Fire damper ETPS-E

If the fire damper is installed in a construction element with fire class EI, the
ductwork must be equipped with fire insulation and safety distances must
be observed. In this way, also the spread of fire can be prevented. If the fire
damper is installed in a construction element with fire class E, no fire insulation
is required in the duct, and no safety distances need to be preserved.
When the fire damper is used to prevent the spread of fire and flue gases, it
has to close after it has received a signal from the smoke detector which is located
in the duct or other suitable location.
• The fire damper is open during normal ventilation.
• When the smoke detector detects smoke, the power supply to the actuator is
interrupted and the damper closes automatically.
• The fire damper is equipped with electrical switches for indicating the end
positions of the damper (open/closed).
• The air flow direction has no effect on the functioning of the fire damper.
The standard delivery of the fire damper includes a built-in electrical actuator
24 V or 230 V, spring-return and switches for indicating the end positions of
the damper. The damper spring is normally tensioned but in case of a power
cut it closes the damper automatically.