oSIST prEN 15698-2:2023

SLOVENSKI STANDARD
oSIST prEN 15698-2:2023
01-september-2023
Cevi za daljinsko ogrevanje - Poviti dvocevni sistemi za neposredno vkopana
vročevodna omrežja - 2. del: Tovarniško izdelan sestav fitingov in ventilov iz
jeklene cevi, poliuretanske toplotne izolacije in zunanjega polietilenskega plašča
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 a casing of polyethylene
Fernwärmerohre - Doppelrohr-Verbundsysteme für direkt erdverlegte Fernwärmenetze -
Teil 2: Werkmäßig gefertigtes Verbundformstück und vorgedämmte Absperrarmatur,
bestehend aus Stahl-Mediumrohr, einer Wärmedämmung aus Polyurethan und einer
Ummantelung aus Polyethylen
Tuyaux de chauffage urbain - Systèmes bloqués de bitubes pour les réseaux d'eau
chaude enterrés directement - Partie 2: Assemblages de raccords et d'appareils de
robinetterie manufacturés pour tube de service en acier, isolation thermique en
polyuréthane et tube de protection en polyéthylène
Ta slovenski standard je istoveten z: prEN 15698-2
ICS:
23.040.07 Cevovodi za daljinsko Pipeline and its parts for
ogrevanje in njihovi deli district heat
23.040.10 Železne in jeklene cevi Iron and steel pipes
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
oSIST prEN 15698-2:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 15698-2:2023

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oSIST prEN 15698-2:2023


DRAFT
EUROPEAN STANDARD
prEN 15698-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

July 2023
ICS 23.040.07; 23.060.01 Will supersede EN 15698-2:2019
English Version

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
Tuyaux de chauffage urbain - Systèmes bloqués de Fernwärmerohre - Verbundmanteldoppelrohre für
bitubes pour les réseaux d'eau chaude enterrés direkt erdverlegte Fernwärmenetze - Teil 2:
directement - Partie 2 : Assemblages de raccords et Werkmäßig hergestelltes Verbundformstück und
d'appareils de robinetterie manufacturés pour tube de vorgedämmte Absperrarmatur, bestehend aus Stahl-
service en acier, isolation thermique en polyuréthane Mediumrohr, Polyurethan-Wärmedämmung und
einem Mantel aus Polyethylen
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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15698-2:2023 E
worldwide for CEN national Members.

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oSIST prEN 15698-2:2023
prEN 15698-2:2023 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Requirements . 7
4.1 General . 7
4.2 Steel parts . 7
4.2.1 Specification . 7
4.2.2 Steel valves . 7
4.2.3 Diameter and wall thickness . 7
4.2.4 Surface condition . 7
4.3 Welding of steel parts . 7
4.3.1 Welding of steel service pipes and elements . 7
4.3.2 Welding of fixing bars . 8
4.3.3 Placing of the fixing bars . 8
4.4 Casing . 8
4.5 Polyurethane foam thermal insulation . 8
4.6 Fitting and valve assemblies . 8
4.6.1 General . 8
4.6.2 Thermal insulation series . 8
4.6.3 End alignment of flow and return steel service pipes . 8
4.6.4 Distance between flow and return steel service pipes . 8
4.6.5 End of fitting and valve assemblies. 9
4.6.6 Polyethylene welding . 10
4.6.7 End of stem construction . 10
4.6.8 Tolerances of the main fitting and valve dimensions . 10
4.7 Expected thermal life and long term temperature resistance . 10
4.8 Thermal conductivity . 10
4.9 Surface conditions at delivery . 10
4.10 Measuring wires for surveillance systems . 10
4.11 Resistance of the steel valves to axial forces and bending moments . 10
4.12 Installation, operation and maintenance . 10
5 Test methods . 10
6 Marking . 11
6.1 General . 11
6.2 Steel service pipe . 11
6.3 Steel fitting . 11
6.4 Casing . 11
6.5 Fitting assembly . 11
6.6 Steel valves and valve assembly . 11
6.7 Valves for venting and draining and valve assemblies. 11
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oSIST prEN 15698-2:2023
prEN 15698-2:2023 (E)
Annex A (informative) Guidelines for inspection and testing . 12
A.1 General . 12
A.2 Manufacturer’s type test . 12
A.3 Manufacturer’s quality control . 12
A.4 Additional inspection . 12
A.5 Manufacturer’s responsibility. 12
Annex B (informative) Waste treatment and recycling . 14
Annex C (informative) Examples of twin pipe fitting assemblies . 15
Bibliography . 18

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oSIST prEN 15698-2:2023
prEN 15698-2:2023 (E)
European foreword
This document (prEN 15698-2:2023) has been prepared by Technical Committee CEN/TC 107
“Prefabricated district heating and district cooling pipe system”, the secretariat of which is held by DS.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15698-2:2019.
The main changes compared to the previous edition are listed below:
— Alignment with the structure of EN 253;
— In alignment with the other standards of CEN/TC 107, explanatory information has been included in
Annex B.
The EN 15698 series, under the title District heating pipes — Bonded twin pipe systems for directly buried
hot water networks, is currently composed of the following parts:
— Part 1: Factory made twin pipe assembly of steel service pipes, polyurethane thermal insulation and one
casing of polyethylene;
— Part 2: Factory made fitting and valve assemblies of steel service pipes, polyurethane thermal insulation
and one casing of polyethylene (this document).
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oSIST prEN 15698-2:2023
prEN 15698-2:2023 (E)
Introduction
This document has been elaborated as a complement to the standards for bonded pipe systems for buried
hot water networks using steel service pipe and polyurethane foam thermal insulation and one casing of
polyethylene.
These standards are:
— EN 253, District heating pipes - Bonded single pipe systems for directly buried hot water networks -
Factory made pipe assembly of steel service pipe, polyurethane thermal insulation and a casing of
polyethylene
— prEN 448, District heating pipes - Bonded single pipe systems for directly buried hot water networks -
Factory made fitting assemblies of steel service pipes, polyurethane thermal insulation and a casing of
polyethylene
— prEN 488-1, District heating pipes — Bonded single pipe systems for directly buried hot water networks
— Part 1: Factory made steel valve assembly for steel service pipes, polyurethane thermal insulation
and a casing of polyethylene;
— prEN 488-2, District heating and district cooling pipes - Bonded pipe systems for directly buried hot
and cold water networks - Part 2: Factory made steel valve assembly for draining and venting,
polyurethane thermal insulation and a casing of polyethylene
— 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 13941-1, District heating pipes - Design and installation of thermal insulated bonded single and
twin pipe systems for directly 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 directly buried hot water networks - Part 2: Installation
— EN 14419, District heating pipes - Bonded single and twin pipe systems for buried hot water networks
- Surveillance systems
— EN 15632 (all parts), District heating pipes - Factory made flexible pipe systems
— prEN 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 thermal insulation and
one casing of polyethylene
— EN 17248, District heating and district cooling pipe systems - Terms and definitions
— EN 17414 (all parts), District cooling pipes - Factory made flexible pipe systems
— EN 17415 (all parts), District cooling pipes - Bonded single pipe systems for directly buried cold water
networks
— EN 17878 (all parts), District heating pipes - Factory made flexible pipe systems with a lower
temperature profile
Waste management and recycling of materials is dealt with in Annex A.
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oSIST prEN 15698-2:2023
prEN 15698-2:2023 (E)
1 Scope
This document specifies requirements
...