U-Pipe System - Bosch FCS‑320‑TM Series Operation Manual

38 en | Planning
I‑pipe system
Ø of air sampling
openings in mm
a
Punch diameter of the aspiration reducing film sheet
I pipe system activation thresholds
I‑pipe system
Activation threshold
0 not practical
Example:
If 2 of a total of 5 air sampling openings are found to be obstructed, airflow monitoring must
be set to ± 20% using the FAS‑ASD‑DIAG Diagnostic Software.
Notice!
When planning in accordance with EN 54‑20 or ISO 7240-20, airflow monitoring must always
be set to 20%.
4.7.2

U-pipe system

1 pipe system
FCS-320-TM
FCS-320-TM-R
Min. distance FCS-320-TM - 1st air sampling opening
Max. distance FCS-320-TM - 1st air sampling opening
Max. branch length
Max. total pipe length per pipe system
2020.04 | 2.1 | F.01U.130.928
Air sampling
opening
A
a
B
C
D
E
Number of obstructed air
sampling openings
1 obstructed opening
2 obstructed openings
3 obstructed openings
4 obstructed openings
5 obstructed openings
FAS / FCS
A
U-pipe system for space protection
Operation guide
Conventional Aspiration smoke detector
Number of air sampling openings
1 2 3
6.8 4.6 4.0
- 5.0 4.2
- - 4.4
- - -
- - -
Number of air sampling openings
2 3
± 30% ± 20%
0 0
0 0
0 0
0 0
B C D
4 5
3.4 3.0
3.6 3.2
3.8 3.4
4.0 3.6
- 3.8
4 5
± 15% ± 10%
± 30% ± 20%
0 0
0 0
0 0
2 m
20 m
25 m
Bosch Sicherheitssysteme GmbH