SIST-TP CEN/TR 12098-6:2023

Energy performance of buildings - Controls for heating systems - Part 6: Accompanying TR EN 12098-1:2022 - Modules M3-5,6,7,8

This document refers to FprEN 12098-1:2022, Energy performance of buildings - Controls for heating systems - Part 1: Control equipment for hot water heating systems - Modules M3-5, 6, 7, 8.
It contains information to support the correct understanding, use and national adaption of FprEN 12098-1:2022.
This document does not contain any normative provisions.

Energieeffizienz von Gebäuden - Mess-, Steuer- und Regeleinrichtungen für Heizungen - Teil 6: Begleitender TR zu EN 12098-1:2022 - Module M3-5,6,7,8

Energijske lastnosti stavb - Naprave za regulacijo sistemov za ogrevanje - 6. del: Razlaga in utemeljitev TR EN 12098-1:2022 - Moduli M3-5, 6, 7, 8

Ta dokument se navezuje na standard FprEN 12098-1:2022, Energijske lastnosti stavb - Naprave za regulacijo sistemov za ogrevanje - 1. del: Naprave za regulacijo toplovodnih sistemov za ogrevanje - Moduli M3-5, 6, 7, 8.
Vsebuje informacije za podporo pravilnega razumevanja, uporabe in nacionalne prilagoditve standarda FprEN 12098-1:2022.
Ta dokument ne vsebuje nobenih normativnih določb.

General Information

• Status: Published
• Public Enquiry End Date: 21-Sep-2022
• Publication Date: 13-Dec-2022
• ICS: 91.140.10 - Central heating systems
• ICS: 97.120 - Automatic controls for household use
• Technical Committee: OGS - Heating for buildings
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 08-Dec-2022
• Due Date: 12-Feb-2023
• Completion Date: 14-Dec-2022
• Directive: 2010/31/EU - Directive 2010/31/eu of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings (recast)
• Mandate: M/480 - Mandate to CEN, CENELEC and ETSI for the elaboration and adoption of standards for a methodology calculating the integrated energy performance of buildings and promoting the energy efficiency of buildings, in accordance with the terms set in the recast of the Directive on the energy performance buildings (2010/31/EU)
• Ref Project: CEN/TR 12098-6:2022 - Energy performance of buildings - Controls for heating systems - Part 6: Accompanying TR EN 12098-1:2022 - Modules M3-5,6,7,8

Relations

• Replaces: SIST-TP CEN/TR 12098-8:2018 - Controls for heating systems - Part 8: Accompanying TR prEN 12098-5:2015 - Modules M3-5,6,7,8
• Effective Date: 07-Dec-2022
• Replaces: SIST-TP CEN/TR 12098-6:2018 - Controls for heating systems - Part 6: Accompanying TR prEN 12098-1:2015 - Modules M3-5,6,7,8
• Effective Date: 07-Dec-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TP CEN/TR 12098-6:2023
01-februar-2023
Nadomešča:
SIST-TP CEN/TR 12098-6:2018
SIST-TP CEN/TR 12098-8:2018
Energijske lastnosti stavb - Naprave za regulacijo sistemov za ogrevanje - 6. del:
Razlaga in utemeljitev TR EN 12098-1:2022 - Moduli M3-5, 6, 7, 8
Energy performance of buildings - Controls for heating systems - Part 6: Accompanying
TR EN 12098-1:2022 - Modules M3-5,6,7,8
Energieeffizienz von Gebäuden - Mess-, Steuer- und Regeleinrichtungen für Heizungen -
Teil 6: Begleitender TR zu EN 12098-1:2022 - Module M3-5,6,7,8
Ta slovenski standard je istoveten z: CEN/TR 12098-6:2022
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
SIST-TP CEN/TR 12098-6:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST-TP CEN/TR 12098-6:2023

---------------------- Page: 2 ----------------------
SIST-TP CEN/TR 12098-6:2023


CEN/TR 12098-6
TECHNICAL REPORT

RAPPORT TECHNIQUE

November 2022
TECHNISCHER REPORT
ICS 91.140.10; 97.120 Supersedes CEN/TR 12098-6:2016, CEN/TR 12098-
8:2016
English Version

Energy performance of buildings - Controls for heating
systems - Part 6: Accompanying TR EN 12098-1:2022 -
Modules M3-5,6,7,8
 Energieeffizienz von Gebäuden - Mess-, Steuer- und
Regeleinrichtungen für Heizungen - Teil 6:
Begleitender TR zu EN 12098-1:2022 - Module M3-
5,6,7,8


This Technical Report was approved by CEN on 23 October 2022. It has been drawn up by the Technical Committee CEN/TC 247.

