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Full Description

ANSI/ASHRAE Standard 34-2004, which supersedes Standard 34-2001, describes a shorthand way of naming refrigerants and assigns safety classifications based on toxicity and flammability data. The 2004 edition combines Standard 34-2001 and the twelve approved and published addenda to the 2001 edition, thereby providing an easy-to-use consolidated standard.

This standard is intended to establish a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name. It also establishes a uniform system for assigning reference numbers and safety classifications to refrigerants. The standard identifies requirements to apply for designations and safety classifications for refrigerants, including blends, in addenda or revisions to this standard.

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. This standard does not imply endorsement or concurrence that individual refrigerant blends are suitable for any particular application.

Units: Dual

 

Document History

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


    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

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    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 34-2001


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

    • Historical Version
  10. ASHRAE 15-2001


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

    • 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 & Errata

  1. ASHRAE 34-2004 Addenda a, b, c, f, k, n, o, p, q, r, s, and u

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    Addenda a, b, c, f, k, n, o, p, q, r, s, and u Standard 34-2004 -- Designation and Safety Classification of Refrigerants (ANSI Approved)

  2. ASHRAE 34-2004 Addenda d, j, l, m, and t

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    Addenda d, j, l, m, and t to Standard 34-2004 -- Designation and Safety Classification of Refrigerants (ANSI Approved)

  3. ASHRAE 34-2004 Addendum g

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

  4. ASHRAE 34-2004 Addendum h

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

  5. ASHRAE 34-2004 Addendum i

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

  6. ASHRAE 34-2004 Addenda v and w

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    Addenda v and w to Standard 34-2004 -- Designation and Safety Classification of Refrigerants (ANSI Approved)