6
3. Recommended Locations for Alarms
NOT IN
THIS AREA
ANYWHERE IN THIS
AREA
SLOPED CEILING
1000 mm
500 mm
DEAD AIR
DO NOT INSTALL
Figure 2C
Figure
• When mounting the alarm on a sloping ceiling, it should not exceed
1500mm away from the apex. The spacing of additional alarms, if
any, should be based on a horizontal distance measurement, not a
measurement along the slope of the ceiling (see Figure 2B )
2B
• In rooms with open joists or beams not exceeding 300 mm, ceiling
mounted alarms shall be located on the bottom of such beams. (See
Figure 2C )
• Alarms installed on an open-joist ceiling shall have the smooth ceiling
spacing reduced to no more than half of the listed spacing when
measured at right angles to the solid joist. (See Figure 2C)
The alarm should be
located between 500
mm and 1500 mm of
the highest point.
