wiring system requirements regarding motorized fire dampers

[mustafa]

Please advise (with code references) power supply /electrical connections requirements for motorized fire dampers.
Regards

 

[electrofelon]

Please advise (with code references) power supply /electrical connections requirements for motorized fire dampers.
Regards

I have a job that has some of these. I have never had to connect these before and I haven't looked into it yet, but am not aware of any special requirements. Power holds them open so there is no need for any backup power supply

 

[mustafa]

is it required dedicated circuit,cable type, disconnecting means requirements...etc?

 

[electrofelon]

If you Google "Mike holt fire damper" (try smoke damper too) you will find some past threads that should answer your questions.

Seems like dedicated circuiting not required, disconnect not required. I don't see any reason to provide a different wiring method than for any other widget.

Might want to find out if they need a connection to the FA system or to kill the air handler if they close/fail.