Smoke alarm devices are to be used as the bare minimum equipment in all
bedrooms, children's rooms and hallways which act as escape routes, and are to be
installed in each case in the middle of the room, on the ceiling only (do not install on
a wall) (Fig. 2). Select the highest installation location with a minimum distance of
50 cm to surrounding walls, furniture and lamps. In the case of sloping ceilings with
an angle of over 20°, detectors should be installed 0.5 - 1 m away from the highest
point. Configuration is optimal when devices are located in all other rooms as well as
staircases. In washrooms (bathrooms, lavatories etc.), a smoke alarm device is
generally not necessary because the risk of fire is low.
Please note the graphics in this manual and the detailed information available in the
EN14676 standard “Smoke alarm devices for use in residential buildings, apartments
and rooms with similar purposes – Installation, use and maintenance”.
4.1. Special installation cases
Installation in a hallway with a width of < 3 m
Maximum distance from the front walls:
7.5 m
Maximum distance between detectors:
15 m
Installation on the mitre line between
intersecting crossings, T-junctions and
corner areas
Total area of < 60m²: installation on the
mitre line
Total area of > 60m²: each side is
treated as a separate room
In the case of ceiling beams measuring
> 0.2 m and a total area of < 36 m²,
detectors should be installed in the
centre of the room either on a beam or
ceiling panel.
In the case of ceiling beams measuring
> 0.2 m and a total area of > 36 m²,
detectors should be installed in the
centre of each ceiling panel and not on
the beams.
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