Mounting - Bosch D296 Installation Instructions Manual

10 en | Notices
The D296 and D297 can be set for quick response (5 sec) or normal response (30 sec). Some
burning materials release hazardous gases along with the smoke and should be set for a
shorter response times to minimize exposure to the dangerous vapors. Denser smokes, if
allowed to collect for too long (obscuration time set too long), can produce near total
obscuration of the detector resulting in a trouble signal before an alarm is generated. For
example, fires caused by the ignition of flammable petroleum-based liquids generally lead to a
rapid buildup of heavy smoke. When this type of fire is probable, use sensitivity settings 0 or 1
for a 5-sec response time.
For instructions on setting the sensitivity, see Sensitivity setting, page 11.
4

Mounting

Notice!
Use this product in indoor, dry applications only.
1.
2.
Figure 4.1: Access Door and Cover
3.
2014.01 | 06 | F.01U.068.899
Install a 4‑in. square or octagonal electrical box (or equivalent) to a rigid surface that is
not subject to movement or vibrations.
Remove the screw on the receiver's access door. Then remove the cover's four screws
indicated in the following figure.
1 Access door
Remove the receiver back plate by unscrewing the single mounting screw from the top of
the circuit board carrier plate and separating the two plates as indicated in the following
figure.
Installation Instructions
Long-range Beam Smoke Detectors
2 Cover mounting screws (4)
Bosch Security Systems, Inc.