Duct Smoke Detector
Installation | en
57
Bosch Sicherheitssysteme GmbH
Installation Guide
2019.02 | 9 | F.01U.033.733
7.
Now remove both screws.
Figure
4.7: Sealing rings
e Ventilation tube mounting flange
f Ventilation tube mounting flange
g Foam rubber sealing rings
8.
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.
Mounting
Figure
4.8: Housing installation
h Ventilation duct
i Detector housing
k #10-24
x
1 in. screws
1.
Mount the FAD-420-HS-EN on the ventilation duct and use the #10-24 x 1 in. screws to
secure onto the expanding nuts.
Do not over-tighten the screws. Over-tightening the screws can cause the ventilation duct
sheet to buckle.