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.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 12098-6:2022 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
SIST-TP CEN/TR 12098-6:2023
CEN/TR 12098-6:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviations . 6
4.1 Symbols . 6
4.2 Abbreviations . 6
5 Control heating systems, main design rules . 7
5.1 Control heating systems, main design rules, general . 7
5.2 Partitioning control heating zones in buildings . 7
5.2.1 General . 7
5.2.2 Emission control . 8
6 Control heating functions and their impact . 9
6.1 Flow temperature control . 9
6.1.1 General . 9
6.1.2 OTC generation and storage impact . 10
6.1.3 OTC control distribution impact . 10
6.1.4 OTC control emission impact . 11
6.2 Auto tuning heating curve parameters . 11
6.3 Compensation by emitters energy demand transmission . 11
6.4 Other meteorological variables and forecast . 11
6.5 Optimum Start-stop scheduling . 11
6.5.1 General . 11
6.5.2 OSS generation and storage impact . 11
6.5.3 OSS distribution impact . 12
6.5.4 OSS emission impact . 13
6.6 Summer-winter switch . 13
6.7 Pumps control . 13
7 Integrated functions in control systems and their impact . 14
7.1 Integrated functions . 14
7.2 Central control effect on room temperature control . 14
7.2.1 General . 14
7.2.2 Flow temperature control accuracy . 15
7.2.3 Heating curve adaptation . 15
7.2.4 Calculating contribution of central control to emission control. 15
Annex A (informative) Applications of heating control functions for buildings . 18
Bibliography . 20

2

---------------------- Page: 4 ----------------------
SIST-TP CEN/TR 12098-6:2023
CEN/TR 12098-6:2022 (E)
European foreword
This document (CEN/TR 12098-6:2022) has been prepared by Technical Committee CEN/TC 247
“Building Automation, Controls and Building Management”, the secretariat of which is held by SNV.
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 CEN/TR 12098-6:2016 and CEN/TR 12098-8:2016.
The most important changes in comparison with CEN/TR 12098-6:2016 are:
— respecting the presentation of this project in the frame EPB in accordance with the drafting rules;
— improvements in line with EN 12098-5:2017.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
3

---------------------- Page: 5 ----------------------
SIST-TP CEN/TR 12098-6:2023
CEN/TR 12098-6:2022 (E)
Introduction
This document is part of the set of EPB (Energy Performance of Building) standards that aim to support
the implementation of the Energy Performance of Buildings Directive (EPBD). This document contains
informative content for users to properly understand, apply and nationally adapt the EPB standards.
This document follows the basic principles (CEN/TS 16628, Energy Performance of Buildings — Basic
Principles for the set of EPB standards) and detailed technical rules (CEN/TS 16629, Energy Performance
of Buildings — Detailed Technical Rules for the set of EPB-standards) elaborated by CEN.
The detailed technical rules CEN/TS 16629 ask for a clear separation between normative and informative
contents:
— to avoid flooding and confusing the actual normative part with informative content;
— to reduce the page count of the actual standard;
— to facilitate understanding of the package.
Therefore, each EPB standard should be accompanied by an informative technical report, like this one,
where all informative content is collected.
Table 1 shows the relative position of this document within the EPB set of standards.
4

---------------------- Page: 6 ----------------------
SIST-TP CEN/TR 12098-6:2023
CEN/TR 12098-6:2022 (E)
Table 1 — Position of this document (in casu M3–5, 6, 7, 8), within the modular structure of the
set of EPB standards
 Overarching Building Technical Building System
(as such)
sub1 M1 M2  M3 M4 M5 M6 M7 M8 M9 M10 M11
1 General General General
Common terms
and definitions; Building
2 Needs
symbols, units Energy Needs
and subscripts
(Free) Indoor
Maximum
Conditions
3 Application Load and
without
Power
Systems
Ways to Ways to
Ways to
Express Express
4 Express Energy
Energy Energy
Performance
Performance Performance
Building
Heat Transfer
Functions and Emission and
5 by x
Building control
Transmission
Boundaries
Building Heat Transfer
Occupancy and by Infiltration Distribution
6 x
Operating and and control
Conditions Ventilation
Aggregation of
Energy Services Internal Heat Storage and
7 x
and Energy Gains control
Carriers
Building Solar Heat Generation
8 x
Partitioning Gains and control
Load
Building
Calculated dispatching
Dynamics
9 Energy and
(thermal
Performance operating
mass)
conditions
Measured Measured Measured
10 Energy Energy Energy
Performance Performance Performance
11 Inspection Inspection Inspection
Ways to
12 Express Indoor  BMS
Comfort
External
13 Environment
Conditions
Economic
14
Calculation
NOTE The shaded modules are not applicable.
5
Submodule
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic Hot waters
Lighting
Building automation
and control
PV, wind.

