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COMPLIANT CONTROLS I


f you’re fitting a new gas fired combi boiler in England – currently not Wales, Scotland or Northern


Ireland - then Boiler Plus is important to you. You have to make sure your customer’s new boiler is fitted with time and temperature controls, as well as one or more energy efficiency measures from a list of four. The four options are load


compensation, weather compensation, a flue gas heat recovery device or a smart thermostat with automation and optimisation.


ESi’s ESRTP4RF and ESRTP5


Wifi controls are described as both being fully Boiler Plus compliant, offering a smart thermostat with Automation and Optimisation as standard. ESi Controls sales director for the


UK Tristan James says: “The main change with Boiler Plus is the need to fit at least one additional energy efficiency measure from the list of four options. You can select either the ESi ESRTP4RF or ESRTP5 Wifi and


MODERNISED IN MAIDSTONE W


hen an 18th-century residential farmhouse’s existing heating system could no longer


accommodate the high hot water demand required, TPS Heating specified Alpha’s FlowSmart with Climatic RF controller. After the previous boiler had broken


down, the historic farmhouse, located in Maidstone, needed a system that could heat 23 radiators and provide enough hot water for the two bathrooms in the property. Suitable for larger households, the Alpha FlowSmart is said to provide the energy efficiency expected from a combination boiler, with the ability to deliver large


volumes of hot water to a number of outlets simultaneously. Combining the Alpha InTec 40GS combi boiler with a built in GasSaver and thermal store technology, the FlowSmart pre-heats mains cold water within the GasSaver, by reclaimed boiler flue gases. It then passes through the thermal store’s stainless steel coil heat exchanger, where it is heated further by surrounding hot water from the central heating system. From this, the water will then pass through a blending valve, where it is controlled to an optimum 30ºC before entering the boiler. In effect, the mains water is pre-heated and the boiler’s workload is


significantly reduced. This allows the system to perform efficiently and reduce fuel use, while successfully improving the hot water flow rate. The Alpha Climatic RF controller was installed alongside the FlowSmart to maximise the system efficiency. Available in wired and wireless versions, it is a multi-channel time and temperature programmer with integrated thermostat and BUS system to transfer data between the boiler and the controller. The Alpha Climatic RF controls are also classed as an enhanced load compensator, reportedly enabling this install to be completely Boiler Plus compliant.


www.heatingandventilating.net February 2019 26


you’ve nailed compliancy.” ESi Controls is also currently working hard to bring its Load Compensation control range to the market place, which will add an additional feather to its cap.


hottopic J


CLEAN AIR – A BURNING ISSUE


ohn Thompson, CEO of the Association of Plumbing & Heating Contractors (APHC), looks at how the government’s Clean Air Strategy affects wood burning stoves and open fires. The government has widened its focus on


environmental pollutants with the publication of its Clean Air Strategy which focuses on reducing pollutants in agriculture and wood burning stoves in addition to their commitment to end the sale of conventional new diesel and petrol cars and vans from 2040. The strategy document, which was published on


January 14, sets out how England will reduce the prevalence of harmful air pollutants by partly focusing on domestic burning on stoves and open fires which the government states are now the single biggest source of particulate matter emissions. The World Health Organisation states that particulate matter is harmful to health as it claims it can penetrate deep into your lungs, pass into your bloodstream and get embedded in your bodily organs and your brain. The government has highlighted that a wood burning stove emits more particles per hour than a diesel truck which is a major concern for them as about 1.5 million households burn wood on open fires and stoves across the UK. A freshly cut log of wood contains about a pint of water, which means most of the heat is used to dry the water out which causes the wood to smoke and smoulder which releases air pollutants. The key impact of the strategy on existing stove owners will be on the use of fuels like wet wood, and traditional house coal, which are likely to be phased out. The strategy also details that all new stoves sold from 2022 must


comply with EU Ecodesign regulations, which many of the stoves on sale today already comply with. These stoves allow combustion higher up in the fire chamber so that they re-ignite any particles of wood that are in the smoke so the emissions that come out the chimney are reduced by 80% compared to older non-compliant stoves. The government also plans to give local authorities more powers over existing smoke control areas, where only the burning of smokeless fuel is permitted. The document also suggests that the government is looking to help local authorities "increase the rate of upgrades for inefficient and polluting heating devices". Time will tell what effect these regulations will have on the sales of wood burning stoves, which have experienced significant growth over the past five years. I believe there is a case for a wider overarching governmental strategy


to incorporate the work the government is implementing to improve air quality and the work they are undertaking to tackle climate change in order to achieve a sustainable energy strategy for properties, including those properties which are not connected to the gas network and rely upon the burning of other fuels such as oil. The government will shortly bring forward an Environment (Principles and Governance) Bill which will include primary legislation on air quality, last updated in the Clean Air Act of 1993.


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