Bosch FAD-420-HS-EN Guia De Instalacion página 216

en | Product description
216
3.
4.
Figure 4.6: Expanding nuts
5.
6.
7.
Figure 4.7: Sealing rings
8.
2015.03 | 6.0 | F.01U.033.733
Drill two ∅ 9.5-mm holes in the ventilation duct for the two expanding nuts to secure the
housing, and drill the ∅ 44.5-mm openings for the sample tube and ventilation tube.
Remove the drilling jig, deburr sharp edges, and remove debris and dirt.
Place expanding nuts #10-24 in the two ∅ 9.5-mm holes
Screw the #10-24 x 1 in. screws into the expanding nuts and tighten by hand. This
ensures the expanding nuts are fixed securely in the ventilation duct.
The expanding nuts can be held securely with a pair of pliers to stop them turning as the
screws are screwed in.
Now remove both screws.
e Ventilation tube mounting flange
f Ventilation tube mounting flange
g Foam rubber sealing rings
Place the foam rubber sealing rings on the back of the FAD-420-HS-EN on the mounting
flanges of the sample tube and ventilation tube.
Installation Guide
Duct Smoke Detector
Bosch Sicherheitssysteme GmbH