1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 2043 Fire Test for Heat and Visible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling SpacesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
2、OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Fire Test for Heat and Visible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces, U
3、L 2043 Fourth Edition, Dated October 2, 2013 SUMMARY OF TOPICS This new edition of UL 2043 has been revised and published to: Reinforce Code language in New 1.4; Revise the Title of Section 3 to Test Equipment and Instrumentation; Revise Section 3, 6.1.3, 6.2.2, 6.2.4, and Section 7 for clarity, cor
4、rectness and consistency with existing testing practices and procedures; Relocate Normalized Optical Density to Appendix B; Make clarications to the mounting procedures in Appendix A; and, Reect ANSI approval of the Standard. The new and revised requirements are substantially in accordance with Prop
5、osal(s) on this subject dated June 14, 2013. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standa
6、rd as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost s
7、avings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, r
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9、oduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note followin
10、g the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. OCTOBER 2, 2013 UL 2043 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRI
11、BUTION WITHOUT PERMISSION FROM UL OCTOBER 2, 2013 UL 2043 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 2, 2013 1 UL 2043 Standard for Fire Test for Heat and Visible Smoke Release for Discrete Products and T
12、heir Accessories Installed in Air-Handling Spaces First Edition November, 1992 Second Edition December, 1996 Third Edition August, 2008 Fourth Edition October 2, 2013 This ANSI/UL Standard for Safety consists of the Fourth Edition. The most recent designation of ANSI/UL 2043 as an American National
13、Standard (ANSI) occurred on October 2, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted v
14、ia a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regardin
15、g those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 2043-2013UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 2, 2013 UL 2043 2 No Text on This PageUL COPYRIGHTED
16、 MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 General 4 2.1 Units of measurement .4 2.2 Undated reference 5 PERFORMANCE 3 Test Equipment and Instrumentation 5 3.1 General .5 3.2 Ignition source .5 3.3 Test frame enclos
17、ure .5 3.4 Collection hood and exhaust duct 5 3.5 Velocity measuring instruments 7 3.6 Gas sampling and analysis equipment 7 3.7 Smoke measuring instruments .9 3.8 Data acquisition .10 3.9 Photographic and video equipment 10 4 Pretest Calibration .10 4.1 General 10 4.2 Gas analyzers 10 4.3 Heat rele
18、ase rate 11 4.4 Photometer system 12 5 Test Specimens .12 6 Test Procedure 12 6.1 Initial preparation 12 6.2 Procedure 12 7 Heat Release Calculations 13 7.1 General 13 7.2 Heat release rate 13 7.3 Smoke release rate 14 7.4 Total smoke released 15 8 Report 15 9 Acceptance Criteria 16 APPENDIX A GUIDE
19、 TO MOUNTING METHODS A1 Introduction A1 A2 Loudspeakers, Loudspeaker Assemblies and Their Accessories .A1 A2.1 Test frame enclosure and burner A1 A2.2 Ceiling mounted product A2 A2.3 Suspended in air handling space product .A2 A3 Wire Positioning Devices Plastic Cable Ties .A2 APPENDIX B NORMALIZED
20、OPTICAL DENSITY B1 General .B1 OCTOBER 2, 2013 UL 2043 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 This is a re test method for determining the re performance response of discrete products (including, but not li
21、mited to electrical, mechanical, and plumbing equipment) intended to be installed in air handling spaces, such as above suspended ceilings or below oors. These products are subjected to an open ame ignition source and evaluated using a product calorimeter. 1.2 This test may be used to determine re p
22、erformance and smoke characteristics of discrete, non-continuous building materials where the Test for Surface Burning Characteristics of Building Materials, UL 723, is not applicable. 1.3 The purpose of this test is to determine the rate of heat release and the rate of smoke release of the burning
23、product samples as they relate to the requirements for re-resistant and low-smoke-producing characteristics in accordance with the provisions of the following codes: National Electric Code, NFPA 70; International Mechanical Code, NFPA 5000; Standard for the Installation of Air Conditioning and Venti
24、lating Systems, NFPA 90A. 1.4 This test method does not provide information on the performance of products in other re or test conditions. This test does not investigate the toxicity of the products of combustion. 1.5 This test does not cover the constructional, electrical, or other performance requ
25、irements of the product. 1.6 The Codes noted in 1.3 reference the use of UL 2043 for electrical equipment with combustible outer enclosures. Specically, the National Electrical Code and the International Mechanical Code expressly state that electrical equipment with metal enclosures shall be permitt
26、ed. Consequently, UL 2043 is not intended to apply to electrical equipment with metal outer enclosures unless otherwise specied by end-product-standard requirements. 2 General 2.1 Units of measurement 2.1.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory
27、or approximate information. OCTOBER 2, 2013 UL 2043 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.2 Undated reference 2.2.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted
28、as referring to the latest edition of that code or standard. PERFORMANCE 3 Test Equipment and Instrumentation 3.1 General 3.1.1 The apparatus includes the following main components: an ignition source, a steel angle frame enclosure, a collection hood and exhaust duct, velocity, and temperature measu
29、ring instrumentation, gas sampling and analysis equipment, smoke measuring instruments, and a data acquisition system. Note: Standard Practice for Full-Scale Oxygen Consumption Calorimetry Fire Tests, ASTM E2067, provides guidance for acceptable test equipment and instrumentation. 3.1.2 The test bui
