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Standards Development
The scope will remain the same.
This British Standard specifies requirements for the selection, installation, inspection, commissioning, servicing and maintenance of gas-fired boilers for central heating and other purposes, which have a total rated heat input not exceeding 70 kW based on net calorific value. This includes cookers with integral boilers used to provide central heating.
It applies to boilers utilizing 1st, 2nd or 3rd family gases designed to operate in the condensing or non-condensing mode for the heating of domestic dwellings or domestic dwellings in commercial premises by the circulation of heated water in open or closed systems.
This standard does not apply to:
1. boilers with a rated input of over 70 kW; or
2. groups of boilers with individual ratings of 70 kW or less, but with aggregate inputs of over 70 kW as specified in BS 6644
BS 6798 will be revised to ensure it remains aligned with current industry practice, regulatory expectations and the evolving safety requirements reflected in Gas Safe Technical Bulletins. The existing standard should be reviewed against these bulletins to confirm that guidance on boiler installation, commissioning, servicing, maintenance, flueing, combustion performance, condensate management, electrical safety, hydrogen blends and wider gas safety duties remains current, practical and technically robust.
Updating BS 6798 would provide greater clarity for manufacturers, installers, service engineers, specifiers and enforcement bodies, reduce the risk of inconsistent interpretation, and support improved safety, compliance and consumer protection across domestic gas-fired boiler installations.
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