VdS approval of Installers for Smoke Exhaust Ventilation Systems for Staircases

The smoke exhaust ventilation system must correspond to the planning principles of the guidelines VdS 2221 or the relevant federal building regulations under exclusive use of VdS-recognized components. 

The approval applies to one or more VdS-recognized smoke exhaust ventilation systems for staircases. An initial approval is issued for a period of 18 months (so-called provisional approval); the final approval is issued for a period of four years. 

Stairways are important escape routes and must therefore be specially protected in the event of a fire