FSD-C series - Galavanised Steel Blades, Installation Plate (IP) & Rotatable Cleats (R-CL)

The BSB FSD-C Series, Circular Single Blade Combination Fire and Smoke Damper.

The FSD-C Failsafe Single Blade Motorised Fire and Smoke Damper has been designed specifically for installations where space is at a premium. The FSD-C Single Blade Fire Smoke Damper provides greater free area than comparable sized conventional multi blade fire smoke dampers.

The installation plate, with its engineered installation perforations, acts as a template to allow the marking of the fixing positions on the surface structure to which the plate will be affixed, allowing for a quick and efficient install.

• Tested and certified installations variants for the FSD-C are available for drywall partitions, masonry walls/ floors, masonry floors with Batt Infill and flexible fire curtain installations.
• All BSB tested installation methods give at least a E60 classification.
• The BSB fire damper offers a unique patented blade design.
• Halogen free LSF cable
• Exceeds the requirements of EN1366-2
• Reduced commissioning time
• Thermal fuse replaceable external to the duct.
• Test switch integral to the thermal fuse allowing the BSB smoke damper to be tested locally and individually.
• LED indication that power is available to the actuator and the thermal fuse is intact.
• Installation plate with template location holes to allow easy installation.
• ES classified fire dampers with reduced smoke leakage characteristics to BS EN 1366-2 (test standard) and BS EN 13501-3 (extended field of application)
• Aerodynamically Air Control tested to BS EN 1751
• Tested and assessed installation methods in differing support constructions BS EN 1366-2
• Can be installed from one side of the fire separation without the need to fit a secondary installation plate or provide fire-rated infill material
• Replaceable thermal fuse element from outside of the duct.
• Commissioning friendly
• Blade Position Indicator
• IP54 degree of protection
• Momentary toggle test switch for periodic damper testing
• LED green indication when lit indicates that a supply voltage is present and that the temperature fuses are operational
• Damper casings conform to BS EN 1506

Price excludes actuator, please search for FSD-C Series Actuator

What is a fire damper and why might they be needed?
The FSD-C Series Single Blade Circular Fire Damper is designed to stop the spread of fire through ducts passing through walls and floors. The product range has many features and options to meet the requirements of specifiers, contractors, local and national authorities. Dampers are available to suit both low/medium and high velocity applications.

What are the ‘E’ and ‘ES’ classifications?
To achieve the classifications to EN13501-3, fire dampers and fire and smoke dampers shall be tested to EN1366-2 and a 300Pa pressure difference is applied across the damper. During the fire test period, the integrity of the seal between the damper and the structure shall not have any gaps larger than 150mm x 6mm. There shall not be any sustained flaming. The largest size of damper to be manufactured for sale as a single section shall be fire tested.

E = Integrity
The maximum leakage permissible at 300Pa corrected to 20°C is 360m3/hr/m2 (100 l/s/m2) throughout the fire test period.

ES = Integrity with Smoke Leakage Performance
The maximum leakage permissible at 300Pa corrected to 20°C is 200m3/hr/m2 (55.5 l/s/m2) at ambient prior to the fire test and throughout the fire test period. In addition, for the ES classification to be attained, the smallest damper must also meet the 200m3/hr/m2 maximum leakage with a 300Pa pressure across the damper. (This is equivalent to just 0.55 l/s on a 100x100 damper).

Fire dampers should be installed as tested. Some applications (fan off) allow the use of tests undertaken to BS 476-20/22 and this is also allowed worldwide in areas outside of the EU. Test reports showing testing to EN 1366-2 should be acceptable to meet the requirements of BS 476-20/22, but the reverse is definitely not the case and no classifications are available. 

However, as a word of caution, in whichever case, the correct model must be selected, to match fire resistance time with installation method and with the supporting construction (wall or floor). To ensure that all testing and assessments are traceable back to initial fire test reports, the BSB FSD-C series is product certified by the Loss Prevention Certification Board (LPCB). This means that in addition to normal BS EN ISO 9001 compliance, the product is also checked to ensure that the same product is being manufactured that has been tested or assessed.