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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:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI BS 5871-3:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee an
3、d 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 preparation of this British Standard was
4、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 Committee of BSI Council for Registered Ga
5、s 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 Industries Co-opted members Amendments
6、issued since publication Amd. No.DateComments Licensed copy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-3:2001 BSI 04-2001 i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Normative references1 3Terms and definitions2 4Exchange
7、 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 and use of fireguards23 16User information and ma
8、intenance23 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 installation in a typical flue box (see 9.3.2)14
9、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 determine chimney size using method 2 for cases 4, 5 and
10、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 A.5 Collecting hood positioning33 Table A.1 Test i
11、nternal 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:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-3:2001 ii BSI 04-2001 Foreword This part of BS 5871
12、 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 revision reflects experience gained in the use of the 1991 edit
13、ion 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 single series of British Standards, as follows: Part 1: Gas fi
14、res, 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 fuel effect gas appliances of heat input not exceeding 20 kW (
15、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 appropriate part of BS 5871. It should be noted that the only fuel eff
16、ect 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 integral with the appliance or with the flue system will make
17、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, where appropriate, providing the manufacturers instructions ar
18、e 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 aspect. Arising from European Standards harmonization, some Brit
19、ish 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 of appliances dealt with by BS 5871, will not be given in Europ
20、ean 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 not certain appliances of 7 kW2) heat input or less require p
21、urpose 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 will provide Notified Test Houses under the Gas Appliance Direc
22、tive 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 tolerances, this applies to a heat input of 7 kW on both net and
23、gross calorific value. See clause 1, Scope, note 2. Licensed copy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-3:2001 BSI 04-2001 iii This standard allows manufacturers instructions to specify a method of installation, testing, commissioning or maintenance
24、 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 the manufacturers instructions are followed. NOTEIn the preparation of this
25、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 with this specification, the user has to comply with all its requirements. H
26、e 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. Users of British Standards are responsible for their correct application.
27、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) The Gas Appliances (Safety) Regulations 1995 (S.I. 1629). 2 c) The Buildin
28、g 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 (Application) Order 1996 (Isle of Man). 6 Summary of pages This document compri
29、ses 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:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m iv blank Licensed c
30、opy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-3:2001 BSI 04-2001 1 1 Scope This part of BS 5871 specifies installation requirements for open flued decorative fuel effect gas appliances of heat input not exceeding 20 kW (see note 2) burning 2nd and 3rd f
31、amily 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 suitable appliance, the ventilation and flueing requirements, and other measures necessary to ensur
32、e 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. (See Figure 5.) It does not cover the installation of flueless or room-sealed appliances. This stan
33、dard 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 appliances which burn gas so as to simulate a solid fuel fire. The only types of such appliance covered
34、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 document are based on net calorific value. Figures based on gross calorific value are given in parenth
35、esis 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 constructed dwellings, domestic premises include any permanently sited caravan, holiday homes, residen
36、tial 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 motorized caravans. NOTE 5Appliances of over 20 kW: although many of the requirements within this sta
37、ndard 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 be made to the Building Regulations and supporting guidance or requirements thereto. 2 Normative
38、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 revisions of, any of these publications do not apply. For undated references, the latest edition o
39、f 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 blocks and masonry terminals for gas appliances Part 1: Specification for precast concrete flue bloc
40、ks 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. BS 5440-2:2000, Installation of flues and ventilation for gas appliances of rated input not exceed
41、ing 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 1: Specification for installations at permanent dwellings. BS 5482-2, Domestic butane- and propan
42、e-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 (2nd family gas). BS 7435-2, Fibre cement flue pipes, fittings and terminals Part 2: Specification
43、for heavy quality fibre cement flue pipes, fittings and terminals. BS 7671, Requirements for electrical installations IEE Wiring Regulations (Sixteenth edition). Licensed copy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-3:2001 2 BSI 04-2001 3 Terms and de
44、finitions 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 area unobstructed cross-sectional area of an air vent, i.e. the sum of the areas of the individual apertures 3.
45、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 combustion into the flue 3.4 builders opening enclosure constructed by the builder to accommodate fireplace c
46、omponents 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 decorative fuel effect gas appliance appliance designed to simulate a solid fuel appliance for decorative purposes
47、 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 of all the essential factory made insulated sections, fittings and accessories necessary to convey the produc
48、ts 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 opening, the fireplace recess, flue box or fire surround, if fitted 3.11 fireplace recess recess formed by the incl
49、usion 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 opening, fireplace recess, flue box or associated independent canopy to a chimney pot, terminal or flu