prEN ISO 52120-1

Energy performance of buildings - Contribution of building automation and controls and building management - Part 1: Modules M10-4,5,6,7,8,9,10 (ISO/DIS 52120-1:2020)

This European Standard specifies:
-   a structured list of control, building automation and technical building management functions which contribute to the energy performance of buildings; functions have been categorized and structured according to building disciplines and so called Building automation and control (BAC);
-   a method to define minimum requirements or any specification regarding the control, building automation and technical building management functions contributing to energy efficiency of a building to be implemented in building of different complexities;
-   a factor based method to get a first estimation of the effect of these functions on typical buildings types and use profiles;
-   detailed methods to assess the effect of these functions on a given building.
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.

Energieeffizienz von Gebäuden - Einfluss von Gebäudeautomation und Gebäudemanagement - Teil 1: Module M10‑4, 5, 6, 7, 8, 9, 10 (ISO/DIS 52120-1:2019)

Performance énergétique des bâtiments - Impact de l’automatisation, de la régulation et de la gestion technique des bâtiments - Partie 1: Modules M10-4,5,6,7,8,9,10 (ISO/DIS 52120-1:2020)

Energijske lastnosti stavb - 1. del: Vpliv avtomatizacije, regulacije in upravljanja stavb - 1. del: Moduli M10-4, 5, 6, 7, 8, 9, 10 (ISO/DIS 52120-1:2020)

General Information

• Status: Not Published
• ICS: 91.120.10 - Thermal insulation of buildings
• Technical Committee: CEN/TC 247 - Controls for mechanical building services
• Drafting Committee: CEN/TC 247/WG 6 - Electronic control equipment for HVAC applications, integrated room automation, controls and management systems
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Due Date: 29-Jun-2021
• Completion Date: 29-Jun-2021
• 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)
• Ref Project: oSIST prEN ISO 52120-1:2020 - Energy performance of buildings - Contribution of building automation and controls and building management - Part 1: Modules M10-4,5,6,7,8,9,10 (ISO/DIS 52120-1:2020)

RELATIONS

• Revised: EN 15232-1:2017 - 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
• Effective Date: 03-Jan-2018

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 52120-1:2020
01-februar-2020

Energijske lastnosti stavb - 1. del: Vpliv avtomatizacije, regulacije in upravljanja

stavb - 1. del: Moduli M10-4, 5, 6, 7, 8, 9, 10 (ISO/DIS 52120-1:2020)

Energy performance of buildings - Contribution of building automation and controls and

building management - Part 1: Modules M10-4,5,6,7,8,9,10 (ISO/DIS 52120-1:2020)
Energieeffizienz von Gebäuden - Einfluss von Gebäudeautomation und

Gebäudemanagement - Teil 1: Module M10‑4, 5, 6, 7, 8, 9, 10 (ISO/DIS 52120-1:2019)

Performance énergétique des bâtiments - Impact de l’automatisation, de la régulation et

de la gestion technique des bâtiments - Partie 1: Modules M10-4,5,6,7,8,9,10 (ISO/DIS

52120-1:2020)
Ta slovenski standard je istoveten z: prEN ISO 52120-1
ICS:
91.120.10 Toplotna izolacija stavb Thermal insulation of
buildings
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
oSIST prEN ISO 52120-1:2020 en,fr,de

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

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oSIST prEN ISO 52120-1:2020
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oSIST prEN ISO 52120-1:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 52120-1
ISO/TC 205 Secretariat: ANSI
Voting begins on: Voting terminates on:
2020-01-03 2020-03-27
Energy performance of buildings — Contribution
of building automation and controls and building
management —
Part 1:
Modules M10-4,5,6,7,8,9,10

