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. With that said magnetic door holders are used as a convenience to hold doors open during normal operation. In the event of a power failure they release the door to a closed position to keep the facility secure. This is a piece of class 1 equipment and must be earthed 3.

Electromagnetic door holder releases are designed for virtually any remote door release applications. Fire alarm door release power supply installation instructions important notes these instructions should be read carefully before installation of the equipment. This equipment must be installed and maintained by a suitably skilled or technically competent person. Both versions are supplied with a door mounting keeper plate.

When activated by a fire alarm the magnet shuts off and releases the door. The door holder is an electromagnet a door holder prevents the door from closing because it hangs onto the door using magnetism. Making the magnetic field electrical current passes through the coil of the door holder. All are reversible for right or left door swing directions.

Holders which would release and close the fire doors. Both door holders are fitted with an integral manual release button allowing the door to be closed without operating the fire alarm. The following are some examples of how you can wire door holders with pros and cons to each example 1. Fire smoke barrier doors door releases when tripped by an alarm or smoke detector private offices door releases when triggered by a remote switch.

For use with doors that already have a closer these holders keep doors open with an electromagnet. That much is. They provide a high holding force. A magnetic door holder is a relatively simple device that when powered typically by 24vdc or 120vac will create a magnetic pull.

Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices. To close fire doors in an emergency and prevent the spread of fire and smoke. Depending on your fire alarm installation you may need to install a magnetic door holder at the location of each fire door. Mount the wall plate in an electrical outlet box or use a surface mount box sold separately.

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. 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. There are no codes nation or state wide that require doors to be held open.