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50
en | Planning
I-pipe system
Air sampling
opening
∅ air sampling
A
opening in mm
a
B
C
D
E
F
G
H
I
J
a
Punch diameter of the aspiration reducing film sheet
I-pipe system activation thresholds
Activation
Number of openings
thresholds
1 obstructed opening
2 obstructed openings
3 obstructed openings
4 obstructed openings
5 obstructed openings
... will be recognized by the setting level x
— not possible, 0 not practical
Example
If 3 of a total of 7 air sampling openings are found to be obstructed, the switch for setting the
airflow monitoring should be set to level III.
Notice!
When planning in accordance with EN 54‑20 or ISO 7240-20, level I or II must always be set
for airflow monitoring.
2018.04 | 2.0 | F.01U.130.926
Number of air sampling openings
2
3
4
6.0
5.0
4.2
6.8
5.2
4.4
-
5.2
4.6
-
-
4.6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2
III
0
0
0
0
Operation Guide
5
6
7
3.8
3.2
3.0
3.8
3.2
3.0
4.0
3.6
3.0
4.0
3.6
3.4
4.4
4.0
3.4
-
4.0
3.8
-
-
3.8
-
-
-
-
-
-
-
-
-
3
4
5
6
III
II
I
I
0
III
III
II
0
0
0
III
0
0
0
0
0
0
0
0
Aspirating Smoke Detector
8
9
10
2.5
2.5
2.0
2.5
2.5
2.0
3.0
2.5
2.5
3.0
3.0
2.5
3.4
3.0
3.0
3.4
3.4
3.0
3.8
3.4
3.4
3.8
3.8
3.4
-
3.8
3.6
-
-
3.6
7
8
9
10
—
—
—
—
I
I
—
—
III
II
I
I
0
III
II
I
0
0
0
II
Bosch Sicherheitssysteme GmbH
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