Sets out requirements for the installation of solar hot water supply systems in household premises and in commercial and industrial installations comparable with household installations intended to deliver potable water of acceptable quality. It is intended to cover types of systems with fixed solar orientation and inclination with volumetric storage capavity up to and including 700 L and supplying potable water of acceptable quality. It does not apply to the design, performance or rating of systems or components used in solar hot water supply systems nor does it apply to space heating, swimming pool heating or to hot water installations supplied from a central hot water system in large buildings such as multiple flat buildings.