BS EN 13141-6:2014 BSI Standards Publication Ventilation for buildings — Performance testing of components/products for residential ventilation Part 6: Exhaust ventilation system packages used in a single dwelling BS EN 13141-6:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 13141-6:2014 It supersedes BS EN 13141-6:2004 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee RHE/2, Ventilation for buildings, heating and hot water services A list of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 this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © The British Standards Institution 2015 Published by BSI Standards Limited 2015 ISBN 978 580 79750 ICS 91.140.30 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2015 Amendments issued since publication Date Text affected BS EN 13141-6:2014 EN 13141-6 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM December 2014 ICS 91.140.30 Supersedes EN 13141-6:2004 English Version Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 6: Exhaust ventilation system packages used in a single dwelling Ventilation des bâtiments - Essais de performance des composants/produits pour la ventilation des logements Partie 6: Kits pour systèmes de ventilation par extraction pour le logement individuel Lüftung von Gebäuden - Leistungsprüfung von Bauteilen/Produkten für die Lüftung von Wohnungen - Teil 6: Baueinheiten für Abluftanlagen für eine einzelne Wohnung This European Standard was approved by CEN on September 2014 CEN members are bound to comply with the CEN/CENELEC 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 CEN-CENELEC Management Centre or to any CEN 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 CEN-CENELEC Management Centre has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 13141-6:2014 E BS EN 13141-6:2014 EN 13141-6:2014 (E) Contents Page Foreword Introduction Scope Normative references Terms and definitions 10 Symbols and abbreviations 11 5.1 5.2 5.2.1 Performance testing of aerodynamic characteristics 12 General 12 Test installation and conditions 13 Test configuration 13 5.2.1.1 Test installation 13 5.2.1.2 Maximum airflow test configuration 13 5.2.1.3 Minimum airflow test configuration 14 5.2.1.4 Boosted airflow test configuration 14 5.2.1.5 5.2.2 5.2.3 5.2.4 Energy efficiency test — reference configuration 14 Installation of duct connecting roof/wall outlet terminal to the fan unit 16 Installation of ducts connecting exhaust air terminal devices and fan unit 16 Test conditions 17 5.2.4.1 Exhaust conditions 17 5.2.4.1.1 Normal conditions 17 5.2.4.1.2 Wind conditions 18 5.2.4.2 Temperature 18 5.2.4.3 Electrical conditions 18 5.3 Test procedure 18 5.4 Presentation of results 18 Performance testing of external leakages 19 7.1 7.2 7.3 7.4 Performance testing of electrical power 20 General 20 Method 21 Analysis of results 21 Presentation of results 21 Performance testing of energy efficiency 21 9.1 9.2 9.2.1 9.2.2 9.2.3 9.3 9.3.1 9.3.2 Performance testing of acoustic characteristic 22 General 22 Determination of the sound power level of the exhaust air terminal devices or range hood 23 Test installation and conditions for exhaust air terminal devices 23 Test installation and conditions for range hoods 24 Test procedure 24 Determination of the sound power level of the fan unit 24 General — Noise radiated through the casing of the unit 24 Test installation and conditions 24 BS EN 13141-6:2014 EN 13141-6:2014 (E) 9.3.3 9.4 Measurements 24 Presentation of the results 25 Annex A (informative) Example of compensating mounting for air flow measurement device 26 Bibliography 27 BS EN 13141-6:2014 EN 13141-6:2014 (E) Foreword This document (EN 13141-6:2014) 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 the latest by June 2015, and conflicting national standards shall be withdrawn at the latest by June 2015 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 all such patent rights This document supersedes EN 13141-6:2004 In comparison to EN 13141-6:2004 the following changes have been made: — in Clause 3, introduction of the definition of: maximum and minimum air volume flows (qvmax and qvmin), demand control ventilation (DCV), boosted air volume flow (qvboost), short duct and long duct and reference configuration (for the energy efficiency calculation); — in 5.2.2, differentiation of the duct connecting the roof/wall outlet to the fan unit depending if the fan unit outlet is situated on the top of the fan unit or if it is situated on a face of the fan unit; — modification of Figure describing the types of long ducts and long branched ducts (it now explains how to deal with long branched ducts on which there are more than spigots); — modification of Table for the presentation of the aerodynamic characteristics; — adding in Clause of a procedure for the measurement of the external leakage; — adding of Table giving a classification of the external leakage; — in Clause 7, specification of the test conditions for the measurement of the electrical power; — in Clause 8, adding of a paragraph defining the test conditions and the calculation for the obtaining of the