Roof unit for smoke and heat extraction + normal ventilation
• Vertical exhaustDVG smoke and heat extract fans are used in case of fire to extract smoke gases from rooms, and also during normal working conditions for standard ventilation. Smoke-free escape ways increase the chances to rescue people in case of fire.
The casing is manufactured from seawater resistant aluminium. The base frame is made of pre-galvanized steel. Impeller with backward-curved blades is manufactured from pre-galvanized steel (sizes 355, 450), respectively from steel, welded and galvanized. Motor outside air stream is cooled with fresh air. Connection to power supply in the service switch, connection to controller in the connection box on the casing.
In case of fire switch to fire mode and bridging of motor protective devices is necessary.