Mark Hall, Head of Mechanical Engineering and Devices at Fernox, explains why filters are so important in the effort to protect central heating systems – and how best to approach product selection.
The role of in-line system filters
When water in a central heating system and metal pipework come into contact, corrosion can occur. Eventually, corrosion will cause sludge and scale, which builds up, settling in radiators and blocking pipework. This will make the system far less efficient and the boiler (no matter how new), will have to work harder to heat the home. In a worst-case scenario, it can also lead to breakdown of the boiler or system.
This can be prevented by ensuring an in-line system filter is used, along with the correct chemical water treatments. The filter should be installed on the return to the boiler and will capture sludge and debris that has formed to prevent it from circulating around the system and causing damage.
When selecting a filter, look for products that make the installation and cleaning processes simple, quick and mess-free. As such, think about the following areas:
Ease of installation
Choose a filter that offers maximum installation flexibility. The Fernox TF1 Sigma Filter and TF1 Omega Filter are precision-engineered sealed filters designed for maximum reliability and longevity. They can be installed on both horizontal and vertical pipework and positioned at up to a 45° angle. This means they are ideal to install in small or restricted spaces.
Both filters are available with either high-quality valves or slip-socket connections, depending on your preference and the install.
Using the drain valve, both filters can also act as a convenient dosing point for the Fernox Express chemical range – making it easy to provide full protection of the system in less time, without the need for drain down.
The type of filtration
It is important to always check the type of filtration technology used, as this will have an impact on the amount of debris the filter is capable of capturing and containing. Always opt for filters that can remove both magnetic and non-magnetic debris, so you can be confident that they are as effective as possible.
Sealed technology – quick, mess-free cleaning
Opting for a sealed filter will ensure a cleaner, easier and quicker cleaning process, when compared to lidded alternatives. After switching the system off, simply open the drain valve and remove the magnet. This allows the water and dirt to drain out. Once the water runs clear the magnet can be replaced and the valve closed. The whole process takes less than two minutes.
Unlike lidded filters, there is also no risk of leaks and no parts to replace after each service to keep the filter watertight. This is because there is no ‘O’ ring which, on lidded filters, sits between the filter and the lid to ensure a tight seal.
The versatility, reliability and high-performance of sealed filters, such as the Fernox TF1 Sigma Filter and TF1 Omega Filter, makes it easy to protect central heating systems and maintain their efficiency.
The Fernox sealed filter range has market-leading warranties of 25 years and 5 years respectively for the brass nickel plated TF1 Omega Filter and composite polymer TF1 Sigma Filter – reinforcing confidence in the quality of manufacturing, build and design.
However, it is important to remember that filters are only ever part of the overall solution and chemical water treatment should always be used. Only when used together can they help professional installers to ‘clean, guard and protect.’
To find out more about Fernox and its range of filters and water treatment products visit www.fernox.com.