# Directive 2009/142/EC of the European Parliament and of the Council of 30 November 2009 relating to appliances burning gaseous fuels (codified version) (Text with EEA relevance), Division 3.4.4

Extent: E+W+S+N.I.

Independent flueless domestic heating appliances and flueless instantaneous water heaters must not cause, in the room or space concerned, a carbon monoxide concentration likely to present a danger to the health of persons exposed, bearing in mind the foreseeable duration of their exposure.

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Source: https://www.legislation.gov.uk/eudr/2009/142/annex/I/division/3/division/3.4/division/3.4.4 (the official version)
Page: https://openlegislation.uk/eu-directive-2009-142/annex-I/division-3/division-3.4/division-3.4.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.