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1、BRITISH STANDARD BS 715:2005 Specification for metal flue boxes for gas-fired appliances not exceeding 20 kW ICS 91.060.40 ? Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 14:47:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 715:2005 This British Standard was
2、 published under the authority of the Standards Policy and Strategy Committee on 1 November 2005 BSI 1 November 2005 Publication history First published November 1936 Second edition November 1951 Third edition October 1962 Fourth edition July 1970 Fifth edition December 1986 Sixth edition November 1
3、989 Seventh edition October 1993 The following BSI references relate to the work on this British Standard: Committee reference GSE/4 Draft for comment 05/30135982 DC ISBN 0 580 46816 X Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technica
4、l Committee GSE/4, Flue pipes and fittings for gas-fired appliances, upon which the following bodies were represented: Federation of Master Builders British Flue and Chimney Manufacturers Association BSRIA Building Services Research and Information Association Society of British Gas Industries Amend
5、ments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 14:47:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 715:2005 BSI 1 November 2005 i Contents Page Committees responsibleInside front cover Forewordii 1Scope 1 2
6、Normative references 1 3Terms and definitions 1 4General 1 5Performance 4 6Flue box for a gas fire which is in accordance with a domestic gas-fired radiant/convector and live fuel effect fire as described in BS 7977-1:2002, 3.1.1 and 3.1.2 4 7Flue box for any inset live fuel effect gas fire not exce
7、eding 7 kW heat input (commonly known as an ILFE) which is in accordance with BS 7977-1 7 8Flue box for a specific inset live fuel effect gas fire (commonly known as an ILFE) which is in accordance with BS 7977-1 8 9Flue box for any decorative fuel effect gas fire (commonly known as a DGF) as descri
8、bed in BS EN 509, intended for installation in a fire place recess 9 10Flue box for a specific decorative fuel effect gas fire (commonly known as a DGF) as described in BS EN 509, intended for installation in a fire place recess 10 Bibliography 12 Figure 1 Dimensions of a flue box for a typical gas-
9、fired radiant/convector and live fuel effect fire 5 Figure 2 Flue gas generator 6 Figure 3 Dimensions of a flue box for a typical inset live fuel effect gas fire 7 Figure 4 Dimensions of a flue box for a typical decorative fuel effect gas fire (DGF) 9 Table 1 Inner wall material specification 2 Lice
10、nsed Copy: London South Bank University, London South Bank University, Fri Dec 08 14:47:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 715:2005 ii BSI 1 November 2005 Foreword This British Standard has been prepared by Technical Committee GSE/4. Together with BS EN 1856-1 and BS EN 1856-2, it supe
11、rsedes BS 715:1993 which is withdrawn. This edition retains the requirements for metal flue boxes formerly in BS 715:1993, updated to reflect current practice. All requirements and recommendations relating to metal chimneys can now be found in BS EN 1856-1 and BS EN 1856-2. This publication does not
12、 purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and
13、ii, pages 1 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 14:47:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 715:
14、2005 BSI 1 November 2005 1 1 Scope This British Standard specifies the dimensional, material and performance requirements for metal flue boxes to enable gas fire flues to be installed against or within a wall which does not have a fireplace or flue. The flue boxes are intended to be used with metal
15、flue pipes conforming to BS EN 1856-1 and BS EN 1856-2. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (inclu
16、ding any amendments) applies. BS 1251:1987, Specification for open-fireplace components. BS 1449-1, Steel plate, sheet and strip Carbon and carbon-manganese plate, sheet and strip. BS 7977-1:2002, Specification for safety and rational use of energy of domestic gas appliances Part 1: Radiant/convecto
17、rs. BS EN 509:2000, Decorative fuel-effect gas appliances. BS EN 1559-1, Founding Technical conditions of delivery General. BS EN 1559-2, Founding Technical conditions of delivery Additional requirements for steel castings. BS EN 1856-1, Chimneys Requirements for metal chimneys Part 1: System chimne
18、y products. BS EN 1856-2, Chimneys Requirements for metal chimneys Part 2: Metal liners and connecting flue pipes. BS EN 10088-1, Stainless steel Part 1: List of stainless steels. BS EN 10327, Continuously hot-dip coated strip and sheet of low carbon steels for cold forming Technical delivery condit
