SIST EN ISO 16484-4:2025

SLOVENSKI STANDARD
01-november-2025
Nadomešča:
SIST EN 17609:2022
Sistemi za avtomatizacijo in regulacijo stavb (BACS) - 4. del: Izvedba regulacije
(ISO 16484-4:2025)
Building automation and control systems (BACS) - Part 4: Control applications (ISO
16484-4:2025)
Systeme der Gebäudeautomation - Steuerungsanwendung (ISO 16484-4:2025)
Systèmes d'automatisation et de contrôle des bâtiments (BACS) - Partie 4: Applications
de contrôle (ISO 16484-4:2025)
Ta slovenski standard je istoveten z: EN ISO 16484-4:2025
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 16484-4
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2025
EUROPÄISCHE NORM
ICS 91.040.01; 35.240.67 Supersedes EN 17609:2022
English Version
Building automation and control systems (BACS) - Part 4:
Control applications (ISO 16484-4:2025)
Systèmes d'automatisation et de contrôle des Systeme der Gebäudeautomation - Teil 4:
bâtiments (BACS) - Partie 4: Applications de contrôle Steuerungsanwendung (ISO 16484-4:2025)
(ISO 16484-4:2025)
This European Standard was approved by CEN on 21 August 2025.

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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16484-4:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 16484-4:2025) has been prepared by Technical Committee ISO/TC 205
"Building environment design" in collaboration with 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 March 2026, and conflicting national standards shall
be withdrawn at the latest by March 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 17609:2022.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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.
Endorsement notice
The text of ISO 16484-4:2025 has been approved by CEN as EN ISO 16484-4:2025 without any
modification.
International
Standard
ISO 16484-4
First edition
Building automation and control
2025-08
systems (BACS) —
Part 4:
Control applications
Systèmes d'automatisation et de contrôle des bâtiments
(BACS) —
Partie 4: Applications de contrôle
Reference number
ISO 16484-4:2025(en) © ISO 2025

ISO 16484-4:2025(en)
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 16484-4:2025(en)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 3
5 Functional specifications having an impact on energy performance, comfort, and
operational requirements of buildings . 3
5.1 Heating control .3
5.1.1 Emission control .3
5.1.2 Emission control for TABS (heating mode) .6
5.1.3 Control of distribution network hot water temperature (supply or return) .9
5.1.4 Control of distribution pumps in networks .10
5.1.5 Intermittent control of emission and/or distribution . 13
5.1.6 Heat generator control (combustion and district heating) .16
5.1.7 Heat generator control (heat pump) .18
5.1.8 Heat generator control (outdoor unit) .19
5.1.9 Sequencing of different heat generators . 20
5.1.10 Control of Thermal Energy Storage (TES) charging. 23
5.1.11 Hydronic balancing heating distribution (including contribution to balancing to
the emission side) .24
5.2 Domestic hot water (DHW) supply control . 26
5.2.1 Control of DHW storage charging with direct electric heating or integrated
electric heat pump . 26
5.2.2 Control of DHW storage charging using hot water generation .27
5.2.3 Control of DHW storage charging with solar collector and supplementary heat
generation . 29
5.2.4 Control of DHW circulation pump .31
5.3 Cooling control .32
5.3.1 Emission Control .32
5.3.2 Emission control for TABS (cooling mode) . 35
5.3.3 Control of distribution network chilled water temperature (supply or return) .37
5.3.4 Control of distribution pumps in hydraulic networks . 38
5.3.5 Intermittent Control of Emission and/or Distribution .41
5.3.6 Interlock between heating and cooling control of emission and/or distribution . 44
5.3.7 Generator control for cooling .45
5.3.8 Sequencing of different chillers (generators for chilled water) . 46
5.3.9 Control of Thermal Energy Storage (TES) charging. 48
5.3.10 Hydronic balancing cooling distribution (including contribution to balancing to
the emission side) . 49
5.4 Ventilation and air conditioning control .51
5.4.1 Supply air flow control at the room level.51
5.4.2 Room air temperature control by the ventilation system (all-air systems;
combination with static systems as cooling ceiling, radiators etc.) . 53
5.4.3 Coordination of room air temperature control by ventilation and by static
systems . 55
5.4.4 Outside air flow control . 56
5.4.5 Air flow or pressure control at the air handler level . .57
5.4.6 Heat recovery control (icing protection) . 60
5.4.7 Heat recovery control (prevention of overheating) .61
5.4.8 Free mechanical cooling .62
5.4.9 Supply air temperature control at the air handling unit level . 64
5.4.10 Humidity control . 65

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