EN 14812:2005+A1:2007

Water conditioning equipment inside buildings - Chemical dosing systems - Pre-set dosing systems - Requirements for performance, safety and testing

This European Standard specifies definitions, principles of construction (but not dimensions) and design, requirements on performance and operation as well as methods for testing the performance of chemical pre-set dosing systems for conditioning water intended for human consumption inside buildings (see [7]) which are permanently connected to the mains supply

Anlagen zur Behandlung von Trinkwasser innerhalb von Gebäuden - Dosiersysteme - Nicht einstellbare Dosiersysteme - Anforderungen an Ausführung, Sicherheit und Prüfung

Diese Europäische Norm legt Begriffe, Grundsätze zur Konstruktion (jedoch keine Maße) und Gestaltung, Anforderungen an die Funktion und den Betrieb sowie Verfahren zur Prüfung der Leistungsanforderungen von Dosiersystemen innerhalb von Gebäuden (siehe [8]) zur Behandlung von Wasser, das für den menschlichen Gebrauch bestimmt ist, fest, die fest am Eintrittspunkt des Wassers in die Hausinstallation angeschlossen sind.

Appareils de traitement d'eau à l'intérieur des bâtiments - Systèmes de dosage de réactifs chimiques - Systèmes de dosage non ajustables - Exigences de performance, de sécurité et essais

La présente Norme européenne spécifie les définitions, les principes de conception et de construction (mais pas les dimensions), les exigences relatives aux performances et au fonctionnement ainsi que les méthodes d’essai applicables aux systèmes de dosage de réactifs chimiques utilisés pour le traitement de l’eau destinée à la consommation humaine à l’intérieur des bâtiments (voir ![8]"), et qui sont reliés en permanence au réseau.

Oprema, ki se uporablja za pripravo pitne vode v stavbah - Naprave za doziranje kemikalij – Prednastavljivi dozirni sistemi – Zahteve za delovanje, varnost in preskušanje

General Information

• Status: Published
• Publication Date: 12-Jun-2007
• Withdrawal Date: 30-Dec-2007
• ICS: 13.060.20 - Drinking water
• ICS: 91.140.60 - Water supply systems
• Technical Committee: CEN/TC 164 - Water supply
• Drafting Committee: CEN/TC 164/WG 13 - Water conditioning equipment inside buildings
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Sep-2021
• Completion Date: 02-Sep-2021
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Directive: 98/83/EC - Quality of water intended for human consumption
• Ref Project: SIST EN 14812:2006+A1:2007 - Water conditioning equipment inside buildings - Chemical dosing systems - Pre-set dosing systems - Requirements for performance, safety and testing

Relations

• Merged From: EN 14812:2005 - Water conditioning equipment inside buildings - Chemical dosing systems -Pre-set dosing systems- Requirements for performance, safety and testing
• Effective Date: 22-Dec-2008

Overview

EN 14812:2005+A1:2007 (CEN) covers pre-set chemical dosing systems used for conditioning water intended for human consumption inside buildings. It specifies definitions, design principles (not dimensions), performance and safety requirements, and test methods for dosing units that are permanently connected to the mains supply. The standard applies specifically to non‑adjustable (pre‑set) dosing systems and the proprietary chemicals supplied with them.

Key topics and requirements

• Scope & terms: Definitions for pre-set dosing systems, dosing agents, working range, dosing volume per recharge and proprietary chemical.
• Design requirements:
  • Materials of construction suitable for contact with drinking water and protection of dosing agent containers against light.
  • Connections and venting to avoid air accumulation and ensure dosing accuracy.
  • Accessibility for replacement of dosing containers without disconnecting pipework; protection against unauthorised actuation.
  • Labelling and product information required on the device and dosing containers.
• Performance requirements:
  • Dosing accuracy and working ranges (upper/lower limits of treated flow). Example nominal sizes DN15–DN100 with corresponding upper flow limits (e.g. DN15 = 0.35 l/s / 1.27 m3/h up to DN100 = 15.56 l/s / 56 m3/h).
  • Protection against backflow of proprietary chemicals into the supply.
  • Pressure and temperature operating ranges and resistance to pressure variations, pressure drop and water hammer.
• Testing methods:
  • Test rig and sampling procedures for verifying dosing accuracy and chemical analysis.
  • Methods for evaluating working ranges, backflow protection and pressure performance.
• Electrical & EMC safety: Conformance with referenced standards and EU directives (e.g., EN 60335‑2‑41, EN 60730‑2‑8, radio‑interference and electrical safety requirements).

Applications and who uses it

• Manufacturers of chemical dosing units for drinking water to design, certify and label pre‑set dosing systems.
• Building services engineers & system designers specifying dosing equipment for potable water conditioning (e.g., chlorination, pH adjustment, corrosion control).
• Water utilities, facility managers and installers selecting, installing and maintaining dosing systems inside buildings permanently connected to mains.
• Testing and certification laboratories performing performance, safety and backflow tests in accordance with the standard.
• Regulators referencing harmonized performance and safety requirements for equipment used on drinking water installations.

