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Standards Document Up for Review:

Standard 205-12 | Energy Efficiency Classification for Fans"

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Section/Figure/Table #: 3.1.2. fan size (the design impeller diameter)
Please affirm the exact meaning if size because it affects the FEG value.

Proposed Change:
"For the purpose of FEG determination, fan size is the average of the diameters of the circles inscribed by the blade tips at the back-plate and the shroud."

Armin Hauer
ebm-papst. Inc.
Posted: April 12, 2017

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