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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 5871 : Part 1 : 1991 I
2、ncorporating Amendment No. 1 ICS 97.100.20; 91.140.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specification for Installation of gas fires, convector heaters, fire/back boilers and decorative fuel effect gas appliances Part 1. Gas fires, convector heaters and fire/back
3、boilers (1st, 2nd and 3rd family gases) Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:30:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Gas Standards Policy Committee, was published under the authority of the Standards
4、 Board and comes into effect on 30 September 1991 BSI 05-1999 First published July 1980 Second edition September 1991 The following BSI references relate to the work on this standard: Committee reference GSE/30 Draft for comment 88/70243 DC ISBN 0 580 19811 1 BS 5871 : Part 1 : 1991Issue 2, May 1999
5、 Amendments issued since publication Amd. No.DateText affected 10454May 1999Indicated by a sideline Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Gas Standards Policy Committee (GSE/-) to Technical Committee GSE/30, upon which the foll
6、owing bodies were represented: British Flue and Chimney Manufacturers Association British Gas plc Confederation for the Registration of Gas Installers Consumer Policy Committee of BSI Department of the Environment Department of Trade and Industry (Consumer Safety Unit, CA Division) Health and Safety
7、 Executive Institute of Domestic Heating and Environmental Engineers Institution of Gas Engineers Liquefied Petroleum Gas Industry Technical Association (UK) Society of British Gas Industries Trades Union Congress The following bodies were also represented in the drafting of the standard, through su
8、bcommittees and panels: Decorative Gas Fire Manufacturers Association Chartered Institution of Building Services Engineers Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:30:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Issue 1, May 1999BS 5871-1:1999 BSI 05-1999a Summary of pages The foll
9、owing table identifies the current issue of each page. Issue 1 indicates that a page has been introduced for the first time by amendment. Subsequent issue numbers indicate an updated page. Vertical sidelining on replacement pages indicates the most recent changes (amendment, addition, deletion). Pag
10、eIssuePageIssue Front cover Inside front cover a b 1 and 2 3 4 2 2 1 blank original 2 original 5 6 7 8 9 to 28 Inside back cover Back cover original original original 2 original original 2 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:30:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI bbla
11、nk Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:30:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5871 : Part 1 : 1991 1 Contents Page Committees responsibleInside front cover Foreword3 Specification Section 1. General 1Scope4 2Definitions4 3Exchange of information and planning5 Secti
12、on 2. Selection of appliances 4Appliances6 5Materials and components8 6Location8 7Appliance sizing8 Section 3. Installation 8Ventilation9 9Flueing9 10Appliance fixing13 11Fire precautions22 12Gas connections24 13Electricity supplies and wiring24 14Water connections24 Section 4. Commissioning, instru
13、ctions and use of fireguards, and user information 15Commissioning26 16Instructions and use of fireguards26 17User information26 Appendix ACalculation of required heat output of an appliance27 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:30:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
14、BS 5871 : Part 1 : 1991 2 Page Tables 1Temperatures and ventilation rates8 2Minimum void volumes and depths below gas fire flue spigots14 3Fabric and ventilation heat losses for example A28 4Fabric and ventilation heat losses for example B28 Figures 1Types of fuel effect appliances covered by BS 587
15、17 2Method of installing a gas fire in conjunction with a flue box and flue pipe11 3Methods of using a flexible flue liner in a masonry chimney installation12 4Installation of side exit fanned draught flue system13 5Method of installing a gas fire on an existing solid fuel hearth15 6Method of wall m
16、ounting a gas fire on an existing chimney breast16 7Method of installing a gas fire on the hearth of a precast block chimney17 8Method of installing a gas fire on a proprietary fire surround18 9Method of installing an open-flued convector with integral draught diverter on an existing solid fuel hear
