UL 207 CRD-2013 UL Standard for Safety Refrigerant-Containing Components and Accessories Nonelectrical - Section Paragraph Reference 12 1 2 12 1 2 1 12 1 4 C 12 1 6 22 11 Subject .pdf
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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): SEHU, SEYW, SFAU2, SFCS, SFJQ, SKXY, SLPR, SLRG,SLSV, SMGT, SMUR, SNHZ, SNLT, SNOY, SNVX, SOJVStandard Number: UL 207Standard Title: Standard for Refrigerant
3、-Containing Components and Accessories,NonelectricalEdition Date: April 20, 2009Edition Number: 8Section / Paragraph Reference: 12.1.2, 12.1.2.1, 12.1.4 12.1.6, 22.11Subject: Revisions to Permit Certain High-Side Components Based on a ReducedTest PressureSupersedes prior Certification Requirement De
4、cision issued September 13, 2013DECISION:12.1 Refrigerant-containing parts: high side12.1.2 Except as specified in 12.1.4, aA component or section of a component exposed to high sidepressure shall: withstand without failure a pressure equal to the higher of five times the:a) Refrigerant minimum high
5、 side design pressure specified in 11.2(b) or (c);b) Design pressure marked on the component;c) Start-to-discharge pressure of the relief device, if the component is intended to be protectedby a pressure relief device; ord) Nominal rated rupture pressure (see 3.4.16.1) of a rupture member.a) Withsta
6、nd without failure a pressure equal to five times the higher of the pressures specifiedin 12.1.2.1; or,b) Comply with the Fatigue Test in Clause 14; or,c) Withstand without failure a pressure equal to three times the higher of the pressuresspecified in 12.1.2.1, if the component additionally complie
7、s with 12.1.4.12.1.2.1 In reference to 12.1.2(a) and (c), the test pressures shall be based on the higher of the following:a) Refrigerant minimum high side design pressure specified in 11.2(b) or (c);b) Design pressure marked on the component;c) Start-to-discharge pressure of the relief device, if t
8、he component is intended to be protectedby a pressure relief device; ord) Nominal rated rupture pressure (see 3.4.16.1) of a rupture member.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL12.1.4 If the test specified in 12.1.2 is not conducted
9、, a component shall be subjected to the Fatigue Test,Clause 14.A refrigerant containing component complying with 12.1.2(c), shall be intended for use in arefrigeration system in which the critical pressure of the refrigerant is designed to be exceeded. Inaddition, the component shall be provided wit
10、h either:a) A pressure relief valve complying with Clause 9; orb) The marking specified in 22.10.1.12.1.5 In addition to complying with 12.1.2 or 12.1.4, a component which is provided with a fusible plugshall withstand without failure a pressure equal to the smaller of 2-1/2 times the:a) Vapor press
11、ure of the refrigerant at the relief temperature of the fusible plug, orb) Critical pressure of the refrigerant used.12.1.6 In reference to 12.1.2(b) 12.1.4, unless the Fatigue Test in Section 14 is used for determiningcompliance, refrigerant-containing components intended to utilize carbon dioxide
12、(R744) in a secondaryloop or a cascade system shall have an ultimate strength of not less than five times the start-to-dischargevalue of the pressure relief valve and not less than 2500 psig (17238 kPa).MARKING22 General22.10.1 The marking referenced in 12.1.4(b) shall be legibly and permanently mar
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