Installation Of The Pipe System - Bosch FAS-420-TM Operation Manual

66 en | Installation of the Pipe System
5

Installation of the Pipe System

At the very least, the pipes and fittings used for the pipe system must comply with class 1131
according to EN 61386-1, 2004. Class 1131 requires the following of the pipe system in use:
The pipe system must be constructed using the following pipes and the associated fittings:
* PVC pipes do not correspond to the temperature range given above.
NOTICE!
When constructing the pipe system, observe the temperature range specified in
Section 2.8.2 Pipe system, page 31.
Installation instructions
The pipe system must be constructed according to planning specifications and taking into
account the planning guidelines (see Section 3 Planning, page 33).
1.
2.
NOTICE!
If halogen-free plastics must be used, the installation procedures may vary depending on the
selected material:
–
–
–
3.
NOTICE!
Pipe bends must be given preference over pipe elbows. Too many bends and pipe elbows
reduce the air speed in the aspiration pipe, thereby increasing the detection time.
As a benchmark, a pipe bend corresponds to a straight pipe length of 0.3 m. An elbow
corresponds to a straight pipe length of 1.5 m.
4.
F.01U.088.878 | 4.1 | 2010.11
Features
Compression resistance
Shock resistance
Temperature range
Smoke aspiration pipe
Shorten the pipes with a pipe-cutter (38 mm) or a metal saw. Deburr the joints and clean
up the chips.
Before gluing, clean the adhesion points with the prescribed cleaning agent (Tangit) to
remove dirt and grease. Use the Tangit adhesive to glue the pipe transitions with the
appropriate fittings so that they are airtight.
ABS is glued
Polypropylene (PP) is welded
Polyamide (PA) is pushed together and bolted.
Minimize pipe lengths and changes of direction. Pipe elbows have an extremely high flow
resistance. Therefore, they should only be used where they cannot be avoided for
structural engineering reasons. If necessary, reduce pipe lengths in proportion to the
pipe elbows used.
Fix the pipe system. It must not sag or be possible to move it. Fasten the pipes with pipe
clips without rubber inserts. The distance between the pipe clips should not exceed
80 cm. At high temperatures, reduce the distance between the pipe clips to a maximum
of 30 cm.
0.5 kg, drop height of 100 mm
Exterior diameter
25 mm
Operation Guide
FAS-420-TM Aspirating Smoke Detector
Severity
125 N
-15 °C to +60 °C
Internal diameter
ABS PVC*
21.4 mm 21.2 mm
Bosch Sicherheitssysteme GmbH