44 HEATING & RENEWABLE ENERGY
best practice, the use of filtration technology alongside chemical water treatment is also included within the supplementary information of the Domestic Heating Guide, which states: “a filter can also be fitted to the central heating circuit to help maintain the efficiency and reliability of the system.” Capturing circulating debris and containing it for safe removal, an in-line filter offers on-going protection of the boiler against damage from dirty system water.
Selecting a filter that collects both magnetic and non-magnetic debris is essential. It is recommended to look for filters that offer dual protection capability by combining hydrocyclonic action or hydronic particle separation (HPS) technology, to capture copper, zinc or aluminium corrosion, with a powerful Neodymium magnet to trap iron oxide contaminants.
Leading manufacturers provide a range of filters of various sizes to allow for installation in small or confined spaces. Also, for different aesthetic finishes, developers should look to ranges that incorporate both plastic and brass nickel-plated solutions to provide the ultimate choice and flexibility. Available with easy to maintain warranties, a filter
body parts warranty can often extend to 25 years.
In addition to providing an energy efficient and reliable heating system, the use of an in-line filter ensures that on-going servicing or maintenance of the system is quick and easy. This allows chemical water treatments to be dosed via the filter in as little as 30 seconds and a full powerflush clean to be achieved via the unit. In-line filter technology offers lasting benefits to any potential householder.
For housebuilders and developers, adding value to essential amenities such as the central heating system is of significant importance. By incorporating an in-line filter, a ‘belt and braces’ approach to protecting the boiler can be offered. This provides peace of mind and confidence that the system will maintain its efficiency throughout its lifespan, and not suffer early failure due to circulating contaminants.
Sam Hayes is filter project engineer at Fernox
WWW.HBDONLINE.CO.UK
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