---------------------- Page: 7 ----------------------
SIST-TP CEN/TR 12098-6:2023
CEN/TR 12098-6:2022 (E)
1 Scope
This document refers to EN 12098-1:2022, Energy performance of buildings — Controls for heating
systems — Part 1: Control equipment for hot water heating systems — Modules M3-5, 6, 7, 8.
It contains information to support the correct understanding, use and national adaption of
EN 12098-1:2022.
This document does not contain any normative provisions.
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 12098-1:2022, Energy performance of buildings — Controls for heating systems — Part 1: Control
equipment for hot water heating systems — Modules M3-5, 6, 7, 8
EN ISO 7345, Thermal performance of buildings and building components — Physical quantities and
definitions (ISO 7345)
EN ISO 52000-1:2017, Energy performance of buildings — Overarching EPB assessment — Part 1: General
framework and procedures (ISO 52000-1)
EN ISO 52120-1:2022, Energy performance of buildings — Contribution of building automation, controls
and building management — Part 1: General framework and procedures (ISO 52120-1)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 7345, EN ISO 52000-1:2017,
EN 12098-1:2022 and EN ISO 52120-1:2022 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
4 Symbols and abbreviations
4.1 Symbols
For the purposes of this document, the symbols given in EN ISO 52000-1:2017 and EN 12098-1:2022
apply.
4.2 Abbreviations
Table 2 shows the abbreviations used in this document.
Table 2 — Abbreviations
Abbreviations Explanation
OTC outside temperature compensated
RTC room temperature control
FSS fixed start-stop scheduling
OSS optimum start-stop scheduling
TRV thermostatic radiator valve
6

---------------------- Page: 8 ----------------------
SIST-TP CEN/TR 12098-6:2023
CEN/TR 12098-6:2022 (E)
5 Control heating systems, main design rules
5.1 Control heating systems, main design rules, general
An efficient heating control system consists of integrated functions applied to all parts of the water
heating system: emission or room control by TRV or RTC, flow temperature control by OTC control, FSS,
OSS, pumps and generators sequencing and controls, thermal storage management, cost optimization of
thermal resources taking account of smart metering, predictable or detected occupancy.
5.2 Partitioning control heating zones in buildings
5.2.1 General
To efficiently control heating, the flow temperature level of the generation and distribution system should
satisfy heat demand to the lowest flow temperature. For this purpose, flow temperature is compensated
by outside temperature and scheduled for intermittent heating in relation to conditions of use. For
efficiency of control systems:
— The heating system distribution building should be partitioned into zones or spaces with uniform
conditions of use.
Partitioning of heating systems described in EN ISO 52000-1:2017, Clause 10, D.2, D.3, may usefully be
applied for the design of heating systems.
— The zone partitioning of the building should take into account thermal characteristics of emitters (all
identical emitters) of a zone.
— BAC heating control system should have multiple controls and intermittent scheduling adapted to
zones or spaces conditions of use. Special attention should be given to keep watch for update set
points and schedulers to real conditions of use and needs, during exploitation.
To satisfy these indications, size of zones should be limited.
2
NOTE 1 An indication is given in EN 15316-3:2017, A.2: limit zones area to 1 000 m (one pump for a maximum
2
of 1 000 m ).
As a general rule, heating control systems involves integrating many functions applied to central
(generation, storage), zone (distribution) and room (emission) parts of heating systems.
OTC control, OSS and complementary integrated functions are specified in EN 12098-1:2022 and fulfil
items in EN ISO 52120-1:2022, Table 5, functions 1.1 to 1.10.
NOTE 2 Better control and scheduling of heating systems imply a data communication network linking control
devices for integration of these functions and other technical building management capabilities for energy
performance.
For these parts, objectives of control functions are the lowest flow temperature, the longest reduced or
stop heat generation periods, and pumps operation.
Generation (see EN 15316-4-1) and distribution (see EN 15316–3:2017) parts are controlled acting
water flow temperature whilst emission is controlled via the flow through emitters.
These central controls apply to buildings, zones, and spaces (see Figure 1), taking into account thermal
characteristics and conditions of use (see EN ISO 52000-1:2017).
Emitters of a zone or space controlled by an OTC controller should be of the same model, for conformity
with a single heating curve shape common to all emitters of the controlled zone, i.e. do not mix different
types of steel radiators, heating floor or fan coil on a distribution controlled by an OTC controller.
7

