Section 48
of Water Supply Regulations 1961 Reprinted 1999
Section 48
Where any boiler, geyser or other hot water apparatus, or any gas producer, gas engine, oil engine or other apparatus, in or by which water supplied by the Water Authority is heated, is not supplied with cold water from a feed cistern, the supply shall be controlled by a bib tap or stop tap and shall not be connected directly to the water contained in the cistern, but shall be discharged into the air above the overflowing level of the apparatus:
Provided that this regulation shall not apply in the case of –
(a)
a thermostatically controlled electric storage water heater of a capacity not exceeding three gallons; or
(b)
a gas geyser or multipoint heater of a capacity not exceeding three gallons, fitted with an inlet valve automatically controlling both gas and water so that no gas can be released, otherwise than through a bypass, by the apparatus unless water is flowing through a geyser or heater, and not fitted with a packed gland or spindle through which any leakage between the gas and water spaces could occur, if, in either case, the apparatus is not thereby subjected to a working pressure higher than that for which it is designed, is controlled by a stop tap inlet, and has no tap or other means of controlling the flow of water at the outlet, and if every discharge point is in the open air above the overflowing level of any bath, lavatory basin, sink, or other appliance supplied therefrom.
24
Hot water apparatus connected to service pipe not to have connection on outlet side with fitting containing water supplied otherwise than through apparatus.