1、BS EN 1886:2007ICS 91.140.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDVentilation forbuildings Airhandling units MechanicalperformanceIncorporating January 2009Corrigendum Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolle
2、d Copy, (c) BSIThis British Standardwas published underthe authority of theStandards Policy andStrategy Committee on 30September 2008 BSI 2008ISBN 978 0 580 Amendments/corrigenda issued since publicationDate CommentsBS EN 1886:2007National forewordThis British Standard is the UK implementation of EN
3、 1886:2007. Itsupersedes BS EN 1886:1998 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee RHE/2, Ventilation for buildings, heating and hot waterservices.A list of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 be obtained onrequest to its secretary.Thi
4、s publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.31 January 2009 Correction to poor quality figures65986 7Licensed Copy: Wang Bin, ISO
5、/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1886:2007EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1886December 2007ICS 91.140.30 Supersedes EN 1886:1998 English VersionVentilation for buildings - Air handling units - MechanicalperformanceVentilation des btiments
6、 - Caissons de traitement dair -Performances mcaniquesLftung von Gebuden - Zentrale raumlufttechnischeGerte - Mechanische Eigenschaften und MessverfahrenThis European Standard was approved by CEN on 26 July 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulat
7、e 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 obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists
8、 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies
9、 of Austria, Belgium, Bulgaria, 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 United Kingdom.EUROPEAN
10、 COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1886:2007: ELicensed Copy: Wang Bin
11、, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1886:2007EN 1886:2007 (E) 2 Contents Page Foreword. 4 Introduction. 6 1 Scope 7 2 Normative references . 7 3 Terms and definitions. 8 4 Usage of real units and/or model boxes for the verification of mechanical performa
12、nces 8 5 Mechanical strength of casing 9 5.1 Requirements and classification. 9 5.2 Testing 12 6 Casing air leakage. 13 6.1 Requirements and classification. 13 6.1.1 Units operating under negative pressure only 13 6.1.2 Units operating under both negative and positive pressure 14 6.2 Testing 14 6.2.
13、1 Test apparatus. 14 6.2.2 Preparation for test 15 6.3 Test procedure 16 6.4 Determination of allowable leakage rates 16 7 Filter bypass leakage 16 7.1 Requirements 16 7.1.1 General. 16 7.1.2 Acceptable filter bypass leakage rates. 16 7.1.3 Two or more filter sections in the same unit . 17 7.2 Testi
14、ng 17 7.2.1 General. 17 7.2.2 Filters downstream of the fan (positive pressure) 19 7.2.3 Filters upstream of the fan (negative pressure) 21 8 Thermal performance of casing 23 8.1 General. 23 8.2 Requirements and classification. 23 8.2.1 Thermal transmittance 23 8.2.2 Thermal bridging. 24 8.3 Testing
15、 25 8.3.1 General. 25 8.3.2 Test facility 25 8.3.3 Testing procedure. 27 8.3.4 Evaluation of the test results. 28 9 Acoustic insulation of casing 28 9.1 General. 28 9.2 Test requirements . 28 9.3 Test method. 28 9.4 Test procedure 29 9.5 Evaluation of the sound insertion loss Dp29 10 Fire protection
16、 . 30 10.1 General. 30 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1886:2007EN 1886:2007 (E) 3 10.2 Material. 30 10.3 Sealings for air handling units 30 10.4 Locally limited and small construction parts of air handling units . 31 10.5 Air
17、heaters . 31 10.6 Filters, contact humidifiers and droplet eliminators of AHUs. 31 10.7 Heat recovery 31 11 Mechanical safety . 31 Annex A (informative) Arrangement and requirements for circulating fans . 33 Bibliography . 35 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, U
18、ncontrolled Copy, (c) BSIBS EN 1886:2007EN 1886:2007 (E) 4 Foreword This document (EN 1886:2007) 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 b
19、y publication of an identical text or by endorsement, at the latest by June 2008, and conflicting national standards shall be withdrawn at the latest by June 2008. This document supersedes EN 1886:1998. The standard is a part of a series of standards for air handling units used for ventilation and a
20、ir conditioning of buildings for human occupancy. It considers the mechanical performance of an air handling unit as a whole and will be supported by a standard for sections and components. The position of this standard in the whole field of standards for mechanical building services is illustrated
21、in figure 1. 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, Germany, Greece, Hungary, Iceland, Ireland, Ital
22、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1886:2007EN 1886:2007 (E) 5 Figure 1 Po
23、sition of this standard in the field of mechanical building services Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1886:2007EN 1886:2007 (E) 6 Introduction This standard specifies the mechanical performance of an air handling unit as a whole
24、 to be utilised by all involved in ventilation and air conditioning manufacturing, design, installation and maintenance. The functions and characteristics of the individual sections of the unit will be considered in another series of standards covering air handling units. Because of different requir
25、ements due to climatic conditions and building traditions in different parts of Europe, and to the specific features of individual applications, most of the requirements are given in the form of classes, which may be specified to be used in certain regions, or separately for individual applications.
