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1、BRITISH STANDARD BS 5871-2:2001 Specification for the installation of gas fires, convector heaters, fire/back boilers and decorative fuel effect gas appliances Part 2: Inset live fuel effect gas fires of heat input not exceeding 15 kW, and fire/back boilers (2nd and 3rd family gases) ICS 91.140.10;
2、97.100.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed copy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI BS 5871-2:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority
3、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 33272 1 Committees responsible for this British Standard The preparation
4、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 Committee of
5、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 Industries
6、 Co-opted members Amendments issued since publication Licensed copy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-2:2001 BSI 04-2001 i Contents Page Forewordii 1Scope1 2Normative references1 3Terms and definitions2 4Exchange of information and planning4 5Ap
7、pliances5 6 Materials and components8 7Location8 8Appliance sizing12 9Ventilation12 10Flueing13 11Appliance fixing18 12Fire precautions22 13Gas supply23 14Electricity supplies and wiring23 15Ventilation (fire/back boilers and fire/back circulators only)24 16Appliance fixing (fire/back boilers and fi
8、re/back circulators only)24 17Fire precautions (fire/back boilers and fire/back circulators only)28 18Water connections (fire/back boilers and fire/back circulators only)28 19Commissioning28 20Instructions and use of fireguards29 21User information and maintenance29 Annex A (informative) Calculation
9、 of required heat output of a fire30 Annex B (informative) Calculation of clearance flue flow31 Bibliography41 Figure 1 Types of fuel effect appliances covered by BS 58717 Figure 2 General layout Live fuel effect gas fire, with or without a back boiler9 Figure 3 Methods of using a flue liner in a ma
10、sonry chimney installation serving a gas appliance, other than a back boiler10 Figure 4 General installation11 Figure 5 Installations of appliances with fanned draught flues15 Figure 6 Inset live fuel effect gas fire with direct flue connection17 Figure 7 Method of installing an inset live fuel effe
11、ct gas fire to a masonry chimney where chairbrick or milner removal may be necessary, and using an existing solid fuel hearth19 Figure 8 Installation of a live fuel effect gas fire and combined back boiler where a chimney breast is extended to form a duct for pipework and wiring25 Figure 9 Installat
12、ion of a gas fire and combined back boiler using a back boiler enclosure and prefabricated chimney/flue system26 Figure B.1 Bubble leak indicator36 Figure B.2 Basic test box37 Figure B.3 Test box and flue for appliances that can be installed in a metal flue box38 Figure B.4 Collecting hood39 Figure
13、B.5 Collecting hood positioning40 Table 1 Temperatures and ventilation rates12 Table 2 Minimum void volumes and depths below gas fire flue spigots20 Table A.1 Fabric and ventilation heat losses for example A31 Table B.1 Test internal air pressures31 Table B.2 Wobbe number for test gases32 Table B.3
14、Inlet pressures for tolerances32 Table B.4 K values for reference gases35 Licensed copy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-2:2001 ii BSI 04-2001 Foreword This part of BS 5871 has been prepared under the direction of the Gas Standards Policy Commi
15、ttee and is a revision of BS 5871-2:1991, which is withdrawn. A period of three months has been allowed for users of the old standard to convert to the new standard. This part of BS 5871 specifies requirements for the installation of inset live fuel effect gas fires, which differ from decorative fue
16、l effect gas appliances in that they incorporate a heat exchanger and restrict the passage of the products of combustion between the appliance firebed and the chimney or flue. This revision provides an update of the previous standard and has been extended to cover both the new development of inset l
17、ive fuel effect gas fires combined with back boilers and also fires with a direct flue connection. In order to improve the layout of the standard, the requirements for the installation of fire/back boilers and fire/back circulators are now specified in clauses 15, 16, 17 and 18. BS 5871 continues to
18、 cover the different types of fuel effect appliances in a 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/b
19、ack boilers (2nd and 3rd family gases); Part 31): Decorative 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 serve
20、s to illustrate appliance types and link them to the appropriate part of BS 5871. It should be noted that the only fuel effect appliances covered by this part of BS 5871 are gas fires detailed in h) of the commentary and recommendations on 5 of this standard. The manufacturers instructions supplied
21、with fanned draught appliances in which the fan is either 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 5871-1 may als
22、o be referred to for the installation of used appliances, 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. At
23、tention is drawn to clause 5 concerning this particular aspect. 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 inclu
24、ded in some of the British Standards covering the safety of 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 te
