Operation of the Control Panel Operation of Special System Timers, Presignal, and PAS
36 NFS-3030 Operating P/N 51344:C 11/4/03
Operation of Special System Timers, Presignal, and PAS
System (Panel) Timers
There are user-programmable time delays for four specific functions: Alarm Verification, AC Fail,
Silence Inhibit, and Auto Silence. Refer to this panel’s programming manual for instructions on
viewing or modifying these values. (They may be viewed only in programming mode.)
Alarm Verification Timer (
VERIFY TIME)
A timer that directs the control panel to ignore a fire alarm for a smoke detector, programmed for
Alarm Verification, while the Alarm Verification Timer is counting. The timer value can be set
from 0-60 seconds, and may not exceed 30 seconds for ULC installations. Table 2 contains a
summary of how the Alarm Verification Timer works.
Table 2 Alarm Verification Timer Operation
AC Fail Delay Timer
This timer delays the time from the start of AC failure to when the trouble is reported. The timer
value may be set to 0, or from 6-12 hours. The onboard trouble relay and municipal box output will
activate when the countdown is complete. Note that this panel notifies the central station
communicator as soon as AC failure occurs, and the central station communicator follows its own
programmed schedule for reporting the failure.
Silence Inhibit Timer
This timer disables the
SIGNAL SILENCE and RESET key function for the programmed time (MM:SS
seconds) when a fire alarm occurs. A Silence Inhibit Timer starts at the first fire alarm. A panel
reset is required to re-enable this timer. It can be set with a value from 0 (the timer is disabled) to 5
minutes.
Auto Silence Timer
This timer functions like pressing the
SIGNAL SILENCE key. When the Auto Silence Timer reaches its
programmed value (0, 10 minutes, 15 or 20 minutes, with the setting = 20 for Canadian installations),
the control panel automatically shuts off all active outputs programmed as silenceable. To restart the
Auto Silence Timer, press the
DRILL key.
Presignal
Presignal is a feature that initially delays activation of outputs with ZF0 in their zone map until the
Presignal timer has expired. This feature allows for the initial sounding of outputs only in specific
areas, monitored by qualified personnel. To participate in Presignal, inputs and outputs must
include Special Zone ZF0 in their zone map. The Presignal timer is programmed to a value from 60
to 180 seconds.
If this event occurs The control panel does this
A second fire alarm occurs while the
Alarm Verification Timer is counting
Ignores the Alarm Verification Timer
The Alarm Verification Timer elapses
and a fire alarm still exists
Activates the fire alarm
The Alarm Verification Timer expires
and a fire alarm no longer exists
The control panel returns to normal operation and
increments the verification counter
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