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1、BRITISH STANDARD BS 4543-3: 1990 Incorporating Amendment No. 1 Factory-made chimneys Part 3: Specification for chimneys with stainless steel fluelining for use with oil fired appliances Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543
2、-3:1990 This British Standard, having been prepared under the direction of the Building Services Standards Policy Committee, was published under the authority of the Board of BSI and comes into effect on 31 December 1990 BSI 07-1999 First published January 1970 Second edition July 1976 Third edition
3、 December 1990 The following BSI references relate to the work on this standard: Committee reference SEB/30 Draft for comment 89/11065 DC ISBN 0 580 18992 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Building Services Standards Poli
4、cy Committee (SEB/-) to Technical Committee SEB/30, upon which the following bodies were represented: Association of British Solid Fuel Appliances Manufacturers British Coal Corporation British Flue and Chimney Manufacturers Association British Gas plc British Steel Industry DSFAAS Ltd. Department o
5、f the Environment (Building Research Establishment) Department of the Environment (Construction Industries Directorate) Institute of Domestic Heating and Environmental Engineers Institute of Wastes Management National Association of Plumbing, Heating and Mechanical Services Contractors Royal Institu
6、te of British Architects Scottish Development Department Amendments issued since publication Amd. No.DateComments 8381September 1994 Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3:1990 BSI 07-
7、1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Definitions1 3Materials1 4Fire-stop and spacer1 5Chimney support1 6Tolerances1 7Testing sequence1 8Measurement of length and internal diameter2 9Chimney support test2 10Leakage test2 11Regularity of internal diameter te
8、st2 12Draught test2 13Thermal performance test2 14Strength test2 15Moisture test2 16Marking2 Figure 1 Typical straight chimney installation4 Figure 2 Typical chimney installation incorporating bends5 Figure 3 Typical fire-stops and spacers6 Table 1 Compositions of stainless steels3 Table 2 Materials
9、 and minimum thicknesses of outer casings of chimney sections not exposed to the external environment3 Table 3 Permitted reduction in declared internal diameter after testing or disc clearance3 Publication(s) referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:0
10、6 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3:1990 ii BSI 07-1999 Foreword This Part of BS 4543 has been prepared under the direction of the Building Services Standards Policy Committee, and deals with factory-made chimneys intended for dry construction and for application within a dwelling
11、, with a terminal assembly designed for exposure to the external environment. This Part of BS 4543 specifies requirements for factory-made chimneys with stainless steel internal and metal external surfaces, and intended for use with oil fired appliances. It should be read in conjunction with BS 4543
12、-1 and it supersedes BS 4543-3:1976 which is withdrawn. Part 2 of this standard specifies requirements for chimneys intended for use with appliances burning solid fuel. It is accepted that not every combination of accessories in any one manufacturers range is tested in accordance with the requiremen
13、ts of this standard. However, the ability of the representative chimney tested to meet the requirements specified is taken as evidence that all such accessories are fit for purpose when used in accordance with the manufacturers recommendations. Durability testing does not form part of this standard.
