EN 17166:2019

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ventilatoren - Verfahren und Methoden zur Ermittlung der Energieeffizienz für die elektrische Eingangsleistung im Bereich von 125 W bis 500 kWVentilateurs - Procédures et méthodes pour déterminer et évaluer l`efficacité énergétique pour la gamme de puissance d`entrée électrique de 125 W jusqu´à 500 kWFans - Procedures and methods to determine the energy efficiency for the electrical input power range of 125 W up to 500 kW23.120QDSUDYHVentilators. Fans. Air-conditionersICS:Ta slovenski standard je istoveten z:prEN 17166oSIST prEN 17166:2017en,fr,de01-november-2017oSIST prEN 17166:2017SLOVENSKI

Fans æ Procedures and methods to determine the energy efficiency for the electrical input power range of

w r r kW Ventilateurs æ Procédures et méthodes pour déterminer et évaluer l®efficacité énergétique pour la gamme de puissance d®entrée électrique de

Ventilatoren æ Verfahren und Methoden zur Ermittlung der Energieeffizienz für die elektrische Eingangsleistung im Bereich von

w r r kW This draft European Standard is submitted to CEN members for enquiryä It has been drawn up by the Technical Committee

If this draft becomes a European Standardá CEN members are bounwhich stipulate the conditions for giving this European Standard the status of a national standard without any alterationä

This draft European Standard was established by CEN in three ofer language made by translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

Recipients of this draft are invited to submitá with their commentsá notification of any relevant patent rights of which they are aware and to provide supporting documentationä

Warning ã This document is not a European Standardä It is distributed for review and commentsä It is subject to change without notice and shall not be referred to as a European Standardä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä prEN

prEN 17166:2017 (E) 2 Contents Page European foreword ......................................................................................................................................................... 5 1 Scope ...................................................................................................................................................................... 6 2 Normative references ...................................................................................................................................... 6 3 Terms and definitions ...................................................................................................................................... 6 4 Requirements ................................................................................................................................................... 24 4.1 General ................................................................................................................................................. 24 4.2 Identify the fan type ......................................................................................................................... 24 4.3 Identify an appropriate measurement category (see EN 13349) ................................... 25 4.4 Identify the test and calculation methods from the following standards appropriate to the fan type .................................................................................................................................................. 25 5 Testing and calculation methods .............................................................................................................. 25 5.1 General ................................................................................................................................................. 25 5.2 Test method ........................................................................................................................................ 25 5.3 Significant elements of the fan (boundary conditions) ...................................................... 26 5.3.1 Significant elements ..............................................................................................................................................26 5.3.2 Boundary ....................................................................................................................................................................28 5.3.3 Examples of fan arrangements..........................................................................................................................28 5.4 Requirement for testing final assembly fans .......................................................................... 34 5.5 Test method including scaling final assembly and impellers ........................................... 34 5.5.1 General ........................................................................................................................................................................34 5.5.2 Choice of testing or calculation method ........................................................................................................34 5.6 Calculation method not final assembly54.6 ............................................................................ 36 5.6.1 General ........................................................................................................................................................................36 5.6.2 Not final assembly calculation...........................................................................................................................36 5.7 Test information ............................................................................................................................... 39 5.7.1 General ........................................................................................................................................................................39 5.7.2 Fan performance information ...........................................................................................................................40 5.7.3 Jet fan performance information ......................................................................................................................40 5.8 Information declaration ................................................................................................................. 41 5.8.1 General ........................................................................................................................................................................41 5.8.2 Final assembly fans ................................................................................................................................................41 oSIST prEN 17166:2017

prEN 17166:2017 (E) 3 5.8.3 Not final assembly fans ........................................................................................................................................41 5.8.4 Jet fans .........................................................................................................................................................................41 6 Evaluation of conformity ............................................................................................................................. 41 6.1 Introduction........................................................................................................................................ 41 6.2 Method of comparison between efficiency grades ............................................................... 42 6.3 Method of comparison between efficiency values ................................................................ 42 6.4 Method of comparison between efficiency values, including market surveillance tolerance ............................................................................................................................................................ 42 7 Classification and designation ................................................................................................................... 43 8 Classification and designation ................................................................................................................... 43 8.1 General ................................................................................................................................................. 43 8.2 Marking ................................................................................................................................................ 43 8.3 Product information requirements on fans ............................................................................ 43 9 Installation and maintenance information ........................................................................................... 44 Annex A (informative)

