Bosch FAS-420-TM - Water Separator for Humid Areas

26 en | Technical Specifications FAS-420-TM Aspirating Smoke Detector
F.01U.088.878 | 4.1 | 2010.11 Operation Guide Bosch Sicherheitssysteme GmbH
The air-return pipe is installed in the conical pipe connection for the air return of the FAS-420-
TM (see Figure 2.22). It fits perfectly in the connection and guarantees a firm hold. When
using fire source identification, it is not permitted to connect an air-return pipe.
2.6.5 Water Separator for Humid Areas
If the smoke aspiration system is operated in environments where condensate can form in the
aspiration system, a water separator is used. Condensate can form with sharp temperature
fluctuations and in areas where fresh air is monitored.For areas with extremely high humidity,
the FAS-ASD-WS Water Separator can be used, for example.
The FAS-ASD-WS Water Separator is integrated at the lowest point in the pipe system
downstream of the air filter and the aspirating smoke detector. The 45° pipe elbow permits
optimum distance from the wall (see Figure 2.23).
Figure 2.22 FAS-420-TM with air-return pipe
1 Smoke aspiration pipe
2 Air-return pipe
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