BS EN 732-1999 Specifications for dedicated liquefied petroleum gas appliances - Absorption refrigerators《专用液化石油气的器具规范 吸收式制冷》.pdf

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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 732:1999 The Europe

2、an Standard EN 732:1998 has the status of a British Standard ICS 97.040.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specifications for dedicated liquefied petroleum gas appliances Absorption refrigeratorsThis British Standard, having been prepared under the direction of

3、 the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 1999 BSI 05-1999 ISBN 0 580 30756 5 BS EN 732:1999 Amendments issued since publication Amd. No. Date Text affected National foreword This British Standard is the English la

4、nguage version of EN 732:1998. It supersedes BS 5258-6:1988 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee GSE/24, Dedicated LPG appliances, to Subcommittee GSE/24/-5, Refrigerating appliances, which has the responsibility to: aid enquirers to unders

5、tand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommitt

6、ee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by usin

7、g the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include 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

8、from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 24, an inside back cover and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secre

9、tariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 732:1998 E EUROPEAN STANDARD EN 732 NORME EUROPE ENNE EUROPA ISCHE NORM November 1998 ICS 97.040.30 Descriptors: household refrigerato

10、rs, absorption refrigerators, gas appliances, liquefied petroleum gases, commercial butane, commercial propane, equipment specification, performance evaluation, safety, tests, marking, name plates, technical notices English version Specifications for dedicated liquefied petroleum gas appliances Abso

11、rption refrigerators Spe cifications pour les appareils fonctionnant exclusivement aux gaz de pe trole lique fie s Re frige rateurs a absorption Festlegungen fu r Flu ssiggasgera te Absorber-Ku hlschra nke This was approved by CEN on 16 October 1998. CEN members are bound to comply with the CEN/CENE

12、LEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any C

13、EN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN

14、members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 732:1998 BSI 05-1999 Foreword This European Standard h

15、as been prepared by Technical Committee CEN/TC 181, Dedicated liquefied petroleum gas appliances, the Secretariat of which is held by NSAI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 1999

16、, and conflicting national standards shall be withdrawn at the latest by May 1999. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with E

17、U Directive(s), see informative annex ZA, which is an integral part of this standard. This European Standard applies only to type testing. Items relating to quality assurance systems, production testing and particularly certificates of conformity of auxiliary equipment are not covered by this Europe

18、an Standard. Particular attention should be paid to the suitability of non-metallic materials used in the construction of these appliances. A European Standard specifying “Requirements for rubber materials for seals and diaphragms for gas appliances and equipment” has been prepared by CEN/TC 108 (EN

19、 549). A European Standard for “Flexible hose, tubing and assembles for use with butane or propane in the vapour phase” is being prepared by CEN/TC 218. These standards will be applicable to these types of appliances. This European Standard does not deal with the refrigeration aspects of the applian

20、ce and contains no specific requirements or tests for this. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, I

21、celand, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 4 2 Normative references 4 3 Definitions 4 4 Classification 6 4.1 Classification of gases 6 4.2 Classification of appliances 6 5 Constructional and s

22、afety characteristics 6 5.1 Test methods 6 5.2 Conversion to different gases 6 5.3 Materials 6 5.4 Cleaning and maintenance 7 5.5 Strength of the appliance 7 5.6 Soundness of the gas circuit assembly 7 5.7 Connections 7 5.8 Fixing the appliance 7 5.9 Taps and controls 7 5.10 Control handles 8 5.11 I

23、njectors and by-pass screws 8 5.12 Ignition device 8 5.13 Flame supervision device 8 5.14 Appliance incorporating a gas container 8 5.15 Verification of the nominal and minimum input 9 5.16 Resistance to overheating 9 5.17 Temperature of various parts of the appliance 9 5.18 Temperature of the suppo

24、rt, walls or adjacent surfaces 9 5.19 Temperature of auxiliary equipment 9 5.20 Overheating/temperature of the LPG cylinder and, if applicable, its compartment 9 5.21 Ignition and cross-lighting of the burner 9 5.22 Flame stability 10 5.23 Combustion 10 5.24 Electrical safety 10Page 3 EN 732:1998 BS

25、I 05-1999 Page 6 Test methods 10 6.1 General 10 6.2 Conversion to different gases 11 6.3 Materials 11 6.4 Cleaning and maintenance 11 6.5 Strength of the appliance 11 6.6 Soundness of the gas circuit assembly 11 6.7 Connections 11 6.8 Fixing devices 11 6.9 Taps and controls 11 6.10 Control handles 1

26、1 6.11 Injectors and by-pass screws 11 6.12 Ignition devices 11 6.13 Flame supervision devices 11 6.14 Cylinder compartment 11 6.15 Verification of the input of the burner 13 6.16 Resistance to overheating 14 6.17 Temperature of various parts of the appliance 14 6.18 Temperature of support, walls an

27、d adjacent surfaces 14 6.19 Temperature of auxiliary equipment 14 6.20 Overheating/temperature of the LPG cylinder and, if applicable, its compartment 14 6.21 Ignition and cross-lighting of the burner 14 6.22 Flame stability 16 6.23 Combustion 16 6.24 Electrical safety 16 7 Marking and instructions

