Duct Smoke Detector
Product description | en
51
Bosch Sicherheitssysteme GmbH
Installation Guide
2019.02 | 9 | F.01U.033.733
1
Product description
The FAD-420-HS-EN Duct Smoke Detector is used to detect smoke in ventilation systems. It
enables the early detection of a fire thanks to its compact housing design, which permanently
conducts air from the ventilation duct through the detector, combined with its modern
LSN
improved
bus technology.
A specially adapted photoelectric smoke detector is installed in the Duct Smoke Detector to
aid its function. When the smoke detector detects smoke, it sends a message to the fire panel,
which then displays an alarm message and carries out the necessary steps that have been
programmed, for example: shutting down the ventilators in the ventilation system.
The Duct Smoke Detector is identified as FAP-425-O-R/FAD-425-O-R , or FAP‑O420/FAD‑O420
respectively, in the Local Security Network (LSN) improved version.
A relay board that facilitates the activation of devices, for example ventilators or smoke
dampers, via a relay with change-over contact, is available as an accessory.
1.1
Scope of delivery
Product overview and scope of delivery, page 52
1.2
Accessories
Type number
Description
FAD-425-O-R
Photoelectric Smoke Detector
D344-1.5
Sample Tube, 0.46 m
D344-3
Sample Tube, 0.91 m
D344-5
Sample Tube, 1.52 m
FAD-RB-DIBT
Relay Board
D344-TF
Air filter (20 units) for Sample/Ventilation Tube
