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AHRI 551/591-SI-2018

Performance Rating of Water-chilling and Heat Pump Water-heating Packages Using the Vapor Compression Cycle

This standard applies to factory-made vapor compression refrigeration Water-chilling and Water-heating Packages including one or more compressors. These Water-chilling and Water-heating Packages include: Water-cooled, Air-cooled, or Evaporatively-cooled Condensers; Water-cooled heat recovery condensers; Air-to-water heat pumps; and Water-to-water heat pumps with a capacity greater or equal to 40 KW. Water-to-water heat pumps with a capacity less than 40 KW are covered by the latest edition of ASHRAE/ANSI/AHRI/ISO Standard 13256. Note: This standard includes products that may not currently be covered under an AHRI certification program.

Content Provider
Air-Conditioning and Refrigeration Institute [ari]

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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.