Smoke Detector Equipment Shutdown 1

[nuuvox000]

Hello, I am in the design phase and I will have a makeup air unit and two exhaust fans that penetrate a shaft between building levels. They will have fire/smoke dampers per code to maintain the shaft fire-rated assembly. I would like the equipment to shut down when the dampers close to avoid over-pressurizing or under-pressurizing the duct. Is this typically something an electrician wires up? Do I need to include a microcontroller with the equipment or anything special or can they do it all with their electrical magic? Thanks!

 

[GT-EGR]

Easiest electrical magic is if your makeup air unit has a safety cutout circuit (or in series with the start/stop) and in that cutout circuit you put a high limit pressure switch on the main duct. Set that switch below your duct pressure class and it should kill the fan anytime you rise above it, whether it’s FSD closure or something else.

You could have the BAS get FSD closed position feedback, but that probably will not communicate the high pressure in time.

There are also engineered blowout panels that can be installed in the ductwork to open when the pressure gets too high which will protect the rest of the ductwork.

 

[nuuvox000]

That's so helpful, thank you!