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Operating Instructions
166 MS-9200UDLS PN 52750:E1 01/27/09
4.20 Special System Timers
4.20.1 Silence Inhibit Timer
This option, if selected, prevents the Alarm Silence key from functioning for 60 seconds
following an alarm. A new alarm during the initial 60 second period will not
cause the
timer to restart with a new 60 seconds. Silence Inhibit operation requires the approval
of the local Authority Having Jurisdiction.
4.20.2 Autosilence Timer
If Autosilence is selected, the notification appliances, programmed as silenceable, will
automatically be silenced after a programmable duration of from 5 to 30 minutes.
Pressing the Drill key will restart the timer. Autosilence operation requires the
approval of the local Authority Having Jurisdiction.
4.20.3 Trouble Reminder
If selected, this feature causes a reminding ‘beep’ every 15 seconds during an alarm
(after the Alarm Silence key is pressed) and every two minutes during a trouble
condition (after the Acknowledge/Step or Alarm Silence key is pressed). The ‘beeps’
from the onboard piezo sounder will occur until the alarm or fault is cleared.
Note that if the trouble is not cleared within 24 hours, the piezo will resound, indicating
that the trouble condition still exists.
4.20.4 Waterflow Retard Timer
If selected, this option will delay the activation of a waterflow type alarm for a
programmable time duration from 1 to 90 seconds. This delay is in addition to any time
delay inherent in the waterflow device. This feature requires the approval of the local
Authority Having Jurisdiction.
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 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 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 73 seconds of the first alarm (13 second retard plus 60
second confirmation), the timer resets and the panel is ready to verify any new detector
alarms which may occur. The following is a graphic representation of Alarm
Verification.