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Lock-on Device for Fire Rated Doors?

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Kansas Mountain

Kansas Mountain

Senior Member
Location
Oklahoma, United States
Occupation
Lighting and Lighting Control Designs
Working on an expansion for a K-12 school. There is an accordion style fire rated door between existing and new construction that will automatically close in the event of a fire. Should the breaker protecting the door have a lock-on device for critical loads, like the breaker that's protecting the fire alarm system?
 
PaulMmn

PaulMmn

Senior Member
Location
Union, KY, USA
Occupation
EIT - Engineer in Training, Lafayette College
What propels the accordion-style door to close? Springs? Motor?

With 'standard' swinging doors, there's usually an electromagnet to hold them open, and a spring-powered closer that closes them when the power fails.
 
Kansas Mountain

Kansas Mountain

Senior Member
Location
Oklahoma, United States
Occupation
Lighting and Lighting Control Designs
It is motorized. In addition to automatically closing during fire, there is a 3-button momentary contact control station so the district can close it manually as-desired. The expansion includes a gym/storm shelter that will be open after normal school hours, so the district will close it to limit what parts of the school after hour visitors can get into.
 
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