30、lding in which the test apparatus is located is to have vents for the discharge of the combustion products and have provision for fresh air intake. 3.2 Ignition source 3.2.1 The propane gas burner used as the ignition source is to have dimensions of 12-1/2 by 12-1/2 by 4 inches 1/4 inch (318 by 318
31、by 102 mm 76 mm). The burner is to be constructed of nominal 1/4 inch (6.4 mm) steel with a nominal 1/2 inch (12.7 mm) diameter steel gas inlet pipe. The pipe is to extend into the burner 5 inches (127 mm) nominal and a 6 inch (152 mm) nominal metal diffuser plate is to be positioned over the outlet
32、 of the gas pipe. A ne mesh metal screen is to be placed on top of the diffuser plate. The burner eld is to be lled with silica sand. The ignition source is illustrated in Figure 3.1. 3.3 Test frame enclosure 3.3.1 The test frame enclosure is to be as described in Appendix A Guide to Mounting Method
33、s. 3.4 Collection hood and exhaust duct 3.4.1 The collection hood is to be installed centrally above the test specimen. The face dimensions of the hood are to be at least 8 by 8 feet (2.4 by 2.4 m), and the depth is to be at least 3.5 feet (1.1 m). The hood is to exhaust into a plenum havinga3b y3fo
34、ot (0.9 by 0.9 m) cross section (see Figure 3.2). The lower edge of the collection hood is to be positioned so that the hood collects all products of combustion. 3.4.2 The exhaust duct connected to the plenum is to be at least 16 inches (406 mm) in diameter. The duct is to run horizontally at least
35、10 times the duct diameter downstream from the last turn in the duct prior to location of instrumentation, in order to provide for a fully developed turbulent gas ow. Mixing vanes are to be installed in the duct if concentration gradients are found to exist. The outlet of the exhaust duct is to be d
36、irected to smoke abatement equipment. OCTOBER 2, 2013 UL 2043 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 3.1 Propane gas burner 1. NOM. 1/2 I.D. STL. PIPE 4. 12 x1 2 x4 DEEP STL. PAN (* = INSIDE DIMENSIONS.) 1/4 THICK STL. 2. DI
37、FFUSER PLATE 5. STEEL WOOL 3. SAND (NOT SHOWN. FILLS THE 12 x1 2 x4 PAN, POURED OVER STEEL WOOL AND DIFFUSER PLATE.) NOTE: 1 inch = 25.4 mm OCTOBER 2, 2013 UL 2043 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.4.3 The exhaust system is
38、to have sufficient draft to collect all products of combustion developed by the burning sample. The exhaust ow is to be capable of being varied from a minimum of 1000 to at least 5000 cubic feet per minute (0.47 to 2.4 m 3 /s). 3.4.4 An alternate exhaust system design is not prohibited from being us
39、ed if it has been shown to produce equivalent results. Equivalency is demonstrated by meeting the requirements specied in Pretest Calibration, Section 4. 3.5 Velocity measuring instruments 3.5.1 The velocity in the exhaust duct is to be determined by measuring the differential pressure in the ow pat
40、h with the use of a bidirectional probe as shown in Figure 3.3, connected to an electronic pressure gauge or an equivalent measuring system. The probe is to consist of a stainless steel cylinder with a solid diaphragm in the center that divides the probe into two chambers. The probe is to have a cyl
41、inder length nominally two times its outside diameter, with a minimum length of 1.0 inch (25 mm) and a maximum length of 2.0 inches (50 mm). The pressure taps on either side of the diaphragm are to support the probe. 3.5.2 The axis of the probe is to be located at the approximate centerline of the d
42、uct a minimum of 10 times the duct diameter downstream from the last turn in the duct. The probe shall not be positioned at other locations except where the alternative position has been shown to provide equivalent results. The pressure taps are to be connected to a pressure transducer with a minimu
43、m resolution of 0.001 inch water (0.25 Pa). 3.5.3 The temperature of the exhaust gas is to be measured at the approximate same location as the probe at the centerline of the duct with a 28 AWG (0.08 mm 2 ) Type K thermocouple with an inconel sheath. 3.6 Gas sampling and analysis equipment 3.6.1 A st
44、ainless steel gas sampling tube is to be located downstream from the bidirectional probe, where the exhaust duct ow is well mixed (turbulent ow) for determining the oxygen (and optionally carbon dioxide, and carbon monoxide) concentrations of the exhaust gas as a function of time. A lter and cold tr
45、ap is to be placed in-line ahead of the analyzer to remove particulates and water. The oxygen analyzer a is to be of the paramagnetic type. a Standard Practice for Full-Scale Oxygen Consumption Calorimetry Fire Tests, ASTM E2067 contains procedures for evaluating the suitability of oxygen analyzers
46、for heat release measurement. All analyzers shall have a measurement uncertainty of 50 ppm (k=1) or less. This is generated text for gtxt. OCTOBER 2, 2013 UL 2043 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 3.2 Collection hood an
47、d exhaust duct OCTOBER 2, 2013 UL 2043 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.7 Smoke measuring instruments 3.7.1 The photometer system is to consist of a light source and photoelectric cell that is to be mounted on a horizontal
48、section of the duct. The duct is to run horizontally at least 10 times the duct diameter downstream from the last turn in the duct prior to location of instrumentation, in order to provide for a fully developed turbulent gas ow. The photometer system shall not be positioned at another location excep
49、t where the alternative position has been shown to provide equivalent results. The light beam is to be directed along the diameter of the duct. A photoelectric cell whose output is directly proportional to the amount of light received is to be mounted opposite the light source and connected to a recording device having an accuracy within 1 percent of full-scale for indicating changes in the attenuation of incident light resulting from the passage from smoke, particulate an
