SIST-TP CEN/TR 17689-1:2026

BAC Control loop components - Quality and performance assessment - Part 1: General framework and procedure

This Technical Report describes and makes transparent the standards set of the Components for BAC Control Loop used for electronic individual zone control equipment.

Komponenten von Gebäudeautomation-Regelkreisen - Bewertung von Qualität und Leistung - Teil 1: Allgemeiner Rahmen und Verfahren

Lles Composants d’une Boucle de Régulation- Évaluation de la qualité et performance - Partie 1: Document Cadre Général et procédures

Komponente krmilne zanke BAC - Ocena kakovosti in zmogljivosti - 1. del: Splošni okvir in postopek

Ta tehnično poročilo opisuje in pojasnjuje nabor standardov za komponente za BAC (Building Automation and Control - avtomatizacija in nadzor stavb) krmilno zanko, ki se uporabljajo za elektronsko opremo za individualno coniranje.

General Information

• Status: Published
• Publication Date: 15-Jun-2026
• ICS: 35.240.67 - IT applications in building and construction industry
• ICS: 97.120 - Automatic controls for household use
• Technical Committee: OGS - Heating for buildings
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 10-Jun-2026
• Due Date: 15-Aug-2026
• Completion Date: 16-Jun-2026
• Ref Project: CEN/TR 17689-1:2026 - BAC Control loop components - Quality and performance assessment - Part 1: General framework and procedure

Overview

SIST-TP CEN/TR 17689-1:2026 establishes a general framework and procedure for the quality and performance assessment of Building Automation and Control (BAC) control loop components in individual zone control. Developed under the guidance of the European Committee for Standardization (CEN) and aligned with key European directives, this Technical Report is central to improving the efficiency, comfort, and functionality of modern building environments. By promoting clarity and consistency across component standards, the document facilitates the transparent selection and evaluation of BAC components-paving the way for increased energy savings and enhanced building performance.

Key Topics

• General Framework: Outlines a systematic approach for classifying and testing BAC control loop components.
• Component Coverage: Focuses on sensors, valves, and actuators used in electronic individual zone control equipment.
• Quality and Performance Criteria: Specifies assessment methods to ensure reliability, compatibility, and efficiency in BAC systems.
• Interchangeability: Provides rules and guidelines for combining certified components, supporting system flexibility.
• Reference Standards: Integrates a suite of relevant standards to foster harmonized assessment and compliance within the industry.

Applications

The procedures set out in SIST-TP CEN/TR 17689-1:2026 are vital to a wide array of building automation and control scenarios. Key application areas include:

• Heating, Ventilation, and Air Conditioning (HVAC): Ensures optimal operation and control accuracy for systems such as radiator heating, floor heating, ceiling systems, fan coil units, variable air volume systems, electric convectors, and chilled beam systems.
• Electronic Individual Zone Control: Facilitates precise temperature regulation in specific building zones, contributing to enhanced occupant comfort and energy efficiency.
• Energy Performance Certification: Supports compliance with the EU Building Energy Performance Directive (EPBD), which requires proof of energy saving and efficient operation in new and existing buildings.
• Replacement and Upgrading: Enables system designers and facility managers to confidently select and replace BAC components, assured by transparent quality and interoperability requirements.

Related Standards

For robust BAC implementation and compliance, SIST-TP CEN/TR 17689-1:2026 references and aligns with several key standards, including:

• EN ISO 7345: Defines physical quantities and terms relevant to thermal performance in buildings.
• ISO 52000-1: Provides an overarching framework and procedures for energy performance assessment.
• EN 15500-1 and CEN/TR 15500-2: Cover electronic individual zone control equipment and accompanying technical guidance, forming a foundation for BAC system assessment.
• EN 12098-1 and EN 12098-3: Address controls for hot water and electric heating systems.
• EN 17690-1: Details requirements for room temperature sensors in BAC control loops.
• EN 17691-1: Specifies requirements for valve and actuator assemblies used in water-based HVAC applications.

By adhering to these established standards, system integrators, manufacturers, and building professionals can ensure that BAC control loop components meet industry best practices for energy efficiency, interoperability, and performance.