---------------------- Page: 9 ----------------------
SIST-TP CEN/TR 12098-6:2023
CEN/TR 12098-6:2022 (E)
5.2.2 Emission control
Individual control of emitters or RTC completes central control by individual emitter’s controllers acting
flow through emitters. The aim of individual control consists in adapting conditions of operation
(individual set point, individual scheduling) to consumers' needs (see EN ISO 52120-1:2022, Figure 3)
and to compensate room heat gains, reducing heating for comfort and energy saving.
However, individual room temperature control performance does not depend only on individual
controllers; it depends also on the flow temperature central (generation, distribution) control, mainly for
these cases:
— Emitters are not equipped with efficient electronic individual RTC (conform to EN 15500-1:2017).
— Users are not encouraged to adapt the set point of their room temperature controller considering
their comfort needs related to energy consumption.
— Heated rooms or spaces do not permit to measure a representative temperature for individual
(closed loop) RTC, e.g.: entrance, corridor, reception hall, exhibition hall, atrium. Emission control is
operated only by the flow temperature control (generation, distribution parts).
However:
— For accuracy of a room controller, the flow temperature of emitters should be adapted to the heating
load, i.e. related to the main influence, the outside temperature. OTC control improves control
efficiently of individual controllers limiting the role of these controllers to compensate heat gains and
avoiding hanging process of these closed control loops.
— To avoid energy wasting by unusual use, inattentive settings or defaults of room controllers, the
central OTC control limit the higher room temperature able to be reached.
EXAMPLE Room temperature able to be reached by OTC control may be limited to 22 °C, room controller
reduces this level, modulating flow through emitter.
8

---------------------- Page: 10 ----------------------
SIST-TP CEN/TR 12098-6:2023
CEN/TR 12098-6:2022 (E)

Key
1 generation
2 distribution
3 emission
4 OTC controller
5 electronic room controller
S1, S2, S3 elementary spaces
Z1, Z2 zones
Figure 1 — Control heating systems parts
6 Control heating functions and their impact
6.1 Flow temperature control
6.1.1 General
Water temperature control by OTC control (function in standalone devices or BAC systems) should be
applied to generation and distribution parts (see Figure 1).
Annex A gives applications of heating control functions for buildings.
9

---------------------- Page: 11 ----------------------
SIST-TP CEN/TR 12098-6:2023
CEN/TR 12098-6:2022 (E)
6.1.2 OTC generation and storage impact
Flow temperature control improves efficiency generators, minimizes heat losses of tanks and associated
equipment (see EN 15316-4-1:2017).
When controlling flow temperature to the lowest during normal conditions of use, stopping or reducing
heating during reduced heating needs periods (intermittent control during heating season) and stopping
heating (summer/winter switch), the effects of OTC control impact on generation part are:
— Improve efficiency of generators, reduce losses. EN 15316-3:2017 gives algorithms to calculate
efficiency related to the mean temperature.
— Reduce heat losses of thermal storages, pipes, auxiliaries, and other equipment (e.g. valves). The
EN 15316 series gives algorithms to calculate heat losses for these periods.
— Reduce pumps consumption during the same intermittent periods and summer-winter switch. The
EN 15316 series gives algorithms to calculate pump consumptions for these periods
...

