IEC 60335-2-40:2022 ED7
(Main)Household and similar electrical appliances - Safety - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers
Household and similar electrical appliances - Safety - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers
IEC 60335-2-40:2022 deals with the safety of electric heat pumps, sanitary hot water heat pumps and air conditioners, incorporating motor-compressors as well as hydronic fan coils units, dehumidifiers (with or without motor-compressors), thermoelectric heat pumps and partial units. Their maximum rated voltage being not more than 300 V for single phase appliances and 600 V for multi-phase appliances. Appliances not intended for normal household use but which nevertheless can be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. The appliances referenced above can consist of one or more factory-made assemblies. If provided in more than one assembly, the separate assemblies are used together, and the requirements are based on the use of matched assemblies. This document does not take into account refrigerants other than group A1, A2L, A2 and A3 as defined by ISO 817. Flammable refrigerants are limited to those of a molar mass of more than or equal to 42 kg/kmol based on WCF (worst case formulation) as specified in ISO 817. As far as practical, this document deals with common hazards presented by appliances that are encountered in normal use and assumes that installation, servicing, decommissioning, and disposal are safely handled by competent persons and accidental release of refrigerants is avoided. However, it does not prescribe the criteria to ensure competence of persons during installation, servicing and disposal. Safety requirements during disposal are not specified in this standard. Supplementary heaters, or a provision for their separate installation, are within the scope of this standard, but only heaters which are designed as a part of the appliance package, the controls being incorporated in the appliance. Attention is drawn to the fact that
- for appliances intended to be used in vehicles or on-board ships or aircraft, additional requirements can be necessary;
- in many countries, additional requirements are specified, for example, by the national health authorities responsible for the protection of labour and the national authorities responsible for storage, transportation, building constructions and installations.
This document does not apply to
- humidifiers intended for use with heating and cooling equipment (IEC 60335-2-88);
- appliances designed exclusively for industrial processing;
- appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
This seventh edition cancels and replaces the sixth edition published in 2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- Clause 1: added thermoelectric heat pumps to the scope and increased maximum rated voltage to 300 V for single phase appliances;
- Clause 7: revised requirements for marking on the appliance and packaging, including a symbol for minimum floor area and modifying the symbol for flammable refrigerants to include the safety group per ISO 817;
- Clause 11 and Clause 19: restructured for alignment with Part 1 and added requirements for supplementary air heaters;
- Clause 13 and Clause 16: revised requirement for leakage current for stationary class I motor-operated appliances;
- Clause 21: added requirements for particle foam material and revised requirements for transport testing;
- Clause 22: removed limit on the sum of refrigerant charges for appliances with multiple refrigerating systems, and revised requirements for avoiding ignition sources, leak detection systems, safety shut-off valves, and particle foam material;
- Clause 23: added requirements to avoid contact between wires and refrigerant piping;
- Clause 24
Appareils électrodomestiques et analogues - Sécurité - Partie 2-40: Exigences particulières pour les pompes à chaleur électriques, les climatiseurs et les déshumidificateurs
L'IEC 60335-2-40:2022 traite de la sécurité des pompes à chaleur électriques, des pompes à chaleur pour production d'eau chaude sanitaire et des climatiseurs qui comportent des motocompresseurs ainsi que des ventiloconvecteurs hydroniques, des déshumidificateurs (avec ou sans motocompresseur), des pompes à chaleur thermoélectriques et des unités partielles. Leur tension assignée maximale n’est pas supérieure à 300 V pour les appareils monophasés et à 600 V pour les appareils multiphasés. Les appareils non destinés à un usage domestique normal, mais qui néanmoins peuvent constituer une source de danger pour le public, tels que les appareils destinés à être utilisés par des usagers non avertis dans des magasins, chez des artisans et dans des fermes, sont compris dans