EN 14743:2005+A1:2007
(Main)Water conditioning equipment inside buildings - Softeners - Requirements for performance, safety and testing
Water conditioning equipment inside buildings - Softeners - Requirements for performance, safety and testing
This European Standard specifies requirements relating to the construction and mode of operation and relevant methods of testing of automatic, salt-regenerated, cation exchange softeners for drinking water installations inside buildings which are permanently connected to the mains supply.
Until EAS comes into force, the current national regulations remain applicable.
NOTE Products intended for use in water supply systems should comply, when existing, with national regulations and testing arrangements that ensure fitness for contact with drinking water. The Member States relevant regulators and the EC Commission agreed on the principle of a future unique European Acceptance Scheme (EAS) which would provide a common testing and approval arrangement at European level.
If and when the EAS is adopted, European Standards on products will be amended by the addition of an Annex Z/EAS under Mandate M/136 which will contain formal references to the testing, certification and product marking requirements of the EAS.
Anlagen zur Behandlung von Trinkwasser innerhalb von Gebäuden - Enthärter - Anforderungen an Ausführung, Sicherheit und Prüfung
Diese Europäische Norm legt Anforderungen hinsichtlich der Konstruktion und der Betriebsart sowie entsprechende Prüfverfahren an automatische, mit Salz regenerierte und nach dem Prinzip des
Kationaustausches wirkende Enthärter für Trinkwasser-Installationen in Gebäuden, die dauerhaft an die Wasserversorgung angeschlossen sind, fest.
Bis das EAS-System in Kraft tritt, haben die derzeitigen nationalen Bestimmungen weiterhin Bestand.
ANMERKUNG Produkte für die Verwendung in Wasserversorgungssystemen müssensollten, so weit vorhanden, die nationalen Bestimmungen und Prüfanordnungen erfüllen, die ihre Eignung für den Kontakt mit Trinkwasser bestätigen. Die für die Mitgliedstaaten zuständigen Behörden und die EU-Kommission haben sich auf die Prinzipien eines zukünftigen einheitlichen Europäischen Zulassungssystems (EAS) geeinigt, welches eine gemeinsame Prüf- und Zulassungsregelung auf europäischer Basis bietet.
Falls und sobald EAS eingeführt ist, werden die Europäischen Produktnormen um einen Anhang Z/EAS unter dem Mandat M/136 ergänzt, in welchem formale Verweise auf die Anforderungen für die Prüfung, die Zertifizierung und die Produktkennzeichnung im Rahmen des EAS gegeben werden.
Appareils de traitement d'eau à l'intérieur des bâtiments - Adoucisseurs - Exigences de performance, de sécurité et essais
La présente Norme européenne spécifie les exigences relatives à la construction, au mode de fonctionnement et aux méthodes d’essai correspondantes des adoucisseurs automatiques, échangeurs de cations, à sel régénérant, destinés à des installations d’alimentation en eau potable à l’intérieur des bâtiments et raccordés en permanence à l’alimentation principale.
Les réglementations nationales actuelles restent applicables tant que le Système européen d’acceptation (SEA) n’est pas entré en vigueur.
NOTE Il convient que les produits destinés à un usage dans des systèmes d’alimentation en eau soient conformes, le cas échéant, aux réglementations nationales et aux montages d’essai qui assurent l’aptitude au contact avec l’eau potable. Les organismes de réglementation concernés des États membres et la Commission des communautés européennes se sont mis d’accord sur le principe d’un futur SEA unique définissant des montages d’essai et de validation communs au niveau européen.
À partir de l’adoption du SEA, le cas échéant, les Normes européennes relatives aux produits seront amendées par l’ajout de l’Annexe Z/SEA sous le mandat M/136 qui comportera les références formelles des exigences du SEA en matière d’essais, de certification et de marquage du produit.
Oprema, ki se uporablja za pripravo pitne vode v stavbah - Mehčalci - Zahteve za delovanje, varnost in preskušanje
General Information
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Overview
EN 14743:2005+A1:2007 is a European Standard from CEN that defines requirements for automatic, salt‑regenerated, cation exchange softeners used inside buildings and permanently connected to the mains supply. The standard covers construction, mode of operation, required performance and safety features, and the relevant test methods used to verify compliance. Until a future European Acceptance Scheme (EAS) is adopted, national regulations and testing arrangements remain applicable.