14、 Factory-made chimneys with non-metallic linings are not covered by this revision and will be considered at a later date. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance wi
15、th 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 ii, pages 1 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had am
16、endments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3:1990 BSI 07-19991 1 Scope This Part of BS 4543 specifies requirements for factory-made
17、chimneys with stainless steel internal and metal external surfaces, having a flue of circular cross section, which are supplied in component form needing assembly only and no site fabrication. They are intended for use with appliances burning oil and having a rated output up to 45 kW with a flue gas
18、 temperature not exceeding 450 C at the appliance exit after any permanent draught break or before any stabilizer. With the exception of the terminal assembly exposed to the external environment (see 3.2.1) the chimney is for internal applications when installed in accordance with BS 6461-21). Only
19、ranges of chimney sections and fittings forming part of the straight configuration (see Figure 1) or a configuration with one offset (see Figure 2) are specified in this standard. Other sections and fittings do not form part of the standard, see Appendix A of BS 4543-2:1990. NOTE 1The titles of the
20、publications referred to in this standard are listed on the inside back cover. NOTE 2Chimneys to this Part of this standard may only be considered suitable for use with oil and gas burning appliances. 2 Definitions For the purpose of this Part of BS 4543 the definitions given in BS 4543-1 apply. 3 M
21、aterials 3.1 Flue linings and end-caps 3.1.1 The material for a flue lining and end-caps shall be stainless steel sheet of the types given in Table 1. The sheet shall have a minimum specified thickness of 0.4 mm and the tolerance on the specified thickness shall comply with Table 9 of BS 1449-2:1983
22、. 3.1.2 When the design of the section is such that the end-cap is not in contact with the flue gas products the sheet shall have a minimum specified thickness of 0.3 mm and the tolerance on the specified thickness shall comply with Table 9 of BS 1449-2:1983. 3.2 Outer casing 3.2.1 The material and
23、minimum thickness of the outer casing, to be used for terminal chimney sections exposed to the external environment, shall be in accordance with 3.1. 3.2.2 Chimney sections not exposed to the external environment shall be fabricated with outer casings which comply with either 3.1 or Table 2. 3.2.3 A
24、ny accessory which comes in contact with an outer casing which is exposed to the external environment shall be manufactured from the materials listed in Table 1. 4 Fire-stop and spacer Where the chimney passes through a floor or ceiling it shall be provided with a fire-stop arrangement of non-combus
25、tible material (see Figure 3). The maximum permissible gap between fire-stop and chimney outer casing on any one external diameter shall be 6 mm (3 mm radial). NOTEFor further guidance on fire-stops see clause 5 of BS 6461-2:1984. 5 Chimney support Any chimney support shall be manufactured from a no
26、n-combustible material and shall comply with clause 9. 6 Tolerances Length shall be within 3 mm of the declared length and the internal diameter shall be within 1.0 mm of the declared internal diameter. 7 Testing sequence The tests listed below and described in Part 1 of this standard shall be carri
27、ed out in the following sequence: Test a) Measurement of length and internal diameter b) Chimney support test c) Leakage test d) Draught test e) Thermal performance test f) Leakage test g) Regularity of internal diameter test h) Strength test i) Regularity of internal diameter test j) Moisture test
28、1) It is envisaged that a revision of BS 6461-2 will be published. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3:1990 2 BSI 07-1999 8 Measurement of length and internal diameter The internal diameters of sections and fittings inc
29、luding end-caps but excluding any localized forming such as swaging or crimping shall be substantially circular to the extent that the deviation of any single internal diameter shall be within 1 % of the average diameter, when measured as described in 4.1 of BS 4543-1:1990. The measured length shall
30、 comply with clause 6 of this standard when measured as described in 4.2 of BS 4543-1:1990. 9 Chimney support test When tested as described in clause 5 of BS 4543-1:1990 there shall be no permanent deformation of the chimney support. 10 Leakage test When tested as described in clause 6 of BS 4543-1:
31、1990 the leakage rate shall not exceed 3 m3/h per metre of chimney. 11 Regularity of internal diameter test When tested as described in clause 7 of BS 4543-1:1990 the disc allowing the clearance given in Table 3 shall pass freely down the full extent of the chimney. When the alternative test, given
