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Fire dampers are shutters in ducts of air-conditioning devices that prevent spreading the fire and
combustion products from one fire segment to the other one by means of closing the duct in the
points of fire separating constructions.
Dampers blade automatically closes air duct using a shutting spring or an actuating mechanism
back spring. Closing spring is released either by pushing of the button or by thermal fuse.
The back spring of the actuating mechanism is started when the thermoelectrical starting
mechanism BAT is activated, when a reset button on BAT is pushed or when a power supply of
the actuating mechanism is stopped.
The damper is sealed with a silicon packing against smoke penetration after closing the blade. At
the same time, the damper blade is bedded in a material which enlarges its capacity and air
proofs the air duct.
Dampers have two inspection holes.
Damper characteristics
• CE certified acc. to EN 15650
• Tested in accordance with EN 1366-2
• Classified acc. to EN 13501-3+A1
• Fire resistance EIS 120 - 500 Pa, EIS 120, EIS 90
• Leakage acc. to EN 1751 - External Casing leakage: A<160 or B<160 class B
A≥160 and B≥160 class C
- Internal leakage: class 2
• Cycling test in class C 10000 acc. to EN 15650
• Corrosion resistant acc. to EN 15650
• ES Certificate of conformity No. 1391-CPR-2020/0136
• Declaration of Performance No. PM/FDMB/01/22/5
• Hygienic assessment of fire dampers - Report No. 1.6/pos/19/19b
Working conditions
Right damper function is secured under the following conditions:
a) Maximum air circulation speed: 12 m/s
Maximum pressure difference: 1200 Pa
b) The air circulation in the whole damper section must be secured as steady on whole
surface.
Operation of the dampers does not depend on the direction of air circulation. The dampers can
be located in an arbitrary position.
Dampers are suitable for systems without abrasive, chemical and adhesive particles.
Dampers are designed for macroclimatic areas with mild climate according to EN 60 721-3-3.
Temperature in the place of installation is permitted to range from -30°C to +50°C.
