radial fans Commonly, these fans have been designed for local ventilation. They are installed on wall brackets inside the buildings (indoor application). As they can overcome significant air flow resistances, they are particularly efficient within the systems of local exhausts. The appliances meet the requirements of the ErP 2009/125/EC Directive. The fan consists of a spiral steel housing, motor. The aluminium radial impeller is directly installed at the motor shaft. The impeller blades cross-section reminds the profile of an aircraft wing, providing low acoustic pressure level. The fan inlet is equipped with a flange to install it on wall bracket or, directly on a filtering unit. The outlet is ended with a round ferrule to fasten safely a spiral-seam conduit (rigid duct) or to make flexible connections. For safety reason, the inlet and outlet are equipped with a protective grill. It is recommended to install a TK silencer at the fan inlet and outlet (for details see catalogue card INSTALLATION ELEMENTS). On demand of Customer, we deliver safety switches to cut off the power supply during the servicing and installing activities (see catalogue card ELECTRICAL ACCESSORIES).

Technical data Type * Measurement has been carried out with the additional TK L = 500 mm silencer installed at the fan inlet and outlet (for WPA-3-E-N apply TK L = 370 mm silencer). 1. Maximum temperature of the conveyed air is +60°C. Maximum temperature within the work area +40°C. 2. Maximum dustiness of the conveyed air should not exceed 0,3 g/m3.