Our main supply duct has motorized fire damper .why do we need branch duct FD need to be motorized due to fire suppression system?

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Posted by:
Haytham Jouda
13-March-2016

HVAC Design

Question added by Sasikumar Palanisamy
Date Posted: 2018/02/20

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by ALI RAZA , Project Engg , As Air Systems Pvt. Ltd

SUPPLY AIR DUCT DAMPER AND RETURN AIR DUCT DAMER ARE CONNECTED IN REVERSE MANNER WHEN ONE WILL CLOSE THEN ANOTHER WILL OPEN BECAUSE IN CASE OF FIRE SUPPLY AIR WILL CLOSE DUE TO PREVENT FIRE SPREAD OVER A FLOOR ANOTHER ONE (FD) WILL OPEN FOR FESH AIR FOR PEOPLE

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Our main supply duct has motorized fire damper .why do we need branch duct FD need to be motorized due to fire suppression system?

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