SIST EN 12098-1:2023

Energy Performance of Buildings - Controls for heating systems - Part 1: Control equipment for hot water heating systems - Modules M3-5, 6, 7, 8

This European Standard applies to electronic control equipment for heating systems with water as the heating medium and a supply water temperature up to 120 °C.
This control equipment controls the distribution and/or the generation of heat in relation to the outside temperature and time and other reference variables.
This standard covers also controllers that contain an integrated optimum start or an optimum start-stop control function.
Safety requirements on heating systems remain unaffected by this standard.
The dynamic behaviour of the valves and actuators are not covered in this standard.
A multi-distribution and/or multi-generation system needs a coordinated solution to prevent undesired interaction and is not part of this standard.
Table 1 shows the relative position of this standard within the set of EPB standards in the context of the modular structure as set out in EN ISO 52000-1.
NOTE 1   In CEN ISO/TR 52000-2 the same table can be found, with, for each module, the numbers of the relevant EPB standards and accompanying technical reports that are published or in preparation.
NOTE 2   The modules represent EPB standards, although one EPB standard may cover more than one module and one module may be covered by more than one EPB standard, for instance a simplified and a detailed method respectively.

Engergieeffizienz von Gebäuden - Mess-, Steuer- und Regeleinrichtungen für Heizungen - Teil 1: Regeleinrichtungen für Warmwasserheizungen - Module M3-5, 6, 7, 8

Dieses Dokument gilt für elektronische Regeleinrichtungen für Heizungsanlagen mit Wasser als Wärme-träger und einer Vorlauftemperatur bis 120 °C.
Diese Regeleinrichtungen dienen der Steuerung der Wärmeverteilung und/oder  erzeugung in Abhängigkeit von der Außentemperatur, der Zeit und anderen Führungsgrößen.
Dieses Dokument behandelt auch Regeleinrichtungen mit integrierter Einschalt-Optimierungsfunktion oder Ein-/Ausschalt-Optimierungsfunktion.
Sicherheitstechnische Anforderungen an Heizungsanlagen bleiben von diesem Dokument unberührt.
Das dynamische Verhalten von Ventilen und Stellgliedern wird in diesem Dokument nicht behandelt.
Eine Anlage mit mehreren Verteilkreisen und/oder Erzeugern erfordert eine koordinierte Lösung, um unerwünschte Wechselwirkungen zu vermeiden, und ist nicht Gegenstand dieses Dokuments.

Performance énergétique des bâtiments - Régulation pour les systèmes de chauffage - Partie 1 : Equipement de régulation pour les systèmes de chauffage à eau chaude - Modules M3-5, 6, 7, 8

Le présent document s’applique aux dispositifs électroniques de régulation pour les systèmes de chauffage qui utilisent l’eau comme fluide caloporteur, avec une température de l’eau allant jusqu’à 120 °C.
Ces dispositifs de régulation servent à la commande et à la régulation de la distribution et/ou de la production de chaleur en fonction de la température extérieure et du temps, ainsi que d’autres variables de référence.
Le présent document couvre également les régulateurs contenant une fonction intégrée de commande de démarrage optimisé ou de démarrage-arrêt optimisé.
Les exigences de sécurité relatives aux systèmes de chauffage ne sont pas affectées par le présent document.
Le comportement dynamique des vannes et des actionneurs n’est pas couvert par le présent document.
Un système multidistribution et/ou multiproduction nécessite une solution coordonnée pour empêcher toute interaction indésirable, mais un tel système ne relève pas du domaine d’application du présent document.

Energijske lastnosti stavb - Naprave za regulacijo sistemov za ogrevanje - 1. del: Naprave za regulacijo toplovodnih sistemov za ogrevanje - Moduli M3-5, 6, 7, 8