17、th19 10Installation where a chimney breast is extended to form a duct for pipework and wiring21 11Installation using a back boiler enclosure box and chimney or flue pipe22 12Typical unconcealed gas supply system to a gas fire25 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:30:17 GMT+00:0
18、0 2006, Uncontrolled Copy, (c) BSI BSI 05-19993 Issue 2, May 1999BS 5871 : Part 1 : 1991 1)Revision of BS 6714 : 1986. Foreword This Part of BS 5871 has been prepared under the direction of the Gas Standards Policy Committee and is a revision of BS 5871 : 1980 which is withdrawn. This revision is ba
19、sed on the 1980 edition but now covers 1st and 3rd family gases in addition to 2nd family gases and gives requirements for installation The revision and restructuring of BS 5871 has been undertaken to reflect appliance developments which have taken place since BS 5871 was published in 1980. These in
20、clude the wider application of fanned draught flueing, the introduction of condensing appliances, and an increase in the range of fuel effect appliances which burn gas so as to simulate a solid fuel fire. In the case of fuel effect appliances, the outward similarity in appearance between appliances,
21、 coupled with the diversity of terms used to describe them, has sometimes led to problems in identifying the relevant installation criteria. Against this background, BS 5871 has been split into Parts so as to include all fuel effect appliances in a single series of British Standards as follows. BS 5
22、871 : Part 1Gas fires, convector heaters and fire/back boilers (1st, 2nd and 3rd family gases) BS 5871 : Part 2Inset live fuel effect gas fires of heat input not exceeding 15 kW (2nd and 3rd family gases) BS 5871 : Part 31)Decorative fuel effect gas appliances of heat input not exceeding 15 kW (2nd
23、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 effect a
24、ppliances covered by this Part of BS 5871 are gas fires detailed in (h) of the commentary and recommendations on 4.1 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 refer
25、ence to the appropriate Part of BS 5871. NOTE. In 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 : Part 1. This format allows the requirements of the specification to be supported by recommendations. To co
26、mply with 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. Compliance with a British Standard does not of itself confer immunity from legal obli
27、gations. In particular, attention is drawn to the following statutory regulations: (a) The Gas Safety (Installation and Use) Regulations (S.I. 1998 No. 2451). (b) The Gas Appliances (Safety) Regulations 1995 (S.I. 1629). (c) The Building Regulations 1991 (S.I. 1991 No. 2768 as amended by S.I. 1994 N
28、o. 1850). (d) The Building Standards (Scotland) Regulations 1990 (S.I. 2179) (as amended). (e) Building Regulations (Northern Ireland) (Statutory Rules of Northern Ireland 1994 No. 243). (f) The Gas Safety (Application) order 1996 (Isle of Man). A British Standard does not purport to include all the
29、 necessary provisions of a contract. Users of British Standards are responsible for their correct application. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:30:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 BS 5871 : Part 1 : 1991Section 1 Section 1. General 1 Scope This Part of BS 5871
30、 specifies the installation requirements for flued and flueless fixed space heating appliances burning 1st, 2nd and 3rd family gases for the purpose of heating rooms or spaces in domestic or commercial premises. These types of appliance are known as radiant gas fires, radiant convector gas fires and
31、 convector heaters. Convector heaters in the form of greenhouse heaters are only covered in respect of single appliance installations. Combined appliances of the type where a gas fire is used in conjunction with a boiler or circulator are also covered in so far as the installation of the combined ap
32、pliance is concerned. This standard covers the selection of a suitable appliance, the flueing and/or ventilation 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 sta
33、ndard and reference should be made to BS 5449 and BS 5546 for this part of such an installation. NOTE 1. Attention 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
34、 detailed in (h) of the commentary and recommendations on 4.1 of this standard. Further guidance in this respect is given in figure 1. NOTE 2. The titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this Part of BS 5871 the f
35、ollowing definitions apply. 2.1 air vent A non-adjustable purpose made grille allowing the passage of air. 2.2 back boiler A water heating appliance designed to fit into a fireplace recess or builders opening to provide domestic hot water and/or central heating. 2.3 back circulator An appliance with
