FprEN ISO 11855-5

Building environment design - Embedded radiant heating and cooling systems - Part 5: Installation (ISO/FDIS 11855-5:2021)

Umweltgerechte Gebäudeplanung - Flächenintegrierte Strahlheizungs- und -kühlsysteme - Teil 5: Installation (ISO/FDIS 11855-5:2021)

Dieses Dokument legt Anforderungen für die Installation flächenintegrierter Strahlungsheiz- und  kühlsysteme fest. Es werden allgemeine und einheitliche Anforderungen an die Auslegung und Konstruktion der Fußboden-, Decken- und Wandheiz- und  kühlsysteme bestimmt, um die Tauglichkeit der Heiz- bzw. Kühlsysteme für ihre jeweilige Anwendung sicherzustellen. Die in diesem Dokument festgelegten Anforderungen sind nur für die Komponenten der Heiz- bzw. Kühlsysteme sowie für die Elemente, die Teil der Heiz- bzw. Kühloberfläche sind und im Zusammenhang mit dem Heiz- bzw. Kühlsystem installiert werden, anwendbar.
Dieses Dokument ist für integrierte Flächenheiz- und  kühlsysteme mit Wasserdurchströmung in Wohn-, Gewerbe- und Industriegebäuden anwendbar. Die Verfahren sind für in Wände, Boden und Deckenkonstruktionen flächenintegrierte Systeme ohne offene Luftspalte anwendbar. Die Verfahren sind nicht anwendbar für Flächensysteme mit offenen Luftspalten, die nicht in die Gebäudestruktur eingebunden sind.

Conception de l'environnement des bâtiments - Systèmes intégrés de chauffage et de refroidissement par rayonnement - Partie 5 : Installation (ISO/FDIS 11855-5:2021)

Načrtovanje okolja v stavbah - Vgrajeni hladilni in ogrevalni sistemi - 5. del: Vgradnja (ISO/FDIS 11855-5:2021)

General Information

• Status: Not Published
• ICS: 91.040.01 - Buildings in general
• ICS: 91.140.10 - Central heating systems
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: CEN/TC 228 - Heating systems in buildings
• Drafting Committee: CEN/TC 228 - Heating systems in buildings
• Current Stage: 6055 - CEN Ratification completed (DOR) - Publishing
• Due Date: 30-Jul-2021
• Completion Date: 30-Jul-2021
• Ref Project: kSIST FprEN ISO 11855-5:2021 - Building environment design - Embedded radiant heating and cooling systems - Part 5: Installation (ISO/FDIS 11855-5:2021)

RELATIONS

• Revised: EN ISO 11855-5:2015 - Building environment design - Design , dimensioning, installation and control of embedded radiant heating and cooling systems - Part 5: Installation (ISO 11855-5:2012)
• Effective Date: 21-Feb-2018

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 11855-5:2020
01-julij-2020
Načrtovanje okolja v stavbah - Vgrajeni hladilni in ogrevalni sistemi - 5. del:
Vgradnja (ISO/DIS 11855-5:2020)

Building environment design - Embedded radiant heating and cooling systems - Part 5:

Installation (ISO/DIS 11855-5:2020)
Umweltgerechte Gebäudeplanung - Flächenintegrierte Strahlheizungs- und -
kühlsysteme - Teil 5: Installation (ISO/DIS 11855-5:2020)

Conception de l'environnement des bâtiments - Systèmes intégrés de chauffage et de

refroidissement par rayonnement - Partie 5 : Installation (ISO/DIS 11855-5:2020)
Ta slovenski standard je istoveten z: prEN ISO 11855-5
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
91.140.30 Prezračevalni in klimatski Ventilation and air-
sistemi conditioning systems
oSIST prEN ISO 11855-5:2020 en,fr,de

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

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oSIST prEN ISO 11855-5:2020
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oSIST prEN ISO 11855-5:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 11855-5
ISO/TC 205 Secretariat: ANSI
Voting begins on: Voting terminates on:
2020-06-09 2020-09-01
Building environment design — Embedded radiant heating
and cooling systems —
Part 5:
Installation

Conception de l'environnement des bâtiments — Systèmes intégrés de chauffage et de refroidissement par

rayonnement —
Partie 5: Installation
ICS: 91.040.01
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 11855-5:2020(E)
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. ISO 2020
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oSIST prEN ISO 11855-5:2020
ISO/DIS 11855-5:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

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ISO copyright office
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Published in Switzerland
ii © ISO 2020 – All rights reserved
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oSIST prEN ISO 11855-5:2020
ISO/DIS 11855-5:2020(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

5.1.1 General structural preconditions ...................................................................................................................... 2

5.1.2 Building layers, building components ........................................................................................................... 2

5.1.3 Leak test .................................................................................................................................................................................. 9

5.1.4 Initial heating up .............................................................................................................................................................. 9

5.1.5 Floor coverings ...............................................................................................................................................................10

5.2 Heating and cooling systems embedded in ceilings and walls ...................................................................10

5.2.1 General...................................................................................................................................................................................10

