For natural smoke and heat exhaust ventilation, SHEV for short, smoke exhaust openings in the facade or roof are opened using electromotive drives if there is a fire. These openings expel rising heat, smoke and combustion gases to the outside. They are trig-gered by automatic and manual detectors as well as external alarm transmitters. One deciding factor for electromotive smoke and heat exhaust ventilation systems, such as those offered by D+H, is that they can also be used for everyday natural ventilation when supplemented by cost-saving ventilation components. They are controlled by manual vent switches and remote controls, temperature sensors and weather detectors. Of course, the SHEV functions are placed over the ventilation functions. The double-benefit of safety and comfort in turn presents a cost-efficient overall solution.
