Two important documents were released in 2014, DW/144 Second Edition (Specification for Sheet Metal Ductwork Low Medium and high pressure/velocity air systems) and TR/19 (Internal Cleanliness of Ventilation Systems). The cleanliness of ductwork, both existing and new location of access doors and the cleaning and maintenance of ventilation systems are all closely linked. This can be cleaning of ductwork as part of a building maintenance programme or of new ductwork systems prior to handover. The importance of regularly cleaning ductwork ventilation systems is well established. With this greater understanding the requirement for access into the ductwork systems for maintenance, inspection and cleaning has increased. Introduction Ductwork air systems can be a source of spreading disease and infections. Members are strongly advised to fully acquaint themselves with the requirements and guidance given in all the documents referenced.ģ 3 1. It should not be taken as a definitive summary of all the requirements of BS EN 15780:2011 or in any way be considered a substitute.
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How should I protect, deliver and install the ductwork? FAQs (frequently asked questions) Conclusion Pre-Contract Checklist 17 This document has been produced in good faith by ADCAS to help inform and guide members. How clean does the ductwork need to be? 9 8. DW/144 Second Edition TR19 Second Edition BS EN 15780: Location of access doors 6 6.
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1 An ADCAS Guide to Ductwork Cleaning Requirements and Access Doors How to interpret DW/144, TR/19 and BS EN 15780Ģ 2 Contents 1.
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