1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 959 Medium Heat Appliance Factory-Built ChimneysUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZ
2、ED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Medium Heat Appliance Factory-Built Chimneys, UL 959 Ninth Edition, Dated December 17, 2010 Summary of Topics This revision of ANSI/UL 959 is being issued to update the title page to reect reaffirmation
3、 of ANSI approval. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publicatio
4、n or the date on which the changed requirement becomes effective. The revised requirements are substantially in accordance with Proposal(s) on this subject dated April 25, 2014. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any fo
5、rm by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard 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. I
6、n no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, 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 advi
7、sed of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any
8、loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation 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 parag
9、raphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note 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
10、 SUPERSEDED REQUIREMENTS notice. JUNE 12, 2014 UL 959 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 12, 2014 UL 959 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PER
11、MISSION FROM UL DECEMBER 17, 2010 (Title Page Reprinted: June 12, 2014) 1 UL 959 Standard for Medium Heat Appliance Factory-Built Chimneys First Edition May, 1969 Second Edition January, 1971 Third Edition June, 1975 Fourth Edition October, 1976 Fifth Edition February, 1986 Sixth Edition October, 19
12、94 Seventh Edition December, 1995 Eighth Edition May, 2001 Ninth Edition December 17, 2010 This ANSI/UL Standard for Safety consists of the Ninth Edition including revisions through June 12, 2014. The most recent designation of UL 959 as a Reaffirmed American National Standard (ANS) occurred on June
13、 12, 2014. 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 via a Proposal Request in ULs On-Li
14、ne 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 regarding those Standards shall remain the
15、 sole and exclusive property of UL. COPYRIGHT 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 959-2006 (R2014)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 17, 2010 MEDIUM HEAT APPLIANCE FACTORY-BUILT CHIMNEYS - UL 959 2 No Text on Th
16、is 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 .5 4 Undated References 5 5 Glossary .5 CONSTRUCTION 6 Materials .5 7 Assembly 7 8 Chimney Caps 8 9 Joints 8 10 Rad
17、iation Shields 8 11 Roof Jacks 9 12 Support Assembly .9 PERFORMANCE 13 General .9 14 Test Installation .10 15 Temperature Measurement 16 16 Thermal Shock Test .20 17 Water Shock Test .20 18 Temperature Test 1800F (980C) Flue Gases .21 19 Vertical Support Test 22 20 Strength Test .22 20.1 General 22
18、20.2 Impact test 22 20.3 Longitudinal force test 24 21 Wind Load Test 24 21.1 General .24 21.2 Roof assemblies .25 21.3 Lateral supports 27 22 Rain Test 29 23 Resistance to Action of Acids Test of Nonmetallic Flue-Gas Conduit 32 24 Freezing and Thawing Test 33 25 Cemented Joint Test of Flue-Gas Cond
19、uit .33 MARKING 26 General 34 INSTRUCTIONS 27 Installation Instructions 35 DECEMBER 17, 2010 MEDIUM HEAT APPLIANCE FACTORY-BUILT CHIMNEYS - UL 959 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements c
20、over factory-built chimneys intended for venting gas, liquid, and solid-fuel-red medium-heat type appliances in which the maximum continuous ue-gas temperatures do not exceed 1800F (980C). 1.2 Factory-built chimneys are intended for installation in accordance with the Standard for Chimneys, Fireplac
21、es, Vents, and Solid-Fuel Burning Appliances, NFPA 211, and in accordance with codes such as the International Mechanical Code, and the Uniform Mechanical Code. 1.3 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the require
22、ments in this standard, and that involves a risk of re or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features,
23、characteristics, components, materials, or systems conict with specic requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this
24、standard. 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 a specic requirement that: a) Involves a feature or characteristic not required in the applic
25、ation 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 components are incomplete in construction features or restrict
26、ed 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. DECEMBER 17, 2010 MEDIUM HEAT APPLIANCE FACTORY-BUILT CHIMNEYS - UL 959 4UL COPYRIGHTED
27、 MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 4 Undated References 4.1 Any undated reference to a code or
28、 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 For the purpose of this standard, the following denitions apply. 5.2 COMBUSTIBLE MATERIAL, NONCOMBUSTIBLE MATERIAL As used in these requirements,
29、these terms are dened in the Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances, NFPA 211. 5.3 MEDIUM HEAT APPLIANCE As used in these requirements, this term is dened in the Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances, NFPA 211. CONSTRUCTION 6
30、 Materials 6.1 A chimney part shall be made of noncombustible corrosion-resistant materials. Metals shall not be used in combinations that cause detrimental galvanic action at any location. 6.2 The minimum thickness of sheet metal including any coatings shall comply with Table 6.1. Table 6.1 Minimum
