Building environment design - Design , dimensioning, installation and control of embedded radiant heating and cooling systems - Part 5: Installation (ISO 11855-5:2012)

This European Standard applies to heating and cooling systems embedded into the enclosure surfaces of the room to be heated or to be cooled. This International Standard specifies uniform requirements for the design and the construction of heating and cooling floor, ceiling and wall structures to ensure that the heating/cooling systems are suited to the particular application. The requirements specified by this International Standard concern only the components of the heating/cooling systems and the elements which are part of the heating/cooling surface and which are installed due to the heating/cooling systems. This International Standard is not applicable to the other elements which are part of the floor, ceiling and wall structures (heated or not heated).

Umweltgerechte Gebäudeplanung - Planung, Auslegung, Installation und Steuerung flächenintegrierter Strahlheizungs- und -kühlsysteme - Teil 5: Installation (ISO 11855-5:2012)

Conception de l'environnement des bâtiments - Conception, construction et fonctionnement des systèmes de chauffage et de refroidissement par rayonnement - Partie 5: Installation (ISO 11855-5:2012)

ISO 11855-5:2012 établit les lignes directrices relatives à l'installation de systèmes de chauffage et de refroidissement par rayonnement intégrés. Elle spécifie des exigences uniformisées pour la conception et la construction des structures de chauffage et de refroidissement par le sol, le plafond et les murs, permettant de garantir que les systèmes de chauffage/refroidissement sont adaptés à l'application considérée. Les exigences spécifiées par la présente partie de l'ISO 11855 ne s'appliquent qu'aux composants des systèmes de chauffage/refroidissement et aux éléments qui font partie de la surface de chauffage/refroidissement et qui sont installés en raison de la présence des systèmes de chauffage/refroidissement.
La présente partie de l'ISO 11855 s'applique aux systèmes de chauffage et de refroidissement de surface intégrés à eau dans les bâtiments résidentiels, commerciaux et industriels. Ces méthodes s'appliquent aux systèmes intégrés dans les murs, sols ou du plafond, sans ouverture à l'air libre. Elles ne s'appliquent pas aux systèmes de panneaux avec ouverture à l'air libre qui ne sont pas intégrés dans une structure d'un bâtiment.

Načrtovanje gradnje - Načrtovanje, dimenzioniranje, montaža in kontrola vgrajenih hladilnih in ogrevalnih sistemov - 5. del: Inštalacija (ISO 11855-5:2012)

Ta evropski standard se uporablja za ogrevalne in hladilne sisteme, ki so vgrajeni v površine okoli sobe, ki se ogreva in ohlaja. Ta mednarodni standard določa enotne zahteve za načrtovanje in konstrukcijo ogrevalnih ter hladilnih talnih, stropnih in stenskih struktur, da bi se zagotovilo, da so ogrevalni/hladilni sistemi primerni za posamezno uporabo. Zahteve v tem mednarodnem standardu se nanašajo le na komponente ogrevalnih/hladilnih sistemov in elemente, ki so del ogrevalne/hladilne površine ter so vgrajeni zaradi ogrevalnih/hladilnih sistemov. Ta mednarodni standard se ne uporablja za druge elemente, ki so del talnih, stropnih in stenskih struktur (ogrevanih ali ne).

General Information

Status
Withdrawn
Publication Date
04-Aug-2015
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
01-Sep-2021

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SLOVENSKI STANDARD
SIST EN ISO 11855-5:2015
01-oktober-2015

1DþUWRYDQMHJUDGQMH1DþUWRYDQMHGLPHQ]LRQLUDQMHPRQWDåDLQNRQWURODYJUDMHQLK

KODGLOQLKLQRJUHYDOQLKVLVWHPRYGHO,QãWDODFLMD ,62
Building environment design - Design , dimensioning, installation and control of

embedded radiant heating and cooling systems - Part 5: Installation (ISO 11855-5:2012)

Umweltgerechte Gebäudeplanung - Planung, Auslegung, Installation und Steuerung

flächenintegrierter Strahlheizungs- und -kühlsysteme - Teil 5: Installation (ISO 11855-

