Aspiration Smoke Detector Series And Accessories Overview - Bosch FAS-420-TT Series Operation Manual

14 en | Technical specifications
To set the FAS-420 to the airflow typical for the pipe network, an airflow initialization (flow-
init) procedure is carried out. This must be done for each unit once at the start after
installation, each time the pipe system is replanned/redesigned and after changing the fan
voltage. This enables the unit to determine and save the airflow typical for the pipe network.
Pipe system
A pipe system with an overall length of up to 300 m can be connected to FAS-420 series
aspirating smoke detectors over a maximum of 32 aspiration points. Two pipe systems can be
connected to both the FAS‑420‑TP2 and FAS‑420‑TT2 variants. The entire pipe system then
has a total length of 2 x 280 m and a maximum number of 2 x 32 aspiration points.
3.5 FAS‑420 Aspiration smoke detector series and accessories
3.5.1 Overview
1
A
B
C
D
E
Overview of FAS-420 series aspirating
smoke detectors and accessories
FAS-420 Aspiration smoke detector series has the following components:
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2020.04 | 6.1 | F.01U.029.275
FAS / FCS
3
F
G
Plastic housing
Plastic connection pieces
Integrated air-return pipe
Connection for pipe with 25 mm external diameter
Aspiration unit with optimized air supply
Motherboard with interface for diagnostics system, LSN connections, connection for
shield wire, as well as DIP switch for address setting
Supplementary package with cable bushings (1 x M20, 2 x M25)
FAS-420-TP1 /FAS-420-TP2: optical LEDs for alarm, malfunction and operation
FAS-420-TT1 /FAS-420-TT2: smoke level LED(s), LEDs for info, internal and main alarm,
malfunction and operation
1 detector module (for FAS-420-TP1 and FAS-420-TT1) and/or 2 detector modules (for
FAS-420-TP2 and FAS-420-TT2).
1 Pipe system(s)
2 Connections to fire panel/power supply
3 Air-return pipe
A Vibration absorber (sold separately)
B MT-1 unit mounting
2
C Detector module
D DIAG Diagnostic Software with connection
cable
E Cable bushings (1 x M20, 2 x M25)
F Test pipe
G Test adapter
Operation guide
Aspiration smoke detector LSN improved
Bosch Sicherheitssysteme GmbH