1、BRITISH STANDARD BS799-3:1981 Specification for Oil burning equipment Part3: Automatic and semi-automatic atomizing burners up to36 litres per hour UDC697:683.8/.9:662.942.2BS799-3:1981 This British Standard, having been prepared under the directionof the Refrigeration, Heating and Air Conditioning
2、Standards Committee, was published under the authority ofthe Executive Board and comes into effect on 30 April 1981 BSI04-1999 First published March 1970 First revision April 1981 The following BSI references relate to the work on this standard: Committee reference RHE/13 Draft for comment79/76768DC
3、 ISBN 0 580 12081 3 Cooperating organizations The Refrigeration, Heating and Air Conditioning Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: Association of Manufacturers of Domestic Electricity Supply Industry in England
4、 and Electrical Appliances Wales* Association of Consulting Engineers Engineering Equipment Users Association Boiler and Radiator Manufacturers Heating and Ventilating Contractors Association Limited Association British Combustion Equipment Hevac Association Manufacturers Association* Institute of E
5、nergy* British Gas Corporation Institute of Refrigeration British Refrigeration and Air Conditioning Institution of Gas Engineers Association Lloyds Register of Shipping Building Services Research and Information Manufacturers Association of Radiators and Association Convectors Ltd. Chartered Instit
6、ution of Building Services* Ministry of Defence Department of Energy (Energy Technology) National Coal Board Department of the Environment (PSA)* Society of British Gas Industries Department of Health and Social Security Water-tube Boilermakers Association* The organizations marked with an asterisk
7、in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: Associated Offices Technical Committee Fire Protection Association Association of Shell Boilermakers Greater London Council British Tar indust
8、ry Association Health and Safety Executive Cbmpe Home Office Chief and Assistant Chief Fire Officers Institution of Fire Engineers Association Oil Companies Materials Association Dobeta Limited Process Plant Association Engineering Industries Association Individual expert Fire Offices Committee Amen
9、dments issued since publication Amd. No. Date of issue CommentsBS799-3:1981 BSI 04-1999 i Contents Page Cooperating organizations Inside front cover Foreword ii Section 1. General 1 Scope 1 2 References 1 3 Definitions 1 Section 2. Operation of oil burner 4 Oil feed and cut-off 1 5 Preparation of oi
10、l for burning 1 6 Ignition 1 7 Air supply 1 8 Control system for causing burner shut-down 1 Section 3. Materials and components 9 Materials 2 10 Oil filters 3 11 Oil pumps 3 12 Valves 3 13 Oil pressure gauges 4 14 Painting and identification 4 15 Electrical equipment 4 16 Operating instructions 4 17
11、 Marking 4 Publications referred to 6BS799-3:1981 ii BSI 04-1999 Foreword This publication, prepared under the direction of the Refrigeration, Heating and Air Conditioning Standards Committee, forms Part3 of the British Standard on oil burning equipment and deals with atomizing burners up to36 litre
12、s per hour. It was first published in1970 and was amended in1974. Because ISO3544 has been published as a dual numbered standard as BS799-6, the contents of the1970 edition of Part3 that are now covered by Part6 have been omitted in this revision. Where information is required relating to the instal
13、lation of the types of oil burner covered by this standard, reference should be made to code of practice BS5410-1 or BS5410-2 as appropriate. The title of the1970 edition included the term “associated equipment”. “Associated equipment” is now dealt with in other British Standards including BS799-5,
14、BS4876, BS5410-1 and BS5410-2, and BS4256-1, BS4256-2 and BS4256-3. Certification. Attention is drawn to the certification facilities described on the inside back cover of this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Stand
15、ards 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, pages i and ii, pages1 to6, an inside back cover and a back cover. This sta
16、ndard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.BS799-3:1981 BSI 04-1999 1 Section 1. General 1 Scope This Part of BS799 specifies requirements for materials from which all component parts of
17、 the oil burning equipment shall be constructed, and also deals with such points of component design and plant layout as are fundamental to the proper functioning of such equipment. The range of equipment includes: a) automatic and semi-automatic oil burners of the monobloc type as defined in Part6
18、of this standard; b) dual fuel gas/oil burners when using fuel oil. NOTESee Appendix A of BS5885:1980. The standard is applicable to burners with firing rates up to36litres per hour that are suitable for either class C2 or class D fuels (see BS2869) or both, as stated by the manufacturer. 2 Referenc
19、es The titles of the Publications referred to in this standard are listed on page6. 3 Definitions For the purposes of this Part of BS799 the definitions given in Part6 apply. Section 2. Operation of oil burner 4 Oil feed and cut-off 4.1 Oil feed. Means shall be provided for ensuring an adequate supp
20、ly of oil to the burner. 4.2 Oil cut-off. Means shall be provided for: a) regulating the oil supply to the combustion chamber within the required limits; b) shutting off the oil supply to the combustion chamber within the times specified in clauses3 and4 of Part6:1979 of this standard when the burne
21、r is idle or when the flame is not established. 5 Preparation of oil for burning Means shall be provided for introducing oil into the combustion chamber in such a condition that it will ignite readily and burn in a safe manner. Burners shall be fitted with a device to cut off the supply of fuel when
22、 the oil pressure is insufficient to ensure good atomization. NOTEFor further information, including details related to low temperature conditions, reference should be made to BS5410-1, BS5410-2 and BS5410-3. 6 Ignition Means shall be provided for automatically igniting the oil spray. Ignition may b
