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

Dieser Teil der Norm legt Steuerungsanwendungen und Funktionsblöcke, mit Schwerpunkt auf Beleuchtung, Sonnenschutz und HLK-Anwendungen, fest.
Er beschreibt, wie Energieeffizienz, Komfort und betriebliche Anforderungen von Gebäuden auf funktionale Spezifikationen für integrierte Anlagen- und Raumautomation übertragen werden.

[Not translated]

General Information

Status
Not Published
Current Stage
4060 - Closure of enquiry - Enquiry
Due Date
04-Feb-2021
Completion Date
04-Feb-2021

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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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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)
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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