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): GPWVStandard Number: UL 507Edition Date: December 13, 1999Edition Number: 9Section / Paragraph Reference: Section 62.5.9Subject: Markings for Wall and Ceilin
3、g Insert Fans Polymeric HousingsDECISION:62.5.8 A wall or ceiling insert fan or ceiling insert fan/light combination that is provided with a polymerichousing shall be marked, FOR USE IN NON FIRE RATED INSTALLATIONS ONLY. This marking shallbe permanent in letters not less than 2.4 mm (3/32 inch) high
4、, shall be located such that it is visible duringinstallation, and shall be in a contrasting color from the material to which it is applied.62.5.9 A wall or ceiling insert fan or ceiling insert fan/light combination that is provided with a polymerichousing shall be marked, FOR USE IN ONE- AND TWO-FA
5、MILY DWELLINGS ONLY or “NOT FORUSE IN ENVIRONMENTAL AIR-HANDLING SPACES.” This marking shall be permanent in letters notless than 2.4 mm (3/32 inch) high, shall be located such that it is visible during installation and inspectionof wire connections, shall be located near the supply connections, and
6、 shall be in a contrasting color fromthe material to which it is applied.RATIONALE FOR DECISION:The markings required by UL 507 for wall and ceiling insert fans, employing polymeric housing, wereupdated in 2003 to align with the requirements for recessed luminaires in UL 1598, the Standard forLumina
7、ires. These marking requirements are intended to address installations that are unique tocommercial/industrial applications, including fire rated constructions and air-handling spaces. Whenemploying a polymeric housing, there are concerns that installation in fire-rated constructions will reduceor n
8、egate the burn rate. Whereas, contributions to spread of fire and smoke generation are concerns ifthese products were to be installed in air handling spaces. When originally proposed the air handlingspace concerns were considered to be addressed by the one and two family dwelling limitation. However
9、,simply marking the product as “NOT FOR USE IN ENVIRONMENTAL AIR HANDLING SPACES” is asuitable option to address the underlying concern. This proposal further aligns the marking requirementsof UL 507 with those of UL 1598.Copyright 2010 Underwriters Laboratories Inc.UL, in performing its functions i
10、n 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. Certification Requirement Decisions are the opinion of Underwriters Laboratories Inc. inpractically applying the req
11、uirements of the standard. They do not represent formal interpretations of thestandard under American National Standards Institute (ANSI) processes. UL shall not be responsible toanyone for the use of or reliance upon Certification Requirement Decisions by anyone. UL shall not incurany obligation or
12、 liability for damages, including consequential damages, arising out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCertification Requirement Decision is the current version and previously printed copies may be outdated.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis document is published as a service to ULs certification customersSTANDARD NUMBER: UL 507 -2-