Performance énergétique des bâtiments — Impact de l'automatisation, du contrôle et de la gestion

techniques des bâtiments —
Partie 1: Modules M10-4,5,6,7,8,9,10
ICS: 91.120.10
IMPORTANT Please use this updated version dated 2019-11-04, and discard any
previous version of this DIS.
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 52120-1:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020
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oSIST prEN ISO 52120-1:2020
ISO/DIS 52120-1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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

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ii © ISO 2020 – All rights reserved
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oSIST prEN ISO 52120-1:2020
ISO/DIS 52120-1:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 2

3 Terms and definitions ..................................................................................................................................................................................... 3

4 Symbols, subscripts and abbreviations ........................................................................................................................................ 6

4.1 Symbols ......................................................................................................................................................................................................... 6

4.2 Subscripts .................................................................................................................................................................................................... 6

5 Description of the method .......................................................................................................................................................................... 6

5.1 Output of the method ........................................................................................................................................................................ 6

5.2 General description of the method(s) ................................................................................................................................. 7

5.3 Selection criteria between the methods ........................................................................................................................... 7

5.4 BAC and TBM functions having an impact on the energy performance of buildings ................. 8

5.5 BAC Efficiency Class .........................................................................................................................................................................21

5.6 BAC and TBM functions assigned to the BAC efficiency classes ................................................................22

5.7 Applying BAC for EMS and maintaining BAC energy efficiency .................................................................32

5.7.1 General...................................................................................................................................................................................32

5.7.2 Applying BAC for EMS ..............................................................................................................................................32

5.7.3 Maintaining BAC energy efficiency ...............................................................................................................32

6 Method 1 - Detailed calculation procedure of the BAC contribution to the energy

performance of buildings (Detailed method) .....................................................................................................................32

6.1 Output data .............................................................................................................................................................................................32

6.2 Calculation time steps ....................................................................................................................................................................34

6.3 Input data - Source of data .........................................................................................................................................................34

6.4 Calculation procedure ....................................................................................................................................................................34

6.4.1 Applicable timestep ....................................................................................................................................................34

6.4.2 Energy performance calculation .....................................................................................................................35

7 Method 2 - Factor based calculation procedure of the BAC impact on the energy

performance of buildings (BAC factor method) ................................................................................................................37

7.1 Output data .............................................................................................................................................................................................37

7.2 Calculation interval ..........................................................................................................................................................................38

7.3 Calculation procedure - Energy calculation ................................................................................................................38

8 Simplified input data correlations ..................................................................................................................................................42

9 Quality control .....................................................................................................................................................................................................42

10 Compliance check .............................................................................................................................................................................................42

Annex A (informative) BAC efficiency factors...........................................................................................................................................43

Annex B (informative) Minimum BAC function type requirements ..................................................................................48

Annex C (informative) Determination of the BAC efficiency factors ................................................................................52

Annex D (informative) Examples of how to use the BAC function list of ISO 16484-3 to

describe functions from this European Standard ...........................................................................................................70

Annex E (informative) Applying BAC for EMS specified in ISO 50001.............................................................................73

Annex F (informative) Maintain BAC energy efficiency .................................................................................................................84

Annex G (informative) Control accuracy ........................................................................................................................................................87

Bibliography .............................................................................................................................................................................................................................88

© ISO 2020 – All rights reserved iii
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oSIST prEN ISO 52120-1:2020
ISO/DIS 52120-1:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO's adherence to the WTO principles in the Technical

Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information

ISO 52120-1 was prepared by International Standardization Organisation (ISO) technical committee

ISO/TC 205 “Building Environmental Design” under Vienna Agreement with ISO Lead.).

ISO 52120 consists of the following parts, under the general title Impact of Building Automation,

Controls and Building Management:
— Part 1: General framework and procedures
— Part 2: Explanation and justification of ISO 52120-1
iv © ISO 2020 – All rights reserved
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oSIST prEN ISO 52120-1:2020
ISO/DIS 52120-1:2020(E)
Introduction

This International Standard is part of a series of standards aiming at international harmonization of the

methodology for the assessment of the energy performance of buildings, 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 ISO 52000-1 (see Normative references), CEN/TS 16628 and CEN/TS 16629 (see

[2] [3]

Bibliography and ) developed under a mandate given to CEN by the European Commission and the

European Free Trade Association (Mandate M/480).

