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1、BRITISH STANDARD BS 7624:2004 Installation and maintenance of domestic direct gas-fired tumble dryers of up to 6 kW heat input (2nd and 3rd family gases) Specification ICS 97.060 ? Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 15:01:18 GMT+00:00 2006, Uncontro
2、lled Copy, (c) BSI BS 7624:2004 This British Standard was published under the authority of Standards Policy and Strategy Committee on 17 August 2004 BSI 17 August 2004 First published March 1993 Second edition 17 August 2004 The following BSI references relate to the work on this British Standard: C
3、ommittee reference GSE/30 Draft for Development 01/707909 DC ISBN 0 580 44184 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee GSE/30, Gas installations (1st, 2nd and 3rd family gases), upon which the following bodies we
4、re represented: Boiler and Radiator Manufacturers Association Ltd British Flue and Chimney Manufacturers Association BSI Consumer Policy Committee Catering Equipment Suppliers Association Centrica plc Council for Registered Gas Installers Department of Trade and Industry Health and Safety Executive
5、Heating and Ventilating Contractors Association ICOM Energy Association Institute of Domestic Heating and Environmental Engineers Institution of Gas Engineers and Managers LP Gas Association National Association of the Laundrette Industry Society of British Gas Industries Society of Laundry Engineer
6、s and Allied Trades Ltd Co-opted members The following body was also represented in the drafting of this standard, through subcommittees and panels: Kitchen Specialists Association Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank
7、 University, Fri Dec 08 15:01:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7624:2004 BSI 17 August 2004 i Contents Page Committee responsibleInside front cover Forewordii 1Scope1 2Normative References1 3Terms and definitions1 4Competence2 5Design and planning2 6Selection of tumble dryers3 7Locat
8、ion of tumble dryers4 8Siting and clearance4 9Ventilation (air supply)5 10Exhaust venting of tumble dryers5 11Gas connections6 12Restraining devices7 13Electrical wiring and connections7 14Commissioning7 15Information to be given to the user8 Bibliography12 Figure 1 Typical method of stacking a tumb
9、le dryer on another appliance using a stacking kit9 Figure 2 Wall and window vent terminal installations10 Figure 3 Installation using a typical restraining device11 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 15:01:18 GMT+00:00 2006, Uncontrolled Copy, (c)
10、BSI BS 7624:2004 ii BSI 17 August 2004 Foreword This British Standard has been prepared by Technical Committee GSE/30. It supersedes BS 7624:1993, which is to be withdrawn in November 2004. A period of three months has been allowed for users of the old standard to convert to the new standard. This r
11、evision to BS 7624 reflects changes to the relevant legislation and the publication of BS EN 1458-1:2000, which covers the safety of gas fired tumble dryers and replaces BS 5258-17. The previously accepted use of a tumble dryer in a flueless mode is not recognised in BS EN 1458 and, accordingly, thi
12、s standard only endorses the venting options detailed in the scope. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations
13、. In particular, attention is drawn to the following statutory regulations: The Gas Safety (Installation and Use) Regulations 1998 1 The Gas Safety (Installation and Use) (Northern Ireland) Regulations 2004 2 The Gas Appliances (Safety) Regulations 1995 3 The Building Regulations 2000, as amended 4
14、The Building Standards (Scotland) Regulations 1990, as amended 5 The Building Regulations (Northern Ireland) 6 The Gas Safety (Application) (Isle of Man) Order 1996 7 Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 12, an inside back cover an
15、d a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 15:01:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7624:2004 BSI 17 August 2004 1 1 Scope This Br
16、itish Standard specifies the installation (see Note 1) of direct gas-fired tumble dryers of up to 6 kW net heat input burning 2nd and 3rd family gases for use in permanent domestic dwellings (see Notes 2 and 3). It applies to any such tumble dryer used in conjunction with a flexible venting hose fit
17、ted to a wall or window vent terminal or, where the net heat input does not exceed 3kW, with a venting hose hung out of a window, so that combustion products and moisture are exhausted directly to the outside air. NOTE 1For the purposes of this standard, installation includes design, inspection and
