SIST EN 17609:2022
(Main)Building automation and control systems - Control applications
Building automation and control systems - Control applications
This document specifies control applications and function blocks focusing on but not limited to lighting, solar protection and HVAC applications.
It describes how energy performance, comfort, and operational requirements of buildings are translated into functional specifications for integrated plant and room control.
Systeme der Gebäudeautomation - Steuerungsanwendung
Dieses Dokument legt Steuerungsanwendungen und Funktionsblöcke, mit Schwerpunkt auf Beleuchtung, Sonnenschutz und HLK-Anwendungen, fest.
Es beschreibt, wie Energieeffizienz, Komfort und betriebliche Anforderungen von Gebäuden auf funktionale Spezifikationen für integrierte Anlagen- und Raumautomation übertragen werden.
Systèmes d'automatisation et de régulation des bâtiments - Applications de régulation
Ce document spécifie les applications de régulation et les blocs fonctionnels en se concentrant, sans s'y limiter, sur les applications d'éclairage, de protection solaire et de CVC.
Il décrit comment la performance énergétique, le confort et les exigences opérationnelles des bâtiments sont traduits en spécifications fonctionnelles pour la régulation intégré des installations et des locaux.
Sistemi za avtomatizacijo in regulacijo stavb - Izvedba regulacije
Ta dokument določa izvedbe regulacije in funkcionalne sklope ter se med drugim osredotoča na razsvetljavo, zaščito pred soncem in izvedbe ogrevanja, prezračevanja in hlajenja (HVAC).
V njem je opisano, kako se energetske lastnosti, udobje in operativne zahteve za stavbe pretvorijo v funkcionalne specifikacije za integrirano regulacijo naprav in prostorov.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 17609:2022
01-oktober-2022
Sistemi za avtomatizacijo in regulacijo stavb - Izvedba regulacije
Building automation and control systems - Control applications
Systeme der Gebäudeautomation - Steuerungsanwendung
Systèmes d'automatisation et de régulation des bâtiments - Applications de régulation
Ta slovenski standard je istoveten z: EN 17609:2022
ICS:
35.240.67 Uporabniške rešitve IT v IT applications in building
gradbeništvu and construction industry
91.140.01 Napeljave v stavbah na Installations in buildings in
splošno general
SIST EN 17609:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 17609:2022
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SIST EN 17609:2022
EN 17609
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2022
EUROPÄISCHE NORM
ICS 35.240.67; 91.140.01
English Version
Building automation and control systems - Control
applications
Systèmes d'automatisation et de régulation des Systeme der Gebäudeautomation -
bâtiments - Applications de régulation Steuerungsanwendung
This European Standard was approved by CEN on 13 June 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 17609:2022 E
worldwide for CEN national Members.
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SIST EN 17609:2022
EN 17609:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 10
4 Abbreviations . 12
5 Functional specifications having an impact on energy performance, comfort, and
operational requirements of buildings. 14
5.1 Heating control . 14
5.2 Domestic hot water supply control . 39
5.3 Cooling control . 45
5.4 Ventilation and air conditioning control . 66
5.5 Lighting control . 81
5.6 Blind control . 86
6 Functional elements . 90
6.1 Sensor Functions . 90
6.2 Actuator Functions . 99
6.3 Display and User Operation Functions . 103
6.4 Control Functions. 110
Bibliography . 157
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SIST EN 17609:2022
EN 17609:2022 (E)
European foreword
This document (EN 17609:2022) 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 January 2023, and conflicting national standards shall
be withdrawn at the latest by January 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.
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.
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SIST EN 17609:2022
EN 17609:2022 (E)
Introduction
Buildings are built and operated serving a specific purpose, e.g. as an office workspace, a manufacturing
floor, or a data centre. In each case, the usage of the space requires specific environmental conditions, e.g.
temperature, light level or air quality, which is provided.
Increasing the efficient usage of energy to provide these environmental conditions is a key aspect of
building design addressed in EN ISO 52120-1, Energy Performance of Buildings — Energy performance of
buildings — Part 1: Impact of Building Automation, Controls and Building Management.
Energy efficiency requirements cannot be fulfilled by optimizing the primary systems of a building alone.
A holistic view on the building and especially on the room control systems for lighting, solar protection
and HVAC is the basis for optimizing the energy efficiency of buildings. This requires integration of the
room and building controls and management systems from the design phase through installation and
commissioning to the building operation.
The planning process for the technical infrastructure of a building and its spaces includes several steps
starting with a rough set of requirements. With each step in the planning process the design becomes
more detailed. First basic design choices or decisions allow for a budget estimate. These first design
choices may be documented as depicted in Figure 1.
