Bosch 520 Series - Programming; Operating Locations and Sensitivity Settings

Automatic Detectors LSN improved Programming | en 21
Bosch Sicherheitssysteme GmbH Operation Guide 2019.11 | 4.0 | F.01U.025.877
4 Programming
LSN detectors are programmed according to the required operating mode.
Programming is carried out with the programming software using a PC or laptop connected to
the fire panel.
The suitable response sensitivity of the multisensor detector is programmed by specifying the
operating location (e.g. computer room, office, large kitchen). The selection of the operation
location determines the optimal characteristic diagram for the fire and disturbance variable
evaluation.
If, according to the operating location, a low sensitivity is set for the optical sensor, the alarm
goes off only if the detector senses high levels of smoke and of CO at the same time. This is
the case with open or smouldering fire.
Programming the multisensor detector and linking all detectors by algorithms, considerably
increases the fire detection reliability and lowers the false alarm rate.
Operating locations for multisensor fire detector
(FAP‑OC 520) selectable via the programming
software
Sensitivity
Ounit Cunit
Office (smokers) / waiting room / restaurant /
conference room
low
The sensitivity of
the Cunit is always
equally high,
regardless of the
operating location
Conference room / waiting room / exhibition hall low
Warehouse with vehicle traffic low
Production facilities low
Kitchen / casino / restaurant during operation low
Garage low
Office (daily operation) medium
School / kindergarten medium
Theaters / concert halls medium
Office (no traffic) high
Computer room high
High-board warehouse without vehicle traffic with
internal combustion engines
high
In the case of the optical FAP‑O520 detector, the sensitivity of the optical sensors can be set
on three levels. Depending on the operating location, the optical sensor of the detector is thus
adjusted to the environmental conditions. For fire detection, also the time behavior of the fire
characteristics is evaluated. This is very different from the time behavior of the disturbance
variables.
Operating location and recommended setting for optical fire
detector (FAP‑O520) selectable via the programming software
Sensitivity Ounit
Office (smokers) / waiting room / restaurant / conference room low
Conference room / waiting room / exhibition hall low
Warehouse with vehicle traffic low