This standard is clearly identified in the modular structure developed to ensure a transparent and

coherent EPB standard set in ISO 52000-1. BAC (Building Automation and Control) is identified in the

modular structure as Technical Building System M10However, other standards issued by ISO TC 205

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 calculation are done in

BAC EPB standard set, but in each underlying standard of EPB set of standards (from M1 to M9 in the

Modular Structure), an IDENTIFIER developed and present in the M10 covered by ISO DIS 52120-1

is used where appropriate. These way of interaction is described in detailed in the Technical Report

( ISO/TR 52000-2) accompanying the over-arching standard. As consequence, the Annex A and Annex B

concept as EXCEL sheet with the calculation formulas used in the EPB standards are not applicable for

this standard.

The main target groups of this standard 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 standard (draft

[5]
ISO TR 52120-2 ).
© ISO 2020 – All rights reserved v
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oSIST prEN ISO 52120-1:2020
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oSIST prEN ISO 52120-1:2020
DRAFT INTERNATIONAL STANDARD ISO/DIS 52120-1:2020(E)
Energy performance of buildings — Contribution
of building automation and controls and building
management —
Part 1:
Modules M10-4,5,6,7,8,9,10
1 Scope
This International Standard specifies:

— a structured list of control, building automation and technical building management functions which

contribute to the energy performance of buildings; functions have been categorized and structured

according to building disciplines and so called Building automation and control (BAC);

— a method to define minimum requirements or any specification regarding the control, building

automation and technical building management functions contributing to energy efficiency of a

building to be implemented in building of different complexities;

— a factor based method to get a first estimation of the effect of these functions on typical buildings

types and use profiles;
— detailed methods to assess the effect of these functions on a given building.

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 ISO 52000-1.

NOTE 1 In 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.

Table 1 — Position of this standard (in casu M10–4,5,6,7,8,9,10), within the modular structure

of the set of EPB standards
Over-arch- Building Technical Building System
ing (as such)
Building PV,
Domes-

Submod- Descrip- Descrip- Descrip- Heat- Cool- Ventila- Humidifica- Dehumid- Light- automa- wi

tic Hot
ule tions tions tions ing ing tion tion ification ing tion and nd,
waters
control ..
sub1 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11
1 General General General
Common
terms and
defini- Building
2 tions; Energy Needs
symbols, Needs
units and
subscripts
The shaded modules are not applicable.
© ISO 2020 – All rights reserved 1
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oSIST prEN ISO 52120-1:2020
ISO/DIS 52120-1:2020(E)
Table 1 (continued)
Over-arch- Building Technical Building System
ing (as such)
Building PV,
Domes-

Submod- Descrip- Descrip- Descrip- Heat- Cool- Ventila- Humidifica- Dehumid- Light- automa- wi

tic Hot
ule tions tions tions ing ing tion tion ification ing tion and nd,
waters
control ..
sub1 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11
(Free)
Indoor Maximum
Applica-
3 Conditions Load and
tion
without Power
Systems
Ways to Ways to Ways to
Express Express Express
4 Energy Energy Energy x
Perfor- Perfor- Perfor-
mance mance mance
Building
Heat
Functions Emission
Transfer
5 and Build- and con- x
by Trans-
ing Bound- trol
mission
aries
Building Heat
Occupan- Transfer Distribu-
6 cy and by Infiltra- tion and x
Operating tion and control
Conditions Ventilation
Aggre-
gation of
Energy Storage
Internal
7 Servic- and con- x
Heat Gains
es and trol
Energy
Carriers
Building Genera-
Solar Heat
8 Partition- tion and x
Gains
ing control
Load
Calculated Building
dispatch-
Energy Dynamics
9 ing and x
Perfor- (thermal
operating
mance mass)
conditions
Measured Measured Measured
Energy Energy Energy
10 x
Perfor- Perfor- Perfor-
mance mance mance
11 Inspection Inspection Inspection
Ways to
Express
12 BMS
Indoor
Comfort
External
Environ-
ment Con-
ditions
Economic
14 Calcula-
tion
The shaded modules are not applicable.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

