DIN EN 834-2017 Heat cost allocators for the determination of the consumption of room heating radiators - Appliances with electrical energy supply German version EN 834 2013 + AC 2.pdf

1、 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 91.140.10!%_z“2608795www.din.deDIN EN 834Hea

2、t cost allocators for the determination of the consumption of room heating radiators Appliances with electrical energy supply;English version EN 834:2013 + AC:2015,English translation of DIN EN 834:2017-02Heizkostenverteiler fr die Verbrauchserfassung von Raumheizflchen Gerte mit elektrischer Energi

3、eversorgung;Englische Fassung EN 834:2013 + AC:2015,Englische bersetzung von DIN EN 834:2017-02Rpartiteurs de frais de chauffage pour dterminer la consommation des corps de chauffe Appareils dots dune alimentation en nergie lectrique;Version anglaise EN 834:2013 + AC:2015,Traduction anglaise de DIN

4、EN 834:2017-02SupersedesDIN EN 834:201312www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.February 2017Document comprises 34 pages 02.17 DIN EN 834:2017-02 2 A comma is used as the decimal marker. National foreword This d

5、ocument (EN 834:2013+AC:2015) has been prepared by Technical Committee CEN/TC 171 “Heat cost allocation” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Heiz- und Raumlufttechnik (DIN Standards Committee Heating and Ventilation Technology)

6、, Working Committee NA 041-03-04 AA Heizkostenverteiler (SpA CEN/TC 171). The Corrigendum EN 834:2013/AC:2015 has been incorporated in this standard and indicated in the text by tags nullnull.Amendments This standard differs from DIN EN 834:1994-11 as follows: a) definitions, requirements and test p

7、rocedures have been rendered more precise and expanded; b) new values have been introduced for the lower temperature limit; c) the mounting location of heat cost allocators on the radiator has been uniformly defined. Compared with DIN EN 834:2013-12, the following correction has been made: d) Figure

8、 1 has been corrected. Previous editions DIN 4713-3: 1980-12, 1989-01 DIN 4714-3: 1980-12 DIN EN 834: 1994-11, 2013-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 834 August 2013 + AC April 2015 ICS 91.140.10 Supersedes EN 834:1994 English Version Heat cost allocators for the determination

9、of the consumption of room heating radiators Appliances with electrical energy supply Rpartiteurs de frais de chauffage pour dterminer la consommation des corps de chauffe Appareils dots dune alimentation en nergie lectrique Heizkostenverteiler fr die Verbrauchserfassung von Raumheizflchen Gerte mit

10、 elektrischer Energieversorgung EN 834:2013 was approved by CEN on 2012-12-28 and Corrigendum AC:2015 on 2015-04-22. 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 an

11、y 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 langua

12、ge 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,

13、 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

14、 STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 834:2013 + AC:2015 E Contents Page Foreword 4

15、Introduction .5 1 Scope 5 2 Normative references 6 3 Terms and definitions .6 4 Functional principle and measurement methods 11 5 General specifications . 12 5.1 Base condition 12 5.2 c-value 13 5.3 Rating factors 13 5.4 Calendar function . 14 6 Requirements for heat cost allocators . 15 6.1 Require

16、ments concerning temperature stress 15 6.2 Storage temperature . 15 6.3 Start of counting . 15 6.4 Idle counting rate 15 6.5 Temperature sensors . 15 6.6 Calculator/central processing unit 16 6.7 Auxiliary power supply 16 6.8 Overflow of the display 16 6.9 Display resolution . 16 6.10 Functional che

17、ck. 16 6.11 Limits of relative display deviation . 17 6.12 Ageing 17 6.13 Electrical, electrostatic and magnetic influences . 17 6.14 Thermal impact on heat cost allocators operating in accordance with the single-sensor measurement method 17 6.15 Thermal impact on heat cost allocators operating in a