23、e intermittent or continuous during operation. (See2.3 of Part6:1979). 7 Air supply 7.1 Means shall be provided for ensuring a regulated supply of air to the combustion chamber. All of this air shall be passed through the burner combustion air control system. 7.2 Where a fan is used it shall be resi
24、stant to erosion by air or dust. 7.3 The combustion air metering orifice shall be readily accessible for adjustment and cleaning when the oil burner is installed on the appliance. 7.4 In the case of multiport air metering orifices, no single aperture shall be less than3mm in any linear dimension and
25、 the total air inlet area shall be so disposed as to maintain a safe operating condition and acceptable burner performance. 7.5 When the burner is fitted with an automatic air shut-off damper this shall be arranged in such a way that the burner cannot attempt to light unless the damper is open. 7.6
26、Where assisted forced or induced draught or an automatic air shut-off damper is incorporated, failure of these devices shall cause the burner to shut down. 7.7 Where a forced or induced draught fan is used in addition to the burner fan, the burner shall not start until the fan motor circuits have be
27、en energized. 7.8 In the case of belt-driven fans, either centrifugal switches or air flow proving devices shall be used. 7.9 Any flue damper on an appliance shall be in accordance with the recommendations of BS5410-1, BS5410-2 and BS5410-3 as appropriate. 8 Control system for causing burner shut-do
28、wn All limiting devices shall wherever reasonably practicable be wired in series with the electrical mains supply circuit and be mounted directly on the appliance.BS799-3:1981 2 BSI 04-1999 Section 3. Materials and components 9 Materials 9.1 General requirements. This clause specifies the materials
29、from which all component parts of the oil burning equipment shall be constructed. All materials shall comply with the requirements of the appropriate British Standard or other recognized authority as regards chemical composition and mechanical properties. 9.2 Metallic materials. All component parts
30、of oil burning equipment in contact with oil shall be manufactured of materials resistant to erosion and corrosion that may occur through chemical reaction with the oil, whether hot or cold. Care shall be taken to select materials for any component to suit its duty and application. For example: a) u
31、nprotected copper and aluminium and their alloys are unsuitable for such parts as bellows, diaphragms and other relatively thin-walled parts in contact with oil or when any loss of metal could adversely affect the safety or operation of the plant; b) metals in contact with oil shall not be galvanize
32、d; unalloyed lead or zinc are unsuitable and shall not be used. All materials shall comply with the appropriate British Standard as regards chemical composition and mechanical properties. 9.3 Non-metallic materials. Non-metallic materials shall be resistant to erosion, corrosion, distortion and to c
33、ontact with oil under normal conditions of use. 9.4 Glands and spindle packings. All glands and spindle packings shall be resistant to the action of the oils that are intended to be used and manufacturers should be informed of the operating conditions for which their packing material is required. Al
34、l such packings shall make an oil-tight seal without imposing restraint on movement that could adversely affect equipment performance. 9.5 Jointing materials and compounds. Metallic jointing rings or gaskets shall be of steel or other corrosion-resisting materials. Non-metallic jointing rings or gas
35、kets shall be resistant to the action and temperature of the oils used. Pipe jointing materials shall be capable of withstanding the solvent action of the working fluid under all operating temperatures. Jointing materials containing boiled oil as commonly employed for gas and water joints shall not
36、be used. Hemp and other fibrous materials shall not be used as packing for screwed joints. NOTEThe essential features of a suitable jointing compound are that it will neither soften nor dissolve when exposed to cold or hot oil, and that it will retain a slightly plastic condition when “set”, since c
37、ompounds which dry to a brittle condition are not reliable if pipelines are subject to vibration or similar disturbances. 9.6 Pipes and pipe fittings. Pipes and pipe fittings shall be suitable for the pressure and temperatures applying and to the conditions of use as regards corrosion, erosion, vibr
38、ation, etc. The pipes and fittings shall comply with the requirements of the appropriate British Standards as set out in9.6.1. Soft-solder copper tube fittings and galvanized pipes and fittings shall not be used. 9.6.1 Steel tubes and tubulars (non-galvanized) shall comply with the requirements of B
39、S1387, medium thickness or heavy thickness; light thickness shall not be used. Steel tubes of appropriate test pressure shall comply with the requirements of BS3601 and BS3602, either welded as specified in BS2633 or flanged in accordance with BS4504. Seamless steel tubing or electric resistance wel
40、ded (ERW) tubes shall comply with the requirements of BS3601 but with outside diameter tolerances suitable for use with compression tube couplings in accordance with BS4368. Copper tube shall comply with the requirements of BS2871-1 and BS2871-2; fittings shall comply with the requirements of BS864-
41、2 or BS2051-1. Seamless copper tubes of appropriate test pressure shall comply with the requirements of BS2871-2, and fittings shall comply with the requirements of BS99 of BS66 b) in the case of types described in12.2 b) at twice the maximum working pressure or7.0bar, whichever is the greater. All wheel-operated valves shall close by clockwise rotation, and should preferably be of a type in which the open or shut position can be seen at a glance. 1) 1cSt=1mm 2 /s. 2) 1bar=10 5 N/m 2 =100kPa.
