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During the Acknowledgement Period (10-120 sec.), the following information (a list if many)
is shown in the FDCIE display
During the Investigation Period (normally 0-9 min.), the following information is shown on
the FT128 display:
See FT128 Technical / Programming Manual chapter "Local Alarm Acknowledgement
(LAA) for more information.
Note: The Local Alarm Acknowledgement Unit (4445) is the newer version of the
discontinued Alarm Acknowledgement Module (3340). In V2.2.0, the Australian AAFC
function has been moved to the obsoleted units and replaced by the LAA. The function
of AAFC and LAA are identical, only the wall control unit is different.
14.8
Quiet Alarm
Quiet alarm is an alarm type that can be programmed via EBLWin for an analogue smoke
detector. The quiet alarm is self-resetting alarm (non-latching), it is only displayed on the
LCD and does not activate any general alarm functions.
This feature is used in AS1668 supply air / stair pressurization fan control applications or
in residential units as a non-latching smoke alarm.
In AS1668 supply air fan applications, the type "Quiet alarm" is used to set the duct
detector to be non-latching and resets automatically after the post timing
this can be configured in EBLWin.
A smoke detector (in duct probe) set in EBLWin to "Quiet alarm" is normally used in
conjunction AS1668 fan control module, it requires an I/O unit 3361 selected in EBLWin
as "3361 for fan".
In residential applications, an analogue smoke detector set to type "Quiet alarm" is used
in conjunction with the sounder base 3379 and LAAU 4445 (or ADF) as a local warning
inside the sole occupancy unit.
Quit alarm Indications and actions:
•
Detector LEDs are turned on (also a connected RIL).
•
LEDs "Fire" (L1) are blinking (0.4 / 0.4 sec.).
•
The buzzer sounds (0.8 / 5 sec.),
•
A Quiet alarm presentation (incl. a title "Quiet alarm") in the display.
46
When the discontinued Brooks AAM (3340) is used, the display shows "AAF zone, activated".
47
When the smoke clears from the smoke chamber, the detector resets after predetermined time (normally 60 sec.)
46
:
LAA zone zz, activated
dd-mm-yyyy hh:mm
LAA zone zz, investigation in progress
dd-mm-yyyy hh:mm
Quiet alarm detector ZZ/AA
(User definable text message)
56
Operation Manual
FT128 Rev 2.4
47
is completed,
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