Explanatory notes on fans integrated in other energy related products ..... 45 A.1 Integrated fans................................................................................................................................................. 45 A.1.1 Explanation ....................................................................................................................................................... 45 A.1.2 Requirements ................................................................................................................................................... 45 A.2 Identify the significant elements of the fan ........................................................................................... 45 A.2.1 The significant elements .............................................................................................................................. 45 A.2.2 The boundary ................................................................................................................................................... 45 A.3 Facsimile of the fan ........................................................................................................................................ 47 Annex B (informative)

Toxic, highly corrosive, flammable, abrasive substances ................................. 48 B.1 Arduous environments ................................................................................................................................. 48 B.2 Toxic .................................................................................................................................................................... 48 B.3 Highly corrosive .............................................................................................................................................. 48 B.4 Flammable ......................................................................................................................................................... 48 B.5 Abrasive ............................................................................................................................................................. 49 Annex C (informative)

Guide to using the standard .......................................................................................... 50 oSIST prEN 17166:2017

Significant elements ........................................................................................................ 53 D.1 Significant elements of a fan ....................................................................................................................... 53 Annex E (informative)

Suggested format for compliance certification reports requested by market surveillance authorities ............................................................................................................................... 54 Annex ZA (informative)

Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EU) No 327/2011 aimed to be covered ............... 57 Bibliography ................................................................................................................................................................... 59 oSIST prEN 17166:2017

prEN 17166:2017 (E) 5 European foreword This document (prEN 17166:2017) has been prepared by Technical Committee CEN/TC 156 “Ventilation for buildings”, the secretariat of which is held by BSI. This document is currently submitted to the CEN Enquiry. oSIST prEN 17166:2017

prEN 17166:2017 (E) 6 1 Scope This harmonized European Standard provides procedures and methods for measuring and/or calculating the energy efficiency and associated characteristics of fans when driven by electric motors. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 5801:2017, Fans — Performance testing using standardized airways (ISO 5801:2017) EN ISO 5802, Industrial fans — Performance testing in situ (ISO 5802) EN ISO 12759:2015, Fans — Efficiency classification for fans (ISO 12759:2010 + A1:2013) EN ISO 13349:2010, Fans — Vocabulary and definitions of categories (ISO 13349:2010) EN ISO 13350, Fans - Performance testing of jet fans (ISO 13350) ISO 13348, Industrial fans — Tolerances, methods of conversion and technical data presentation 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 fan rotary-bladed machine that receives mechanical energy and utilizes it by means of one or more impellers fitted with blades to maintain a continuous flow of air or other gas passing through it and whose work per unit mass does not normally exceed 25 kJ/kg [SOURCE: EN ISO 13349:2010, definition 3.1.1] 3.2 fans driven by motors fan driven by an electrical motor (included all transmissions and drives) Note 1 to entry: One or more impellers fitted to or connected to a motor, with or without a drive mechanism, a housing and a means of variable speed drive. Note 2 to entry: See Figure 10. Note 3 to entry: Adapted from ISO 13349:2010, definition 3.1.3. [SOURCE: EN ISO 12759:2015, definition 3.1.5] 3.3 impeller rotating part of the fan that is imparting energy into the gas flow and is also known as the fan wheel 3.4 fan type fan of specific and typical design primarily distinguished by the geometry of its impeller and the gas path through the fan oSIST prEN 17166:2017

prEN 17166:2017 (E) 7 3.4.1 axial, mixed flow and centrifugal fan fan types a1 2 (see figures) Note 1 to entry: 1 is the angle of the tangent at the hub at the intersection of the blade trailing edge with 2 is the angle of the tangent at the shroud or at the outer diameter of the blade at the intersection of the blade trailing edge with the shroud or with the outer diameter of the blade. The fan types are defined as in Table 1: Table 1 — Fan type defined by the relationship of the blade and the shroud/hub Fan type Angl a Axial fan

