75
•
If the Signal Silence LED is on, it turns off and the Auto Signal Silence timer, if
configured, is restarted
•
The General Alarm Cancel LED if on, turns off
Alarm inputs are latching: they remain active until system reset.
8.5
Pre-Signal Operation
To configure the panel for pre-signal, all alarm inputs must be correlated to one NAC circuit
that is wired to a Notification Appliance in the Control Room that is constantly monitored by an
Operator. Using the FX-4000N Configurator, “Subsequent Alarm” in “Common System Status”
must be correlated to turn on the Remaining NAC circuits in the system. To confirm the alarm
(i.e. subsequent alarm) the operator can press the “General Alarm” button on the panel or
activate a Manual Station in the Control Room.
8.6
Circuit Types
The term
circuits
refers to an actual electrical interface, either initiating (detection) or
indicating (signal). The term
zone
is a logical concept for a fire alarm protected area, and will
consist of at least one circuit. Often the terms zone and circuit are used interchangeably, but in
this manual the term circuit is used.
8.6.1 Initiating (Detection) Circuit Type
Note:
If the system is configured for correlations, any second stage / general alarm
condition activates all NACs whether they are correlated or not.
Note:
Pre-Signal is not permitted to be used in Canada, unless approved by the AHJ.
Initiating (Detection) Circuit
Type
Description
Non-Verified Alarm
This is a "normal" type of alarm which may have pull stations, smoke detectors, or heat
detectors attached. Any activation of these devices will immediately result in an alarm
condition in the fire alarm control panel. An alarm condition causes the associated
circuit Status LED and the Common Alarm LED to illuminate red.
Verified Alarm
These alarms are verified by a reset and timing procedure, and may have Manual
Stations, smoke detectors attached. Any activation of Manual Stations will result in an
alarm condition in the fire alarm control panel within four seconds. Smoke detectors will
be verified for a real alarm within 60 seconds depending upon the start-up time of the
smoke detectors being used. If four seconds is too long a response time for pull
stations, then they should be wired separately on a non-verified alarm circuit. An alarm
condition causes the associated circuit Status LED and the Common Alarm LED to
illuminate red. Verified Alarm is not permitted for heat detectors, 4-wire smoke detectors
and smoke detectors with built-in alarm verification. Refer to Appendix D Alarm
Verification for details.
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