Installing The Unit - Bosch FAS-420-TM Operation Manual

FAS-420-TM Aspirating Smoke Detector
NOTICE!
It is not permitted to use different operating modes in one loop/stub/T-tap next to each other.
4.3

Installing the Unit

NOTICE!
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–
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The aspirating smoke detector can be installed with the aspiration device pointing upwards or
downwards. Turn the detector module in the cover by 180° as applicable.
A
Figure 4.2 FAS-420-TM installation
Aspiration from above
Ensure that the air outlet of the aspirating smoke detector is not obstructed. Maintain a
distance of at least 10 cm between the air outlet of the FAS-420-TM and the surrounding
objects (e.g. wall).
Aspiration from below
If the air-return pipe is directed upwards, it must be guaranteed that no foreign bodies or
dripping water can penetrate the air return. You should therefore use a short, downward
angled pipe (see Figure 4.2).
Turning the detector module in the cover
In order to turn the detector module in the cover of the FAS-420-TM detection unit by 180°,
proceed as follows:
1.
2.
Bosch Sicherheitssysteme GmbH
When selecting the installation location, ensure that the unit displays are easily visible.
Remember when planning that the unit fans generate a noise level of approx. 40 dB(A).
In order to prevent damage to the device, ensure that the installation location is not in a
door opening area.
1
≥ 10 cm
Remove the four screws (see Figure 4.3 for positions).
Now turn the cover and fasten the detector module again with the four screws.
Operation Guide
Installing the Aspirating Smoke Detector | en
B
2
1
A Aspiration device
upwards
≥ 10 cm
B Aspiration device
downwards with air outlet
opening upwards
1 Smoke aspiration pipe
2 Air-return pipe
F.01U.088.878 | 4.1 | 2010.11
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