Systemair DVSI 310EV FTG - Centrifugal roof fan, vertical discharge

Speed-controllable Integral thermal contacts Low sound level Maintenance-free and reliable The DVS/DHS/DVSI models have impellers with backward curved blades and external rotor motors. All motors are speed controllable over the voltage. For speed controlling of the DVS/DHS/DVSI roof fans with a frequency converter a type with all pole sine filter is needed! The motors are suspended on effective vibration dampers. DVS/DHS/DVSI …EZ / EV / ES: 1~ motor with connection for 2-speeds DVS/DHS/DVSI …E4: 1-speed motor DVS/DHS/DVSI …DV / DS: 3~ with Y/D-connection for 2-speeds To protect the motors from overheating the DVS/DHS/DVSI up to size 311 have integral thermal contacts, from size 355 with external leads for connection to a motor protection device. The casing is made from aluminum and the base frame is powder-coated galvanised steel. Suitable for coastal applications. The impellers up to size 355 are manufactured from polyamide PA6 25GV, from size 400 in aluminium. Including a tilting device for service optio...