36、 a rated input not exceeding 8 kW, designed to fit into a fireplace recess or a builders opening, primarily for the supply of domestic hot water. 2.4 balanced-flued appliance A room-sealed appliance which draws its combustion air from a point adjacent to the point at which the combustion products ar
37、e discharged, the inlet and outlet being so disposed that wind effects are substantially balanced. 2.5 builders opening The enclosure constructed by the builder to accomodate fireplace components. 2.6 closure plate A non-combustible plate for closing off substantially a fireplace opening when instal
38、ling a gas fire. 2.7 condensing appliance An appliance designed to make use of the latent heat in the combustion products water vapour by condensing the water vapour within the appliance. 2.8 convector heater A heater that discharges heated air only into the space in which it is installed. 2.9 coole
39、r device A device fitted at the spigot outlet of a gas fire to prevent localized overheating of a precast flue-block chimney. 2.10 dress-guard A guard complying with BS 1945 and fitted to the front of and forming part of a gas fire. 2.11 fanned draught flue system A flue system in which the draught
40、is produced by a fan. 2.12 fireplace opening The aperture formed in the face of the builders opening, the fireplace recess, flue box or fire surround, if fitted. 2.13 fireplace recess The recess formed by the inclusion of fireplace components in the builders opening. 2.14 fire surround A purpose-des
41、igned setting for a gas fire, fitted against a wall at the base of a flue and usually incorporating a hearth. 2.15 flue box A non-combustible enclosure that provides a substitute builders opening or fireplace recess. 2.16 flue spigot restrictor A plate designed to be fitted to a flue spigot of a gas
42、 fire to reduce the effect of flue pull on the appliance. 2.17 gas fire A flued appliance for heating one room and incorporating a radiating surface, either in the form of a radiant or an imitation fuel. 2.18 greenhouse heater A flueless convector heater of not more than 4 kW specially designed to b
43、e able to tolerate a partially vitiated environment and, when not required to be firmly secured, to be self-extinguishing if knocked over. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:30:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Section 1BS 5871 : Part 1 : 1991 5 2.19 hearth A floor
44、-level slab of fire-resisting material to prevent overheating of the floor beneath a heating appliance. 2.20 imitation fuel A component designed to simulate solid fuel and be in contact with gas flames. 2.21 infill panel A panel of fire-resisting material having an opening to accommodate a standard
45、closure plate, used in a fireplace opening which is too large for the closure plate alone. 2.22 internal space An interior space which is not a room, such as a hall, passageway, etc. 2.23 open flue system A flue system that is open to a room or internal space at each appliance position. NOTE. A flue
46、 system which does not incorporate a draught diverter or other flue break is sometimes referred to as a closed-flued system. 2.24 open-flued appliance An appliance designed to be connected to an open flue system, its combustion air being drawn from the room or space in which it is installed. 2.25 ra
47、diant A component forming part of a gas appliance and designed to become incandescent when heated by a gas flame. 2.26 radiant convector gas fire A gas fire designed to emit heat by both radiation and convection. 2.27 radiant gas fire A gas fire designed to emit heat mainly by radiation. 2.28 room-s
48、ealed appliance An appliance which, when in operation, has the combustion system isolated from the room in which the appliance is installed. 2.29 ventilation The process of supplying fresh air to, and removing vitiated air from, a room or internal space. 3 Exchange of information and planning NOTE.
49、Collaboration is essential between those concerned with the design and installation, both at the planning stage and during the execution of the work. Particular matters that shall be considered are: (a) availability of gas supplies; (b) type of building, form of construction and level of thermal insulation; (c) location, orientation and exposure of building; (d) size, layout and purpose of rooms; (e) assessment of heat requirements (see clause 7 and appendix A); (f) size, height, type and route of flue together with materials of construction; (g) provision of adequate ventilat