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HEATING, VENTILATION & SERVICES
The arrival of the low temperature heating system has brought with it questions that architects, building designers, specifiers and installers want answers to
a major role to play as the heating system horizon changes to accept these renewable options over the next few years. The radiator industry has developed a wider range of designs and sizes; this has helped to provide the larger radiators needed by the renewable heating options, but also vertical radiators for wall areas with a much reduced horizontal footprint.
Upgraded Building Regulations The arrival of the new upgrade to Building Regulations with effect from June 2022 in England (and from November in Wales) brings with it a realisation that the key figure to bear in mind is 55°C – the new maximum flow temperature for all new wet heating systems. The regulations also say that heating appliances and radiators should not be oversized. TRVs need to be fitted to every radiator except where there is a room thermostat fitted. The differential between the flow and return should be 10°C – giving a 45°C return, and a mean water temperature of 50°C. This will have an impact on radiators but simply means that sizing of radiators is more important than ever, and all the advice you could need is available through relevant websites to point installers and specifiers in the right direction with regard to using the right radiators in the right applications. So do we need to ditch radiators altogether and look for alternatives as some are suggesting? The answer is a resounding ‘no.’
Radiators are very much ‘fit for the
future,’ but as always, correct sizing will need to be undertaken to ensure that they work effectively. But can radiators work well with air source heat pumps? Absolutely – and the evidence is there, in a host of installations across the UK.
Chris Harvey is head of marketing at Stelrad Radiators
WWW.ARCHITECTSDATAFILE.CO.UK ADF JANUARY 2023
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