FDMB – 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.
Characteristics
- Dampers from 100 × 100 mm to 1 000 × 500 mm
- Certified acc. to BS EN 15650
- Tested in accordance with BS EN 1366-2
- Classified acc. to BS EN 13501-3+A1
- Fire resistance up to EI 120 S
- External Casing leakage class C
Internal leakage class 2 acc. to BS EN 1751
- Corrosion resistant acc. to BS EN 15650
- Cycling test in class Cmod / C10000 – acc. to actuator type, acc. to BS EN 15650
- Damper actuating mechanical, or electrical
- Maximum air speed through opened damper of 12 m/s and pressure difference 1200 Pa
- Can be used in explosion-hazard environments