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Blauberg BSK2 50x30/2 72S/O O


Normally open fire-resisting duct damper with mechanical drive mechanism.
EAN codeEAN
  • Description
  • Characteristics
  • Downloads
  • Designation key
  • Mounting
  • Dimensions
Description
Description
USE

The fire dampers are intended for automatic closing of process openings and air duct penetrations in intermediate floors, walls and partitions, as well as closing of openings in supply and exhaust ducts of smoke ventilation systems. The dampers of this particular design are not suitable for installation in air ducts and ducts of premises with rated explosion and fire safety category A and B and in flammable and explosive mixture intakes. The BSK2 fire-resisting duct dampers are capable of resisting fire for at least 120 minutes (EI 120) at the temperature of 600 °C.

DESIGN

The BSK2 series dampers are made in the general-purpose industrial version with a minimized variety of hardware components using low-alloy galvanized steel. The damper flap is made of fire-resistant material. The duct installation design results in two mounting flanges on the casing for integration into a ventilation ducts (air ducting) and external configuration of the drive mechanism for easier maintenance.

CONTROL AND MODIFICATIONS

The BSK2...72S dampers are equipped with mechanical actuating unit with a thermal fuse and a return spring.The damper is set to the operating position upon the thermal fuse breakdown resulting from a temperature increase. The damper can then be re-set to the protective position only manually by using a handle and by replacing the thermal fuse through the access hole. Emergency damper actuation: the flap remains in protective position (damper unaffected by fire) and is fixed by a thermal fuse (when the flap is installed in security position, a reverse spring is activated). Upon emergency actuation (damper directly affected by fire) the thermal fuse breaks down and the return spring moves the flap to operating position.

THE BSK2...72S FIRE SAFETY DAMPER WITH A MECHANICAL ACTUATING UNIT WITH A THERMAL FUSE AND A RETURN SPRING

Characteristics
Characteristics
Parameter BSK2 50x30/2 72S/O O Measurement unit
Air pass 0.13
Weight 22.5 kg
Width 500 mm
Height 300 mm
Mounting Inline -
Documents archieve
Documents archieve
Name
BSK2 - data sheet (pdf 2.01Mb)
BSK2...72S - image (png 587.74Kb)
Designation key
Designation key

Mounting
Mounting

The damper must be installed into the building envelope structure in accordance with the applicable standards and regulations. The seal fire resistance must be at least equal to that of the building envelope. The dampers can be installed in any position in vertical and horizontal ducts of fire-protection structures. The ducts for damper installation must be made in such a way so as to prevent the transfer of loads caused by the fire-protection structures to the damper casing. The adjoining air duct must be suspended in such a way so as to prevent the transfer of air duct load to the damper flange. The minimum free space for accessing the control parts must be at least 350 mm. Make sure to arrange an inspection hole. While carrying out the installation consider size K. When two or more dampers are installed into the same fireprotection separation structure, the distance between the two adjacent dampers must be at least 200 mm.

If such installation is not possible, the damper casing part between the fire-protection separation space and the damper flap must be insulated with a suitable material pursuant to the applicable standards. If such installation is not possible, the damper casing part between the fireprotection separation structure and the damper flap must be insulated with a suitable material pursuant to the applicable standards. The damper casing must not deform any deformation during embedding. After the installation the flap must not catch against the damper casing while opening or closing. The fire safety damper can be integrated into a tight wall structure – e.g. made of conventional concrete work of minimum width W = 100 mm or into a plasterboard wall of the necessary fire resistance class or into a tight ceiling structure – e.g. made of conventional concrete of minimum width W = 150 mm. Do not use any foaming substances for sealing the damper in the separation structure.

INSTALLATION RECOMMENDATIONS FOR BSK2...72S DAMPERS WITH THERMAL FUSE AND RETURN SPRING

IN VERTICAL BUILDING STRUCTURES IN HORIZONTAL BUILDING STRUCTURES

Dimensions
Dimensions

Duct cross-section Size [mm] Weight [kg]
B B1 B2 B3 H H1 H2 H3 S
BSK2 50x30/2 72S/O O 500 520 540 580 300 320 340 380 615 22.5
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