Installation/Configuration Notes; Prerequisite; Installation Position - Bosch FAD-420-HS-EN Handbuch

Duct Smoke Detector
Pos.
M
N
O
P
x
3

Installation/configuration notes

Figure 3.1: Installation positions
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.
Bosch Sicherheitssysteme GmbH
Description
#10-24 expanding nuts for installing housing on ventilation duct
#10-24 x 1 in. screws for installing housing on ventilation duct
Air filters for sample tube and ventilation tube
Foam rubber sealing rings
Tamper switch for monitoring unauthorized opening of the cover
a Bend or other delay to the airflow
b At least 3 x d
c Turbulence through the bend (a)
d Width of the ventilation duct
Installation Guide
Installation/configuration notes | en
2018.12 | 8 | F.01U.033.733
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