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Box-fan range incorporates EC motors and control system
Published: May 2011
Flakt Woods’ latest box-fan range incorporates EC motors to achieve higher fan efficiencies and lower energy consumption — in line with Part L of the Building Regulations. The EC TwinBox product includes controls and features the company’s second-generation fan controller, which has a simplified control interface for easy installation and commissioning. Air volumes up to 1.7 m3/s can be delivered against static pressures of up to 870 Pa. Motors have a soft-start function to increase reliability and extend life. The integral control strategy can be customised to suit variable- or constant-pressure systems. Signals can be received from a range of sensors — including PIR, pressure, air-quality, temperature and humidity — to control the fan speed according to demand. Sensors are supplied with 10 m of cable attached for wiring and terminating on site into a connection plug, which is fitted into the intelligent fan-control unit. There is no need for interconnecting wiring between sensors and their associated valves or from dampers at extraction points back to the fan. For more information on this story, click here: May 2011, 165 Related articles: 
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