Fire Alarm Automatic Door Release

Parts 1 or 6.

Fire alarm automatic door release.

17 7 5 6 3 where smoke door release is accomplished directly from the smoke detector s the detector s shall be listed for releasing service. No matter what the automatic means of smoke fire detection you use the release of one or more smoke doors is usually accomplished through an electromechanical device that holds the doors open until smoke is detected. Our system is linked directly to the fire alarm and test or live activation all the doors open regardless. The new sections allow the electromagnetic lock to be released by a door mounted release device i e.

Loss of power to the lock. The fire alarm audibility level at the position of any acoustically actuated device must be sufficient to ensure that the mechanisms will release the door upon the actuation of the fire alarm system. I felt compeled to reply to this as we have the exact same systems in place. 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.

The door access control reader and the electric lock can be wired to the fire alarm in a number of different ways. 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. The fire alarm system should have a secondary power supply to a standard as detailed in bs 5839. Actuation of the fire alarm.

We also have emergency door release boxes next to all affected doors. Installed onto the bottom of the fire door in under five minutes dorgard is listening for a continuous fire alarm of 14 seconds or more. 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. The automatic closing device is a device that causes the door to close when activated by a fusible link or detector.

When detection occurs the result is the mechanical or electromagnetic release of the door s. We can use a relay to drop power to the electric lock or use an ip device that drops power using the network connection or add a power control box that drops power when the fire alarm system detects a fire. Automatic doors according to nfpa 80 3 3 6 3 3 7 an automatic closing door is a door that is normally held in the open position but closes when the automatic closing device is activated.