Electric heating cabel Hornisse 5,5mm (100m)

Product detailed description

Electric heating cables installed under screed are a standard solution for floor heating systems in new builds and renovations. These cables are embedded in a concrete or anhydrite screed layer, ensuring even heat distribution and long-term thermal stability. They are compatible with various floor coverings, including tiles, panels and carpets, and are commonly used in bathrooms, kitchens, living rooms and other areas requiring floor heating. The cables are fully concealed, preserving the interior design and offering long-term durability with minimal maintenance.

For installers, the Hornisse 5.5mm heating cable is designed for use in well-insulated rooms where either primary or supplementary heating is required. The system relies on the screed acting as a thermal mass, storing heat and releasing it gradually after the system is switched off. This makes it ideal for spaces with high thermal inertia and where a steady, even heat output is desired. The cable must be installed in accordance with the manufacturer’s specifications, ensuring correct spacing and secure fixing to prevent damage during screed pouring.

Technical parameters

Installation and connection

Installation involves laying the cable in a straight, parallel pattern within the screed layer. The minimum bend radius is 50 mm, and the cable must be fixed using clips or lattices to maintain even spacing. The supply cable is a two-core plus earth cable with a length of 2.5 m. Connectors and terminals must be rated for the system’s maximum current and voltage. A common mistake is incorrect spacing or overlapping of cables, which can lead to uneven heating or overheating in specific areas. Always verify the cable length and wattage before cutting or trimming.

Compatibility and accessories

This cable is compatible with standard floor heating control systems that support 230V operation. It requires a thermostat and a suitable circuit breaker for electrical safety. Additional components such as temperature sensors and floor mats may be necessary for precise control and zoning. Related products include shorter variants of the same model, such as the 15m, 25m, 40m, 60m, 80m, 120m and 180m versions. These can be used to customise the heating system to specific room dimensions and heating requirements.

Technical background for designers

The Hornisse 5.5mm heating cable operates by converting electrical energy into heat through resistance. The core is insulated with LSZH (Low Smoke Zero Halogen) material, which reduces emissions in case of fire. The outer sheath is made of XLPE and PVC, providing mechanical protection and flexibility. The cable is designed to be embedded in a screed layer, which acts as a thermal mass, storing and gradually releasing heat. The system’s efficiency is influenced by the thickness of the screed, the insulation beneath the floor and the ambient temperature of the room. Proper design ensures even heat distribution and avoids hotspots or cold areas.

Service and operation

Once installed, the system requires minimal maintenance. Regular checks should include verifying the thermostat settings, ensuring the control system is functioning correctly and confirming that the cable is not damaged. No scheduled service intervals are specified in the technical documentation. If the system fails to heat properly, check for electrical faults, incorrect thermostat settings or damaged insulation. The cable is designed for long-term use and is not intended for frequent disassembly or adjustment after installation.

Frequently asked questions

Can the Hornisse 5.5mm cable be used with a programmable thermostat?
Yes, the cable is compatible with standard programmable thermostats that operate at 230V. Ensure the thermostat is rated for the system’s current draw and is installed in a location that accurately reflects the room’s temperature.

Is it possible to cut the cable to a custom length?
No, the cable must be used in its full length as supplied.

Can the cable be installed in a room with a suspended floor?
No, the cable is designed for installation under a solid screed layer. It is not suitable for suspended floors or raised access floors, as it requires direct contact with the screed to function correctly.

What is the maximum temperature the cable can reach during operation?
The maximum wire temperature is 45°C. This is the highest temperature the cable will reach under normal operating conditions. Exceeding this temperature may indicate an issue with the control system or insulation.

Documents for download

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