5:2012)
Conception de l'environnement des bâtiments - Conception, construction et
fonctionnement des systèmes de chauffage et de refroidissement par rayonnement -
Partie 5: Installation (ISO 11855-5:2012)
Ta slovenski standard je istoveten z: EN ISO 11855-5:2015
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning
SIST EN ISO 11855-5:2015 en,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 11855-5:2015
---------------------- Page: 2 ----------------------
SIST EN ISO 11855-5:2015
EUROPEAN STANDARD
EN ISO 11855-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2015
ICS 91.140.10; 91.140.30
English Version
Building environment design - Design , dimensioning, installation
and control of embedded radiant heating and cooling systems -
Part 5: Installation (ISO 11855-5:2012)

Conception de l'environnement des bâtiments - Conception, Umweltgerechte Gebäudeplanung - Planung, Auslegung,

construction et fonctionnement des systèmes de chauffage Installation und Steuerung flächenintegrierter

et de refroidissement par rayonnement - Partie 5: Strahlheizungs- und -kühlsysteme - Teil 5: Installation (ISO

Installation (ISO 11855-5:2012) 11855-5:2012)
This European Standard was approved by CEN on 30 July 2015.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels

© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11855-5:2015 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 11855-5:2015
EN ISO 11855-5:2015 (E)
Contents Page

European foreword .............................................................................................................................................3

---------------------- Page: 4 ----------------------
SIST EN ISO 11855-5:2015
EN ISO 11855-5:2015 (E)
European foreword

The text of ISO 11855-5:2012 has been prepared by Technical Committee ISO/TC 205 “Building environment

design” of the International Organization for Standardization (ISO) and has been taken over as EN ISO

11855-5:2015 by Technical Committee CEN/TC 228 “Heating systems and water based cooling systems in

buildings” the secretariat of which is held by DIN

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 February 2016, and conflicting national standards shall be withdrawn

at the latest by February 2016.

This standard is applicable for design, construction and operation of radiant heating and cooling systems. The

methods defined in part 2 are intended to determine the design heating or cooling capacity used for the design

and evaluation of the performance of the system.

For identifying product characteristics by testing and proving the thermal output of heating and cooling

surfaces embedded in floors, ceilings and walls the standard series EN 1264 can be used.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Endorsement notice

The text of ISO 11855-5:2012 has been approved by CEN as EN ISO 11855-5:2015 without any modification.

---------------------- Page: 5 ----------------------
SIST EN ISO 11855-5:2015
---------------------- Page: 6 ----------------------
SIST EN ISO 11855-5:2015
INTERNATIONAL ISO
STANDARD 11855-5
First edition
2012-04-15
Building environment design — Design,
dimensioning, installation and control
of embedded radiant heating and
cooling systems —
Part 5:
Installation
Conception de l’environnement des bâtiments — Conception,
construction et fonctionnement des systèmes de chauffage et de
refroidissement par rayonnement —
Partie 5: Installation
Reference number
ISO 11855-5:2012(E)
ISO 2012
---------------------- Page: 7 ----------------------
SIST EN ISO 11855-5:2015
ISO 11855-5:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s

member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 11855-5:2015
ISO 11855-5:2012(E)
Contents Page

Foreword ............................................................................................................................................................................iv

1 Scope ...................................................................................................................................................................... 1

2 Normative references ......................................................................................................................................... 1

3 Terms and definitions ......................................................................................................................................... 2

4 Symbols and abbreviations .............................................................................................................................. 2

5 Installation ............................................................................................................................................................. 2

5.1 Floor heating and cooling systems ................................................................................................................ 2

5.2 Heating and cooling systems embedded in ceilings and walls .............................................................. 7

Annex A (informative) Corrosion prevention............................................................................................................... 9

Bibliography .....................................................................................................................................................................10

© ISO 2012 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 11855-5:2015
ISO 11855-5:2012(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International

Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 11855-5 was prepared by Technical Committee ISO/TC 205, Building environment design

ISO 11855 consists of the following parts, under the general title Building environment design — Design,

dimensioning, installation and control of embedded radiant heating and cooling systems:

— Part 1: Definition, symbols, and comfort criteria
— Part 2: Determination of the design heating and cooling capacity
— Part 3: Design and dimensioning

— Part 4: Dimensioning and calculation of the dynamic heating and cooling capacity of Thermo Active

Building Systems (TABS)
— Part 5: Installation
— Part 6: Control

Part 1 of this International Standard defines the comfort criteria which should be considered in designing

embedded radiant heating and cooling systems, since the main objective of the radiant heating and cooling

system is to satisfy thermal comfort of the occupants. In Part 2, steady-state calculation methods for

determination of the heating and cooling capacity are provided. Part 3 specifies the design and dimensioning

method of radiant heating and cooling systems to ensure the heating and cooling capacity. Part 4 provides a

dimensioning and calculation method to design Thermo Active Building Systems (TABS) for energy-saving,

since radiant heating and cooling systems can reduce energy consumption and heat source size by using

renewable energy. Part 5 describes the installation process for the system to operate as intended. Finally,

Part 6 describes a proper control method for the radiant heating and cooling systems to ensure the maximum

performance which was intended in the design stage when the system is actually being operated in a building.

1) Parts 1, 2, 3, 4 and 6 are to be published.
iv © ISO 2012 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 11855-5:2015
INTERNATIONAL STANDARD ISO 11855-5:2012(E)
Building environment design — Design, dimensioning,
installation and control of embedded radiant heating and
cooling systems —
Part 5:
Installation
1 Scope

This part of ISO 11855 establishes guidelines on the installation of embedded radiant heating and cooling

systems. It specifies uniform requirements for the design and construction of heating and cooling floors, ceiling

and wall structures to ensure that the heating/cooling systems are suited to the particular application. The

requirements specified by this part of ISO 11855 are applicable only to the components of the heating/cooling

systems and the elements which are part of the heating/cooling surface and which are installed due to the

heating/cooling systems.

This part of ISO 11855 is applicable to water-based embedded surface heating and cooling systems in

residential, commercial and industrial buildings. The methods apply to systems integrated into the wall, floor

or ceiling construction without any open-air gaps, but are not applicable to panel systems with open-air gaps

which are not integrated into the building structure.
2 Normative references

The following referenced documents are indispensable for the application 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.

ISO 10508:2006, Plastics piping systems for hot and cold water installations — Guidance for classification and

design

ISO 11855-1, Building environment design — Design, dimensioning, installation and control of embedded

radiant heating and cooling systems — Part 1: Definition, symbols, and comfort criteria

ISO 15874 (all parts), Plastics piping systems for hot and cold water installations — Polypropylene (PP)

ISO 15875 (all parts), Plastics piping systems for hot and cold water installations — Crosslinked polyethylene (PEX)

ISO 15876 (all parts), Plastics piping systems for hot and cold water installations — Polybutylene (PB)

ISO 15877 (all parts), Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl

chloride) (PVC-C)

ISO 21003-1 (all parts), Multilayer piping systems for hot and cold water installations inside buildings

ISO 22391 (all parts), Plastics piping systems for hot and cold water installations — Polyethylene of raised

temperature resistance (PE-RT)

EN 1057, Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and

heating applications
EN 1254 (all parts), Copper and copper alloys — Plumbing fittings

DIN 4724, Kunststoff-Rohrleitungssysteme für Warmwasserheizung und Heizkörperanbindung — Vernetztes

Polyethylen mittlerer Dichte (PE-MDX)
© ISO 2012 – All rights reserved 1
---------------------- Page: 11 ----------------------
SIST EN ISO 11855-5:2015
ISO 11855-5:2012(E)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 11855-1 apply.

NOTE All terms and definitions in this part of ISO 11855 are consistent with ISO 7345, ISO 9229, ISO 9288, ISO 9346

and ISO 16818.
4 Symbols and abbreviations

For the purposes of this document, the symbols and abbreviations in Table 1 apply.

