CFDM 250
Fire damper
CFDM 250 - The Damper in the HVAC equipment duct that prevents the spread of fire and combustion products from one fire segment to another by shutting off the airflow at the fixture points.
Properties
•Round damper 250 mm
•Damper actuating mechanical
•CE certified acc. to EN 15650
•Tested in accordance with EN 1366-2
•Classified acc. to EN 13501-3+A1
•Fire resistance EI 90 S
•Internal leakage class 2 acc. to EN 1751
•Corrosion resistant acc. to EN 15650
•Maximum air speed through opened damper of 12 m/s and pressure difference 1 200 Pa
Specifications
Fire dampers are shutters in duct systems of air-conditioning devices that prevent spreading the fire and combustion products from one fire segment to the other one by means of closing the air duct in the points of fire separating constructions. Dampers blade automatically closes air duct using a shutting spring. The damper is sealed with a plastic foam packing against smoke penetration after closing the blade. At the same time, he damper blade is bedded in a material which enlarges its capacity and air´proofs the air duct.