1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Requirements for ductwork components to facilitate maintenance of ductwork systemsThe European Stan
2、dard EN 12097:2006 has the status of a British StandardICS ICS 91.140.30Ventilation for buildings Ductwork BRITISH STANDARDBS EN 12097:2006BS EN 12097:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2006 BSI 2006ISBN 0 580 495
3、28 0Amendments issued since publicationAmd. No. Date Commentscontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of EN 120
4、97:2006. It supersedes DD ENV 12097:1997 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/2, Ventilation for buildings, heating and hot water services.A list of organizations represented on RHE/2 can be obtained on request to its secretary.This publ
5、ication does not purport to include all the necessary provisions of a EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12097September 2006ICS 91.140.30 Supersedes ENV 12097:1997 English VersionVentilation for Buildings - Ductwork - Requirements for ductworkcomponents to facilitate maintenance of du
6、ctwork systemsVentilation des btiments - Rseau de conduits - Exigencesrelatives aux composants destins faciliter lentretien desrseaux de conduitsLftung von Gebuden - Luftleitungen - Anforderungen anLuftleitungsbauteile zur Wartung von LuftleitungssystemenThis European Standard was approved by CEN on
7、 1 August 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be
8、obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Se
9、cretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
10、tugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means r
11、eservedworldwide for CEN national Members.Ref. No. EN 12097:2006: EEN 12097:2006 (E) 2 Contents Page Foreword. 3 1 Scope 4 2 Normative references . 4 3 Definition and symbols. 5 4 Requirements 5 4.1 General. 5 4.2 Openings 5 4.2.1 General. 5 4.2.2 Installation and location of openings . 6 4.2.3 Dime
12、nsions 6 4.3 Duct-mounted components . 8 4.4 Location and frequency of access panels 9 4.5 Screws and rivets 9 Annex A (informative) Service and access recommendations 10 Bibliography . 11 EN 12097:2006 (E) 3 Foreword This document (EN 12097:2006) has been prepared by Technical Committee CEN/TC 156
13、“Ventilation for buildings”, the secretariat of which is held by BSI. 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 March 2007, and conflicting national standards shall be withdrawn at the lates
14、t by March 2007. This document supersedes ENV 12097:1997 The standard is one of a series of standards for ductwork used for ventilation and air conditioning of buildings for human occupancy. The position of this standard in the field of mechanical services is shown in Figure N 1. Figure 1 Position o
15、f EN 12097 in the field of mechanical building services According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germa
16、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 12097:2006 (E) 4 1 Scope This European standard specifies requirements for dimension, shape and lo
17、cation for access panels for cleaning and service in ductwork systems, which conform to EN 1505, EN 1506 and EN 13180. National regulations shall always be followed, even when they deviate from requirements given in this standard. 2 Normative references The following referenced documents are indispe
18、nsable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1506, Ventilation for buildings Sheet metal air ducts and fittings with circular cross-secti
19、on Dimensions EN 1507, Ventilation for buildings Sheet metal air ducts with rectangular section Requirements for strength and leakage EN 12236, Ventilation for buildings Ductwork hangers and supports Requirements for strength EN 12237, Ventilation for buildings Ductwork Strength and leakage of circu
20、lar sheet metal ducts EN 12792:2003, Ventilation for buildings Symbols, terminology and graphical symbols EN 13180, Ventilation for buildings Ductwork Dimensions and mechanical requirements for flexible ducts EN 13779, Ventilation for non-residential buildings Performance requirements for ventilatio
21、n and room-conditioning systems EN 12097:2006 (E) 5 3 Definition and symbols For the purposes of this document the terms definitions given in EN 12792:2003 and the following apply. 3.1 Access panel permanent duct component intended to permit access into ducts for inspection and maintenance. An acces
22、s panel according to this standard can be opened and closed repeatedly, without cutting or damaging the duct. Refer to “Door and inspection panel” in EN 12792 4 Requirements 4.1 General The air distribution system shall be designed, manufactured and installed in such a way that cleaning of internal
23、surfaces and components is possible. The design and installation documentation shall indicate by dimensions, the location of all access components and provide details of the size and type of component required. The documentation shall also indicate the location of the components mentioned in 4.3 to
24、enable proper service and re-adjustment. The cleaning method may vary depending on the category of the air distribution system. The arrangements for cleaning depend on the category of air system, as specified in EN 13779. This category influences the frequency of access covers, the method for cleani
25、ng and the cleaning intervals. All equipment or components inside the ductwork that inhibits cleaning shall be avoided. Stiffeners, or other equipment necessary inside the ducts shall be smooth. Sufficient free space shall be provided around the ductwork so that cleaning operations can be carried ou
26、t without obstruction. The requirements for the strength and air tightness of ducts equipped with access components shall conform to those for the whole ductwork, as specified in EN 12237 and in EN 1507. The requirements for strength of ductwork hangers and supports shall conform to EN 12236. For du
27、ctwork in dimensions unsuited for mechanized cleaning and where human access is needed, the type and location of access components shall allow the cleaning person to safely and without hindrance enter and exit from the ducts. 4.2 Openings 4.2.1 General Covers, access panels and doors shall be easy t
