See portion II.A.1 of the preamble for track record about the retail foodstuff refrigeration close-use and notably for the stand-by yourself units and refrigerated foodstuff processing and dispensing equipment conclude-use types.
Whilst EPA isn't granting the commenters' request for listing R-454B and HFC-32 broadly for all IPR, which includes industrial, health-related, and laboratory applications in IPR, we acknowledge that these refrigerants existing strengths in effectiveness for IPR running at reduced temperatures. Consequently, dependant on feedback obtained regarding the technological specifications for IPR to succeed in incredibly cold temperatures, EPA is listing HFC-32 and R-454B as acceptable, issue to implement problems, for IPR, as proposed, using a use condition that provides to be used in IPR chillers. EPA is additionally creating a modification into the proposed use issue for HFC-32 and R-454B in IPR that will allow for for use in non-chiller IPR with the refrigerant temperature coming into the evaporator under or equivalent to −30 °C. EPA is achieving this by modifying the use affliction for HFC-32 and R-454B in IPR, to ensure that it offers for use of HFC-32 and R-454B in both equally chillers for industrial system refrigeration As well as in gear Using the refrigerant temperature entering the evaporator less than or equivalent to −thirty °C. Although R-454B and HFC-32 have bigger GWPs than another refrigerants staying outlined as suitable in this action, listing both of these refrigerants as acceptable with use problems that provide for use at decreased temperatures still contributes to decreased risk for the surroundings and human health and fitness simply because these refrigerants are reduced chance than what is at present in use.
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A2L or A3) refrigerants. If companies opt for to include the pink triangle image instructed inside the 2nd edition of UL 60335-two-89, then all necessities, such as people who seek advice from placement and sizing, should be adopted appropriately. If makers select to include the red diamond image proposed by EPA, all of the following necessities, such as people who make reference to placement and dimension, have to be followed appropriately.
The regulatory textual content of the ultimate decisions appears in tables at the end of this document and is also being codified in appendix Y to forty CFR section 82, subpart G. The ultimate regulatory text is made up of listing decisions for that finish-use talked over Within this segment.
The second situation where usage of refrigerants is probably going to get far more constrained, and as a consequence where EPA is listing R-454A, is for use within the significant-temperature facet of cascade units employed for non-chiller IPR products (and While using the refrigerant temperature getting into the evaporator higher than −30 °C). As talked about in part II.A.one of the preamble, “History on retail food refrigeration,” each side of a cascade method makes use of a distinct refrigerant that is certainly most suitable with the presented temperature variety. Bigger temperature programs, or even the “superior-temperature aspect,” have typically applied HFCs like a refrigerant; however, it truly is technologically achievable and is now additional common to utilize ammonia while in the significant-temperature facet.
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EPA is giving added details related to these listings. Considering that this additional information and facts will not be Portion of the regulatory decision less than SNAP, these statements will not be binding to be used in the substitute underneath the SNAP method.
See response in portion II.A.six of this preamble concerning the use ailment restricting use of R-454A to machines with demand measurements less than two hundred lbs. With regard to EPA's evaluation of CAA requirements for possibilities being deemed in light of Over-all chance reduction and the availability of solutions, sections II.
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The discharge and/or disposal of numerous refrigerant substitutes, which include R-290, are managed by other authorities together with various specifications and Condition and local constructing codes. The sector consensus basic safety typical UL 60335-two-89, which EPA is incorporating by reference in use disorders during the SNAP listing for R-290 in refrigerated food processing and dispensing equipment, is one of these standards, and industry also applies the standard ASHRAE fifteen. Code-earning corporations, including the Intercontinental Code Council (ICC), are in the whole process of updating references to The latest sector expectations that deal with use of R-290 along with other flammable refrigerants inside the International Building Code (IBC).
b. Right away under 5.a or at the very best in the marking if 5.a just isn't necessary: “Bare minimum area location (working or storage), Y m2 (Z ft2 )”. The terms “Y” and “Z” shall be replaced from the numeric region as calculated per the UL Standard. Take note which the formatting Here's a bit diverse as opposed to UL Normal; especially, the area in Inch-Pound models is put in parentheses along with the phrase “and” continues to be replaced via the opening parenthesis.