Related standards

• EN 806‑2 (building water installation design)
• EN 1267 (flow resistance testing)
• EN 60335‑2‑41 (safety - pumps)
• EN 60730‑2‑8 (automatic electrical controls)
• EMC and electrical equipment safety standards referenced in the normative list

Keywords: EN 14812, chemical dosing systems, pre-set dosing systems, water conditioning, drinking water, dosing accuracy, backflow protection, performance testing, CEN.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Water conditioning equipment inside buildings - Chemical dosing systems - Pre-set dosing systems - Requirements for performance, safety and testingOprema, ki se uporablja za pripravo pitne vode v stavbah - Naprave za doziranje kemikalij – Prednastavljivi dozirni sistemi – Zahteve za delovanje, varnost in preskušanjeAppareils de traitement d'eau a l'intérieur des bâtiments - Systemes de dosage de réactifs chimiques - Systemes de dosage non ajustables - Exigences de performance, de sécurité et essaisAnlagen zur Behandlung von Trinkwasser innerhalb von Gebäuden - Dosiersysteme - Nicht einstellbare Dosiersysteme - Anforderungen an Ausführung, Sicherheit und PrüfungTa slovenski standard je istoveten z:EN 14812:2005+A1:2007SIST EN 14812:2006+A1:2007en,fr,de91.140.60Sistemi za oskrbo z vodoWater supply systems13.060.20Pitna vodaDrinking waterICS:SLOVENSKI
STANDARDSIST EN 14812:2006+A1:200701-september-2007

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14812:2005+A1
June 2007 ICS 13.060.20; 91.140.60 SupersedesEN 14812:2005English Version
Water conditioning equipment inside buildings -Chemical dosing systems - Pre-set dosing systems - Requirements for performance, safety and testing
Appareils de traitement d'eau à l'intérieur des bâtiments - Systèmes de dosage de réactifs chimiques - Systèmes de dosage non ajustables - Exigences de performance, de sécurité et essais
Anlagen zur Behandlung von Trinkwasser innerhalb von Gebäuden - Dosiersysteme - Nicht einstellbare Dosiersysteme - Anforderungen an Ausführung, Sicherheit und Prüfung This European Standard was approved by CEN on 26 August 2005 and includes Amendment 1 approved by CEN on 10 May 2007.
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 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14812:2005+A1:2007: E

Examples of connections.15 Annex B (normative)
!Installation, operation and maintenance.16 Bibliography.20

methods of measurement (CISPR 11:1997, modified EN 60204-1, Safety of machinery – Electrical equipment of machines – Part 1: General requirements (IEC 60204-1:1997) EN 60335-11, Household and similar 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 60730-2-8:2002, Automatic electrical controls for household and similar use — Part 2-8: Particular requirements for electrically operated water valves, including mechanical requirements (IEC 60730-2- 8:2000, modified) EN ISO 10304-1, Water quality – Determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulphate ions, using liquid chromatography of ions – Part 1: Method for water with low contamination (ISO 10304-1:1992) EN ISO 10304-2, Water quality – Determination of dissolved anions by liquid chromatography of ions – Part 2: Determination of bromide, chloride, nitrate, nitrite, orthophosphate and sulfate in waste water (ISO 10304-2:1995) EN ISO 10304-3, Water quality – Determination of dissolved anions by liquid chromatography of ions – Part 3: Determination of chromate, iodide, sulphite, thiocyanate and thiosulfate (ISO 10304-3:1997) EN ISO 10304-4, Water quality – Determination of dissolved anions by liquid chromatography of ions – Part 4: Determination of chlorate, chloride and chlorite in water with low contamination (ISO 10304-4:1997) EN ISO 11885, Water quality – Determination of 33 elements by inductively coupled plasma atomic emission spectroscopy (ISO 11885:1996) EN ISO 12100-1, Safety of machinery – Basic concepts, general principles for design – Part 1: Basic terminology, methodology (ISO 12100-1:2003)
1 Observe transition period for EN 60335-1(1994) ending 2008-07-01.

EN ISO 12100-2, EN 60204-1, EN 60335-1 and EN 60335-2-41, following the provisions of Directive 89/336/EEC and Directive 73/23/EEC (see ![9], [10]"). 4.5 Dosing agent containers Materials selected for the manufacture of dosing agent containers shall protect the contents against harmful effects of light. The design of the connection between the dosing agent container and the dosing apparatus shall exclude any accidental contamination of the contents during either normal operation or change of the container. NOTE The size of the dosing agent container – or the recharge volume, if a solid type of dosing agent is used – should be calculated so that a replacement becomes necessary after not more than six months. 4.6 Accessibility All parts which have to be actuated for replacing of the dosing agent container and for operation and control shall be easily accessible. It shall be possible to protect them against unauthorised actuation, for example by means of special tools, seals or locks. Renewal of the dosing material shall be carried out only by replacing by a ready-made container filled with proprietary chemical. Replacement of the dosing agent container shall be possible without having to disconnect the dosing apparatus from the connecting pipework. 4.7 Nominal size The nominal size of system connection shall correspond to the flow rates given in Table 1. The inlet connection size of the dosing device may be one size larger or smaller than the nominal size. For flange connections, the inlet flange shall conform to nominal size. Table 1 — Flow rate values at upper limit of working range Nominal size DN 15 20 25 32 40 50 65 80 100 Upper limit of working range flow rate QN 0,35 0,63 1,0 1,6 2,53 3,89 6,67 10 15,56 l/s
Upper limit of working range flow rate QN
1,27 2,27 3,6 5,8 9,1 14 24 36 56 m3/h
NOTE
These flow rates correspond to a velocity of approximately 2 m/s.
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