Mounting / Installation; Required Space - Siemens OOH740 Technical Manual

Automatic fire detectors
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5 Mounting / Installation

5.1 Required space

Building Technologies
Fire Safety
Upon insertion of the detector base and sounder base, the detector base is
placed under stress by compression, tension, and torsion. The fastening
method must, therefore, be designed accordingly.
Detector bases and sounder bases must be placed flat on the ceiling.
Avoid mounting on steps, concrete ribs, etc.
Install the detector base or sounder base directly on the recessed box or a
level surface.
If a surface-mounted cable feed is used, there are two possible break-out
points on the detector base or sounder base for the cable entry. Max. cable
diameter: 8 mm.
The point detector must have at least 2 cm of free space to the side. Only then
can the point detector be removed from the detector exchanger DX791 and the
adapter for detector exchanger FDUD491.
Contorted detector bases or sounder bases will complicate or even impede the
insertion of detectors.
*
1
1 Detector exchanger
*
*
* = min. 2 cm
2
2 Telescope or extension rod
Mounting / Installation
Required space
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A6V10305793_m_en_--
2016-02-15
5

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