Bosch FAS-420-TM Series Aspirating Smoke Detectors LSN improved version: Commissioning

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FAS-420-TM | FAS-420-TM-R | FAS-420-TM-RVB

F.01U.088.879 | 4.0 | 2010.12

Bosch Sicherheitssysteme GmbH

Fire source identification

Fire source identification is activated/deactivated using the FAS-ASD-DIAG diagnostics 

software via the "Settings" screen. The "ROOM⋅IDENT" function is deactivated as standard.

Main alarm following fire source identification

For certain applications, it is practical to perform the alarm signaling once the fire location 

has been identified. To do this, the "Fire alarm after ROOM⋅IDENT" must be activated. It is 

important to remember that when this function is activated, the "ROOM⋅IDENT" function must 

also be activated; otherwise, the fire location cannot be identified.

The "Fire alarm after ROOM⋅IDENT" function is deactivated as standard.

Commissioning

1.

Insert the FAS-420-TM detection unit into the pre-mounted housing base that has been 

checked for correct wiring.

2.

Change the X4 jumper position when inserting the detector unit (from PIN 1-2 to PIN 2-3, 

or vice versa). By doing so, the airflow is automatically calibrated (see 

Figure 5

, 

Page 4

).

3.

The green operation display flashes when the FAS-420-TM is initializing. If initialization is 

complete, the operation display lights up permanently.

4.

The airflow of the FAS-420-TM may not be influenced during the initialization phase.

Commissioning fire source identification

Fire source identification is set using the FAS-ASD-DIAG diagnostics software via the 

"ROOM⋅IDENT" screen.

1.

Click the [Train] button. This opens the view with adjustable values used to determine 

the transport times for fire source identification in areas A-E.

2.

First enter the number of air sampling openings [Amount of aspiration points].

3.

Then enter the blowing out time and voltage of the blowing out and aspiration fan [Blow 

out time], [Blow out fan], [Intake fan].

You can access the Help function by clicking the question mark to the right of the 

relevant setting.

4.

Click the appropriate suction point (A-E) for which the transport time is to be 

determined.

5.

Enter the preselection time necessary to achieve the aspiration point and supply the 

smoke. Once the selected preselection time has expired, the appropriate smoke 

aspiration point must be charged with smoke. Once the preselection time has expired, 

the smoke must be available at the aspiration point for another 10 to 15 seconds.

6.

Using the smoke level, check that there is no smoke in the aspiration pipe.

7.

Click the [Start] button. The FAS-420-TM-R/-RVB switches to the aspiration pipe blowing 

out. The display of the aspiration point concerned is yellow.

8.

Once the preselection time has expired, switch the FAS-420-TM-R/-RVB to aspiration. The 

smoke must now be available at the selected aspiration point. The smoke level will 

display if smoke is detected by the FAS-420-TM-R/-RVB. The display of the selected 

aspiration point turns green and the determined time is entered. Teaching mode for the 

selected aspiration point is exited.

NOTICE! 

The term "ROOM⋅IDENT" is used in the DIAG diagnostics software for identifying the fire 

source.

NOTICE! 

The following FAS-420-TM designation refers to all FAS-420-TM Series (FAS-420-TM, 

FAS-420-TM-R, FAS-420-TM-RVB) versions. Specific references are made to differences 

between the individual versions.