1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 15780:2011Ventilation for buildings Ductwork Cleanliness ofventilation systemsBS EN 15780:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementati
2、on of EN 15780:2011.The UK participation in its preparation was entrusted to TechnicalCommittee RHE/2, Ventilation for buildings, heating and hot waterservices.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to includ
3、e all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 74008 4ICS 91.140.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and
4、 Strategy Committee on 30 November 2011.Amendments issued since publicationDate Text affectedBS EN 15780:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15780 October 2011 ICS 91.140.30 English Version Ventilation for buildings - Ductwork - Cleanliness of ventilation systems Ventilation des
5、 btiments - Rseaux de conduits - Propret des systmes de ventilation Lftung von Gebuden - Luftleitungen - Sauberkeit von Lftungsanlagen This European Standard was approved by CEN on 11 September 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condit
6、ions 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists
7、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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standa
8、rds bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and Un
9、ited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15780:2011
10、: EBS EN 15780:2011EN 15780:2011 (E) 2 Contents Page Foreword . 41 Scope 52 Normative references . 63 Terms and definitions . 64 Symbols and units 75 Criteria for cleanliness and assessment 75.1 General . 75.2 Assessment of the need for cleaning . 75.3 Design and handing over information 85.4 Determ
11、ination of cleaning interval 85.5 Assessment of the result of cleaning . 86 Methodology 86.1 General methodology . 86.2 Assessment of the need for cleaning . 106.2.1 General . 106.2.2 Inspection plan 106.2.3 Evaluation methods of dust accumulation. 116.3 Cleaning plan . 116.4 Cleaning methods . 127
12、Evaluation and reporting 127.1 Evaluation of cleaning 127.2 Cleaning report 12Annex A (informative) Cleanliness quality classes 14A.1 General . 14A.2 Application in general. 14A.3 Assessment frequency recommendation. 14A.4 Cleanliness class quality measurements . 15A.5 Unacceptable fouling Extract .
13、 15A.6 Acceptable dust accumulation level (new ductwork) . 16A.7 Acceptable post-clean level . 16Annex B (informative) Example of cleaning plan . 17Annex C (informative) Air Handling Units specific guidance . 20C.1 General . 20C.2 Recommendations for all cleanliness quality classes 20C.2.1 Casing, i
14、ncluding accessibility/access doors . 20C.2.2 Filters 21C.2.3 Humidifiers 21C.2.4 Coils 21C.2.5 Sound attenuators 21C.2.6 Fan position and cleaning, including fan motors 21C.2.7 Drainage and prevention of condensation . 21C.3 Units for advanced cleanliness quality class 21C.4 Inspection aspects 22An
15、nex D (informative) Filters Specific guidance 23Annex E (informative) Humidifiers Specific guidance . 24BS EN 15780:2011EN 15780:2011 (E) 3 Annex F (informative) Ductwork Specific installation guidance 25F.1 Acceptable dust accumulation (new ductwork) 25F.2 Protection, Delivery and Installation (PDI
16、) . 25F.3 Application of cleanliness levels - airtightness . 27Annex G (informative) Terminal devices and units Specific guidance 28Annex H (informative) Measurement methods for dust accumulation . 29H.1 Evaluation methods of dust accumulation. 29H.1.1 General . 29H.1.2 Visual inspection . 29H.1.3 M
17、ethods of verifying deposited solid dust and micro-organisms . 30H.2 Summary of methods for evaluation of cleanliness 31Annex I (informative) Preferred vacuum test method 32I.1 Test equipment 32I.2 Sampling procedure . 32I.3 Analysis procedure . 33Bibliography . 34BS EN 15780:2011EN 15780:2011 (E) 4
18、 Foreword This document (EN 15780:2011) has been prepared by Technical Committee CEN/TC 156 “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
19、the latest by April 2012, and conflicting national standards shall be withdrawn at the latest by April 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or a
20、ll such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hu
21、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 15780:2011EN 15780:2011 (E) 5 1 Scope This European Standard applies to both new and existing ventilation
22、 and air conditioning systems and specifies the assessment criteria of cleanliness, cleaning procedures of these systems, and the validation of the effectiveness of cleaning applies also to products, which conform to EN 1505, EN 1506, EN 13053, EN 13180 and EN 13403, used in air conditioning and ven
23、tilation systems for human occupancy defined in the scope of CEN/TC 156. This European Standard does not apply to installations for industrial processes. Cleanliness of ventilation systems is considered important for human comfort and health, energy consumption, system service life and for cleanline
24、ss of operations or processes carried out in the ventilated area. Considerations for change of component as an alternative for cleaning (e.g. in case of flexible ducts and air filters) are also included. This European Standard specifies general requirements and procedures necessary in assessing and
25、maintaining the cleanliness of ducted ventilation, including: cleanliness quality classification; how to assess the need for cleaning (visual, measurements); assessment frequency (general guidance); guidance of system inspections in accordance with EN 15239, and EN 15240 when relevant; selection of
26、cleaning method to be in line with handing over documentation according to EN 12599; how to assess the result of cleaning. This European Standard is a parallel standard to EN 12097, which specifies requirements for dimension, shape and location for access panels for cleaning and service in ductwork
27、systems. This European Standard is made as an umbrella standard with informative annexes that can be revised, completed and further added in future revisions of this European Standard for specific system types, and products or applications in the system, such as: Air Handling Units (AHU); filter; hu
28、midifiers; heat recovery units; decentralised air treatment units such as fan-coil units, induction units; terminal devices; kitchen extract equipment. The main target groups of this European Standard are specifiers of the cleanliness quality classes and cleaning methods primarily system designers w
29、ho also specify the system of access, building owners, services companies, maintenance companies, end users and consultancy and control companies. BS EN 15780:2011EN 15780:2011 (E) 6 2 Normative references The following referenced documents are indispensable for the application of this document. For
30、 dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12599, Ventilation for buildings Test procedures and measuring methods for handing over installed ventilation and air conditioning systems E
31、N 12792:2003, Ventilation for buildings Symbols, terminology and graphical symbols EN 14799:2007, Air filters for general air cleaning Terminology 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12792:2003 and EN 14799:2007 and the following apply. 3.