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BAC control loop components and their quality assessment drive the evolution of intelligent, energy-efficient buildings. SIST-TP CEN/TR 17689-1:2026 offers a solid foundation for consistent evaluation, supporting sustainable building automation throughout Europe and beyond.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2026
Sestavni deli krmilne zanke BAC - Ocena kakovosti in delovanja - 1. del: Splošni
okvir in postopek
BAC Control loop components - Quality and performance assessment - Part 1: General
framework and procedure
Komponenten von Gebäudeautomation-Regelkreisen - Bewertung von Qualität und
Leistung - Teil 1: Allgemeiner Rahmen und Verfahren
Lles Composants d’une Boucle de Régulation- Évaluation de la qualité et performance -
Partie 1: Document Cadre Général et procédures
Ta slovenski standard je istoveten z: CEN/TR 17689-1:2026
ICS:
35.240.67 Uporabniške rešitve IT v IT applications in building
gradbeništvu and construction industry
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TR 17689-1
TECHNICAL REPORT
RAPPORT TECHNIQUE
June 2026
TECHNISCHER REPORT
ICS 35.240.67; 97.120
English Version
BAC Control loop components - Quality and performance
assessment - Part 1: General framework and procedure
Lles Composants d'une Boucle de Régulation- Komponenten von Gebäudeautomation-Regelkreisen -
Évaluation de la qualité et performance - Partie 1: Bewertung von Qualität und Leistung - Teil 1:
Document Cadre Général et procédures Allgemeiner Rahmen und Verfahren

This Technical Report was approved by CEN on 17 May 2026. It has been drawn up by the Technical Committee CEN/TC 247.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 17689-1:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Abbreviations . 6
5 Numbering scheme . 6
6 Control loop . 6
7 Quality and performance assessment for the sensors . 7
8 Quality and performance assessment for the valves and actuators . 8
Bibliography . 9

European foreword
This document (CEN/TR 17689-1:2026) has been prepared by Technical Committee CEN/TC 247
“Building Automation, Controls and Building Management”, the secretariat of which is held by SNV.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared with the involvement of the EU Industry BAC Association eu.bac and
supports essential requirements of EU Directive(s).
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
Introduction
Various EU-Directives and National Regulations regarding energy saving and energy performance of
buildings require proof of energy efficiency.
These requirements and rising energy costs are encouraging owners and occupiers of buildings to reduce
their energy consumption. The cost for energy will be a critical factor in property rental in the future.
The Building Automation and Control (BAC) standards (mainly EN ISO 52120-1, EN 15500-1 and their
respective accompanying Technical Reports CEN ISO/TR 52120-2 and CEN/TR 15500-2) show the
importance of BAC quality in order achieving via control accuracy, BAC functions and BAC strategies
desired comfort (e.g., human health and productivity) while maintaining maximum efficiency. In
response to these concerns, eu.bac (the European Building Automation and Controls Association) set up
the European Certification Scheme for Building Automation. Within this certification scheme, an
“interchangeability” concept and rules were developed. It is based on European Standard EN 15500-1
and its accompanying Technical Report CEN/TR 15500-2.
Since more and more components become available, each component of a BAC control loop ideally will
be described in a set of standards. In addition, this document aims to ease the appropriate selection of
components in order getting the desired control loop quality and the desired performance. It also shows
the relationship between the set of standards and quality and performance criteria.
The set of standards covers sensors, valves and actuators used in a building automation and controls in
conjunction with a BAC controller. These components contribute to the control accuracy of a control loop.
Classifications and test methodologies for these components are described in each standard. Based on
the set of standards, a self-declaration of the manufacturer can be taken into consideration for the
Interchangeability.
Table 1 shows the list of applications covered by the eu.bac certification scheme, depending on the
building services and energy carriers.
Table 1 — List of applications covered by the eu.bac certification scheme
Application Building service(s) Energy carrier(s)
Heating system (radiator heating) Heating Water
Electronic radiator valve Heating Water
Water floor heating Heating Water
Ceiling system Heating and Cooling Water
Fan coil unit system 2 pipes / 4 pipes Heating and Cooling Air - Water
Fan coil unit system 2 pipes/ 2 wires Heating and Cooling Air – Water - Electricity
Variable air volume system without Heating and Cooling Air
heating/cooling coil
Variable air volume system with Heating and Cooling Air - Water
heating/cooling coil
Electric convector Heating Electricity
Electric floor heating Heating Electricity
Electric ceiling heating Heating Electricity
Chilled beam (2 pipes or 4 pipes) Heating and cooling Air - Water
1 Scope
This document describes and makes transparent the set of standards on the Components for BAC Control
Loop used for electronic individual zone control equipment.
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 7345, Thermal performance of buildings and building components - Physical quantities and
definitions (ISO 7345:2018)
ISO 52000-1, Energy performance of buildings — Overarching EPB assessment — Part 1: General
framework and procedures
EN 15500-1, Energy Performance of Buildings - Control for heating, ventilating and air conditioning
applications - Part 1: Electronic individual zone control equipment - Modules M3-5, M4-5, M5-5
CEN/TR 15500-2, Energy Performance of Buildings - Control for heating, ventilating and air-conditioning
applications — Part 2:
...