Key topics and requirements
The standard addresses technical and safety aspects including:
- Materials and chemicals
- Requirements for cation exchange resin quality and regenerating salt (reference to EN 973).
- Design and manufacturing
- Mechanical strength and resistance to hydrostatic and cyclic pressure.
- Operating range (temperature, pressure, flow) and electrical safety (alignment with EN 60335‑1).
- Salt tank design, continuity of supply during regeneration (including duplex systems), protection against backflow and brine infiltration (reference to EN 1717).
- Noise limits, air venting, end and drain connections.
- Operating performance
- Initiation of regeneration (timing/monitoring devices), brining efficiency (g CaCO3 per kg salt), salt consumption, regeneration water volume, exchange capacity, residual hardness and pressure drop.
- Definition of nominal flow rate (flow producing a max 100 kPa pressure drop).
- Testing and documentation
- Standardized test rig conditions, water/salt specifications, analytical methods and manufacturing tests (hydrostatic, cyclic, continuity, backflow protection, air displacement).
- Labelling, safety information and required technical documentation.
- Installation, operation and maintenance
- Normative Annex A includes guidance for correct installation and upkeep.
Applications and practical value
EN 14743 is intended for use where reliable softening of drinking water inside buildings is required. Practical applications include:
- Domestic and multi‑dwelling water softening systems
- Commercial buildings (hotels, laundries, hospitals) requiring scale control
- Design and factory production of softeners and control valves
- Type-testing and product certification for market access in CEN member states
- Installation, commissioning and maintenance protocols for plumbing contractors and building services engineers
Who should use this standard
- Manufacturers of water softeners and control valves
- Test laboratories and conformity assessment bodies
- Specifiers, consulting engineers and architects
- Plumbing contractors, building services installers and maintenance teams
- Regulators and water utilities assessing product fitness for contact with drinking water
Related standards (normative references)
Key referenced standards include EN 973, EN 1717, EN 60335‑1, EN ISO 228‑1, EN ISO 3822‑1/‑3, EN ISO 10304‑1, EN ISO 11885 and ISO 7‑1.
Using EN 14743 helps ensure safe, tested and documented water conditioning equipment that meets European expectations for performance, safety and serviceability.
Frequently Asked Questions
EN 14743:2005+A1:2007 is a standard published by the European Committee for Standardization (CEN). Its full title is "Water conditioning equipment inside buildings - Softeners - Requirements for performance, safety and testing". This standard covers: This European Standard specifies requirements relating to the construction and mode of operation and relevant methods of testing of automatic, salt-regenerated, cation exchange softeners for drinking water installations inside buildings which are permanently connected to the mains supply. Until EAS comes into force, the current national regulations remain applicable. NOTE Products intended for use in water supply systems should comply, when existing, with national regulations and testing arrangements that ensure fitness for contact with drinking water. The Member States relevant regulators and the EC Commission agreed on the principle of a future unique European Acceptance Scheme (EAS) which would provide a common testing and approval arrangement at European level. If and when the EAS is adopted, European Standards on products will be amended by the addition of an Annex Z/EAS under Mandate M/136 which will contain formal references to the testing, certification and product marking requirements of the EAS.
This European Standard specifies requirements relating to the construction and mode of operation and relevant methods of testing of automatic, salt-regenerated, cation exchange softeners for drinking water installations inside buildings which are permanently connected to the mains supply. Until EAS comes into force, the current national regulations remain applicable. NOTE Products intended for use in water supply systems should comply, when existing, with national regulations and testing arrangements that ensure fitness for contact with drinking water. The Member States relevant regulators and the EC Commission agreed on the principle of a future unique European Acceptance Scheme (EAS) which would provide a common testing and approval arrangement at European level. If and when the EAS is adopted, European Standards on products will be amended by the addition of an Annex Z/EAS under Mandate M/136 which will contain formal references to the testing, certification and product marking requirements of the EAS.