energy efficiency; — creation of Table for the presentation of the power consumption results; — in Clause 9, specification of the acoustic test conditions; — in Annex A, modification and explanation of Figure A.1 representing an example of compensating mounting for air flow measurement device EN 13141 consists of the following parts, under the general title Ventilation for buildings ― Performance testing of components/products for residential ventilation: — Part 1: Externally and internally mounted air transfer devices — Part 2: Exhaust and supply air terminal devices — Part 3: Range hoods for residential use — Part 4: Fans used in residential ventilation systems BS EN 13141-6:2014 EN 13141-6:2014 (E) — Part 5: Cowls and roof outlet terminal devices — Part 6: Exhaust ventilation system packages used in a single dwelling — Part 7: Performance testing of a mechanical supply and exhaust ventilation units (including heat recovery) for mechanical ventilation systems intended for single family dwellings — Part 8: Performance testing of un-ducted mechanical supply and exhaust ventilation units (including heat recovery) for mechanical ventilation systems intended for a single room — Part 9: Externally mounted humidity controlled air transfer device — Part 10: Humidity controlled extract air terminal device — Part 11: Positive pressure ventilation systems 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom BS EN 13141-6:2014 EN 13141-6:2014 (E) Introduction This European Standard specifies test methods on ventilation system package and permits to avoid tests on each component separately The performance characteristics of the components/products for residential ventilation are given in EN 13142, [1] The position of this European Standard in the field of standards for the mechanical building services is shown in Figure BS EN 13141-6:2014 EN 13141-6:2014 (E) Figure 1— Position of EN 13141-6 in the field of the mechanical building services BS EN 13141-6:2014 EN 13141-6:2014 (E) Scope This European Standard specifies laboratory methods for measuring the aerodynamic and acoustic performance characteristics and energy consumption of assembled exhaust ventilation system packages for a single dwelling If a component of the package is not physically linked to the others (e.g air inlets), then it is assumed to have been tested according to the test method related to this component An example of a typical exhaust package is given in Figure The object of this European Standard is to provide tested characteristics for a ventilation system package in worst case conditions It is assumed that better values are achieved on site when the ventilation system package is installed in accordance with the manufacturer's instruction and within the limits of the test conditions given in this standard Safety requirements are given in EN 60335-2-80 Key fan unit duct for extract air from roof/wall outlet exhaust air terminal device (toilets) duct for roof/wall outlet duct for extract air from static extraction range hood or exhaust 10 sound attenuators air terminal device (kitchen) 11 controls duct for range hood 12 set of air inlets exhaust air terminal device (bathroom) Figure — Example of system package: exhaust ventilation system package BS EN 13141-6:2014 EN 13141-6:2014 (E) Key total flow rate qv fan unit settings boost Figure — Example for the choice of the reference configuration for systems without automatic control devices 5.2.2 Installation of duct connecting roof/wall outlet terminal to the fan unit If the system exhausts the air directly to outside, the exhaust fan unit shall be connected to the roof/wall outlet terminal by the following ducting: — if the fan unit outlet is located on the top of the fan unit (and the extract spigots on the faces): straight duct of m long (see Figure 3); — if the fan unit outlet is located on a face of the fan unit (as well as the extract spigots): straight duct of 0,5 m long + 90° elbow + straight duct of m long NOTE vertical) These ducting allow to have the same mounting whichever position of the extract spigot (horizontal or When the system exhausts the air via a collecting duct, the fan exhaust shall be connected by a straight duct of m long to a device which can vary the pressure loss 5.2.3 Installation of ducts connecting exhaust air terminal devices and fan unit All exhaust air terminal devices shall be connected to the fan unit, using the maximum number of spigots specified by the manufacturer/supplier The straight duct lengths specified by the manufacturer shall be at least equal to those indicated in Figure a) and Figure b) The long branched ducts are as follows: — 16 if one exhaust is used then it is called number according to Figure b); BS EN 13141-6:2014 EN 13141-6:2014 (E) — if two exhausts are used then they are called number and number according to Figure b); — etc a) long duct b) long branched duct Key d d ≥ 1,5 m L L = (4,5 m ; n x d) Figure — Types of ducts for connection of exhaust air terminal devices to the fan unit in aerodynamic testing Duct configurations shall be made using the components provided or