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EN 17609:2022 (E)
Figure 1 — Example for documentation of design choices for technical infrastructure of a
building (Source: SN 502411:2016 / SIA 411:2016)
Figure 1 shows the equipment required for the different technical building disciplines (heating, cooling,
ventilation, lighting, solar protection) in the space including energy related interconnections between the
equipment of the respective disciplines. The schema depicts source/sink, conversion, storage,
distribution, and emission elements and their interconnections in a simple manner. This is a high-level
view on the mechanical and electrical equipment. It does not yet include the automation requirements
associated with the equipment.
In a further planning step, the control functions (BAC functions) associated with the technical
infrastructure equipment of a building are added as depicted in Figure 2.
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Figure 2 — Example for documentation of design choices for technical infrastructure and
associated control functions of a building (Source: SN 502411:2016 / SIA 411:2016)
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EN 17609:2022 (E)
The column “usage/operation” contains control functions required for user interaction with the technical
building infrastructure in the space and/or for super-ordinated (e.g. building-wide) functions and
requirements.
Whereas the control functions are determined by the technical building equipment and the user
operation interface in general, the sophistication of these control functions is determined by the desired
level of energy efficiency of a building or comfort and operational requirements. Hence, both views, the
desired level of energy efficiency of a building and the comfort and operational requirements, are
considered and documented such that this documentation serves as a requirement specification for
building control applications (heating, cooling, ventilation, lighting, solar protection) in a space.
In Figure 2, BAC functions have been added to the equipment. The labels refer to BAC functions listed in
EN ISO 52120-1:2022, Table 5. These BAC functions are not specified in detail in EN ISO 52120-1.
Clause 5 of this document provides a method to transfer energy performance, comfort, and operational
requirements as defined in EN ISO 52120-1:2022 into a more detailed specification of building
automation functions.
Refer to EN ISO 52120-1:2022, Table 5, for a list of functions contributing to achieve the desired level of
energy performance. Whereas EN ISO 52120-1:2022 only provides a very brief description of the
functionality, Clause 5 contains a more detailed description.
NOTE Application of automated control improves the energy performance of buildings. Clause 5 of this
document covers automated control applications only. Any manual or non-automated control listed in EN
ISO 52120-1:2022, Table 5, is not covered in this document.
For the purpose of clarity, each subclause in Clause 5 contains a reference in square brackets to the
corresponding entry in Table 5 of EN ISO 52120-1:2022 directly after the sub-clause heading.
The more detailed description includes information about mandatory and optional inputs as well as
mandatory and optional outputs for the control function. The control function is not described in detail
but rather is a “black box” as the actual implementation may be project or manufacturer specific.
Figure 3 provides an informative schematic view with the function (box), mandatory (blue) and optional
(grey) inputs and mandatory (blue) and optional (grey) outputs. The informative schematic drawing also
shows if inputs may be controlled, e.g. by manual operation or by a schedule and if output values are
associated e.g. with an alarm or a trend.
Figure 3 — Informative depiction of control application scheme for Heating control – Emission
control – Type 1: Central automatic control
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Clause 5 contains in each sub-clause a brief description of the control function itself, the target of the
function, different operating modes, where applicable, and a description of the inputs and outputs of the
function. Optionally, parameters and implementation equipment may be described.
For some of these functions more than one version is described, covering different technological
implementations.
Building control functions may be associated with a specific zone, a room, a building segment, or the
whole building.
The result of applying Clause 5 is a collection of building automation control function blocks. This does
not yet depict how these blocks work in detail or how they are linked to each other. A more detailed
control scheme description can be provided using the function blocks described in Clause 6.
Clause 6 of this document provides function blocks, which can be used to describe building control
functions in more detail independent of a specific building control system or vendor.
Applications can be described by a combination of sensor input, actuator output, user interaction, and
control and monitoring functions. Certain functions in a room (e.g. presence detection) may be shared by
two or more applications. A common set of function blocks covering sensor input, actuator output, user
interaction, and control functions for the different applications in a room serves as the basis for
describing room automation, controls and management systems.
Using a typical example, Figure 4 shows the relationship between sensor, display/operation, control and
actuator functions. Information exchanged between functions is provided from outputs to inputs.
Physical inputs and outputs associated with Sensor and Actuator functions are not depicted in the figure.
As some functions may require parameters these are also depicted in each function block.
Figure 4 — Relationship between Automation functions (typical example)
A sensor function typically includes a physical input (e.g. a temperature sensor, not depicted in Figure 4)
and provides a logical output (OUTPUT of the Sensor function block in Figure 4) for use by other
functions.
A display and operation function includes physical inputs or outputs depending on its functionality and
provides logical inputs for display purposes and logical outputs for use by other functions (Display and
Operation function block in Figure 4).
Control functionality as depicted in Figure 4 is assigned to specific control functions with one or more
logical inputs (INPUT 1 and INPUT 2 of the Control function block in Figure 4) and at least one logical
output (OUTPUT of the Control function block in Figure 4). Control functions are not directly associated
with physical inputs or outputs.
