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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 721:1999 The Europe
2、an Standard EN 721:1998 has the status of a British Standard ICS 43.040.60; 43.100 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Leisure accommodation vehicles Safety ventilation requirements Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:50:27 GMT+00:00 2006, Unc
3、ontrolled Copy, (c) BSI BS EN 721:1999 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 February 1999 BSI 02-1999 ISBN 0 580 30290 3 Ame
4、ndments issued since publication Amd. No.DateText affected National foreword This British Standard is the English language version of EN 721:1998. It supersedes BS 5601-1:1978 which is declared obsolescent. The UK participation in its preparation was entrusted to Technical Committee B/511, Buildings
5、 Mobile and temporary, which has the responsibility to: aid enquirers to understand 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 pr
6、omulgate them in the UK. A list of organizations represented on this committee 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
7、 section entitled International Standards Correspondence Index, or by using 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
8、. 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, the EN title page, pages 2 to 6, an inside back cover and a back cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 0
9、7 03:50:27 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 1998 CEN All rights of exploitation in any form and by any means reserved wor
10、ldwide for CEN national Members. Ref. No. EN 721:1998 E EUROPEAN STANDARDEN 721 NORME EUROPE ENNE EUROPA ISCHE NORM July 1998 ICS 43.040.60; 43.100 Descriptors: mobile homes, leisure facilities, caravans, ventilation, aeration, air, quality, specifications, design, tests English version Leisure acco
11、mmodation vehicles Safety ventilation requirements Ve hicules habitables de loisirs Exigences de ventilation de se curite Bewohnbare Freizeitfahrzeuge Anforderungen an die Sicherheitslu ftung This European Standard was approved by CEN on 1 July 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. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:50:27
15、 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 721:1998 BSI 02-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 245, Leisure accommodation vehicles, the Secretariat of which is held by BSI. This European Standard shall be given the status of a national stan
16、dard, either by publication of an identical text or by endorsement, at the latest by January 1999, and conflicting national standards shall be withdrawn at the latest by January 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries a
17、re bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This European Standard is based on ISO 7419, Leisure accom
18、modation vehicles Ventilation requirements. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 4Requirements3 5Minimum free area of safety ventiliation, by calculation4 6Testing4 7Users handbook5 Annex A (normative) Warning notice6 Licensed Copy: sheffieldun sheffieldun, na, Tue No
19、v 07 03:50:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 721:1998 BSI 02-1999 1 Scope This European Standard specifies the minimum safety ventilation requirements for leisure accommodation vehicles. It also provides methods of calculation and testing of safety ventilation. 2 Normative refe
20、rences This European Standard incorporates, by dated or undated reference, provisions from other 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 t
21、hese publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. EN 27418, Leisure accommodation vehicles Vocabulary. EN 1645-1, Leisure accommodation vehicles Caravans Part 1:
22、Habitation requirements relating to health and safety. EN 1646-1, Leisure accommodation vehicles Motor caravans Part 1: Habitation requirements relating to health and safety. EN 1647, Leisure accommodation vehicles Caravan holiday homes Habitation requirements relating to health and safety. 3 Defini
23、tions For the purposes of this European Standard the definitions given in EN 27418 shall apply, together with the following. 3.1 overall plan area the overall plan area is measured as follows: a) caravan: overall width multiplied by overall length excluding towbar; b) motor caravan: overall width, e
24、xcluding driving mirrors, multiplied by overall length. Where the accommodation section is demountable, the overall plan area is the overall length of the demountable section multiplied by the overall width; c) caravan holiday home: overall width multiplied by overall length excluding towbar. When a
25、 caravan holiday home comprises more than one element, the overall plan area is the sum of the areas of the separate elements before they are joined together 3.2 model a leisure accommodation vehicle is considered to be a different model from the tested model if any of the following apply: a) the ex
26、terior size and/or shape of the body is altered or in the case of a motor caravan a different base vehicle is used; b) the cooking appliances are situated more than 300 mm from, and/or have more burners than, the tested model and/or any other non room-sealed appliance is of a different type or posit
27、ion; c) any permanent ventilation opening in the external shell of the vehicle is of a different type or situated more than 300 mm from its position in the tested model and/or there is consequent obstruction of any ventilation opening; d) the internal volume of the leisure accommodation vehicle, exc
28、luding furniture, differs by more than 10 % 4 Requirements 4.1 General Each habitable compartment, excluding toilets and bathrooms, shall be provided with safety ventilation. A habitable compartment that includes a part that can be temporarily separated by a curtain shall be considered as a single c
29、ompartment. The ventilation shall permit: a) renewal of air for occupants; b) supply of combustion air for appliances that are not room sealed; and c) evacuation of the products of combustion for appliances that are not room sealed. This requirement shall be considered fulfilled if, for each model (
30、see 3.2): 1) the minimum free area of safety ventilation is provided, in accordance with clause 5; or 2) the CO2content of the air within the habitable compartments of the leisure accommodation vehicle does not rise by more than 1 % absolute above the background level, when tested in accordance with
31、 clause 6 by an accredited testing centre, and a permanent label is affixed adjacent to the cooker (see annex A). If when the vehicle is in motion the free area of ventilation is reduced, then as the vehicle becomes stationary the ventilators shall automatically return to the position in which the f
32、ree area of safety ventilation was calculated in accordance with clause 5 or tested in accordance with clause 6. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:50:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 721:1998 BSI 02-1999 4.2 Ingress of products of combustion No ventilat
33、ion opening shall be positioned within 300 mm of an opening for the extraction of products of combustion. Extractors or forced air ventilators shall be positioned so that products of combustion from a flue outlet are not drawn into the interior of the leisure accommodation vehicle. 4.3 Avoidance of
34、obstructions Ventilation openings shall be positioned so that they cannot be made ineffective by drapes, curtains or other obstructions. If the ventilation is provided to the interior through a cupboard, bed box or similar space, it shall not be possible for the passage of air to be obstructed, e.g.
