1 Scope
This part of BS 5446 specifies requirements and type test methods for multi- sensor fire alarms, using one of the following combinations of sensors :
a) smoke and heat;
b) smoke and carbon monoxide;
c) carbon monoxide and heat; and
d) smoke, carbon monoxide and heat.
It is applicable to multi- sensor fire alarms intended solely for permanent installation on ceilings or walls of dwellings, and to multi- sensor fire alarms suitable for use in leisure accommodation vehicles (LAVs).
It is not applicable to multi- sensor fire alarms incorporating ionization smoke sensors .
NOTE 1 Equipment conforming to this part of BS 5446 might not be suitable for use in boats used as a means of accommodation on inland waterways, due to the corrosive atmosphere.
NOTE 2 Although not covered by this part of BS 5446, equipment is available for use with multi- sensor fire alarms to provide a suitable warning system for use by deaf and h...