Towed ACU

electricfor aircraft

The aircraft heater, AH74, is a main power operated aircraft cabin interior heater designed to keep warm, heat or ventilate aircraft through the ordinary air condition intake. The fan gives a static pressure of 3,2 kPa, flow operation 3 200 m3/h. The pressure level is flat up to 4 000 m3/h but during today tests, ERRI has decided to optimize the capacity at a flow capacity to 3 200 m3/h. The interior heater is with these characteristics able to warm keep all types of aircraft regardless of the resistance in the aircraft tubing system. Please note that special arrangements have to be made to avoid a pressure build-up if the aircraft outflow valve is closed on ground, still within aircraft manufacturers pressure limits. The heater is a result of long experience, ERRI AB was found 1988, and careful studies of aircraft requirements of airflow and pressure. Warm keeping is necessary in order to achieve a non-dew point passage and as consequence give a comfortable temperature in the aircraft. Heating up after a dew point passage has raised the risk for condensation and it takes more power to take condensate water out of aircraft than avoid it happen with warm keeping. The heater will automatically maintain the selected temperature regardless of outside temperature. The temperature selection is set in the PLC-system and can only be changed by reprogramming the system.