SLOVENSKI STANDARD
kSIST-TP FprCEN/TR 12098-6:2022
01-september-2022
Energijske lastnosti stavb - Naprave za regulacijo sistemov za ogrevanje - 6. del:
Razlaga in utemeljitev TR EN 12098-1:2022 - Moduli M3-5, 6, 7, 8
Energy performance of buildings - Controls for heating systems - Part 6: Accompanying
TR EN 12098-1:2022 - Modules M3-5,6,7,8
Ta slovenski standard je istoveten z: FprCEN/TR 12098-6
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
kSIST-TP FprCEN/TR 12098-6:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022

---------------------- Page: 2 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FINAL DRAFT
TECHNICAL REPORT
FprCEN/TR 12098-6
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
June 2022
ICS 91.140.10; 97.120 Will supersede CEN/TR 12098-6:2016,
CEN/TR 12098-8:2016
English Version
Energy performance of buildings - Controls for heating
systems - Part 6: Accompanying TR EN 12098-1:2022 -
Modules M3-5,6,7,8
This draft Technical Report is submitted to CEN members for Vote. It has been drawn up by the Technical Committee CEN/TC
247.
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.
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 Technical Report. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a Technical Report.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprCEN/TR 12098-6:2022 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FprCEN/TR 12098-6:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviations . 6
4.1 Symbols . 6
4.2 Abbreviations . 6
5 Control heating systems, main design rules . 7
5.1 Control heating systems, main design rules, general . 7
5.2 Partitioning control heating zones in buildings . 7
5.2.1 General . 7
5.2.2 Emission control . 8
6 Control heating functions and they impact . 9
6.1 Flow temperature control . 9
6.1.1 General . 9
6.1.2 OTC generation and storage impact . 9
6.1.3 OTC control distribution impact . 10
6.1.4 OTC control emission impact . 10
6.2 Auto tuning heating curve parameters . 11
6.3 Compensation by emitters energy demand transmission . 11
6.4 Other meteorological variables and forecast . 11
6.5 Optimum Start-stop scheduling . 11
6.5.1 General . 11
6.5.2 OSS generation and storage impact . 11
6.5.3 OSS distribution impact . 11
6.5.4 OSS emission impact . 12
6.6 Summer-winter switch . 13
6.7 Pumps control . 13
7 Integrated functions in control systems and their impact . 14
7.1 Integrated functions . 14
7.2 Central control effect on room temperature control . 14
7.2.1 General . 14
7.2.2 Flow temperature control accuracy . 14
7.2.3 Heating curve adaptation . 14
7.2.4 Calculating contribution of central control to emission control. 15
Annex A (informative) Applications of heating control functions for buildings . 17
Bibliography . 19
2

---------------------- Page: 4 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FprCEN/TR 12098-6:2022 (E)
European foreword
This document (FprCEN/TR 12098-6:2022) has been prepared by Technical Committee CEN/TC 247
“Building Automation, Controls and Building Management”, the secretariat of which is held by SNV.
This document is currently submitted to the Vote on TR.
This document will supersede CEN/TR 12098-6:2016 and CEN/TR 12098-8:2016.
The most important changes in comparison with CEN/TR 12098-6:2016 are:
— respecting the presentation of this project in the frame EPB in accordance with the drafting rules;
— improvements in line with EN 12098-5:2017.
3

---------------------- Page: 5 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FprCEN/TR 12098-6:2022 (E)
Introduction
This document is part of the set of EPB (Energy Performance of Building) standards that aim to support
the implementation of the Energy Performance of Buildings Directive (EPBD). This document contains
informative content for users to properly understand, apply and nationally adapt the EPB standards.
This document follows the basic principles (CEN/TS 16628, Energy Performance of Buildings - Basic
Principles for the set of EPB standards) and detailed technical rules (CEN/TS 16629, Energy Performance
of Buildings - Detailed Technical Rules for the set of EPB-standards) elaborated by CEN.
The detailed technical rules CEN/TS 16629 ask for a clear separation between normative and informative
contents:
— to avoid flooding and confusing the actual normative part with informative content;
— to reduce the page count of the actual standard;
— to facilitate understanding of the package.
Therefore, each EPB standard should be accompanied by an informative technical report, like this one,
where all informative content is collected.
Table 1 shows the relative position of this document within the EPB set of standards.
4

