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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 449 : 1997 Incorpor
2、ating Amendment No. 1 not published separately The European Standard EN 449 : 1996 including corrigendum July 1997 has the status of a British Standard ICS 91.140.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specification for Dedicated liquefied petroleum gas appliances
3、Domestic flueless space heaters (including diffusive catalytic combustion heaters) Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:28:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 449 : 1997Issue 2, December 1997 This British Standard, having been prepared under the direction of the
4、Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 March 1997 BSI 1997 The following BSI references relate to the work on this standard: Committee reference GSE/24 Draft for comment 91/71751 DC ISBN 0 580 26721 0 Amendments issued since pub
5、lication Amd. No.DateText affected 9833December 1997 Indicated by a sideline in the margin Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee GSE/24, Installations using neat LPG gas installations, upon which the following b
6、odies were represented: British Combustion Equipment Manufacturers Association British Gas plc Consumer Policy Committee of BSI Department of Trade and Industry (Consumer Safety Unit, CA Division) Gas Barbecue Association Institution of Fire Engineers LP Gas Association National Caravan Council Limi
7、ted Society of British Gas Industries Co-opted members Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:28:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 449 : 1997 BSI 1997i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 4494 Licensed C
8、opy: sheffieldun sheffieldun, na, Sat Nov 04 09:28:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii BSI 1997 BS EN 449 : 1997Issue 2, December 1997 | | | National foreword This British Standard has been prepared by Technical Committee GSE/24, and is the English language version of EN 449 : 1996, inc
9、luding corrigendum July 1997 published by the European Committee for Standardization (CEN). It supersedes BS 5258 : Part 10 and BS 5258 : Part 11 which are withdrawn. Compliance with a British Standard does not of itself confer immunity from legal obligations. Licensed Copy: sheffieldun sheffieldun,
10、 na, Sat Nov 04 09:28:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. 449 : 1996 E EU
11、ROPEAN STANDARDEN 449 NORME EUROPE ENNE EUROPA ISCHE NORM February 1996 ICS 21.140; 23.040.70; 91.140.20Incorporating corrigendum July 1997 Descriptors: Heaters, household appliances, gas appliances, liquefied petroleum gases, definition, classifications, characteristics, safety, tests, marking, tec
12、hnical notices English version Specification for dedicated liquefied petroleum gas appliances Domestic flueless space heaters (including diffusive catalytic combustion heaters) Spe cifications pour les appareils fonctionnant exclusivement aux gaz de pe trole lique fie s Appareils de chauffage domest
13、iques non raccorde s (y compris les appareils de chauffage a combustion catalytique diffusive) Festlegungen fu r flu ssiggasgera te Abzugslose Haushaltsraumheizer (einschlielich Heizer mit diffusiver katalytischer Verbrennung) This European Standard was approved by CEN on 1995-07-19. CEN members are
14、 bound to comply with the CEN/CENELEC 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 t
15、he Central Secretariat or to any CEN 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 sta
16、tus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, S
17、at Nov 04 09:28:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 449 : 1996 BSI 1997 Foreword This European Standard has 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 giv
18、en the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 1996, and condflicting standards shall be withdrawn at the latest by August 1996. This European Standard has been prepared under a mandate given to CEN by the European Commissi
19、on and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of
20、the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope4 2Normative refere
21、nces4 3Definitions4 4Classification6 4.1Classification of gases6 4.2Classification of appliances6 5Safety and constructional requirements7 5.1Test methods7 5.2Conversion to different gases7 5.3Materials7 5.4Cleaning and user maintenance7 5.5Strength of assembly7 5.6Soundness of the gas circuit assem
22、bly7 5.7Connections7 5.8Appliance stability, fixing and mobility devices8 5.9Taps and controls8 5.10 Control handles, knobs or pushbuttons8 5.11 Injectors8 5.12 Ignition device8 5.13 Safety devices9 5.14 Cylinder compartment9 5.15 Verification of the heat inputs9 5.16 Effect of light back9 5.17 Temp
23、erature of various parts of the appliance10 5.18 Temperature of the support, walls or adjacent surfaces10 5.19 Temperature of taps and components10 5.20 Overheating of the LPG cylinder and its compartment10 5.21 Ignition10 5.22 Crosslighting11 5.23 Flame stability11 5.24 Combustion11 5.25 Additional
24、 requirements11 6Test methods12 6.1General12 6.2Conversion to different gases14 6.3Materials14 6.4Cleaning and user maintenance14 6.5Strength of assembly14 6.6Soundness of the gas circuit assembly14 6.7Connections14 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:28:50 GMT+00:00 2006, Unco
25、ntrolled Copy, (c) BSI Page 3 EN 449 : 1996 BSI 1997 Page 6.8Appliance stability, fixing and mobility devices14 6.9Taps and controls14 6.10 Control handles, knobs or pushbuttons14 6.11 Injectors14 6.12 Ignition devices14 6.13 Safety devices15 6.14 Cylinder compartment16 6.15 Verification of heat inp
26、uts16 6.16 Effect of light back16 6.17 Temperature of various parts of the appliance17 6.18 Temperature of the support, walls and adjacent surfaces17 6.19 Temperature of taps and components17 6.20 Overheating of the LPG cylinder and its compartment17 6.21 Ignition18 6.22 Crosslighting19 6.23 Flame s
27、tability19 6.24 Combustion20 6.25 Additional requirements21 7Marking and instruction literature22 7.1Data plate22 7.2Warning label22 7.3Packaging22 7.4Instructions for use and user maintenance22 7.5Instructions for installation23 7.6Specialist servicing instructions23 Figures 1Apparatus for testing
