The use of delayed egress systems has increased ever since the technology was developed and then approved by code writing authorities. Security and door control continue to gain popularity as the public’s awareness matures. The benefits of security, safety and loss control brought about by utilizing access control systems and special locking arrangements are being realized on a large scale. In conjunction, the variety of delayed egress products is also growing, with many different models to suit the essentially infinite variety of installation environments.
Along with the increase in the use of special locking arrangements, the number of building codes addressing these installations have also increased. As is often the case, different code writers specify different requirements. The installing dealer integrator therefore, must determine the requirements the authority having jurisdiction will be enforcing, before selecting and installing delayed egress.
A recently performed service call on a delayed egress system installed on the shipping and receiving door at a large supermarket is a study in what you can expect when servicing these units. The system was an Alarm Lock 715 which had pretty much been knocked around by forklifts smashing into it—yet it continued to lock, unlock, and generate alarms!
The system was installed with no outside trim because there is no entry into the area from the outside. If the door is to be opened, the employees do it from within. The system was keyed to arm/disarm by the manager’s key and a separate alarm keypad located next to the door.
Additionally, the 715 was connected to the premises fire alarm. If the fire control panel went into alarm, the 715 was set up not to unlock but to simply cancel the exit delay. Therefore if an individual wished to egress, the door would open immediately. If someone attempted to egress without first disarming the 715, the built-in sounder sounded and the alarm system would notify the front desk.
During the service call it was determined that the circuit from the FACP (fire alarm control panel) to the alarm lock was in constant alarm condition. The 715 therefore, was not delaying egress as the system was designed. Additionally, the required signage was absent from the door. The facilities department was notified of the FACP system trouble and the required signage was installed before departing.
The Alarm Lock 715 is a non-handed, delayed egress electronic exit door locking system. The unit is somewhat unique in that it incorporates a deadbolt and also utilizes control circuitry mounted off the door on the wall adjacent to the door. It is more or less an evolved version of the legendary paddle-actuated stainless steel deadbolt units that made Alarm Lock a legend.
The 715 adds the delayed egress feature, extends the paddle to a bar across the door, uses line voltage power supply as well as a battery backup, and provides the unique cam latch. Arming is accomplished by actuating the deadbolt using a 1 1/8” rim cylinder. An optional cylinder may be installed on the exterior of the door so the unit may be armed/disarmed from either side.
Arming the unit extends the deadbolt into the rim strike and physically locks the door. The 715 also engages the door with a cam latch. The 715 provides the ability to connect to the premises fire alarm. When the bar on the 715 is depressed, a loud alarm sounds (95dB @ 10’), and after 15 seconds the door may be opened for egress. In the event of a fire alarm, the door may be opened instantly without the 15-second delay.
The 715 also provides terminals which can be connected to smoke detectors. The audible alarm may be configured to sound continuously until the 715 is reset with a key or to be automatically shut down after 2 minutes. The door must be manually relocked with a key regardless of the audible alarm setting.