Domestic Sprinkler Systems

Domestic Occupancies – system design are based on 2 heads operating for a 10 minutes duration.

Individual dwelling for occupation as a single family unit used or constructed or

adapted to be used wholly or principally for human habitation such as individual

dwelling houses, individual flats, maisonettes and transportable homes with a maximum individual room

size of 40 sq m

Extent of Protection

Sprinkler protection should be provided in all parts of the dwelling with the permitted exception of:

– bathrooms with a floor area of less than 5 sq m

– cupboards and pantries with a floor area of less than 2 sq m and where the least dimension does not

exceed 1m and the walls and ceilings are covered with non-combustible or limited combustible materials

– non communicating, attached buildings such as garages, boiler houses etc

– crawl spaces

Pipe work

Chlorinated polyvinyl chloride (CPVC)

Pipe work is used to install most domestic sprinkler systems.

Most Domestic Sprinkler Systems are fed from the towns mains but

It is unlikely that houses connected to the town main via a 15mm pipe will

be able to meet the manufacturer’s minimum pressure/flow requirements

for the sprinkler head without replacement of the supply pipe.

The use of 32mm/50mm diameter supply pipe from the main has significant

performance benefits over the use of 25mm pipe

(which is currently used for new build properties)

Supply of water from a storage cistern via a booster pump to ensure adequate pressure and flow

To meet BS9251 requirements.

Domestic systems require 60/L a minute for a single head Operating OR 42/L a minute (84/L a minute) for 2 heads operating Simultaneously