Fire Alarm Door Holder Wiring Diagram

Emergency door release wiring diagram.

Fire alarm door holder wiring diagram.

That much is. Access solo dcu2 single door access contol unit. The magnetic portion of this device is installed on the wall that meets the open fire door now to tie this whole concept together you will. Making the magnetic field electrical current passes through the coil of the door holder.

They must be used in conjunction with closing devices. Fire alarm door holder wiring diagram. Electromagnetic magnetic door holder with switch. Electromagnetic door holder releases are designed for virtually any remote door release applications.

It will interrupt the power if alarmed causing the doors to be released thus allowing the door closers to close the doors. 114 142 fire u0026 security. When power is restored the magnets will re energize permitting the doors to be manually returned to their held open position. Fire smoke barrier doors door releases when tripped by an alarm or smoke detector private offices door releases when triggered by a remote switch.

A magnetic door holder is a relatively simple device that when powered typically by 24vdc or 120vac will create a magnetic pull. Wiring them depends on what smoke heat alarms you have in if you have a fire panel unlikely in domestic unless landlord flats then use the open on alarm volts free relays to drop power to magnets if you have mains smoke heat detectors then they need to have an auxillary volts free output so you can use it again to drop power from magnets on alarm. The door holder is an electromagnet a door holder prevents the door from closing because it hangs onto the door using magnetism. When the fire alarm system detects smoke the current to the door holder turns off allowing the door to close.