Detection In The Bypass; Air Filter; Installing The Air Filter Box - Bosch FCS‑320‑TM Series Operation Manual

68 en | Installation of the pipe system
Positioning the air sampling opening depending on air
speed
6.4.2

Detection in the Bypass

For details on connecting the air return, please see Air-return pipe, page 69 .
Positioning the air-return pipe – example with an air-
conditioning duct (bypass)
For FCS-320-TM planning in these applications, see Planning for forced airflow, page 47 .
6.5

Air filter

6.5.1

Installing the Air Filter Box

Figure 6.1: Boring distances of holes in base of FAS‑ASD‑WS air filter box
Filter box
–
–
2020.04 | 2.1 | F.01U.130.928
1
2 3
1
3
90
To use the filter box in the pipe system, use the two PG29 filter screw connections
supplied.
Install these cable glands in precisely the same way as for the pipe adapter, for example.
2
1/2 b
b
4
Operation guide
Conventional Aspiration smoke detector
1 Aspiration pipe with air
sampling openings
2 Exhaust speed < 0.5 m/s
3 Exhaust speed > 0.5 m/s
1 Air-conditioning duct
2 Duct adapter
3 Aspiration
4 Air-return Pipe
b Width of air-conditioning duct
Bosch Sicherheitssysteme GmbH