Filter
Top Products
2SHUDWLQJ,QVWUXFWLRQV :DONWHVW
8QLPRGH31&
4.20.5 Alarm Verification (None or Two Minutes)
If alarm verification is selected, an addressable smoke detector's alarm is ignored for a
retard time of 13 seconds and the detector's alarm condition is automatically reset. There
will be no alarm indication at the FACP during the Retard period. A confirmation period
of one minute and 47 seconds follows, during which a subsequent alarm from the same
detector will cause the panel to immediately activate the appropriate outputs and indicate
the alarm condition at the FACP. If a different detector alarms any time during the first
detector's verification period, the panel will immediately activate all appropriate outputs
and indicate the alarm condition at the FACP. If no additional detector alarms occur
within two minutes of the first alarm (13 second retard plus one minute and 47 second
confirmation), the timer resets and the panel is ready to verify any new detector alarms
which may occur.
Note: Alarm Verification is available only for addressable smoke detectors, not
conventional smoke detectors.
4.21 Walktest
Walktest is a feature which allows one person to test the fire alarm system. An audible
walktest will momentarily sound the Notification Appliance Circuits in the building and
store the walktest information in a file at the panel. A silent walktest will not sound the
NACs but will store the walktest information in a file which can be viewed at the panel.
Disabled NAC devices will not activate during walktest.
Alarm/Shorted Condition
When in audible Walktest, the panel responds to each new alarm and activates its
programmed control outputs for four seconds, if those outputs have been programmed for
silenceable activation. It also stores each alarm in the walktest history file which can be
sent to an optional printer. The stored display will be the same as if the device actually
activated except the colon (:) in the time stamp is replaced with an asterisk (*).
Open Condition
Addressable devices as well as both main circuit board NACs are monitored for fault
conditions during Walktest mode. When a new trouble condition occurs, the FACP will
activate all NACs and control modules programmed for Walktest, then shut them off after
eight seconds.
While in Walktest, the trouble relay is activated and the system Trouble LED flashes (as in
all of the Program and status change operations). The alarm relay is not activated.
120 sec.
13 sec.
0 sec.
CONFIRMATION
RETARD
Alarm Ignored Control Panel Processes Alarm if Same Detector is Still in Alarm
Control Panel Immediately Processes Alarm
Detector Alarm Verification
(Retard + Confirmation)
Detector Goes Into Alarm
Different Detector Alarms
During First Detector's
Verification Period