Magnetic Door Holder Fire Alarm

Both door holders are fitted with an integral manual release button allowing the door to be closed without operating the fire alarm.

Magnetic door holder fire alarm. En1155 1997 cpd approved floor mounted 24v dc door holder 04390 41. Our cal royal magnetic door holders and magnetic fire door holders are ul listed for both the us and canadian market as well as approval from the california department of forestry and fire for the state of california. In the event of a power failure they release the door to a closed position to keep the facility secure. 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.

Electromagnetic door holders should be used and. Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices. Wire these holders directly into your fire alarm system. Both versions are supplied with a door mounting keeper plate.

These door holder releases have a holding force of approximately 25 lbf 111n. These fire rated door holders have an energized coil which creates a magnet strong enough to hold the self closing fire rated doors in the open position. When de energized by a relay controlled by the fire alarm system or other switch the door is released to a closed position checking the spread of smoke and flames. On the fire alarm side you would need a control relay to intercept a switch leg of power to the door holder circuit as well as an initiating device such as a smoke detector to activate the relay.

All are reversible for right or left door swing directions. To close fire doors in an emergency and prevent the spread of fire and smoke. For use with doors that already have a closer these holders keep doors open with an electromagnet. Door holders are normally energized to magnetically hold doors open.

The dorgards are great by the way but if the spec is magnetic door retainers they may want them as opposed to dorgards but if its high end property which a flat worth 3 5 mill is id expect a proper fire alarm in tbh a 2 zone panel is cheap enough and will give you the felxibility you need and give you extra income on repairs and servicing. Door holders closers can play an important role in controlling smoke migration in a building. Depending on your fire alarm installation you may need to install a magnetic door holder at the location of each fire door. 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. In the event of a fire emergency the fire alarm control panel or other compatible control means will release the magnet allowing the door to close to prevent the spread of smoke. Mount the wall plate in an electrical outlet box or use a surface mount box sold separately.