User Manual Q&AAnswer
Apr 08, 2025 - 11:11 AM
Before starting the installation, it is important to read through the installation instructions provided by the manufacturer. The installation should only be carried out by qualified personnel who are familiar with the product and its operation. Here are the general guidelines for installing the Nexans N-HEAT TQXP, XTREME TXLP Series heating cable:
1. Familiarize yourself with the product: The heating cable is available in different variations, including twin conductor and single conductor options. It is important to understand the specific product you are working with.
2. Follow regulations and manufacturer's instructions: The installation should comply with the manufacturer's instructions and the regulations set by the authority having jurisdiction. In the US, the installation should be in accordance with Article 424, Part IX of the National Electric Code, ANSI/NFPA 70.
3. Determine the application: The Nexans N-HEAT TQXP, XTREME TXLP Series heating cable is primarily used for underfloor heating, embedded in concrete or similar materials. It can also be used for frost protection, ice, and snow melting installations.
4. Measure insulation and element resistance: Before taking the cable out of the package, measure the insulation resistance and heating element resistance. Record these values in the warranty form provided.
5. Plan the installation: Before laying the cable, plan the installation by determining the precalculated C-C (center-to-center) distance on the subfloor. It is recommended to insulate the subfloor to reduce heat loss downwards, but ensure the cable is not in direct contact with the insulation.
6. Secure the cable in place: Use glue, bands, or cable ties to keep the heating cable in place at the correct C-C distance. Avoid overlapping or crossing of cables, as this can cause unwanted thermal effects. If attaching the cable to reinforcement bars, prefer longitudinal bars. Do not attach the cable to pipes or other components that may prevent heat flow.
7. Protect the cable during installation: Avoid stepping or dropping items on the cable and use caution when pouring the floor.
8. Measure insulation and element resistance again: After the cable has been installed but before pouring concrete/screed/mortar, measure the insulation resistance and element resistance again. This ensures the cable's integrity and reveals any damage during installation.
9. Pour the concrete/screed/mortar: Mix and apply the concrete/screed/mortar correctly as prescribed by the vendor. Ensure the cable is embedded with a minimum of 5mm (0.2 inches) of concrete/screed/mortar above it. The thickness may vary depending on the top floor covering material.
10. Compact the concrete/screed/mortar: Compact the material well to prevent air pockets and ensure good heat conductivity from the cable to its surroundings. Pay attention to the mixing and compacting process, especially if using thermally insulating types of concrete.
11. Wait for the floor to naturally harden and dry: 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. Follow the instructions provided by the vendor of the concrete/screed/mortar.
12. Connect the thermostat: It is recommended to use a thermostat to regulate the heating cables. Before connecting the thermostat, measure the insulation resistance and element resistance of the heating cable to check for cable integrity. Connect the heating cable to electrical earth properly and protect it with a ground fault protection device with a maximum trip value of 30mA.
13. Follow additional instructions: The installation process may vary depending on the specific product and application. Refer to the complete installation guide provided by Nexans for detailed instructions and any additional considerations.
Remember to fill in the warranty form provided with the product, documenting the installation details and measurements. This is necessary to ensure the warranty is valid.
Add New Comment