Electric heating cabel Hornisse 5,5mm (40m)

Product detailed description

Electric underfloor heating cables are commonly used in residential and commercial buildings to provide even and efficient heating. These systems are typically installed beneath screed layers—either concrete or anhydrite—to ensure the cables remain hidden and protected. The cables operate at a fixed output of 15 W/m and are suitable for integration with various floor coverings, including tiles, panels, and carpets. The installation process involves careful planning to ensure the cables are evenly spaced and properly embedded, allowing for optimal heat transfer and long-term system performance.

Such systems are particularly well-suited for new builds and renovations where a discreet and energy-efficient heating solution is required. The cables are ideal for use in bathrooms, kitchens, living areas, and other rooms where a warm floor surface is beneficial. The system’s low maintenance and high durability make it a reliable choice for both primary and supplementary heating in well-insulated spaces.

Technical parameters

Code	HO HCABLE/15-600

The cable has a nominal output of 15 W/m and is designed to operate at 230V. The maximum conductor temperature is 45°C, and the minimum installation temperature is 5°C. The cable is constructed with two conductors and an earthing braid, with a 2.5 m power cable included. The insulation is made of LSZH (Low Smoke Zero Halogen) material, and the outer sheath is a combination of XLPE and PVC. These parameters are essential for determining the correct cable length and system configuration to meet the heating requirements of the space.

Installation and connection

Installation begins with preparing the subfloor and ensuring it is clean and level. The heating cable is then laid in a zig-zag pattern, maintaining a consistent spacing to ensure even heat distribution. The cable must be embedded in the screed layer, which acts as a thermal mass to retain and radiate heat. The maximum bend radius is 50 mm, and the cable should not be bent beyond this to avoid damage. After installation, the power cable is connected to the electrical supply, and the system is tested for continuity and insulation resistance. Common installation mistakes include incorrect cable spacing, failure to follow the minimum installation temperature, and improper embedding in the screed, which can affect performance and longevity.

Compatibility and accessories

This cable is compatible with standard electrical systems operating at 230V and is suitable for use with various floor coverings. For a complete system, it must be connected to a suitable thermostat and control unit to regulate the temperature. Additional accessories may include junction boxes, insulation boards, and expansion joints. Related products include the Electric heating cable Hornisse 5.5mm (15m), Electric heating cable Hornisse 5.5mm (25m), Electric heating cable Hornisse 5.5mm (60m), Electric heating cable Hornisse 5.5mm (80m), Electric heating cable Hornisse 5.5mm (100m), Electric heating cable Hornisse 5.5mm (120m).

Technical background for designers

The cable operates by converting electrical energy into heat through resistance in the conductors. The LSZH insulation ensures low smoke and no halogen emissions in case of fire, making it a safer option for indoor use. The XLPE and PVC outer sheath provides mechanical protection and resistance to environmental factors. The cable is designed to be embedded in a screed layer, which acts as a thermal mass to store and gradually release heat. The system’s efficiency is influenced by the thickness of the screed, the insulation of the room, and the accuracy of the cable spacing. Proper design and installation are crucial for achieving the desired thermal performance and system longevity.

Service and operation

Once installed, the system requires minimal maintenance. Regular checks should include verifying the continuity of the cable and the insulation resistance to ensure there are no faults. The system should be operated within the specified temperature range to avoid overheating and potential damage. No specific service intervals are required, but any signs of malfunction should be addressed promptly to prevent further issues. The system’s durability and low maintenance requirements make it a cost-effective solution for long-term use.

Frequently asked questions

Can the cable be used in a bathroom with a ceramic floor?
Yes, the cable is suitable for use in bathrooms and can be installed beneath a ceramic floor. The system is designed to work with various floor coverings and provides even heat distribution.

What is the maximum length of the cable that can be installed in one room?
The maximum length depends on the room size and heating requirements. The cable is available in different lengths, and the appropriate length should be selected based on the area to be heated.

Is it possible to install the cable in an existing building?
Yes, the cable can be installed in existing buildings during renovations. It is suitable for both new and retrofit applications, provided the subfloor is prepared correctly and the installation guidelines are followed.

How is the cable connected to the electrical supply?
The cable is connected to a 230V electrical supply using a 2-core cable with an earthing braid. The connection should be made by a qualified electrician to ensure safety and compliance with electrical regulations.

Documents for download

• Hornisse Products (PDF)
• Manual EN (PDF)