BS EN 304:2017

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General conditions for testing
5 Measurement accuracies and uncertainties
6 Measurements for the heating mode
7 Measurement of the sanitary water production mode
8 Test report and other documents
Annex A (normative) - Calculations for the heating mode
Annex B (informative) - Applicable symbols and units
Annex C (informative) - Criteria for the adaptation of
        forced draught burners using liquid fuels to heating
        boilers
Annex D (informative) - Information for setting up
        and evaluation of the test rig
Annex E (informative) - Determination of the heat
        losses of the test rig
Annex ZA (informative) - Relationship between this
         European Standard and the ecodesign requirements
         of Commission Regulation (EU) No [813/2013]
         aimed to be covered
Annex ZB (informative) - Relationship between this
         European Standard and the ecodesign requirements
         of Commission Delegated Regulation (EU) No
         [811/2013] aimed to be covered
Bibliography

Pertains to the determination of the performances of heating boilers and combi boilers fired by liquid fuels.

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.