Device Mounting; Measures For Reducing Operating Noise - Bosch FCS-320-TP2 Operation Manuals

Aspirating Smoke Detector
3.5.7

Device mounting

Mounting for FCS-320 series Aspirating Smoke Detector
The MT-1 unit mounting is used if a direct wall installation is not possible, e.g. installation on
racks.
3.5.8

Measures for Reducing Operating Noise

3
Absorption of the operating noises caused by airflows
Vibration absorbers
The fans of the aspirating smoke detectors cause a noise level of approx. 45 dB(A). Mounting
the FCS-320 onto vibration absorbers can effectively reduce noise transmission through the
installation elements. This results in a reduction in the noise level from 1 to 2 dB(A).
Additional operating noises may be caused by vibrations on the pipe system, which are
generated by the air flowing through it. This can be remedied by inserting a corrugated hose
(approx. 15 cm long) between pipe system and aspirating smoke detector to create a flexible
transition.
In noise-sensitive areas, the sound level can also be reduced by installing a piece of plastic
pipe approximately 100 mm long into the air outlet opening of the unit. This is done by
breaking out the pre-punched opening in the protective grille (e.g. using a small edge cutter).
Bosch Sicherheitssysteme GmbH
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Operation Guide
Technical Specifications | en
1 Horizontal installation
2 Vertical installation
1 Smoke aspiration pipe
2 Flexible hose
3 Fitting
4 Vibration absorbers
2018.04 | 2.0 | F.01U.130.926
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