2 © ISO 2020 – All rights reserved
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oSIST prEN ISO 52120-1:2020
ISO/DIS 52120-1:2020(E)

ISO 50001:2011, Energy management systems — Requirements with guidance for use (ISO 50001:2011)

ISO 52000-1:2017, Energy performance of buildings — Overarching EPB assessment — Part 1: General

framework and procedures

ISO 52016-1, Energy performance of buildings — Energy needs for heating and cooling, internal

temperatures and sensible and latent heat loads — Part 1: Calculation procedures
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 7345:1995, in ISO 52000-1:2017

and the following apply.
3.1
auxiliary energy

electrical energy used by technical building systems to support energy transformation to satisfy

energy needs

Note 1 to entry: This includes energy for fans, pumps, electronics etc. Electrical energy input to the ventilation

system for air transport and heat recovery is not considered as auxiliary energy, but as energy use for ventilation.

Note 2 to entry: In ISO 9488 the energy used for pumps and valves is called “parasitic energy”.

[SOURCE: ISO 52000-1]
3.2
building automation and control
BAC

products, software, and engineering services for automatic controls, monitoring and optimization,

human intervention, and management to achieve energy-efficient, economical, and safe operation of

building services equipment
[SOURCE: ISO 52000-1:2017, modified – The symbol BAC was added.]
3.3
building automation and control system
BACS

system, comprising all products, software and engineering services for automatic controls (including

interlocks), monitoring, optimization, for operation, human intervention, and management to achieve

energy–efficient, economical, and safe operation of building services
Note 1 to entry: BACS is also referred to as BMS (Building management system).

Note 2 to entry: The use of the word ‘control’ does not imply that the system/device is restricted to control

functions. Processing of data and information is possible.

Note 3 to entry: If a building control system, building management system, or building energy management

system complies with the requirements of the ISO 16484- series, it should be designated as a building automation

and control system (BACS).

Note 4 to entry: Building services is divided in technical, infrastructural and financial building services and

energy management is part of technical building management.
Note 5 to entry: Building energy management system is part of a BMS.

Note 6 to entry: Building energy management system comprising data collection, logging, alarming, reporting,

and analysis of energy usage etc. The system is designed to reduce the energy consumption, improve the

utilization, increase the reliability, and predict the performance of the technical building systems, as well as

optimize energy usage and reducing its cost.
[SOURCE: ISO 16484-2:2004, modified – Notes 1, 4 and 5 have been added.]
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oSIST prEN ISO 52120-1:2020
ISO/DIS 52120-1:2020(E)
3.4
building management

totality of services involved in the management operation and monitoring of buildings (including plants

and installations)

Note 1 to entry: Building management can be assigned as part of facility management.

[SOURCE: CEN/TS 15379:2006, modified – Second part of the definition became Note 1 to entry.]

3.5
control function
BAC effect of programs and parameters

Note 1 to entry: BAC functions are referred to as control functions, I/O, processing, optimization, management

and operator functions. They are listed in the BAC FL (function list) for a specification of work.

Note 2 to entry: Function is a program unit that delivers exactly one data element, which can be a multiple value

(i.e. an array or a structure). Functions can be an operand in a program. [EN 61131–3]

3.6
delivered energy

energy, expressed per energy carrier, supplied to the technical building systems through the assessment

boundary, to satisfy the uses taken into account or to produce the exported energy

Note 1 to entry: Delivered energy can be calculated for defined energy uses or it can be measured.

