Historical
ANSI/ASHRAE Standard 87.3-2001 (R2010)
Method of Testing Propeller Fan Vibration -Diagnostic Test Methods
Applies to all types and sizes of air-conditioning units, heat pumps, and chillers using direct-driven 250 mm to 750 mm (10 in. to 30 in.) diameter propeller fans, which, for the purposes of this standard, are called a “system."
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]
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