specified by the manufacturer or supplier When flexible ducts are provided or specified, they shall be extended to 90 % of their maximum length and shall be supported to prevent sagging and to maintain the specified elbow radius The elbow may be realised by the duct itself placed in an appropriate guide When a range hood is part of the package, it shall be placed at least m above floor Other exhaust air terminal devices may be left on the ground provided a correct orientation is provided and they are not facing the ground 5.2.4 Test conditions 5.2.4.1 5.2.4.1.1 Exhaust conditions Normal conditions The test shall be conducted under the following exhaust conditions: — Where the fan exhaust is connected to roof/wall outlet, the difference between the pressure upstream of the exhaust air terminal devices and the pressure downstream the roof/wall outlet shall be (0 ± 2) Pa NOTE This requirement is deemed to be satisfied when the exhaust air terminal devices and the roof / wall outlet are in the same room — Where the fan exhaust is connected to a collecting duct, pressure differences at the exhaust, defined by the manufacturer, shall be applied, including Pa 17 BS EN 13141-6:2014 EN 13141-6:2014 (E) 5.2.4.1.2 Wind conditions To test the wind effect, a counter-pressure of + 20 Pa at the exhaust shall be added: — to the normal conditions for connection to roof/wall outlet; — to the highest value for connection to a collecting duct Only the total exhaust air volume flow rate qvt at the fan unit outlet shall be measured 5.2.4.2 Temperature The temperature of the test room shall be maintained at 20 °C ± °C During the test, this temperature shall not vary by more than ± °C 5.2.4.3 Electrical conditions When a single value is assigned by the manufacturer as rated voltage, this shall be the test voltage Where a voltage range is assigned to the product by the manufacturer that includes 230 VAC, the test voltage shall be 230 VAC This voltage shall be maintained to ± % throughout the testing 5.3 Test procedure Air flow measurements, shall be in accordance with EN ISO 5167-1, EN ISO 5167-2, EN ISO 5167-3 and EN ISO 5167-4 Other measurement devices may be used if allowing measurements of equivalent uncertainty The measurement device pressure drop shall be compensated so as to restore the "normal condition" specified in 5.2.4.1.1 (see Annex A for an example of compensating mounting) The volume flow rate shall be measured with an uncertainty lower than: ( )( 0,3 + 0,03 × measured value l ⋅ s −1 ) 5.4 Presentation of results The test configurations and conditions shall be clearly described in a report Aerodynamics characteristics shall be presented in accordance with Table 18 BS EN 13141-6:2014 EN 13141-6:2014 (E) Table — Presentation of the aerodynamic characteristics Air flow rate qv Extract condition Minimum Maximum airflow test airflow test configuration configuration Maximum boosted airflow test configuration Other control setting Minimum airflow reference configuration b Boosted Maximum airflow airflow reference reference c configuration configuration Configuratio n Kitchen Bath Toilet Bath Toilet etc Fan unit a a Total air volume flow rate, qvt, measured downstream the fan b In case of automatic control devices c In case of the presence of a boosted function on the system Performance testing of external leakages The external leakage test shall be carried out by connecting an adjustable fan to the exhaust air side of the tested fan unit as shown in Figure The static pressure tapping is located on a blanking off plate and the tap is connected to a pressure measuring instrument The external leakage flow rates at under pressure in the casing are established with suitable air flow measuring equipment The accuracy of the measured values shall be kept within ± % for the flow rates and ± % for the static pressures of the casing 19 BS EN 13141-6:2014 EN 13141-6:2014 (E) Key adjustable fan air flow measuring equipment fan unit static pressure measuring equipment Figure — External leakage test configuration Pressure method applies to classify leakages by using Table Table — Leakage classification — Pressure method Class External leakage (at 250 Pa) % A1 ≤2 A2 ≤5 A3 ≤ 10 not classified > 10 The external leakage shall be measured according to EN 13141-7:2010, Annex B The external leakage air volume flow qve at under pressure of 250 Pa, according to Table 2, shall be reported as such and also compared to the maximum air volume flow qvmax of the unit as a percentage At least three different measurement points evenly distributed shall be made between 100 Pa and 300 Pa, and reported by means of a curve During the pressurisation tests for external leakages, the fan unit under test shall be switched off Performance testing of electrical power 7.1 General The electric power input PE of a unit shall be measured in several modes when possible 20 BS EN 13141-6:2014 EN 13141-6:2014 (E) In active mode, the unit is connected to the main power source and is providing the intended service This means the controls system is operating and the unit provides suitable ventilation rates