Regulation 28 Miscellaneous hazards

(1)

Subject to paragraph (2), every system in which heated water is stored in a building (irrespective of whether the water is heated in the system) and which does not incorporate a ventilating pipe open to the atmosphere shall be so constructed as to provide adequate protection from malfunctions of the system.

(2)

This regulation shall not apply to–

(a)

any system in which the storage capacity for heated water does not exceed 15 litres;

(b)

any parts of a system which are used solely for space heating;

(c)

any system used for an industrial or commercial process.