Efficiency and flexibility

A choice of air distribution heads gives designers the option of ductless air distribution, thereby eliminating the need for complex ductwork and high level de-stratification fan units.

Where ductwork is required, the systems can be configured to allow for ductwork resistance of up to 2000 Pascals. They are therefore suitable for use with air induction systems.

Direct-fired units are available with outputs from 15 to 900kW and provide a fixed rate of heated fresh air into the building space. Where a constant-rate extract system is employed, these units supply make-up air to maintain a pressure balance and prevent a build up of negative pressure inside the building.

Indirect gas-fired units are said to offer several advantages over traditional heat exchangers, with reduced airflow resistance leading to lower fan power requirements and higher efficiencies. Indirect fired Econo-Air models are available with outputs from 30kW and 1,200kW.

Variable air volume (VAV) models allow the volume of heated make-up air to vary in response to changing requirements. They supply 100% fresh air at all times but the volume is adjusted automatically, either by pressure or temperature sensors.

Variable air recirculating (REC) models provide a constant air volume with up to 80% recirculated air for high energy efficiency. The proportion of fresh air to recirculated can be pre-set and is adjusted automatically.

The units are Energy Technology listed by the Carbon Trust (depending on application) and as such allow qualifying users to claim 100% enhanced capital allowances.

All Econo-Air systems are CE approved for both indoor and outdoor installation and are supplied with an integrated control package designed to suit the specific application. Control units arrive fully wired and ready for installation.

The range offers high thermal efficiency for reduced operating costs and all are compatible for use with transpired solar panels, thus permitting the use of renewable solar energy.