Door holders closers can play an important role in controlling smoke migration in a building.
Magnetic door holder fire alarm.
The device holds a door open while energized.
Depending on your fire alarm installation you may need to install a magnetic door holder at the location of each fire door.
When activated by a fire alarm the magnet shuts off and releases the door.
We offer a variety of magnetic door holder and magnetic fire door holder finishes including us28 luma sheen duranodic and gold.
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.
Both versions are supplied with a door mounting keeper plate.
Wire these holders directly into your fire alarm system.
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.
Both door holders are fitted with an integral manual release button allowing the door to be closed without operating the fire alarm.
Electromagnetic door holders should be used and.
Door holders are normally energized to magnetically hold doors open.
To close fire doors in an emergency and prevent the spread of fire and smoke.
In the event of a power failure they release the door to a closed position to keep the facility secure.
En1155 1997 cpd approved floor mounted 24v dc door holder 04390 41.
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.
A magnetic door holder is a relatively simple device that when powered typically by 24vdc or 120vac will create a magnetic pull.
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.
All are reversible for right or left door swing directions.
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.
These door holder releases have a holding force of approximately 25 lbf 111n.
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.
Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices.
They provide a high holding force.
