26
Initiating (Detection) Circuit Types
Circuit Type
Description
Non-Veri
fi
ed 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
fi
re alarm
control panel. An alarm condition causes the associated circuit Status LED and the Common Alarm
LED to illuminate red.
Veri
fi
ed Alarm
These alarms are veri
fi
ed by a reset and timing procedure, and may have pull stations, smoke detectors,
or heat detectors attached. Any activation of pull stations or heat detectors will result in an alarm
condition in the
fi
re alarm control panel within four seconds. Smoke detectors will be veri
fi
ed for a real
alarm within 60 seconds depending upon the startup 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-
veri
fi
ed alarm circuit. An alarm condition causes the associated circuit Status LED and the Common
Alarm LED to illuminate red.
Any subsequent alarms on other circuits (whether veri
fi
ed or not) is deemed a “veri
fi
cation” on the
fi
rst
activation of a veri
fi
ed circuit and will result in immediate panel alarm, bypassing any remaining
veri
fi
cation time.
Any open troubles that occur on a Veri
fi
ed Alarm circuit after initial activation will cause that circuit to
alarm immediately. This is a fail-safe operation that handles any
fi
re induced wiring faults.
Water-Flow Alarm
An alarm for water-
fl
ow sensors. These alarms are identical to normal non-veri
fi
ed alarms except that
any NAC circuits programmed to these circuits (all are by default) are non-silenceable. Also, if
water
fl
ow retard operation is enabled, then these circuits are sampled every one second; if ten samples
are active within any 15 second interval, the water-
fl
ow alarm is con
fi
rmed and processed. An alarm
condition causes the associated circuit Status LED and the Common Alarm LED to illuminate red.
Note: Do not use the retard operation with any external retarding device; maximum retard may
not exceed 90 seconds.
Non-Latching
Supervisory
These alarms are for supervisory devices. An activation on these circuits will cause the Circuit Status
LED and the Common Supervisory LED to illuminate amber. The buzzer will sound at fast buzzer rate.
If the circuit activation is removed, the supervisory condition will clear (so long as there are no other
supervisory conditions in the system) and the circuit Status LED will extinguish.
Latching Supervisory
These alarms are for supervisory devices. An activation on these circuits will cause the Circuit Status
LED and the Common Supervisory LED to illuminate amber. The buzzer will sound continuously. If
the circuit activation is removed, the Supervisory condition will
not
clear. Installations according to
ULC-S524 should be set for Latching Supervisory.
