BS 6762-2-1991 Services for leisure accommodation vehicles and transportable accommodation units - Code of practice for the installation of solid fuel fired heating in park homes a.pdf

1、BRITISH STANDARD BS6762-2: 1991 Services for leisure accommodation vehicles and transportable accommodation units Part 2: Code of practice for the installation of solid fuel fired heating in park homes and transportable accommodation unitsBS6762-2:1991 This British Standard, having been prepared und

2、er the directionof the Basic Data and Performance Criteria for Civil Engineering and Building Structures Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 28June1991 BSI 04-1999 The following BSI references relate to the work on this standa

3、rd: Committee reference BDB/6 Draft for comment86/12565DC ISBN 0 580 18812 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Basic Data and Performance Criteria for Civil Engineering and Building Structures Standards Policy Committee (BD

4、B/-) to Technical Committee BDB/6, upon which the following bodies were represented: Association of British Solid Fuel Appliances Manufacturers British Holiday and Home Parks Association Limited Building Employers Confederation Caravan Club Chartered Society of Designers Chief and Assistance Chief F

5、ire Officers Association Consumer Policy Committee of BSI Department of Health Department of the Environment Department of Transport Fibre Building Board Organisation (FIDOR) Home Office Institute of Building Control Institution of Electrical Engineers Institution of Environmental Health Officers In

6、stitution of Fire Engineers Liquefied Petroleum Gas Industry Technical Association (UK) Local Authority Organizations National Caravan Council Limited National Prefabricated Building Association Ltd. Royal Institute of British Architects Society of Motor Manufacturers and Traders Limited Solid Fuel

7、Advisory Service Trades Union Congress Amendments issued since publication Amd. No. Date CommentsBS6762-2:1991 BSI 04-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Ventilation 1 4 Appliance output 1 5 Materials and components 1 5.1 General 1 5

8、.2 Chimneys and appliance connections 1 5.3 Fuel storage 1 6 Installation 1 6.1 Siting of appliances 1 6.2 Appliances 1 6.3 Pipework 2 6.4 Air for combustion 2 6.5 Draught stabilizers 2 6.6 Ventilation of appliance enclosures 2 6.7 Protection of combustible material 2 6.8 Hearth 2 6.9 Chimney 3 6.10

9、 Chimney terminal 4 6.11 Protective casing 4 6.12 Dampers 4 6.13 Accessibility of chimney assembly 4 7 Warning plate 5 7.1 Fitting 5 7.2 Wording 5 7.3 Size of lettering 5 8 Users handbook 5 8.1 Information on operation, maintenance and safety 5 8.2 Maintenance and general instructions for the owner

10、5 8.3 Operating instructions for the occupant 5 8.4 Safety precautions for the occupant 5 Appendix A Test for determination of temperature of adjacent combustible material 8 Appendix B Calculation of hot face temperature and additional insulation thickness 9 Figure 1 Diagrammatic representation of w

11、eathering at penetration of roof by combined chimney unit 3 Figure 2 Diagrammatic plan of appliance enclosure and hearth 4 Figure 3 Diagrammatic representation of weathering at penetration of pitched roof and flat roof by factory-made insulated chimney 6 Figure 4 Diagrammatic section through applian

12、ce enclosure and hearth 7 Figure 5 Heat flow 10 Table 1 Temperature readings of sensors in C 8 Publications referred to Inside back coverBS 6762-2:1991 ii BSI 04-1999 Foreword This Part of BS6762 has been prepared under the direction of the Basic Data and Performance Criteria for Civil Engineering a

13、nd Building Structures Standards Policy Committee. It is a revision of BS5601-2:1978, which is withdrawn. It is one of a series that is being published for leisure accommodation vehicles and transportable accommodation units. The other Parts of BS6762 are: Part 1 1) : Ventilation; Part 3: Oil-fired

14、heating systems; Part 4 1) : Liquefied petroleum gas installations; Part 5: Low voltage electrical installations; 1) Part 6 1) : Water supply; Part 7 1) : Drainage. This standard aligns with the other Parts of BS6762. Its main purpose is to provide increased safety for occupants of park homes and tr

15、ansportable accommodation units by lessening the risk of fire and reducing the likelihood of accidents caused by escaping fumes. It is recommended that open fires should not be installed in park homes nor transportable accommodation units. This revision is specifically limited to the installation of