Ta evropski standard se uporablja za elektronske naprave za regulacijo sistemov za ogrevanje, pri katerih je grelni medij voda, ki dosega temperaturo do 120 °C.
Te naprave za regulacijo nadzirajo razporeditev in/ali proizvodnjo toplote glede na zunanjo temperaturo in čas ter druge referenčne spremenljivke.
Ta standard zajema tudi krmilnike z vgrajeno nadzorno funkcijo za optimalni zagon ali optimalni zagon/ustavitev.
Ta standard ne vpliva na varnostne zahteve za sisteme za ogrevanje.
Dinamično obnašanje ventilov in sprožilnikov ni zajeto v tem standardu.
Večdistribucijski in/ali večproizvodni sistem potrebuje usklajeno rešitev, da se preprečijo neželeni medsebojni vplivi, in ni del tega standarda.
Preglednica 1 prikazuje relativno mesto tega standarda znotraj skupine standardov EPB v kontekstu modularne strukture, kot je opredeljeno v standardu EN ISO 52000-1.
OPOMBA 1:   V standardu CEN ISO/TR 52000-2 je za vsak modul mogoče najti enako preglednico s številkami ustreznih standardov EPB in spremnimi tehničnimi poročili, ki so objavljeni ali v pripravi.
OPOMBA 2:   Moduli predstavljajo standarde EPB, čeprav lahko en standard EPB zajema več kot en modul, en modul pa je lahko zajet v več kot enem standardu EPB (na primer poenostavljena metoda in podrobna metoda).

General Information

• Status: Published
• Public Enquiry End Date: 01-Oct-2021
• 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: 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

Relations

• Replaces: SIST EN 12098-5:2018 - Energy Performance of Buildings - Controls for heating systems - Part 5: Start-stop schedulers for heating systems - Modules M3-5,6,7,8
• Effective Date: 07-Dec-2022
• Replaces: SIST EN 12098-1:2018 - Energy Performance of Buildings - Controls for heating systems - Part 1: Control equipment for hot water heating systems - Modules M3-5, 6, 7, 8
• Effective Date: 07-Dec-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 12098-1:2023
01-februar-2023
Nadomešča:
SIST EN 12098-1:2018
SIST EN 12098-5:2018
Energijske lastnosti stavb - Naprave za regulacijo sistemov za ogrevanje - 1. del:
Naprave za regulacijo toplovodnih sistemov za ogrevanje - Moduli M3-5, 6, 7, 8
Energy Performance of Buildings - Controls for heating systems - Part 1: Control
equipment for hot water heating systems - Modules M3-5, 6, 7, 8
Engergieeffizienz von Gebäuden - Mess-, Steuer- und Regeleinrichtungen für Heizungen
- Teil 1: Regeleinrichtungen für Warmwasserheizungen - Module M3-5, 6, 7, 8
Performance énergétique des bâtiments - Régulation pour les systèmes de chauffage -
Partie 1 : Equipement de régulation pour les systèmes de chauffage à eau chaude -
Modules M3-5, 6, 7, 8
Ta slovenski standard je istoveten z: EN 12098-1:2022
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
SIST EN 12098-1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 12098-1:2023

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SIST EN 12098-1:2023


EN 12098-1
EUROPEAN STANDARD

NORME EUROPÉENNE

November 2022
EUROPÄISCHE NORM
ICS 91.140.10; 97.120 Supersedes EN 12098-1:2017, EN 12098-5:2017
English Version

Energy performance of buildings - Controls for heating
systems - Part 1: Control equipment for hot water heating
systems - Modules M3-5, 6, 7, 8
Performance énergétique des bâtiments - Régulation Engergieeffizienz von Gebäuden - Mess-, Steuer- und
pour les systèmes de chauffage - Partie 1 : Equipement Regeleinrichtungen für Heizungen - Teil 1:
de régulation pour les systèmes de chauffage à eau Regeleinrichtungen für Warmwasserheizungen -
chaude - Modules M3-5, 6, 7, 8 Module M3-5, 6, 7, 8
This European Standard was approved by CEN on 26 September 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, 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. EN 12098-1:2022 E
worldwide for CEN national Members.

