Fire Alarm Door Holder Wiring

En1155 1997 cpd approved floor mounted 24v dc door holder 04390 41.

Fire alarm door holder wiring. Wire these holders directly into your fire alarm system. They provide a high holding force. Fire alarm door release power supply installation instructions important notes these instructions should be read carefully before installation of the equipment. To close fire doors in an emergency and prevent the spread of fire and smoke.

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. This is a piece of class 1 equipment and must be earthed 3. With that said magnetic door holders are used as a convenience to hold doors open during normal operation. For use with doors that already have a closer these holders keep doors open with an electromagnet.

Dropping door holder power with loss of ac voltage when designing a fire alarm system you may come across the need for magnetic door holders. When the fire alarm system detects smoke the current to the door holder turns off allowing the door to close. The door holder is an electromagnet a door holder prevents the door from closing because it hangs onto the door using magnetism. Often this is done on a global basis any alarm will drop power to all door holders but sometimes the door holders may be controlled in groups.

Mount the wall plate in an electrical outlet box or use a surface mount box sold separately. Both versions are supplied with a door mounting keeper plate. Making the magnetic field electrical current passes through the coil of the door holder. When activated by a fire alarm the magnet shuts off and releases the door.

This equipment must be installed and maintained by a suitably skilled or technically competent person. Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices. Holders which would release and close the fire doors. Electromagnetic door holder releases are designed for virtually any remote door release applications.

Depending on your fire alarm installation you may need to install a magnetic door holder at the location of each fire door. That much is. The following are some examples of how you can wire door holders with pros and cons to each example 1. 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.

A magnetic door holder is a relatively simple device that when powered typically by 24vdc or 120vac will create a magnetic pull. Fire smoke barrier doors door releases when tripped by an alarm or smoke detector private offices door releases when triggered by a remote switch. They must be used in conjunction with closing devices. In the event of a power failure they release the door to a closed position to keep the facility secure.