71
en
the smoke alarm device with radio link
can be attached on the wall instead,
since otherwise it can lead to increa-
sed number of spurious alarms. The
same is applicable for kitchens serving
as exit routes. Even if it is not possible
to install the alarm on the ceiling on
account of insufficient adherence, the
smoke alarm device with radio link
can be affixed on the longer wall as an
exception.
Rooms with slanting ceilings:
For slanting ceilings with a gradient of
less than 20 degrees, the same rules as
those for horizontal ceilings are appli-
cable. In rooms with a ceiling slant mo-
re than 20 degrees to the horizontal,
heat caps can build up in the tip of the
ceiling, which will prevent the smoke
from reaching the smoke alarm device
with radio link. Therefore, the smoke
alarm device with radio link should be
installed at least 0.5m and maximum
1m from the tip of the ceiling. Rooms
that have slanting (gradient more than
20 degrees) and horizontal ceilings
both, the smoke alarm devices with
radio links should be installed on the
horizontal ceiling only if 0.5m distance
from the surrounding walls and slanting
ceiling can be managed (total more
than 1m). Otherwise, the regulations
for rooms with tipped ceilings are ap-
plicable where the tip of the ceiling is a
transition of the slant to the horizontal
part of the ceiling.
Monitored area:
The recommended monitored area per
smoke alarm device with radio link is
up to 60sqm per room with a room
height of maximum 6m. These dimen
-
sions also include a corridor with a
width more than 3m. A room size more
than 60sqm, rooms with high partial
Summary of Contents for FRWM 100 WW
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