1、December 2016 English price group 15No part of this translation 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 91.140.65!%b1“2596314www.din.de
2、DIN EN 12897Water supply Specification for indirectly heated unvented (closed) storage water heaters;English version EN 12897:2016,English translation of DIN EN 12897:2016-12Wasserversorgung Bestimmung fr mittelbar beheizte, unbelftete (geschlossene) SpeicherWassererwrmer;Englische Fassung EN 12897:
3、2016,Englische bersetzung von DIN EN 12897:2016-12Alimentation en eau Prescriptions pour prparateurs deau chaude par accumulation chauffage indirect non ouverts lair libre (ferms);Version anglaise EN 12897:2016,Traduction anglaise de DIN EN 12897:2016-12SupersedesDIN EN 12897:200609www.beuth.deDocum
4、ent comprises 34 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.12.16 DIN EN 12897:2016-12 2 A comma is used as the decimal marker. National foreword This document (EN 12897:2016) has been prepared by Technical Committee CEN/T
5、C 164 “Water supply” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was DIN-Normenausschuss Heiz- und Raumlufttechnik (DIN Standards Committee Heating and Ventilation Technology), Working Committee NA 041-01-45 AA Wassererwrmer. Amendments This standard differs
6、 from DIN EN 12897:2006-09 as follows: a) the capacity range has been extended from 1 000 l to 2 000 l; b) the maximum temperature has been reduced from 100 C to 95 C; c) the durability test for cylinders using expansion vessels or internal expansion space has been revised; d) in Annex A, specificat
7、ions for the calculation of the V40hot water capacity have been included; e) Annex B has been revised to improve the test methodology and bring the standing heat loss test requirements in line with those specified in the EU directives on ecodesign and labelling of hot water storage tanks. Previous e
8、ditions DIN 4753: 1944-04 DIN 4753-1: 1980-10, 1988-03, 2011-11 DIN V 4753-8: 1996-12 DIN 4753-11: 1990-02 DIN EN 12897: 2006-09 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12897 June 2016 ICS 91.140.65 Supersedes EN 12897:2006English Version Water supply - Specification for indirectly heat
9、ed unvented (closed) storage water heaters Alimentation en eau - Prescriptions pour prparateurs deau chaude par accumulation chauffage indirect non ouverts lair libre (ferms) Wasserversorgung - Bestimmung fr mittelbar beheizte, unbelftete (geschlossene) Speicher-Wassererwrmer This European Standard
10、was approved by CEN on 15 April 2016. 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 n
11、ational 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 la
12、nguage 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, Gree
13、ce, 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 COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
14、CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12897:2016 EEN 12897:2016 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normative referenc
15、es 6 3 Terms, definitions and symbols . 6 3.1 Terms and definitions . 7 3.2 Symbols . 8 4 Requirements . 8 4.1 Constructional requirements . 8 4.1.1 Inspection access . 8 4.1.2 Draining 8 4.1.3 Hydraulic connections . 8 4.2 Temperature control . 8 4.3 Mechanical resistance and stability . 9 4.3.1 Pr
16、essure resistance of water storage vessel . 9 4.3.2 Pressure resistance of primary heater 9 4.3.3 Durability . 9 4.3.4 Leakage test on double-walled primary heater 11 4.4 Safety equipment 11 4.4.1 General . 11 4.4.2 Energy cut-out device . 11 4.4.3 Temperature relief valve 11 4.4.4 Pressure relief/e
17、xpansion valve 11 4.4.5 Pressure reducing valve 11 4.4.6 Provision for expansion . 12 4.4.7 Backflow prevention . 12 5 Marking 12 6 Evaluation of conformity . 12 6.1 General . 12 6.1.1 Compliance testing 12 6.1.2 Market surveillance 13 6.2 Initial type testing 13 6.2.1 General . 13 6.2.2 Actual volu
18、me 13 6.2.3 Rated storage volume . 13 6.2.4 Hot water volume . 13 6.2.5 Primary heating power (heat exchanger performance) 14 6.2.6 Durability testing . 14 6.2.7 Double-walled primary heaters 14 6.2.8 Standing heat loss 14 6.2.9 Pressure resistance . 14 6.2.10 Temperature control devices 14 6.2.11 H
19、eat exchanger pressure drop 14 6.3 Production testing . 14 6.4 Factory production control (FPC) 15 DIN EN 12897:2016-12EN 12897:2016 (E) 3 7 Technical documents 15 7.1 General . 15 7.2 Assembly and maintenance instructions . 15 7.3 Operating instructions 16 Annex A (normative) Hot water safety and p
20、erformance testing 17 A.1 Tests required 17 A.2 Test apparatus and tolerances 17 A.3 Performance tests 19 A.4 Interpretation and calculation of hot water performance results . 21 A.5 Function of safety devices 22 Annex B (normative) Measurement of standing heat loss for factory insulated storage wat
21、er heaters 23 B.1 General . 23 B.2 Apparatus 23 B.3 Test Procedure 25 B.4 Calculation of Results 26 Annex C (informative) Inspection access 28 Annex ZA (informative) Relationship between this European Standard and the requirements of Commission Delegated Regulation (EU) No 812/2013 of 18 February 20
22、13 supplementing Directive 2010/30/EU regarding energy labelling for water heaters and hot water storage tanks 30 Annex ZB (informative) Relationship between this European Standard and the requirements of Commission Regulation (EU) No 814/2013 of 2 August 2013 implementing Directive 2009/125/EC with
23、 regard to Ecodesign requirements for water heaters and hot water storage tanks 31 Bibliography . 32 DIN EN 12897:2016-12EN 12897:2016 (E) 4 European foreword This document (EN 12897:2016) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR.
