EN 489-1:2019

SLOVENSKI STANDARD
01-februar-2020
Nadomešča:
SIST EN 489:2009
Cevi za daljinsko ogrevanje - Predizolirani enocevni ali dvocevni sistemi za
vkopana vročevodna omrežja - 1. del: Spojeni cevni sestavi in toplotna izolacija za
vročevodna omrežja v skladu z EN 13941-1
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
Fernwärmerohre - Einzel- und Doppelrohr-Verbundsysteme für erdverlegte Heißwasser-
Fernwärmenetze - Teil 1: Mantelrohrverbindungen und Wärmedämmung für Heißwasser-
Fernwärmenetze nach EN 13941-1
Tuyaux de chauffage urbain - Systèmes bloqués de tuyaux monotubes et bitubes pour
les réseaux d'eau chaude enterrés - Partie 1 : Assemblage des joints de tube de
protection pour les réseaux d'eau chaude conformes à l'EN 13941-1
Ta slovenski standard je istoveten z: EN 489-1:2019
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.

EN 489-1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 23.040.07; 23.040.60 Supersedes EN 489:2009
English Version
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
Tuyaux de chauffage urbain - Systèmes bloqués de Fernwärmerohre - Einzel- und Doppelrohr-
tuyaux monotubes et bitubes pour les réseaux d'eau Verbundsysteme für erdverlegte Heißwasser-
chaude enterrés - Assemblage des joints de tube de Fernwärmenetze - Teil 1: Mantelrohrverbindungen
protection pour les réseaux d'eau chaude conformes à und Wärmedämmung für Heißwasser-
l'EN 13941-1 Fernwärmenetze nach EN 13941-1
This European Standard was approved by CEN on 12 August 2019.

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-CENELEC 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-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, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 489-1:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Requirements . 6
5 Test methods . 9
6 Marking . 15
7 Reporting . 16
Annex A (normative) Overview of available joint casing systems . 18
Annex B (informative) Guidelines for inspection and testing . 23
Bibliography . 25
European foreword
This document (EN 489-1:2019) has been prepared by Technical Committee CEN/TC 107 “District
heating and cooling”, the secretariat of which is held by DS.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 489:2009.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Turkey and the United
Kingdom.
Introduction
The first edition of EN 489 was approved in 1994 and updated in 2003 and 2009. The main areas of this
revision are the following:
— Terms and definitions has been moved to EN 13941-1;
— Ageing resistance test for PUR foam has been removed;
— requirements to plugs have been added;
— requirements and test methods for PUR foam properties are back in EN 253;
— requirements for marking of joints have been added;
— preparation of test specimen, under supervision of the test institute, has been added;
— it is valid for twin-pipe systems as well;
— Annex C was moved to EN 13941-2;
— concerning the soil stress test - the possibility of either overfill with 1 m sand or use of a rigid plate
was removed and is replaced by a total load of a rigid plate plus 0,3 m of sand to a total of 18 kN/m ;
— larger pipe diameters may be tested in soil stress test.
This specification is part of the series of standards for bonded systems using polyurethane foam thermal
insulation applied to bond to a steel service pipe and a polyethylene casing.
For information on the minimum expected thermal life with operation at various temperatures with
respect to PUR foam performance see EN 253.
Other standards from TC 107 are:
— EN 253, District heating pipes — Bonded single pipe systems for buried hot water networks — Factory
made pipe assembly of a steel service pipe, polyurethane foam thermal insulation and a casing of
polyethylene;
— EN 448, District heating pipes — Bonded pipe systems for buried hot water networks — Factory made
fitting assemblies of steel service pipes, polyurethane thermal insulation and a casing of polyethylene;
— EN 488, District heating pipes — Bonded single pipe systems for directly buried hot water networks —
Factory made steel valve assembly for steel service pipes, polyurethane foam thermal insulation and a
casing of polyethylene;
— EN 13941-1, District heating pipes — Design and installation of thermal insulated bonded single and
twin pipe systems for buried hot water networks — Part 1: Design
— EN 13941-2, District heating pipes — Design and installation of thermal insulated bonded single and
twin pipe systems for buried hot water networks — Part 2: Installation
— EN 17248, District heating and district cooling pipe systems - Terms and definitions
— EN 14419, District heating pipes — Bonded single and twin pipe systems for directly buried hot water
networks — Surveillance systems.
— EN 15632 (all parts), District heating pipes - Pre-insulated flexible pipe systems
— EN 15698-1, District heating pipes — Bonded twin pipe systems for directly buried hot water networks
— Part 1: Factory made twin pipe assembly of steel service pipes, polyurethane foam thermal insulation
and one casing of polyethylene
— EN 15698-2, District heating pipes — Bonded twin pipe systems for directly buried hot water networks
— Part 2: Factory made fitting and valve assemblies of steel service pipes, polyurethane thermal
insulation and one casing of polyethylene
1 Scope
This document specifies requirements and test methods for joints between adjacent factory made pipe,
and/or fitting and/or valve assemblies for buried hot water networks in accordance with EN 13941-1.
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 253:2019, District heating pipes — Bonded single pipe systems for buried hot water networks — Factory
made pipe assembly of a steel service pipe, polyurethane foam thermal insulation and a casing of
polyethylene
EN 12814-1, Testing of welded joints of thermoplastics semi-finished products — Part 1: Bend test
EN 13941-2, District heating pipes — Design and installation of thermal insulated bonded single and twin
pipe systems for directly buried hot water networks — Part 2: Installation
EN 17248, District heating and district cooling pipe systems — Terms and definitions
EN 14419, District heating pipes — Bonded single and twin pipe systems for directly buried hot water
networks — Surveillance systems
ISO 16770, Plastics — Determination of environmental stress cracking (ESC) of polyethylene — Full-notch
creep test (FNCT)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 17248 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
4 Requirements
4.1 General
Requirements which shall be fulfilled for all joints:

Under preparation. Stage at the time of publication: ISO/DIS 16770
Table 1 — Requirements to be tested on different systems
Joint requirements Welded joint Sealed joint
Soil stress if SCR is not possible 4.3.4
4.3.4
Stress Crack Resistance 4.3.6 -
SCR
Water tightness 4.3.5 4.3.5
Foam properties 4.3.3 4.3.3
Plug properties 4.3.7 4.3.7.2
4.2 General requirements for type testing
4.2.1 General
The assumptions of EN 13941-1 have been taken as the base for these requirements.
On testing each joint casing system and all relevant products shall be provided with installation
instructions, product data sheet and, if relevant, safety datasheet.
NOTE Annex A gives a categorization of different joint casing systems.
4.2.2 General requirements for the joint
The joint shall be:
— watertight;
— able to withstand longitudinal forces initiated by longitudinal movements of the pipe in the ground;
— able to withstand radial forces and bending moments;
— able to withstand effects of temperature and temperature variations.
4.2.3 Installation of the joint
Each individual step in the installation of a joint shall follow the system supplier's installation instructions
in order to ensure that the joint obtained is equivalent to the joint as previously type-tested.
4.3 Requirements for joints of single and twin pipes
4.3.1 General
There are no differences in requirements for single and twin pipe joints.
4.3.2 Welding of steel service pipes
Welds between steel service pipes shall be made in conformance with EN 13941-2.
4.3.3 Polyurethane (PUR) foam thermal insulation
4.3.3.1 General
The installation of the on-site filled insulation or the pre-fabricated thermal joint insulation shall be
carried out according to the supplier’s installation instruction.
The insulation shall completely fill the joint.
4.3.3.2 Foam density
The requirement for foam density shall be in accordance with EN 253.
4.3.3.3 Compressive strength
The requirement for compressive strength shall be in accordance with EN 253.
4.3.3.4 Cell size
The requirement for the average cell size in radial direction shall be in accordance with EN 253.
4.3.3.5 Water absorption at elevated temperature
The requirement for water absorption at elevated temperature shall be in accordance with EN 253.
4.3.4 Soil stress test
Joints shall, as mentioned in Table 1, pass the soil stress test in accordance with 5.2.
4.3.5 Water tightness
For all joint casing systems it applies
...