UL 2158A-2013 UL Standard for Safety Clothes Dryer Transition Duct (First Edition Reprint with revisions through and including April 18 2017)《电动衣服干燥机》.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 2158A Clothes Dryer Transition DuctUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE

2、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Clothes Dryer Transition Duct, UL 2158A First Edition, Dated December 11, 2013 Summary of Topics This First Edition of ANSI/UL 2158A includes a rst time ANSI approval. The requirements are substantially in accordanc

3、e with Proposal(s) on this subject dated July 26, 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

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5、ots, lost savings, 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

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7、iation introduced 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 no

8、te following 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that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. DECEMBER 11, 2013 UL 2158A tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC

9、TION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 11, 2013 UL 2158A tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 11, 2013 1 UL 2158A Standard for Clothes Dryer Transition Duct Prior to the rst editi

10、on, the requirements for the products covered by this standard were included in the Outline of Investigation for Clothes Dryer Transition Duct, UL 2158A. First Edition December 11, 2013 This ANSI/UL Standard for Safety consists of the First Edition. The most recent designation of ANSI/UL 2158A as an

11、 American National Standard (ANSI) occurred on December 11, 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

12、should be submitted via 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

13、, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 2158A-2013UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 11, 2013 CLOTHES DRYER TRANSI

14、TION DUCT - UL 2158A 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 Components 4 3 Units of Measurement .4 4 Undated References 5 5 Glossary .5 CONSTRUCTION 6 General 5 7 Corrosion Re

15、sistance 6 PERFORMANCE 8 Test Program .6 9 Surface Burning Test 6 10 Flame Resistance Test .7 11 Bending Test 8 12 Corrosion Resistance Test 8 12.1 General 8 12.2 Test for zinc-coated steel .8 12.3 Tests for coated steel (other than zinc-coated steel) .9 13 Puncture Test 10 14 Impact Test 12 15 Tens

16、ion Test .15 16 Torsion Test .15 MARKINGS 17 General 16 INSTRUCTIONS 18 Installation Instructions 16 19 User Instructions 17 DECEMBER 11, 2013 CLOTHES DRYER TRANSITION DUCT - UL 2158A 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUC

17、TION 1 Scope 1.1 These requirements apply to clothes dryer transition ducts intended for venting household and commercial clothes dryers. 1.2 The ducts covered by these requirements are intended to connect a clothes dryer to an existing permanent duct provided as a part of the building structure. Th

18、e duct is intended to vent lint and humid air from drying clothes. 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for that component. 2.2 A component is not required to comply with the specic requirement that: a) Invo

19、lves a feature or characteristic not required in the application of the component in the product covered by this standard; or b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.4 Specic com

20、ponents are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 3 Units of Measurement 3.1 V

21、alues stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 3.2 Unless indicated otherwise, all voltage and current values mentioned in this standard are rms. DECEMBER 11, 2013 CLOTHES DRYER TRANSITION DUCT - UL 2158A 4UL COPYRIGHTED MATERI

22、AL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 5 Glossary 5.1 F

23、or the purpose of this standard the following denitions apply. 5.2 CLOTHES DRYER An appliance used to dry wet laundry by means of heat derived from the combustion of fuel, electric heating elements, or steam. 5.3 CLOTHES DRYER TRANSITION DUCT A passageway assembled in a factory for conveying the exh

24、aust of a clothes dryer to the venting system installed in the building structure. CONSTRUCTION 6 General 6.1 A transition duct shall be metal. Exception: Nonmetallic materials may be employed if constructed in layers in combination with metal. Layered constructions shall comply with the Surface Bur

25、ning Test, Section 9. 6.2 Flexible ducts shall be factory-made, either as a continuous piece or as a 2-part sectional assembly. Flexible ducts shall not exceed 8 ft (2.4 m) in length. 6.3 Sheet metal collars and clamps having a minimum thickness as shown in Table 6.1 may be provided as part of the a

26、ssembly of the transition clothes dryer ducts. When collars and clamps are included as part of the assembly, the intended nal assembly shall be evaluated as specied in the individual sections of this standard. Table 6.1 Minimum thickness Galvanized steel Aluminum (minimum thickness, in) (minimum thi

27、ckness, in) 0.013 0.016 DECEMBER 11, 2013 CLOTHES DRYER TRANSITION DUCT - UL 2158A 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7 Corrosion Resistance 7.1 Iron and steel parts other than stainless steel shall be provided with corrosion p

28、rotection by enamelling, galvanizing, plating, or other equivalent means. Aluminum alloy parts shall be alloy 1100, 3003, or an alloy that has been found to have equivalent resistance to corrosion. 7.2 The corrosion resistant coating shall be that providing protection against atmospheric corrosion a

29、t least equivalent to steel having a uniform coating of zinc of not less than 0.3 ounce per square foot (1 g/mm 2 ) of surface area as determined in accordance with 12.2.1. PERFORMANCE 8 Test Program 8.1 Table 8.1 indicates the tests applicable to rigid and exible type duct. Table 8.1 Test program S

30、ection Test Type Rigid Flexible 9 Surface Burning Yes Yes 10 Flame Resistance Yes Yes 11 Bending No Yes 12 Corrosion Resistance Yes Yes 13 Puncture Yes Yes 14 Impact Yes Yes 15 Tension No Yes 16 Torsion No Yes 9 Surface Burning Test 9.1 With reference to the Exception to 6.1, representative samples

