1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58exceeding 20 kWICS 91.060.40Specification for metal flue boxes for gas-fired appliances not BRITISH
2、 STANDARDBS 715:2005BS 715:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 1 November 2005 BSI 1 November 2005Publication historyFirst published November 1936Second edition November 1951Third edition October 1962Fourth edition July 1970Fi
3、fth edition December 1986Sixth edition November 1989Seventh edition October 1993The following BSI references relate to the work on this British Standard:Committee reference GSE/4Draft for comment 05/30135982 DCISBN 0 580 46816 XBSRIA Building Services Research and Information AssociationSociety of B
4、ritish Gas IndustriesAmendments issued since publicationAmd. No. Date CommentsCommittees responsible for this British StandardThe preparation of this British Standard was entrusted to Technical Committee GSE/4, Flue pipes and fittings for gas-fired appliances, upon which the following bodies were re
5、presented:Federation of Master BuildersBritish Flue and Chimney Manufacturers AssociationBS 715:2005 BSI 1 November 2005ContentsPageCommittees responsible Inside front coverForeword ii1Scope 12 Normative references 13 Terms and definitions 14 General 15 Performance 46 Flue box for a gas fire which i
6、s 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 47 Flue box for any inset live fuel effect gas fire not exceeding 7 kW heat input (commonly known as an ILFE) which is in accordance with BS 7977-1 78 Flue box for a
7、specific inset live fuel effect gas fire (commonly known as an ILFE) which is in accordance with BS 7977-1 89 Flue box for any decorative fuel effect gas fire (commonly known as a DGF) as described in BS EN 509, intended for installation in a fire place recess 910 Flue box for a specific decorative
8、fuel effect gas fire (commonly known as a DGF) as described in BS EN 509, intended for installation in a fire place recess 10Bibliography 12Figure 1 Dimensions of a flue box for a typical gas-fired radiant/convector and live fuel effect fire 5Figure 2 Flue gas generator 6Figure 3 Dimensions of a flu
9、e box for a typical inset live fuel effect gas fire 7Figure 4 Dimensions of a flue box for a typical decorative fuel effect gas fire (DGF) 9Table 1 Inner wall material specification 2iBS 715:2005iiTogether with BS EN 1856-1 and BS EN 1856-2, it supersedes BS 715:1993 which is withdrawn.This edition
10、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 purport to include all the necessary provisions of a
11、 contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 12, an inside back cover and a back cover
12、.The BSI copyright notice displayed in this document indicates when the document was last issued.ForewordThis British Standard has been prepared by Technical Committee GSE/4. BSI 1 November 2005BS 715:20051 ScopeThis British Standard specifies the dimensional, material and performance requirements f
13、or 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 flue pipes conforming to BS EN 1856-1 and BS EN 1856-2.2 Normative referencesThe following referenced documents are indispen
14、sable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS 1251:1987, Specification for open-fireplace components.BS 1449-1, Steel plate, sheet and strip
15、 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/convectors.BS EN 509:2000, Decorative fuel-effect gas appliances.BS EN 1559-1, Founding Technical conditions of delivery General.BS EN 15
16、59-2, Founding Technical conditions of delivery Additional requirements for steel castings.BS EN 1856-1, Chimneys Requirements for metal chimneys Part 1: System chimney products.BS EN 1856-2, Chimneys Requirements for metal chimneys Part 2: Metal liners and connecting flue pipes.BS EN 10088-1, Stain
17、less 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 conditions.3 Terms and definitionsFor the purposes of this British Standard, the following terms and definitions apply.3.1 flue boxdevice that
18、 provides a substitute open fire place to which a gas fire and flue can be installed4 General4.1 Materials4.1.1 Construction materialsFlue box materials shall be selected so that in combination they will not cause corrosion, including bimetallic corrosion, and hence adversely affect the integrity of
19、 the flue box.NOTE This includes any fastenings used in the construction.4.1.2 Inner wallExcept as specified in 9.1 and 10.1, the inner wall in contact with 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
20、of aluminium or stainless steel conforming to Table 1 and shall be not less than 0.30 mm thick. BSI 1 November 20051BS 715:2005Table 1 Inner wall material specification4.1.3 Outer wallThe outer wall shall be of one of the following materials:a) aluminium or aluminium alloy conforming to Table 1;b) s
21、tainless 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 ste
22、el grade 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-b
23、onded 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 materialAny insulating material shall be of mineral base, be non-combustible and have substantially uniform density.4.2 ConstructionThe flue box shall be ei
24、ther 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 di
25、ameter 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 shal