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Symbols and subscripts .15
4.1 Symbols .15
4.2 Subscripts .15
5 Functionality .15
5.1 Functional objective .15
5.2 Control equipment functionality .16
6 Requirements .17
6.1 Data retention .17
6.2 Characteristic heating curve .17
6.3 Input signal – Sensors .18
6.4 Controller operation modes.18
6.4.1 General.18
6.4.2 Comfort operation mode .18
6.4.3 Economy operation mode .18
6.4.4 Building protection operation mode .19
6.4.5 Automatic operation mode .19
6.5 Frost protection .19
6.6 Additional functions .19
6.6.1 General.19
6.6.2 Summer/winter switch function .19
6.6.3 Set back function .19
6.6.4 Optimum start function .19
6.6.5 Optimum stop function .19
6.7 Switching times .20
6.8 Manual Operation Mode (MOM) .20
6.9 Parameter settings .21
6.10 Factory settings/Default values .21
6.10.1 Characteristic heating curve .21
6.10.2 Switching times/Operating condition .21
6.11 Switching relays .21
6.12 Electrical requirements .21
6.12.1 Electrical connections .21
6.12.2 Supply voltage .21
6.12.3 Electrical safety .21
6.12.4 Electro-magnetic compatibility .21
6.13 Degree of protection .22
6.14 Environmentally induced stress due to temperature .22
6.15 Materials .22
6.16 Use of graphical symbols .22
2

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)
7 Test methods . 22
7.1 Data retention . 22
7.2 Controller operation modes . 22
7.3 Controller characteristic heating curve . 22
7.4 Frost protection . 27
7.5 Switching times . 27
7.6 Manual Operation Mode . 27
7.7 Optimum start-stop function . 27
7.7.1 General . 27
7.7.2 Test conditions . 29
7.7.3 Test run . 29
7.7.4 Test results start optimization . 30
7.8 Test results stop optimization . 31
7.9 Summer/winter switch . 32
7.10 Set back . 32
7.11 Parameter settings . 32
7.12 Factory settings . 32
7.13 Switching relays . 32
7.14 Electrical test . 32
7.15 Degrees of protection . 32
7.16 Environmental individual stress due to temperature . 32
8 Marking . 33
9 Documentation . 33
9.1 Technical documents . 33
9.2 Technical specifications . 33
9.2.1 Controller . 33
9.2.2 Output signals . 34
9.2.3 Input signals (sensors) . 34
9.3 Instruction installation . 34
9.4 User guideline . 34
Bibliography . 35

3

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)
European foreword
This document (EN 12098-1:2022) has been prepared by Technical Committee CEN/TC 247 “Building
Automation, Controls and Building Management”, the secretariat of which is held by SNV.
This 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 May 2023, and conflicting national standards shall be
withdrawn at the latest by May 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12098-1:2017 and EN 12098-5:2017.
In comparison with the previous edition, the following technical modifications have been made:
— respecting the presentation of this project in the frame of EPB in accordance with the drafting rules;
— subclause 6.7 “Switching times” and Table 5 introducing networked clocks improvements in line
with EN 12098-5 modifications have been updated. Consequently, EN 12098-5 becomes obsolete.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
This document is part of the set of standards on the energy performance of buildings (the set of EPB
standards).
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.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
4

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)
Introduction
This document belongs to the family of standards aimed at international harmonization of the
methodology for the assessment of the energy performance of buildings. Throughout, this group of
standards is referred to as a set of called “EPB set of standards”.
As part of the “EPB set of standards” it complies with the requirements for the set of basic EPB
documents EN ISO 52000-1 (see Clause 2), CEN/TS 16628 and CEN/TS 16629 (see [2] and [3])
developed under a mandate given to CEN by the European Commission and the European Free Trade
Association (M/480 [11]).
The standards issued by TC 247 for M/480 belong to the EPB set of standards and are in line with the
over-arching standard (EN ISO 52000-1) and drafted in accordance with the basic principles and
detailed technical rules developed in the Phase I of the mandate.
Also, these standards are clearly identified in the modular structure developed to ensure a transparent
and coherent EPB standard set. BAC (Building Automation and Control) is identified in the modular
structure as Technical Building System M10. However, the standards of TC 247 deal with control
accuracy, control functions and control strategies using standards communications protocol (these last
standards do not belong to the EPB standards set).
To avoid a duplication of calculation due to the BAC (avoid double impact), no calculations are done in
the BAC EPB standard set, but in each underlying standard of the EPB set of standards (from M1 to M9
in the Modular Structure), an IDENTIFIER developed and present in the M10 covered by EN ISO 52120-1
is used where appropriate. This way of interaction is described in detail in the Technical Report
(CEN ISO/TR 52000-2) accompanying the over-arching standard. As a consequence, the Annex A and
Annex B concept as EXCEL sheet with the calculation formulas used in the EPB standards are not
applicable for the standards issued by TC 247 for M/480.
The main target groups of this document are all the users of the set of EPB standards (e.g. architects,
engineers, regulators).
Further target groups are parties wanting to motivate their assumptions by classifying the building
energy performance for a dedicated building stock.
More information is provided in the Technical Report accompanying this document
(CEN/TR 12098-6:2022, [5]).
Table 1 shows the relative position of this document within the set of EPB standards in the context of
the modular structure as set out in EN ISO 52000-1.
NOTE 1 In CEN ISO/TR 52000-2 the same table can be found, with, for each module, the numbers of the relevant
EPB standards and accompanying Technical Reports that are published or in preparation.
NOTE 2 The modules represent EPB standards, although one EPB standard can cover more than one module
and one module can be covered by more than one EPB standard, for instance a simplified and a detailed method,
respectively.
5