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Actuator functionality is assigned to specific actuator functions. An actuator function typically includes a
physical output (controlling e.g. a valve) and provides a logical input (INPUT of the Actuator function in
Figure 4) and logical output. This logical output could be used as a feedback status information.
The generalized description format used in Clause 6 for functions includes a brief description of the
function, of the physical input(s), of the logical input(s) expected from other functions, of the logical
output(s) provided to other functions, and of the physical output(s). In addition, parameters are listed
that are required to more precisely define the function for a specific project.
The description of the functions blocks follows this uniform scheme:
— Short description of the function;
— Physical Input(s);
— Logical Input(s);
— Logical Output(s);
— Physical Output(s);
— Parameters (optional).
The list of functions may be extended where necessary.
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EN 17609:2022 (E)
1 Scope
This document specifies control applications and function blocks focusing on but not limited to lighting,
solar protection and HVAC applications.
It describes how energy performance, comfort, and operational requirements of buildings are translated
into functional specifications for integrated plant and room control.
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 ISO 52120-1:2022, Energy performance of buildings — Contribution of building automation, controls
and building management — Part 1: General framework and procedures (ISO 52120-1:2021)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 52120-1 and the following
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
3.1
building part
one or more rooms horizontally and/or vertically positioned with a joint perimeter typically determined
by walls or floors
Note 1 to entry: A horizontal building part may be a floor. A vertical building part may be a building wing or side,
e.g. North side or West wing. A building part may be a part of another building part (e.g. West wing – floor 2) and
contains at least one room.
3.2
display function
presentation of information coming from an actuator, control, monitoring or sensor function in a visible
format understandable by a human user
Note 1 to entry: Information may be displayed in text form (e.g. 18 °C, 100 %) or in a graphical form (e.g. light
blue for cool, bar graph).
3.3
energy efficiency
ratio or other quantitative relationship between an output of performance, service, goods or energy, and
an input of energy
EXAMPLE Efficiency conversion energy; energy required/energy used; output/input; theoretical energy used
to operate/energy used to operate.
Note 1 to entry: Both input and output need to be clearly specified in quantity and quality. Additionally, they need
to be measurable.
[SOURCE: EN ISO 52120-1:2022]
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3.4
building automation
coordinated control of lighting, solar protection, heating/ventilation/air conditioning devices and
systems in a building providing the desired comfort level with maximum energy efficiency
Note 1 to entry: Coordinated control may also encompass access control via information links from those devices
and systems to other building control devices and systems.
3.5
room automation
coordinated control of lighting, solar protection, heating/ventilation/air conditioning devices and
systems in a room providing the desired comfort level with maximum energy efficiency
Note 1 to entry: Coordinated control may also encompass access control via information links from those devices
and systems to other room control devices and systems.
3.6
logical input
interface of a function receiving data from an output of another function
3.7
logical output
interface of a function sending data to an input of another function
3.8
operation function
means for input of information by a human user intended for use by an actuator, control, monitoring or
display function
Note 1 to entry: Operation of e.g. a wall switch, touch panel area may be used as input.
3.9
plant
equipment for generation of hot or cold water and/or conditioned air
3.10
room
one or more zones with a joint perimeter typically determined by walls or other types of partitions
Note 1 to entry: Typically, a room is a part of a building segment.
3.11
room automation
control of one or more lighting, solar protection, and/or heating/ventilation/air conditioning in a room
providing the desired comfort levels of these separate applications
3.12
smart control
coordination between all control disciplines providing optimal balance of energy-efficiency, comfort, low
life-cycle cost, ease of operation, engineering, and maintenance
Note 1 to entry: The implementation of the coordination may be achieved via logical information exchange
and/or simply via physics. In the latter case coordination is relying on the synchronization of different disciplines
during the design phase.
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3.13
solar protection
means for reducing heat losses at night and for controlling the impact of solar radiation on the
temperature in a space and/or on the visual comfort of an occupant of a space
Note 1 to entry: The impact of solar radiation on the temperature can lead to an undesired (in summer) or a
desired (in winter) temperature rise.
3.14
space
complete building, building part, room, or zone
3.15
superordinate control
building control functions situated on a supervisory system overseeing automation functions and
aggregating information spanning across a building, a campus, or several locations
3.16
zone
smallest space determined by the minimum technical infrastructure required to operate that space
Note 1 to entry: The minimum technical infrastructure may be a heating radiator, ventilation outlet, or other
mechanical or electrical equipment element.
3.17
technical building management
TBM
process(es) and services related to operation and management of buildings and technical building system
through the interrelationships between the different disciplines and trades
Note 1 to entry: The disciplines and trades comprise all technical building services for the purpose of optimized
maintenance and energy consumption.
EXAMPLE Optimization of buildings through interrelationships ranging from heating, ventilation and air
conditioning (HVAC) to lighting and day lighting to life safety and security to electric power systems and energy
monitoring and metering; to its services, including communications and maintenance and to its management.
