Paragraph 17
England and Wales
Every unvented water heater, not being an instantaneous water heater with a capacity not greater than 15 litres, and every secondary coil contained in a primary system shall–
be fitted with F1a temperature control device and either a temperature relief valve or a combined temperature and pressure relief valve; or
be capable of accommodating expansion within the secondary hot water system.
An expansion valve shall be fitted with provision to ensure that water is discharged in a correct manner in the event of a malfunction of the expansion vessel or system.
Annotations
Textual amendments
- F1
Words in Sch. 2 para. 17(1)(a) substituted (1.7.1999) by The Water Supply (Water Fittings) (Amendment) Regulations 1999 (S.I. 1999/1506), regs. 1, 2(5)(b)