Special System Timers 4. Operation
 AFP-100/AFP-100E Instruction PN 51010:C1 02/06/2002
67
Special System Timers
Silence Inhibit Timer (None or 60 Seconds)
This option, if selected, prevents the 
ALARM
 
SILENCE
 key from functioning for 60 seconds after an 
alarm.  
Note: Silence Inhibit operation requires the approval of the local Authority Having Jurisdiction.
Auto-silence Timer (None or 10 Minutes)
If Auto-silence is selected, the notification appliances are silenced automatically after 10 minutes of 
activation.  Pressing the 
DRILL
 key will restart the timer with a new 10 minutes.
Note: Auto-silence operation requires the approval of the local Authority Having Jurisdiction.
Trouble Reminder
If selected, this feature causes a reminding “beep” tone every 15 seconds during an alarm (after the 
Silence key is pressed) and every 2 minutes during a trouble condition (after the 
ACKNOWLEDGE
/
STEP
 
key or 
ALARM
 
SILENCE
 key is pressed).  The  “beep” tones from the panel sounder will occur until the 
alarm or fault is cleared.
Alarm Verification (None or 73 Seconds)
If alarm verification is selected, an addressable smoke detector's alarm is ignored for a Retard period of 
13 seconds and the detector's alarm condition is automatically reset.  There will be no alarm indication 
at the control panel during the Retard period.  A Confirmation period of 1 minute follows, during which 
a subsequent alarm from the same detector will cause the control panel to immediately activate the 
appropriate outputs and indicate the alarm condition at the control panel.  If a different detector alarms 
any time during the first detector's verification period, the control panel will immediately activate all 
appropriate outputs and indicate the alarm condition at the control panel.  If no additional detector 
alarms occur within 73 seconds of the first alarm (13 second retard plus 1 minute confirmation), the 
timer resets and the control panel is ready to verify any new detector alarms which may occur.
Figure 23  Alarm Verification Timing
73 sec.
13 sec.
0 sec.
CONFIRMATION (1 Minute)
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
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