8
4.3.6 Landings and galleries
If a room is divided in height, e.g. by a landing or
gallery, an additional smoke detector is required
below it if:
• both the area below the subdivision (landing,
gallery, etc.) is larger than 16 m²
• as well as length and width exceed 2 m each.
4.3.7 Rooms with joists/ beams
For rooms with beams or other joists, the following
speci
fi
cations must be observed - depending on the
dimensions:
Joists / beams < 0.2 m:
If the joists / beams are not higher than 0.2 m, they
are not relevant and should be considered as part of
the ceiling. The smoke detector can be installed on a
ceiling panel or directly on the joist/beam.
max. 0.2 m
6a
Joists / beams > 0.2 m and area per ceiling
panel > 36 m²:
If the joists/beams are higher than 0.2 m and the
area of the individual ceiling panels is greater than
36 m² each, one smoke detector must be installed
per ceiling panel.
> 0.2 m
> 36 m
2
> 36 m
2
6b
Joists / beams > 0.2 m and area per ceiling
panel < 36 m²:
If the joists/beams are higher than 0.2 m and the
area of the individual ceiling panels is less than 36
m² each, the joists/beams are not relevant and are
to be seen as part of the ceiling. The smoke detector
can be installed on a ceiling panel or directly on
the joist/beam.
> 0.2 m
< 36 m
2
< 36 m
2
6c
Note
• Make sure that the smoke detector(s) to
be installed is/are nevertheless mounted as
centrally as possible in the respective area
(entire ceiling/ceiling panel).
• Furthermore, it should be noted that one smoke
detector is required for each area of max. 60 m².
4.4 Installing the base plate
Note
The smoke detector can be locked by a locking
pin on the base plate to prevent it from being
easily unscrewed. To lock the smoke detector
accordingly later, remove the locking pin from
the base plate with a screwdriver or similar
before installing it. Put the detached pin aside
ready to hand.
• Hold the base plate of the smoke detector at the
installation location - the two mounting holes serve
as a template for marking the drill holes.
Warning
Before drilling and installing, make sure that there
are no electrical lines, water, gas or other lines in
the area of the installation location.
