fire door and alarm system wiring

RELATED FAQS

Question
Answer
Use a normally closed fire alarm as the input to the power supply option board (PS873-2 or PS914-2RS), this will hold the latch retracted.  During a fire alarm, the contact will open, dropping...
A fire rated door for 3 hours can have one glass light maximum: 100 square inches and must have an approved glass (Firelite type) Max glass size cannot exceed 12" in width or 33" in height. Wi...
If the Chexit device shipped prior to 8-24-2015  is not adjusted correctly ( Check vertical rod or Mortise finger) without using the door position switch and nuisance delay is&n...
 
Electrical hinges or a power transfer units are the most commonly used practices to run electric power to locks and/or strikes. Electric Hinges: Most electric hinges will fit into a standard 4 ...
Chexit devices shipped after 8-24-2015 with motor driven:Attached is the installation instructions of the the Von Duprin Chexit devices that includes the wiring diagrams.Installation Instructions&n...
Chexit devices shipped before 8-24-2015 with solenoid driven:Attached are the single and double door wiring , cable voltage reading documents for trouble shooting, and the installation in...
Yes, fire rated exit devices can have electric latch retraction.  However, the devices must be tied into a fire alarm system to remove power from the units so the doors will be latched in the ...