25、st has been used as a key factor in determining whether or not certain appliances of 7 kW1) heat input or less require purpose provided ventilation for their installation. 1) Due to tolerances, this applies to a heat input of 7 kW on both net and gross calorific value. See clause 1, Scope, note 3. L
26、icensed copy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-2:2001 BSI 04-2001 iii 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 ar
27、rangement will 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. This standard allows manufacturers instructions to specify
28、 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 the manufact
29、urers instructions are followed. NOTE 1In 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 with this
30、 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. Users o
31、f 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) The Gas
32、 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 (Application
33、) 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 41 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, U
34、ncontrolled Copy, BSI w w w . b z f x w . c o m iv blank Licensed copy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-2:2001 BSI 04-2001 1 1 Scope This part of BS 5871 specifies installation requirements for inset live fuel effect gas fires of heat input not
35、 exceeding 15 kW (16.6 kW based on gross calorific value) burning 2nd and 3rd family gases for the purpose of heating rooms or spaces in domestic (see note 5) or commercial premises. Combined appliances of the type where a fire is used in conjunction with a boiler or circulator are also covered in s
36、o far as the installation of the combined appliance is concerned. The standard is applicable to appliances intended for installation either: a) within a builders opening and/or fireplace recess and which may, additionally, be suitable for installation in a purpose designed metal flue box and flue co
37、nforming to the constructional and temperature requirements of BS 715; or b) using a direct flue connection, if specified in the manufacturers instructions; or c) in the case of a room sealed appliance, using a flue terminal/air duct assembly supplied by the appliance manufacturer. This standard cov
38、ers the selection of a suitable appliance, the ventilation and flueing requirements, and other measures necessary to ensure a safe installation. The central heating and/or hot water system connected to a combined appliance is not within the scope of this standard and reference should be made to BS 5
39、449 and BS 5546 for this part of such an installation. This standard is not applicable to mobile and portable appliances conforming to BS EN 449 or to appliances in touring caravans (see note 5). The requirements for the installation of fire/back boilers and fire/back circulators are specified in cl
40、auses 15, 16, 17 and 18. 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 by this part of BS 5871 are those detailed in h) of the commentary and recommendations on 5 of this standar
41、d. Further guidance in this respect is given in Figure 1. NOTE 2Unless the context requires otherwise, inset live fuel effect gas fires are hereinafter referred to as fires. NOTE 3Heat inputs in this document are based on net calorific value. Figures based on gross calorific value are given in paren
42、thesis where deemed necessary. See also clause 5, commentary and recommendations f). NOTE 4Attention is drawn to the Foreword concerning the installation of used appliances. NOTE 5As well as normally constructed dwellings, domestic premises include any permanently sited caravan, holiday homes, resid
43、ential park homes and permanently moored boats. Additional requirements exist for these categories of premises and can be found in IGE/UP/8 9. Neither standard applies to gas installations in towed or motorized caravans 2 Normative references The following normative documents contain provisions whic
44、h, 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 of the publication referred to applies. BS 715, Specification for met
45、al 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 blocks and terminals. BS 4543-2, Factory-made insulated chimneys Part 2:
46、 Specification for chimneys with stainless steel flue linings for use with solid fuel fixed appliances. BS 4543-3, Factory-made insulated chimneys Part 3: Specification for chimneys with stainless steel fluelining for use with oil fired appliances. BS 5440-1, Installation of flues and ventilation fo
47、r 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, 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 install
48、ation and maintenance of ventilation for gas appliances. BS 5449, Specification for forced circulation hot water central heating systems for domestic premises. Licensed copy:PONTYPRIDD COLLEGE, 13/03/2008, Uncontrolled Copy, BSI w w w . b z f x w . c o m BS 5871-2:2001 2 BSI 04-2001 BS 5482-1, Domes
49、tic butane- and propane-gas-burning installations Part 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 5482-3, Domestic butane- and propane-gas-burning installations Part 3: Installations in boats, yachts and other vessels. BS 5546, Specification for installation of gas hot water supplies for domestic purposes (1st, 2nd and 3rd family gases)