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Whitepaper: Ducted Systems Fan Power Requirements of ASHRAE 90.1-2016

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Standard 90.1-2016 of the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) outlines the requirements for fan power in HVAC systems. The International Energy Conservation Code (IECC-2018) also adopts the same requirement. In particular, the standard can easily be misinterpreted when applied to direct drive fan motor combinations.