Varmekabel: Hvordan beregne C-C avstand (+ avstand sluk og vegg) (Nexans)

Summary

This video provides a detailed explanation of how to calculate the correct spacing (CS distance) for heating cables, based on recommendations from Nexans' guidelines. It discusses how to determine the center-to-center distance between loops of the cable, with an example calculation using a 500-watt heating cable. The video also covers important factors to consider, such as adjusting for specific floor types and avoiding placement too close to drains. It emphasizes the need for proper spacing to ensure the cable functions effectively and avoids potential issues like unpleasant odors.

Takeaways

• 😀 CS distance refers to the center-to-center distance between loops in the heating cable.
• 😀 Always check the manufacturer's instructions to determine the correct recommendations and values for the heating cable you want to use.
• 😀 The formula for calculating CS distance involves multiplying the area in square meters by 100 to convert it to centimeters, then factoring in the length of the heating cable.
• 😀 For example, with a heating cable of 500 watts and a length of 29.2 meters, you can calculate the CS distance based on the area and cable length.
• 😀 Adjustments may be needed for factors like the presence of drains (sluk) and the type of flooring, which can affect the distance between loops.
• 😀 For instance, you might need to decrease the CS distance to 14 cm if the area near drains is considered, as proximity to drains can influence placement.
• 😀 Be prepared to adjust the cable layout during installation since achieving perfect distances on the first attempt is uncommon.
• 😀 When placing heating cables near drains, always maintain a minimum distance to avoid drying out the drain and causing unpleasant odors.
• 😀 The minimum recommended distance from the wall is 3 cm from the finished wall, but adjustments may be required based on the installation environment.
• 😀 Nexan's guidelines recommend maintaining at least 5 cm distance from drains, with possible increases up to 10 cm for certain floor types.
• 😀 It's crucial to consider these factors carefully during the installation process to ensure optimal performance of the heating system.

Q & A

What is the CS distance in relation to heating cables?

The CS distance refers to the center-to-center distance between loops of the heating cable. It is the distance measured between the loops of the cable, as illustrated in the script.

How do you calculate the CS distance for a heating cable?

To calculate the CS distance, you can use the formula: multiply the area (in square meters) by 100 to convert it into square centimeters, then divide by the length of the cable (in meters). This calculation gives the approximate CS distance.

What factors should be considered when adjusting the CS distance?

When adjusting the CS distance, factors such as the type of floor, the presence of drains (sluk), and the need for some space between the cable and the drain should be considered. These adjustments help to avoid potential issues like odors from drying drains.

What is the recommended distance from the heating cable to a drain?

The recommended minimum distance from the heating cable to a drain is typically 5 cm, but it can be increased to 10 cm, especially for buildings with specific types of floors, as mentioned in the Nexan manual.

How should the heating cable be placed in relation to a wall?

The heating cable should be placed at least 3 cm away from a finished wall, according to Nexan's recommendations. This distance may vary depending on whether the walls are fully finished or not.

Why is it important to maintain a proper distance from drains when laying heating cables?

Maintaining a proper distance from drains is important to prevent the heating cable from drying out the drain, which could result in unpleasant odors. Ensuring a small gap helps avoid these issues.

What are the potential issues with the CS distance if not properly calculated?

If the CS distance is not properly calculated, it may result in uneven heating, inefficient energy use, or even damage to the heating cable or surrounding materials. The placement must be adjusted for the most effective heating performance.

Can the CS distance be adjusted during the installation process?

Yes, the CS distance can be adjusted during the installation process. It's common to make small corrections as you lay the cable, especially since it's difficult to get the distance perfect on the first attempt.

How should you handle the calculation of CS distance if the wall is not yet finished?

If the wall is not yet finished, you should consider the intended final wall placement when calculating the CS distance, as this will affect how close the cable can be laid to the wall.

What is the role of Nexan’s guide in determining the heating cable installation?

Nexan’s guide provides essential recommendations and specifications for installing heating cables, including CS distance, minimum distances from drains and walls, and how to adjust for different types of floors to ensure effective and safe heating cable installation.