52
en | Planning
Aspirating Smoke Detector
2018.04 | 2.0 | F.01U.130.926
Operation Guide
Bosch Sicherheitssysteme GmbH
U-pipe system activation thresholds per pipe system
Activation
thresholds
Number of openings
2
4
6
8
10
12
14
1 obstructed opening
III
II
I
—
—
—
—
2 obstructed openings
0
III
II
I
—
—
—
3 obstructed openings
0
0
III
II
I
—
—
4 obstructed openings
0
0
0
III
II
I
—
5 obstructed openings
0
0
0
0
III
II
I
6 obstructed openings
0
0
0
0
0
III
II
… will be recognized by the setting level x
— not possible, 0 not practical
Example
If 3 of a total of 10
air sampling openings are found to be obstructed, the switch for setting
the airflow monitoring should be set to level I.
Notice!
When planning in accordance with EN 54‑20 or ISO 7240-20, level I or II must always be set
for airflow monitoring.
M-pipe system - single-hole monitoring
1 pipe system
FCS-320-TP1
FCS-320-TT1
2 pipe systems
FCS-320-TP2
FCS-320-TT2
d
d
A
B
C
D
A
B
C
D
FAS / FCS
FAS / FCS
M-pipe system for space protection
Limiting values
Min. distance FCS-320 – last T-fitting
4
m
Содержание FAS-420
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