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activated in FT1020G3, otherwise nothing will happen until the next time the zone is in "fire
alarm state" and so on.
17.12
Alert Annunciation
In some installations the Alert Annunciation function can be used to avoid false alarms to
the fire brigade. A time channel can turn on/off this function.
Trained personnel on site are required to locate the fire and take the correct actions
depending on whether a real fire exists.
Normally Analogue smoke detectors and zones with smoke detectors only, can be
programmed (via EBLWin) for alert annunciation. Heat detectors and manual call points
should not be programmed for Alert Annunciation. A manual call point can only activate the
AA function if there are no other fire alarms activated in the system i.e. the second fire
alarm will turn off the AA function
The AA function is normally turned on (enabled) during daytime working hours only. A time
channel is used to turn on/off (enable / disable) the AA function. When the AA function is
turned on (enabled), it is indicated by the LED Routing equipment "Fire brigade TX delay"
on the CIE front. Normally only one time channel is used for this function but two or more
channels can be used. The AA function can, as an alternative, be continuously "on".
Note: The AA function can be de-activated (turned off) manually via menu H2/B6 and
will remain off until turned on (normal) again via menu H2/B6.
Alert Annunciation function:
Indications, print-outs, actions, etc. for an AA alarm are the same as for a normal fire alarm
except the output "Fire alarm" for routing equipment (fire brigade TX) in each CIE that will
not be activated directly.
The AA alarm has to be acknowledged within an acknowledgement time and the AA alarm
has to be reset within an investigation time, otherwise the output(s) for routing equipment
(fire brigade TX) will be activated.
During the acknowledgement and investigation times:
If a fire alarm is activated by a detector / zone not programmed for Alert
Annunciation or if fire alarm is activated by a manual call point, the output(s) for
routing equipment (fire brigade TX) will be activated.
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This is valid even if "Multiple alarms within same zone" is selected (via EBLWin).
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Note: Programmable outputs type "Fire brigade TX" will however be activated if not the following is added to the control
expression: AND NOT Alert Annunciation Activated.
and the "Fire brigade TX" output will be activated
Figure 41 Alert Annunciation function flow chart.
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Technical/Programming Manual
FT1020G3 Rev 2.2.1
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