Technical/Programming Manual
FT1020G3 Rev 2.2.1
116
The occupant has 30 seconds to press the button on the AAM (acknowledgement time)
which provides the occupant with up to 90 seconds to investigate the alarm and clear up
the smoke.
The alarm investigation period of 90 seconds is considered appropriate for protected areas
with normal levels of ventilation or accessibility. The investigating period is adjustable 0-9
minutes to satisfy other applications. The acknowledgement period is also adjustable 0-
120 seconds.
A red LED on the front cover indicates that the acknowledgement button has been pressed;
it remains illuminated until the investigation period expires.
A momentary action switch is provided to acknowledge the alarm and silence the sounder
base 3379. Pressing the button during the investigation period (while LED is on) will not
extend or re-start the timer. The following flow chart explains the sequence of the AAF
process.
Figure 43 Alarm Acknowledgement Facility (AAF) flow chart
During the AAF Process, an AAF alarm will be indicated in the CIE
display ….
…. during the
A
cknowledgement
P
eriod (
AP
):
AAF zone xx, activated
…. during the
I
nvestigation
P
eriod (
I
P):
AAF zone xx, investigation in progress
If more than one AAF zones are activated, only the first one is shown in the display.
Buzzer ON
Detector LED ON
AAM/LAAU LED
ON
Detector LED OFF
AAM/LAAU LED
OFF
AAM/LAAU
LED OFF
AAM
button
pressed?
