11
H
eat
D
etector
tI 150
Operating Modes
Normal mode
The heat detector is in Normal mode when operating at temperatures below the thresh-
old temperature of 54°Celsius.
The signal LED (4) flashes every 32 seconds. No acoustic alert signal is issued.
Alarm mode
If the temperature at the heat detector rises above the limit value of 54°Celsius, the heat
detector triggers an alarm.
The signal LED (4) flashes in the sequence (signal (0.5 s), pause (0.5 s), signal (0.5 s),
pause (0.5 s), signal (0.5 s), pause (1.5 s)). Acoustic signals are issued coinciding with the
flashing signals.
Each alarm is activated for 10 minutes. After 10 minutes, the alarm is either extended or
ended automatically, depending on the temperature.
The acoustic alarm can be switched to Mute mode by pressing the Test button (5). When
Mute mode is activated, the signal LED (4) flashes for approx. 10 minutes at intervals of 8