System overview, Setting the detector address, Installing the unit – Bosch FAS-420-TM Series Aspirating Smoke Detectors LSN improved version User Manual
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FAS-420-TM | FAS-420-TM-R | FAS-420-TM-RVB
en
27
Bosch Sicherheitssysteme GmbH
F.01U.088.879 | 4.0 | 2010.12
System Overview
Setting the Detector Address
Installing the Unit
FAS-420-TM Series Connections
1
Connection for aspiration pipe
2
Connection for air-return pipe
3
Pre-punched M 25 cable entries for connection to fire panel or power supply (input/
output)
4
Pre-punched M 20 cable entries for connection to fire panel or power supply (input/
output)
FAS-420-TM Series Displays
1
Operating LED
2
Main alarm LED
3
Pre-alarm LED
4
Fault LED
5
Infrared port
6
Fire source identification displays for areas A-E
7
10-segment smoke level display
The aspirating smoke detector's address is set using the 8-pin DIP switches on the printed
circuit board and a suitable sharp object. The default address is "0" (all DIP switches set to
"off"). The DIP switch settings for all approved addresses are listed on pages 5-6 (0 = off,
1 = on).
Address
(A)
Operating mode
Network structure
Loop
Stub
T-tap
0
Automatic address assignment in "improved
version" LSN mode
X
X
-
1 to 254 Manual address assignment in "improved
version" LSN mode
X
X
X
255 = CL Automatic address assignment in "classic"
LSN mode (address range: max. 127)
X
X
-
x = possible
- = not possible
NOTICE!
It is not permitted to use different operating modes in one loop/stub/T-tap next to each other.
WARNING!
The equipment may only be installed by authorized and qualified personnel!
Switch off the unit before carrying out any connection work!
NOTICE!
-
When selecting the installation location, it must be ensured that the unit displays are
easily visible.
-
Remember when planning that the unit fans generate a noise level of approx. 40 dB(A).
-
The air outlet on the unit must not be obstructed. The distance between the air outlet
and adjacent objects, e.g. a wall, has to be at least 10 cm.
-
The aspirating smoke detector can be installed with the suction device upwards or
downwards (to do this, the detection unit cover must be rotated through 180°). If the
aspiration pipe points downwards, make sure no impurities enter the air-return pipe
which then points upwards.