Siemens FDA241 Technical Manual page 26

Structure and function
3
Setup
Alarming indicator
Smoke indicator
Yellow LED
Alarm level
Green LED
Alarm level
1
Inspect
Red LED
Alarm level
Prealarm
Red LED
Alarm level
Fire 1
Red LED
Alarm level
Fire 2
Red LED
26
Building Technologies
Fire Safety
The aspirating smoke detector's current alarm status is indicated by LEDs in the smoke indicator
(bar graph indicator).
Number of LEDs lighting up and their meaning
1...5 'Smoke low'
6...9 'Inspect'
10...12 'Prealarm'
13...14 'Fire 1'
The green LED lights up if the level of smoke is minimal.
At the same time, the bottommost 1 to 5 yellow LEDs may indicate minor deviations.
The red LED lights up at the 'Inspect' alarm level.
At the same time, the bottommost 6 to 9 yellow LEDs light up.
The red LED lights up at the 'Prealarm' alarm level.
At the same time, the bottommost 10 to 12 yellow LEDs light up.
The red LED lights up at the 'Fire 1' alarm level.
At the same time, the bottommost 13 to 14 yellow LEDs light up.
The red LED lights up at the 'Fire 2' alarm level.
At the same time, the 15 yellow LEDs light up.
15 'Fire 2'
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2015-09-29