1、June 2010 Translation by DIN-Sprachendienst.English price group 10No 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 1
2、3.060.20; 91.140.60!$iC“1700432www.din.deDDIN EN 15848Water conditioning equipment inside buildings Adjustable chemical dosing systems Requirements for performance, safety and testingEnglish translation of DIN EN 15848:2010-06Anlagen zur Behandlung von Trinkwasser innerhalb von Gebuden Einstellbare
3、Dosiersysteme Anforderungen an Ausfhrung, Sicherheit und PrfungEnglische bersetzung von DIN EN 15848:2010-06Appareils de traitement deau lintrieur des btiments Systmes de dosage chimique ajustables Exigences de performance, de scurit et essaisTraduction anglaise de DIN EN 15848:2010-06www.beuth.deDo
4、cument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.170 .10 5DIN EN 15848:2010-06 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretariat: AFNOR, France),
5、 Working Group WG 13 “Water conditioning equipment inside buildings” (Leadership: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Wasserwesen (Water Practice Standards Committee), Working Committee NA 119-04-17 AA Wasserbehandlung. In Germany, the Trink
6、wasserverordnung (TrinkwV2001) (German Drinking Water Ordinance) currently in force and the list of substances for treatment and disinfection of water in accordance with article 11 of the Trinkwasserverordnung 2001 are to be taken into account when using dosing systems for conditioning drinking wate
7、r inside buildings in accordance with this standard. These documents govern the following as regards the addition of active chemical substances for conditioning drinking water: - the use of the chemicals exclusively for this purpose; - the maximum permissible addition of chemicals; - the regular mon
8、itoring of chemical concentrations; - the legal obligation to inform the consumer of the addition of chemicals. Because the present standard does not sufficiently take these national requirements into consideration, the national mirror committee recommends that adjustable dosing systems as specified
9、 in this standard not be used in Germany. 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15848 February 2010 ICS 13.060.20; 91.140.60 English Version Water conditioning equipment inside buildings - Adjustable chemical dosing systems - Requirements for performance, safety and testing Appareil
10、s de traitement deau lintrieur des btiments - Systmes de dosage chimique ajustables - Exigences de performance, de scurit et essais Anlagen zur Behandlung von Trinkwasser innerhalb von Gebuden - Einstellbare Dosiersysteme - Anforderungen an Ausfhrung, Sicherheit und Prfung This European Standard was
11、 approved by CEN on 9 January 2010. 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 nat
12、ional standards may be obtained on application to the CEN 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
13、 notified to the CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
14、Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All
15、 rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15848:2010: EEN 15848:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Design requirements .54.1 General 54.2 Dosing system components .54.3 Ma
16、terials of construction 54.4 Venting 54.5 Radio interference and electrical safety 54.6 Accessibility .54.7 Nominal size .54.8 Manual mode 65 Performance requirements .65.1 Chemicals .65.2 Dosing system components .65.3 Protection against overdosing .75.4 Working temperature range 75.5 Pressure cond
17、itions 76 Testing 86.1 General 86.2 Operating characteristics .86.3 Pressure test . 107 Labelling 10Annex A (normative) Installation, operation and maintenance . 11Bibliography . 15DIN EN 15848:2010-06 EN 15848:2010 (E) 3 Foreword This document (EN 15848:2010) has been prepared by Technical Committe
18、e CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. 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 August 2010, and conflicting national standards shall be withdrawn at the la
19、test by August 2010. 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. NOTE Products intended for use in water supply systems should com
20、ply, when existing, with national regulations and testing arrangements that ensure fitness for contact with drinking water. On April 2006, EC Commission set up a revised mandate (M/136) asking CEN to propose harmonised product standards and support standards for test methods which could be used for
21、assessing the fitness for contact with drinking water. In parallel, EC Commission has launched processes for a regulation of construction products (CPR) to be substituted to CP directive (89/106/EC) and for the revision of drinking water directive (98/83/EC). If relevant, when the outputs of these p
22、rocesses are known, European product standards will be amended by the addition of an Annex Z under Mandate M136 which will contain formal references to the applicable requirements. Until such amendments, the current national regulations remain applicable. According to the CEN/CENELEC Internal Regula
23、tions, 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malt
24、a, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 15848:2010-06 EN 15848:2010 (E) 4 1 Scope This European Standard specifies definitions, principles of construction (but not dimensions) and design, requirements on perform
25、ance and operation as well as methods for testing the performance of adjustable chemical dosing systems for conditioning water intended for human consumption inside buildings (see 1) which are permanently connected to the mains supply. The concentration in the treated water of the active chemical(s)
26、 as well as of any other ingredient or minor component (including possible contaminants) should not exceed the parametric values laid down in the existing legislation in the Member States for the water intended for the human consumption, as implemented by the national authorities. 2 Normative refere
27、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 55011, Industrial, scientific and medical
28、 (ISM) radio-frequency equipment Electromagnetic disturbance characteristics Limits and methods of measurement (CISPR 11:2003 + A1:2004, modified) EN 60204-1, Safety of machinery Electrical equipment of machines Part 1: General requirements (IEC 60204-1:2005, modified) EN 60335-1, Household and simi
