Three-Way Tap - Bosch FCS-320-TP2 Operation Manuals

Aspirating Smoke Detector
6.7

Three-way Tap

Installing the three-way tap
The three-way tap is required to blow out the pipe system with blast air (as a preference) or
compressed air. (Compressed air is compressed, non-purified and humid ambient air. Blast
air, on the other hand, is purified and dehumidified air. If the FCS-320 and pipe system are
located in areas with temperatures below freezing, blast air is to be used for blowing out.)
The aspirating smoke detector and the downstream pipe system accessory components (e.g.
air filter) must not and cannot be blown-out.
A check valve for relieving pressure from the pipe system must be fitted to the end of each
pipe branch. The check valve prevents damage to the air sampling openings and prevents dirt
deposits from being blown through the pipe system.
To prevent aspiration reducing film sheets in deep-freeze areas from tearing, it is advisable to
use special deep-freeze aspiration reductions. Check valve and deep-freeze aspiration
reductions are available on separate order.
Connections
Fasten the three-way tap using the transition screw connections in the pipe system.
When installing, note the assignment of the connections:
–
–
–
Notice!
A single blowing-out process can be completed within 50 seconds. If within this time the unit
is still connected to the pipe system, the malfunction message "airflow sensor module
malfunctioning" will not be evaluated. If the blowing-out process has to be repeated (steps 1
to 3), wait at least 120 s.
The manual blowing-out process on the pipe system is carried out as follows:
Bosch Sicherheitssysteme GmbH
1
C
B
A
C
1
B
A
C
2
B
A
C
3
B
A
Install the aspiration pipe system on connection C.
Install the FCS-320 on connection A.
Attach the blast air supply (blast or mobile blowing-out system) to connection B of the
three-way tap.
2
3
4
Operation Guide
Installation of the Pipe System | en
1 Blast air/compressed air
connection
2 Pipe system connection
3 Aspirating smoke detector
connection
4 Air filter (optional)
2018.04 | 2.0 | F.01U.130.926
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