Table 1 — Symbols and abbreviations
Symbol Unit Quantity
R m K/W thermal resistance of the insulating layer of the heating/cooling system
λ,ins
ϑ °C external design temperature
ϑ °C maximum heating water flow temperatures
V,des,max
PB — polybutylene
PE-X — cross-linked polyethylene
PE-MDX — cross-linked polyethylene, medium density
PE-RT Systems — polyethylene of raised temperature resistance
PP — polypropylene
PVC-C — chlorinated polyvinyl chloride
5 Installation
5.1 Floor heating and cooling systems
5.1.1 General structural preconditions

The installation of a hot water floor heating and/or cooling system must follow the previous installation of any

electrical, sanitary and other pipe facilities. The structure as specified in 5.1.2.1, along with the draught-free

closure of all building openings, e.g. windows and outer doors, must be completed.

5.1.2 Building layers, building components
5.1.2.1 Supporting base

The supporting base shall be prepared in accordance with relevant standards. Any pipe work or conduits shall

be fixed and encased to provide a level base upon which thermal insulation and/or acoustic insulation is added

before laying the heating pipes. In this respect, the necessary structural height shall be taken into account.

Where service pipes are installed within the insulating layer, they must be protected against temperature

change in accordance with national regulations.
5.1.2.2 Insulating layers, perimeter insulating strip
5.1.2.2.1 Insulating layers

The resistance R of the insulating layer of the heating/cooling system is specified in Table 2. These

λ,ins

requirements are for heating and cooling systems. For cooling systems only, these values are recommended.

2 © ISO 2012 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 11855-5:2015
ISO 11855-5:2012(E)

Table 2 — Minimum thermal resistance of insulating layers below the pipes of heating/cooling

systems (m K)/W
Unheated or External design temperature below
Heated intermittent heated
room room below or
θ ≥ 0 °C 0 °C > θ ≥ −5 °C -5 °C > θ ≥ −15 °C
d d d
below directly on the
ground
thermal
resistance 0,75 1,25 1,25 1,50 2,00
λ,ins

With ground water level ≤ 5m below the supporting base, the value should be increased.

When installing the insulating layer, the insulating panels shall be butted tightly together. Multiple insulating

layers shall be staggered or placed in such a way that the joints between panels of one layer are out of line

with the next layer.
NOTE National building codes may require higher insulation levels.
5.1.2.2.2 Peripheral insulating strip

Before laying the screed, a peripheral insulating strip (edge joint) shall be placed along the walls and other building

components penetrating the screed and firmly secured to the supporting base (e.g. door frames, pillars and risers).

The peripheral insulating strip shall rise from the supporting base up to the surface of the finished floor and

permit a movement of the screed of at least 5 mm.

In the case of multiple insulating layers, the peripheral insulating strip shall be placed before application of

the upper insulating layer. When laying the screed, the peripheral insulating strip shall be secured against any

change in position. The top part of the peripheral insulating strip which rises over the finished floor shall not be

cut off until completion of the floor covering and, in the case of textile and plastic coverings, hardening of the filler.

5.1.2.3 Protection layer

Before laying the screed, the insulating layer shall be covered with a protective layer consisting of a polyethylene

film of at least 0,15 mm thickness, with a minimum of 80 mm overlap, or with an
...

SLOVENSKI STANDARD
kSIST FprEN ISO 11855-5:2015
01-julij-2015

1DþUWRYDQMHJUDGQMH1DþUWRYDQMHGLPHQ]LRQLUDQMHPRQWDåDLQNRQWURODYJUDMHQLK

KODGLOQLKLQRJUHYDOQLKVLVWHPRYGHO,QãWDODFLMD ,62
Building environment design - Design , dimensioning, installation and control of

embedded radiant heating and cooling systems - Part 5: Installation (ISO 11855-5:2012)