19、ions. 3 Terms and definitions For the purposes of this British Standard, the following terms and definitions apply. 3.1 flue box device that provides a substitute open fire place to which a gas fire and flue can be installed 4 General 4.1 Materials 4.1.1 Construction materials Flue box materials sha
20、ll be selected so that in combination they will not cause corrosion, including bimetallic corrosion, and hence adversely affect the integrity of the flue box. NOTE This includes any fastenings used in the construction. 4.1.2 Inner wall Except as specified in 9.1 and 10.1, the inner wall in contact w
21、ith flue gas (this includes the base sheet where the design of the box permits free circulation of flue gases within the box design) shall be made of aluminium or stainless steel conforming to Table 1 and shall be not less than 0.30 mm thick. Licensed Copy: London South Bank University, London South
22、 Bank University, Fri Dec 08 14:47:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 715:2005 2 BSI 1 November 2005 Table 1 Inner wall material specification 4.1.3 Outer wall The outer wall shall be of one of the following materials: a) aluminium or aluminium alloy conforming to Table 1; b) stainless
23、 steel conforming to BS EN 10088-1; c) aluminium/zinc alloy coated steel of grades DX51D with coating AZ 185 or AZ 150 conforming to BS EN 10327; d) hot-dip zinc coated steel sheet of steel grade DX51D with coating type Z600 as specified in BS EN 10327; e) hot-dip zinc coated steel sheet of steel gr
24、ade DX51D or DX52D with coating type Z275 as specified in BS EN 10327; f) aluminium coated steel, consisting of steel base conforming to the appropriate section of BS 1449-1, with a hot-dipped coating of alloy conforming to BS EN 1559-1 and BS EN 1559-2 of thickness not less than 13 4m; g) roll-bond
25、ed aluminium coated steel base conforming to the appropriate section of BS 1449-1 with a minimum coating thickness of 20 4m. 4.1.4 Insulating material Any insulating material shall be of mineral base, be non-combustible and have substantially uniform density. 4.2 Construction The flue box shall be e
26、ither single-walled with insulation or double-walled with or without additional insulation. The flue box shall be generally rectangular in plan, and the front shall be open. The outlet shall be in the top of the flue box and shall accept a flue pipe conforming to BS EN 1856-1 or BS EN 1856-2 of the
27、diameter specified by the gas fire manufacturer. Seams shall be sound and mechanically strong when tested in accordance with 5.1. They can be either, folded, riveted, welded, or joined by other mechanical methods, except for vitreous enamelled components which shall have welded seams. Welded seams s
28、hall be continuous and shall not form internal or external projections that will detract from the appearance of the finished article, causing difficulty in joining pipes and fittings, or give rise to corrosion. MaterialMaterial typeMaterial numberSymbol Aluminium10EN AW-4047AEN AW-Al Si12(A) and Cu
29、0.1 %, Zn 0.15 % (cast aluminium) 11EN AW-1200AEN AW-Al 99.0(A) 13EN AW-6060EN AW-Al MgSi Stainless steel201.4301X5CrNi18-10 301.4307X2CrNi18-9 401.4401X5CrNiMo17-12-2 501.4404aX2CrNiMo17-12-2 601.4432X2CrNiMo17-12-3 701.4539X1NiCrMoCu25-20-5 NOTE This information has been taken from BS EN 10088-1 a
30、nd BS EN 573-3. a Equivalent for material number 1.4404 is 1.4571 (symbol X6CrNiMoTi17-12-2). Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 14:47:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 715:2005 BSI 1 November 2005 3 4.3 Finish The outside of the flue
31、 box shall not contain any sharp edges, projections or other imperfections which could cause injury whilst handling or prevent easy insertion into an existing flue. 4.4 Marking 4.4.1 Information Each flue box shall be permanently and legibly marked with the following information: a) the number and d
32、ate of this British Standard, i.e. BS 715:2005)1); b) the name or distinguishing mark of the manufacturer; c) a permanent warning label attached in a prominent position adjacent to the front edge of the base plate)2). 4.4.2 Specific wording The wording on the warning label will depend on the type of
33、 fire for which the fire box is intended and is detailed in 6.3, 7.3, 8.3, 9.4 and 10.4 as appropriate. 4.4.3 Print size The words “WARNING FIRE RISK” wherever positioned shall be emphasized and in upper case characters at least 8 mm in height; other wording shall be in characters at least 4 mm in h
34、eight. 4.4.4 Durability2) 4.4.4.1 Requirement The warning label shall be indelibly marked and firmly fixed. This shall be verified through testing in accordance with 4.4.4.2. Upon the completion of the test, the marking shall be clearly legible, there shall be no lifting of the exposed edges of the