EN 14743:2005+A1:2007 is classified under the following ICS (International Classification for Standards) categories: 71.100.80 - Chemicals for purification of water; 91.140.60 - Water supply systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 14743:2005+A1:2007 has the following relationships with other standards: It is inter standard links to EN 14743:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 14743:2005+A1:2007 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC, 98/83/EC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Anlagen zur Behandlung von Trinkwasser innerhalb von Gebäuden - Enthärter - Anforderungen an Ausführung, Sicherheit und PrüfungAppareils de traitement d'eau a l'intérieur des bâtiments - Adoucisseurs - Exigences de performance, de sécurité et essaisWater conditioning equipment inside buildings - Softeners - Requirements for performance, safety and testing91.140.60Sistemi za oskrbo z vodoWater supply systems71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 14743:2005+A1:2007SIST EN 14743:2006+A1:2007en01-julij-2007SIST EN 14743:2006+A1:2007SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14743:2005+A1
June 2007 ICS 71.100.80; 91.140.60 SupersedesEN 14743:2005English Version
Water conditioning equipment inside buildings - Softeners - Requirements for performance, safety and testing
Appareils de traitement d'eau à l'intérieur des bâtiments - Adoucisseurs - Exigences de performance, de sécurité et essais
Anlagen zur Behandlung von Trinkwasser innerhalb von Gebäuden - Enthärter - 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 14743:2005+A1:2007: ESIST EN 14743:2006+A1:2007
!Installation, operation and maintenance.18 Bibliography.23
5 000 cycles with the pressure fluctuating at a frequency of 15 21+− cycles per minute between 150 kPa and 1,3 times the maximum design pressure as defined in 7.4.2. 4.3.3 Minimum and maximum operating pressure The softener shall operate and regenerate to the requirements of this European Standard with a minimum water supply pressure of 200 kPa and a maximum pressure not less than 60 % of the maximum design pressure when tested in accordance with 7.1.3 d). 4.3.4 Resistance to temperature The softener shall be designed to operate and regenerate to the requirements of this European Standard with water temperatures between 5 °C and 25 °C and with ambient temperatures between 5 °C and 35 °C. 4.3.5 Electrical safety Softening units shall conform to the requirements for safety of electrical appliances in accordance with
EN 60335-1. 4.3.6 Salt tank The salt tank shall be equipped with a cover to prevent the intrusion of dust and foreign bodies, and an overflow of ample dimensions. The capacity of the salt tank shall be such that it permits a minimum of five regenerations between refills. 4.3.7 Continuity of supply during regeneration The softener design shall permit continuity of water supply during regeneration (see 7.4.3). 4.3.8 Protection against backflow and infiltration of brine a) Softener shall include a device to prevent backflow into the main supply, in accordance with the national implementation of EN 1717. If such a device is not evident, the softener shall be tested in accordance with 7.4.4.1. These shall be no water or brine collected from the vacuum reservoir. b) Infiltration of brine into the softened water supply during normal operation shall also be verified by testing in accordance with 7.4.4.2. In no outlet samples, the chloride concentration shall exceed
1,5 mmol/l over that of the inlet water. 4.3.9 Noise level The softening unit shall conform to noise levels defined and measured in accordance with EN ISO 3822-1 and EN ISO 3822-3 for both the service and regeneration runs. SIST EN 14743:2006+A1:2007
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The standard EN 14743:2005+A1:2007 is a comprehensive document that delineates the essential requirements for the construction, operation, and testing of automatic, salt-regenerated cation exchange softeners intended for drinking water installations within buildings. The scope of this standard is vital as it addresses systems that are permanently connected to the mains water supply, ensuring the reliability and safety of the softeners used in domestic settings. One of the significant strengths of this standard is its detailed specifications concerning the performance and safety parameters of water conditioning equipment, specifically softeners. By focusing on cation exchange processes, the standard guarantees that such devices are effective in improving the quality of drinking water by reducing hardness. This is crucial for both consumer health and the longevity of plumbing systems, as hard water can lead to significant scaling and other maintenance issues. The standard also emphasizes the importance of compliance with national regulations regarding the use of materials in contact with drinking water, underlining the commitment to safety and performance. The reference to national testing arrangements ensures that the softeners not only meet European standards but are also aligned with local requirements – thus enhancing their credibility and marketability. Furthermore, the anticipated adoption of the European Acceptance Scheme (EAS) signifies a forward-looking approach towards uniform testing and approval processes across Europe. This future framework, which would be added as an Annex Z/EAS under Mandate M/136, will likely strengthen the standard's relevance by providing a recognized testing and certification pathway, facilitating market access for compliant products. Overall, EN 14743:2005+A1:2007 serves as an essential tool for manufacturers and regulators alike, ensuring that water conditioning equipment inside buildings meets stringent performance and safety standards. The emphasis on ongoing compliance with national regulations while paving the way for future harmonization makes this standard timely and relevant in the context of evolving European water quality demands.
