User Manual Q&AAnswer
Apr 12, 2025 - 04:12 AM
Before starting the installation, it is important to read through the installation instructions provided by the manufacturer. The installation should be carried out by qualified personnel who are familiar with the product and its operation. The installation should also comply with the manufacturer's instructions and the regulations of the authority having jurisdiction.
Here are the general guidelines for installing the Nexans TQXP XTREME-2R Resistance Cables:
1. Determine the appropriate cable output and output per meter based on the room size, type of installation, and floor type.
2. Measure the insulation resistance and heating element resistance before taking the cable out of the package. Record these values in the warranty form.
3. The heating cable should not be installed directly in contact with combustible materials, unless specific conditions are met (output per meter of 10 W/m or less, area power of 80 W/m² or less).
4. To prevent high temperatures in the floor construction, follow the restrictions on area output and linear output. For example, maximum 80 W/m² in wooden floors, maximum 160 W/m² in stone, tiles, vinyl, or linoleum.
5. Plan the installation and lay the cable in the precalculated C-C (center-to-center) distance on the subfloor. It is recommended to insulate the subfloor to reduce heat loss downwards, but the heating cable must not be in contact with the insulation.
6. Start by placing the splice(s) in the floor near the thermostat. The splice(s) should not be placed in a tube or in a wall. The endseal of a twin conductor cable should preferably be placed in a dry zone of the floor.
7. Use glue, bands, or cable ties to keep the heating cable in place at the correct C-C distance. Ensure that the cable stays in place when the floor is poured. Avoid overlapping or crossing of cables.
8. If attaching the heating cable to reinforcement bars, prefer longitudinal bars. The cable should not be attached to pipes or other components that prevent heat flow, maintaining a minimum distance of 3 cm.
9. Furniture standing on the heated area must have feet to ensure air circulation and heat emission from the floor.
10. Do not cut or shorten the heating cable in any way.
11. If a floor sensor is connected to the thermostat, install it inside a tube between two cable strings in the floor, close to the surface. Seal the end of the tube with tape.
12. Avoid stepping or dropping items on the cable during installation and pouring the floor.
13. Measure insulation resistance and element resistance after the cable is installed but before pouring concrete/screed/mortar.
14. When embedding the cable in concrete/screed/mortar, ensure a minimum thickness of 5 mm above the cable for tile or stone floor coverings, and 10 mm for vinyl, linoleum, carpet, engineered wood, or other coverings.
15. Compact the concrete/screed/mortar well to prevent air pockets and ensure good heat conductivity from the cable to its surroundings.
16. The heating cable should not be used before the concrete/screed/mortar has naturally hardened and dried, which can take up to 6-8 weeks.
17. Connect the heating cable to a thermostat according to the manufacturer's instructions. Measure insulation resistance and element resistance to check cable integrity before connecting. The cable must be properly connected to electrical earth and protected by a ground fault protection device.
18. It is recommended to use an electronic thermostat for temperature control, especially in wet rooms. The thermostat should have a floor sensor for accurate regulation.
Please note that this is a summary of the installation guidelines. For more detailed instructions and safety precautions, refer to the Nexans TQXP XTREME-2R Resistance Cables User Manual.
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