[SOURCE: EN ISO 52120-1:2022]
4 Abbreviations
Abbreviation Description
BAC Building Automation and Control
BACS Building Automation and Control System
COP Coefficient of Performance
DHW Domestic Hot Water
TBM Technical Building Management
TABS Thermally Activated Building Structure
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EN 17609:2022 (E)
For the purposes of Clause 6, the following abbreviations and acronyms apply:
Abbreviation Description
PAR Parameter
T Temperature
For the purposes of Clause 6, for the data types of input and output information shown in the informative
examples, the following abbreviations apply:
Abbreviation Description
Presence Presence of persons, comprising the states
— present and
— absent
Binary Two-valued state whose meaning depends on the function, e.g.
— window open
— window closed
Function Enumeration type for controller function (see also 6.4.21)
Solar Data structure providing information on position (in percent) and slat tilt
(in degrees, optionally for blinds) of the solar protection
Light Control value or current value of the lighting system (in percent)
Lux Illuminance (in lux)
Mode Enumeration type for the energy mode, comprising the states
— comfort
— pre-comfort
— economy
— protection
Usage Enumeration type for various room utilisation types
Pos Control value or current value of drives, e.g. valves, ventilation dampers or
windows (in percent)
Qual Air quality (e.g. CO content, in ppm)
2
Temp Temperature (in degrees Celsius)
Wind Wind velocity (in metres per second)
Angle Angle, e.g. of solar position (in degrees)
Time Current time and date
NOTE Although the identifiers of the input/output information in the informative function blocks merely serve
for unambiguous allocation to the text, the naming follows a systematic pattern, consisting of two codes which allow
stating the data type and the use:
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EN 17609:2022 (E)
st nd
1 code Data type 2 code Meaning
A_ Angle ACT Current
B_ Binary AUTO Automatic
F_ Function BMS Centralised specification from
building management system
H_ Humidity DEW Dewpoint
I_ Lux MAN Manual
L_ Light MAINT Maintenance
M_ Mode ON On/off
P_ Presence OUT Outdoor
Q_ Qual PROT Protection
R_ Precipitation ROOM Room…
S_ Solar SET Control value
T_ Temp SETPT Setpoint
U_ Usage SETPTS Setpoint group
V_ Pos STA Current (state) value
W_ Wind SUN Sun
X_ Diverse SUPPLY Supply air
SYNC Synchronization
WINDOW Window
XXX Diverse
5 Functional specifications having an impact on energy performance, comfort,
and operational requirements of buildings
5.1 Heating control
5.1.1 Emission control
5.1.1.1 Type 1 – Central automatic control
[EN ISO 52120-1:2022, Table 5: 1.1, HEATING CONTROL, Emission control, Type 1]
NOTE This Type 1 is no longer considered to be energy efficiency class C but defined as energy efficiency
class D.
Description: Central automatic control of temperature in rooms by means of heating, is acting either on
the distribution or on the generation. Heating control is performed without consideration of local demand
of different rooms, possibly by using one room as reference. This can be achieved for example by an
outside air temperature controller conforming to EN 12098-1 or EN 12098-3.
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Target: To improve Energy Performance by minimizing emitted heat by emitters (e.g. radiators) or by
air in the building using central control of temperature and/or flow. This control may be based on outside
air temperature and/or a reference sensor inside the building and assumes similar demands in different
parts/rooms of the building.
Different operating modes: comfort, economy (pre-comfort), night, building protection.
Inputs (mandatory):
— Outside Air Temperature (varies inside space temperature setpoint; in summer: increases cooling
setpoint, in winter: reduces heating setpoint),
— Room Temperature Setpoint,
— Operating mode,
— Room Temperature (reference room)
Inputs (optional):
— Supply water (flow) temperature,
— Return water temperature
Outputs (mandatory):
— Supply water (valve position),
— Boiler/Pumps On/Off
Outputs (optional):
---
5.1.1.2 Type 2 – Individual room control
[EN ISO 52120-1:2022, Table 5: 1.1, HEATING CONTROL, Emission control, Type 2]
Description: Individual room control by thermostatic valves or electronic controllers.
The individual room control of heating temperature in rooms is performed either by thermostatic valves
or local (non-communicating) electronic control units. The individual control should/may be combined
with scheduler programs providing different operating modes.
Target: To improve Energy Performance by minimizing emitted heat by emitters (e.g. radiators) or by
air in the building using local control of temperature and/or flow in the rooms, thereby adapting to local
demand, i.e. different loads in different rooms.
Different operating modes: comfort, pre-comfort (economy), night, building protection.
Inputs: indoor temperature as reference.
