The cost of installing a system to control natural air movement to ventilate buildings has become potentially non-existent.....

Passivent's Enhanced Digital Controller is the first kit of its kind to be recognised as approved equipment in the Government's Enhanced Capital Allowance (ECA) scheme, which is managed by the Carbon Trust. It means that if a company installs a Passivent EDC to manage its ventilation system, it can potentially claim back 100% of the cost of the control system, instead of the traditional 25%*.

Passivent's Enhanced Digital Controller for zonal applications is fully programmable to meet the demands of different applications, with separate control of several zones, and a night cooling strategy. In addition to internal and external temperatures, sensors can monitor carbon dioxide, air quality and humidity. Passivent has also developed Enhanced Thermostatic Controls for single zone use.

Wayne Aston, Passivent Commercial Technical Manager, explains, "Building Regulations are increasingly focussing on lowering energy use as well as prevention of overheating within buildings. Low energy natural ventilation has to be properly controlled, to balance air movement, air quality, daytime heat build-up and night cooling, whilst allowing occupants to take control of their environment if they want. Our range of controls has been specifically developed to provide this, hence its eligibility for the Enhanced Capital Allowance Scheme. Currently, only control systems, not ventilation products, have achieved ECA accreditation."

Passivent's comprehensive service for control systems includes selection advice, wiring diagrams, installation, commissioning, post installation inspection at six months and on-site demonstration and training, all carried out in accordance with CIBSE Guide C.

Passivent is the UK's leading designer and supplier of natural ventilation systems for both domestic and commercial applications. The company is a founder member of the NatVent EC-EU funded project co-ordinated by the Building Research Establishment to develop practical natural ventilation solutions for the commercial sector. It has also contributed to the BISRIA guide BG2/2005 Wind Driven Natural Ventilation Systems, as well as being members of the DfES steering committee on ventilation guidance for schools, Building Bulletin 101.

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