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Special System Timers
4.17.2 Autosilence Timer
If Autosilence is selected, the notification appliances, programmed as silenceable, will automati-
cally 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.
4.17.3 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 Acknowl-
edge/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 Trouble Reminder feature is not selected and the trouble is not cleared within 24 hours,
the piezo will resound, indicating that the trouble condition still exists.
4.17.4 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.
4.17.5 Alarm Verification (None or One Minute)
If alarm verification is selected, a smoke detector activation will cause the FACP to reset the detec-
tor by removing power for 6 seconds. Power is reapplied and a 17 second retard period begins
which allows all detectors to stabilize. If no other detectors alarm, there will be no alarm indication
at the FACP during the 23 second Reset/Retard period. A Confirmation period of 60 seconds fol-
lows, 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
zone alarms any time during the first detector's Retard & Confirmation period, the panel will imme-
diately activate all appropriate outputs and indicate the alarm condition at the FACP. If no addi-
tional detector alarms occur within 83 seconds of the first alarm (23 second Reset/Retard plus 60
second Confirmation), the timer resets and the panel is ready to verify any new detector alarms
which may occur.
0 sec.
RESET
Detector Alarm
Verification
(Reset/Retard +
Confirmation)
Detector Goes Into Alarm
Different Detector Alarms
During First Detector's
Verification Period
NOTE: Alarm Verification is available only for smoke detectors.
MS-5UD & MS-10UD Series Manual — P/N 52626:C2 1/24/2012
23 sec.
6 sec.
RETARD
Alarm Ignored
Control Panel Processes Alarm if Same Detector is Still in Alarm
Control Panel Immediately Processes Alarm
CONFIRMATION (60 seconds)
Operating Instructions
83 sec.
119
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