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)
Table 1 — Position of this document (in casu M3–5, 6, 7, 8), within the modular structure of the
set of EPB standards
 Over-arching 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 Energy
2 Needs
symbols, units Needs
and subscripts
(Free) Indoor
Maximum
Conditions
3 Application Load and
without
Power
Systems
Ways to
Ways to Express Ways to Express
Express
4 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 Distribution
by Infiltration
6 x
Operating and control
and Ventilation
Conditions
Aggregation of
Energy Services Internal Heat Storage and
7 x
and Energy Gains control
Carriers
Building Generation
8 Solar Heat Gains x
Partitioning and control
Load
Calculated Building
dispatching
9 Energy Dynamics
and operating
Performance (thermal mass)
conditions
Measured Measured
Measured Energy
10 Energy Energy
Performance
Performance Performance
11 Inspection Inspection Inspection
Ways to Express
12  BMS
Indoor Comfort
External
13 Environment
Conditions
Economic
14
Calculation
NOTE The shaded modules are not applicable.
6
Submodule
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic Hot waters
Lighting
Building automation
and control
PV, wind.

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)
1 Scope
This document is applicable to electronic control equipment for heating systems with water as the
heating medium and a supply water temperature up to 120 °C.
This control equipment controls the distribution and/or the generation of heat in relation to the outside
temperature and time and other reference variables.
This document also is also applicable to controllers that contain an integrated optimum start or an
optimum start-stop control function.
Safety requirements on heating systems remain unaffected by this document.
The dynamic behaviour of the valves and actuators are not covered in this document.
A multi-distribution and/or multi-generation system needs a coordinated solution to prevent undesired
interaction and is not part of this document.
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
dated references, only the edition cited applies. For undated references, the latest edition of the
referenced document (including any amendments) applies.
EN 60038, CENELEC standard voltages (IEC 60038)
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60730-1, Automatic electrical controls for household and similar use — Part 1: General requirements
(IEC 60730-1)
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 52000-1:2017)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 7345 and
EN ISO 52000-1:2017 and the following 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/
7

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)
3.1
outside temperature compensated controller
OTC controller
controller optimizing and regulating the generation and/or distribution of heat in relation to the outside
temperature, time and other reference variables
Note 1 to entry: The outside temperature compensated function calculates the flow (supply) temperature in
relation to the outside temperature, based on the heating curve.
Note 2 to entry: The outside temperature optimum start-stop function calculates the pre-heat time and/or stop
time to reach the comfort temperature level in relation with the outside temperature, switch time and several
parameters (e.g. room temperature).
3.2
control equipment
equipment which consists of the OTC controller, and connectors for sensor input signals and output
signals, but does not include the sensors and actuating equipment
Note 1 to entry: See Figure 1.

