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4.3 On a sloping Ceiling
In areas with sloping or peaked ceilings install your Smoke
Alarm 0.9m from the highest point measured horizontally (see
figure 6), because dead air at the apex may prevent smoke
from reaching the unit.
4.4 Locations to Avoid
Don t place your Smoke Alarm in any of the following areas:
¥ Bathrooms, kitchen, shower rooms, garages or other
rooms where the smoke alarm may be triggered by steam,
condensation, normal smoke or fumes.
¥ Attics or other places where extremes of temperature may
occur (below 4¡C or above 40¡C).
¥ Near a decorative object, door, light fitting, window
molding etc., that may prevent smoke from entering the
Smoke Alarm.
¥ Surfaces that are normally warmer or colder than the rest
of the room (for example attic hatches, uninsulated exteri-
or walls etc). Temperature differences might stop smoke
from reaching the unit.
¥ Next to or directly above heaters or air conditioning
vents, windows, wall vents etc. that can change the
direction of airflow.
¥ In very high or awkward areas where it may be difficult to
reach the alarm for testing.
¥ Locate unit at least 1.5m away from fluorescent light fit-
tings as electricial noise and/or flickering may affect the
unit.
¥ Locate away from very dusty or dirty areas as dust build-
up in the chamber can make unit too sensitive and prone
to alarm. It can also block the insect screen mesh and pre-
vent smoke from entering the chamber.
¥ Do not locate in insect infested areas. Small insects get-
ting in to the chamber can cause intermittent alarms.
4.5 Nuisance/False Alarms
If, when the alarm goes off, there is no sign of smoke, heat or
noise to indicate that there is a fire, you should get your fam-
ily into a safe place, before you start investigating.
Check the house carefully in case there is a small fire smoul-
dering somewhere.
Check whether there is some source of smoke or fumes, for
example cooking fumes being drawn past the Smoke Alarm
by an extractor.