le domaine d'application de la présente norme. Les appareils indiqués ci-dessus peuvent consister en un ou plusieurs ensembles fabriqués en usine. Si les appareils sont fournis en plusieurs ensembles, les ensembles doivent être utilisés conjointement et les exigences correspondantes dépendent de l'utilisation des ensembles assortis. La présente norme ne couvre pas les fluides frigorigènes qui n'appartiennent pas aux groupes A1, A2L, A2 et A3 tels qu'ils sont définis par l’ISO 817. Les fluides frigorigènes inflammables se limitent à ceux dont la masse molaire est supérieure ou égale à 42 kg/kmol d'après la formule "la plus défavorable" (WCF, Worst Case Formulation) spécifiée dans l'ISO 817. Dans la mesure du possible, la présente norme traite des dangers courants engendrés par les appareils qui sont rencontrés dans le cadre d'une utilisation normale et elle suppose que l'installation, l'entretien, la mise hors service et l'élimination sont effectués en toute sécurité par des personnes compétentes et que le dégagement accidentel de fluides frigorigènes est évité. Toutefois, elle ne prescrit pas les critères qui permettent de garantir la compétence des personnes lors de l'installation, de l'entretien et de l'élimination. Les exigences de sécurité pendant l'élimination ne sont pas spécifiées dans la présente norme. Les dispositifs de chauffage supplémentaires (ou les dispositions concernant leur installation) sont couverts par le domaine d'application de la présente norme, mais uniquement les dispositifs de chauffage qui sont conçus en tant que partie de l'appareil, les commandes étant incorporées à l'appareil. L'attention est attirée sur le fait que
- pour les appareils destinés à être utilisés dans des véhicules ou à bord de navires ou d'avions, des exigences supplémentaires peuvent être nécessaires;
- dans de nombreux pays, des exigences supplémentaires sont spécifiées par exemple par les organismes nationaux de la santé publique responsables de la protection des travailleurs et par les organismes nationaux responsables du stockage, du transport, de la construction des bâtiments et des installations.
La présente norme ne s'applique pas
- aux humidificateurs destinés à être utilisés avec des appareils de chauffage et de refroidissement (IEC 603352-88);
- aux appareils prévus exclusivement pour des usages industriels;
- aux appareils destinés à être utilisés dans des locaux présentant des conditions particulières, telles que la présence d'une atmosphère corrosive ou explosive (poussière, vapeur ou gaz).
Cette septième édition annule et remplace la sixième édition parue en 2018. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- Article 1: ajout des pompes à chaleur thermoélectriques au domaine d'application et augmentation de la tension assignée maximale à 300 V pour les appareils monophasés;
- Article 7: révision des exigences relatives au marquage sur l'appareil et l'emballage, y compris un symbole relatif à la surface au sol minimale, et modification du symbole relatif aux fluides frigorigènes inflammables afin d'inclure le groupe de sécurité selon l’ISO
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IEC 60335-2-40 EXV
®
Edition 7.0 2022-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 60335-2-40:2022 includes the content of the references made to
IEC 60335-1:2010+AMD1:2013+AMD2:2016 CSV
Household and similar electrical appliances – Safety –
Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and
dehumidifiers
IEC 60335-2-40:2022-09 EXV(en)
---------------------- Page: 1 ----------------------
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IEC 60335-2-40 EXV
®
Edition 7.0 2022-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 60335-2-40 includes the content of the references made to
IEC 60335-1:2010+AMD1:2013+AMD2:2016 CSV
Household and similar electrical appliances – Safety –
Part 2-40: Particular requirements for electrical heat pumps, air-conditioners
and dehumidifiers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 23.120 ISBN 978-2-8322-5674-9
Warning! Make sure that you obtained this publication from an authorized distributor.
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
IEC 60335-1:2010/AMD2:2016/ – 1 –
ISH1:2020 IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IEC 60335-1
Edition 5.0 2010-05
Amendment 2: 2016-05
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –
Part 1: General requirements
INT ERPRET AT ION SHEET 1
This interpretation sheet has been prepared by IEC technical committee 61: Safety of
household and similar electrical appliances.
The text of this interpretation sheet is based on the following documents:
DISH Report on voting
61/5999/DISH 61/6009/RVDISH
Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.