31、of duct employing nonmetallic materials layered with metal shall have surface burning characteristics of not over 25 without evidence of continued progressive combustion (ame spread). The tests for surface burning characteristics are to be conducted as specied in the Standard for Tests for Surface B

32、urning Characteristics of Building Materials, UL 723. 9.2 Samples are to be positioned in the 25 feet (7.62 m) long re test chamber specied in the Standard for Tests for Surface Burning Characteristics of Building Materials, UL 723. If the duct is sufficiently rigid, no supplemental supports are to

33、be used. When necessary, due to characteristics of a duct that may affect the conduct of the test, 1/4 inch (6.4 mm) diameter steel rods may be used to support the duct. If supporting rods are used, they are to be spaced between 2 feet and 4 feet (0.6 m and 1.2 m) apart as required for support of th

34、e samples. 9.3 If the inside and outside surfaces of a duct are of different composition, tests for surface burning characteristics are to be conducted by exposing rst one side and then the other to the test conditions, using different samples for each exposure. DECEMBER 11, 2013 CLOTHES DRYER TRANS

35、ITION DUCT - UL 2158A 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 10 Flame Resistance Test 10.1 Duct samples shall be subjected to the 5-inch (127 mm) ame test described in 10.2 10.4. As a result of the test: a) The duct shall not conti

36、nue to burn for more than 1 minute after the fth 5-second application of the test ame, b) Flaming drops or aming or glowing particles shall not be emitted by the test sample at any time during the test that ignite the surgical cotton below the test specimen, and c) The duct shall not exhibit burn-th

37、rough. Exception: A duct that is constructed of materials that complies with the 5VA test specied in the Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL 94, need not be subjected to this test. 10.2 A Bunsen or Tirrill burner with a tube length of 3.94

38、 0.39 inches (100 10 mm) and an inside diameter of 0.374 0.012 inch (9.5 0.3 mm), is to be placed remote from the specimen, ignited, and adjusted so that when the burner is in a vertical position, the overall height of the ame is 5 inches (127 mm), and the height of the inner blue cone is 1.5 inches

39、 (38 mm). The tube shall not be equipped with end attachments such as a stabilizer. 10.3 The duct, minimum 12 inches (305 mm) in length, is to be mounted vertically, in a draft-free test chamber, enclosure, or laboratory hood. A layer of surgical cotton is to be located 12 inches (305 mm) below the

40、point of application of the test ame. The 5-inch (127 mm) ame is to be applied to the inside surface at an angle of approximately 20 degrees, in so far as possible, from the vertical so that the tip of the blue cone touches the duct. The test ame is to be applied to the center of the duct and to any

41、 joints or seams on three different samples. A supply of technical-grade methane gas is to be used with a regulator and meter for uniform gas ow. Exception: Natural gas having a heat content of approximately 1000 Btu/ft 3 (37 Mj/m 3 ) at 73F (23C) may be used. 10.4 The ame is to be applied for 5 sec

42、onds and removed for 5 seconds. The operation is to be repeated until the sample has been subjected to ve applications of the test ame. DECEMBER 11, 2013 CLOTHES DRYER TRANSITION DUCT - UL 2158A 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM

43、UL 11 Bending Test 11.1 A exible duct shall be bent through a 180-degree arc over a mandrel having a diameter equal to the inside diameter of the duct in accordance with 11.2 11.3. As a result of the test, the sample shall not rupture, break, tear, rip, or separate; any reduction in internal cross-s

44、ectional area shall not exceed 20 percent at any time during the test; and there shall be no evidence of other damage to the sample which would cause it to be unacceptable for further use. 11.2 Previously untested samples are to be tested. Samples, 8 feet (2.43 m) long, are to be selected. Acceptabl

45、e steel clamps or collars, if not part of the assembly, are to be attached to each end of the test sample in accordance with the manufacturers instructions. One end of the test sample is to be retained in place and the sample positioned adjacent to the test mandrel so that the center joint of the sa

46、mple is not located in the area to be subjected to bending. The sample is to be bent through a 180-degree arc around the test mandrel. 11.3 The test is to be repeated ve times, and each time the sample is to be returned to its original position. Observations are to be made during and following the t

47、est. 12 Corrosion Resistance Test 12.1 General 12.1.1 A duct which may have the protective coating damaged or the effectiveness reduced by the manufacturing process is to be tested after being subjected to such process. 12.2 Test for zinc-coated steel 12.2.1 To determine compliance with 7.2, the amo

48、unt of zinc coating is to be determined in accordance with the Standard Method of Test for Weight of Coating on Zinc-Coated (Galvanized) Iron or Steel Articles, ASTM A90. 12.2.2 If aking or cracking of the zinc coating at the outside radius of a bent or formed section is visible at 25 power magnicat

49、ion, or if the coating is scored, the zinc coating is considered to be damaged and is unacceptable. DECEMBER 11, 2013 CLOTHES DRYER TRANSITION DUCT - UL 2158A 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 12.3 Tests for coated steel (other than zinc-coated steel) 12.3.1 General 12.3.1.1 The tests in 12.3.2 12.3.3.1 are to be conducted on coated materials other than galvanized steel after the material has been formed for u