35、warning label and the removal of the warning label shall not be easily possible. 4.4.4.2 Method Fix the warning label in the manner specified by the fire box manufacturer to a piece (200 mm 200 mm) of the material specified by the fire box manufacturer for the base sheet of the box. Expose the resul
36、ting test piece to 10 cycles of a temperature of 150 C for 1 h and of 0 C for 1 h with a 15 min interval at room temperature between each temperature change. At the end of the 10 cycles, once the test piece is at room temperature, rub the marking on the warning label by hand for 15 s with a piece of
37、 cloth soaked with water and again for 15 s with a piece of cloth soaked in petroleum spirit3). Then check: a) the marking for legibility; b) the exposed edges of the warning label for lifting; and c) the fixing of the warning label for ease of removal. 4.5 Installation instructions The flue box man
38、ufacturer shall make available full installation instructions, including the method of securely fixing the flue box in position, the flue size compatible with the flue box outlet and the wording of the warning label specific to the flue box type. 1) Marking BS 715:2005 on or in relation to a product
39、 represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirement of the standard. The accuracy of the claim is therefore solely the responsibility of the person making the claim. Such a declaration is not to be confused wi
40、th third party certification of conformity, which may also be desirable. 2) For the purposes of requirements 4.4.1c) and 4.4.4, a metal foil badge would be regarded as being permanently and legibly marked. Anything else will need to be assessed. 3) The petroleum spirit to be used for the test is ali
41、phatic solvent hexane having a maximum aromatics content of 0.1 % by volume, a kauri-butanol value of 29, an initial boiling point of approximately 65 C, a dry point of approximately 69 C and a specific mass of approximately 0.66 kg/l. Licensed Copy: London South Bank University, London South Bank U
42、niversity, Fri Dec 08 14:47:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 715:2005 4 BSI 1 November 2005 5 Performance 5.1 Strength test 5.1.1 Requirement When tested in accordance with 5.1.2, the flue box in the free-standing position shall withstand an evenly distributed static load of not less
43、 than 90 kg without permanent distortion. 5.1.2 Method Apply an evenly distributed static load of not less than 90 kg to the top surfaces of the flue box (excluding the flue spigot) by means of weighted bags, with the base of the flue box resting on a flat horizontal surface at least equal in size t
44、o the base of the flue box. 5.2 Temperature requirement When tested in accordance with 6.4, 7.4, 8.4, 9.5 or 10.5 as appropriate to the type of flue box: a) the maximum temperature rise of the outer walls and top surface of the flue box and any fixing points shall not exceed 65 C; b) the maximum tem
45、perature rise recorded on the test floor shall not exceed 50 C except that, where the manufacturer specifies that the flue box has to be installed on a non-combustible hearth, the maximum temperature rise shall be 60 C. At the conclusion of the relevant test no part of the box shall have suffered an
46、y breakdown or distortion liable to lead to a reduction in the life of the box or to affect its safety. 6 Flue box for a gas fire which is in accordance with a domestic gas-fired radiant/convector and live fuel effect fire as described in BS 7977-1:2002, 3.1.1 and 3.1.2 6.1 Materials Materials for t
47、he flue box construction shall be in accordance with 4.1.2 and 4.1.3. 6.2 Dimensions The front faces of the sides, top and bottom shall be on a single plane with a minimum front opening of 380 mm wide and 510 mm high and shall accept a typical closure plate. The flue box internal front-to-back dimen
48、sions shall be not less than 165 mm as shown in Figure 1. 6.3 Marking The permanent warning label (see 4.4) shall state the following: “WARNING FIRE RISK THIS BOX IS ONLY FOR USE WITH DOMESTIC GAS-FIRED RADIANT/CONVECTORS AND LIVE FUEL EFFECT FIRES AS DESCRIBED IN BS 7977-1:2002, 3.1.1 AND 3.1.2. A
49、SOLID FUEL FIRE MUST NOT BE FITTED IN THIS BOX OR CHIMNEY.” 6.4 Temperature test Method 6.4.1 Test room The room shall be adequately ventilated but free from draughts and the ambient temperature shall be kept constant to within 2 C throughout the test. 6.4.2 Procedure Place the flue box in the test room at least 4 h before commencing the tests to allow it to reach the test room temperature. Stand the flue box on a test floor in accordance with BS 7977-1:2
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