Key
1 OTC
2 output signals
3 input signals: reference variables
4 input signal: controlled variable
5 actuating equipment
6 heat generation or distribution
Figure 1 — Control equipment for heating systems
3.3
actuating equipment
equipment by which the controller affects the controlled variable
3.4
controlled variable
supply water temperature and/or boiler water temperature as a result of the heating curve in
accordance to the reference variables
Note 1 to entry: The controlled variable is an input signal.
8

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)
3.5
output signal
signal generated by the OTC controller for operating the actuating equipment
3.6
reference variable
outside temperature with or without other influences or variables (e.g. room temperature) used to
determine the setpoint of the controlled variable
Note 1 to entry: The controlled variable is an input signal.
3.7
outside temperature
reference variable that is measured with a sensor fitted outside the building, mainly intended to
measure the ambient air temperature
3.8
room temperature
resulting temperature in the building arising in comfort, economy or building protection operation
mode of the OTC controller
Note 1 to entry: Room temperature can be different for individual rooms.
3.9
characteristic heating curve
relation between the setpoint value of the controlled variable (e.g. supply water temperature) and the
reference variables (outside air temperature) defined by two or more parameters and depending on
operation mode and additional variables
Note 1 to entry: The setpoint of supply water temperature is a function of the outside temperature and the
present room temperature setpoint. The setpoint of supply water temperature as function of the outside
temperature is graphically represented by the heating curve.
3.10
comfort operation mode
mode of operation between the switch-on time and the switch-off time, maintaining comfort room
temperature
Note 1 to entry: Mode of operation for normally occupied rooms.
3.11
economy operation mode
mode of operation between the switch-off time and the switch-on time, maintaining a reduced room
temperature compared to the comfort room temperature
Note 1 to entry: Economy operation mode is a reduced mode.
3.12
building protection operation mode
mode of operation between the switch-off time and the switch-on time, maintaining a room temperature
required for building protection
Note 1 to entry: Building protection operation mode is a reduced mode.
9

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)
3.13
automatic operation mode
mode of operation of equipment when significant control functions are not overridden by the user
Note 1 to entry: The operation mode is selected automatically according to the scheduler, actual date and time.
3.14
summer/winter switch function
seasonal switch on/off of the heating depending on a function of the outside air temperature
3.15
set back function
function, starting when the operation mode changes from comfort to economy or building protection
mode
Note 1 to entry: During set back period, the heating is switched off until the calculated or measured room
temperature drops below the economy or building protection setpoint; the operation mode switches back to
comfort mode or the calculated switch-on time of the optimization start function is reached.
3.16
optimum start function
function, calculating the optimum pre-heat time to reach the comfort temperature level at the beginning
of the comfort occupation period
Note 1 to entry: See Figure 2.
Note 2 to entry: The optimum start functions and the optimum stop functions are illustrated by Figure 3.
Heating periods are different from scheduled occupation periods. These differences, due to thermal inertia, depend
mainly on heating loads (or temperature differences). A start and/or stop optimiser controls these switching
points, using outside and/or room temperatures of their differences in relation to setpoints.
10

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SIST EN 12098-1:2023
EN 12098-1:2022 (E)

Key
T
comfort room temperature
r,cmf
T
reduced room temperature
r,red
t
beginning of comfort occupation period
1
t switch-on time with start optimization (variable start)
2
t
switch-on time without start optimization (fixed start)
3
t
end of comfort occupation period without stop optimization (fixed stop)
4

t switch-off time with stop optimization (variable stop)
5
comfort occupation period: t tt−
t
cmf 4 1
cmf
t time period of wasted heat (energy saving potential with start optimization)
was
NOTE tt− is the optimum start period. tt− is the optimum stop period.
2 1 5 4
Figure 2 — Temperature ti
...

SLOVENSKI STANDARD
oSIST prEN 12098-1:2021
01-september-2021
Energijske lastnosti stavb - Naprave za regulacijo sistemov za ogrevanje - 1. del:
Naprave za regulacijo toplovodnih sistemov za ogrevanje - Moduli M3-5, 6, 7, 8
Energy Performance of Buildings - Controls for heating systems - Part 1: Control
equipment for hot water heating systems - Modules M3-5, 6, 7, 8
Engergieeffizienz von Gebäuden - Mess-, Steuer- und Regeleinrichtungen für Heizungen
- Teil 1: Regeleinrichtungen für Warmwasserheizungen - Module M3-5, 6, 7, 8
Performance énergétique des bâtiments - Régulation pour les systèmes de chauffage -
Partie 1 : Equipement de régulation pour les systèmes de chauffage à eau chaude -
Modules M3-5, 6, 7, 8
Ta slovenski standard je istoveten z: prEN 12098-1
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
oSIST prEN 12098-1:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 12098-1:2021

