Duct Smoke Detector
Installation/configuration notes | en
53
Bosch Sicherheitssysteme GmbH
Installation Guide
2019.02 | 9 | F.01U.033.733
Pos.
Description
M
#10-24 expanding nuts for installing housing on ventilation duct
N
#10-24 x 1 in. screws for installing housing on ventilation duct
O
Air filters for sample tube and ventilation tube
P
Foam rubber sealing rings
x
Tamper switch for monitoring unauthorized opening of the cover
3
Installation/configuration notes
Figure
3.1: Installation positions
a Bend or other delay to the airflow
c Turbulence through the bend (a)
b At least 3
x
d
d Width of the ventilation duct
3.1
Prerequisite
The FAD-420-HS-EN Duct Smoke Detector is designed for use in ventilation systems with air
speeds from 1
m/s to 20
m/s.
Check the ventilation system specifications before installation to ensure these limits are
adhered to.
If in doubt, use an airflow measuring device to measure the air speed in the duct.
3.2
Installation position
Avoid selecting an installation position near ducts with dead-air space or areas with
turbulence.