prEN 15848
(Main)Water conditioning equipment inside buildings - Adjustable chemical dosing systems - Requirements for performance, safety and testing
Water conditioning equipment inside buildings - Adjustable chemical dosing systems - Requirements for performance, safety and testing
This document specifies definitions, principles of construction (but not dimensions) and design, requirements on performance 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.
Anlagen zur Behandlung von Trinkwasser innerhalb von Gebäuden - Einstellbare Dosiersysteme - Anforderungen an Ausführung, Sicherheit und Prüfung
Dieses Dokument legt Begriffe, Grundsätze der Konstruktion (jedoch keine Maße) und Gestaltung, Anforderungen an die Funktion und den Betrieb sowie Verfahren zur Prüfung der Leistungsanforderungen von einstellbaren Dosiersystemen zur Behandlung von Wasser für den menschlichen Gebrauch (siehe [1]) fest, die fest am Eintrittspunkt des Wassers in die Hausinstallation angeschlossen sind.
Équipement de conditionnement de l'eau à l'intérieur des bâtiments - Systèmes de dosage chimique réglables - Exigences relatives aux performances, à la sécurité et aux essais
Le présent document spécifie les définitions, les principes de construction (mais non les dimensions) et de conception, les exigences de performance et d'exploitation ainsi que les méthodes d'essai des performances des systèmes de dosage de produits chimiques réglables pour le conditionnement de l'eau destinée à la consommation humaine à l'intérieur des bâtiments (voir [ 1 ]) qui sont reliés en permanence à l'alimentation du réseau.
Oprema, ki se uporablja za pripravo pitne vode v stavbah - Nastavljivi sistemi za doziranje kemikalij - Zahteve za delovanje, varnost in preskušanje
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2025
Oprema, ki se uporablja za pripravo pitne vode v stavbah - Nastavljivi sistemi za
doziranje kemikalij - Zahteve za delovanje, varnost in preskušanje
Water conditioning equipment inside buildings - Adjustable chemical dosing systems -
Requirements for performance, safety and testing
Anlagen zur Behandlung von Trinkwasser innerhalb von Gebäuden - Einstellbare
Dosiersysteme - Anforderungen an Ausführung, Sicherheit und Prüfung
Équipement de conditionnement de l'eau à l'intérieur des bâtiments - Systèmes de
dosage chimique réglables - Exigences relatives aux performances, à la sécurité et aux
essais
Ta slovenski standard je istoveten z: prEN 15848
ICS:
13.060.20 Pitna voda Drinking water
91.140.60 Sistemi za oskrbo z vodo Water supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2025
ICS 13.060.20; 91.140.60 Will supersede EN 15848:2010
English Version
Water conditioning equipment inside buildings -
Adjustable chemical dosing systems - Requirements for
performance, safety and testing
Équipement de conditionnement de l'eau à l'intérieur Anlagen zur Behandlung von Trinkwasser innerhalb
des bâtiments - Systèmes de dosage chimique réglables von Gebäuden - Einstellbare Dosiersysteme -
- Exigences relatives aux performances, à la sécurité et Anforderungen an Ausführung, Sicherheit und Prüfung
aux essais
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 164.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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-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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15848:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Design requirements . 6
4.1 General. 6
4.2 Dosing system components . 6
4.3 Materials of construction . 6
4.4 Venting . 6
4.5 Radio interference and electrical safety. 6
4.6 Accessibility . 7
4.7 Nominal size . 7
4.8 Manual mode . 7
5 Performance requirements . 7
5.1 Chemicals . 7
5.2 Dosing system components . 7
5.2.1 Storage tank or chemical container . 7
5.2.2 Suction device . 7
5.2.3 Low level detection . 7
5.2.4 Dosing pump . 8
5.2.5 Overpressure valve . 8
5.2.6 Injection device . 8
5.2.7 Water meter . 8
5.3 Protection against overdosing . 8
5.4 Working temperature range . 8
5.5 Pressure conditions . 8
5.5.1 Nominal pressure and working pressure range . 8
5.5.2 Effects of pressure on dosing . 8
6 Testing . 9
6.1 General. 9
6.2 Operating characteristics . 9
6.2.1 Apparatus . 9
6.2.2 Procedure . 9
6.2.3 Expression of results . 10
6.3 Pressure test . 10
7 Labelling . 10
Annex A (normative) Installation, operation and maintenance . 12
Bibliography . 17
European foreword
This document (prEN 15848:2025) has been prepared by Technical Committee CEN/TC 164 “Water
supply”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15848:2010.
— Safety aspects relating to the system were included;
— Normative references have been updated.
Introduction
The aim of this document is to ensure that the concentration of the active chemical ingredient(s) and all
other components or minor constituents (including possible impurities) in the treated water does not
exceed the parameter values specified in [1] through the use of adjustable chemical dosing.
1 Scope
This document specifies definitions, principles of construction (but not dimensions) and design,
requirements on performance 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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1717, Protection against pollution of potable water in water installations and general requirements of
devices to prevent pollution by backflow
EN 55011, Industrial, scientific and medical equipment — Radio-frequency disturbance characteristics —
Limits and methods of measurement
EN 60204-1, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
EN 60335-1, Household and similar electrical appliances — Safety — Part 1: General requirements
(IEC 60335-1)
EN 60335-2-41, Household and similar electrical appliances — Safety — Part 2-41: Particular
requirements for pumps
EN ISO 12100-1, Safety of machinery — General principles for design — Risk assessment and risk reduction
(ISO 12100)
EN ISO 12100-2, Safety of machinery — General principles for design — Risk assessment and risk reduction
(ISO 12100)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
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 limits of concentration and pressure drop prescribed by the
manufacturer
Note 1 to entry: 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
4 Design 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 will be dosed into the
water pipe. If hazardous chemicals are used, the tank or the container shall be placed into an
additional safety storage tank to collect flowed back or spilled solutions. If non-hazardous chemicals
are used, the additional safety storage tank is also necessary to prevent slipping on the floor.
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) 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 that transmits a control signal to the dosing pump or another
analogue or digital device that adjusts the chemical dosing in proportion to the actual flow rate;
h) safety system, installed on the pressurized supply pipeline, to protect the operator and the
environment in the event of a rupture.
4.3 Materials of construction
Materials in contact with potable water shall not have any adverse effect on hygiene and shall not result
in exceeding the limit values specified in Directive (EU) 2020/
...
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