Umweltgerechte Gebäudeplanung - Planung, Auslegung, Installation und Steuerung

flächenintegrierter Strahlheizungs- und -kühlsysteme - Teil 5: Installation (ISO 11855-

5:2012)
Conception de l'environnement des bâtiments - Conception, construction et
fonctionnement des systèmes de chauffage et de refroidissement par rayonnement -
Partie 5: Installation (ISO 11855-5:2012)
Ta slovenski standard je istoveten z: FprEN ISO 11855-5
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning
kSIST FprEN ISO 11855-5:2015 de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
kSIST FprEN ISO 11855-5:2015
---------------------- Page: 2 ----------------------
kSIST FprEN ISO 11855-5:2015
EUROPEAN STANDARD
FINAL DRAFT
FprEN ISO 11855-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2015
ICS 91.140.10; 91.140.30
English Version
Building environment design - Design , dimensioning, installation
and control of embedded radiant heating and cooling systems -
Part 5: Installation (ISO 11855-5:2012)

Conception de l'environnement des bâtiments - Conception, Umweltgerechte Gebäudeplanung - Planung, Auslegung,

construction et fonctionnement des systèmes de chauffage Installation und Steuerung flächenintegrierter

et de refroidissement par rayonnement - Partie 5: Strahlheizungs- und -kühlsysteme - Teil 5: Installation (ISO

Installation (ISO 11855-5:2012) 11855-5:2012)

This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical

Committee CEN/TC 228.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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: Avenue Marnix 17, B-1000 Brussels

© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprEN ISO 11855-5:2015 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
kSIST FprEN ISO 11855-5:2015
FprEN ISO 11855-5:2015 (E)
Contents Page

Foreword ..............................................................................................................................................................3

---------------------- Page: 4 ----------------------
kSIST FprEN ISO 11855-5:2015
FprEN ISO 11855-5:2015 (E)
Foreword

The text of ISO 11855-5:2012 has been prepared by Technical Committee ISO/TC 205 “Building environment

design” of the International Organization for Standardization (ISO) and has been taken over as FprEN ISO

11855-5:2015 by Technical Committee CEN/TC 228 “Heating systems and water based cooling systems in

buildings” the secretariat of which is held by DIN
This document is currently submitted to the Unique Acceptance Procedure.

This standard is applicable for design, construction and operation of radiant heating and cooling systems. The

methods defined in part 2 are intended to determine the design heating or cooling capacity used for the design

and evaluation of the performance of the system.

For identifying product characteristics by testing and proving the thermal output of heating and cooling

surfaces embedded in floors, ceilings and walls the standard series EN 1264 can be used.

Endorsement notice

The text of ISO 11855-5:2012 has been approved by CEN as FprEN ISO 11855-5:2015 without any

modification.
---------------------- Page: 5 ----------------------
kSIST FprEN ISO 11855-5:2015
---------------------- Page: 6 ----------------------
kSIST FprEN ISO 11855-5:2015
INTERNATIONAL ISO
STANDARD 11855-5
First edition
2012-04-15
Building environment design — Design,
dimensioning, installation and control
of embedded radiant heating and
cooling systems —
Part 5:
Installation
Conception de l’environnement des bâtiments — Conception,
construction et fonctionnement des systèmes de chauffage et de
refroidissement par rayonnement —
Partie 5: Installation
Reference number
ISO 11855-5:2012(E)
ISO 2012
---------------------- Page: 7 ----------------------
kSIST FprEN ISO 11855-5:2015
ISO 11855-5:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s

member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 8 ----------------------
kSIST FprEN ISO 11855-5:2015
ISO 11855-5:2012(E)
Contents Page

Foreword ............................................................................................................................................................................iv

1 Scope ...................................................................................................................................................................... 1

2 Normative references ......................................................................................................................................... 1

3 Terms and definitions ......................................................................................................................................... 2

4 Symbols and abbreviations .............................................................................................................................. 2

5 Installation ............................................................................................................................................................. 2

5.1 Floor heating and cooling systems ................................................................................................................ 2

5.2 Heating and cooling systems embedded in ceilings and walls .............................................................. 7

