In case of a fire, fire dampers shut automatically to prevent the propagation of fire and smoke through ductwork to adjacent designated fire compartments. The type FKA-EU fire dampers are tested to EN 1366-2 and comply with 15650. In addition to this, national guidelines must be complied with.
Correct approved installation locations are in solid walls and ceiling slabs, remote from solid walls, and in lightweight partition walls. Airflow direction is not critical. For installation in a horizontal duct, the damper blade shaft must be horizontal.
In the case of fire, the damper is triggered either by a fusible link at 72 °C or thermoelectrically with a spring return actuator. The release mechanism is accessible and can be tested from the outside.