Inputs (mandatory):
— Room Temperature,
— Room Temperature Setpoint,
— Operating mode
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Inputs (optional):
— Presence detection,
— Optimized start/stop control (adaptive),
— Window contact
Outputs (mandatory):
— Supply water (valve position)
Outputs (optional):
---
5.1.1.3 Type 3 – Individual modulating room control with communication
[EN ISO 52120-1:2022, Table 5: 1.1, HEATING CONTROL, Emission control, Type 3]
Description: Individual modulating room control with communication between controllers and to BACS.
Individual modulating control of temperature in rooms by means of heating, with communication
between controllers and to BACS, allows exchange of setpoints, demand and other status information.
Target: To improve Energy Performance by minimizing emitted heat by emitters (e.g. radiators) or by
air in the building using local control of temperature and/or flow in the rooms, thereby adapting to local
demand, i.e. different loads in different rooms. Furthermore, to obtain energy demand for further use to
control distribution and generators, keeping run time at minimum and setpoints optimal.
Different operating modes: comfort, pre-comfort (economy), night, building protection.
Inputs (mandatory):
— Room Temperature,
— Room Temperature Setpoint,
— Operation mode (Operation request on demand – local push button control overriding automatic
sequen
...
SLOVENSKI STANDARD
oSIST prEN 17609:2020
01-november-2020
[Not translated]
Building automation and control systems - Control applications
Systeme der Gebäudeautomation - Steuerungsanwendung
Ta slovenski standard je istoveten z: prEN 17609
ICS:
35.240.67 Uporabniške rešitve IT v IT applications in building
gradbeništvu and construction industry
91.140.01 Napeljave v stavbah na Installations in buildings in
splošno general
oSIST prEN 17609:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 17609:2020
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oSIST prEN 17609:2020
DRAFT
EUROPEAN STANDARD
prEN 17609
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2020
ICS 35.240.67; 91.140.01
English Version
Building automation and control systems - Control
applications
Systeme der Gebäudeautomation -
Steuerungsanwendung
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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17609:2020 E
worldwide for CEN national Members.
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oSIST prEN 17609:2020
prEN 17609:2020 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 11
2 Normative references . 11
3 Terms and definitions . 11
4 Abbreviations . 13
5 Functional specifications having an impact on energy performance, comfort, and
operational requirements of buildings. 15
5.1 Heating control . 15
5.2 Domestic hot water supply control . 37
5.3 Cooling control . 43
5.4 Ventilation and air conditioning control . 61
5.5 Lighting control . 75
5.6 Blind control . 80
6 Functional elements . 84
6.1 Sensor Functions . 84
6.2 Actuator Functions . 92
6.3 Display and User Operation Functions . 96
6.4 Control Functions.103
Bibliography .150
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European foreword
This document (prEN 17609:2020) 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.
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Introduction
Buildings are built and operated serving a specific purpose, e.g. as an office workspace, a manufacturing
floor, or a data centre. In each case, the usage of the space requires specific environmental conditions, e.g.
temperature, light level or air quality, which is provided.
On the other hand, there is an increasing demand for reducing the energy used to provide the
environmental conditions for a given space.
Energy efficiency requirements cannot be fulfilled by optimizing the primary systems of a building alone.
A holistic view on the building and especially on the automation systems for lighting, solar protection and
HVAC in the room is the basis for optimizing the energy efficiency of buildings. This requires integration
of the room automation, controls and management systems from the design phase through installation
and commissioning to the building operation.
The planning process for the technical infrastructure of a building and its spaces includes several steps
starting with a rough set of requirements. With each step in the planning process the design becomes
more detailed. Basic design choices made in the first step allow for a budget estimate. These choices may
be documented as depicted in Figure 1.
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Figure 1 — Example for documentation of design choices for technical infrastructure of a
building (Source: draft for SIA-410:2011)
Figure 1 shows the equipment for the different technical building disciplines (heating, cooling,
ventilation, lighting, solar protection) in the space including the equipment required to fulfil the energy
demand associated with the respective disciplines. The schema depicts source/sink, conversion, storage,
distribution, and emission elements and their interconnections in a simple manner. This is a high-level
view on the mechanical and electrical equipment. It does not yet include the automation requirements
associated with the equipment.
In a further planning step, the control functions (BAC functions) associated with the technical
infrastructure equipment of a building are added as depicted in Figure 2.
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Figure 2 — Example for documentation of design choices for technical infrastructure and
associated control functions of a building (Source: draft for SIA-410:2011)
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The column “usage/operation” contains control functions required for user interaction with the technical
building infrastructure in the space and/or for super-ordinated (e.g. building-wide) functions and
requirements.
Although the schema presented above provides a description of the equipment and the associated control
functions it still is a high-level view. It is reasonably detailed for budgetary estimate purposes but not
detailed enough to serve as a requirement specification.
Whereas the control functions are determined by the technical building equipment and the user
operation interface, the sophistication of these control functions is determined by the desired level of
energy efficiency of a building or comfort and operational requirements. Hence, both views, the desired
level of energy efficiency of a building and the comfort and operational requirements, have to be
considered and documented such that this documentation serves as a requirement specification for
building control applications (heating, cooling, ventilation, lighting, solar protection) in a space.
