Connections Housing Base; Installing The Housing Base; Dust Protection - Bosch FAS-420-TM-HB Instructions De Montage

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Connections Housing Base

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Installing the Housing Base

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Dust Protection

If the detection unit is to be installed at a later stage, the mounted housing base can be
protected against excessive contamination by using the bottom of the supplied card box.
In order to use the bottom of the card box as a dust protection, please proceed as follows:
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F.01U.098.259 | 2.0 | 2009.10
Connection terminals
Connection for aspiration pipe
Connection for air-return pipe
Filter element
Pre-punched cable entries for connection to fire panel or power supply (input/output)
Marking for aspiration pipe connection
When mounting the housing base make sure the displays of the smoke aspiration system
are clearly visible after installing the detection unit.
The air outlet of the housing base must not be blocked. The distance between the air
outlet and adjacent objects (e. g. wall) has to be at least 10 cm.
The housing base can be mounted with the aspiration pipe pointing upwards or
downwards. The connection for the aspiration pipe is marked with a "V" (see Figure 1,
Page 5). If the aspiration pipe points downwards, make sure no impurities enter the air-
return pipe which then points upwards.
First, clearly mark the fixing points for mounting the housing base at its position. If
necessary, use the provided drilling jig.
Fix the housing base by means of four screws in accordance with the mounting type
(max. ∅ of 4 mm) safe to the wall. Make sure that the housing base is neither fixed under
mechanical tension nor that the screws are tightened too much. Otherwise the device
might be damaged, or secondary noise may arise unintendedly.
For the fixing of the housing base only use installation material that is suitable for the
onsite installation and that ensures a safe and durable fixing.
When fixing the housing base pay attention to the "V"-marking for the connection of the
aspiration pipe (see Figure 1, Page 5).
Carefully punch out the required pre-punched cable entries of the housing base (max.
8 x M20 und 6 x M25) using a screwdriver.
Carefully equip the cable entrie(s) as required with M20 or M25 glands (1 x M25 and
2 x M20 included in the delivery) by inserting them into the corresponding cable entry/
entries.
Feed the connection cable(s) (max. cable cross section 2.5 mm²) through the suitable
cable entry/entries into the device and cut it to the required length inside the device.
Wire the device according to the connection information described in the Installation
Guide.
Carefully separate the cover along the pre-punched perforation from the bottom of the
card box.
Open the required openings for the connections of the aspiration pipe, the air-return
pipe and the cable entries by separating the openings carefully along the pre-punched
perforation from the bottom of the card box.
Put the bottom of the card box as protection over the mounted housing base.
FAS-420-TM-HB
Bosch Sicherheitssysteme GmbH