SIST EN ISO 5149-4:2025
(Main)Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recovery (ISO 5149-4:2022)
Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recovery (ISO 5149-4:2022)
Scope of ISO 5149-4:2022:
This document specifies requirements for safety and environmental aspects in relation to operation, maintenance and repair of refrigerating systems and the recovery, reuse and disposal of all types of refrigerant, refrigerant oil, heat transfer fluid, refrigerating system and part thereof.
This document does not cover "motor vehicle air conditioners" constructed according to the product standards such as ISO 13043.
These requirements are intended to minimize risks of injury to persons and damage to property and the environment resulting from improper handling of the refrigerants or from contaminants leading to system breakdown and resultant emission of the refrigerant.
Kälteanlagen und Wärmepumpen - Sicherheitstechnische und umweltrelevante Anforderungen - Teil 4: Betrieb, Instandhaltung, Instandsetzung und Rückgewinnung (ISO 5149-4:2022)
Systèmes frigorifiques et pompes à chaleur - Exigences de sécurité et d'environnement - Partie 4: Fonctionnement, maintenance, réparation et récupération (ISO 5149-4:2022)
Hladilni sistemi in toplotne črpalke - Varnostnotehnične in okoljevarstvene zahteve - 4. del: Delovanje, vzdrževanje, popravilo in recikliranje (ISO 5149-4:2022)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Hladilni sistemi in toplotne črpalke - Varnostnotehnične in okoljevarstvene
zahteve - 4. del: Delovanje, vzdrževanje, popravilo in recikliranje (ISO 5149-4:2022)
Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4:
Operation, maintenance, repair and recovery (ISO 5149-4:2022)
Kälteanlagen und Wärmepumpen - Sicherheitstechnische und umweltrelevante
Anforderungen - Teil 4: Betrieb, Instandhaltung, Instandsetzung und Rückgewinnung
(ISO 5149-4:2022)
Systèmes frigorifiques et pompes à chaleur - Exigences de sécurité et d'environnement -
Partie 4: Fonctionnement, maintenance, réparation et récupération (ISO 5149-4:2022)
Ta slovenski standard je istoveten z: EN ISO 5149-4:2025
ICS:
27.080 Toplotne črpalke Heat pumps
27.200 Hladilna tehnologija Refrigerating technology
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 5149-4
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2025
EUROPÄISCHE NORM
ICS 27.080; 27.200 Supersedes EN 378-4:2016+A1:2019
English Version
Refrigerating systems and heat pumps - Safety and
environmental requirements - Part 4: Operation,
maintenance, repair and recovery (ISO 5149-4:2022)
Systèmes frigorifiques et pompes à chaleur - Exigences Kälteanlagen und Wärmepumpen -
de sécurité et d'environnement - Partie 4: Sicherheitstechnische und umweltrelevante
Fonctionnement, maintenance, réparation et Anforderungen - Teil 4: Betrieb, Instandhaltung,
récupération (ISO 5149-4:2022) Instandsetzung und Rückgewinnung (ISO 5149-
4:2022)
This European Standard was approved by CEN on 13 July 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 5149-4:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 5149-4:2022 has been prepared by Technical Committee ISO/TC 86 "Refrigeration and
air-conditioning” of the International Organization for Standardization (ISO) and has been taken over as
environmental requirements” the secretariat of which is held by DIN.
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 2026, and conflicting national standards shall
be withdrawn at the latest by January 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 378-4:2016+A1:2019.
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 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 5149-4:2022 has been approved by CEN as EN ISO 5149-4:2025 without any
modification.
INTERNATIONAL ISO
STANDARD 5149-4
Second edition
2022-11
Refrigerating systems and heat
pumps — Safety and environmental
requirements —
Part 4:
Operation, maintenance, repair and
recovery
Systèmes frigorifiques et pompes à chaleur — Exigences de sécurité et
d'environnement —
Partie 4: Fonctionnement, maintenance, réparation et récupération
Reference number
ISO 5149-4:2022(E)
ISO 5149-4:2022(E)
© ISO 2022
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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 5149-4:2022(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements . 2
4.1 Operation instructions . 2
4.2 Instruction of operating personnel . 2
4.3 Documentation . 2
5 Maintenance and repair .2
5.1 General . 2
5.2 Maintenance . 3
5.3 Repair. 4
5.4 Change of refrigerant type . 5
5.4.1 General . 5
5.4.2 Planning the change of refrigerant type . 5
5.4.3 Execution of the change of refrigerant type . 5
6 Requirements for recovery, reuse and disposal . 6
6.1 General requirements . 6
6.1.1 Disposal . 6
6.1.2 Personnel . 6
6.1.3 Parts of refrigerating systems . 6
6.1.4 Refrigerants . 6
6.1.5 Handling . 7
6.2 Requirements for recovery and reuse of refrigerant . 7
6.2.1 General . 7
6.2.2 Tests for reuse of refrigerants . 8
6.2.3 Recovery for reuse . 9
6.2.4 Recovery for recycling . . . 9
6.2.5 Reclaim . . 9
6.3 Requirements for disposal . 10
6.3.1 Refrigerant intended for further processing . 10
6.3.2 Refrigerant not intended for further processing . 10
6.3.3 Absorbed R-717 (ammonia) . 10
6.3.4 Refrigerating machine oil . 10
6.3.5 Other components . 10
6.4 Requirements for documentation . 10
6.5 Requirements for refrigerant transfer, transport and storage . 10
6.5.1 General . 10
6.5.2 Refrigerant transfer . 10
6.5.3 Transport .12
6.5.4 Storage .12
6.6 Requirements for recovery equipment .12
6.6.1 General .12
6.6.2 Operation in respect to the environment .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.