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Fire Damper

Question asked by jonrappa845 on Feb 29, 2020
Latest reply on Mar 1, 2020 by milt.werner

Has anyone ever seen anything like this before? There is a BX wire attached to a thermal link in some way and there is a spring under tension attached to the wire. I believe the spring is meant to pull the wire out of the way of the closing fire damper. What is the function/operation of this wire/thermal link?