16、 closed heating appliances which are solely used for burning solid smokeless mineral fuel; this was implicit in the previous edition of the standard but not stated. The British Standards published for park homes and transportable accommodation units are, respectively, BS3632 and BS6492-1 and BS6492-

17、2. Since the publication of the previous edition, uninsulated chimneys have generally been superseded by combined units and by factory-made insulated chimneys because of their safety and convenience. In view of these advantages, this revision deals solely with the installation of factory-made insula

18、ted chimneys complying with BS4543, which limits the rated output of any one appliance, or of combined units comprising a cast iron flue with an insulating outer pipe, to45kW. It should be noted that the requirements of BS4626 and BS4989 do not permit the installation of solid fuel fired heating app

19、liances in touring trailer caravans or in holiday caravans, nor should they be installed in motor caravans. Insulating materials consisting of asbestos reinforced cement or other asbestos based products should not be used to provide non-combustible surfaces or for other purposes. NOTEThe manufacture

20、 and use of all asbestos based products is covered by the requirements of the Control of Asbestos at Work Regulations1987, introduced on1 March1988. These set out comprehensive provision covering work activities involving exposure to asbestos. Advice on how to comply with these regulations can be ob

21、tained from the manufacturers of the material, from the Asbestos Information Centre, St Andrews House, 22-28 High Street, Epsom, Surrey, KT198AH, from the local area office of the Health and Safety Executive or from the Environmental Department of the Local Authority. WARNING. Breathing asbestos dus

22、t is dangerous to health and precautions have to be taken during the manufacture and use of these products. Particular note has to be taken of the Asbestos Products (Safety) Regulations1985 and the Asbestos Products (Safety) (amendment) Regulations1987, made under the Consumer Safety Act1978, and al

23、so of the Asbestos (Prohibitions), Regulations1985 2)and the Asbestos (Prohibitions) (amendment) Regulations1988 made under the Health and Safety at Work etc Act1974, which prohibit the supply of products containing amosite or crocidolite (“brown” asbestos and “blue” asbestos respectively) and set o

24、ut requirements for the labelling of all products containing asbestos. All the above legislation implement European Directives. 1) In preparation. 2) Parallel regulations for Northern Ireland came into force on6 March1986.BS 6762-2:1991 BSI 04-1999 iii A British Standard does not purport to include

25、all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi to

26、iv, pages1to10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.iv blankBS 6762-2:1991 BSI 04-1999 1 1 Scope This Part of BS6762 gives recommend

27、ations for the installation in park homes and transportable accommodation units of closed heating appliances having a rated output of up to and including45kW, burning solid smokeless mineral fuel and fitted with factory-made insulated chimneys or combined chimney units. It covers room heaters, with

28、or without boiler, cookers with integral boilers and independent boilers that provide heating or hot water. It covers safety precautions and includes details of relevant sizes. It does not cover the installation of open fires. NOTEThe titles of the publications referred to in this standard are liste

29、d on the inside back cover. 2 Definitions For the purposes of this Part of BS6762 the definitions in BS1846-1, BS6760 and BS6100-3.1 apply. 3 Ventilation General ventilation should be provided in accordance with the recommendations of BS5601-1. For additional ventilation required for combustion and

30、details of the air inlets see6.4 and6.6. 4 Appliance output Heating appliances installed should have an output that provides, without over-running and when the external temperature is0 C, a temperature within living areas of20 C and within halls and passages, etc.of13 C. 5 Materials and components 5

31、.1 General Materials and components used should comply with the following British Standards as appropriate: 5.2 Chimneys and appliance connections 5.2.1 Chimneys Each appliance should be provided with a chimney, taken through the roof. This may be a factory-made insulated chimney that complies with

32、BS4543-2 when tested in accordance with BS4543-1, or a combined chimney unit consisting of a cast iron flue that complies with BS41 with an insulating pipe made of material that is classified as non-combustible when tested in accordance with BS476-4. 5.2.2 Connection to appliance Materials for fitti

33、ngs for connections between an appliance and its chimney should be in accordance with the recommendations of6.1 of BS6461-2:1984. 5.2.3 Access for cleaning Provision should be made for the flue and chimney to be swept easily and efficiently and for flue deposits to be cleaned from the appliance. 5.2