26、 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1886:2007EN 1886:2007 (E) 7 1 Scope This standard specifies test methods, test requirements and classifications for air handling units, which are supplying and/or extracting air via a ductwork v
27、entilating/conditioning a part or the whole of the building. This standard is not applicable to the following: a) air conditioning units serving a limited area in a building, such as fan coil units; b) units for residential buildings; c) units producing ventilation air mainly for a manufacturing pro
28、cess. Except for the thermal and acoustic performance of the casing, the test methods and requirements are applicable to both complete units and any separate sections. The filter bypass test is not applicable to the testing of high efficiency particulate air filters (HEPA). NOTE HEPA filters are rec
29、ommended to be installed downstream of the air handling unit. Such installations should be leak tested in accordance with the appropriate filter standards. The test method for the thermal performance of the casing is applicable to the comparison of different constructions, but not to the calculation
30、 of thermal losses through casing or the risk of condensation. Similarly, the test method for the acoustic performance of the casing is applicable to the comparison of different constructions, but not to the provision of accurate acoustic data for specific units. 2 Normative references The following
31、 referenced documents are indispensable 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 779, Particulate air filters for general ventilation Determ
32、ination of the filtration performance EN 1507, Ventilation for buildings Sheet metal air ducts with rectangular section Requirements for strength and leakage EN 12237, Ventilation for buildings Ductwork Strength and leakage of circular sheet metal ducts EN 12792:2003, Ventilation for buildings Symbo
33、ls, terminology and graphical symbols EN 13053:2001, Ventilation for buildings - Air handling units Ratings and performance for units, components and sections EN 13501-1, Fire classification of construction products and building elements Part 1: Classification using test data from reaction to fire t
34、ests EN 61310-1, Safety of machinery Indication, marking and actuation Part 1: Requirements for visual, auditory and tactile signals (IEC 61310-1:1995) EN ISO 3743 (all parts), Acoustics Determination of sound power levels of noise sources Engineering methods for small, movable sources in reverberan
35、t fields EN ISO 3744, Acoustics Determination of sound power levels of noise sources using sound pressure Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994) Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1
36、886:2007EN 1886:2007 (E) 8 EN ISO 11546-2, Acoustics Determination of sound insulation performances of enclosures Part 2: Measurements in situ (for acceptance and verification purposes) (ISO 11546-2:1995) EN ISO 12100-2, Safety of machinery Basic concepts, general principles for design Part 2: Techn
37、ical principles (ISO 12100-2:2003) 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 12792:2003 and EN 13053:2001 and the following apply. 3.1 air handling unit real unit factory made encased unit serving as a prime mover of a ventilation or ai
38、r conditioning installation where outdoor air, recirculated air or extract air is treated, consisting of a fan section where a filter section and heat exchanger may be connected. In addition the unit may consist of an inlet section with one or more louvres and dampers, a mixing section, heat recover
39、y section, one or more heating and cooling coils, humidifiers, sound attenuators and additional equipment such as controls, measuring sections etc. 3.2 air handling unit model box special test unit (defined in 8.3.2) used to execute measurements for general classification, comparison or categorisati
40、on of series or individual casings 4 Usage of real units and/or model boxes for the verification of mechanical performances For clear and non-ambiguous differentiation, it shall always be indicated whether the measurement has been made on the real unit or on the model box by using the letter “M“ for
41、 the model box and “R“ for the real unit in documentation. Test criteria of model boxes and real units are presented in Table 1. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1886:2007EN 1886:2007 (E) 9 Table 1 Test criteria of model box and
42、 real unit Kind of casing Test criteria Model box (M) Real unit (R) Mechanical strength General classification of casing construction Particular classification of casing construction and individual evaluationAir leakage General classification of casing construction Particular classification of casin
43、g construction and individual evaluationFilter bypass leakage General classification of casing construction Particular classification of casing construction and individual evaluationThermal transmittance General classification of casing construction - Thermal bridging General classification of casin
44、g construction - Acoustic insulation General classification of casing construction - 5 Mechanical strength of casing 5.1 Requirements and classification Air handling unit casings shall be categorised into classes in accordance to Table 2. Table 2 Casing strength classification of air handling units
45、Casing class Maximum relative deflection mm m-1D1 D2 D3 4 10 exceeding 10 NOTE The leakage test shall be done after the strength test. For clear and non-ambiguous differentiation it shall always be indicated whether the measurement was made on the real unit or on the model box by using letter “M“ fo
46、r the model box and “R“ for the real unit in documentation. EXAMPLE D1 (M) Class D1 and Class D2 casings shall be designed and selected so that the maximum deflection of any span of the panels and/or frames does not exceed the limits in Table 2 (see Figure 2). Licensed Copy: Wang Bin, ISO/EXCHANGE C
47、HINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1886:2007EN 1886:2007 (E) 10 The casings of class D1, D2 and D3 have to withstand the maximum fan pressure (not shock pressure) at the selected design fan speed. No permanent deformation (hysteresis maximum 2,0 mm per m frame/panel sp
48、an) of the structural parts (structures and supports) or damage of the casing may occur. Table 3 Test pressures Kind of casing Test criteria Model box (M) Real unit (R) Deflection 1 000 Pa Normal operating conditions at selected design fan speed Withstand maximum fan pressure 2 500 Pa Maximum fan pr
49、essure at selected design fan speed Parts of the real unit, which are running under positive pressure, shall be tested under positive pressure. Parts of the real unit, which are running under negative pressure, shall be tested under negative pressure. Deviating test pressures shall be specified between the manufacturer and purchaser. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 05/02/2009 02:00, Uncontrolled Copy, (c) BSIBS EN 1886:2007EN 1886:2007 (E) 11 Key A Panel deflection B Frame deflection Figu
