Mounting
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5.5
Mounting the sampling pipe
5.5.1
General
The mounting and installation are to be carried out by analogy as specified in Section “Planning” in this document. Any devia-
tion from the layout of the sampling pipe and sampling holes (also outside the limits calculated using “ASD PipeFlow”) is sub-
ject to the consent of the manufacturer.
The sampling pipe can be made of hard PVC or halogen-free ABS material, depending on requirements. In special applica-
tions – e.g. in extremely corrosive environments – other tube materials can also be used, subject to the specifications set out
in Sec. 5.3.
Warning – installation and modification of the sampling pipe
System performance depends on the sampling pipe. Any extensions or modifications to the installation may
cause functional faults. The effects of such changes must be checked. It is very important to adhere to the speci-
fications in Sec. 4 (Planning). The “ASD PipeFlow” calculation software is available from the manufacturer.
5.5.2
Mounting with PVC tubes and fittings
As a rule, if the system operator does not specify a halogen-free installation, the sampling pipe can be made using hard PVC
tubing. When PVC tube material is installed, the individual tube parts are glued together using a special PVC adhesive (e.g.
Tangit for PVC). The adhesive manufacturer’s instructions must be followed. Before gluing, use household paper to remove
any dust and grease deposits from the surfaces to be glued (do not use textile cloths). If the tube parts are very dirty, a clean-
ing agent as specified by the adhesive manufacturer may have to be used.
Danger
The adhesives and cleaning agents used for connecting PVC materials contain solvents and are combustible. For
this reason, prior to working with these materials it is imperative to read and observe the safety instructions and
information provided by the adhesive supplier.
Notice
The two glueable materials – ABS and PVC – must not be combined, since different adhesives are used.
5.5.3
Mounting with ABS tubes and fittings
If required, halogen-free ABS material can be used for the sampling pipe. When ABS tube material is installed, the individual
tube parts are glued together with a special ABS adhesive (e.g. Tangit for ABS). The adhesive manufacturer’s instructions
must be followed. Before gluing, use household paper to remove any dust and grease deposits from the surfaces to be glued
(do not use textile cloths). If the tube parts are very dirty, a cleaning agent as specified by the adhesive manufacturer may
have to be used.
Danger
The adhesives and cleaning agents used for connecting ABS materials contain solvents and are combustible. For
this reason, prior to working with these materials it is imperative to read and observe the safety instructions and
information provided by the adhesive supplier.
Notice
The two glueable materials – ABS and PVC – must not be combined, since different adhesives are used.
ASD532 Operating Manual
Summary of Contents for ASD 532
Page 1: ...ASD 532 Aspirating Smoke Detector Operating Manual ...
Page 2: ...2 88 ASD532 Operating Manual ...
Page 6: ...6 121 ASD532 Operating Manual ...
Page 7: ...Document history 7 121 Document history First edition Date 15 10 2015 ASD532 Operating Manual ...
