:

• Before switching on the power, open the hot water tap to allow the appliance to fill completely with water and purge any air from the system.
• Once water flows steadily from the tap, close the tap and switch on the electrical power supply to the unit.
• The display will illuminate, and the unit will be ready for operation.

4. Operating Instructions

The DCE-X Premium features an intuitive LC-Display and 4i technology for precise temperature control.

4.1 Setting the Temperature:

• Use the rotary knob on the front panel to adjust the desired water temperature. The set temperature will be shown on the LC-Display.
• The 4i technology ensures accurate temperature delivery even with fluctuating inlet temperatures or flow rates.

4.2 Memory Keys:

• The appliance features two memory keys (1 and 2) to store frequently used temperature settings.
• To save a temperature: Set the desired temperature, then press and hold one of the memory keys until the display confirms the setting is saved.
• To recall a temperature: Briefly press the corresponding memory key.

4.3 ECO Mode:

• Activate ECO mode for enhanced energy efficiency. Refer to the display for ECO mode indication.
• In ECO mode, the appliance optimizes heating to reduce energy consumption while maintaining comfortable water temperatures.

4.4 Display Information:

The illuminated multifunction display provides real-time information:

• Set water temperature.
• Current power consumption.
• Energy consumption.
• Flow rate.
• Time (if configured).
• Status and service indicators.

Figure 4: Diagram illustrating typical maximum flow rates at 38°C for 6/8 kW models in summer and winter conditions, demonstrating temperature increase from incoming water.

5. Maintenance and Care

Regular maintenance ensures the longevity and efficient operation of your water heater.

5.1 Cleaning the Exterior:

• Before cleaning, disconnect the appliance from the power supply.
• Wipe the exterior casing with a soft, damp cloth. Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the surface.
• Ensure no water enters the internal components.

5.2 Descaling:

• In areas with hard water, limescale can build up inside the appliance, affecting performance.
• Descaling should only be performed by a qualified technician. Do not attempt to descale the unit yourself, as this can damage internal components and void the warranty.
• The frequency of descaling depends on local water hardness and usage.

5.3 Regular Checks:

• Periodically check for any signs of leaks around the water connections.
• Ensure the ventilation openings are not obstructed.
• If you notice any unusual noises, smells, or performance issues, contact a qualified service technician.

6. Troubleshooting

Before contacting customer support, please refer to the following table for common issues and their potential solutions.

7. Technical Specifications

Key technical data for the Stiebel Eltron DCE-X Premium Compact Instant Water Heater (Model 238158).

Figure 5: Product fiche detailing technical specifications and energy efficiency information. For more details, visit the EPREL database.

8. Warranty and Customer Support

For warranty information, service requests, or technical assistance, please contact Stiebel Eltron customer support.

• Manufacturer Website: www.stiebel-eltron.com
• Email Support: info-center@stiebel-eltron.de
• Telephone: 05531702110
• Address: Dr.-Stiebel-Straße 33, 37603 Holzminden, Germany

Please retain your proof of purchase for warranty claims. Warranty terms and conditions may vary by region.