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About This Item

 

Full Description

ASHRAE Standard 15 establishes safeguards for life, limb, health, and property and prescribes safety requirements. This standard is directed toward the safety of persons and property on or near the premises where refrigeration facilities are located. It includes specifications for fabrication of tight systems but does not address the effects of refrigerant emissions on the environment. This standard applies to (a) the design, construction, test, installation, operation, and inspection of mechanical and absorption refrigeration systems, including heat pump systems used in stationary applications; (b) modifications including replacement of parts or components if they are not identical in function and capacity; and (c) substitutions of refrigerant having a different designation.

The 2019 edition of Standard 15 incorporates the following changes:
• Makes changes to requirements for R-717 ammonia systems
• Introduces requirements specific to Low Global Warming Potential (Low GWP) A2L refrigerants
• Changes restrictions for small, self-contained systems with higher-flammability refrigerants
• Defines “low-probability pumps” and provides requirements for their use
• Identifies requirements when changing a refrigerant within the same refrigerant class and lists restrictions on mixing refrigerants from different classes
 
ASHRAE Standard 34 is intended to establish a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name. It establishes a uniform system for assigning reference numbers, safety classifications, and refrigerant concentration limits to refrigerants. The standard also identifies requirements to apply for designations and safety classifications for refrigerants and to determine refrigerant concentration limits. This standard provides an unambiguous system for numbering refrigerants and assigning composition-designating prefixes for refrigerants. Safety classifications based on toxicity and flammability data are included along with refrigerant concentration limits for the refrigerants. This standard does not imply endorsement or concurrence that individual refrigerant blends are suitable for any particular application.
 
The 2019 edition incorporates the 24 approved and published addenda to Standard 34-2016. Among key changes in the 2019 edition are the following:
• Addition of fifteen total new refrigerants
• Revisions to make 2L a separate flammability classification of refrigerants
• Changes that base toxicity classification on the nominal formulation of the blend
• Corrections to language for the proper naming of molecules containing iodine
• Revisions to address fluids whose critical temperature is lower than 130°F (54.4°C)
• Standardization of terminology
 
 

Document History

  1. ASHRAE 15-2019 (packaged w/ 34-2019)

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    Standard 15-2019 (packaged w/ Standard 34-2019) -- Safety Standard for Refrigeration Systems and Designation and Classification of Refrigerants (ANSI Approved)

    • Most Recent
  2. ASHRAE 15-2016 (packaged w/ 34-2016)


    Standard 15-2016 (packaged w/ Standard 34-2016) -- Safety Standard for Refrigeration Systems and Designation and Classification of Refrigerants (ANSI Approved)

    • Historical Version
  3. ASHRAE 15-2013 (packaged w/ 34-2013)


    Standard 15-2013 (packaged w/ Standard 34-2013) -- Safety Standard for Refrigeration Systems and Designation and Classification of Refrigerants (ANSI Approved)

    • Historical Version
  4. ASHRAE 15-2010 (packaged w/ 34-2010)


    Standard 15-2010 (packaged w/ Standard 34-2010) -- Safety Standard for Refrigeration Systems (ANSI Approved) and Standard 34-2010 -- Designation and Classification of Refrigerants

    • Historical Version
  5. ASHRAE 15-2007 and 34-2007 SET


    Standard 15-2007 (packaged w/ Standard 34-2007) -- Safety Standard for Refrigeration Systems (ANSI Approved) and Standard 34-2007 -- Designation and Classification of Refrigerants

    • Historical Version
  6. ASHRAE 34-2007


    Standard 34-2007 -- Designation and Safety Classification of Refrigerants (ANSI Approved) and Standard 15-2007- Safety Code for Mechanical Refrigeration (ANSI Approved)

    • Historical Version
  7. ASHRAE 34-2004


    Standard 34-2004 -- Designation and Safety Classification of Refrigerants (ANSI Approved)

    • Historical Version
  8. ASHRAE 15-2004


    Standard 15-2004 -- Safety Standard for Refrigeration Systems (ANSI Approved)

    • Historical Version
  9. ASHRAE 15-2001


    Standard 15-2001 -- Safety Standard for Refrigeration Systems (ANSI approved) [CONTINUOUS MAINTENANCE STANDARD]

    • Historical Version
  10. ASHRAE 34-2001


    Standard 34-2001 -- Designation and Safety Classification of Refrigerants (ANSI Approved)

    • Historical Version
  11. ASHRAE 34-1997


    Standard 34-1997 -- Designation and Safety Classification of Refrigerants

    • Historical Version
  12. ASHRAE 15-1994


    Standard 15-1994 -- Safety Code for Mechanical Refrigeration

    • Historical Version
  13. ASHRAE 34-1978


    Standard 34-1978 -- Number Designation of Refrigerants

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. ASHRAE 34-2019 Addendum p

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    Addendum p to Standard Standard 34-2019 -- Designation and Classification of Refrigerants (ANSI Approved)

  2. ASHRAE Errata (August 20, 2019)

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    Errata to Standard 15-2019 (packaged w/ Standard 34-2019) -- Safety Standard for Refrigeration Systems and Designation and Classification of Refrigerants (ANSI Approved)

  3. ASHRAE 34-2019 Addendum t

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    Addendum t to Standard Standard 34-2019 -- Designation and Classification of Refrigerants (ANSI Approved)

  4. ASHRAE Errata (June 11, 2019)

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    Errata to Standard 15-2019 (packaged w/ Standard 34-2019) -- Safety Standard for Refrigeration Systems and Designation and Classification of Refrigerants (ANSI Approved)

  5. ASHRAE 34-2016 Addendum y

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    Addendum y to Standard Standard 34-2016 -- Designation and Classification of Refrigerants (ANSI Approved)

  6. ASHRAE 34-2016 Addendum x

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    Addendum x to Standard Standard 34-2016 -- Designation and Classification of Refrigerants (ANSI Approved)