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• in every room where there is an
electrical appliance such as a
portable heater or humidifier, etc.
NOTE! Place a smoke alarm at both
ends of a room if it is more than 9 m
(30 ft) long. For corridors and hallways
that are less than 3 metres (9.8 ft)
wide, the distance between smoke
alarms must not exceed 15 metres
(49.2 ft). The distance from the smoke
alarm and the end wall should not
exceed 7.5 metres (24.6 ft).
Different types of ceiling
Smoke, heat and combustion
products rise to the ceiling and spread
horizontally. Mounting the smoke
alarm on the ceiling in the center of
the room is the safest option, since it
places the smoke alarm closest to all
points in the room.
For further instructions on how to
mount the smoke alarm, please see
the enclosed assembly instruction.
FLAT CEILING (see illustration A)
When mounting a smoke alarm in
a regular flat ceiling, locate it at a
minimum of 50 cm (1.6 ft) from the
side wall and 50 cm (1.6 ft) from any
inside corner. If the distance from
wall to wall is less than 1 m (3.2 ft),
the smoke alarm should be placed in
the middle, i.e with equal distance to
each wall.
SLOPED/PEAKED CEILING (see
illustration B)
If you have a sloped or peaked
ceiling with an angle exceeding
20˚, you should place the smoke
alarm minimum 50 cm (1.6 ft) and
maximum 1 meter (3.2 ft) from the
top of the ceiling. Sloped ceiling that
have an angle of less than 20˚ should
be treated as flat ceiling, see above.
COFFERED/A-TYPE CEILING (see
illustration C)
For ceilings with coffering or beams
that are less than 20 cm (7.8") in
depth, you can install the smoke alarm
either onto the ceiling in between
beams, or onto the beam itself.
If the coffering or beams exceed 20
cm (7.8") in depth, placement of the
smoke alarm depends on the size of
the ceiling. If the ceiling is smaller
than 36m2 (118 sq ft), one smoke
alarm is enough and should be placed
in the middle of the ceiling. If the
ceiling exceeds 36m2 (118 sq ft), you
must install one smoke alarm per 36
m2-area (118 sq ft area).
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