18
2.4 Where in the room?
<600mm
HEAT ALARMS
<150mm
SMOKE /
MULTI-SENSOR
ALARMS
APEX
300mm
300mm (min)
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 Alarms must be
mounted away from corners. Fit the Alarm:
- At least 300mm away from walls (see Figure 3)
- At least 300mm from any light fitting or decorative
object which might obstruct smoke / heat entering
the Alarm.
Sloping Ceiling
With a sloping or peaked ceiling, install a Muti-Sensor
or Smoke Alarm within 600mm of the peak measured
vertically and a Heat Alarm within 150mm.
If the height of the peak is less than 600mm in the
case of Muti-Sensor or Smoke Alarms or 150mm in the
case of Heat Alarms, the ceiling is regarded as being
flat (see Figure 4).
Fig.3
Fig.4
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