= 1 2)/2. Note 2 to entry: Centrifugal fans contain the types „centrifugal radial bladed fan“ (including radial tip), „centrifugal forward curved fan“ and „centrifugal backward curved fan“ (including also backward inclined and backward curved aerofoil bladed fans). Note 3 to entry: 1 2 are the mean values in circumferential direction.

prEN 17166:2017 (E) 8 3.4.2 axial fan axial-flow fan in which the air enters and leaves the impeller along essentially cylindrical surfaces coaxial with the fan [SOURCE: EN ISO 13349:2010, definition 3.1.1] 3.4.3 mixed-flow fan fan in which the fluid path through the impeller is intermediate between the centrifugal and axial-flow types Note 1 to entry: See to 3.4.1. [SOURCE: EC 327/2011, definition 15] 3.4.4 centrifugal fan fan in which the air enters the impeller with an essentially axial direction and leaves it in a direction perpendicular, or near perpendicular to this axis (see Table 1 and Figure 1) Note 1 to entry: For further details see 3.5. 3.4.5 cross flow fan (tangential fan) fan in which the fluid path through the impeller is in a direction essentially at right angles to its axis both entering and leaving the impeller at its periphery [SOURCE: EN ISO 13349:2010, definition 3.6.4]

Figure 2 — Cross flow fan 3.4.6 jet fan (impulse fan) fan used for producing a jet of air in a space and unconnected to any ducting oSIST prEN 17166:2017

prEN 17166:2017 (E) 9 Note 1 to entry: The air jet can be used, for example, for adding momentum to the air within a tunnel or other space (e.g. enclosed car park), or for intensifying the heat transfer in a determined zone.

Figure 4 — Centrifugal jet fan 3.5 Detailed specification of centrifugal fan types 3.5.1 centrifugal forward curved fan centrifugal fan with curved blades, where the outward direction of the blades at the periphery is forward relative to the direction of rotation oSIST prEN 17166:2017

Figure 5 — Centrifugal forward curved fan 3.5.2 centrifugal backward curved fan centrifugal fan with curved blades, where the outward direction of the blades at the periphery is backward relative to the direction of rotation

Figure 6 — Centrifugal backward curved fan 3.5.3 centrifugal backward inclined fans centrifugal fan with flat blades, where the outward direction of the blades at the periphery is backward relative to the direction of rotation oSIST prEN 17166:2017

Figure 7 — Centrifugal backward inclined fan 3.5.4 centrifugal backward aerofoil fan centrifugal fan with aerofoil blades (where the thickness of the blade is not constant throughout its length), where the outward direction of the blades at the periphery is backward relative to the direction of rotation

Figure 8 — Centrifugal backward aerofoil fan 3.5.5 centrifugal radial tip fan centrifugal fan with flat or curved blades, where the outward direction of the blades at the periphery is radial oSIST prEN 17166:2017

Figure 9 — Centrifugal radial tip fan 3.6 housing stationary part which interacts with the air stream passing through the impeller Note 1 to entry: A housing could be a device around the impeller which guides the gas steam towards, through and from the impeller. Note 2 to entry: A housing may have additional parts included within the housing or attached to the housing to affect the performance of the fan. Such as: — inlet bell, also known as venturi inlet, inlet cone, inlet radius; — inlet guide vane; — outlet guide vane; — outlet diffuser. Note 3 to entry: Additional parts are devices not listed above that provide an impact of the air power of the fan. Note 4 to entry: Housing also called stator. 3.6.1 orifice ring ring with an opening in which the fan sits and which allows the fan to be fixed to other structures 3.6.2 inlet guide vanes vanes positioned before the impeller to guide the gas stream towards the impeller and which may or may not be adjustable oSIST prEN 17166:2017

