Plumbers' technical note – Evaporative airconditioners, waste water drains and water supply

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All documents issued prior to 1 July 2017 were issued by the former Department of Commerce. Documents listed here are the latest versions available. For more information on this document, please contact

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This technical nte has been issued to alert the plumbing industry and stakeholders to acceptable methods for the termination of waste water drains from evaporative airconditioners.

Building Commission
Technical standards
Last updated 22 May 2014

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