Fire Damper In Hvac Duct
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Fire Dampers Is A Device Introduced In Ducts And Air Transfer Opening Of An Air Distribution Or Smoke Control System Intended To Close Endless Supply Of Warmth
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Fire damper in hvac duct. Fusible link melts releasing the fire damper curtain. They have a fusible link that melts at 165 f releasing a spring and causing the blades to close. If your hvac keeps air flowing during an emergency your hvac unit will have a dynamic fire damper. In the event of a fire these dampers automatically stop airflow through duct.
Now a building inspector is telling us we need to install fire dampers in the ductwork that penetrates the deck to the floor above. Dampers meet ul 555 fire safety standards to help prevent the spread of fire for 1 hours. These fire smoke dampers are designed for use in hvac systems requiring emergency fire smoke control. They can accommodate airflow in either direction.
Yes it is and the inspector is correct. However in situations where the hvac fans shut down when smoke is detected or a fire alarm is triggered experts will install a standard damper also known as a static fire damper in your air ducts. We are installing a new hvac system in the basement of the hospital. According to nfpa 90a 2012 section 5 3 2 1 where air ducts extend through only.
Dynamic duct fire dampers. Heavy duty coil spring drives the fire damper curtain closed. They are also recommended for use in duct systems or penetrations of fire rated barriers designed to have pressurized airflow when dampers cycle closed during a fire. Static duct fire dampers.
Fire dampers are ul555 tested and labeled devices installed in ducts and air transfer openings or air distribution systems designed to close upon the detection of heat.
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