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  1. Jan 15, 2022 · HOW TO INTERFACE FIRE ALARM TO SMOKE DAMPERThis video presentation is a general overview of the concepts and proper code application of interfacing a fire al...

    • 20 min
    • 3.5K
    • Auxilectrical Tv
  2. Aug 12, 2021 · What is a fire or smoke damper, where are they installed, and how should they be installed?

  3. Aug 19, 2014 · The sequence of operation is: During normal operation the pressure under the floor is maintained by modulating the damper mounted in the shaft wall. If a fire occurs and the temperature at the damper reaches 165°F (74°C), then the damper closes. If smoke is present in duct (or space area), then damper closes. Summary.

    • Lisa Hickey
  4. Oct 21, 2023 · Fire Dampers and Smoke Dampers. By MEP Academy Instructor. October 21, 2023. 0. 6328. smoke damper installed in air duct. In this article we’ll show you how fire dampers and smoke damper work and why they are used. We’ll start with a single large air conditioner on the roof of a two-story building, but this could apply to larger buildings also.

  5. ventilation is employed, make-up air dampers are installed in the lower side walls (see the lower left grey components in Figure 1). If a fire occurs, the fire alarm system signals the atria exhaust system to start. As the exhaust fan starts, its discharge damper opens simultaneously (a barometric damper may be used instead of an actuated damper).

  6. Sep 16, 2019 · NEC 760.136 (A) Power-limited fire alarm circuits must not be placed in any enclosure, raceway or cable with conductors of electric light, power or class 1 circuits. NEC 760.136 (B) If the circuits are separated by a barrier, power-limited fire alarm circuits are permitted with electric power conductors.

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  8. The wiring of a dual-sensor combination fire and smoke damper can be seen in Figure 2. If a fire were to break out and duct temperature were to increase to 165 ̊F, the damper would spring closed to keep the fire from spreading. However, firefighters could choose to reopen the damper for smoke-control purposes.

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