according to the control strategy The electric power input PE shall be measured during each test described in 5.2.1.2, 5.2.1.3, 5.2.1.4 and 5.2.1.5 and shall be reported as in Table Table — Presentation of the power consumptions Minimum Maximum airflow test airflow test configuration configuration Maximum boosted airflow test configuration Extract condition Minimum airflow Maximum airflow Boosted airflow reference reference reference configuration configuration configuration a b PE a b In case of automatic control devices In case of the presence of a boosted function on the system The electric power input PE shall be measured according to EN 13141-4 If the system includes a mode in which the fans are not operating and control components are still active, then the electric power input shall also be measured in this mode If the system can be switched off manually or with any remote control system and if the end of this mode is also given by a manual action, the electric power input shall be measured with the high voltage in operation 7.2 Method The electrical power of the ventilation system package shall be determined according to EN ISO 5801 for same speed/setting of the fan as assessed in 5.1 7.3 Analysis of results The electrical power input determined in 7.2 shall be used to calculate the energy consumption per unit of total air flow rate 7.4 Presentation of results The results shall be presented in a graph (electrical power per unit of total air flow rate versus total air flow rate) Performance testing of energy efficiency For energy efficiency characterisation, measurements of the power supply shall be realized as specified in Clause at minimum (qvminref), maximum (qvmaxref) and boosted (qvboostref) air volume flows of the reference configuration if there is more than one speed (see Table 4) The test conditions are the same as in 5.2.4 The weighted specific power input part load, SPIw shall be calculated according to the formula below with the parameters defined in Table 4: 21 BS EN 13141-6:2014 EN 13141-6:2014 (E) SPIw = Fmin × PE minref + Fmax × PE maxref + Fboost × PE boostref Fmin × q vminref + Fmax × q vmaxref + Fboost × q vboostref where PE minref is the electrical power measured at q vminref , in W; PE maxref is the electrical power measured at q vmaxref , in W; PE boostref is the electrical power measured at q vboostref , in W; q vminref is the sum of the air volume flow rates of all the air terminal devices at their minimum setting, in m /s; q vmaxref is the sum of the air volume flow rates of all the air terminal devices at their maximum setting, in m /s; q vboostref is the sum of the air volume flow rates of all the air terminal devices at their boost setting, in m /s; Fmin , Fmax , Fboost are occurrence frequencies Table — Values of occurrence frequencies Fmin , Fmax and Fboost for part load weighting Fmin Fmax Fboost a On/off ― ― Fixed — speed with boost function ― 0,96 0,04 Fixed — speed without boost function ― ― Fixed — or speeds with boost function 0,22 0,74 0,04 Fixed — or speeds without boost function 0,23 0,77 ― 0,5 0,46 0,04 0,52 0,48 ― Application DCV with boost function a DCV without boost function a a The values of occurrence frequencies for DCV systems have been established by making a linear extrapolation on one single power curve Performance testing of acoustic characteristic 9.1 General The following acoustic characteristics can be determined: — sound power level emitted by each type of exhaust ATD; — sound power level emitted by the casing The air flows shall be determined for the conventional configuration specified in 9.2.1, the short duct giving the most unfavourable extract condition for acoustics The following acoustic data shall be included in the report: — 22 sound power level LW ; BS EN 13141-6:2014 EN 13141-6:2014 (E) — A-weighted sound power level LWA; — sound power levels in octave bands between 125 Hz and 000 Hz 9.2 Determination of the sound power level of the exhaust air terminal devices or range hood 9.2.1 Test installation and conditions for exhaust air terminal devices The exhaust air terminal device to be tested shall be connected to the fan unit through a "short duct" as shown in Figure Key elbow extract air Figure — Type of ducts for connection of exhaust air terminal devices to the fan unit in acoustic testing The straight duct lengths are specified by the manufacturer and are at maximum equal to those indicated above The duct is 1,5 m long with a 90° elbow at the middle (between 40 % and 60 % of its length) The duct shall be stretched at approximately 90 % of its maximum length Acoustic measurements shall be made under the following conditions: — the maximum number of spigots as specified by the manufacturer shall be used; — the number of exhaust air terminal devices connected shall be as specified by the manufacturer; — the duct between the exhaust air terminal device under test and the fan unit shall be as specified by the manufacturer; — the ducts for the other exhaust air terminal devices shall be "short ducts", and outside the measurement room in which is the exhaust air