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oSIST prEN 12098-1:2021


DRAFT
EUROPEAN STANDARD
prEN 12098-1
NORME EUROPÉENNE

EUROPÄISCHE NORM

August 2021
ICS 91.140.10; 97.120 Will supersede EN 12098-1:2017, EN 12098-5:2017
English Version

Energy performance of buildings - Controls for heating
systems - Part 1: Control equipment for hot water heating
systems - Modules M3-5, 6, 7, 8
Performance énergétique des bâtiments - Régulation Engergieeffizienz von Gebäuden - Mess-, Steuer- und
pour les systèmes de chauffage - Partie 1 : Equipement Regeleinrichtungen für Heizungen - Teil 1:
de régulation pour les systèmes de chauffage à eau Regeleinrichtungen für Warmwasserheizungen -
chaude - Modules M3-5, 6, 7, 8 Module M3-5, 6, 7, 8
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 247.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12098-1:2021 E
worldwide for CEN national Members.

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Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 8
3 Terms and definitions . 8
4 Symbols, subscripts and abbreviations. 15
4.1 Symbols . 15
4.2 Subscripts . 15
5 Functionality . 15
5.1 Functional objective . 15
5.2 Control equipment functionality . 16
6 Requirements . 17
6.1 Data retention . 17
6.2 Characteristic heating curve . 17
6.3 Input signal – Sensors . 18
6.4 Controller operation modes . 18
6.4.1 General . 18
6.4.2 Comfort operation mode . 18
6.4.3 Economy operation mode . 18
6.4.4 Building protection operation mode . 19
6.4.5 Automatic operation mode . 19
6.5 Frost protection . 19
6.6 Additional functions . 19
6.6.1 General . 19
6.6.2 Summer/winter switch function . 19
6.6.3 Set back function . 19
6.6.4 Optimum start function . 20
6.6.5 Optimum stop function . 20
6.7 Switching times . 20
6.8 Manual Operation Mode (MOM) . 20
6.9 Parameter settings . 21
6.10 Factory settings/Default values . 21
6.10.1 Characteristic heating curve . 21
6.10.2 Switching times/Operating condition . 21
6.11 Switching relays . 21
6.12 Electrical requirements . 21
6.12.1 Electrical connections . 21
6.12.2 Supply voltage . 21
6.12.3 Electrical safety . 21
6.12.4 Electro-magnetic compatibility . 22
6.13 Degree of protection . 22
6.14 Environmentally induced stress due to temperature . 22
6.15 Materials . 22
6.16 Use of graphical symbols . 22
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7 Test methods . 22
7.1 Data retention . 22
7.2 Controller operation modes . 22
7.3 Controller characteristic heating curve . 22
7.4 Frost protection. 28
7.5 Switching times . 28
7.6 Manual Operation Mode . 28
7.7 Optimum start-stop function . 28
7.7.1 General . 28
7.7.2 Test conditions . 30
7.7.3 Test run . 30
7.7.4 Test results start optimization . 30
7.8 Test results stop optimization . 32
7.9 Summer/winter switch. 33
7.10 Set back . 33
7.11 Parameter settings . 33
7.12 Factory settings . 33
7.13 Switching relays . 33
7.14 Electrical test . 33
7.15 Degrees of protection . 33
7.16 Environmental individual stress due to temperature. 33
8 Marking . 34
9 Documentation . 34
9.1 Technical documents. 34
9.2 Technical specifications . 34
9.2.1 Controller . 34
9.2.2 Output signals . 35
9.2.3 Input signals (sensors) . 35
9.3 Instruction installation . 35
9.4 User guideline . 35
Bibliography . 36
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European foreword
This document (prEN 12098-1:2021) 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 CEN Enquiry.
This document will supersede EN 12098-1:2017 and EN 12098-5:2017.
In comparison with the previous edition, the following technical modifications have been made:
— respecting the presentation of this project in the frame of EPB in accordance with the drafting rules;
— Clause 6.7 “Switching times” and Table 2 introducing networked clocks improvements in line with
EN 12098-5 modifications have been updated. Consequently, EN 12098-5 becomes obsolete.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
This document is part of the set of standards on the energy performance of buildings (the set of EPB
standards).
In case this document is used in the context of national or regional legal requirements, mandatory choices
could be given at national or regional level for such specific applications, in particular for the application
within the context of EU Directives transposed into national legal requirements.
Further target groups are users of the voluntary common European Union certification scheme for the
energy performance of non-residential buildings (EPBD art. 11.9) and any other regional (e.g. Pan
European) parties wanting to motivate their assumptions by classifying the building energy performance
for a dedicated building stock.
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Introduction
This document is part of a series of standards aiming at international harmonization of the methodology
for the assessment of the energy performance of buildings, called the “EPB set of standards”.
As part of the “EPB set of standards” it complies with the requirements for the set of basic EPB documents
EN ISO 52000-1 (see Clause 2), CEN/TS 16628 and CEN/TS 16629 (see [2] and [3]) developed under a
mandate given to CEN by the European Commission and the European Free Trade Association (M/480
[11]).
The standards issued by TC 247 for M/480 belong to the EPB set of standards and are in line with the
over-arching standard (EN ISO 52000-1) and drafted in accordance with the basic principles and detailed
technical rules developed in the Phase I of the mandate.
Also these standards are clearly identified in the modular structure developed to ensure a transparent
and coherent EPB standard set. BAC (Building Automation and Control) is identified in the modular
structure as Technical Building System M10. However, the standards of TC 247 deal with control
accuracy, control functions and control strategies using standards communications protocol (these last
standards do not belong to the EPB standards set).
To avoid a duplication of calculation due to the BAC (avoid double impact), no calculations are done in
the BAC EPB standard set, but in each underlying standard of the EPB set of standards (from M1 to M9 in
the Modular Structure), an IDENTIFIER developed and present in the M10 covered by
1
is used where appropriate. This way of interaction is described in detail in the
EN ISO 52120-1:—
Technical Report (CEN ISO/TR 52000-2) accompanying the over-arching standard. As a consequence, the
Annex A and Annex B concept as EXCEL sheet with the calculation formulas used in the EPB standards
are not applicable for the standards issued by TC 247 for M/480.
The main target groups of this document are all the users of the set of EPB standards (e.g. architects,
engineers, regulators).
Further target groups are parties wanting to motivate their assumptions by classifying the building
energy performance for a dedicated building stock.
More information is provided in the Technical Report accompanying this document
2
(CEN/TR 12098-6:— , [5]).

