FDMS
Fire damper
FDMS - 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. The damper is fitted with collar, that replaces the function of the fire seals and simplifying its own installation in fire separating constructions. In case of FDMS with VAV actuator is added to the damper a function of controlling of the airflow rate - same like a variable airflow regulator. In this case the fire damper casing is extended by an extension, which includes the measurement cross and the controller.
Properties
•Dampers from ø100 to 630 mm
•CE certified acc. to EN 15650
•Tested in accordance with EN 1366-2
•Classified acc. to EN 13501-3+A1
•Fire resistance up to EI 90 S
•External Casing leakage class ATC 3,
•Internal leakage class 2 acc. to EN 1751
•Corrosion resistant acc. to EN 15650
•In case of FDMS cycling test in class C 10 000 acc. to EN 15650
•In case of FDMS with VAV actuator cycling test in class Cmod acc. to EN 15650
•In case of FDMS is mechanical control or actuating mechanism
•In case of FDMS with VAV actuator is actuating mechanism only
•Maximum air speed through opened damper of 12 m/s and pressure difference 2500 Pa
•"P-mark" certification from RISE Institute in Sweden
Specifications
Fire dampers are shutters in ventilation duct systems that preventing spreading the fire and combustion gases from one fire compartment to the other one by shutting of closing the air duct in the positions of fire separating constructions. Dampers blade closes automatically air duct using a shutting spring or an return spring of its actuating mechanism in case of fire. The return spring of the actuator is started when the thermal fuse is activated. In the case of thermos electrical fuse the activation (closing) procedure starts, when a reset button on fuse is pushed or when a power supply of the actuating mechanism is stopped. In case of mechanical control with thermal fuse, the return spring is activated after the moment, when thermal fuse is melted. The damper´s blade is sealed with a silicon gasket/packing preventing smoke penetration after closing the blade. At the same time, the damper´s blade will be tighten by intumescent tape, which will be expanding in the case of fire. Dampers have no inspection door. For inspection of the damper, there must be installed inspection door externally on the duct, next to the fire damper. The damper is equipped with additional collar, around the position of the blade. On the collar, there are positioned several metallic plates (fixtures for easy installation on the wall or ceiling construction.