Notice!
FAP‑420/FAH‑420 Automatic Fire Detectors are not designed for exterior use.
Basic Installation/Configuration Notes
– Multi-sensor fire detectors must be planned in line with the guidelines for optical
detectors until a guideline for their planning is developed in collaboration with the VdS
(see also DIN VDE 0833 Part 2 and VDS 2095):
– Maximum monitoring area 120 m
2.
– Maximum installation height 16 m.
– If occasional switch-off of the optical sensor is required, the planning must occur
according to the guidelines for heat detectors (see DIN VDE 0833 Part 2 and VDS 2095):
– Maximum monitoring area 40 m
2.
– Maximum installation height 7.5 m.
– Maximum permissible air speed: 20 m/s.
– FAH‑T 420 detectors must be configured according to Class A1R when planning fire
barriers conforming to DIBt.
Use in a Local Security Network (LSN/LSN improved version)
In a Local Security Network, the detectors connected to a fire panel can be operated in the
following operating modes:
Detector Type Operating mode
Combined Optical Thermal
maximum
Thermal
differential
FAP-OTC 420 X X X X
FAP-OT 420 X X X X
FAP-O 420/
FAP‑O 420 KKW
- X - -
FAH-T 420/
FAH‑T 420 KKW
- - X X
FAP-DO420 - X - -
FAP-DOT420 X X X X
FAP-DOTC420 X X X X
Notice!
Planning should take the anticipated total current and line resistance into account to ensure
each detector has an operating voltage of at least 15 V DC.
Use in Areas with Elevated Radioactivity
There are two detector types available especially for use in areas with elevated radioactivity,
such as in nuclear power plants:
– FAP-O 420-KKW
3
3.1
3.2
3.3
Automatic Fire Detectors LSN
improved
Planning | en 9
Bosch Sicherheitssysteme GmbH Operation Guide 12/2012 | 8.1 | F.01U.003.448
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