Instead, we have opted for synthetic refrigerants such as CFCs, HCFCs, HFCs, and now HFOs. A number of years ago, ASHRAE Standard 34 introduced a new flammability sub-classification called ‘2L’ and it looks like these ‘2L’ refrigerants are going to be a part of everyday life relatively soon. DATA AND SAFETY CLASSIFICATIONS FOR REFRIGERANT BLENDS Refrigerant Number = 510A Composition (Mass %) = R-E170/600a (88.0/12.0) Composition Tolerances = (±0.5 /±0.5) Safety Group = A3 RCL = 7,300 ppm (v/v), 14 g/m3, 0.87 lb/Mcf Highly Toxic or Toxic Under Code Classification = Neither Add the following to Table D2 in the columns indicated: TABLE D2— Requirements in ANSI/ASHRAE Standard 34-2013, Designation and Safety Classification of Refrigerants, and ANSI/ASHRAE Standard 15-2013, Safety Standard for Refrigeration Systems, complement each other … Please refer to the latest edition of ASHRAE Standard 34 and all published addenda for complete information on refrigerant designations and safety classifications. Data and Safety Classifications for Refrigerant Blends Refrigerant Number =427A Composition (Mass %) = R-32/125/143a/134a/ (15.0/25.0/10.0/50.0) Composition Tolerances = (±2.0/±2.0/±2.0/±2.0) Safety Group =A1 Addendum j to 34-2004 This seminar provides information on the changes to standards that specify requirements for the use of 2L flammable refrigerants. The 2013 editions of ASHRAE’s major refrigerants-related standards, incorporating 41 new addenda, have been published. ASHRAE Membership Info ©2021 This website describes the activities of the ASHRAE Standing Standard Project Committee 34, Designation and Safety Classification of Refrigerants. ASHRAE has established a new 2L subclassification for refrigerant flammability to address new next-genera- ©2021 This website describes the activities of the ASHRAE Standing Standard Project Committee 34, Designation and Safety Classification of Refrigerants. Updates to relevant codes and standards are expected over the next two years. ASHRAE STANDARDASHRAE STANDARD American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. 1791 Tullie Circle NE, Atlanta, GA 30329 www.ashrae.org Designation and Safety Classification of Refrigerants ANSI/ASHRAE Addenda v and w to ANSI/ASHRAE Standard 34-2004 ASHRAE Refrigerant Designations. (Supersedes ANSI/ASHRAE Standard 34-2013) Designation and Safety Classification of Refrigerants . ASHRAE Standard 34, Designation and Safety Classification of Refrigerants, establishes a simple means of referring to common refrigerants rather than by their chemical name, formula, or trade name. ASHRAE is not responsible for this site’s content. ant (R-125, ASHRAE Class 1). Some were also highly reactive, resulting in accidents (e. g., leak, explosion) due to equipment failure, poor maintenance, or human error. PURPOSE. This standard provides an unambiguous system for numbering refrigerants and assigning composition-designating prefixes for refrigerants. Ashrae standard 15 - 994 requires equipment room refrigerant sensors for the _____ safety group? H��WMo�H��W��D�������Ď������h��DzEi2��b����ǹ�i.��0f��e����nJ���`Ħ�VիWU���6��{O� Refrigerant Classifications (Toxicity) •Refrigerants are classified by flammability and toxicity by the ASHRAE Standard 34 (ISO 817 in Europe and some other countries) Toxicity Classification A An OEL of 400ppm or greater B An OEL lessthan 400ppm Refrigerant Classifications (Flammability) Flammability Classification - Current proposal is to co-label and use 1 standard • Standard Purpose - Designation Identify all types of refrigerants short hand - R-123 instead of - 2,2 dichloro-1,1,1-trifluoroethane - Safety • ASHRAE Standard 34 “Designation & Safety Classification of Refrigerants” - New ISO Standard 817 nearly mirrors Std 34. The task of finding a nonflammable