Bosch FAS-420-TM Operation Manual page 60

60 en | Installing the Aspirating Smoke Detector
Figure 4.3 Turning the detector module in the cover of the FAS-420-TM
detection unit
Installation material
Cylinder or flat head screws
–
–
Bore distances
The distances of the borings for securing the FAS-420-TM are shown in Figure 4.4.
Figure 4.4 Bore distances of FAS-420-TM's housing base
Installation
1.
2.
F.01U.088.878 | 4.1 | 2010.11
Maximum thread diameter: 4 mm
Head diameter: max. 8 mm
First, clearly mark the fixing points on the installation position provided on the
equipment. To guarantee a safe and low-vibration hold, the housing base must be
secured with four screws.
Fix the housing base to the surface by means of four screws in accordance with the
mounting type. Make sure that the housing base is not fixed under mechanical tension
and that the screws are not tightened too much. Otherwise, the device might be
damaged or undesirable secondary noise may arise.
Operation Guide
FAS-420-TM Aspirating Smoke Detector
1
140
122
1 Screws
Bosch Sicherheitssysteme GmbH