Building control functions may be associated with a specific zone, a room, a building segment, or the
whole building.
Clause 5 of this document provides a method to transfer energy performance, comfort, and operational
requirements as defined in prEN ISO 52120-1:2020 into a more detailed specification of building
automation functions.
High-quality building automation and control contributes to the reduction of the energy use for heating,
domestic hot water, cooling, ventilation, solar protection, and lighting, using minimal energy for the BAC
and TBM equipment. Thus, high-quality building automation and control has a positive contribution to
the energy performance of a building.
Several types of contributions of building automation and control on the energy performance of a
building are distinguished:
a) The energy usage for heating, domestic hot water, cooling, ventilation, solar protection, and lighting
is influenced by the automation functions of separate single systems.
Single systems may be controlled separately, e.g. the heating system by the room temperature feed-
back control or the electrical lighting system by the day light control.
b) The energy usage for heating, domestic hot water, cooling, ventilation, solar protection, and lighting
is influenced by the coordination between automated functions of separate single systems.
NOTE 1 E.g. coordination of room automation functions for heating, cooling and blind systems.
c) The energy usage for heating, domestic hot water, cooling, ventilation, solar protection, and lighting
is influenced by the interaction via information links between room automation and control of
primary systems.
NOTE 2 E.g. pressure control in an air distribution network using demand information from the room
automation.
d) The energy usage for heating, domestic hot water, cooling, ventilation, solar protection, and lighting
is influenced by the interaction over information links between automation functions and
superordinate functions.
NOTE 3 These are functions for the centralized adaptation and optimization of the BAC system and TBM
functions. For example, automated monitoring, recording and reporting room temperatures, allowing
detection of unnecessary energy use for heating during unoccupied periods.
e) The energy usage for heating, domestic hot water, cooling, ventilation and lighting is influenced
indirectly by the display and user operation functions in the space or building.
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NOTE 4 Individual adjustment of comfort levels has an impact on the energy usage. Natural ventilation by
manual operation of windows has an influence on the energy efficiency.
f) The energy usage for BAC and TBM equipment is dependent on the installed automation system
including the types of sensors, actuators and controllers.
NOTE 5 The energy usage of building automation equipment is generally small compared to the energy
savings generated by applying the building automation.
Integrated building automation is characterized by the presence of at least one of the contribution types b
to d listed above.
The energy use for heating, domestic hot water, cooling, ventilation, solar protection, and lighting, as
considered in the contribution types a to e is mainly dependent on the functionality of the building
automation and control system. The energy use for BAC and TBM equipment, as considered in
contribution type f, is dependent on the hardware of the building automation system.
Refer to prEN ISO 52120-1:2020, Table 4, for a list of functions contributing to achieve the desired level
of energy performance. Whereas prEN ISO 52120-1:2020 only provides a very brief description of the
functionality, Clause 5 contains a more detailed description.
NOTE 6 Application of automated control improves the energy performance of buildings. Clause 5 of this
document covers automated control applications only. Any manual or non-automated control listed in
prEN ISO 52120-1:2020, Table 4, is not covered in this document.
For the purpose of clarity, each sub-clause in Clause 5 contains a reference in square brackets to the
corresponding entry in Table 4 of prEN ISO 52120-1:2020 directly after the sub-clause heading.
The more detailed description includes information about mandatory and optional inputs as well as
mandatory and optional outputs for the control function. The control function is not described in detail
but rather is a “black box” as the actual implementation may be project or manufacturer specific.
Figure 3 provides an informative schematic view with the function (box), mandatory (blue) and optional
(grey) inputs and mandatory (blue) and optional (grey) outputs. The informative schematic drawing also
shows if inputs may be controlled, e.g. by manual operation or by a schedule and if output values are
associated e.g. with an alarm or a trend.
Figure 3 — Informative depiction of control application scheme for Heating control – Emission
control – Type 1: Central automatic control
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Clause 5 contains in each sub-clause a brief description of the control function itself, the target of the
function, different operating modes, where applicable, and a description of the inputs and outputs of the
function. Optionally, parameters and implementation equipment may be described.
For some of these functions more than one version is described, covering different technological
implementations.
The result of applying Clause 5 is a collection of building automation control function blocks. This does
not yet depict how these blocks work in detail or how they are linked to each other. A more detailed
control scheme description can be provided using the function blocks described in Clause 6.
Clause 6 of this document provides function blocks, which can be used to describe building control
functions in more detail independent of a specific building control system or vendor.
Applications can be described by a combination of sensor input, actuator output, user interaction, and
control and monitoring functions. Certain functions in a room (e.g. presence detection) may be shared by
two or more applications. A common set of function blocks covering sensor input, actuator output, user
interaction, and control functions for the different applications in a room serves as the basis for
describing integrated room automation, controls and management systems.