29、lar electrical appliances Safety Part 1: General requirements (IEC 60335-1:2001, modified) EN 60335-2-41, Household and similar electrical appliances Safety Part 2-41: Particular requirements for pumps (IEC 60335-2-41:2002) EN ISO 12100-1, Safety of machinery Basic concepts, general principles for d
30、esign Part 1: Basic terminology, methodology (ISO 12100-1:2003) 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 of this document, the following terms and definitions apply. 3.1
31、adjustable dosing system device used for the controlled addition of chemicals in concentrations that can be adjusted on the installation site 3.2 working range range of treated water flow rates between which the dosing system provides the required accuracy of concentration of the chemicals within li
32、mits of concentration and pressure drop prescribed by the manufacturer. NOTE The working range covers the range between the upper and lower working limits. 3.3 dosing agent active chemical substance for conditioning water intended for human consumption DIN EN 15848:2010-06 EN 15848:2010 (E) 5 4 Desi
33、gn requirements 4.1 General The dosing system shall function to maintain a specific concentration of the chemical in the treated water. 4.2 Dosing system components A dosing system comprises the following elements: a) storage tank or chemical container which contains the chemical as a liquid that wi
34、ll be dosed into the water pipe; b) suction device which comprises a suction hose and a foot valve; c) low level detection avoiding the pump to work when storage is empty; d) dosing pump that pumps the chemical as a liquid from the storage tank or container and doses it into the main water flow; e)
35、overpressure valve as safety apparatus to avoid overpressure in the injection device; f) injection device which comprises the hose between the pump and the mains, the injection valve and the backflow preventer; g) water meter in the main water flow which transmits a control signal to the dosing pump
36、. 4.3 Materials of construction Parts in contact with drinking water shall comply with national regulations. The temperature resistance of the injection system shall be specified. 4.4 Venting The dosing system shall be designed so that accumulation of air or other gases is prevented. Compliance with
37、 this requirement shall be checked by examination of the detailed technical design documents supplied with the system. 4.5 Radio interference and electrical safety The dosing system shall conform to EN 12100-1, EN 12100-2, EN 55011, EN 60204-1, EN 60335-1 and EN 60335-2-41, following the provisions
38、of Directive 89/336/EEC 2 and Directive 73/23/EEC 3. 4.6 Accessibility All parts which have to be accessed for replenishing of the dosing agent and for operation or servicing shall be easily accessible. 4.7 Nominal size If the dosing pump is controlled by signals from a water meter, the nominal size
39、 of its connection shall correspond to the flow rates given in Table 1. The inlet connection size of the water meter may be one size larger or smaller than the nominal size. For flange connections, the inlet flange shall conform to the nominal size. DIN EN 15848:2010-06 EN 15848:2010 (E) 6 Table 1 U
40、pper limit flow rate values Nominal size DN of water meter 15 20 25 32 40 50 65 80 100 Upper limit of flow rate l/s 0,35 0,63 1,0 1,6 2,53 3,89 6,67 10 15,56m3/h 1,27 2,27 3,6 5,8 9,1 14 24 36 56 NOTE These flow rates correspond to a velocity of approximately 2 m/s. 4.8 Manual mode The dosing system
41、 shall have an indication when a manual mode is activated, for example, for maintenance. 5 Performance requirements 5.1 Chemicals The documentation shall define which chemicals are compatible with the dosing system and at which maximum concentration. All the dosed chemicals shall conform to the rele
42、vant European Standards. 5.2 Dosing system components 5.2.1 Storage tank or chemical container Materials selected for the manufacture of the dosing tank shall protect the contents against contamination or degradation by corrosion, light, dust, particles or any external pollutant. The design of the c
43、onnection between the dosing tank and the dosing pump shall exclude any accidental contamination of the contents during either normal operation or chemical replacement; leakage of the chemical to the external environment of the system. The normal working capacity of the chemical storage tank or cont
44、ainer shall not exceed three months based on the minimum dosing rate for the designated chemical. 5.2.2 Suction device The suction device shall have a backflow preventer. 5.2.3 Low level detection The low level detection shall as a minimum stop the pump when the storage is empty. 5.2.4 Dosing pump T
45、he manufacturer shall specify the dosing pump operating characteristics (maximum volume per stroke at maximum and medium specified operating pressure), all of which shall be tested separately. Measurements shall be carried out in accordance with to 6.2. Parameters are given in Table 2. DIN EN 15848:
46、2010-06 EN 15848:2010 (E) 7 Table 2 Test parameters Stroke length of dosing pump (%) 30 60 100 Operating pressure (MPa) Maximum specified operating pressure Medium specified operating pressure 5.2.5 Overpressure valve Overpressure valves are meant to avoid damage of the connection between the pump a
47、nd the injecting point, if applicable. 5.2.6 Injection device Injection devices shall be designed such that backflow of drinking water into the storage tank or chemical container is prevented. 5.2.7 Water meter Water meters shall comply with the relevant European Standards. 5.3 Protection against ov
48、erdosing Dosing systems shall be designed so that overdosing due to siphonic action or gravity flow into the drinking water supply cannot occur under any operating conditions. It shall be made sure with suitable techniques that setting parameters cannot be changed unauthorised or mistakenly, or be e
49、xceeded. 5.4 Working temperature range The maximum temperature shall be at least 30 C for the water and the ambient air, in which the dosing system including accessories and fittings shall operate correctly. 5.5 Pressure conditions 5.5.1 Nominal pressure and working pressure range The manufacturer shall specify the minimum and maximum working pressures between which the dosing system including accessories and fitti