[SOURCE: ISO 52000-1]
3.7
energy carrier

substance or phenomenon that can be used to produce mechanical work or heat or to operate chemical

or physical processes
[SOURCE: ISO 52000-1]
3.8
energy need for heating or cooling

heat to be delivered to or extracted from a thermally conditioned space to maintain the intended space

temperature conditions during a given period of time

Note 1 to entry: The energy need can include additional heat transfer resulting from non-uniform temperature

distribution and non-ideal temperature control, if they are taken into account by increasing (decreasing) the

effective temperature for heating (cooling) and not included in the heat transfer due to the heating (cooling) system.

3.9
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, and be measureable.

[SOURCE: ISO 50001-1:2011 modified - Symbol removed]
3.10
energy efficiency improvement

increase in energy efficiency as a result of technological, behavioural or economic changes

[SOURCE: ISO 50001-1:2011]
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oSIST prEN ISO 52120-1:2020
ISO/DIS 52120-1:2020(E)
3.11
integrated building automation and control systems

BACS designed to be interoperable and with the ability to be connected to one or more specified 3rd

party building automation and control devices/systems through open data communication network

or interfaces performed by standardized methods, special services and permitted responsibilities for

system integration

EXAMPLE Interoperability between 3rd party BACS devices/systems for HVAC, domestic hot water, lighting,

electrical power distribution, energy metering, elevators and escalators, other plants, as well as systems for

communications, access control, security, life safety etc.
3.12
integrated function

BAC effect of programs, shared data points and parameters for multi-discipline interrelationships

between various building services and technologies
3.13
measured energy performance
energy performance based on measured amounts of delivered and exported energy

Note 1 to entry: The measured rating is the weighted sum of all energy carriers used by the building, as

measured by meters or derived from measured energy by other means. It is a measure of the in-use performance

of the building after correction or extrapolation. This is particularly relevant to certification of actual energy

performance.
Note 2 to entry: Also known as “operational rating”.
[SOURCE: ISO 52000-1]
3.14
set-point temperature of a conditioned zone

internal (minimum) temperature, as fixed by the control system in normal heating mode, or internal

(maximum) temperature, as fixed by the control system in normal cooling mode

Note 1 to entry: The corrected value of a temperature setpoint is used for the calculation of energy performance.

It enables the impact of the accuracy of the control system on the energy performance to be taken into account.

3.15
thermally activated building systems
TABS

massive building fabric actively heated or cooled by integrated air or water based systems

3.16
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.

3.17
technical building system

technical equipment for heating, cooling, ventilation, humidification, dehumidification, domestic hot

water, lighting and electricity production

Note 1 to entry: A technical building system can refer to one or to several building services (e.g. heating, heating

and DHW).
© ISO 2020 – All rights reserved 5
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oSIST prEN ISO 52120-1:2020
ISO/DIS 52120-1:2020(E)

Note 2 to entry: A technical building system is composed of different subsystems.

Note 3 to entry: Electricity production can include cogeneration and photovoltaic systems.

[SOURCE: ISO 52000-1]
4 Symbols, subscripts and abbreviations
4.1 Symbols

For the purposes of this document, the symbols given in ISO 52000-1:2017, Clause 4 and Annex C and

the specific symbols listed in Table 2 apply.
Table 2 — Symbols and units
Symbol Quantity Unit
a normalized level, e.g. occupancy or gains -
− mean part load -
Φ heat flow rate, thermal power kW
4.2 Subscripts

For the purposes of this document, the subscript given in ISO 52000-1:2017, Clause 4 and Annex C and

the specific subscripts listed in Table 3 apply.
Table 3 — Subscripts
Subscript Term Subscript Term Subscript Term
amb ambient end end th thermal
BAC building automation r room trans transfer
and control
cor correction ref reference
DHW domestic hot water sta start
5 Description of the method
...