31、 thickness of sheet metal Metals Minimum thickness, sheet metal inches (mm) Aluminum alloys (1100, 3003) 0.018 (0.46) Steel 0.122 (3.10) Galvanized steel (G90 coating class) 0.018 (0.46) Aluminum-coated steel 0.40 ounce per square foot (0.12 kg/m 2 ) 0.018 (0.46) Stainless steel 0.012 (0.30) 6.3 Alu
32、minum alloys containing more than 1.0 percent magnesium shall not be used when the reectivity of the material is employed to reduce the risk of re. 6.4 A steel part intended to be eld-welded shall have a minimum thickness of 0.122 inch (3.10 mm). DECEMBER 17, 2010 MEDIUM HEAT APPLIANCE FACTORY-BUILT
33、 CHIMNEYS - UL 959 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6.5 A ue-gas conveying conduit shall be of refractory materials at least 2 inches (50.8 mm) thick conforming to the test requirements contained herein. Ceramic materials sha
34、ll conform to the requirements of the applicable tests described for the material. 6.6 Other parts of a chimney subject to contact by ue gases or ue-gas air mixtures at locations beyond the terminus of the ue-gas conveying conduit, or subject to condensation, shall be of material equivalent to Types
35、 309, 309S, 310, 310S, 314, and 446 stainless steel having a minimum thickness of 0.020 inch (0.51 mm). 6.7 An outer casing or other structural part exclusive of the ue-gas-conveying conduit whose deterioration results in the chimney system collapsing or otherwise increasing the risk of injury to pe
36、rsons shall be of galvanized steel having a coating Designation G90 (former coating Class 1.25 Commercial) in Standard Specication for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process, ASTM A653, with not less than 40 percent of the zinc on any si
37、de, based on the minimum single spot test requirement in ASTM A653, or the equivalent. See Table 6.2. Exception No. 1: The outer casing or structural part is not required to be of galvanized steel when it is made of steel 0.104 inch (2.64 mm) thicker than required to be in accordance with the other
38、requirements contained in this standard. Exception No. 2: This requirement does not apply to the ue-gas conveying conduit or other parts in contact with ue-gases. See 6.5 and 6.6. Table 6.2 Minimum thickness of outer casing material Equivalent inside nominal diameter of chimney Galvanized steel or a
39、luminum-coated steel Series 300 or 400 stainless steel inches (mm) inch (mm) inch (mm) 12 or less (305 or less) 0.018 (0.46) 0.012 (0.30) Over 12 24 (Over 305 610) 0.023 (0.58) 0.016 (0.41) Over 24 36 (Over 610 914) 0.034 (0.86) 0.026 (0.66) Oer 36 (Over 914) 0.045 (1.14) 0.032 (0.81) 6.8 The weight
40、 of zinc coating shall be permitted to be determined by any acceptable method; however, in case of question, the weight of coating shall be established in accordance with the Standard Test Method for Weight Mass of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings, ASTM A90. Alumin
41、um-coated steel shall be of Type T1-40 (regular) 0.40 ounce per square foot (0.12 kg/m 2 ). 6.9 Thermal insulation shall comply with the following conditions when the chimney is tested in accordance with these requirements: a) The products resulting from the combustion or volatilization of any combu
42、stible binder shall be discharged to the chimney terminus outside of the building. b) The insulating material shall remain in the intended position. c) The thermal conductivity of the insulation shall not increase. d) The insulation shall not show evidence of softening, melting, or deterioration. DE
43、CEMBER 17, 2010 MEDIUM HEAT APPLIANCE FACTORY-BUILT CHIMNEYS - UL 959 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6.10 Thermal insulation shall not come into contact with products of combustion. 6.11 Thermal insulation that is not self-
44、supporting shall be applied to solid surfaces so that the insulation does not sag. An adhesive or cement used to attach such material shall retain its adhesive qualities at any temperature the adhesive attains when tested in accordance with these requirements and at 0F (minus 18C). 6.12 A water abso
45、rbing insulating material shall not be subject to wetting by condensation or rain when installed as intended. 7 Assembly 7.1 A chimney shall consist of all the essential parts required for the intended installation of a complete chimney. Each part of the assembly shall be constructed for ready attac
46、hment of one to the other without requiring alteration by the installer, such as by cutting, threading, drilling, welding, or similar tasks. Exception: An assembly or component part intended to be cut to length or to be tted by the installer is provided when means are furnished for joining any alter
47、ed part to a companion part or assembly. All fasteners required to complete the assembly shall be provided with the product by the manufacturer. Drilling shall not occur unless: a) The drilling operation does not weaken the assembly or penetrate into the ue liner; and b) The size of the required dri
48、ll bit is specied and the instructions clearly describe the locations to be drilled, such as by the use of drawings, descriptions, or templates. 7.2 Two or more parts or subassemblies that bear a denite relationship to each other for intended application shall: a) Be arranged and constructed to perm
49、it them to be incorporated into the complete assembly without alteration or alignment and only in the correct relationship with each other; or b) Be assembled and shipped from the factory as one unit. 7.3 Each part, such as a chimney-pipe section or length, support element, or roof assembly or jack, shall be completely assembled by the manufacturer at the factory. 7.4 To comply with the requirements of 7.3, a chimney-pipe section comprised of a ue-gas-conveying condui
