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FMAPPROVAL 4121

Approval Standard for Fire and Smoke Door Holder and/or Release Devices

active, Most Current
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Organization: FM
Publication Date: 1 April 2013
Status: active
Page Count: 24
scope:

This standard sets the performance requirements for fire and smoke door holder and/or release devices. They shall be examined for their ability to keep a fire or smoke door in the open position by either electromechanical or electromagnetic means until such time that the unit(s) receive a signal from an external source such as a product of combustion device or a simulated alarm signal meant to test the system. 

This standard is not intended to be used to determine when or where door holder and/or release devices are used nor is it intended to be used to determine the type of detection devices to be used or where such detection devices are to be located.

This standard is not intended to qualify power operated release devices. Such devices would use this Approval Standard to assess the door holder and/or release features but must be used in conjunction with other Approval Standards, as applicable, to assess the power operator and automatic closing functions of the unit. 

This standard is not intended to qualify self-closing or automatic closing devices. The purpose of the door holder and/or release device is to keep the door in the open position until it receives a signal. Once the door is free to close, the action of getting the door into the closed position is the responsibility of the automatic closing device. 

This standard is intended to evaluate only those hazards investigated and is not intended to determine suitability for the end use of the product.

The results of tests conducted under the controlled conditions required by this standard shall not be used to describe or appraise performance under actual fire or natural hazard conditions as actual fire and natural hazard conditions vary widely.

Purpose

This standard states Approval requirements for fire and smoke door holder and/or release devices. 

Fire and smoke doors play an important role in preventing fire, smoke and other products of combustion from spreading and migrating from the room of origin to other compartments within a building. In order to perform their intended function, fire and smoke doors must be closed and securely latched at the time of the fire. In an effort to accomplish this, building codes have specified that pedestrian and vehicular openings in rated walls shall be protected by automatic closing fire and smoke doors.

In order to facilitate the movement of people and vehicles, doors are often held in the open position. When kept in the open position to allow for frequent traffic, door holders and release devices must be used. These units are connected to detectors so that when a detector is activated and sends a signal that an alarm condition exists, the door holder and release device perform their function by automatically disconnecting from the door. With the door holder and release device no longer keeping the door in the open position, the door is allowed to close due to the presence of an automatic closing device. 

The Approval criteria contained in this standard shall include, but are not limited to, performance requirements, marking requirements, an examination of manufacturing facility(ies), an audit of quality assurance procedures, and a surveillance program.

Document History

FMAPPROVAL 4121
April 1, 2013
Approval Standard for Fire and Smoke Door Holder and/or Release Devices
This standard sets the performance requirements for fire and smoke door holder and/or release devices. They shall be examined for their ability to keep a fire or smoke door in the open position by...

References

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