Any automation system consists of input, control and output functionality.
Using a typical example, Figure 4 shows the relationship between sensor, display/operation, control and
actuator functions. Information exchanged between functions is provided from outputs to inputs.
Physical inputs and outputs are presented as an example in the figure. As some functions may require
parameters these are also depicted in each function block.
Figure 4 — Relationship of Integrated Room Automation functions (typical example)
The generalized description format for functions includes a brief description of the function, of the
physical input(s), of the logical input(s) expected from other functions, of the logical output(s) provided
to other functions, and of the physical output(s). In addition, parameters are listed that are required to
more precisely define the function for a specific project.
In the context of Integrated Room Automation, input functionality is assigned to sensor functions and
display and operation functions. A sensor function typically includes a physical input (e.g. a temperature
sensor as depicted in Figure 4) and provides a logical output (OUTPUT of the Sensor function block in
Figure 4) for use by other functions. A display and operation function includes physical inputs or outputs
depending on its functionality and provides logical inputs for display purposes and logical outputs for
use by other functions (Display and Operation function block in Figure 4).
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In the context of Integrated Room Automation, control functionality as depicted in Figure 4 is assigned to
specific control functions with one or more logical inputs (INPUT 1 and INPUT 2 of the Control function
block in Figure 4) and at least one logical output (OUTPUT of the Control function block in Figure 4).
Control functions are not directly associated with physical inputs or outputs.
In the context of Integrated Room Automation actuator functionality is assigned to specific actuator
functions. An actuator function typically includes a physical output (controlling the valve in Figure 4) and
provides a logical input (INPUT of the Actuator function in Figure 4) and logical output. This logical
output could be used as a feedback status information.
The description of the functions blocks follows this uniform scheme:
— Short description of the function;
— Physical Input(s);
— Logical Input(s);
— Logical Output(s);
— Physical Output(s);
— Parameters (optional).
The list of functions may be extended where necessary.
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1 Scope
This part of the standard specifies control applications and function blocks focusing on but not limited to
lighting, solar protection and HVAC applications.
It describes how energy performance, comfort, and operational requirements of buildings are translated
into functional specifications for integrated plant and room control.
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.
prEN ISO 52120-1:2020, Energy Performance of Buildings - Energy performance of buildings - Part 1:
Impact of Building Automation, Controls and Building Management - Modules M10-4,5,6,7,8,9,10
3 Terms and definitions
For the purposes of this document, the terms and definitions given in prEN ISO 52120-1 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
building part
one or more rooms horizontally and/or vertically positioned with a joint perimeter typically determined
by walls or floors
Note 1 to entry: A horizontal building part may be a floor. A vertical building part may be a building wing or side,
e.g. North side or West wing. A building part may be a part of another building part (e.g. West wing – floor 2) and
contains at least one room.
3.2
display function
presentation of information coming from an actuator, control, monitoring or sensor function in a visible
format understandable by a human user
Note 1 to entry: Information may be displayed in text form (e.g. 18 °C, 100 %) or in a graphical form (e.g. light
blue for cool, bar graph).
3.3
energy efficiency
ratio or other quantitative relationship between an output of performance, service, goods or energy, and
an input of energy
EXAMPLE Efficiency conversion energy; energy required/energy used; output/input; theoretical energy used
to operate/energy used to operate.
Note 1 to entry: Both input and output need to be clearly specified in quantity and quality. Additionally, they need
to be measurable.
[SOURCE: prEN ISO 52120-1:2020]
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3.4
integrated building automation
smart control of lighting, solar protection, heating/ventilation/air conditioning devices and systems in a
building providing the desired comfort level with maximum energy efficiency
Note 1 to entry: Smart control may also encompass access control via information links from those devices and
systems to other building control devices and systems.
3.5
integrated room automation
smart control of lighting, solar protection, heating/ventilation/air conditioning devices and systems in a
room providing the desired comfort level with maximum energy efficiency
Note 1 to entry: Smart control may also encompass access control via information links from those devices and
systems to other room control devices and systems.
3.6
logical input
interface of a function receiving data from an output of another function
3.7
logical output
interface of a function sending data to an input of another function
3.8
operation function
means for input of information by a human user intended for use by an actuator, control, monitoring or
display function
Note 1 to entry: Operation of e.g. a wall switch, touch panel area may be used as input.
3.9
plant
equipment for generation of hot or cold water and/or conditioned air
3.10
room
one or more zones with a joint perimeter typically determined by walls or other types of partitions
Note 1 to entry: Typically, a room is a part of a building segment.
3.11
room automation
control of one or more lighting, solar protection, and/or heating/ventilation/air conditioning in a room
providing the desired comfort levels of these separate applications
3.12
smart control
coordination between all control disciplines providing optimal balance of energy-efficiency, comfort, low
life-cycle cost, ease of operation, engineering, and maintenance
Note 1 to entry: The implementation of the coordination may be achieved via logical information exchange
and/or simply via physics. In the latter case coordination is relying on the synchronization of different disciplines
during the design phase.