1
Under preparation. Stage at the time of publication: prEN ISO 52120-1:2020.
2
Under preparation. Stage at the time of publication: prCEN/TR 12098-6:2021.
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1 Scope
This document applies to electronic control equipment for heating systems with water as the heating
medium and a supply water temperature up to 120 °C.
This control equipment controls the distribution and/or the generation of heat in relation to the outside
temperature and time and other reference variables.
This document covers also controllers that contain an integrated optimum start or an optimum start-stop
control function.
Safety requirements on heating systems remain unaffected by this document.
The dynamic behaviour of the valves and actuators are not covered in this document.
A multi-distribution and/or multi-generation system needs a coordinated solution to prevent undesired
interaction and is not part of this document.
Table 1 shows the relative position of this document within the set of EPB standards in the context of the
modular structure as set out in EN ISO 52000-1.
NOTE 1 In CEN ISO/TR 52000-2 the same table can be found, with, for each module, the numbers of the relevant
EPB standards and accompanying Technical Reports that are published or in preparation.
NOTE 2 The modules represent EPB standards, although one EPB standard can cover more than one module and
one module can be covered by more than one EPB standard, for instance a simplified and a detailed method,
respectively.
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Table 1 — Position of this document (in casu M3–5, 6, 7, 8), within the modular structure of the
set of EPB standards
 Over-arching 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 Energy
2 Needs
symbols, units Needs
and subscripts
(Free) Indoor
Maximum
Conditions
3 Application Load and
without
Power
Systems
Ways to
Ways to Express Ways to Express
Express
4 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 Distribution
6 by Infiltration x
Operating
and control
and Ventilation
Conditions
Aggregation of
Energy Services
Internal Heat Storage and
7 x
and Energy Gains control
Carriers
Building Generation
8 Solar Heat Gains x
Partitioning and control
Load
Calculated Building
dispatching
9 Energy Dynamics
and operating
Performance (thermal mass)
conditions
Measured Measured
Measured Energy
10 Energy Energy
Performance
Performance Performance
11 Inspection Inspection Inspection
Ways to Express
12  BMS
Indoor Comfort
External
13 Environment
Conditions
Economic
a

14
Calculation
a
The shaded modules are not applicable.
7
Submodule
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic Hot waters
Lighting
Building automation
and control
PV, wind, .

