Fire-Lite MS-10UD Series FACP - Manual (Page 103)

MS-5UD & MS-10UD Series Manual — P/N 52626:C4 3/7/2014 103
Positive Alarm Sequence Operating Instructions
 outputs (NACs) of associated zones will be inhibited from activating for a user programmed
time delay of up to three minutes
 second alarm occurring anytime during the time delay will cause immediate activation of all
associated outputs
Presignal operation requires the approval of the local Authority Having Jurisdiction.
4.16 Positive Alarm Sequence
PAS (Positive Alarm Sequence) option will program a smoke detector to delay panel activation
(including alarm relay and communicator) for a period of 15 seconds.
When a detector triggers an alarm, the onboard piezo sounds immediately, but the NACs are pre-
vented from activating for 15 seconds. This inhibit time is factory set and cannot be changed.
Pressing the Alarm Silence or Acknowledge/Step key during the 15 second inhibit time will silence
the piezo sounder and start a timer which prevents activation of NACs for an additional time dura-
tion which can be user programmed for up to three minutes. After the programmed delay, the
NACs will activate if the source of the alarm is not cleared. Note that if a second alarm occurs
during either time delay, the alarm will be processed immediately, causing activation of the NACs.
The events which occur upon PAS activation are as follows:
 onboard piezo sounds immediately
 control panel LCD display will indicate a PAS event and the active zone
 annunciators (if enabled) will sound the local piezo, and pulse the alarm LED and zone LED
 outputs (NACs) of associated zones will be inhibited from activating for a factory set
duration of 15 seconds
 pressing the Alarm Silence or Acknowledge/Step key will start a timer which inhibits output
activation for additional time delay of up to three minutes which is user programmable
 second alarm occurring anytime during either time delay will cause immediate activation of
all associated outputs
PAS operation requires the approval of the local Authority Having Jurisdiction.
4.17 Special System Timers
4.17.1 Silence Inhibit Timer
This option, if selected, prevents the Alarm Silenced and Reset keys from functioning for 60 sec-
onds 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.
4.17.2 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.