32、in 7.4 of BS 4543-1:1990 is used, there shall be no reduction greater than the permitted reduction given in Table 3. 12 Draught test When tested as described in clause 8 of BS 4543-1:1990 to a nominal temperature of 450 (440 + 20) C (see Table 1 of BS 4543-1:1990) a draught of not less than 4.0 N/m2
33、 2) (0.4 mm water gauge) per metre of chimney shall be produced. 13 Thermal performance test When tested as described in 9.1 of BS 4543-1:1990 to a nominal flue gas temperature of 450 (440 + 20) C (see Table 1 of BS 4543-1:1990), the maximum temperature attained on any surface of the test structure
34、such as ceiling, enclosure, floor or joists, shall be not more than 65 C above ambient air temperature when equilibrium as described in 9.1 of BS 4543-1:1990 is reached. 14 Strength test After completion of test 8 (see testing sequence in clause 7) when tested as described in clause 11 of BS 4543-1:
35、1990, the chimney shall not open up or break apart and shall subsequently comply with clause 11 of this standard. 15 Moisture test When the sections and fittings to be exposed to the external environment, are removed from just below the nominal roof line in their assembled state and tested as descri
36、bed in clause 12 of BS 4543-1:1990 there shall be less than 25 g/m increase in mass. 16 Marking Each section and fitting shall be marked by means of a label with the following information: a) the name and/or distinguishing mark of the manufacturer; b) the number and date3) of this British Standard,
37、i.e. BS 4543-3:1990; c) the required distance from combustible matter (specified distance X, see 3.1.1 of BS 4543-1:1990); d) direction of flow of flue gas; 2) 1 N/m2 = 1 Pa. 3) Marking BS 4543-3:1990 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim b
38、y or on behalf of the manufacturer that the product meets the requirements 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 with third party certification of conformity, which may also be desira
39、ble. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3:1990 BSI 07-19993 Table 1 Compositions of stainless steels Table 2 Materials and minimum thicknesses of outer casings of chimney sections not exposed to the external environment
40、Table 3 Permitted reduction in declared internal diameter after testing or disc clearance (see clause 11) BS 4543 Stainless steel type Composition (percentage by mass)Designation of BS 1449-2 steel which comply Nearest Euronorm 88-71 designation CSiMnPSCrMoNi max.max.max.max.max.min.max.min.max.min.
41、max. 4543/A0.071.02.00.0450.03017.020.08.011.0304S15 304S16 304S31 X6 CrNi 18 10 4543/B0.071.02.00.0450.03016.518.51.251.808.011.0315S16No equivalent 4543/C0.031.02.00.0450.03016.018.52.03.010.014.5316S11X3 CrNiMo 17 12 2 316S13X3 CrNiMo 17 13 3 0.071.02.00.0450.03016.018.52.03.010.014.0316S31X6 CrN
42、iMo 17 12 2 316S33X6 CrNiMo 17 13 3 MetalMinimum thickness including coating mm Hot-dip zinc coated steel sheet G275, in accordance with BS 2989:1982 0.5 Aluminium coated steel sheet, the coating to be not less than 115 g/m2 on each side 0.5 Aluminium-zinc coated steel GA 185, in accordance with BS
43、6830:1987 0.5 Chimney size (see Table 1 of BS 4543-1:1990) 1 and 23 and 45 Permitted reduction/clearance in mm 81012 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3:1990 4 BSI 07-1999 NOTEAlways refer to manufacturers installation
44、instructions for full details regarding correct installation and use of support components. Figure 1 Typical straight chimney installation Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3:1990 BSI 07-19995 NOTEAlways refer to manufa
45、cturers installation instructions for full details regarding correct installation and use of support components. Figure 2 Typical chimney installation incorporating bends Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3:1990 6 BSI 0
46、7-1999 NOTE“Boxing-in” may be required between roof joists. Figure 3 Typical fire-stops and spacers Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3:1990 BSI 07-1999 Publication(s) referred to BS 1449, Steel plate, sheet and strip.
47、BS 1449-2, Specification for stainless and heat-resisting steel plate, sheet and strip. BS 2989, Specification for continuously hot-dip zinc coated and iron-zinc alloy coated steel: wide strip, sheetplate and slit wide strip. BS 4543, Factory-made chimneys. BS 4543-1, Methods of test. BS 4543-2, Spe
48、cification for chimneys with stainless steel flue linings for use with solid fuel fired appliances. BS 6461, Installation of chimneys and flues for domestic appliances burning solid fuel (including wood and peat). BS 6461-2, Code of practice for factory-made insulated chimneys for internal applicati
49、ons. BS 6830, Specification for continuously hot-dip aluminium/zinc alloy coated cold rolled carbon steel flat products. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 09:08:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4543-3: 1990 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British
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