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FDR-3G…OF
Technical Parameters
Durability test
• 50 cycles/manually operated activation mechanism – with no change of the required properties
• 10000 + 100 + 100 cycles/actuator operated activation mechanism – with no change of the required properties
Fire testing pressure
Underpressure up to 300 Pa
Safety position
Closed. (In fire scenario the damper closes via spring in actuator or spring in manual mechanism)
Airflow direction
Both directions
Allowed air velocity
Damper can still operate at max. 12 m/s. Air without any mechanical or chemical contamination
Side with fire protection
Depending on installation classification: From both sides (i <-> o)
Repeated opening
Suitable for daily check procedure. It is not possible to operate the device after reaching Activation temperature.
Activation Temperature
• Manually operated: 74 °C as standard by means of a spring after the melting of the thermofuse and/or after smoke
sensor detection.
• Actuator operated: 72 °C as standard by means of the spring after current interruption in the electro-thermal fuse
and/or after smoke sensor detection.
Operational temperature
• Minimum: 0 °C
• Maximum: 60 °C for 74 °C and 72 °C thermofuse
Environment suitability
Protected against weather disruptions, with temperature above 0 °C, up to 95% Rha, (3K5 according to EN 60721-3-3)
Open/Closed indication
• Manually operated microswitches - Activation types H2-OF up to H6-2-OF
• Actuator operated built-in microswitches - Activation types B230T-OF/G230T-OF up to BSD24T-OF/GSD24T-OF
Closing/Opening time
Manually operated < 10 s, actuator operated < 20 s
Inspection possibility
By opening of the inspection lid. For smaller than DN160 after removing of the activation mechanism, or a inspection
opening must be added to the connecting duct. Smoke senzor can be tested with test button or through damper grille
with smoke spray tester.
Maintenance
Not required. Dry cleaning if demanded by law in the country in which the dampers are installed.
Revisions
Determined by law in the country in which the fire dampers are installed but at least every 12 months.
Allowed pressure
1200 Pa
Summary of Contents for A-FDR-3G-OF
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