Rosenberg DV-G/DVS-G

The Rosenberg DV-G / DVS-G (noise-insulated cabinet)roof fans with energy-saving EC motors have a vertical air exhaust. Rosenberg DV-G / DVS-G roof fans are equipped with radial impellers with backward curved blades. Rosenberg DV-G / DVS-G roof fans in sizes 310 to 450 have an impeller made of polyamide, fans in sizes 500 to 630 have an impeller made of seawater-resistant aluminium. The casing of the Rosenberg DV-G / DVS-G fans is made of aluminium (also seawater resistant), the base frame with threaded bolt for screwing in accessories on the intake side and with the nozzle inserted is made of galvanised steel sheet. The speed control of the roof fans with EC motor is carried out by 0-10V potentiometers.