prEN 17166:2017 (E) 13 3.6.3 outlet guide vanes vanes positioned after the impeller to guide the gas stream from the impeller and which may or may not be adjustable 3.6.4 orifice panel panel with an opening in which the fan sits and which allows the fan to be fixed to other structures 3.6.5 diffuser device that improves the fan performance thorough static recovery 3.6.6 inlet cone (also known as venturi inlet, inlet bell, inlet radius) device that steers the air into the housing and reduces the vena contracta and turbulence that would occur at a sharp edge of the housing 3.6.7 fan without housing fan designed not to rely upon a housing for its correct operation 3.6.8 fan with housing fan designed to rely upon a housing for its correct operation 3.7 specific ratio stagnation pressure measured at the fan outlet divided by the stagnation pressure at the fan inlet at the optimal energy efficiency point of the fan; also known as compression ratio [SOURCE: Regulation EC 327/2011, definition 18] 3.8 measurement category fan test configuration according to the arrangement of standardised test airways; also known as installation category according to EN ISO 5801 and EN ISO 13349 3.8.1 measurement category A test configuration composed of the fan under test without any inlet or outlet duct fitted, optionally tested with the ancillaries supplied with the fan, i.e. protection grid, inlet bell, etc. Note 1 to entry: Also known as test configuration category A (see EN ISO 5801:2017, 6.2). 3.8.2 measurement category B test configuration composed of the fan under test with an outlet duct fitted, simulating ducted conditions, optionally tested with the ancillaries supplied with the fan Note 1 to entry: Also known as test configuration category B (see EN ISO 5801:2017, 6.3). oSIST prEN 17166:2017

prEN 17166:2017 (E) 14 3.8.3 measurement category C test configuration composed of the fan under test with an inlet duct fitted, simulating ducted conditions, optionally tested with the ancillaries supplied with the fan Note 1 to entry: Also known as test configuration category C (see EN ISO 5801:2017, 6.4). 3.8.4 measurement category D test configuration composed of the fan under test with an inlet and an outlet duct fitted, simulating ducted conditions, optionally tested with the ancillaries supplied with the fan Note 1 to entry: Also known as test configuration category D (see EN ISO 5801:2017, 6.5). 3.8.5 measurement category E test configuration with free inlet and free outlet without a partition Note 1 to entry: Also known as test configuration category E. [SOURCE: EN ISO 13349:2010, definition 3.4.5] Note 2 to entry: It is defined in EN ISO 5801 but is not relevant to this standard. Note 3 to entry: For jet fans there is no relationship between measurement category E and EN ISO 13350 (Jet fan standard) in determining products efficiencies. Note 4 to entry: In this measurement category a fan cannot produce any static pressure rise. 3.9 Power

prEN 17166:2017 (E) 16 3.9.1 fan gas power identical to the fan air power (installations B and D) or the fan static air power (installations A and C) 3.9.2 fan air power Pu also known as fan total air power; conventional output power which is the product of the mass flow rate and the fan work per unit mass, or the product of the inlet volume flow rate, the compressibility coefficient and the fan pressure q × pf × kp [SOURCE: EN ISO 12759:2015, 3.3.12] 3.9.3 fan static air power Pus conventional output power which is the product of the mass flow rate and the fan static work per unit mass, or the product of the inlet volume flow rate, the compressibility coefficient and the fan static pressure q × psf × kp [SOURCE: EN ISO 12759:2015, 3.3.13] 3.9.4 impeller power Pr mechanical power supplied to the fan impeller [SOURCE: EN ISO 12759:2015, 3.3.14] 3.9.5 fan shaft power Pa mechanical power supplied to the fan shaft [SOURCE: EN ISO 12759:2015, 3.3.16] Note 1 to entry: Fan shaft power includes bearing losses, while fan impeller power does not. Note 2 to entry: When the impeller is directly supported on the motor shaft the fan shaft power and the fan impeller power are the same. 3.9.6 motor output power Po shaft power output of the electric motor 3.9.7 motor input power Pe electrical input power supplied at the terminals of an electric motor drive without a variable speed drive oSIST prEN 17166:2017

