Siemens FDL241-9, Technical Manual

Page: 38 / 90

Planning 4
Planning in rooms with inclined ceilings
38
Building Technologies
007016_i_en_--
Fire Safety 2012-09-07

Distance between detector and ceiling (3): Define the distance between the
detector and the ceiling depending on the room height. See [➙ 43]

Installation surface: Define the installation surface given the architectural
circumstances. The installation surface must be stable and vibration-free. See
[➙ 45]
If the room has one or more of the following circumstances, you must also observe
further information.

Ceiling with uneven inclines: The detector must be slid sideways to the flatter
roof incline. See [➙ 39]

Narrow spatial circumstances: Maintain the minimum distance (2) between two
detectors. See [➙ 47]

Girders: The detector can be installed in the ceiling panel between the girders
or below the girders. See [➙ 47]

Glass panes: Detection through glass panes and installation on glass panes
are only possible under restricted circumstances. See [➙ 49]

Danger of moisture condensation: Use the detector heating unit if there is a
danger of moisture condensation. See [➙ 50]

Extraneous light: Use the extraneous light filter in the case of extremely strong
extraneous light. See [➙ 51]
Infrared ray in the gable
In the case of ceilings with an inclination of n > 0.5, you must always install an
infrared ray in the gable. In the case of ceilings with an inclination of n < 0.5, the
infrared ray is not necessary in the gable.
Left: Ceiling with inclination of n > 0.5. Right: Ceiling with inclination of n < 0.5