This European Standard specifies a method for the energy assessment of a domestic hot water system
comprising an external heating boiler of specified minimum output indirectly heating an unvented (closed) hot
water tank of up to 1 500 l. Whilst tanks intended primarily for direct heating are not covered by this European
Standard, it does allow the provision of electric heating elements for auxiliary use.
BS EN 15332:2007 Referenced Document
EN 12897 Water supply - Specification for indirectly heated unvented (closed) storage water heaters*, 2016-06-01 Update
BS EN 15332:2007 history
2019BS EN 15332:2019 Heating boilers. Energy assessment of hot water storage tanks
2007BS EN 15332:2007 Heating boilers - Energy assessment of hot water storage systems