AMCA Publication 201: Fans and Systems
The purpose of this publication is to demonstrate and explain the effect a system and its connections to a fan have on fan performance. The publication covers system effects that includes ducted versus non-ducted fan systems, individual component losses, control dampers, duct branches, duct elbows, belts and bearing supports, changes in fan speed and changes due to density. A key take away from this standard is its recommendation that elbows near the fan’s inlet be located at least three to five duct diameters upstream of the fan. Elbows can lead to system effects that can negatively affect a fan’s performance. Providing an adequate amount of duct length leading to the fans can help lead to improved efficiency in fan performance and durability.
AMCA Standard 210: Laboratory Methods of Testing Fans for Certified Aerodynamic Performance Rating
The 210 standard establishes industry wide uniform testing methods for a laboratory exhaust fan or any air moving device. The purpose is to determine the aerodynamic performance as it relates to airflow rate, pressure developed, power consumption, air density, speed of rotation and efficiency. The instruments recommended for testing scenarios are detailed, as well as the testing setups and equipment that are required by AMCA. The equipment can include the specific ducts allowed and sizes, and also the chambers the fans are to be housed in. The standard also details the calibrations and calculations that AMCA covers to verify the testing procedures.
AMCA Standard 260: Laboratory Methods of Testing Induced Flow Fans for Rating
AMCA 260 is a follow-up standard to AMCA 210, to further detail the exact testing procedures for specific exhaust fan applications. This standard is typically utilized for applications in laboratory or hazardous atmosphere exhaust situations. It specifically accommodates the induced flow fan’s unique characteristics. In the exhaust fan industry, this standard is typically required by jobsites that require AMCA certification and rated seal to be displayed on the exhaust fan units. The certification provides clarification that the exhaust has been tested under AMCA standards and approved by AMCA.
AMCA Standard 300: Reverberant Room Method for Sound Testing of Fans
The 300 standard provides an industry standard method of determining the sound power levels of an exhaust fan. This standard does not apply to vibration measurements, and instead is focused on the determination of airborne sound emission for the listed setups. It details the specific testing requirements and setups for each application, and can limit certain aspects that include test room size, power supply and mounting requirements. The AMCA certified and recommended instruments are detailed within, as well as the calibrations and calculations that AMCA utilizes to verify the results.