1、July 2009DEUTSCHE NORM English price group 15No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 91.140.30!$XlV“1537351www
2、.din.deDDIN EN 1886Ventilation for buildings Air handling units Mechanical performanceEnglish version of DIN EN 1886:2009-07Lftung von Gebuden Zentrale raumlufttechnische Gerte Mechanische Eigenschaften und MessverfahrenEnglische Fassung DIN EN 1886:2009-07SupersedesDIN EN 1886:1998-07www.beuth.deDo
3、cument comprises 37 pagesDIN EN 1886:2009-07 2 Start of validity This standard takes effect on 1 July 2009. National foreword This standard has been prepared by Technical Committee CEN/TC 156 “Ventilation for buildings” (Secretariat: BSI, United Kingdom). The responsible German body involved in its
4、preparation was the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee), Section Allgemeine Lufttechnik. The European Standards referred to in clause 2 and in the bibliography of the EN have been published as the corresponding DIN EN or DIN EN ISO Standards with the same number
5、. Amendments This standard differs from DIN EN 1886:1998-07 as follows: a) The standard has been revised in form and substance. b) In addition to the “real unit”, a “model box” may also be used as test unit. c) Clause 2 “Normative references” has been updated. d) Clause 3 “Terms and definitions” has
6、 been supplemented by the “model box”. e) Clause 4 “Usage of real units and/or model boxes for the verification of mechanical performances” and Table 1 have been added. f) Clause 5 “Mechanical strength of casing” and the tables have been revised (e.g. classification, class designation, specification
7、 of test pressures for the model box). g) Clause 6 “Casing air leakage” including Tables 4 and 5 has been revised (e.g. classification, class designation) and equation (1) has been added. h) Clause 7 “Filter bypass leakage”: Table 7 and Figure 5 have been revised. Table 6 “Air flow rate of the filte
8、r section (qvnom) subject to the kind of unit” has been added. Figure 7 “Test apparatus for testing filter sections downstream of the fan second stage” has been added. Figure 9 “Test apparatus for testing filter sections with heat recovery section” has been added. i) Clause 8 “Thermal performance of
9、 casing” has been revised: Equation (7) for the determination of the thermal transmittance U has been added. The test procedure has been modified. Figure 10 “Zoning and installation of measuring devices” has been added. j) Clause 9 “Acoustic insulation of casing” has been revised. k) Clause 10 “Fire
10、 protection” and Clause 11 “Mechanical safety” have been revised. Previous editions DIN EN 1886: 1998-07 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1886December 2007ICS 91.140.30 Supersedes EN 1886:1998 English VersionVentilation for buildings - Air handling units - MechanicalperformanceVenti
11、lation des btiments - 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 Regulat
12、ions 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 obtained on application to the CEN Management Centre or to any CEN member.This Europ
13、ean 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 CEN Management Centre has the same status as theofficial versions.CEN members are the nation
14、al standards bodies 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 Unit
15、ed Kingdom.EUROPEAN 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: E2 Co
16、ntents 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 performances 8 5 Mechanical strength of casing 9 5.1 Requirements and classification. 9 5.2 Testing 12 6 Casing air leak
17、age. 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 6.2.1 Test apparatus. 14 6.2.2 Preparation for test 15 6.3 Test procedure 16 6.4 Determination of allowable leakage
18、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 Testing 17 7.2.1 General. 17 7.2.2 Filters downstream of the fan (positive pressure) 19 7.2.3 Filters upstream of the
19、 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 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. 2
20、8 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 . 30 10.1 General. 30 EN 1886:2007 (E) DIN EN 1886:2009-07 3 10.2 Material. 30 10.3 Sealings for air handling u
21、nits 30 10.4 Locally limited and small construction parts of air handling units . 31 10.5 Air 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 . 3
22、3 Bibliography . 35 EN 1886:2007 (E) DIN EN 1886:2009-07 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
23、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
24、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
25、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
26、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 1886:2007 (E) DIN EN 1886:2009-07 5 Figure 1 Position of this standard in the field of mechanical building services EN 1886:2007 (E) DIN EN 1
27、886:2009-07 6 Introduction This standard specifies the mechanical performance of an air handling unit as a whole 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
28、 unit will be considered in another series of standards covering air handling units. Because of different requirements 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 f
29、orm of classes, which may be specified to be used in certain regions, or separately for individual applications. EN 1886:2007 (E) DIN EN 1886:2009-07 7 1 Scope This standard specifies test methods, test requirements and classifications for air handling units, which are supplying and/or extracting ai
30、r via a ductwork ventilating/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
31、 manufacturing process. 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 HE
32、PA filters are recommended 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
33、to the calculation 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 refere
34、nces The following 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
35、ventilation Determination 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 f
36、or buildings Symbols, 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
37、reaction to fire tests 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 sou
38、rces in reverberant 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) EN 1886:2007 (E) DIN EN 1886:2009-07 8 EN ISO 11546-2, Acoustics Determination of sound
39、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: Technical principles (ISO 12100-2:2003) 3 Terms and definitions For the purposes
40、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 air conditioning installation where outdoor air, recirculated air or extract a
41、ir 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 recovery section, one or more heating and cooling coils, humidifiers, sound attenua
42、tors 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 categorisation of series or individual casings 4 Usage of real units and/or model boxes
43、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 the model box and “R“ for the real unit in documentation. Test criteria of
44、model boxes and real units are presented in Table 1. EN 1886:2007 (E) DIN EN 1886:2009-07 9 Table 1 Test criteria of model box and real unit Kind of casing Test criteria Model box (M) Real unit (R) Mechanical strength General classification of casing construction Particular classification of casing
45、construction and individual evaluationAir leakage General classification of casing construction Particular classification of casing construction and individual evaluationFilter bypass leakage General classification of casing construction Particular classification of casing construction and individua
46、l evaluationThermal transmittance General classification of casing construction - Thermal bridging General classification of casing construction - Acoustic insulation General classification of casing construction - 5 Mechanical strength of casing 5.1 Requirements and classification Air handling unit
47、 casings shall be categorised into classes in accordance to Table 2. Table 2 Casing strength classification of air handling units 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 differe
48、ntiation it shall always be indicated whether the measurement was made on the real unit or on the model box by using letter “M“ for 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
49、any span of the panels and/or frames does not exceed the limits in Table 2 (see Figure 2). EN 1886:2007 (E) DIN EN 1886:2009-07 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 span) 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
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