35、 by items stored in these spaces. 4.4 Ventilator grilles The ventilation openings shall be protected by a grille or screen that shall be easily accessible for cleaning. 5 Minimum free area of safety ventilation, by calculation 5.1 General All screens and grilles (see 4.4) shall be accounted for when
36、 providing the minimum free area of safety ventilation. When the high level ventilation is not provided by roof vents, the minimum high level ventilation area shall be twice the values shown for roof vents in Table 1. The high level ventilation openings, which are not roof vents, shall be not less t
37、han 1 800 mm from the interior floor level of the leisure accommodation vehicle, and in no case less than 300 mm above the upper surface of the uncompressed mattress of the highest sleeping berth. Low level ventilation openings shall be not more than 100 mm above the interior floor level. 5.2 Sizes
38、of ventilation openings in the principal habitation compartment Ventilation openings in the principal habitation compartment shall conform to Table 1. If any other compartment contains a non room-sealed appliance, then the ventilation in the compartment shall also conform to Table 1. Table 1 Minimum
39、 sizes of ventilation openings in the principal habitation compartment Overall plan area of leisure accommodation vehicles Minimum high level ventilation (roof vents) Minimum low level ventilation m2mm2mm2 Up to 57 5001 000 Over 5 and up to 1010 0001 500 Over 10 and up to 1512 5002 000 Over 15 and u
40、p to 2015 0003 000 Over 2020 0005 000 5.3 Sizes of ventilation openings in other compartments (excluding 5.2) All compartments not having a non room-sealed appliance installed, excluding toilets and bathrooms, shall have a minimum of 1 500 mm2of safety ventilation installed at high level, or 3 000 m
41、m2if not by a roof vent, as well as 500 mm2at low level. 6 Testing 6.1 Preparation 6.1.1 Carry out the test in a calm atmosphere with an ambient external temperature of (205) 8C. 6.1.2 Measure the background level of CO2in the test area at a distance of 1 000 mm from the test vehicle. 6.1.3 Shut all
42、 windows, doors and manually closable ventilators and keep closed during the test period. Open separating curtains. Place berths in the sleeping position. Close adjustable ventilators to their minimum position. Hermetically seal the passage of all instrumentation services. Switch off all mechanical
43、ventilation systems. 6.2 Procedure 6.2.1 Measure the CO2level in the leisure accommodation vehicle compartments with a calibrated apparatus. Test all designated compartments concurrently. 6.2.2 If a LPG refrigerator is fitted, operate the refrigerator on LPG at its maximum setting together with any
44、other non room-sealed appliances, except grills, cookers or ovens. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:50:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 721:1998 BSI 02-1999 6.2.3 To simulate occupation of the compartments, and to introduce a safety factor to cover pos
45、sible extra occupants and extended use of an unattended cooking appliance, introduce a CO2producing burner fuelled by propane. The output of the burner shall be adjusted using the following formula: 1,2 3 (0,1 P) + (0,1 N) =output of the burner in kilowatts where P is the number of standard berths a
46、nd additional berths provided by the manufacturer in the room to be tested. For the principal habitation compartment, P is the total number of standard berths and additional berths provided in the leisure accommodation vehicle; N is the total number of burners of all grills, cookers and ovens within
47、 the room to be tested. Locate the CO2producing burner approximately 200 mm above floor level and take samples of the atmosphere approximately 200 mm below the ceiling at about the centre of the compartment, where a ventilation opening is not likely to have an undue influence, and not directly above
48、 the burner. 6.2.4 Alternatively for the use of a burner fuelled by propane, CO2can be let directly into the leisure accommodation vehicle. In this case the output in kilowatts is calculated from the formula in 6.2.3 and converted into the volume of CO2per hour in accordance with Table 2. Introduce
49、the CO2approximately 200 mm above the floor level of the vehicle. Let the thermal output calculated from the formula in 6.2.3 into the compartment, by means of one or more defined heating sources (e.g. heating appliance, incandescent lamp), near to the CO2emission point. Table 2 Conversion from kilowatts into CO2 volume Height of the testing site above sea level CO2per kilowatt of burner at 20 8C ml/h 0125 250130 500133 750137 1 000141 6.2.5 Take the first CO2sample after 20 min. Take subsequent samples at intervals of not less