Die Norm EN 14743:2005+A1:2007 beschäftigt sich mit der technischen Spezifizierung von Wasseraufbereitungsanlagen innerhalb von Gebäuden, insbesondere mit Salzhärte-Weichmachern. Sie legt fest, welche Anforderungen an die Leistung, Sicherheit und Prüfmethoden dieser Geräte zu stellen sind. Diese europäische Norm ist von wesentlicher Bedeutung für die Gewährleistung der Qualität und Sicherheit von Trinkwasserinstallationen, die dauerhaft an die öffentliche Wasserversorgung angeschlossen sind. Ein herausragender Punkt dieser Norm ist die detaillierte Beschreibung der Konstruktions- und Betriebsweise von automatischen, salzregenerierten Kationenaustauscher-Weichmachern. Diese Spezifikationen tragen dazu bei, dass Hersteller klare Vorgaben haben, die nicht nur die Funktionalität, sondern auch die Sicherheitsaspekte der Geräte betreffen. Die Norm stellt sicher, dass die Produkte den nationalen Vorschriften entsprechen und somit auch für den Kontakt mit Trinkwasser geeignet sind. In Anbetracht der anstehenden Einführung des Europäischen Genehmigungsschemas (EAS) ist es wichtig zu betonen, dass die Norm die Tür für zukünftige Anpassungen öffnet, um diese Anforderungen zu integrieren. Ein weiterer Stärke der EN 14743 liegt in den definierten Prüfmethoden, die den Herstellern und Regulierungsbehörden als wertvolle Leitlinie dienen. Dadurch wird die Konsistenz bei der Bewertung und Genehmigung von Wasseraufbereitungsanlagen gefördert. Die Norm zeigt auch, dass sie sich an den maßgeblichen europäischen Richtlinien orientiert und die Akzeptanz auf dem europäischen Markt somit erleichtert. Zusammenfassend lässt sich festhalten, dass die Norm EN 14743:2005+A1:2007 eine essentielle Grundlage für die Sicherheit und Effizienz von Weichmachern in Trinkwasserinstallationen darstellt. Ihre Relevanz zeigt sich in der kritischen Rolle, die sie bei der Sicherstellung von Trinkwasserqualität spielt und in der Anpassungsfähigkeit, die zukünftig durch das EAS gewährleistet werden könnte.
