nkSRPS CEN/TS 15502-3-2:2026

Gas-fired central heating boilers - Part 3-2: H2NG - Expansion of EN 15502-2-2:2024

Scope

Shall be according to EN 15502-2-2:2024, Clause 1 with the following modifications:
Add at the end of the list, after h), the following:
“i) which are atmospheric fully premixed appliances equipped with a Pneumatic Gas supply (PGS) that are intended to be connected to gas grids for natural gases of the second family where up to 20 mol% H2 is added to the natural gas (H2NG-Y20), where the quality of the distributed gas without adding the hydrogen is not likely to vary to a large extent over the lifetime of the appliance”
Replace:
“ak) appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas;”
with:
“ak) appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas, except for atmospheric fully premixed appliances equipped with a Pneumatic Gas supply (PGS)(which are covered by this document);”