18、commissioning. It is recognized that each of these tasks can be performed by the same person. NOTE 2As well as normally constructed dwellings, domestic premises include any permanently sited caravans, holiday homes, residential park homes and permanently moored boats. Additional requirements exist f
19、or these categories of premises and can be found in IGE/UP/8 8. Neither this standard nor IGE/UP/8 8 applies to gas installations in towed or motorised caravans. NOTE 3Whilst this standard specifies installations in domestic premises, it is recognized that it might also be referred to for similar in
20、stallations in commercial and industrial premises. In such cases, additional legislation might be applicable. Attention is drawn to the hazards that exist in certain locations, e.g. hairdressing salons, where the atmosphere or drying load can contain flammable vapours. 2 Normative References The fol
21、lowing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. BS 669-1, Flexible hoses, end fittings and sockets for g
22、as burning appliances Part 1: Specification for strip-wound metallic flexible hoses, covers, end fittings and sockets for domestic appliances burning 1st and 2nd family gases. BS 5440-2:2000, Installation and maintenance of flues and ventilation for gas appliances of rated input not exceeding 70 kW
23、(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 6891, Specification for installation of low p
24、ressure gas pipework of up to 28 mm (R1) in domestic premises (2nd family gas). BS 7671, Requirements for electrical installations The IEE Wiring Regulations. 3 Terms and definitions For the purposes of this British Standard, the following terms and definitions apply. 3.1 appliance flexible connecto
25、r pipe with appropriate connector ends, designed to have a considerable degree of flexibility to facilitate the connection of a gas appliance to an installation pipe and allow the appliance to be moved a short distance without the need for disconnection BS 669-1 3.2 direct gas-fired tumble dryer app
26、liance in which textile material is dried by tumbling in a rotating drum through which heated air and products of combustion are forced or induced by mechanical means NOTEHereafter referred to as tumble dryer. 3.3 exhaust venting process of removing moist air, including the products of combustion an
27、d lint, from a tumble dryer directly to the outside air Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 15:01:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7624:2004 2 BSI 17 August 2004 3.4 heat input quantity of energy used in unit time corresponding to the
28、 volumetric or mass flow rates, the calorific value used being the net or gross calorific value BS EN 778:1998 and BS EN 1319:1999 NOTE Heat inputs in this document are based on net calorific value. 3.5 ventilation process of supplying fresh air to, and/or removing air from a room, internal space, c
29、ompartment or garage 3.6 ventilation air air that may be used or intended to be used for purposes of combustion, cooling and/or exhaust venting of an appliance 4 Competence Persons who carry out the work shall be competent. The installation work shall be carried out by a business or self-employed pe
30、rson, who is a “member of a class of persons” approved for the time being by the Health and Safety Executive (HSE), as required by the Gas Safety (Installation and Use) Regulations 1. Persons who design the installation shall have a knowledge and understanding of the standards and regulations that a
31、pply to ensure that the completed plans will produce a safe and satisfactory installation. COMMENTARY AND RECOMMENDATIONS ON CLAUSE 4 At the time of publication, the body with HSE approval to operate and maintain a register of businesses who are members of a “class of persons” is the Council for Reg
32、istered Gas Installers (CORGI). Therefore, it is essential that all businesses or self-employed gas installers are registered with CORGI. Guidance on the individual competency required for gas work are those who, either hold a certificate of gas safety competence acceptable to CORGI which include (w
33、ithout limitation) the Accredited Certification Scheme (ACS) and/or the Gas Services S/NVQ that has been aligned to ACS. 5 Design and planning The following shall be ascertained before planning of the installation begins: a) the availability of gas supplies; b) the availability of adequate ventilati
34、on; c) the position of the proposed location of the tumble dryer in relation to doors, external walls (outside air) and to the probable position of fixtures, furniture and curtains; d) the electrical supplies available; e) the recommended method of installation given in the tumble dryer manufacturer