18、ccordance with the two-sensor measurement method 17 6.16 Thermal impact on other devices or components 18 6.17 Impact on transmission systems 18 6.18 Sealing . 18 6.19 Calendar function . 18 6.20 Taking into account operating conditions . 18 7 Requirements for use and installation . 19 7.1 Temperatu

19、re limits 19 7.2 Attachment of the sensors 19 7.3 Attachment position of the sensors . 20 7.4 Connecting cable installation 20 7.5 Uniformity of heat cost allocators . 20 8 Rating requirements . 21 8.1 Rating factor KQ21 8.2 Rating factor KC21 8.3 Rating factor KT21 8.4 Resulting rating factor K 21

20、8.5 c-value 21 2 EN 834:2013 + AC:2015 (E) DIN EN 834:2017-02 9 Requirements for maintenance and reading 22 9.1 Visual reading 22 9.2 Close-range reading 22 9.3 Remote reading . 22 10 Testing 22 10.1 General . 22 10.2 Test documents . 23 10.3 Test report 23 10.4 Test protocols 23 11 Test procedures

21、. 23 11.1 Construction test . 23 11.2 Sealing test 23 11.3 Temperature durability test 23 11.4 Test for compliance with the limits of the relative display deviation 24 11.5 Ageing resistance test 24 11.6 Test of the start of counting at normal operation and also, for heat cost allocators with room t

22、emperature sensors, at operation with thermal impact . 24 11.7 Test of the idle counting rate . 25 11.8 Test of the counting rate in the case of thermal impact 25 11.9 Test for external influences 26 11.10 Test of c-values, procedure 26 11.11 Test of c-values, scope of testing 26 11.12 Test of ratin

23、g factor KQ. 26 11.13 Test of rating factor KC. 27 12 Marking . 27 Annex A (informative) Information and recommendations 28 A.1 General . 28 A.2 Heating systems 28 A.3 Recommended field of application 28 A.4 Heat emission not controllable by the consumer 29 A.5 Additional corrections 29 A.6 Document

24、ation of the relationship between the counting rate and the thermal output 30 Bibliography 32 3 EN 834:2013 + AC:2015 (E) DIN EN 834:2017-02 EN 834:2013 + AC:2015 (E) 4 Foreword This document (EN 834:2013 + AC:2015) has been prepared by Technical Committee CEN/TC 171 “Heat cost allocation”, the secr

25、etariat of which is held by DIN. 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 February 2014, and conflicting national standards shall be withdrawn at the latest by February 2014. Attention is d

26、rawn 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 834:1994 Amendments Compared to EN 834:1994, the following changes were

27、made: a) Definitions, requirements and test procedures have been refined and expanded, b) Introduction of new values for the lower temperature limit, c) Uniform definition for the mounting location of heat cost allocators on the radiator. According to the CEN/CENELEC Internal Regulations, the nation

28、al 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, Lithu

29、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 834:2017-02 Introduction This document deals with heat cost allocators with electrical power supply used for establishing the consumption val

30、ue of room heating surfaces. It specifies the minimum requirements for the construction, materials, production, installation, function and evaluation of the displayed readings established by these measuring devices. This document describes test procedures to establish compliance with the stated requ

31、irements and specifies instructions for their nature and scope. 1 Scope NOTE See Clause 3 for a definition of the terms used below. This European standard applies to heat cost allocators which are used to capture the proportionate thermal output of radiators in consumer units. If an account unit com

32、prises consumer units of different types (e.g. technically different types of heating systems or differences due to the consumer behaviour, e.g. industrial plants as opposed to private apartments), it could be necessary to divide this account unit into groups of users. Heat cost allocators enable th

33、e determination of the heat consumption only of each radiator in a consumer unit as a share of the total heat consumption of the account unit or user group (see Clause 4); it is therefore necessary to determine this total heat consumption either by measuring the consumed fuel quantity or the amount

