Method for controlling the volume flow of a ventilator

摘要

The method involves regulating power levels during switching from one power level to another power level. Predetermined rotational speed of a fan motor is adjusted to achieve predetermined flow rate. The adjustment of the rotational speed is carried out according to a desired-actual comparison. Volume flow is adjusted after a target-actual comparison. The predetermined rotational speed value of the fan is stored in a storage and determined with successive adjustment operations. A fan module is provided to a ventilation unit for supplying a room with air.