Ducts, dampers & transits · Damper concept
What is the difference between a fire damper and a smoke damper?
A fire damper is intended to restrict the spread of fire where a duct or opening passes through a fire-resisting barrier, and typically closes in response to heat. A smoke damper is intended to control the movement of smoke, and is generally operated by a detection or control system rather than by heat alone. Combination fire and smoke dampers perform both functions. Which one an opening requires depends on the building design, the system duty and the evidence supporting the installed assembly — and a damper being present in an opening does not tell you which requirement it was installed to meet.
What to do next
Send the tag, the schedule reference, the drawings you have and photographs of the actual condition. We will tell you what they show, what they cannot, and what else is needed before anyone gives a conclusion.
General information only. A conclusion about a specific condition requires the actual construction, the evidence behind it and the site condition to be reviewed.