DIN 3607-2 2023-05 PDF

Full title and description

STB DIN 3607-2:2023-05 — Kalkschutzgeräte zum Einsatz in Trinkwasser-Installationen — Teil 2: Verfahren und Vorrichtungen zur Prüfung der Wirksamkeit. English title: Limescale protection devices for use in drinking water installations — Part 2: Method and apparatus for testing of the effectiveness. This document defines test methods, test-rig requirements and evaluation criteria used to assess the effectiveness of non-chemical limescale-protection devices and similar installations when installed in drinking-water systems.

Abstract

DIN 3607-2:2023-05 specifies the procedure, apparatus and measurement/verification requirements for assessing the effectiveness of limescale protection devices intended for use in potable-water installations (cold-flow and warm-water circulation). The standard sets out test-water characteristics, test-rig configuration, operational and loading profiles, verification/validation of the test equipment, measurement and evaluation procedures and requirements for test reporting. It is intended to provide a reproducible laboratory/bench test that supports product conformity assessment and certification (e.g. DVGW-type testing history).

General information

• Status: Current / Active standard.
• Publication date: 01 May 2023 (2023-05).
• Publisher: DIN (Deutsches Institut für Normung) — developed in cooperation with DVGW (German Gas and Water Association).
• ICS / categories: 13.060.20 (Drinking water); 91.140.60 (Water supply systems).
• Edition / version: 2023-05 (first published edition in this release cycle).
• Number of pages: 33 pages.

Scope

This part of DIN 3607 applies to procedures and apparatus for laboratory testing of the effectiveness (Wirksamkeit) of devices and installations designed to prevent or substantially reduce scale formation in drinking-water installations, including devices installed in cold-water flow and warm-water circulation systems. It is not intended for dosing or ion-exchange softening plants that are covered by other product norms. The standard is aligned with and replaces older DVGW worksheets used for the same purpose and clarifies requirements for reproducible effectiveness testing and reporting.

Key topics and requirements

• Definition of test-water composition and conditions representative of strongly scaling/hard waters.
• Specification of a standardized test rig layout (parallel test and reference branches), hydraulic connections and instrumentation.
• Operational and loading profiles for cold-water flow devices and for warm-water circulation devices (including temperature and flow regimes).
• Verification, validation and ongoing control of the test apparatus (including procedures for initial verification and periodic checks).
• Measurement methods and data recording requirements for deposition, mass gain/loss, and other relevant parameters.
• Calculation of an effectiveness factor and criteria for pass/fail evaluation (practical certification practice uses e.g. multi-week test runs and comparative reduction metrics versus reference lines).
• Requirements for test duration, sample handling, uncertainty assessment and reporting (including content of the formal test report).
• Notes and informative annexes with example test profiles, test-rig schematics and a measurement-uncertainty budget.

Typical use and users

Manufacturers and developers of limescale-protection devices, independent test laboratories, certification bodies, product conformity assessors, installers and technical planners in building services and sanitary engineering use DIN 3607-2 to perform or interpret standardized effectiveness tests. Authorities and specifiers refer to it when assessing claims about non-chemical scale-control devices for potable-water installations.

Related standards

Key related documents include DIN 3607-1 (Part 1: requirements for design, safety and testing), the earlier DVGW worksheets W 510 and W 512 (now withdrawn / replaced by the DIN 3607 series), and other drinking-water installation standards such as DIN 1988 series and hygiene/backflow protection standards (e.g. EN 1717) that govern safe installation and materials in contact with potable water.

Keywords

limescale protection, kalkschutzgerät, drinking water, potable water installations, effectiveness test, test rig, verification, DVGW, scale reduction, test procedure, assessment, certification

FAQ

Q: What is this standard?

A: DIN 3607-2:2023-05 is the part of the DIN 3607 series that defines methods and apparatus for testing the effectiveness of limescale-protection devices used in drinking-water installations.

Q: What does it cover?

A: It covers the test-water specifications, test-rig design, operational/load profiles, verification and calibration of test equipment, measurement and data recording methods, calculation of effectiveness and the structure/content of test reports required to demonstrate device performance.

Q: Who typically uses it?

A: Product manufacturers, independent test laboratories, certification bodies (for product type testing), installers, planners and compliance officers in the drinking-water and building-services sector.

Q: Is it current or superseded?

A: The document is current (published 01 May 2023). It supersedes earlier DVGW worksheets used for the same purpose (notably W 512) and works together with DIN 3607-1 (Part 1) which covers product-level requirements for safety and usability.

Q: Is it part of a series?

A: Yes — DIN 3607 is a multipart standard for limescale-protection devices; Part 1 covers requirements for execution, safety and testing, and Part 2 (this document) covers test methods for effectiveness. The two parts are used together for product assessment and certification.

Q: What are the key keywords?

A: Limescale protection, Kalkschutz, drinking water, test method, effectiveness, DVGW, test rig, verification, certification.