34、.4 Size of flue The size of the flue should be not less than that of the cross-sectional area of the outlet of the appliance and should be in accordance with the recommendations of Table 1 of BS6461-2:1984. 5.3 Fuel storage It is essential that no provision be made for fuel to be stored in or under

35、a park home or transportable accommodation unit. 6 Installation 6.1 Siting of appliances Heating appliances should not be sited where they may cause obstruction, particularly to passages and escape routes. They should not be positioned where they could create a fire hazard or damage surrounding mate

36、rials or fold-away furnishings such as beds and tables, whether these are folded away or in position for use. 6.2 Appliances All appliances should be installed in accordance with the recommendations of BS8303 and should comply with the following British Standards as appropriate: pipe threads BS21 ca

37、st iron flue pipes and fittings BS41 copper tube fittings BS864-2 cookers with integral boilers BS1252 brazing BS1723 back boilers BS3377 room heaters BS3378 solid smokeless fuel boilers BS4433-1 or BS4433-2 factory-made insulated chimneys BS4543-2 cookers with integral boilers BS1252 back boilers B

38、S3377 room heaters BS3378 solid smokeless fuel boilers BS4433-1 or BS4433-2BS6762-2:1991 2 BSI 04-1999 An operating tool or tools should be provided so that hot surfaces do not have to be touched by hand. 6.3 Pipework 6.3.1 Branch connections Connections for branches from a boiler to water service p

39、ipes should be made only with pipe fittings. 6.3.2 Ferrous pipes Where ferrous pipes or pipe fittings with screw threads are used, all threads should comply with BS21. 6.3.3 Copper pipes Where copper pipes or pipe fittings are used, joints should comply with BS864-2. 6.3.4 Other joints Where joints

40、are not made in accordance with6.3.2 and6.3.3, soldering, welding or brazing should be used. Brazing should be in accordance with BS1723. 6.3.5 Identification of pipelines Where there is risk of confusion, pipelines should be marked with appropriate identification colours as specified in BS1710. 6.4

41、 Air for combustion For all appliances, whether free-standing, inset or built-in, air for combustion should be provided by means of an air inlet or inlets at low level through the base of an external wall or through the floor and positioned as closely as possible to the appliance. All such inlets sh

42、ould be covered with mesh screens that will give a total free area of ventilation of not less than550mm 2 /kW of the rated output of the appliance. Such screens should have apertures of not less than6 mm nor more than9 mm in any direction and they should be accessible for cleaning. Fine mesh should

43、not be used as it is liable to become blocked. 6.5 Draught stabilizers Where an appliance is fitted with a draught stabilizer or where one is fitted to a chimney in the same room as the appliance, an additional air inlet or inlets should be provided from the exterior with a total free area of ventil

44、ation of at least300mm 2 /kW of the rated output of the appliance. All such inlets should be fitted with mesh screens as described in6.4. 6.6 Ventilation of appliance enclosures Where an appliance is built into an enclosed space, air inlets should be provided at or near the bottom of the enclosed sp

45、ace with a minimum free area of ventilation of500mm 2 /kW of the rated output of the appliance. All such inlets should be covered with mesh screens as described in6.4. The air outlet from the enclosed space, which includes the appliance and its chimney, should be through the castellations in the roo

46、f collar (see6.9.2). 6.7 Protection of combustible material Provision should be made to protect any combustible material adjacent to any appliance, flue or forced air duct to ensure that its temperature does not exceed100 C when tested in accordance with Appendix A. At no time should the temperature

47、 at the position of sensor1 in Figure 1 exceed300 C. It is essential that any method of protection be verified for its effectiveness, in at least one model of each range produced, by a means of a practical test carried out in accordance with Appendix A. Where effectiveness is so proved, other models

48、 in the range employing the same system can be deemed to be acceptable. 6.8 Hearth An appliance should stand on and be firmly bolted to a reinforced concrete hearth designed to accept and transfer into the structure, without deflection or cracking, the thermal stresses, the static loads imposed duri

49、ng use and transportation and the dynamic loads encountered during transportation. The hearth should extend at least150mm at each side of an appliance and at least300mm at the front, or150mm if a50mm upstand is provided. The size of the tongue of the hearth at the rear of an appliance should be greater than the base of the appliance (see Figure 2). There should be no combustible material below or within150mm of the base of the appliance. Where protection is provided at the side of an appliance, the hearth may form part of the floor of the park ho