oSIST prEN 489-2:2026

District heating pipes - Factory made flexible pipe systems - Joint casing systems

This document specifies requirements and test methods for joint casing systems for factory made flexible pipe systems with a plastic service pipe in accordance with standard series EN 15632 1 to -3, EN 17878 1 to -3 or EN 17414 1 to -3, as applicable.
Requirements of joint casing systems for EN 15632-4 are not covered by this document, but by EN 489 1.

Fernwärmerohre - Werkseitig gedämmte flexible Rohrsysteme - Teil 2: Mantelrohrverbindungssysteme

Dieses Dokument legt Anforderungen und Prüfverfahren fest für Mantelrohrverbindungssysteme (zwischen benachbarten werkmäßig hergestellten Rohren und/oder Formstücken und/oder Armaturenbaugruppen) für werkmäßig hergestellte vorgedämmte flexible Rohrsysteme mit einem Kunststoff-Mediumrohr nach entweder der Normenreihe EN 15632 1 [1] bis EN 15632 3 [2], EN 17878 1 [3] bis EN 17878 3 [4], EN 17414 1 [5] bis EN 17414 3 [6] oder CEN/TS 17889 [7].
Es gilt nicht für starre Rohrsysteme nach EN 253 [8].
Die Installation des Rohrsystems nach den oben genannten Systemnormen ist eine Voraussetzung für die Anwendung eines in diesem Dokument festgelegten Mantelrohrverbindungssystems.
Anforderungen an Mantelrohrverbindungssysteme nach EN 15632 4 [9] werden nicht in diesem Dokument behandelt, sondern in EN 489 1 [10].

Tuyaux de chauffage urbain - Systèmes de tuyaux flexibles manufacturés - Systèmes de protection de l'assemblage

Le présent document spécifie les exigences et les méthodes d'essai pour les systèmes de protection de l’assemblage (entre tuyaux et/ou raccords et/ou robinets préisolés adjacents manufacturés) pour les systèmes de tuyaux flexibles préisolés manufacturés avec un tube de service en plastique conformément à l'une ou l'autre des séries de normes EN EN 15632-1[1] à EN 15632-3[2] , EN 17878-1[3] à EN 17878- 3[4] , EN 17414-1[5] à EN 17414-3[6] ou CEN/TS 17889[7].
Il ne s'applique pas aux systèmes de tuyaux rigides conformes à l’EN 253[8].
L'installation du système de tuyaux conformément aux normes de système mentionnées ci-dessus est une condition préalable à l'application d'un système de protection de l’assemblage spécifié par le présent document.
Les exigences relatives aux systèmes de protection de l’assemblage pour l’EN 15632-4[9] ne sont pas couvertes par le présent document, mais par l'EN 489-1[10].

Cevi za daljinsko ogrevanje - Tovarniško izdelani gibki cevni sistemi - Spojeni cevni sistemi

General Information

• Status: Not Published
• Public Enquiry End Date: 19-Jan-2026
• ICS: 23.040.07 - Pipeline and its parts for district heat
• ICS: 23.040.60 - Flanges, couplings and joints
• ICS: 91.140.65 - Water heating equipment
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 20-Nov-2025
• Due Date: 09-Apr-2026
• Ref Project: prEN 489-2 - District heating pipes - Factory made flexible pipe systems - Joint casing systems

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2026
Cevi za daljinsko ogrevanje - Tovarniško izdelani gibki cevni sistemi - Spojeni
cevni sistemi
District heating pipes - Factory made flexible pipe systems - Joint casing systems
Fernwärmerohre - Werkseitig gedämmte flexible Rohrsysteme - Teil 2:
Mantelrohrverbindungssysteme
Tuyaux de chauffage urbain - Systèmes de tuyaux flexibles manufacturés - Systèmes de
protection de l'assemblage
Ta slovenski standard je istoveten z: prEN 489-2
ICS:
23.040.07 Cevovodi za daljinsko Pipeline and its parts for
ogrevanje in njihovi deli district heat
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
91.140.65 Oprema za ogrevanje vode Water heating equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2025
ICS 23.040.07; 23.040.60
English Version
District heating pipes - Factory made flexible pipe systems
- Joint casing systems
Tuyaux de chauffage urbain - Systèmes de tuyaux Fernwärmerohre - Werkseitig gedämmte flexible
flexibles manufacturés - Systèmes de protection de Rohrsysteme - Teil 2: Mantelrohrverbindungssysteme
l'assemblage
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 107.
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 489-2:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Requirements . 4
4.1 General . 4
4.2 Installation instruction . 5
4.3 Resistance to external loads . 5
4.4 Leak tightness . 5
4.5 Thermal insulation . 5
4.5.1 General . 5
4.5.2 Minimum thickness of the thermal insulation . 5
4.5.3 Water absorption . 5
4.6 Use of rework material for the joint casing . 6
4.7 Plugs and closures for joint casing system to be foamed on-site . 6
4.7.1 General . 6
4.7.2 Sealed plugs . 6
4.7.3 Welded plugs . 6
5 Test methods . 6
5.1 Preparation of test specimen . 6
5.2 Leak tightness test . 6
5.2.1 General . 6
5.2.2 Water tank . 6
5.2.3 Test specimen . 6
5.2.4 Test instructions . 7
Annex A (informative) Overview of joint casing systems . 8
Annex B (informative) Guideline for testing . 9
B.1 General . 9
B.2 Manufacturer's type test . 9
B.3 Manufacturer’s quality control . 9
B.4 Additional inspection . 9
Bibliography . 10
European foreword
This document (prEN 489-2:2025) has been prepared by Technical Committee CEN/TC 107 "District
heating and cooling systems", the secretariat of which is held by DS.
This document is currently submitted to the CEN Enquiry.
1 Scope
This document spècifiès requirements and test methods for joint casing systems (between adjacent
factory made pipe, and/or fitting and/or valve assemblies) for factory made pre-insulated flèxiblè pipe
systems with a plastic service pipe in accordance with either standard series EN EN 15632-1[1] to EN
15632-3[2] , EN 17878-1[3] to EN 17878-3[4] , EN 17414-1[5] to EN 17414-3[6] or CEN/TS 17889[7].
It does not apply to rigid pipe systems according to EN 253[8].
The installation of the pipe system according to the system standards mentioned above is a precondition
for the application of a joint casing system spècifièd by this document.
Requirements of joint casing systems for EN 15632-4[9] are not covered by this document, but by EN
489-1[10] .
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 489-1, District heating pipes - Bonded single and twin pipe systems for buried hot water networks -
Part 1: Joint casing assemblies and thermal insulation for hot water networks in accordance with EN
13941-1
EN 15632-1, District heating pipes - Factory made flexible pipe systems - Part 1: Classification, general
requirements and test methods
EN 17248:2019, District heating and district cooling pipe systems - Terms and definitions
3 Terms and definitions
For the purposes of this document, the following terms an
...