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1、BRITISH STANDARD BS 5871-3:2001 Specification for the installation of gas fires, convector heaters, fire/back boilers and decorative fuel effect gas appliances Part 3: Decorative fuel effect gas appliances of heat input not exceeding 20 kW (2nd and 3rd family gases) ICS 97.100.20 NO COPYING WITHOUT
2、BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5871-3:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the a
3、uthority of the Standards Committee and comes into effect on 15 July 2001 (see Foreword) BSI 04-2001 The following BSI references relate to the work on this standard: Committee reference GSE/30 Draft for comment 98/712227 DC ISBN 0 580 33273 X Committees responsible for this British Standard The pre
4、paration of this British Standard was entrusted to Technical Committee GSE/30, Gas installations (1st, 2nd and 3rd family gases), upon which the following bodies were represented: BG Plc British Flue and Chimney Manufacturers Association Centrica Combustion Engineers Association Consumer Policy Comm
5、ittee of BSI Council for Registered Gas Installers Department of Trade and Industry Gas Consumers Council Health and Safety Executive Institute of Domestic Heating and Environmental Engineers Institution of Gas Engineers Liquified Petroleum Gas Industry Technical Association Society of British Gas I
6、ndustries Co-opted members Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5871-3:2001 BSI 04-2001 i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Norma
7、tive references1 3Terms and definitions2 4Exchange of information and planning3 5Appliances4 6Materials and components5 7Location5 8Ventilation7 9Flueing10 10Appliance fixing17 11Fire and related safety precautions18 12Gas supply21 13Electricity supplies and wiring22 14Commissioning22 15Instructions
8、 and use of fireguards23 16User information and maintenance23 Annex A (informative) Calculation of clearance flue flow24 Bibliography35 Figure 1 Types of fuel effect gas appliances covered by BS 58716 Figure 2 Flue/fireplace sizing chart for decorative fuel effect gas appliances12 Figure 3 Appliance
9、 installation in a typical flue box (see 9.3.2)14 Figure 4 Unsuitable terminations (see 9.3.4.3 and 9.3.4.4)15 Figure 5 Typical fireplaces in which appliance may be installed see 11.2 for hearth dimensions and also commentary and recommendations for 9.3.1b)19 Figure 6 Constraints required to determi
10、ne chimney size using method 2 for cases 4, 5 and 6 see Figure 5 and commentary and recommendations to 9.3.1b)20 Figure A.1 Bubble leak indicator29 Figure A.2 Basic test box30 Figure A.3 Test box and flue for appliances that can be installed in a metal flue box31 Figure A.4 Collecting hood32 Figure
11、A.5 Collecting hood positioning33 Table A.1 Test internal air pressure24 Table A.2 Wobbe number for test gases25 Table A.3 Inlet pressure for tolerances25 Table A.4 K values for reference gases28 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:08 GMT+00:00 2006, Uncontrolled Copy, (c) B
12、SI BS 5871-3:2001 ii BSI 04-2001 Foreword This part of BS 5871 has been prepared under the direction of the Engineering Sector Board and is a revision of BS 5871-3:1991, which is withdrawn. A period of three months has been allowed for users of the old standard to convert to the new standard. This r
13、evision reflects experience gained in the use of the 1991 edition for the installation of decorative fuel effect gas appliances1) and also provides additional guidance on the use of fanned draught flueing and flue sizing. BS 5871 continues to cover the different types of fuel effect appliances in a
14、single series of British Standards, as follows: Part 1: Gas fires, convector heaters, fire/back boilers and heating stoves (1st, 2nd and 3rd family gases); Part 2: Inset live fuel effect gas fires of heat input not exceeding 15 kW and fire/back boilers (2nd and 3rd family gases); Part 3: Decorative
15、fuel effect gas appliances of heat input not exceeding 20 kW (2nd and 3rd family gases). To identify which part of BS 5871 to use when fitting an appliance which simulates a solid fuel fire, reference should be made to Figure 1 which serves to illustrate appliance types and link them to the appropri
16、ate part of BS 5871. It should be noted that the only fuel effect appliances covered by this part of BS 5871 are those detailed in b) of the commentary and recommendations on clause 5 of this standard. The manufacturers instructions supplied with fanned draught appliances in which the fan is either
17、integral with the appliance or with the flue system will make reference to the appropriate part of BS 5871. It should be noted that the only appliances covered by this part of BS 5871 are those that are “CE” marked. However, BS 5871-3 may also be referred to for the installation of used appliances,
