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HomeProducts Hot/Shield High operating temperature smoke management and fire dampers






Tested and approved to
BS 476 Part 20


Advanced Thermal Enclosure

  
 

Actionair Hot/Shield
High operating temperature smoke management and fire dampers

Actionair have developed the Hot/Shield PTC™ High Temperature Smoke Management and Fire Dampers along with the Hot/Shield Vent PTC™ Smoke Control and Extract Dampers to enable the concepts of fire engineering to be employed in ducted smoke ventilation systems.
These dampers designed, tested and approved to deliver high temperature operation at up to 300 °C for one hour, provide the designer with the capability of extracting hot smoke and combustion gases through a common smoke extraction duct linked to adjacent fire zones and floors.

Application
As smoke can spread rapidly and efficiently through a building ductwork system, damper operation needs to be initiated by a smoke detection system, as thermal sensing can often be too late. Hot/Shield PTC™ and Hot/Shield Vent PTC™ dampers are designed to be interfaced with a smoke detection/fire alarm system.

 

Construction Hot/Shield PTC™
Catalogue
Hot/Shield Vent PTC™ High Operating Temperature Smoke Control and Extract Dampers comprising of 75mm stainless steel aerodynamic blades incorporating synthetic seal, with stainless steel blade end bearings and peripheral gasketing. Housed in a galvanised fully welded, spigotted casing suitable for square, rectangular, circular or flat oval connections. The totally enclosed precise movement opposed blade drive shall be positioned out of the airstream for protection against damage, be hard wearing and free running. The Control Mode/Damper connection shall be by means of the snaplock™ drive interface mechanism, which is totally independent of the ductwork. Hot/Shield Vent PTC™ dampers and the in appropriate insulated control modes shall be arranged for motor close and spring open operation.
 


 

Actionair have developed a new technically advanced thermal enclosure in conjunction with the manufacturers of the base product to achieve and exceed a total immersion of damper and actuator assembly at elevated temperatures test specifications.
This new enclosure is made from a phenolic composite resin with excellent endothermic properties. A chemical reaction occurs within the insulating material when it is heated. This reaction has the effect of lowering the temperature inside the enclosure, thus prolonging the duration of the actuator’s operation at elevated temperatures.

New PTC Control Modes and Ancillaries


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These new series of control modes achieve 60 seconds to drive to the end position, with a 20 second spring return time. This brings Actionair dampers in line with imminent European standardisation for fire and smoke control.
  

Approvals

  
  • Hot/Shield PTC™ dampers, when closed, are compliant to BS 476 Part 20 Fire Damper Test Standards.
  
   

Specification for HOT / SHIELD PTC

Smoke management dampers shall be of double skin spigot case having continuously welded corners and spigot connections. Stainless steel aerofoil blades of double skin construction, interlocking within twin trailing edges, the interlocking providing a double metal seal. Incorporated within the blade profile is a silicone seal to ensure low closed blade leakage at temperatures up to 300°C for 2 hour. Smoke management dampers to be complete with factory fitted installation frames (where specified) to HVC 06/05/83 specification. Smoke management dampers shall be fitted with a snaplock interface and relevant control mode (24 volts or 240 volt as specified on the drawings). Hot/Shield PTC™ dampers, when closed, are compliant to BS 476 Part 20 Fire Damper Test Standards.

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