How Does it Work?
Natural smoke and heat exhaust ventilators (NSHEVs) are installed to clear smoke and hot flue gasses in the event of a fire in order to keep escape and emergency routes clear, and/or provide smoke-free space for fire-fighting.
NSHEVs can vent directly through external walls and roofs using windows, louvres and rooflights, or through internal smoke shafts using smoke dampers
The SHEVs can be triggered automatically via smoke detection or fire alarm interfaces, or manually using call points/break glasses. The SHEVs then open fully within 60 seconds to remove the smoke.
The SHEV’s can be programmed to be reset and closed automatically or manually through the control system.