---------------------- Page: 6 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FprCEN/TR 12098-6:2022 (E)
Table 1 — Position of this document (in casu M3–5, 6, 7, 8), within the modular structure of the
set of EPB standards
 Overarching Building Technical Building System
(as such)
sub1 M1 M2  M3 M4 M5 M6 M7 M8 M9 M10 M11
1 General General General
Common terms
and definitions; Building
2 Needs
symbols, units Energy Needs
and subscripts
(Free) Indoor
Maximum
Conditions
3 Application Load and
without
Power
Systems
Ways to Ways to
Ways to
Express Express
4 Express Energy
Energy Energy
Performance
Performance Performance
Building
Heat Transfer
Functions and Emission and
5 by x
Building
control
Transmission
Boundaries
Building Heat Transfer
Occupancy and by Infiltration Distribution
6 x
Operating and and control
Conditions Ventilation
Aggregation of
Energy Services Internal Heat Storage and
7 x
and Energy Gains control
Carriers
Building Solar Heat Generation
8 x
Partitioning Gains and control
Building Load
Calculated
Dynamics dispatching
9 Energy
(thermal and operating
Performance
mass) conditions
Measured Measured Measured
10 Energy Energy Energy
Performance Performance Performance
11 Inspection Inspection Inspection
Ways to
12 Express Indoor  BMS
Comfort
External
13 Environment
Conditions
Economic
14
Calculation
NOTE The shaded modules are not applicable.

5
Submodule
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic Hot waters
Lighting
Building automation
and control
PV, wind,.

---------------------- Page: 7 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FprCEN/TR 12098-6:2022 (E)
1 Scope
This document refers to FprEN 12098-1:2022, Energy performance of buildings — Controls for heating
systems — Part 1: Control equipment for hot water heating systems - Modules M3-5, 6, 7, 8.
It contains information to support the correct understanding, use and national adaption of
FprEN 12098-1:2022.
This document does not contain any normative provisions.
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.
FprEN 12098-1:2022, Energy performance of buildings - Controls for heating systems - Part 1: Control
equipment for hot water heating systems - Modules M3-5, 6, 7, 8
EN ISO 7345, Thermal performance of buildings and building components - Physical quantities and
definitions (ISO 7345)
EN ISO 52120-1:2022, Energy performance of buildings - Contribution of building automation, controls and
building management - Part 1: General framework and procedures (ISO 52120-1)
EN ISO 52000-1:2017, Energy performance of buildings - Overarching EPB assessment - Part 1: General
framework and procedures (ISO 52000-1)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 7345, EN ISO 52000-1:2017,
FprEN 12098-1:2022 and EN ISO 52120-1:2022 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
4 Symbols and abbreviations
4.1 Symbols
For the purposes of this document, the symbols given in EN ISO 52000-1:2017 and FprEN 12098-1:2022
apply.
4.2 Abbreviations
Table 2 shows the abbreviations used in this document.
Table 2 — Abbreviations
Abbreviations Explanation
OTC outside temperature compensated
RTC room temperature control
FSS fixed start-stop scheduling
OSS optimum start –stop scheduling
TRV thermostatic radiator valve
6

---------------------- Page: 8 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FprCEN/TR 12098-6:2022 (E)
5 Control heating systems, main design rules
5.1 Control heating systems, main design rules, general
An efficient heating control system consists of integrated functions applied to all parts of the water
heating system: emission or room control by TRV or RTC, flow temperature control by OTC control, FSS,
OSS, pumps and generators sequencing and controls, thermal storage management, cost optimization of
thermal resources taking account of smart metering, predictable or detected occupancy.
5.2 Partitioning control heating zones in buildings
5.2.1 General
To efficiently control heating, the flow temperature level of the generation and distribution system should
satisfy heat demand to the lowest flow temperature. For this purpose, flow temperature is compensated
by outside temperature and scheduled for intermittent heating in relation to conditions of use. For
efficiency of control systems:
— The heating system distribution building should be partitioned into zones or spaces with uniform
conditions of use;
Partitioning of heating systems described in EN 52000-1:2017, Clause 10, D.2, D.3, may usefully be
applied for the design of heating systems.
— The zone partitioning of the building should take into account thermal characteristics of emitters (all
identical emitters) of a zone;
— BAC heating control system should have multiple controls and intermittent scheduling adapted to
zones or spaces conditions of use. Special attention should be given to keep watch for update set
points and schedulers to real conditions of use and needs, during exploitation.
To satisfy these indications, size of zones should be limited.
2
NOTE 1 An indication is given in EN 15316-3:2017, A.2: limit zones area to 1 000 m (one pump for a maximum
2
of 1 000 m ).
As a general rule, heating control systems involves integrating many functions applied to central
(generation, storage), zone (distribution) and room (emission) parts of heating systems.
OTC control, OSS and complementary integrated functions are specified in FprEN 12098-1:2022 and fulfil
items in EN ISO 52120-1:2022, Table 5, functions 1.1 to 1.10.
NOTE 2 Better control and scheduling of heating systems imply a data communication network linking control
devices for integration of these functions and other technical building management capabilities for energy
performance.
For these parts, objectives of control functions are the lowest flow temperature, the longest reduced or
stop heat generation periods, and pumps operation.
Generation (see EN 15316-4-1) and distribution (see EN 15316–3:2017) parts are controlled acting
water flow temperature whilst emission is controlled via the flow through emitters.
These central controls apply to buildings, zones, and spaces (see Figure 1), taking into account thermal
characteristics and conditions of use (see EN ISO 52000-1:2017).
Emitters of a zone or space controlled by an OTC controller should be of the same model, for conformity
with a single heating curve shape common to all emitters of the controlled zone, i.e. don’t mix different
types of steel radiators, heating floor or fan coil on a distribution controlled by an OTC controller.
7