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3.13
solar protection
means for reducing heat losses at night and for controlling the impact of solar radiation on the
temperature in a space and/or on the visual comfort of an occupant of a space
Note 1 to entry: The impact of solar radiation on the temperature can lead to an undesired (in summer) or a
desired (in winter) temperature rise.
3.14
space
complete building, building part, room, or zone
3.15
superordinate control
building control functions situated on a supervisory system overseeing automation functions and
aggregating information spanning across a building, a campus, or several locations
3.16
zone
smallest space determined by the minimum technical infrastructure required to operate that space
Note 1 to entry: The minimum technical infrastructure may be a heating radiator, ventilation outlet, or other
mechanical or electrical equipment element.
3.17
technical building management
TBM
process(es) and services related to operation and management of buildings and technical building system
through the interrelationships between the different disciplines and trades
Note 1 to entry: The disciplines and trades comprise all technical building services for the purpose of optimized
maintenance and energy consumption.
EXAMPLE Optimization of buildings through interrelationships ranging from heating, ventilation and air
conditioning (HVAC) to lighting and day lighting to life safety and security to electric power systems and energy
monitoring and metering; to its services, including communications and maintenance and to its management.
[SOURCE: prEN ISO 52120-1:2020]
4 Abbreviations
Abbreviation Description
BAC Building Automation and Control
BACS Building Automation and Control System
TBM Technical Building Management
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For the purposes of Clause 6, the following abbreviations and acronyms apply:
Abbreviation Description
DP Data point
RA Room control
RA-FL Room control function list
PAR Parameter
T Temperature
RA-S Room control schematic
For the purposes of Clause 6, for the data types of input and output information shown in the informative
examples, the following abbreviations apply:
Abbreviation Description
Presence Presence of persons, comprising the states
— present and
— absent
Binary Two-valued state whose meaning depends on the function, e.g.
— window open
— window closed
Function Enumeration type for controller function (see also 6.4.21)
Solar Data structure providing information on position (in percent) and slat tilt
(in degrees, optionally for blinds) of the solar protection
Light Manipulated or state value of the lighting system (in percent)
Lux Illuminance (in lux)
Mode Enumeration type for the energy mode, comprising the states
— comfort
— pre-comfort
— economy
— protection
Usage Enumeration type for various room utilisation types
Pos Actual or manipulated value of drives, e.g. valves, ventilation dampers or
windows (in percent)
Qual Air quality (e.g. CO content, in ppm)
2
Temp Temperature (in degrees Celsius)
Wind Wind velocity (in metres per second)
Angle Angle, e.g. of solar position (in degrees)
Time Current time and date
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NOTE Although the identifiers of the input/output information in the informative function blocks merely serve
for unambiguous allocation to the text, the naming follows a systematic pattern, consisting of two codes which allow
stating the data type and the use:
st nd
1 code Data type 2 code Meaning
A_ Angle ACT Current
B_ Binary AUTO Automatic
F_ Function BMS Centralised specification from
building management system
H_ Humidity DEW Dewpoint
I_ Lux MAN Manual
L_ Light MAINT Maintenance
M_ Mode ON On/off
P_ Presence OUT Outdoor
Q_ Qual PROT Protection
R_ Precipitation ROOM Room…
S_ Solar SET Manipulated value
T_ Temp SETPT Setpoint
U_ Usage SETPTS Setpoint group
V_ Pos STA State value
W_ Wind SUN Sun
X_ Diverse SUPPLY Supply air
SYNC Synchronization
WINDOW Window
XXX Diverse
5 Functional specifications having an impact on energy performance, comfort,
and operational requirements of buildings
5.1 Heating control
5.1.1 Emission control
5.1.1.1 Type 1 – Central automatic control
[prEN ISO 52120-1:2020, Table 4: 1.1, HEATING CONTROL, Emission control, Type 1]
Description: Central automatic control of temperature in rooms by means of heating, is acting either on
the distribution or on the generation. Heating control is performed without consideration of local demand
of different rooms, possibly by using one room as reference. This can be achieved for example by an
outside air temperature controller conforming to EN 12098-1 or EN 12098-3.
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Target: To improve Energy Performance by minimizing emitted heat by emitters (e.g. radiators) or by
air in the building using central control of temperature and/or flow. This control may be based on outside
air temperature and/or a reference sensor inside the building and assumes similar demands in different
parts/rooms of the building.
Different operating modes: comfort, economy (pre-comfort), night, building protection.
Inputs (mandatory):
— Outside Air Temperature (varies inside space temperature setpoint; in summer: increases cooling
setpoint, in winter: reduces heating setpoint),
— Room Temperature Se
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