Air Sampling Openings - Bosch FCS‑320‑TM Series Operation Manual

Conventional Aspiration smoke detector
where
ΔL
L
ΔT
δ
δPVC
δABS
For example, a temperature change of 10 °C on a 10 m-long PVC pipe causes a length change
of 8 mm.
Mounting clamps
PVC pipe clips are used as standard for installing the pipe system. These clips do not allow
any length extensions.
1
Overview of mounting clamps
6.2

Air Sampling Openings

1
Example of an aspiration boring with aspiration reducing
film sheet
Air sampling openings
Select the structure of the air sampling opening (aspiration boring) and the position in the
pipe system according to the project specification and taking into account the planning
guidelines.
Aspiration borings
–
–
–
Bosch Sicherheitssysteme GmbH
= Length change in [mm]
= Length of the pipe to be calculated in [m]
= Maximum temperature difference in [°C]
= Length change coefficient in [mm/m x °C]
= 0.08 mm/m x °C
= 0.101 mm/m x °C
2
4 2
Bore an aspiration boring with a 10 mm drill at a right angle to the pipe.
Deburr the boring carefully and remove chips.
Clean the boring area (across the entire span of the pipe) of grease and dust, e.g. with
Tangit cleaning agent.
Select the size of the aspiration reducing film sheet according to the specifications.
Glue the aspiration reducing film sheet to the opening.
Glue the marking tape over the aspiration reducing film sheet, in order to prevent the film
sheet from becoming detached.
1 Standard mounting clamps for 25 mm pipe
2 Plastic mounting clamps for 25 mm pipe,
3
for length changes and temperatures of up
to ‑40 °C
3 Spring steel clamp for 25 mm pipe, for
high-rise warehouses and temperatures of
up to ‑40 °C
5 6 4 3
Operation guide
Installation of the pipe system | en
1 Smoke aspiration pipe
2 Aspiration reducing film sheet
with air sampling opening
3 Marking tape for aspiration
reducing film sheet
4 Air sampling opening
5 Fire red (RAL 3000)
6 Transparent
2020.04 | 2.1 | F.01U.130.928
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