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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 dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 60038, CENELEC standard voltages (IEC 60038)
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60730-1, Automatic electrical controls for household and similar use - Part 1: General requirements
(IEC 60730-1)
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 52000-1:2017)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 7345 and
EN ISO 52000-1:2017 and the following apply.
3.1
outside temperature compensated controller
OTC controller
controller optimizing and regulating the generation and/or distribution of heat in relation to the outside
temperature, time and other reference variables
Note 1 to entry: The outside temperature compensated function calculates the flow (supply) temperature in
relation to the outside temperature, based on the heating curve.
Note 2 to entry: The outside temperature optimum start-stop function calculates the pre-heat time and/or stop
time to reach the comfort temperature level in relation with the outside temperature, switch time and several
parameters (e.g. room temperature).
3.2
control equipment
equipment which consists of the OTC controller, and connectors for sensor input signals and output
signals, but does not include the sensors and actuating equipment
Note 1 to entry: See Figure 1.
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Key
1 OTC
2 output signals
3 input signals: reference variables
4 input signal: controlled variable
5 actuating equipment
6 heat generation or distribution
Figure 1 — Control equipment for heating systems
3.3
actuating equipment
equipment by which the controller affects the controlled variable
3.4
controlled variable
supply water temperature and/or boiler water temperature as a result of the heating curve in accordance
to the reference variables
Note 1 to entry: The controlled variable is an input signal.
3.5
output signal
signal generated by the OTC controller for operating the actuating equipment
3.6
reference variable
outside temperature with or without other influences or variables (e.g. room temperature) used to
determine the setpoint of the controlled variable
Note 1 to entry: The controlled variable is an input signal.
3.7
outside temperature
reference variable that is measured with a sensor fitted outside the building, mainly intended to measure
the ambient air temperature
3.8
room temperature
resulting temperature in the building arising in comfort, economy or building protection operation mode
of the OTC controller
Note 1 to entry: Room temperature can be different for individual rooms.
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3.9
characteristic heating curve
relation between the setpoint value of the controlled variable (e.g. supply water temperature) and the
reference variables (outside air temperature) defined by two or more parameters and depending on
operation mode and additional variables
Note 1 to entry: The setpoint of supply water temperature is a function of the outside temperature and the
present room temperature setpoint. The setpoint of supply water temperature as function of the outside
temperature is graphically represented by the heating curve.
3.10
comfort operation mode
mode of operation between the switch-on time and the switch-off time, maintaining comfort room
temperature
Note 1 to entry: Mode of operation for normally occupied rooms.
3.11
economy operation mode
mode of operation between the switch-off time and the switch-on time, maintaining a reduced room
temperature compared to the comfort room temperature
Note 1 to entry: Economy operation mode is a reduced mode.
3.12
building protection operation mode
mode of operation between the switch-off time and the switch-on time, maintaining a room temperature
required for building protection
Note 1 to entry: Building protection operation mode is a reduced mode.
3.13
automatic operation mode
mode of operation of equipment when significant control functions are not overridden by the user
Note 1 to entry: The operation mode is selected automatically according to the scheduler, actual date and time.
3.14
summer/winter switch function
seasonal switch on/off of the heating depending on a function of the outside air temperature
3.15
set back function
function, starting when the operation mode changes from comfort to economy or building protection
mode
Note 1 to entry: During set back period, the heating is switched off until the calculated or measured room
temperature drops below the economy or building protection setpoint; the operation mode switches back to
comfort mode or the calculated switch-on time of the optimization start function is reached.
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3.16
optimum start function
function, calculating the optimum pre-heat time to reach the comfort temperature level at the beginning
of the comfort occupation period
Note 1 to entry: See Figure 2.
Note 2 to entry: The optimum start functions and the optimum stop functions are illustrated by Figure 3. Heating
periods are different from scheduled occupation periods. These differences, due to thermal inertia, depend mainly
on heating loads (or temperature differences). A start and/or stop optimizer controls these switching points,
...