Technical Booklet P Sanitary Appliances Unvented Hot Water Storage and Scalding·Page 17·3.5
Supply pipe length and high temperature flushing
Supply pipes between in-line blending valves and outlets should be kept to a minimum to prevent waterborne pathogen colonisation; intermittent bath use should consider high temperature flushing for pipe pasteurisation, configured to prevent inadvertent high temperature use.
The length of supply pipes between in-line blending valves and final outlets should be kept to a minimum in order to prevent colonisation by waterborne pathogens. Where intermittent use of a bath is anticipated, consideration should be given to high temperature flushing to allow for pasteurisation of the pipes and outlet fittings. This should be configured and operated in such a manner that prevents inadvertent high temperature use.
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