The casing of the Rosenberg roof fans DV(S) and DVE(S) consists of seawater-resistant aluminium and a base frame with integrated inlet cone (from size 560 with additional plastic coating). Casing with integrated sound insulation (Type DVS and DVES)
mpellers are mounted directly to the rotor of the external rotor EC motor and are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11.
model - DV(S) Backward curved impellers made of plastic.
model - DVE(S) Efficiency optimized and sound optimized backward curved impellers of the REVOLUTION series made of plastic.
The drive motors are fitted with a set-up terminal box in IP54, which is easily accessible for the electrical connection after removing the rain guard. Upon request, the device switch can be mounted (optional) on the casing of the fan.
