Key Features

• Smoke control dampers FDSD are used in smoke extraction systems for extraction of smoke gases or providing supply air to one or more fire compartments. Smoke control dampers consist of steel sheet case, calcium silicate damper blade, damper blade mechanism outside of the airflow and an electric actuator.

• Smoke control damper case is made out of galvanized steel sheet casing. Variants produced from stainless steel and powder coated steel are also available. Calcium silicate blade is equipped with brass bearings and seals made out of polyurethane and elastomer rubber.

• Smoke control dampers FDSD are produced in sizes from 200x200 till 1200x800 mm.

• FDSD dampers are equipped with Belimo actuator drives in 24 V or 230 V versions.

• Activation of smoke control dampers equipped with electric drives can be via smoke detector or remotely via control signal. Rearming of the electric smoke damper can also be done remotely via control signal. All electric actuators are equipped with end switches for position signalling.

• In the case of fire, there are two possible safe positions for the smoke control damper, open or closed, depending on the situation on site and smoke extraction scenario.

• Smoke control dampers are designed for installation in standard rigid supporting construction at least 100 mm thick, with bulk density of at least 450 kg/m3. For such installations, fire resistance up to 90 minutes is achieved.

• All smoke control dampers are tested according to the EN1751 for airtightness and retain class 3 leakage on the closed damper blade and class C on the casing air leakage.

1. Galvanized steel sheet casing

2. Smoke seal

3. Smoke resistant damper blade

4. Intumescent joint

5. Connection flanges

6. Actuator