Smoke Detector Door Release

Virtually any remote door release applications.

Smoke detector door release. Fire smoke barrier doors door releases when tripped by an alarm or smoke detector private offices door releases when triggered by a remote switch all devices come with a wall floor portion and a door portion armature. Holder release devices ansi bhma certified. Section 5 16 6 of nfpa 72 2006 covers the requirements for smoke detectors used for door release service. Or less nfpa 72 requires one ceiling mounted detector on either side or one wall mounted detector on each side.

In this next section you will learn why. Actuation of smoke detectors release the doors and help ensure that they close whenever smoke invades the area near the door. Today open area smoke detectors are most often used. Available with or without integral smoke detector.

The use of 120vac smoke alarms for the automatic release of smoke doors in a facility was once a common method of smoke control. Where the release of the door takes place exclusively from the smoke detector using internal relay contacts a nationally recognized testing laboratory must have tested and listed the detector for releasing device. If you are using smoke detectors for the purpose of door releasing service than the following code shall apply. Smoke detector installation for fire rated doors and magnetic door holders.

Holder release device with integral door closer with or without smoke detector. They must be used in conjunction with closing devices. The development of national fire protection association 101 life safety code and smoke detection technology required that smoke detectors release the door holders instead of fusible links. 17 7 5 6 2 smoke detectors that are used exclusively for smoke door release service shall be located and spaced as required by 17 7 5 6.

For example if the depth of wall section above the door is 24 in. The design could use area detectors installed in the smoke compartments or detectors located at each smoke door to release the magnetic hold open device and allow the door to close.