Bosch FAH-420, Operation Manual

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gn Green, connection to shield wire
NC/C/NO Change-over contact relay
+V/0 V Terminals for looping through the supply voltage for downstream
elements
MPA/FAA-420-RI remote indicator
Detector Base Sounders
Detector base sounders are used if acoustic alarm signaling is required directly at the fire
source. Detector base sounders are available in four variants.
– MSS 300 Detector Base Sounder White, for conventional
line technology, activation via the C point of the detector
in use.
– MSS 300 WS-EC Detector Base Sounder White, for
conventional line technology, with external activation
(via an interface module).
– MSS 401 Detector Base Sounder White, for LSN line
technology, with separate power supply.
The integrated tone generator has 11 tones for selection
(incl. tones conforming to DIN 33404 and EN 457) with sound
pressure of max. 100 dBA, depending on the type of tone
selected.
With the LSN variants, the volume (4 levels) and also the tone
type are programmed via the fire panel. The tone type on
conventional variants is set via four DIP switches and the
volume is adjusted continuously via a potentiometer.
FNM-420-A-BS Detector Base Sounder White or Red, for LSN
line technology, with power supply via the LSN with 32
different tones
Installation of the Detector Module
i
Notice!
The packaging for the multisensor detector with C sensor consists of tear-proof PE-ALU lami-
nated film and must be cut open carefully.
After installation and connection of the base, the detector head is set into the base and turned
to the right as far as it will go.
Detector bases are delivered with inactive locks.
The detector module can be locked in the base (removal protection). The locking feature is
activated by breaking the bolt (X) out of the base and pushing it into the corresponding guide,
as shown in , page 22.
5.4
5.5
22 en | Connection
Automatic Fire Detectors LSN
improved
12/2012 | 8.1 | F.01U.003.448 Operation Guide Bosch Sicherheitssysteme GmbH