Automatic Detectors LSN improved
Planning Notes | en
9
Bosch Sicherheitssysteme GmbH
Operation Guide
2019.11 | 4.0 | F.01U.025.877
2
Planning Notes
2.1
General Notes
Notice!
The 520 Series Detectors are approved for indoor use only! The detectors must be installed
exclusively in the FAA‑500 Series Bases provided. In addition, the detector base must be
installed in an FAA‑500‑BB Ceiling Mount Back Box or in an FAA‑500‑SB-H Surface Mount Back
Box.
–
Country-specific standards and guidelines must be observed during the planning phase.
–
The FAP‑OC
520, like the FAP‑O
520, is planned according to the guidelines for optical
detectors (refer to EN
54 and VDS
2095).
–
A hemispherical space
(1)
with a radius of 50
cm must remain free below the detector
(2)
.
Care must be taken to ensure that no people, larger animals, plants, opening doors or any
objects intrude into this area and that no parts of the detector surface become covered.
1
5
0
c
m
2
Figure
2.1: Radius
–
The detector may only be installed in a position which is out of arm's reach.
Minimum installation height recommended by BOSCH: 2.70
m.
–
The 520 Series Detectors may not be installed in rooms with data transmission by means
of high-intensity infra-red light (e.g. in rooms with IR systems for interpreters).
–
The detectors must be mounted so that they are not exposed to any direct sunlight.
–
A minimum distance of 50
cm from lamps must be maintained.
The detectors may not be mounted in a cone of light from lamps.
–
By default, the bases are equipped with a spring for mounting the detector in concrete
and wooden ceilings. This spring is identifiable by the blue marking. For mounting a
detector in a false ceiling panel you can use the additional, softer spring in the package
identifiable by the yellow marking. (Note that this application does not meet EN54-7).
–
Maximum permitted air speed: 20
m/s.
2.2
Network Topologies for LSN Improved
In an improved version Local Security Network (LSN
improved), the detectors can be
configured as a loop, a stub or T-tap or in any mixed loop or T-tap structures. However, it is
important to note that mesh structures cannot be created.
The LSN
improved version allows T-taps on stubs or loops and any number of nodes, branches
per node and elements per branch as long as the maximum number of elements does not
exceed 254.
Connections can be positioned anywhere along the LSN line.
