PART PSanitary appliances and unvented hot water storage systems

Unvented hot water storage systemsP5

1

This regulation shall apply to any hot water storage system (other than a system or part of a system used solely for space heating or an industrial process) that has a storage vessel which—

a

has a capacity greater than 15 litres; and

b

does not incorporate a vent pipe to the atmosphere.

2

A hot water storage system to which this regulation applies, whether heated directly or indirectly, shall incorporate—

a

safety devices to ensure that the temperature of the stored water does not exceed 100°C at any time; and

b

devices to control the working pressure and to relieve excessive pressure.

3

Any discharge from devices provided for the purpose of paragraph (2) shall be conveyed safely to where it can be seen readily and will cause no danger to people.