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B14355-R4-TY-UC-ENG-3105
Figure 4
IDEAL IN CENTRE
OF CEILING
DEAD AIR SPACES
NEVER WITHIN 0.3m
OF ANY CORNER
3. POSITIONING YOUR SMOKE ALARM
3.1. Hot smoke rises and spreads out, so a central ceiling
position is the preferred location. The air is "dead" and does
not move in corners, therefore Smoke Alarms must be
mounted away from corners. Place the unit at least 0.3m (1ft)
from any light fitting or decorative object which might obstruct
smoke entering the Smoke Alarm. Keep at least 0.3m (1ft)
away from walls and corners. See figure 4.
3.2 Wall Mounting
When a ceiling position is not practical (for example on a
ceiling having exposed beams or joists, or built-in radiant
heating) put the top edge of your Smoke Alarm between 15
and 30 cm (6 and 12 inches) below the ceiling. Keep at least
0.3m (1ft) from corners. (see figure 4).
3.3 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 5), because "dead air" at the apex may prevent smoke
from reaching the unit.
3.4 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 exterior
walls etc). Temperature differences might stop smoke from
reaching the unit.
21/12/10
1:30 PM
Page 5
Figure 5
15 to 30 cm
(6 to 12")
0.9m
(3 FEET)
5
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