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[ Spotlight: Heating and ventilation]

Case study: Village green

A revolutionary heating system that protects vulnerable residents is to be installed in a flagship eco-village development in Greater Manchester. City West Housing Trust’s £14.3m Barton Village

Ground source heat pump installation training

Part F of the Building Regulations (Ventilation) exists to ensure there is adequate ventilation for people in buildings. It includes legal requirements for the inspection and commissioning of ventilation systems, and also the provision of operation and maintenance information to users and occupiers.

New and improved The 2010 revisions to Part F and Part L saw a variety of updates to help the government achieve its target for zero carbon homes by 2016. Part L is now divided into four sections. Approved Document L1A focuses on new dwellings, while L1B covers work carried out in existing dwellings. Approved Documents L2A and L2B address new buildings and existing buildings other than dwellings, respectively. Part L1A covers the various types of electrical heating

installations for dwellings to meet the new energy efficiency requirements. Part L2A covers the installation of combined heating and power (CHP) systems and also heat pumps, as well as the standard heating and water heating systems. Despite these revisions, Chris Stammers, marketing

director for trade and independents at Dimplex, believes more should be done. He states: ‘Part L has had a fundamental impact on the industry by driving up energy efficiency levels. It does – up to a point – tackle energy efficiency in buildings, in that new build is being addressed; however, the government really needs to tackle retrofit issues, such as levels of insulation.’ If Part F and Part L are really to have the desired

impact there needs to be greater enforcement. David Frise, head of sustainability at the Heating and Ventilating Contractors’ Association (HVCA), comments: ‘While great

scheme in Eccles will become one of the first developments in the UK to use EcoPod technology, following a partnership between the Trust and Belfry Group. The EcoPod Heating System is designed to alleviate fuel

The Renewable Heat Incentive offers a potentially lucrative area for electrical contractors

poverty in high-rise tower blocks. As well as reducing fuel costs and carbon emissions by more than 40 per cent, it also features an innovative building management system (BMS), which automatically alerts landlords when ‘at risk’ tenants fail to adequately heat their properties. Colette McKune, director of asset management at City

West Housing Trust, comments: ‘In the past we have had fuel poverty issues in our blocks, so we knew we had to develop a renewable strategy that was going to provide a solution for our tenants. This solution from Belfry enables us to heat properties at a cost that tenants can more readily afford, so we are addressing the fuel poverty issue head on. This will help us educate tenants on energy efficiency and significantly reduce their fuel bills.’

in principle, the current regulations have no teeth. The lack of enforcement is a concern and we are talking to government about how this can be achieved – enforce this type of regulation and people will adhere to it.’

Air force Compliance with Part F is essential in keeping on course with the government’s targets for zero carbon buildings, and has set the standard for the maximum carbon dioxide emissions for whole buildings. By introducing a performance-based approach, it has allowed designers the flexibility to specify the correct solution for adequate ventilation, while taking into account what is energy efficient, cost effective and practical. There is now an emphasis on controlling and managing

airflow and, hence, heat loss. The only way to do this effectively, while still keeping the building safe and comfortable, is to employ some sort of powered ingress/ extraction system – mechanical ventilation systems, sometimes with heat recovery. Part F addresses this by

September 2011 ECA Today 25

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