prEN 17166:2017 (E) 17 3.9.8 drive control electrical input power Ped electrical input power measured at the input terminals to the variable speed drive of a motor 3.10 efficiency is the ratio between air power and a known input power 3.10.1 efficiency category means the fan gas output energy form used to determine the fan energy efficiency, either static efficiency or total efficiency where: a) 'fan static pressure' (Psf) has been used to determine fan gas power in the efficiency equation for fan static efficiency, and b) 'fan total pressure' (Pf) has been used to determine fan gas power in the efficiency equation for total efficiency [SOURCE: Regulation EC 327/2011, Annex I, definition (6)] 3.10.1.1 total efficiency t means the energy efficiency of a fan, based upon measurement of the ‘fan total pressure’ (pf) [SOURCE: Regulation EC 327/2011, Annex I, definition (12)] Note 1 to entry: There are several total efficiencies depending on the power selected as an input, all of them using fan air power as the measure of the output power (see 3.10.2 and Table 2). 3.10.1.2 static efficiency s means the energy efficiency of a fan, based upon measurement of the ‘fan static pressure’ (psf) [SOURCE: Regulation EC 327/2011, Annex I, definition (7)] Note 1 to entry: There are several static efficiencies depending on the power selected as an input, all of them using fan air power as the measure of the output power (see 3.10.2 and Table 2). 3.10.2 efficiency definitions depending on input power efficiency depends on which power is chosen as the input power 3.10.2.1 fan impeller efficiency r fan air power divided by the impeller power [SOURCE: EN ISO 12759:2015, definition 3.4.1] oSIST prEN 17166:2017

prEN 17166:2017 (E) 18 3.10.2.2 fan shaft efficiency a fan air power divided by the fan shaft power [SOURCE: EN ISO 12759:2015, definition 3.4.2] Note 1 to entry: Shaft power, Pa, includes bearing losses, while impeller power, Pr, does not. 3.10.2.3 overall efficiency for a fan without variable speed drive e fan air power divided by the motor input power for the fan without variable speed drive 3.10.2.4 overall efficiency for a fan with variable speed drive ed fan air power divided by the drive control electrical input power for the fan with variable speed drive 3.10.2.5 relationship between powers and efficiencies

Table 2 — Relationship between powers and efficiencies Input powers Installation category

A and C Fan static air power (Pus) Static efficiencies B and D Fan air power (Pu) Total efficiencies Drive/control electrical input power (Ped) esd

Pus /Pr r = Pu /Pr 3.10.3 motor efficiency m motor output power divided by the motor input power 3.10.4 variable speed drive efficiency c motor input power divided by the drive control electrical input power oSIST prEN 17166:2017

prEN 17166:2017 (E) 19 3.10.5 efficiency grade NG parameter in the calculation of the target energy efficiency of a fan of known electric input power at its optimum energy efficiency point (expressed as parameter ‘NG’ in the calculation of the fan energy efficiency) Note 1 to entry: For efficiency grades the Regulation 327/2011 uses “N”. Note 2 to entry: This quantity in other standards is also called Fan and Motor Efficiency Grade (FMEG). Reference EN ISO 12759. 3.10.6 fan efficiency grade Ne efficiency grade at optimum energy efficiency point 3.10.7 target energy efficiency target minimum energy efficiency a fan must achieve in order to meet the requirements set out by Regulation Note 1 to entry: It is based on the fan type, its electrical input power at its point of optimum energy efficiency and the specified efficiency grade. [SOURCE: Regulation EC 327/2011, Annex I, definition (15)] 3.11 Fan pressure 3.11.1 fan total pressure pf for velocities (v2) which are below 65 m/s the values of total pressure and stagnation pressure are practically the same The fan total pressure is the difference between total pressures at the fan outlet and the fan inlet: pf

psg1 difference between the stagnation pressures at the fan outlet and the fan inlet. Note 1 to entry: For the establishment of the value 65 m/s see EN ISO 5801:2017, Clause 13. Note 2 to entry: In other standards fan total pressure is also expressed as fan pressure. 3.11.2 fan dynamic pressure pfd dynamic pressure of the fan, defined at the fan outlet with the average velocity: oSIST prEN 17166:2017

prEN 17166:2017 (E) 20 ρ==⋅22fdd222vpp [SOURCE: EN ISO 5801:2017, definition 3.32] 3.11.3 fan static pressure pfs for velocities (v2) below 65 m/s the fan static pressure is the difference between the static pressure at the fan outlet and the total pressure at the fan inlet: pfs