28、soundness15 2Apparatus for measure of increase of vapour pressure18 3Stability of flames: example of an apparatus for the draught test20 4Details of probe22 A.1Nozzles27 A.2Union connector28 B.1Vitiation room29 Page Tables 1Classification of gases6 2Maximum allowable pressure increase inside the LPG
29、 cylinder10 3Test gases corresponding to the categories of appliances12 4Characteristics of the test gases13 5Test pressures13 6Test gases and pressure for ignition tests18 7Test gases and pressures for crosslighting tests19 8Test gases, pressures and conditions for combustion tests20 A.1. Normal su
30、pply pressure for appliances24 A.2. Appliance categories marketed in various countries25 A.3. Types of connection used in various countries26 Annexes A(normative) Special national conditions24 B(normative) Vitiation room29 C(informative) Air supply and ventilation30 ZA(informative) Correspondence be
31、tween this standard and EC Directive 90/396/EEC30 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:28:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 449 : 1996 BSI 1997 1 Scope This standard specifies, for the purpose of type examination, the requirements, the test methods and the
32、marking of domestic flueless space heaters, including diffusive catalytic combustion heaters, having a nominal heat input (Hs) not exceeding 4,2 kW burning 3rd family gases at nominal operating pressures not exceeding 50 mbar, referred to in the text as appliances. It covers the following types of a
33、ppliance: a)fixed heaters burning commercial butane and/or commercial propane; b)portable or mobile heaters burning either commercial butane, or commercial butane and commercial propane including those that incorporate a compartment for a transportable refillable liquefied petroleum gas cylinder. Th
34、ere are no specific thermal efficiency requirements appropriate to these types of appliance as: c)all the heat produced by the combustion process is released into the space to be heated; d)the requirements with regard to the combustion performance, which is a safety matter, ensure the effective burn
35、ing of the fuel gas. It does not cover appliances incorporating electrically operated gas control systems. Annex A gives the details of the categories of appliances marketed in various countries. Requirements for appliances given in this standard assume that the supply of gas from the container will
36、 be governed by a pressure regulator having a maximum nominal outlet pressure of 50 mbar. This standard does not cover cylinders for liquefied petroleum gas or their associated regulators. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other
37、 publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or r
38、evision. For undated references the latest edition of the publication referred to applies. EN 125Flame supervision devices for gas burning appliances Thermo-electric flame supervision devices EN 126Multifunctional controls for gas burning appliances EN 161Automatic shut-off valves for gas burners an
39、d gas appliances EN 257Mechanical thermostats for gas burning appliances EN 549Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 60335-1 : 1988 Safety of household and similar electrical appliances Part 1: General requirements ISO 7-1Pipe threads where pressure-tight
40、joints are made on the threads Part 1: Designation, dimensions and tolerances ISO 228-1Pipe threads where pressure-tight joints are not made on the threads Part 1: Designation, dimensions and tolerances ISO 274Copper tubes of circular section Dimensions 3 Definitions For the purposes of this standar
41、d the following definitions apply. 3.1 appliance incorporating a cylinder An appliance which includes a compartment for the cylinder. 3.2 auxiliary equipment Auxiliary equipment includes: tap and cocks; flame supervision devices; thermostats; multifunctional controls; automatic shut-off valves. 3.3
42、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 primary air, is entrained by the gas flow and mixed before the bur
43、ner outlet. The remainder of the air drawn in at the port, termed secondary air, is drawn in after the burner outlet. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:28:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 449 : 1996 BSI 1997 3.4 heat input The product of the volume or m
44、ass rate and the calorific value of the gas (brought to the same reference conditions). It is expressed in kW. 3.5 nominal heat input of burner The value of the heat input of a burner, as declared by the manufacturer. 3.6 volume rate The volume of gas passed in unit time. This is expressed in m3/h o
45、r in dm3/h. 3.7 mass rate The mass of gas passed in unit time. This is expressed in kg/h or g/h. 3.8 flame lift Phenomenon characterized by the partial or total movement of the base of the flame away from the burner port. 3.9 relative density (d) The ratio of the mass of a volume of dry gas to the m
46、ass of an equal volume of dry air under the same temperature and pressure conditions. 3.10 ignition device A device to ignite one or more burners directly or indirectly, for instance through a flash tube. It may be either electric (resistance, spark.), or thermal (pilot, ). 3.11 flame supervision de
47、vice A device including a sensing element which causes the gas supply to a burner to be opened or closed according to the presence or absence of the flame which activates the sensing element. 3.12 Wobbe number (Ws) This is given by the formula: Ws= Hs d where H is the gross calorific value of a gas
48、expressed in megajoules per cubic metre, and d is its relative density. 3.13 injector A component part that admits the gas into an aerated burner. There are two types of injector: calibrated injector: where the section of the outlet orifice is fixed; adjustable injector: where the section of the out
49、let orifice is variable. 3.14 sound mechanical joint A connection device assuring soundness in an assembly made up of several parts, generally of metal. It may be: a conical joint; an O-ring joint; a flat-faced joint. 3.15 tap handle A manually operated component used to open, partially open, or close a tap. 3.16 putting a control out of service A control (of temperature, pressure, etc.) is said to be put out of service if it is put out of action and sealed in this position. The appliance then functions as if this devic
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