1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared by UL LLC. It is normative for the applicable ULProduct Certification Program(
2、s); however, it is currently not part of the UL Standard(s) referencedbelow.Product Category (CCN): SGKW, SFWYStandard Number: UL 471Standard Title: Standard for Commercial Refrigerators and FreezersEdition Date: November 24, 2010Edition Number: 10Section / Paragraph Reference: Supplement SBSubject:
3、 SB5.1 Leakage TestDECISION:1.2 These requirements apply to unitary and remote commercial refrigerators and freezers. For thepurposes of this standard, commercial refrigerators and freezers include equipment, such as displaycases, reach-in cabinets, meat cases, drop-in appliances, frozen food and me
4、rchandising cabinets,beverage coolers, beverage cooler-dispensers, food service carts, ice cream cabinets, soda fountainunits, door panel assemblies, laboratory refrigerators and freezers, and processing liquid coolers.3.38 Drop-In Appliances -Refrigeration equipment intended to be installed in a cu
5、stom food equipmentcabinet that is shared with other installed commercial cooking and refrigeration equipment.SB5.1.1.2 The refrigerator is to be installed in accordance with the manufacturers instructions; see 44.5. Drop-in appliances that are intended to be installed in custom installations (such
6、as custom foodequipment) shall be installed in a test enclosure fabricated in accordance with the manufacturersinstructions.SB5.1.4.6.1 For drop-in appliances where potential flammable refrigerant ignition sources from equipmentthat may be installed adjacent to the drop-in appliance, the concentrati
7、on of leaked refrigerant shall alsobe measured where these potential ignition sources may be located. Examples of such ignition sourcesare power switches, light switches, GFCIs, and gas igniters, See also SB5.1.1.2.RATIONALE FOR DECISION:Currently the test enclosure and installation requirements for
8、 the test sample are not specified inSupplement SB. The unit under test shall be installed per manufacturers instructions and/or clearancesto surrounding walls. For drop-in appliances that are intended to be installed in custom installations (suchas custom food equipment), a test enclosure shall be
9、fabricated per manufacturers instructions. Inaddition to the ignition source components that are part of the equipment, LFL levels shall also bemeasured in areas where flammable refrigerant ignition source components that are not part of theequipment may be installed in the custom cabinet (such as G
10、FCI, remote controllers, light or powerswitches, etc.).Copyright 2018 UL LLCUL LLC, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Cer
11、tification Requirement Decisions are the opinion of UL LLC. in practically applying therequirements of the standard. They do not represent formal interpretations of the standard underAmerican National Standards Institute (ANSI) processes. UL LLC shall not be responsible to anyone forUL COPYRIGHTED M
12、ATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULthe use of or reliance upon Certification Requirement Decisions by anyone. UL LLC shall not incur anyobligation or liability for damages, including consequential damages, arising out of or in connection withthe use or reliance upon Certification Requirement Decisions. The electronic version of the CertificationRequirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 471 -2-