5.2.2 General structural preconditions ...................................................................................................................10

5.2.3 Insulation ............................................................................................................................................................................11

5.2.4 Maximum heating fluid flow temperatures ...........................................................................................11

Annex A (informative) Corrosion prevention ...........................................................................................................................................12

Bibliography .............................................................................................................................................................................................................................13

© ISO 2020 – All rights reserved iii
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oSIST prEN ISO 11855-5:2020
ISO/DIS 11855-5:2020(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 and 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 7: Input parameters for the energy calculation

Part 1 specifies 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. Part 2 provides steady-state calculation methods for determination

of the heating and cooling capacity. Part 3 specifies design and dimensioning methods 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 purposes,

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

renewable energy. Part 5 addresses the installation process for the system to operate as intended. Part

6 shows a proper control method of 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. Part 7 presents a calculation method for input parameters to ISO 52031.

iv © ISO 2020 – All rights reserved
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oSIST prEN ISO 11855-5:2020
DRAFT INTERNATIONAL STANDARD ISO/DIS 11855-5:2020(E)
Building environment design — Embedded radiant heating
and cooling systems —
Part 5:
Installation
1 Scope

This part of ISO 11855 establishes requirements for the installation of embedded radiant heating and

cooling systems. It specifies general and 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: Vocabulary, 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 (PE-X)

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

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

chloride) (PVC-C)

ISO 21003-1, Multilayer piping systems for hot and cold water installations inside buildings — Part 1: General

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 2020 – All rights reserved 1
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oSIST prEN ISO 11855-5:2020
ISO/DIS 11855-5:2020(E)
3 Terms and definitions

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

Note 1 to entry 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
D m External diameter of the pipe, including sheathing where used
R m K/W thermal resistance of the insulating layer of the heating/cooling system
λ,ins
s m Thickness of thermal insulation
ins
ϑ °C external design temperature
ϑ °C maximum heating water flow temperatures
V,des,max
λ W/(m·K) Thermal conductivity of the thermal insulation layer
ins
q W/m Heat flow density at the surface
q W/m Outward heat flow density
In Type B systems, thickness of thermal insulation from the outward edge of
s m
the insulation to the inward edge of the pipes (see Figure 2)
s m Thickness of the upper part of the slab
W m Pipe spacing
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

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. If the external

doors and windows are not present before the installation of the radiant system, it is recommended to

close all windows holes, even with provisional systems (in order to avoid too high / low temperatures

and to limit the effect of the speed of the air). Walls plaster must be completed.

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oSIST prEN ISO 11855-5:2020
ISO/DIS 11855-5:2020(E)
5.1.2.2 Vapour barrier and other layer

Before install perimeter insulating strip and insulating layers, depending on the type of flooring (e.g

wood floor, resin floor, ..) and the system's boundary conditions (installation of floor system on the

ground, installation of floor system above unheated environment) must be evaluated the installation

of any other layers, for example vapour barrier or similar, in accordance with national regulations and

with relevant standards.
5.1.2.3 Insulating layers, perimeter insulating strip
5.1.2.3.1 Thermal resistance of insulating layers

The thermal resistance R of the insulating layers of the heating/cooling system shall be calculated

λ,ins
as reported in Table 2.
Table 2 — Thermal resistance of insulating layer
ins
R = (1)
λ ,ins
ins
R is the sum of all the layers
λ,ins
with λ < 0.1 W/(m·K) under the
ins
pipeline and over the structural
bearing. Layers must be continued
and have a certification of λ sup-
ins
plied by the manufacturer.
Figure 1 — Example of layers for the calculation of R - Type A and C
λ,ins
Key
1 Floor covering
2 Weight bearing and thermal diffusion layer
3 Thermal insulation
4 Acoustic insulation (if present))
5 Structural bearing
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oSIST prEN ISO 11855-5:2020
ISO/DIS 11855-5:2020(E)
Table 2 (continued)
R is the sum of all the layers
λ,ins
with λ < 0.1 W/(m·K) under the
ins
pipeline and over the structural
bearing. Layers must be continued
and have a certification of λ sup-
ins
plied by the manufacturer.
Figure 2. Type A and C. System with studs
Key
1 Floor covering
2 Weight bearing and thermal diffusion layer
3 Thermal insulation with studs
4 Acoustic insulation (if present)
5 Structural bearing
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oSIST prEN ISO 11855-5:2020
ISO/DIS 11855-5:2020(E)
Table 2 (continued)
sW⋅−Ds+⋅D
s = (2)
ins
R is the sum of all the layers
λ,ins
with λ < 0.1 W/(m·K) under the
ins
pipeline and over the structural
bearing. Layers must be continued
and have a certification of λ sup-
ins
plied by the manufacturer.
Figure 3. Type B
Key
1 Floor covering
2 Weight bearing and thermal diffusion layer
3 Thermal insulation
4 Acoustic insulation (optional)
5 Lightened screed (if present)
6 Structural bearing
R is the sum of all the layers
λ,ins
with λ < 0.1 W/(m·K) under the
pipeline. Layer
...