18、where appropriate, providing the manufacturers instructions are available. In such circumstances, the installer should satisfy himself that the appliance is safe in construction and condition, and can be used without constituting a danger. Attention is drawn to clause 5 concerning this particular as
19、pect. Arising from European Standards harmonization, some British Standards appliance specifications are now being replaced by European Standards. One consequence of this process is that the reference clearance flue flow test, currently included in some of the British Standards covering the safety o
20、f appliances dealt with by BS 5871, will not be given in European appliance standards. This test has hitherto been used to determine the flue flow, under laboratory conditions, that an appliance will just clear its combustion products. The test has been used as a key factor in determining whether or
21、 not certain appliances of 7 kW2) heat input or less require purpose provided ventilation for their installation. Although BS 5871 is an appliance installation standard, the drafting committee has decided to include the clearance flue test as an informative annex. It is hoped that this arrangement w
22、ill provide Notified Test Houses under the Gas Appliance Directive with a continuing means to evaluate appliances for installation within the UK which claim that no purpose provided ventilation is necessary for their installation. 1)Sometimes referred to as a decorative gas fire or DGF. 2)Due to tol
23、erances, this applies to a heat input of 7 kW on both net and gross calorific value. See clause 1, Scope, note 2. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5871-3:2001 BSI 04-2001 iii This standard allows manufacturers instructions
24、to specify a method of installation, testing, commissioning or maintenance which differs in points of detail from this standard. This reference to manufacturers instructions is allowed only where it will result in at least an equivalent level of safety. In such circumstances, it is important that th
25、e manufacturers instructions are followed. NOTEIn the preparation of this standard the opportunity has been taken to present it in the format of a practice specification as defined in PD 6501-1. This format allows the requirements of the specification to be supported by recommendations. To comply wi
26、th this specification, the user has to comply with all its requirements. He may depart from recommendations but this would be his own responsibility and he would be expected to have good reasons for doing so. A British Standard does not purport to include all the necessary provisions of a contract.
27、Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. In particular, attention is drawn to the following. a) The Gas Safety (Installation and Use) Regulations (S.I. 1998 No. 2451). 1 b)
28、The Gas Appliances (Safety) Regulations 1995 (S.I. 1629). 2 c) The Building Regulations 2000 (S.I. 2531). 3 d) The Building Standards (Scotland) Regulations 1990 (S.I. 2179) (as amended). 4 e) The Building Regulations (Northern Ireland) Statutory Rules No. 243 (as amended). 5 f) The Gas Safety (Appl
29、ication) Order 1996 (Isle of Man). 6 Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 35 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun,
30、na, Mon Dec 04 16:31:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5871-3:2001 BSI 04-2001 1 1 Scope This part of BS 5871 specifies installation requirements for open flued decorati
31、ve fuel effect gas appliances of heat input not exceeding 20 kW (see note 2) burning 2nd and 3rd family gases in rooms or internal spaces in domestic (see note 4) or commercial premises, including public houses and restaurants. The provisions contained within this standard cover the selection of a s
32、uitable appliance, the ventilation and flueing requirements, and other measures necessary to ensure a safe installation. This standard applies to the installation of decorative fuel effect gas appliances in builders openings, fireplace recesses, flue boxes or under associated independent canopies. (
33、See Figure 5.) It does not cover the installation of flueless or room-sealed appliances. This standard is not applicable to mobile and portable appliances conforming to BS EN 449 or to appliances in touring caravans (see note 4). NOTE 1Attention is drawn to the Foreword concerning fuel effect applia
34、nces which burn gas so as to simulate a solid fuel fire. The only types of such appliance covered by this part of BS 5871 are those detailed in b) of the commentary and recommendations on clause 5 of this standard. Further guidance in this respect is given in Figure 1. NOTE 2Heat inputs in this docu
