walls etc). Temperature differences might stop smoke or
heat 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
(eg. over stair shafts) where
it may be difficult to reach the alarm (for testing or hushing).
•
Locate away from very
dusty
or
dirty
areas as dust build-up
in the chamber can impair performance. It can also block the
insect screen mesh and prevent smoke from entering the
smoke detector chamber.
•
Locate the unit at least 1 metre (3 feet) from
dimmer
controlled lights and wiring
- some dimmers can cause
interference.
•
Locate unit at least 1.5m (5 feet) and route wiring at least 1m
(3 feet) away for
fluorescent light fittings
as electrical
“noise” and/or flickering may effect the unit.
•
Do not locate in
insect infested areas
. Small insects getting
into the smoke detector chamber can cause intermittent
alarms. Insects and contamination on the Heat Alarm sensor
can increase its response time.
POSITIONING SMOKE & HEAT ALARMS
The location must comply with applicable building regulations.
Ceiling Mounting
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 & Heat Alarms must be mounted
away from corners. Place the unit at least 300mm (12 inches)
from any light fitting or decorative object which might obstruct
smoke / heat entering the Smoke Alarm. Keep at least
300mm (12 “) away from walls. See figure 3.
On a sloping Ceiling
In areas with sloping or peaked ceilings install your Alarm 90
cm (3 feet) from the highest point measured horizontally (see
figure 4), because “dead air” at the apex may prevent
smoke/heat from reaching the unit.
6
DEAD AIR SURFACES
NEVER WITHIN 15cm
OF ANY CORNER
IDEAL IN CENTRE
OF CEILING
15 TO 30 cm
(6-12")
90 cm
(3 FEET)
Figure 3
Figure 4
13425-R1-12V COMMON-UC 29/9/09 7:56 AM Page 6
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