26、l be continuous and shall not form internal or external Material Material type Material number SymbolAluminium 10 EN AW-4047A EN AW-Al Si12(A) and Cu 0.1 %, Zn 0.15 % (cast aluminium)11 EN AW-1200A EN AW-Al 99.0(A)13 EN AW-6060 EN AW-Al MgSiStainless steel 20 1.4301 X5CrNi18-1030 1.4307 X2CrNi18-940
27、 1.4401 X5CrNiMo17-12-250 1.4404aX2CrNiMo17-12-260 1.4432 X2CrNiMo17-12-370 1.4539 X1NiCrMoCu25-20-5NOTE This information has been taken from BS EN 10088-1 and BS EN 573-3.aEquivalent for material number 1.4404 is 1.4571 (symbol X6CrNiMoTi17-12-2).2 BSI 1 November 2005projections that will detract f
28、rom the appearance of the finished article, causing difficulty in joining pipes and fittings, or give rise to corrosion.BS 715:20054.3 FinishThe outside of the flue box shall not contain any sharp edges, projections or other imperfections which could cause injury whilst handling or prevent easy inse
29、rtion into an existing flue.4.4 Marking4.4.1 InformationEach flue box shall be permanently and legibly marked with the following information:a) the number and date of this British Standard, i.e. BS 715:2005)1);b) the name or distinguishing mark of the manufacturer;c) a permanent warning label attach
30、ed in a prominent position adjacent to the front edge of the base plate)2).4.4.2 Specific wordingThe wording on the warning label will depend on the type of 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 sizeThe words “WARNING FIRE R
31、ISK” 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 height.4.4.4 Durability2)4.4.4.1 RequirementThe warning label shall be indelibly marked and firmly fixed. This shall be verified through testing in
32、 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 warning label and the removal of the warning label shall not be easily possible.4.4.4.2 MethodFix the warning label in the manner specified by the fi
33、re 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 resulting 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 ch
34、ange.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 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
35、edges of the warning label for lifting; and c) the fixing of the warning label for ease of removal.4.5 Installation instructionsThe flue box manufacturer shall make available full installation instructions, including the method of securely fixing the flue box in position, the flue size compatible wi
36、th 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 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
37、. The accuracy of the claim is therefore solely the responsibility of the person making the claim. Such a declaration is not to be confused with third party certification of BSI 1 November 20053conformity, which may also be desirable. 2)For the purposes of requirements 4.4.1c) and 4.4.4, a metal foi
38、l 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 aliphatic solvent hexane having a maximum aromatics content of 0.1 % by volume, a kauri-butanol value of 29, an initial boiling point of approxi
39、mately 65 C, a dry point of approximately 69 C and a specific mass of approximately 0.66 kg/l.BS 715:20055 Performance5.1 Strength test5.1.1 RequirementWhen 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 than
40、90 kg without permanent distortion.5.1.2 MethodApply 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 to the ba
41、se of the flue box.5.2 Temperature requirementWhen 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 temperature ris
42、e 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 any breakdown o
43、r 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 3.1.26.1 MaterialsMaterials for the flue box cons
44、truction shall be in accordance with 4.1.2 and 4.1.3.6.2 DimensionsThe 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 dimensions shall be not
45、 less than 165 mm as shown in Figure 1.6.3 MarkingThe permanent warning label (see 4.4) shall state the following:“WARNING FIRE RISKTHIS 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 SOLID FUEL FIRE MUST NO
46、T BE FITTED IN THIS BOX OR CHIMNEY.”6.4 Temperature test Method6.4.1 Test roomThe 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 ProcedurePlace the flue box in the test room at least 4 h before com
47、mencing the tests to allow it to reach the test room temperature.4 BSI 1 November 2005Stand the flue box on a test floor in accordance with BS 7977-1:2002, 6.4.4.2, and behind a wooden test wall (1 500 mm wide 1 000 mm high 25 mm thick) having a cut-out such that the front opening of the flue box is
48、 not restricted.BS 715:2005Seal the front of the flue box to the wall, and mount and seal the flue gas generator (see Figure 2) to the front of the wall opening. Seal the gap between the test wall and the front of the flue gas generator with a gasket of suitable insulating material.Fit a length of f
49、lue pipe, as specified by the manufacturer, to give a minimum overall height of 3 m when measured from the floor. The flue pipe shall terminate inside the test room.Means shall be provided to measure the average flue gas temperature.NOTE The combustion probe with the thermocouple described in BS 6332-4 can be used with a recommended sampling rate of between 8 dm3/min and 12 dm3/min. Fit the temperature probe in the flue at a point 600 mm above the top of the flue box to allow adequate
