1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNovember 17, 20061SUBJECT 199COUTLINE OF INVESTIGATIONFORPLASTIC ESCUTCHEONS FOR SPRINKLERSIssue Number: 3NOVEMBER 17, 2006Summary of TopicsThis new issue of SU 199C is being issued through ULs e
2、lectronicpublishing system to ensure format uniformity between the PDF andHTML versions of the document. No substantive changes have beenincorporated in the document.The UL Foreword is no longer located within the UL Standard. For informationconcerning the use and application of the requirements con
3、tained in thisStandard, the current version of the UL Foreword is located onULStandardsInfoNet at: http:/ 2006 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNOVEMBER 17, 2006SUBJECT 199C2No Text on This PageUL C
4、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSGENERAL1 Scope .4PERFORMANCE2 General 43 Differential Scanning and Calorimeter Test .44 High Temperature Exposure Test .45 Fire Exposure Test .46 Qualitative Infrared Analysis 5MARKING7 Gener
5、al 5NOVEMBER 17, 2006 SUBJECT 199C 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULGENERAL1 Scope1.1 These requirements cover plastic escutcheons for sprinklers for installation with Listed sprinklers tobe installed in accordance with the Sta
6、ndard NFPA 13.1.2 Sprinkler escutcheons constructed of nonmetallic (plastic) materials are intended for use as a ceilingor wall plate for pendent and horizontal sidewall sprinklers respectively.PERFORMANCE2 General2.1 Sample escutcheons are to be examined for compliance with the construction require
7、ments specifiedon manufacturers drawings including materials, dimensions, and tolerances.3 Differential Scanning and Calorimeter Test3.1 Thermograms of the escutcheon material are to be obtained by means of a duPont 90 degree thermalanalyzer with a Differential Scanning Calorimeter module. A graphic
8、al representation showing the thermalactivity of the sample over a programmed temperature range is to be developed. Sampling methods andinstrument settings used in obtaining these thermograms are recorded in sections of the thermogramrecords.4 High Temperature Exposure Test4.1 There shall be no defo
9、rmation or distortion of the escutcheon material when exposed to the conditionsdescribed in paragraph 4.2. Limited signs of crazing and discoloration of the escutcheon material isacceptable.4.2 Samples of the nonmetallic escutcheons are to be placed in an oven at 320F for 54 days todetermine the sta
10、bility of the material.5 Fire Exposure Test5.1 There shall be no interference to the sprinkler operation nor obstruction to the water distributionpattern caused by the escutcheon when tested as described in paragraph 5.2.5.2 One sample of each plastic escutcheon is to be used for this test. A Listed
11、 sprinkler pendent orhorizontal sidewall style, sample escutcheon and piping are to be installed as intended. The ceiling is toconsist ofa4by4feet gypsum board (1/2 inch thick), with the sprinkler installed at the center of the board.The sprinkler deflector is located 6 inches above a 1 square foot
12、pan containing 2 pints of heptane. Theheptane is ignited and 3 minutes after ignition, water is discharged through the sprinkler at a pressure of7 psig.NOVEMBER 17, 2006SUBJECT 199C4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL6 Qualitative
13、 Infrared Analysis6.1 Qualitative infrared analysis is to be conducted on samples cut from the plastic escutcheon. Theanalysis is to be obtained for follow-up identification purposes.MARKING7 General7.1 An escutcheon shall be marked with the following:a) Name or identifying symbol of the manufacturer or private labeler.b) Model designation.NOVEMBER 17, 2006 SUBJECT 199C 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNOVEMBER 17, 2006SUBJECT 199C6No Text on This Page
