Article: ERF 220
ERF roof fans are designed to be used in residential, industrial and public buildings for air extraction and for elimination of non-explosive gas mixtures
For outdoor application at temperatures from -30 to +60 °C. The fans are designed to be installed on the roofs of different types in a horizontal position only. It is also important that the rotational axis of the motor is to be set vertically. Mounting is to be done on a specially prepared base or onto the roof output of a ventilation shaft (air duct).
ERF is equipped with a single-phase induction motor with an external rotor and an armature with the high ohmic resistance. Also implemented with a self-resettable overheating protection with a restart. Has IP54 rating: motor protection from water and contamination of dust and other particles. F-class insulation provides higher reliability and durability of the motor making it resistant to high temperatures. The casing is made of galvanized steel and additionally protected by a polymer coating from environmental influences
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