28、o open. All access components shall be constructed and installed to match the performance, including air tightness and strength, of the system and facilitate the cleaning process. In ductwork where thermal, acoustic or fire insulation is specified, the design documentation shall define how the insul
29、ation value is maintained across the opening. Access components shall be constructed and installed in the ductwork such that the integrity of the thermal, acoustic or fire insulation is maintained. EN 12097:2006 (E) 6 A duct-mounted component, which may be dismounted for cleaning may also be regarde
30、d as an opening, provided it fulfils the requirements stated for openings. 4.2.2 Installation and location of openings Consideration shall be given to the security of access panels and doors installed in public areas. Detachable access panels and doors shall be secured to prevent them from causing i
31、njury or falling into the duct. Access components shall be provided to ensure that the whole ductwork system can be cleaned (see 4.4). Unobstructed access to the access panels of the ducts shall be provided. See annex A. 4.2.3 Dimensions 4.2.3.1 General Unless cleaning conditions are specified in te
32、chnical agreement, the dimensions shall conform to 4.2.3.2 and 4.2.3.4. Openings could reduce the stability of ducts. This should be prevented by an adequate fixing. 4.2.3.2 Openings for rigid circular ducts For cleaning access, the ducts shall be provided either with openings of sizes according to
33、Table 1 and Figure 2 or T-pieces with removable end caps with a minimum nominal diameter (EN 1506) according to Table 1 and Figure 2. Table 1 Access panels in circular ducts, minimum dimensions Rectangular or oval opening Branch/T-piece + end cap with minimum diameter Duct diameter nominal (mm) D Mi
34、nimum dimensions of openings in duct walls (mm) A x B Duct diameter, nominal (mm) D a)Nominal EN 1506 male dimension or minimum opening (mm) d 100 D 630 500 EN 12097:2006 (E) 8 dSABFigure 3 Openings for rectangular ducts 4.2.3.5 Openings for flatoval ducts For access panels fitted to the semi-circul
35、ar side 4.2.3.2 (Openings for rigid circular ducts) applies. For access panels fitted to the flat side 4.2.3.4 (Openings for rectangular ducts) applies. 4.3 Duct-mounted components For duct-mounted components that cannot be cleaned through without obstruction, access according to 4.4 shall be provid
36、ed from both sides, or it shall be possible to remove the component for maintence. Examples of such components are: adjustment and shut-off dampers; fire dampers; heating and cooling coils; humidifiers; sound attenuators with internal pods or baffles; filter sections; in-duct fans; heat recovery dev
37、ices; air flow control devices; air turning vane. NOTE If a component is to be removed for service, the service instructions shall include sufficient guidance for the checking its function. Airflow direction shall be labelled on all these components and they shall be installed in such a way, that th
38、e intended removal, servicing or inspection is possible. If re-setting of equipment, e.g. fire damper or controller, inside a duct is required, the access panel shall be located to allow the necessary work and inspection. EN 12097:2006 (E) 9 4.4 Location and frequency of access panels The ductwork s
39、hall be equipped with sufficient access panels in order to ensure that no part of the ductwork is located with more than: a) one dimensional change from an access panel; b) one change of direction of more that 45 from an access panel; c) 7,5 meters of duct from an access panel. NOTE The top and bott
40、om of vertical risers should be equipped access panels. Flexible ductwork shall be complemented with rigid access components at a minimum of every 6 m. 4.5 Screws and rivets It is accepted that screws or preferably rivets used during installation intrude into the ductwork, provided that they do not
41、obstruct cleaning and maintenance. Screws of maximum length 13 mm may be used. Sharp pointed screws shall not be used nearby openings where they can cause injury to persons. They are therefore not to be used within a distance of 1 m from terminal devices or access panels. When mounting access panels
42、 in old ductwork, existing screws within 1 m from the access opening shall be replaced with rivets. EN 12097:2006 (E) 10 Annex A (informative) Service and access recommendations An example of access to service openings is given in Figure A.1. Care should be taken to avoid that access panels later ar
43、e found to be inaccessible. Special consideration should be given to the practical problems associated with gaining personnel access to heavily congested ceiling areas and multi-layered ductwork systems. AFigure A.1 Service openings in suspended ceilings EN 12097:2006 (E) 11 Bibliography 1 Cleanline
44、ss of Ventilation Systems, Guide to good practice. TR/17. Heating and Ventilating Contractors Association. London, UK. 2 Pasanen P. et al. Clean ventilation systems. REHVA guidebook (in preparation) 3 VDI 6022 (1998). Hygienic standards for ventilation and conditioning systems, Office and assembly r
45、ooms. VDI 6022. Part 1. 44 p. 4 VDI 6022 (1999). Hygienic standards for ventilation and conditioning systems, Standards for hygiene training. VDI 6022. Part 2. 7 p. 5 VDI 6022 (2002). Hygienic standards for ventilation and conditioning systems in production facilities and business enterprises. VDI 6
46、022. Part 3. 55 p. 6 EN 1505, Ventilation for buildings - Sheet metal air ducts and fittings with rectangular cross section - Dimensions BS EN BSI389 Chiswick High RoadLondonW4 4AL12097:2006BSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standa
47、rds. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions.It is the constant
48、aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +4
49、4 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.Buying standardsOrders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.
