FSD-TD • FSD-TD Series

A fire damper is a device for use in heating, ventilation and air-conditioning (HVAC) systems at fire boundaries to maintain compartmentation and protect means of escape in case of fire. The BSB FSD-TD series of fire and smoke dampers are carefully engineered to fulfil the above and to have the advantage of reduced smoke leakage characteristics. They can respond to a smoke alarm input as well as having a thermal fuse. Integration with systems such as BSB’s smoke control panels will give this functionality. This means that specifiers can safely select the BSB FSDTD series for use in HVAC ductwork systems to safely fulfill the regulations in the form of Approved Document B (ADB) to protect both escape routes and areas with sleeping risk, as well as standard compartmentation.

• The FSD-TD casings are manufactured from 1.2mm galvanised mild steel and are fully welded.
  

• Galvanising
  Where detailed, galvanised mild steel is to the following specification: hot dipped zinc coated steel to BS EN 10346 DX51D + Z 275.
  

• Zinc plating
  Zinc electroplated to BS EN ISO 2081.
  

• Casings/inner frames
  The FSD-TD casings are manufactured from 1.2mm galvanised mild steel and are fully welded. Fully seam welded corners provide a rigid and air tight construction. Exposed welds are treated with protective corrosion resistant, environmentally friendly water based paint for galvanised cases with the option of being passivated for stainless steel cases. Material options are Ferritic (430) 1.4016 and Austenitic (316) 1.4401 grade stainless steel. As standard these welds will be simply cleaned and untreated. The inner bearing channels are manufactured from 1.2mm galvanised mild steel. The bearing channel incorporates punch formed low friction bearing surfaces that allow the blades to rotate freely. Where necessary, sealant is applied to joints.
  

• Blades
  FSD-TD Series dampers are supplied with opposed blade operation only. Blade material 0.7mm available as galvanised steel, Ferritic (430) type 1.4016 or Austenitic (316) 1.4401 grade stainless steel. The blades are a specially formed double skin airfoil shape, specific to BSB, on a 100mm pitch that interlock when closed.
  

• Peripheral gaskets
  To complete the damper seal there are 0.4mm 301 grade stainless steel gaskets. They are fitted between the sides and across the top and bottom of the damper blades.
  
• Blade shafts, bearings and linkage
  The blades are each mounted on two 19mm diameter spindles (1.2mm wall thickness) made from zinc plated mild steel to BS EN ISO 2081. The spindles are linked using a gear system, link arms and drive bars to give the opposed blade action. The gears are made from zinc plated 2.5mm thick mild steel. The link arms and drive strips are made from 2.5mm thick galvanised mild steel. This linkage is fully enclosed and outside the airstream.
  

• Other components
  All other components are manufactured from zinc plated mild steel, with 316 stainless options available.

• CE marked complying with the requirements of BS EN 15650
• Tested installation methods in differing supporting constructions (BS EN 1366-2)
• ES classified fire dampers with reduced smoke leakage characteristics to BS EN 1366-2 (test standard) and BS EN 13501-3 (classification document)
• Devised to respond to smoke alarms for the protection of escape routes and areas with sleeping risk (ADB)
• Devised to be controlled by proprietary fire and/or smoke control systems including BSB damper control panels
• Case leakage - Class C EN 1751
• Blade leakage - Class 2 EN 1751
• Aerodynamically Air Control tested to BS EN 1751
• Replaceable thermal fuse element from outside of the duct.
• Commissioning friendly
• Blade Position Indicator
• IP54 degree of protection
• Test switch for periodic damper testing
• LED green indication when lit indicates that a supply voltage is present and that the temperature fuse is operational

The BSB FSD-TD is available in a variety of vertical or horizontal mounting configurations from 100mm to 1000mm in single section.
Model FSD-TD-S Rectangular Spigot
Square/Rectangular Spigot Connection.
Model FSD-TD-C Circular Spigot
Circular Spigot Connection.
Model FSD-TD-O Flat Oval Spigot
Flat Oval Spigot Connection.