Alarm Acknowledgement Module

The Alarm Acknowledgement Facility (AAF) enables the occupant to control the smoke detection inside the sole occupancy unit within a pre-determined time delay. The Alarm Acknowledgement Module (AAM) is used in conjunction with sounder base 3379. The AAF provides the occupant with a facility to avoid the unwanted alarms within the occupancy, e.g. cooking fumes. smoking, aerosol spray and steams. Each AAM is configured as an AAF zone which can include up to 5 smoke detectors. If the analogue value of one or more smoke detectors in an AAF zone reaches the level of alarm, the alarm acknowledgement process starts. The occupant has 30 seconds to press the button (acknowledgement time) which provides the occupant with up to 90 seconds to investigate the alarm and clear up the smoke. The alarm investigation period of 90 seconds is considered appropriate for protected areas with normal levels of ventilation or accessibility. The investigating period is adjustable 1-9 minutes to satisfy other applications. The acknowledgement period also is adjustable 10-120 seconds. Each AAF Zone consists of one or up to five analogue smoke detectors (4401/4400), one or up to five sounder bases 3379 and one AAM, all connected to same COM loop.