本欧洲标准适用于确定液化燃料燃烧的加热锅炉和组合锅炉的性能。 EN 303 1:2016和EN 303 2:2016规定了加热性能的要求。 该测试代码包括执行和评估锅炉测试程序的要求和建议，以及将进行测试的技术条件的细节。 EN 303 6中规定了组合锅炉卫生热水生产的要求和性能测试

This European Standard applies to the determination of the performances of heating boilers and combi boilers fired by liquid fuels. The requirements for the heating performances are laid down in EN 303 1:2016 and EN 303 2:2016. This test code includes the requirements and recommendations for carrying out and evaluating the procedure for testing boilers and also the details of the technical conditions under which the tests will be carried out. The requirements and the performance of testing for the sanitary hot water production of combi boilers are laid down in EN 303 6.