28、19 7.1 Appliance marking 19 7.2 Instructions for assembly, use and maintenance 19 7.3 Packaging marking 19 Annex A (informative) National situations 20 A.1 Categories given in the body of the standard marketed in the different countries 20 A.2 Connection requirements in force in various countries 20

29、 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives 23Page 4 EN 732:1998 BSI 05-1999 1 Scope This standard defines the constructional features, safety and operational requirements, test techniques and marking of absorption

30、refrigerators using commercial butane and propane (referred to within the text as “appliances”). This standard is applicable to room sealed (type C 11 ) and flueless (type A 11 ), as defined in CR 1749, refrigerators using gas equipment fuelled by third family gases as classified in 4.2. This standa

31、rd only applies to type testing. The gas consumption of absorption refrigerators is of the same order of magnitude as pilots currently used on other types of burners, maximum being 60 g/h. Consequently efficiency measurement is not considered relevant for these appliances and is not covered by this

32、standard. This standard does not cover the requirements for LPG gas containers and their associated regulators. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places

33、 in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of their publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referre

34、d to applies. EN 88, Pressure governors for gas appliances for inlet pressures up to 200 mbar. EN 125, Flame supervision devices for gas burning appliances Thermo-electric flame supervision devices. EN 126, Multifunctional controls for gas burning appliances. EN 161, Automatic shut-off valves for ga

35、s burners and gas appliances. EN 257, Mechanical thermostats for gas burning appliances. EN 298, Automatic gas burner control systems for gas burners and gas burning appliances with or without fans. EN 437, Test gases Test pressures Appliances categories. EN 60335-1, Safety of household and similar

36、electrical appliances Part 1: General requirements. EN 60335-2-24, Safety of household and similar electrical appliances Part 2: Particular requirements for refrigerators, food-freezers and ice makers. EN 60730-2-1, Automatic electrical controls for household and similar use Part 2: Particular requi

37、rements for electrical controls for electrical household appliances. EN 60730-2-9, Automatic electrical controls for household and similar use Part 2: Particular requirements for temperature sensing controls. ISO 71, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions

38、, tolerances and designation. ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation. ISO 274, Copper tubes of circular section Dimensions. CR 1749, European scheme for the classification of gas appliances according to the metho

39、d of evacuation of the products of combustion (types). 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 auxiliary equipment all controls and devices that can affect the safety of operation of a gas appliance, for example: taps; flame supervision devices; thermost

40、ats 3.2 appearance of yellow tips phenomenon characterized by the appearance of yellow colouration at the top of the blue cone on aerated flames 3.3 built-in-appliance appliance which is intended for fitting into a cupboard or a kitchen unit in a space cut into a panel or similar. Because of this th

41、e appliance does not necessarily have a casing on all sides 3.4 burner component that allows the gas to burn. It may be one of two types: non aerated burner, in which the air for combustion is entrained entirely at the burner outlet; aerated burner, in which part of the air for combustion, termed pr

42、imary air, is entrained by the gas flow and mixed before the burner outlet. The remainder of the air, termed secondary air, is drawn in after the burner outlet 3.5 calorific value quantity of heat produced by complete combustion at a constant pressure equal to 1 013,25 mbar, of unit volume or mass o

43、f the gas, the components of the fuel mixture being at 158C, 1 013,25 mbar, and the products of combustion being brought to the same conditionsPage 5 EN 732:1998 BSI 05-1999 There are two calorific values: the gross calorific value (symbol H s ): the water produced by combustion is assumed to be con

44、densed; the net calorific value (symbol H i ): the water produced by combustion is assumed to be retained in the vapour state. For the purposes of this standard only the gross calorific value is used. The calorific values are expressed in units of energy referred: either to the unit volume of dry ga

45、s measured under normal reference conditions: 158C, 1 013,25 mbar. It is expressed in megajoules per cubic metre (MJ/m 3 ); or to the unit mass of dry gas. It is then expressed in megajoules per kilogram (MJ/kg). 3.6 control handle component intended for manual use to control the opening and closing

46、, totally or partially, of a valve 3.7 detachable that which can be dismantled without using a tool 3.8 feed piping piping intended for distribution of gas to the burner 3.9 flame lift phenomenon characterized by the partial or total movement of the base of the flame away from the burner port 3.10 f

47、lame supervision device device which, under the influence of the flame on the sensing element, keeps open the gas flow to the burner and which cuts off at least the gas supply to the burner in case of extinction of the supervised flame 3.11 gas rate adjuster device allowing gas rate to a burner to b

48、e set at a predetermined value according to the supply conditions. The adjustment can be continuous (adjustment screw) or discontinuous (changing the calibrated orifices, ). The operation of changing the setting of this device is termed the “adjustment of the gas rate” 3.12 gas supply pressure diffe

49、rence between the static pressure measured at the gas inlet to the appliance and the atmospheric pressure 3.13 heat input product of the volume or mass rate and the calorific value of the gas, brought to the same reference conditions. It is expressed in kilowatts (kW), symbol: Q. For the purposes of this standard, only the heat input calculated from the gross calorific value is considered (see 3.5) 3.14 ignition device device to ignite a burner directly. It may be: either electric (resistance, sp