14
en | Technical Specifications
FCS-320-TM Aspirating Smoke Detector
F.01U.130.928 | 1.0 | 2009.11
Operation Guide
Bosch Sicherheitssysteme GmbH
Figure 2.6
Phase 2: Early fire detection
–
Phase 3
When the alarm is signaled, once the configurable pre-alarm threshold is reached, the
aspiration fan switches off and a second fan blows all smoke particles out of the pipe
system in the opposite direction.
Figure 2.7
Phase 3: Blowing out
–
Phase 4
Once the pipe system has been blown out, the direction of flow is reversed again and the
time required for the smoke particles to penetrate into the detection unit is measured.
On the basis of this time, the location of the smoke source can be accurately traced to
one of the monitored areas.
E
D
C
B
A
FAS-420-TM
series
E
D
C
B
A
E
D
C
B
A
FAS-420-TM
series
Summary of Contents for FCS-320-TM
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