Annex A (informative) Corrosion prevention............................................................................................................... 9

Bibliography .....................................................................................................................................................................10

© ISO 2012 – All rights reserved iii
---------------------- Page: 9 ----------------------
kSIST FprEN ISO 11855-5:2015
ISO 11855-5:2012(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International

Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 11855-5 was prepared by Technical Committee ISO/TC 205, Building environment design

ISO 11855 consists of the following parts, under the general title Building environment design — Design,

dimensioning, installation and control of embedded radiant heating and cooling systems:

— Part 1: Definition, symbols, and comfort criteria
— Part 2: Determination of the design heating and cooling capacity
— Part 3: Design and dimensioning

— Part 4: Dimensioning and calculation of the dynamic heating and cooling capacity of Thermo Active

Building Systems (TABS)
— Part 5: Installation
— Part 6: Control

Part 1 of this International Standard defines the comfort criteria which should be considered in designing

embedded radiant heating and cooling systems, since the main objective of the radiant heating and cooling

system is to satisfy thermal comfort of the occupants. In Part 2, steady-state calculation methods for

determination of the heating and cooling capacity are provided. Part 3 specifies the design and dimensioning

method of radiant heating and cooling systems to ensure the heating and cooling capacity. Part 4 provides a

dimensioning and calculation method to design Thermo Active Building Systems (TABS) for energy-saving,

since radiant heating and cooling systems can reduce energy consumption and heat source size by using

renewable energy. Part 5 describes the installation process for the system to operate as intended. Finally,

Part 6 describes a proper control method for the radiant heating and cooling systems to ensure the maximum

performance which was intended in the design stage when the system is actually being operated in a building.

1) Parts 1, 2, 3, 4 and 6 are to be published.
iv © ISO 2012 – All rights reserved
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kSIST FprEN ISO 11855-5:2015
INTERNATIONAL STANDARD ISO 11855-5:2012(E)
Building environment design — Design, dimensioning,
installation and control of embedded radiant heating and
cooling systems —
Part 5:
Installation
1 Scope

This part of ISO 11855 establishes guidelines on the installation of embedded radiant heating and cooling

systems. It specifies uniform requirements for the design and construction of heating and cooling floors, ceiling

and wall structures to ensure that the heating/cooling systems are suited to the particular application. The

requirements specified by this part of ISO 11855 are applicable only to the components of the heating/cooling

systems and the elements which are part of the heating/cooling surface and which are installed due to the

heating/cooling systems.

This part of ISO 11855 is applicable to water-based embedded surface heating and cooling systems in

residential, commercial and industrial buildings. The methods apply to systems integrated into the wall, floor

or ceiling construction without any open-air gaps, but are not applicable to panel systems with open-air gaps

which are not integrated into the building structure.
2 Normative references

The following referenced documents are indispensable for the application 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.

ISO 10508:2006, Plastics piping systems for hot and cold water installations — Guidance for classification  and

design

ISO 11855-1, Building environment design — Design, dimensioning, installation and control of embedded

radiant heating and cooling systems — Part 1: Definition, symbols, and comfort criteria

ISO 15874 (all parts), Plastics piping systems for hot and cold water installations — Polypropylene (PP)

ISO 15875 (all parts), Plastics piping systems for hot and cold water installations — Crosslinked polyethylene (PEX)

ISO 15876 (all parts), Plastics piping systems for hot and cold water installations — Polybutylene (PB)

ISO 15877 (all parts), Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl

chloride) (PVC-C)

ISO 21003-1 (all parts), Multilayer piping systems for hot and cold water installations inside buildings

ISO 22391 (all parts), Plastics piping systems for hot and cold water installations — Polyethylene of raised

temperature resistance (PE-RT)

EN 1057, Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and

heating applications
EN 1254 (all parts), Copper and copper alloys — Plumbing fittings

DIN 4724, Kunststoff-Rohrleitungssysteme für Warmwasserheizung und Heizkörperanbindung — Vernetztes

Polyethylen mittlerer Dichte (PE-MDX)
© ISO 2012 – All rights reserved 1
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kSIST FprEN ISO 11855-5:2015
ISO 11855-5:2012(E)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 11855-1 apply.

