Electric heating cabel Hornisse 3,6mm (83,3m)

Product detailed description

Electric heating cables embedded in screed are commonly used in underfloor heating applications in both residential and commercial environments. These systems provide uniform thermal comfort by eliminating cold spots and ensuring consistent warmth across the floor surface. Installers typically work with dry screeds or cementitious layers, placing the cables according to design specifications before applying the final floor covering. This method allows for discreet integration while maintaining accessibility during installation and commissioning.

Such systems are particularly effective in rooms requiring supplemental heating, such as kitchens, bathrooms, or near windows and balcony doors. In larger commercial spaces like offices or service areas, these cables can cover extensive areas efficiently. The installation process requires careful planning to ensure even spacing and correct wattage per square meter, especially when working with uneven room shapes or multiple zones.

Technical parameters

Installation and connection

The installation begins with preparing a flat and clean screed surface of at least 3.6 mm thickness. The cable is laid in parallel lines using spacing guides to maintain even coverage. Once positioned, the cable should be covered with a thin layer of non-conductive adhesive or self-leveling compound before applying the final floor material. The power supply is connected via a two-core cable with an earth braid, with a standard lead length of 2.5 m. Before energizing, verify that all connections are secure, the insulation resistance is intact, and the cable is not damaged during placement. Common errors include incorrect spacing, overlapping, or failure to account for the minimum bending radius of 50 mm.

Compatibility and accessories

This cable is compatible with thermostats rated for 230 V and designed for underfloor heating systems. For larger rooms or multi-zone setups, additional lengths of the Hornisse 3.6 mm series may be required. Related products include the Hornisse 3.6 mm (15m), Hornisse 3.6 mm (22.2m), Hornisse 3.6 mm (37.8m), Hornisse 3.6 mm (44.4m), Hornisse 3.6 mm (61.1m), and Hornisse 3.6 mm (67.8m) variants. Thermostats and temperature sensors should also be selected based on the room size and system wattage to ensure optimal performance.

Technical background for designers

The cable operates by converting electrical energy into heat through resistive heating. The fluoropolymer insulation provides high dielectric strength and resistance to moisture, while the PVC outer sheath offers mechanical protection. When integrated into a system, the cable’s output should be balanced with the thermal mass of the floor covering and the ambient conditions of the space. Designers should consider the minimum and maximum operating temperatures, as well as the recommended wattage per square meter, to avoid overheating or underperformance. Proper zoning and thermostat placement are essential for maintaining even heat distribution and energy efficiency over time.

Service and operation

No regular maintenance is required for this type of heating cable during normal operation. However, it is advisable to periodically check the insulation resistance and ensure that the thermostat and control unit are functioning correctly. Any visible damage to the outer sheath or irregularities in heat output should be investigated immediately. If a fault occurs, the entire circuit should be isolated, and the cable tested for continuity and insulation breakdown before any further action is taken.

Frequently asked questions

Can the cable be cut to custom lengths?
Yes, the cable can be cut to the desired length provided the cut is made between specified zones. Always use a dedicated cutting tool and ensure the ends are properly sealed after cutting.

Is the cable suitable for installation beneath ceramic tiles?
Yes, the cable is ideal for installation beneath ceramic tiles, stone, or wood paneling. It is designed to operate efficiently with low thermal inertia materials that allow rapid heat transfer.

What is the maximum allowable bend radius during installation?
The cable must not be bent tighter than a 50 mm radius. Exceeding this could cause internal stress and compromise the insulation or conductor.

Can multiple cables be connected in parallel for larger areas?
Multiple cables can be connected in parallel as long as the total load does not exceed the capacity of the power supply and thermostat. Ensure all connections are properly insulated and secured.

Documents for download

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