RDD 355/4 – Helios – Centrifugal Roof Fan – Horizontal Discharge
Horizontal exhaust roof fan with efficiency-optimized aluminum housing and newly developed high-performance radial impeller.
Housing made of seawater-resistant aluminum with integrated intrusion protection. Motor support plate and base plate with inflow nozzle made of galvanized steel. Base plate with threaded screws for attaching suction-side accessories (hole pattern according to DIN 24155, sheet 3). Protective grille as standard on the discharge side in accordance with DIN EN ISO 13857.
High-performance radial impeller with backward curved blades made of plastic. Dynamically balanced according to DIN ISO 1940-1.
Speed controllable three-phase external rotor motor in closed design in IP 55. Ball bearing with moisture protection insulation.Maintenance and radio interference free.
As standard with external revision switch protection class IP 65.