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Operating Instructions
4.20.5 Alarm Verification (None or One Minute)
If alarm verification is selected, an addressable smoke detector's alarm is ignored for a retard time
of 23 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 60 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 83 seconds of the first alarm (23 second retard plus 60 second confirmation),
the timer resets and the panel is ready to verify any new detector alarms which may occur.
0 sec.
Detector Alarm Verification
(Retard + Confirmation)
Alarm Ignored
Detector Goes Into Alarm
Different Detector Alarms
During First Detector's
Verification Period
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 all 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.
158
23 sec.
RETARD
Control Panel Processes Alarm if Same Detector is Still in Alarm
Control Panel Immediately Processes Alarm
CONFIRMATION (60 seconds)
MS-9050UD PN 52413:C 01/23/08
83 sec.
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