EN 14743:2005+A1:2007は、建物内の飲料水設備における自動塩再生型カチオン交換ソフトナーの性能、安全性、テスト要件についての重要な欧州標準です。この標準は、常に水道供給に接続されている飲料水システム向けの水処理機器の設計と運用に必要な要件を詳細に示しています。特に、塩再生型ソフトナーに関する性能基準や試験方法が定められているため、ユーザーは高品質な水の供給を確保することができます。 この標準の強みは、製品の安全性と性能を保証するための明確なテスト方法を提供している点です。飲料水と接触する製品に対する国家規制との整合性も考慮されているため、各国の規制を尊重した上で、欧州全体での導入が可能です。また、将来的にはユニークな欧州受入スキーム（EAS）が採用されることにより、テストおよび承認手続きがさらに統一され、製品の信頼性向上が期待されます。 この標準は、飲料水の安全性を重視し、ユーザーが安心して使用できる水処理設備の基準を設定する上で、極めて重要な役割を果たしています。SIST EN 14743:2006+A1:2007は、建物内での水処理に関する規範的な指針を提供し、持続可能な水管理に寄与することが期待されます。
La norme SIST EN 14743:2006+A1:2007 traite des équipements de conditionnement d'eau à l'intérieur des bâtiments, en se concentrant spécifiquement sur les adoucisseurs d'eau. Elle établit des exigences précises en matière de performance, de sécurité et de méthodes d'essai pour les adoucisseurs à échange cationique régénérés par sel, destinés à des installations d'eau potable qui sont raccordées de manière permanente au réseau d'alimentation en eau. Le champ d'application de cette norme est crucial, car il garantit que les équipements de traitement de l'eau répondent à des critères de performance rigoureux, ce qui est essentiel pour la santé publique et la sécurité des utilisateurs. Les exigences de construction et de fonctionnement définies dans la norme permettent d'assurer que les adoucisseurs fonctionnent de manière efficace tout en préservant la qualité de l'eau potable. Un des points forts de cette norme réside dans son orientation vers la conformité avec les réglementations nationales. Avant l'entrée en vigueur du Schéma d'Acceptation Européen (EAS), elle assure que les produits respectent les dispositions réglementaires existantes, ce qui permet une transition harmonieuse vers une normalisation à l'échelle européenne. L'accent mis sur la nécessité de se conformer aux réglementations nationales pendant cette période constitue une aide précieuse pour les fabricants et les utilisateurs, leur garantissant que les adoucisseurs d'eau en service sont non seulement efficaces mais également sûrs à utiliser. La norme est également pertinente dans le contexte de l'harmonisation des exigences à l'échelle européenne, surtout avec l'éventuelle adoption de l'EAS. Cela promet une structure cohérente pour la certification et le marquage des produits, renforçant ainsi la confiance des consommateurs dans les équipements de traitement de l'eau. Par conséquent, la norme SIST EN 14743:2006+A1:2007 joue un rôle crucial dans le cadre juridique et technique pour la sécurisation de l'approvisionnement en eau potable à travers l'Union Européenne.
표준 EN 14743:2005+A1:2007은 건물 내부의 음용수 설치를 위한 자동, 소금 재생형 양이온 교환 연수기와 관련된 성능, 안전 및 시험 요구 사항을 명확하게 규정하고 있습니다. 이 유럽 표준은 음용수 공급망에 영구적으로 연결된 연수기의 구조 및 작동 방식에 대한 요구 사항을 제시하고 있으며, 해당 제품들이 안전하고 효과적으로 음용수와 접촉할 수 있다는 것을 보장합니다. 이 표준의 범위는 건물 내 연수기 설치에 필요한 기본 요건을 포함하고 있으며, 음용수 시스템에서의 안전성을 위한 테스트 방법도 포함되어 있습니다. 이러한 요구 사항들은 모든 관련 업체들이 준수해야 할 기준을 제공함으로써, 최종 소비자에게 안전한 물을 공급하도록 돕습니다. EN 14743은 성능과 안전 기준에 대한 명확한 지침을 제공해, 연수기가 음용수 설치에서 효과적으로 기능할 수 있게 보장합니다. 또한, 표준은 향후 유럽의 수용 가능성 제도(EAS)가 시행될 경우, 제품 시험 및 인증 요구 사항에 대한 공식적인 참조를 추가할 내용을 포함할 수 있음을 명시하였습니다. 이처럼 EN 14743은 EU 내 모든 국가가 동일한 기준을 바탕으로 연수기 제품을 관리할 수 있는 기틀을 마련하고 있습니다. 강력한 장점 중 하나는 이 표준이 음용수의 안전성을 보장하기 위해 지켜야 할 규정을 명확히 한다는 점입니다. 연수기 제조사들은 이 표준을 준수함으로써, 제품의 품질을 높이고 시장에서의 경쟁력을 강화할 수 있습니다. 또한, 공통된 시험 및 승인 체계는 유럽 내 거래 시의 규제 장벽을 감소시키고, 소비자 신뢰를 증진시키는 데 기여할 것입니다. 따라서 EN 14743:2005+A1:2007 표준은 건물 내의 물 관리와 관련하여 매우 중요한 기준이자 가이드라인으로, 앞으로의 발전 가능성을 지닌 유용한 문서로 평가됩니다.
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