34、of heat delivered (the latter by means of a heat meter, for example). For the appropriate use of the heat cost allocators in accordance with this standard, the heating system needs to: correspond to the state of the art at the time of installation of the heat cost allocators; be operated in accordan

35、ce with the state of the art (see A.2). This standard specifies that heat cost allocators shall not be used for heating systems where the temperature of the heating system falls below or exceeds the temperature limits of the heat cost allocators, where the rating factor for the thermal output, KQ, c

36、annot be clearly specified or where the heating surface is inaccessible. This applies usually to the following heating systems: floor heating; radiant ceiling heating; flap-controlled radiators; radiators with ventilators; fan-assisted air heaters; heating systems with steam-operated radiators. 5 EN

37、 834:2013 + AC:2015 (E) DIN EN 834:2017-02 2 Normative references Not applicable. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 heat cost allocator instrument for registration of the proportionate thermal output of radiators in consumer uni

38、ts 3.2 heat cost allocation system overall system, as verified by an inspection authority, consisting of a heat cost allocator, installation equipment, installation instructions, rating system, existing rating factors, maintenance and reading instructions 3.3 measurement method physical principle of

39、 measurement in combination with fundamental properties of the appliance type Note 1 to the term: For heat cost allocators in accordance with this standard, the fundamental property of the appliance type characterizing the method is the number of measuring sensors for registering the relevant temper

40、atures. The physical principle of measurement which is applied preferably is the temperature dependency of electrical components. 3.4 consumer unit dwellings, office, business or industrial premises in which the heat is supplied by a common central heating system or by a common district heating conn

41、ection 3.5 account unit total of all consumer units 3.6 user group group of consumer units within one account unit, each with a uniform heating system and comparable type of use 3.7 mean heating medium temperature tm mean value of the flow and return temperatures of the heating medium Note 1 to the

42、term: In this standard, tmis determined by adding up the logarithmic heating medium excess temperature, tln, (formula (2), see 5.2) and the reference air temperature, tL. 3.8 heating medium excess temperature t temperature difference between the mean heating medium temperature and the reference air

43、temperature Note 1 to the term: In this standard, the heating medium excess temperature (abbreviated as “excess temperature“) is determined as the logarithmic excess temperature tlnin accordance with formula (2) (see 5.2). 6 EN 834:2013 + AC:2015 (E) DIN EN 834:2017-02 3.9 design flow temperature tV

44、,Avalue of the flow temperature of the radiators required in order to reach the design indoor temperature in the heated rooms under steady state conditions at a heat load corresponding to a geographically determined design reference outside temperature 3.10 design return temperature tR,Avalue of the

45、 return temperature of the radiators required in order to reach the design indoor temperature in the heated rooms under steady state conditions at a heat load corresponding to a geographically determined design reference outside temperature 3.11 mean design heating medium temperature tm,Amean value

46、of the design flow temperature and the design return temperature Note 1 to the term: In this standard, tm,Ais determined by adding up the logarithmic mean value of the design excess temperature and the basic reference air temperature of 20 C in accordance with formula (2) (see 5.2). 3.12 base condit

47、ion radiator operating condition which is freely selectable within predefined limits and which is used for specifying the rating factors and for determining the c-values 3.13 basic reference air temperature tL,Bvalue of the air temperature at base condition Note 1 to the term: For tL,Bthe specified

48、target value is 20 C, see 5.1. 3.14 reference air temperature tL actual value of the air temperature while requirements are specified and measurements are carried out 3.15 heating medium base flow medium flow through the radiator at base condition 3.16 temperature sensors sensors consisting of a sen

49、sor element and a sensor casing, which generate a temperature-dependent signal Note 1 to the term: The sensor casing serves both to transfer heat and to protect the sensor element from mechanical influences. 3.17 measuring range of temperature sensors temperature range within which temperature sensors can be used Note 1 to the term: For pairs of temperature sensors which are used for the determination of temperature differences, in addition to the measuri