The FDR-Ex circular fire damper is designed to divide fire compartments and prevent the spread of toxic gases, smoke and flames. The FDR-Ex fire damper is an element of passive fire protection and is, together with the method of its installation, an integral part of the assessment of the fire resistance of the building. The FDR-Ex circular fire damper is certified according to ČSN EN 15 560, tested according to ČSN EN 1366-2 and classified for EIS according to 13501-3+A1. The ATEX version is manufactured in accordance with Directive 2014/34/Eu for use in hazardous areas. The FDR-Ex fire dampers are made of galvanized steel sheet and contain lime-silica parts, fire-resistant carbon fiberglass, polyurethane foam and ethylene-propylene rubber.
The FDR-Ex fire dampers are available with manual or actuator operation, in a range of sizes from 100 to 1000 mm.
FDR-Ex fire dampers with manual operation
The actuation mechanism of the FDR-Ex fire damper is activated when the temperature at the fuse point reaches 74 °C (100 °C on request). In the event of a fire, the damper closes automatically within 10 seconds after the thermal fuse has melted. Once the damper is closed, the damper blades remain locked in the closed position and can only be opened manually.
FDR-Ex servo-drive actuated fire dampers
The FDR-Ex servo-drive actuated fire damper is equipped with limit switches as standard. The actuator closes the damper on a signal from the building management system (power interruption) or when the thermoelectric temperature sensor exceeds 72 °C. The actuator power circuit is interrupted and the spring closes the damper blades within 20 seconds.
- CE certified to EN 15 560
- Tested according to EN 1366-2
- Classification according to EN 13501-3+A1
- ATEX for gaseous and dusty environments
- II 2D Ex h IIIB T85°C...T100°C Db
- II 2G Ex h IIB T6...T5 Gb
- Manual activation mechanism with IP 44 protection
- Built-in inspection opening
Manual damper activation mechanism
H0-Ex - zone: 1.2 (Gb) 21.22 (Db)
Basic damper design, manual activation mechanism with return spring and thermal fuse with activation at 74° C (100° C on request). The mechanism is provided with an IP 44 protective cover.
H2-Ex - zone: 1,2 (Gb, temperature limit T6) 21,22 (Db, temperature limit T85°C)
Manual activation mechanism H0 + indication of open and closed position by two limit switches at 230V AC or 24V AC/DC. The limit switches are in ATEX version. The mechanism is provided with an IP 44 protective cover.
Servo-drive damper activation mechanism
SET-EX - zone: 1,2 (Gb) 21,22 (Db)
Actuation mechanism with Schischek ExMax actuator with return spring, also equipped with thermoelectric actuation sensor with activation at 72°C. The actuator includes two limit switches to signal the position of the damper blade. Power supply 24...240 V AC/DC.
SRT-EX - zone: only 2 (Gc); only 22 (Dc)
Actuation mechanism with Schischek RedMax actuator with return spring, also equipped with thermoelectric actuation sensor with activation at 72°C. The actuator includes two limit switches to signal the position of the damper blade. Power supply 24...240 V AC/DC.