NOTE All terms and definitions in this part of ISO 11855 are consistent with ISO 7345, ISO 9229, ISO 9288, ISO 9346

and ISO 16818.
4 Symbols and abbreviations

For the purposes of this document, the symbols and abbreviations in Table 1 apply.

Table 1 — Symbols and abbreviations
Symbol Unit Quantity
R m K/W thermal resistance of the insulating layer of the heating/cooling system
λ,ins
ϑ °C external design temperature
ϑ °C maximum heating water flow temperatures
V,des,max
PB — polybutylene
PE-X — cross-linked polyethylene
PE-MDX — cross-linked polyethylene, medium density
PE-RT Systems — polyethylene of raised temperature resistance
PP — polypropylene
PVC-C — chlorinated polyvinyl chloride
5 Installation
5.1 Floor heating and cooling systems
5.1.1 General structural preconditions

The installation of a hot water floor heating and/or cooling system must follow the previous installation of any

electrical, sanitary and other pipe facilities. The structure as specified in 5.1.2.1, along with the draught-free

closure of all building openings, e.g. windows and outer doors, must be completed.

5.1.2 Building layers, building components
5.1.2.1 Supporting base

The supporting base shall be prepared in accordance with relevant standards. Any pipe work or conduits shall

be fixed and encased to provide a level base upon which thermal insulation and/or acoustic insulation is added

before laying the heating pipes. In this respect, the necessary structural height shall be taken into account.

Where service pipes are installed within the insulating layer, they must be protected against temperature

change in accordance with national regulations.
5.1.2.2 Insulating layers, perimeter insulating strip
5.1.2.2.1 Insulating layers

The resistance R of the insulating layer of the heating/cooling system is specified in Table 2. These

λ,ins

requirements are for heating and cooling systems. For cooling systems only, these values are recommended.

2 © ISO 2012 – All rights reserved
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kSIST FprEN ISO 11855-5:2015
ISO 11855-5:2012(E)

Table 2 — Minimum thermal resistance of insulating layers below the pipes of heating/cooling

systems (m K)/W
Unheated or External design temperature below
Heated intermittent heated
room room below or
θ ≥ 0 °C 0 °C > θ ≥ −5 °C -5 °C > θ ≥ −15 °C
d d d
below directly on the
ground
thermal
resistance 0,75 1,25 1,25 1,50 2,00
λ,ins

With ground water level ≤ 5m below the supporting base, the value should be increased.

When installing the insulating layer, the insulating panels shall be butted tightly together. Multiple insulating

layers shall be staggered or placed in such a way that the joints between panels of one layer are out of line

with the next layer.
NOTE National building codes may require higher insulation levels.
5.1.2.2.2 Peripheral insulating strip

Before laying the screed, a peripheral insulating strip (edge joint) shall be placed along the walls and other building

components penetrating the screed and rfi mly secured to the supporting base (e.g. door frames, pillars and risers).

The peripheral insulating strip shall rise from the supporting base up to the surface of the finished floor and

permit a movement of the screed of at least 5 mm.

In the case of multiple insulating layers, the peripheral insulating strip shall be placed before application of

the upper insulating layer. When laying the screed, the peripheral insulating strip shall be secured against any

change in position. The top part of the peripheral insulating strip which rises over the finished floor shall not be

cut off until completion of the floor covering and, in the case of textile and plastic coverings, hardening of the filler.

5.1.2.3 Protection layer

Before laying the screed, the insulating layer shall be covered with a protective layer consisting of a polyethylene

film of at least 0,15 mm thickness, with a minimum of 80 mm overlap, or with another product of equivalent function.

In accordance with 5.1.2.2.2, the protective layer shall be turned pulled up above the upper edge of the

peripheral insulating strip unless the strip itself fulfils the function of protection. The peripheral insulatin

...

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