refrigerant with good stability was given to Thomas Midgley in 1926.With his associates Albert Leon Henne and Robert Reed McNary, Dr. Midgley observed that the refrigerants then in use c… The ASHRAE Standard 15 documentation establishes procedures for operating equipment and systems when using refrigerants- which are compiled in ASHRAE Standard 34 along with naming and safety classifications based on toxicity and flammability … ASHRAE ADDENDAASHRAE ADDENDA ANSI/ASHRAE Addenda a, b, and d to ANSI/ASHRAE Standard 34-2010 Designation and Safety Classification of Refrigerants Approved by the ASHRAE Standards Committee on June 26, 2010; by the ASHRAE Board of Directors on June 30, 2010; and by the American National Standards Institute on July 1, 2010. torially modify safety classifications in Table 2 and Table B1. �Ɋr ��gs�v��s��#�N`K�%��j�.W{O�����֭ۖ�h�m9�ب��+��GRC$���ŢD�P��B��9IoH���v�:si�/"��%zյ���mCz8JɂH�^���z`j�K�z�/;�/�~��g�W���`px���>#��6|��� ��?�{*���xJ� ]�jm��Q�1T!���";�f���Dl�(�_��e�������u�����8a��u͘~�B�Ќ( ������A��B$��Lk��8�rױ�d՚��F�(ݨrVk{��E:�u����u����u��Fkt��h �A���U593 �� f{4�aky��)��Ѵӳ�{�l4$�[,��i����TRO> z[劐 D���8}K#`l��W�P:���X�k�����f�����A��������h����q��~i. Safety Classification GWP HFC HF O IC C HFO FC ASHRAE STD 34 SAFETY CLASS REFRIGERANT TYPE Industrial Chemical HFC/HFO Blend HFC HFO A1 B2L A2 A3 A2L A1 0–10 10–200 200–1,500 1,500–2,500 > 2,500 A2L A2 A3 B2L Lower Toxicity No Flame Propagation Lower Toxicity Lower Flammability Lower Toxicity Flammable Lower Toxicity Higher Flammability ANSI/ASHRAE Standard 15-1994 uses only the safety classification for the worst case of fraction-ation for refrigerant blends and does not use the as for-mulated safety classification. Addendum c to ANSI/ASHRAE STANDARD 34-2001 1 (This foreword is not part of this addendum but is included for information only.) ASHRAE 15. Tables listing the refrigerant designations, safety classifications and the refrigerant concentration limits are included based on data made available. Toxic effects have been observed in some of the most mundane substances such as water, salt, oxygen, and carbon dioxide but all of these were in extreme quantities. * This list is not intended to be complete or definitive. It also establishes a system for assigning a safety classification to refrigerants based on toxicity and flammability data, and provides a means of determining the refrigerant concentration limit. The 2013 editions of ASHRAE’s major refrigerants-related standards, incorporating 41 new addenda, have been published.. The standard also identifies requirements to apply for designations and safety classifications for refrigerants and to determine refrigerant concentration limits. Group A1 refrigerants are nontoxic and nonflammable with zero ozone depletion potential. FOREWORD This addendum adds a designation of R-418A to the blend R-290/22/152a (1.5/96.0/2.5) with tolerances of (±0.5/±1.0/±0.5)and a safety classification of A2. PHONE: 404-636-8400 FAX: 404-321-5478 E-mail: standards.section@ashrae.org Updated 6/10/2019, Shaping Tomorrow's Built Environment Today, Officers, Directors, Councils, Committees, Staff, Science and Technology for the Built Environment, Instructor-Led Training Seminar and Short Courses, Self-Directed Learning / Group Learning Texts, 2021 Virtual Design and Construction Conference, 2021 ASHRAE Building Performance Analysis Conference, IAQ 2020: Indoor Environmental Quality Performance Approaches, Criteria for Annual Conference City Selection, Winter, Annual, & Virtual Conference Sponsorship Opportunities, tetrafluoromethane (carbon tetrafluoride), R-12/114 (must be specified) (50.0/50.0) (60.0/40.0), R-125/134a/600a/600/601a (50.5/47.0/0.9/1.0/0.6), R-125/143a/134a/600a (63.2/18.0/16.0/2.8), R-32/125/134a/600/601a (8.5/45.0/44.2/1.7/0.6), R-32/125/134a/152a/227ea (31.0/31.0/30.0/3.0/5.0), R-32/125/1234yf/134a/1234ze(E) (26.0/26.0/20.0/21.0/7.0), R-32 /125 /1234yf /134a (24.3/24.7/25.3/25.7), R-32/125/1234yf/134a (25.2/24.3/23.2/27.3), R-32/125/1234yf/134a (20.0/20.0/31.0/29.0), R-32/125/134a/227ea/600/601a (20.0/20.0/53.8/5.0/0.6/0.6), R-32/125/134a/227ea/236fa (20.5/4.0/61.4/13.5/0.6), LTR 11: R-32/1234yf/1234ze(E) (21.0/69.0/10.0), LTR 10: R-32/125/134a/1234ze(E) (12.0/52.0/14.0/22.0), LTR4X10: R-32/125/134a/1234ze(E) (28.0/25.0/20.0/27.0), R-32/125/134a/1234ze(E) (2.5/2.5/46.0/49.0), R-125/143a/134a/227ea/600a (55.0/5.0/32.0/5.0/3.0), R-32/125/143a/134a/600 (9.0/42.0/2.0/44.0/3.0), R-744/32/125/1234yf/134a (6.0/36.0/30.0/14.0/14.0), R-32/125/1234ze(E)/227ea (27.0/27.0/40.0/6.0). While these synthetic … Natural refrigerants and hydrocarbons, such as propane, are some of the cleanest and environmentally friendly options out there for air conditioning and refrigeration. ASHRAE Standard 34-2016, Designation and Classification of Refrigerants, defines flammability in three separate classes: • Class 1 (No Flame Propagation); • Class 2 (Lower Flammability); and • Class 3 (Higher Flammability). Safety Classification of Refrigerants Approved by the ASHRAE Standards Committee on June 25, 2011; by the ASHRAE Board of Directors on June 29, 2011; and by the American National Standards Institute on June 30, 2011. It does not present official positions of the Society nor reflect Society policy. The key and the main difference between what is deemed as safe and what is viewed as toxic is the quantity or concentration needed to cause harm, and in some cases, the duration or repetition of exposure. 1 0 obj<> endobj 2 0 obj<>stream Type of standards US Europe International Refrigeration Safety Classification ASHRAE 34 UL 2182--- ISO 817 For more information on ASHRAE Standard 34 please contact the Assistant Manager of Standards - International or the Manager of Standards at ASHRAE, 1791 Tullie Circle, N.E., Atlanta, GA 30329-2305. ASHRAE Safety Classification: A1 AR5 Global Warming Potential (GWP): 573 ... R1150 is refrigerant grade ethylene (ethene), a natural, or "not in kind", refrigerant suitable for use in very low temperature refrigeration applications, such as those found in LNG liquefaction processes. 1. Eliminating the dual safety classification … According to the Ashrae refrigerant safety classification standard, class ____ refrigerant are most safe. Nearly all of the historically used refrigerants were flammable, toxic, or both. ASHRAE (American Society of Heating, Refrigerating and Air Conditioning Engineers) is a US organization devoted to advancing HVAC/R. Requirements in ANSI/ASHRAE Standard 34-2013, Designation and Safety Classification of Refrigerants, and ANSI/ASHRAE Standard 15-2013, Safety Standard for Refrigeration Systems, complement each other in that Standard 34 describes a shorthand way of naming refrigerants … It should be noted that all substances can be toxic in sufficient amounts. a member of ASHRAE SSPC-15 safety Code for Mechanical Refrigeration, chair- man of the Designation and Nomenclature Subcommittee of SSPC-34 Designation and Safety Classification of Refrigerants, and chairman of the Task Group on Global Climate Change. It does not present official positions of the Society nor reflect Society policy. The American Society of Heating, Refrigerating and Air-Conditioning Engineering (ASHRAE) Standard 34 classifies refrigerants by hazard based on toxicity and flammability. The safety group classification for each refrigerant has two or three alphanumeric characters (e.g., B1 or A2L). These editions can be purchased through the ASHRAE bookstore. •Industry organizations are currently studying appropriate charge size limits and safety criteria for