6
1 METRE
(3 FEET)
100MM
(4 INCHES)
100MM
(4 INCHES)
BEST LOCATION
(IN CENTRE OF CEILING)
DEAD
AIR SPACES
Ionisation type smoke alarms
are generally
more effective at detecting fast, flaming fires which
consume combustable materials rapidly and
spread fire quickly.
Examples of fast flaming fires
= Ignited paper,
flaming curtains and oil fires
Optical (Toast Proof) smoke alarms
are
less prone to false alarms from cooking fumes and
are therefore suitable for locations near kitchens.
However they are more susceptible to nuisance
alarms from steam and should not be located too
close to bathrooms and showers. Optical smoke
alarms are generally more effective at detecting
slow smouldering fires.
Examples of slow smouldering fires
= cigarette on
furniture and bedding, overheating electrical cables.
POSITIONING