32、1 acceptable cleanliness level amount of dust or other impurities not to be exceeded, according to the specified measurement method 3.2 acceptable post-clean level no loose dust is detected visually on the duct surface after cleaning and the system is capable reaching an acceptable cleanliness level
33、 according to a defined measurement method NOTE In case of conflict (e.g. between the building owner and the user), or uncertainty objective methods are needed to assess the cleanliness/dirtiness. 3.3 acceptable dust accumulation level (new ductwork) acceptable cleanliness level on new ductwork as h
34、anded over from builder to user NOTE In practice this means the quantity of pollution which is deemed acceptable. 3.4 cleanliness state or level of pollution defined as acceptable according to specification and a particular measurement method NOTE Cleanliness is not absolute, it is defined by limit
35、values. Dirtiness is the exceeding of such a defined limit value. 3.5 cleanliness quality class in the scope of this standard there are three levels of cleanliness quality standards to be applied to various buildings and types of system A. Low B. Medium C. High BS EN 15780:2011EN 15780:2011 (E) 7 3.
36、6 visual inspection subjective method to evaluate cleanliness level of surfaces 4 Symbols and units For the purpose of this document, the symbols and units given in EN 12792:2003 apply. 5 Criteria for cleanliness and assessment 5.1 General The key issue is to design, build and maintain the whole ven
37、tilation system so that it can be kept clean enough during the whole lifetime of the installation. The following requirements, as well as the methodology described in Clause 5, applies to the ductwork but can be also applied to air handling units (according to EN 13053) and entire systems (see EN 13
38、779:2007, Annex A) Therefore it is necessary to specify the cleanliness quality class from the beginning and include in the specification both design and installation issues and means to maintain a sufficiently clean ventilation system for its whole lifetime. The design and installation issues shall
39、 include (as a minimum): cleanliness quality class; cleanliness criteria and measurement method; production of the system components; delivery to site; site storage; installation; protection of components after installation; handing over the system according to EN 12599 NOTE Annex A presents, as a c
40、ommon classification, three classes of cleanliness, application examples for ductwork, and recommendations for the frequency of regular inspections in accordance with EN 15239. 5.2 Assessment of the need for cleaning Inspection of functionality and cleanliness of ventilation system is a part of prop
41、er maintenance of the ventilation systems. Mostly the inspection of the cleanliness may arise from two purposes: to check if ventilation system is dirty and needs to be cleaned (exceeding of a “target level“ of cleanliness); to evaluate cleanliness after the cleaning work (to check cleaning work). T
42、he assessment methodology is presented in 6.2. For existing buildings, the inspection shall include a study of the existing documentation and recommendations to complete and update the documents. BS EN 15780:2011EN 15780:2011 (E) 8 5.3 Design and handing over information In the handing-over document
43、s the cleanliness quality class, cleanliness criteria and measurement methods shall be specified, recommendations for cleaning methods and guidelines for reaching the points to be cleaned shall also be given. The design information shall give consideration to the expected cleaning method. Where the
44、system has been designed to be cleaned by wet cleaning methods, warning regarding conditions and restrictions of use should be given. For example wet methods are applicable only where ducts are sufficiently moisture-tight, internal surfaces are smooth, and slope and drainage arrangements have been p
45、rovided so that fluid and contaminant can be evacuated. A sufficient number of access doors shall be provided in the ductwork. Additionally special care shall be taken regarding obstacles to cleaning such as dampers, sound attenuators etc., which are mounted in the ducts. In many cases additional ac
46、cess doors are needed after or before such obstacle, which then can be cleaned carefully. Requirements for location of and distance between access doors are presented in EN 12097 and EN 13779. 5.4 Determination of cleaning interval The cleaning interval shall in principle be defined by reference to
47、the cleanliness or dirtiness of the system. Cleanliness or dirtiness shall in the first instance be assessed visually and this may be confirmed by means of measurement see Annex A. The inspection interval to determine the need for cleaning may be defined in the system documentation in order to assis
48、t with maintenance planning or design considerations related to cleaning methods. NOTE Further guidance can be found from REHVA and EVHA Guidelines and also from national guidelines, e.g. VDI 6022 or HVCA TR19. 5.5 Assessment of the result of cleaning Methods for assessment of the need for cleaning can be also applied for assessment of the result of cleaning. The preferred method of post-clean verification is given in Annex A. See also 7.1. 6 Methodology 6.1 General methodology Figure 1 presents a procedure to control and maintain cleanliness of ventilation system. It does not in