24、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 December 2016, and conflicting national standards shall be withdrawn at the latest by December 2016. Attention is drawn to the possibility that some
25、 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 12897:2006. This document has been prepared under a mandate given to CEN by the European Commission and t
26、he European Free Trade Association, and supports essential requirements of Commission Delegated Regulation (EU) No 812/2013 and Commission Regulation (EU) No 814/2013. For relationship with EU Directives, see informative Annexes ZA and ZB which are an integral part of this document. In comparison wi
27、th EN 12897:2006, the following significant changes have been made: the capacity range extended from 1 000 l to 2 000 l; the maximum temperature reduced from 100 C to 95 C; revisions in durability testing for cylinders using expansion vessels or internal expansion space; provision is made in Annex A
28、 for the calculation of the V40hot water capacity; Annex B has been revised to improve the test methodology and bring the standing heat loss test requirements in line with those required by the EU directives for the Ecodesign and labelling of hot water storage tanks. According to the CEN/CENELEC Int
29、ernal 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,
30、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 12897:2016-12EN 12897:2016 (E) 5 Introduction In respect of potential adverse effects on the quality of water in
31、tended for human consumption caused by the product covered by this standard: a) This standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA. b) It should be noted that, while awaiting the adoption of the verifiable Eur
32、opean criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. DIN EN 12897:2016-12EN 12897:2016 (E) 6 1 Scope This European Standard specifies the constructional and performance requirements and methods of test for indirectly heated, unv
33、ented (closed) storage water heaters of up to 2 000 l volume suitable for connection to a water supply at a pressure between 0,05 MPa and 1,0 MPa (0,5 bar and 10 bar), and fitted with control and safety devices designed to prevent the temperature of the stored drinking water from reaching 95 C. Whil
34、st storage water heaters intended primarily for direct heating are not covered by this standard, it does allow the provision of electric heating elements for auxiliary use. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indisp
35、ensable 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 1487, Building valves Hydraulic safety groups Tests and requirements EN 1488, Building valves Expansion grou
36、ps Tests and requirements EN 1489, Building valves Pressure safety valves Tests and requirements EN 1490, Building valves Combined temperature and pressure relief valves Tests and requirements EN 1491, Building valves Expansion valves Tests and requirements EN 1567, Building valves Water pressure re
37、ducing valves and combination water pressure reducing valves Requirements and tests EN 1717, Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow EN 13203 (all parts), Gas-fired domestic appliances producing hot wat
38、er EN 13959, Anti-pollution check valves DN 6 to DN 250 inclusive family E, type A, B, C and D EN 15332:2007, Heating boilers Energy assessment of hot water storage systems EN 60379:2004, Methods for measuring the performance of electric storage water-heaters for household purposes (IEC 60379:1987)
39、EN 60730-2-9, Automatic electrical controls for household and similar use Part 2-9: Particular requirements for temperature sensing controls (IEC 60730-2-9) 3 Terms, definitions and symbols For the purposes of this document, the following terms, definitions and symbols apply. DIN EN 12897:2016-12EN
40、12897:2016 (E) 7 3.1 Terms and definitions 3.1.1 indirectly heated unvented (closed) storage water heater vessel complete with heat exchanger (primary heater) for heating and storage of drinking water where the contents are not vented to atmosphere 3.1.2 rated volume rated storage volume V volume of
41、 the water storage vessel in litres as specified in the manual 3.1.3 actual volume measured volume of the drinking water storage vessel in litres 3.1.4 water side part of the storage water heater directly in contact with the drinking water 3.1.5 heating side parts of the storage water heater which c
42、ontain the heating medium 3.1.6 maximum design pressure rated pressure maximum pressure to which the unvented storage water heater is designed to be subjected in use 3.1.7 maximum inlet pressure specified maximum cold water inlet pressure for the water heater 3.1.8 maximum safety temperature maximum
43、 temperature that the stored water can reach under a fault condition 3.1.9 maximum operating temperature maximum temperature that can be set for normal operation 3.1.10 primary heater heat exchanger system fitted to the hot water storage vessel through which a heating medium (such as water from a bo
44、iler) flows to heat the stored drinking water 3.1.11 double-walled primary heater primary heater with concentric walls such that any leak through one wall will not allow the heating fluid to contaminate the drinking water DIN EN 12897:2016-12EN 12897:2016 (E) 8 3.2 Symbols Symbol Unit Description p
45、C Average temperature of the water drawn off at (c+ 30) C V40l Mixed water quantity delivered at 40 C. c C Average temperature of inlet cold water during the test set C Target hot water temperature for hot water performance testing = c+ 50 K pri C Primary flow temperature = c+ 70 K w C Target temper
46、ature of stored water for heat loss testing e C Mean of all the differentials between wand measured ambient air temperature a C Measured ambient temperature at a given position Vhot l Volume of water drawn off at (c+ 30)C Qc kWh/24h Corrected 24 h heat loss Qst kWh/24h or W Declared standing heat lo
47、ss Qm kWh Power consumption meter reading t minutes Time taken to reheat the storage water heater from c tosetP kW Calculated heat exchanger performance 4 Requirements 4.1 Constructional requirements 4.1.1 Inspection access Unvented storage water heaters shall be provided with means for internal ins
48、pection (see Annex C). This can also be achieved by using a connection intended and dimensioned for another purpose where the use of a suitable inspection instrument such as an endoscope is acceptable. 4.1.2 Draining Unvented storage water heaters shall permit in situ draining. The method of drainin
49、g shall be given in the manufacturers instructions. 4.1.3 Hydraulic connections Hydraulic connections shall be of a type that allows the storage water heater to be disconnected from the pipework. 4.2 Temperature control The temperature of the stored drinking water shall be regulated either by control of the heat source or sources or by control of the water h