35、s literature; f) the availability of a stable and rigid base for the tumble dryer; and g) the most appropriate method of exhaust venting. COMMENTARY AND RECOMMENDATIONS ON CLAUSE 5 Collaboration is essential between those concerned with the design of a tumble dryer installation and those responsible
36、 for installing the tumble dryer, both at the planning stage and during the execution of the work. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 15:01:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7624:2004 BSI 17 August 2004 3 6 Selection of tumble dryers
37、Any new tumble dryer shall be one that has been marked by the manufacturer as being suitable for the gas with which it is to be supplied. It shall be suitable for its intended location (see Clause 7). Only used tumble dryers with which the manufacturers instructions are supplied or are otherwise ava
38、ilable shall be selected for installation. COMMENTARY AND RECOMMENDATIONS ON CLAUSE 6 The drying load capacity of the tumbler dryer should be borne in mind during selection together with the intended location and the method of ventilation (see Clause 9) and exhaust venting (see Clause 10). Tumble dr
39、yers covered by this standard are generally available with a range of accessories, e.g. exhaust venting hose, wall/window vent kit, stacking kit and restraining kit. Some of these items, for example, a vent hose, can be included with the tumble dryer. Tumble dryers covered by this standard are avail
40、able with rated heat inputs up to 6 kW. The input is quoted on the basis of net calorific value. The traditional UK system of using gross calorific value would give an equivalent rating of 6.6 kW input for natural gas. The installer should check the data given with a tumble dryer to establish the ba
41、sis on which the heat input is quoted. It should be noted that the heat input of the dryer determines which exhaust venting options are available for installation (see Clause 9). For the purposes of this standard the ratio of gross:net heat input is 1:1.11. For example, to convert a 5kW input applia
42、nce, gross c.v. to the equivalent net c.v. heat input: 5/1.1 = 4.504 kW heat input. New tumble dryers Of the tumble dryers covered by this standard, new tumble dryers fall within the scope of the European Gas Appliances Directive 9, implemented in the UK by the Gas Appliances (Safety) Regulations 3,
43、 which require new tumble dryers to be CE marked. Accordingly, installers should check that the tumble dryer is CE marked. Normally, a tumble dryer is certified to BS EN 1458-1, which classifies flue types as B22D and B23D. The installer should check that the packaging and the dryers data plate are
44、marked with at least the following information. a) The letters “GB”. b) The type of gas and appliance inlet pressure as follows: 1) for a tumble dryer adjusted for natural gas, “G20 and/or natural gas 20 mbar” plus the designation I2H; 2) for a tumble dryer adjusted for butane, “G30 and/or butane 29
45、 mbar” plus the designation I3B; 3) for a tumble dryer adjusted for propane, “G31 and/or propane 37 mbar” plus the designation I3P; 4) for a tumble dryer which will burn butane or propane gas at the correct pressure, “G30/G31 and/or butane/propane 29/37 mbar” plus the designation I3+. Where a tumble
46、 dryers data plate carries the letters CAT I or CAT II followed by the gas type designations, (i.e. 2H, 2P, 2B) then the tumble dryer may be used for different types of gases when adjusted to do so. In such a case, the installer should ensure that the tumble dryer is correctly adjusted. Used tumble
47、dryers In the case of a used tumble dryer, the original packaging is generally not available. Where the manufacturers instructions are not available, these should be obtained from the manufacturer or his agent before installation of the tumble dryer begins. Where a used tumble dryer carries the “CE”
48、 mark, its data plate is likely to carry the information on type of gas and appliance inlet pressure. In such a case, the installation should proceed in accordance with the manufacturers instructions, using the venting options specified in this standard. Licensed Copy: London South Bank University,
49、London South Bank University, Fri Dec 08 15:01:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7624:2004 4 BSI 17 August 2004 Where the tumble dryer does not carry a “CE” mark, it has to be borne in mind that other criteria could apply, such as surface temperatures, tumble dryer stability, ventilation, etc., and these need to be taken into account in the method of installation. The installer should satisfy himself that the tumble dryer is safe in construct
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