35、ment are based on net calorific value. Figures based on gross calorific value are given in parenthesis where deemed necessary. See also clause 5, commentary and recommendations b). NOTE 3Attention is drawn to the Foreword concerning the installation of used appliances. NOTE 4As well as normally cons
36、tructed dwellings, domestic premises include any permanently sited caravan, holiday homes, residential park homes and permanently moored boats. Additional requirements exist for these categories of premises and can be found in IGE/UP/8 7. Neither standard applies to gas installations in towed or mot
37、orized caravans. NOTE 5Appliances of over 20 kW: although many of the requirements within this standard will equally apply to appliances with a rated heat input in excess of 20 kW, additional or alternative requirements may also be applicable in order to achieve a safe installation. Reference should
38、 be made to the Building Regulations and supporting guidance or requirements thereto. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this British Standard. For dated references, subsequent amendments to, or
39、revisions of, any of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS 715, Specification for metal flue pipes, fittings, terminals and accessories for gas-fired appliances with a rated input not exceeding 60 kW. BS 1289-1, Flue bl
40、ocks and masonry terminals for gas appliances Part 1: Specification for precast concrete flue blocks and terminals. BS 5440-1, Installation of flues and ventilation for gas appliances of rated input not exceeding 60 kW (1st, 2nd and 3rd family gases) Part 1: Specification for installation of flues.
41、BS 5440-2:2000, Installation of flues and ventilation for gas appliances of rated input not exceeding 60 kW (1st, 2nd and 3rd family gases) Part 2: Specification for installation and maintenance of ventilation for gas appliances. BS 5482-1, Domestic butane- and propane-gas-burning installations Part
42、 1: Specification for installations at permanent dwellings. BS 5482-2, Domestic butane- and propane-gas-burning installations Part 2: Installations in caravans and non-permanent dwellings. BS 6891, Specification for installation of low pressure gas pipework of up to 28 mm (R1) in domestic premises (
43、2nd family gas). BS 7435-2, Fibre cement flue pipes, fittings and terminals Part 2: Specification for heavy quality fibre cement flue pipes, fittings and terminals. BS 7671, Requirements for electrical installations IEE Wiring Regulations (Sixteenth edition). Licensed Copy: sheffieldun sheffieldun,
44、na, Mon Dec 04 16:31:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5871-3:2001 2 BSI 04-2001 3 Terms and definitions For the purposes of this part of BS 5871, the following terms and definitions apply. 3.1 air vent non-adjustable purpose made grille allowing the passage of air 3.2 air vent free a
45、rea unobstructed cross-sectional area of an air vent, i.e. the sum of the areas of the individual apertures 3.3 associated independent canopy non-combustible canopy situated at the base of the flue system and which is permanently fixed above the appliance to facilitate the passage of the products of
46、 combustion into the flue 3.4 builders opening enclosure constructed by the builder to accommodate fireplace components 3.5 chimney breast projection beyond the thickness of a wall that contains the fireplace and flue 3.6 chimney pot prefabricated unit fitted at the flue outlet of a chimney 3.7 deco
47、rative fuel effect gas appliance appliance designed to simulate a solid fuel appliance for decorative purposes and intended to be installed so that the products of combustion pass unrestricted from the firebed to the chimney or flue see Figure 1c) 3.8 factory made insulated chimney complete assembly
48、 of all the essential factory made insulated sections, fittings and accessories necessary to convey the products of combustion to the outside air 3.9 firebed part of a decorative fuel effect gas appliance on which the gas burns 3.10 fireplace opening aperture formed in the face of the builders openi
49、ng, the fireplace recess, flue box or fire surround, if fitted 3.11 fireplace recess recess formed by the inclusion of fireplace components in the builders opening 3.12 flue box non-combustible enclosure that provides a substitute builders opening or fireplace recess NOTEIt may be used either within an existing masonry builders opening or form part of a false chimney breast construction. 3.13 flue system continuous flue, or a complete assembly of flue components, from a builders openin
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