---------------------- Page: 9 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FprCEN/TR 12098-6:2022 (E)
5.2.2 Emission control
Individual control of emitters or RTC completes central control by individual emitter’s controllers acting
flow through emitters. The aim of individual control consists in adapting conditions of operation
(individual set point, individual scheduling) to consumers' needs (see EN ISO 52120-1:2022, Figure 3)
and to compensate room heat gains, reducing heating for comfort and energy saving.
However, individual room temperature control performance doesn’t depend only on individual
controllers; it depends also on the flow temperature central (generation, distribution) control, mainly for
these cases:
— Emitters are not equipped with efficient electronic individual RTC (conform to EN 15500-1:2017).
— Users are not encouraged to adapt the set point of their room temperature controller considering
their comfort needs related to energy consumption.
— Heated rooms or spaces do not permit to measure a representative temperature for individual
(closed loop) RTC, e.g.: entrance, corridor, reception hall, exhibition hall, atrium. Emission control is
operated only by the flow temperature control (generation, distribution parts).
However:
— For accuracy of a room controller, the flow temperature of emitters should be adapted to the heating
load, i.e. related to the main influence, the outside temperature. OTC control improves control
efficiently of individual controllers limiting the role of these controllers to compensate heat gains and
avoiding hanging process of these closed control loops;
— To avoid energy wasting by unusual use, inattentive settings or defaults of room controllers, the
central OTC control limit the higher room temperature able to be reached.
EXAMPLE Room temperature able to be reached by OTC control may be limited to 22 °C, room controller
reduces this level, modulating flow through emitter.
8

---------------------- Page: 10 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FprCEN/TR 12098-6:2022 (E)

Key
1 generation
2 distribution
3 emission
4 OTC controller
5 electronic room controller
S1, S2, S3 elementary spaces
Z1, Z2 zones
Figure 1 — Control heating systems parts
6 Control heating functions and their impact
6.1 Flow temperature control
6.1.1 General
Water temperature control by OTC control (function in standalone devices or BAC systems) should be
applied to generation and distribution parts (see Figure 1).
Annex A gives applications of heating control functions for buildings.
6.1.2 OTC generation and storage impact
Flow temperature control improves efficiency generators, minimizes heat losses of tanks and associated
equipment (see EN 15316-4-1:2017).
9

---------------------- Page: 11 ----------------------
kSIST-TP FprCEN/TR 12098-6:2022
FprCEN/TR 12098-6:2022 (E)
When controlling flow temperature to the lowest during normal conditions of use, stopping or reducing
heating during reduced heating needs periods (intermittent control during heating season) and stopping
heating (summer/winter switch), the effects of OTC control impact on generation part are:
— Improve efficiency of generators, reduce losses. EN 15316-3:2017 gives algorithms to calculate
efficiency related to the mean temperature.
— Reduce heat losses of thermal storages, pipes, auxiliaries, and other equipment (e.g. valves). The
EN 15316 series gives algorithms to calculate heat losses for these periods.
— Reduce pumps consumption during the same intermittent periods and summer-winter switch. The
EN 15316 series gives algorithms to calculate pump consumptions for these periods.
Table 3 shows the impact of OTC flo
...