EN 15332:2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements on the hot water storage tanks
  4.1 Energy assessment
  4.2 Estimating the hot water capacity from the
      actual storage capacity
  4.3 Estimating the hot water capacity with
      known heat exchanger performance
  4.4 Measuring the hot water capacity
5 Measurements
  5.1 Connection of the storage tank
  5.2 Measurement of the heat exchanger
      performance
  5.3 Measurement of the hot water capacity
  5.4 Measurement of the standby-loss
6 Requirements on the test rig
  6.1 Environment
  6.2 Measuring accuracy

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.