Class 2L and Class 3 refrigerants. %PDF-1.3 %���� The tables contained on this page list approved refrigerant numbers from ANSI/ASHRAE 34-2019, Designation and Safety Classification of Refrigerants, the latest edition of Standard 34, which describes a shorthand way of naming refrigerants and assigns safety classifications based on toxicity and flammability data. The tables contained on this page list approved refrigerant numbers from ANSI/ASHRAE 34-2019, Designation and Safety Classification of Refrigerants, the latest edition of Standard 34, which describes a shorthand way of naming refrigerants and assigns safety classifications based on toxicity and flammability data.*. ASHRAE Standard 34 Table 4-2 lists R-410A as a safety classification group A1. 1.1 This standard is intended to establish a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name. All VRF systems sold in the U.S. market use refrigerant 410A. However, over the past century America has had very little use of natural refrigerants. Recall that the method used to give refrigerants a safety classification consists of a letter (A or B) followed by a number (1 through 3). t{���t�hۯ ����@M�f�9����J;�� �]2r-P>e�ͭ���Ó�e0RA ��2p�UV�ÿ�ˢp�&����+���A3xdi��Х�e��O����ң�^��b���##4����j�S�`�)��ƈ�=�k��5GGH�Ȋ�%ɟE��D �F��$����['���g�e��Ee�#��}�[8b�91g=��2b~a^Nȳ�A(�6���t�*������Y ͷ����R�t�$�eQPLF���8�]�U��L���M�$�j�M�R��_��;�/�\V����D\`���d��_Rm4�3Z`���ݕ�{ ASHRAE 15 Exception 7.2.2 states, “Listed equipment for use in laboratories with more than 100 ft 2 of space per person, regardless of refrigerant safety classification, is exempt from Section 7.2, provided that the equipment is installed in accordance with … Designation and Safety Classification of Refrigerants FOREWORD This addendum adds the single-component refrigerant R- 1132a to Tables 4-1, D-1, and E-1. Examples of some ASHRAE Standards are: Standard 34 – Designation and Safety Classification of Refrigerants; Standard 55 – Thermal Environmental Conditions for Human Occupancy; Standard 62.1 – Ventilation for Acceptable Indoor Air Quality (versions: 2001 and earlier as … These addenda were approved by a Standing Standard Project Committee (SSPC) for which the Standards &��|/v�8����Q$�EJ�HŮ�E��=O�X����2-Fy16�‘���ȑn��k��|� ��]���r�eL��_�{-�*�%\)#��g��ѓ䋷�q�L�%���\����E>v���r��[[؂��߯0�~6,5Ԗ�c����@W��A��E���)c�����N�4����+ǰ�>���/؉˞g�E>tD��|j�{`9��5h�^���˝r5��{ᲁ�xn�W��|Hإ��6�䩬3�GAh3�#ƥba�y��� a�A�+�`����E�\ �'�܀?6/�Ke\Fnk�6(����'i��t����>�(��@I���ˆ��D�"k-"�����/'3,"/V8�&�����o�C\�e��6H�#�x�G~����S8Ӆ���Yź.k����F��l�l~��V3j!���uUm-�y� D|�]L���A�(�ߥS'�bdc�qԌy�|����҂�WE�Ξ�s� ) >�/F����{� �=S���y��H�}/!�����\�3"������3 b��;)Y��|D��䣼,�b�(�RP�1��sd��|�� v�Q3p�$D@SN Further information can be found in the latest version of Standard 34, available in the ASHRAE bookstore, and its published addenda, available on the Standards Addenda page. ASHRAE STANDARDASHRAE STANDARD American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. 1791 Tullie Circle NE, Atlanta, GA 30329 www.ashrae.org Designation and Safety Classification of Refrigerants ANSI/ASHRAE Addenda i, j, and k to ANSI/ASHRAE … Refrigerant 410A is heavier than air and will displace oxygen. ASHRAE assigns numbers and safety classification to the refrigerants based on toxicity and flammability data submitted by the refrigerant’s producer. Designation and Safety Classification of Refrigerants (Supersedes ANSI/ASHRAE Standard 34-2016) The 2019 edition incorporates the 24 approved and published addenda to Standard 34-2016. All refrigerant safety groups. flammability safety classification, 2L, in ASHRAE Standard 34. •Flammable or mildly flammable refrigerants will only be allowed for new systems; retrofit solutions will need to be non-flammable. 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