terminal device only; — the duct connection between roof/wall outlet and the fan unit shall be as specified in 5.2.2; — where a single value is assigned by the manufacturer as rated voltage, this shall be the test voltage Where a voltage range is assigned to the product by the manufacturer that includes 230 VAC, the test voltage shall be 230 VAC This voltage shall be maintained to ± % throughout the testing; — test shall be carried out under test voltage; 23 BS EN 13141-6:2014 EN 13141-6:2014 (E) — where specified, a sound attenuator shall be incorporated The sound attenuator shall be taken from the package (if any) or conform to the manufacturer/supplier's instruction, and in any case shall be the same as for the flow rate measurement; — the air terminal device shall be installed outside symmetrical axes and at a minimum of 1,50 m from other walls 9.2.2 Test installation and conditions for range hoods The test installation and conditions for range hoods shall be in accordance with EN 60704-2-13 9.2.3 Test procedure One test shall be made for each type of exhaust air terminal device or range hood (characterized by its nominal flow rate), and for at least maximum speed of the fan, boosting mode excluded The measurement procedure shall be in accordance with EN ISO 3741 9.3 Determination of the sound power level of the fan unit 9.3.1 General — Noise radiated through the casing of the unit The sound power level of the noise radiated by the casing shall be carried out according to engineering methods described in EN ISO 3743-1 or EN ISO 3743-2 (reverberation room), EN ISO 3744 (free field) or EN ISO 9614-1 or EN ISO 9614-2 (sound intensity) or according respectively to the following precision methods described in EN ISO 3741, EN ISO 3745 or EN ISO 9614-1 Methods based on free field are usually more convenient as it is easier to manage the other disturbing sources of noise, such as the noise radiated by the duct and/or by the ATD The unit shall be installed according to the manufacturer's instructions, and the maximum number of spigots as specified by the manufacturer shall be used To reduce the sound power radiated from the ducts, only rigid ducts shall be used Laboratory shall ensure that the radiated noise from the outlet of ducts shall not influence the measurement of noise radiated from the unit Screens or acoustical traps can also be installed to reduce the effect of the ATD radiation Airflow control devices used by laboratories shall not interfere with acoustic measurements One test shall be made for at least maximum speed of the fan, boosting mode excluded 9.3.2 Test installation and conditions The fan unit shall be positioned according to the manufacturer specification If installed into a closed room, the casing shall be away from all axis of symmetry of the room and walls The installation shall include any anti-vibration material delivered or specified by the manufacturer The installation specifications of the fan unit shall be noted down in the test report NOTE Most usually the fan unit is suspended The configuration shall be as specified in 9.2.1 9.3.3 Measurements One measurement shall be made for each of the air flow rates given in Table 24 BS EN 13141-6:2014 EN 13141-6:2014 (E) Where the exhaust air terminal devices are in the test room, the noise produced by all the exhaust air terminal devices shall be at least 15 dB at the respective measuring frequency range less than the fan unit noise Where the exhaust air terminal devices are outside of the test room, an ad hoc sound insulation between the room and outside shall be ensured The background noise shall be measured in the test room, with all the components in place for the tests but not operating 9.4 Presentation of the results The test configuration and conditions shall be clearly described in the report Results shall be presented according to Table for each control setting (minimum/maximum) Table — Presentation of the acoustic characteristics Overall sound power level LW global dB(A) 125 Hz 250 Hz 500 Hz 000 Hz 000 Hz 000 Hz 000 Hz Kitchen Bath Bath Toilet Toilet Fan casing 25 BS EN 13141-6:2014 EN 13141-6:2014 (E) Annex A (informative) Example of compensating mounting for air flow measurement device The role of the compensation mounting is to reinstate the ambient conditions by compensating the pressure drop of the measurement devices Figure A.1 gives an example of compensating mounting for air flow measurement device The chamber cross-sectional area in Figure A.1 shall be at least times the internal cross sectional area of duct of the device being tested Key air terminal device compensating fan airflow measurement device pressure measurement chamber Figure A.1 — Example of compensating mounting for air flow measurement device 26 BS EN 13141-6:2014 EN 13141-6:2014 (E) Bibliography [1] EN 13142, Ventilation for buildings - Components/products for residential ventilation - Required and optional performance characteristics 27 This page deliberately left blank This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national 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