Sloped Ceiling
With a sloped ceiling the position of a smoke or heat detector
needs to be measured vertically from the peak. Smoke alarms
can be installed within 600mm (24 inches) and heat detectors
can be installed within 150mm (6 inches of the peak (See fig
2.). Again, it is important to try and position the detector as
central to the ceiling as possible.
Please note: The measurements stated above are a general
guideline. Different manufacturers’ recommendations may
vary.
heat from entering the sensor chamber.
As hot smoke initially rises and then spreads out, smoke
alarms should be located on the ceiling. This is so that smoke
can reach the detector’s sensor chamber as early as possible.
If it is not possible to install the smoke detector on the ceiling,
the unit can be installed up to 575mm (23 inches) below it. A
heat detector should also be located directly on the ceiling;
however if this is not possible, the unit can be installed up to
125mm below it.