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  • Standards Addenda - ASHRAE
    View addenda for ASHRAE Standards, including continuous maintenance standards, available here online in PDF format
  • ASHRAE Standard 15
    Addendum a to ASHRAE 34-2022 corrected RCL LFL data for several refrigerants and added burning velocity data for flammable refrigerants Refrig system classifications
  • Safety Standard for Refrigeration Systems - ASHRAE
    18 addenda were published to the 2022 edition of ASHRAE Standard 15, which were rolled into the 2024 edition of ASHRAE Standard 15 All addenda to the current and previous editions of the standard are available for free download from ASHRAE
  • Ashrae 15-2022 (Packaged Standard 34-2022) | PDF | Ventilation . . .
    Highlights include updates to overpressure protection (Addendum a), use of small amounts of non-A1 refrigerants in equipment listed to product safety standards (Addendum c), major revisions to piping requirements (Addendum e), introduction of the concept of releasable charge (Addendum g), clarification of connected spaces (Addendum g), major
  • ASHRAE Standards 15 and 34 for VRV VRF Systems
    VRV Systems can be properly selected and designed adhering to ASHRAE Safety Standard 15, and Standard 34 Since Standard 15 is an application based standard, not an equipment design guide, engineering judgment can be required when applying the standard It is recommended to use the step-by-step approach, described in this document in
  • Understanding ASHRAE Standard 15 Requirements for Direct Systems in . . .
    Many of the changes in the 2022 edition of Standard 15 were focused on establishing requirements for the use of 2L flammable refrigerants What is a “direct system”? “is one in which a secondary coolant cooled or heated by the refrigerating system is circulated to the air or other substance to be cooled or heated
  • ANSI ASHRAE Addendum s to ANSI ASHRAE Standard 34-2016
    Addendum s adds the single-component refrigerant R-1336mzz(E) to Tables 4-1, D-1, and E-1 Note: In this addendum, changes to the current standard are indicated in the text by underlining (for additions) and strikethrough (for deletions) unless the instructions specifi-cally mention some other means of indicating the changes
  • ANSI ASHRAE Addendum a to ANSI ASHRAE Standard 15-2019
    In addition, this addendum intro-duces a method for calculating pressure relief capacity factors for refrigerants not included in the standard or for design pressures for current refrigerants that are outside of the ranges of pressures listed in the pressure relief capacity factor tables
  • ANSI ASHRAE Addendum f to ANSI ASHRAE Standard 34-2019
    Addendum f adds LFL data to Tables 4-1 and 4-2 Note: In this addendum, changes to the current standard are indicated in the text by under-lining (for additions) and strikethrough (for deletions) unless the instructions specifically men-tion some other means of indicating the changes Modify Tables 4-1 and 4-2 as shown
  • ANSI ASHRAE Addendum ae to ANSI ASHRAE Standard 34-2013
    ANSI ASHRAE Addendum ae to ANSI ASHRAE Standard 34-2013 Designation and Safety Classification of Refrigerants Approved by the ASHRAE Standards Committee on June 25, 2016; by the ASHRAE Board of Directors on June 29, 2016; and by the American National Standards Institute on July 27, 2016





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