___________
TC 61 interpretation sheet on: Detachable power supply parts of IEC 60335-1:2010/
AMD2:2016
Introduction
Amendment 2 of IEC 60335-1:2010 defines and introduces requirements for a detachable
power supply part of an appliance. In this amendment, 24.2 prohibits the use of a power
supply in a flexible cord.
QUESTION:
Does Subclause 24.2 prohibit the use of a detachable power supply part?
ANSWER
No, a “detachable power supply part” is a defined term and is not captured by term “power
supply” as used in Subclause 24.2.
ICS 13.120; 97.030
IEC 60335-1:2010-05/AMD2:2016-05/ISH1:2020-04(en-fr)
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– 2 – IEC 60335-1:2010/AMD2:2016/
ISH1:2020 IEC 2020
NOTE A detachable power supply part is captured by the defined term when the output of the power supply part is
detachable from the class III construction part of the appliance at:
– the power supply part, or
– the class III construction part of the appliance.
However, the supply cord (if any) does not have to be detachable from the detachable power supply part.
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– 2 – IEC 60335-2-40:2022 EXV IEC 2022
CONTENTS
FOREWORD .7
INTRODUCTION . 10
1 Scope . 11
2 Normative references . 12
3 Terms and definitions . 17
4 General requirement . 32
5 General conditions for the tests . 32
6 Classification . 36
7 Marking and instructions . 36
8 Protection against access to live parts . 49
9 Starting of motor-operated appliances . 51
10 Power input and current . 51
11 Heating . 53
12 Void . 60
13 Leakage current and electric strength at operating temperature . 60
14 Transient overvoltages . 62
15 Moisture resistance . 63
16 Leakage current and electric strength . 64
17 Overload protection of transformers and associated circuits . 66
18 Endurance . 66
19 Abnormal operation . 66
20 Stability and mechanical hazards . 80
21 Mechanical strength . 81
22 Construction . 83
23 Internal wiring . 107
24 Components . 109
25 Supply connection and external flexible cords . 114
26 Terminals for external conductors . 122
27 Provision for earthing . 124
28 Screws and connections . 126
29 Clearances, creepage distances and solid insulation . 129
30 Resistance to heat and fire . 137
31 Resistance to rusting. 142
32 Radiation, toxicity and similar hazards . 142
Annex A (informative) Routine tests . 162
Annex B (normative) Appliances powered by rechargeable batteries that are recharged
in the appliance. 164
Annex C (normative) Ageing test on motors . 169
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IEC 60335-2-40:2022 EXV IEC 2022 – 3 –
Annex D (normative) Thermal motor protectors . 170
Annex E (normative) Needle-flame test . 171
Annex F (normative) Capacitors. 172
Annex G (normative) Safety isolating transformers . 174
Annex H (normative) Switches . 175
Annex I (normative) Motors having basic insulation that is inadequate for the rated
voltage of the appliance . 177
Annex J (normative) Coated printed circuit boards . 178
Annex K (normative) Overvoltage categories . 179
Annex L (informative) Guidance for the measurement of clearances and creepage
distances . 180
Annex M (normative) Pollution degree . 184
Annex N (normative) Proof tracking test . 185
Annex O (informative) Selection and sequence of the tests of Clause 30 . 186
Annex P (informative) Guidance for the application of this standard to appliances used
in tropical climates . 192
Annex Q (informative) Sequence of tests for the evaluation of electronic circuits . 194
Annex R (normative) Software evaluation. 196
Annex S (normative) Battery-operated appliances powered by batteries that are
non-rechargeable or not recharged in the appliance . 210
Annex T (normative) UV-C radiation effect on non-metallic materials . 213
Annex AA (informative) Examples for operating temperatures of the appliance . 216
Annex CC (informative) Transportation, marking and storage for units that employ
flammable refrigerants . 221
Annex DD (normative) Requirements for installation, service, maintenance and repair,
and decommissioning manuals of appliances using flammable refrigerants . 222
Annex EE (normative) Pressure tests . 231
Annex FF (normative) Leak simulation tests . 233
Annex GG (normative) Charge limits, ventilation requirements and requirements for
secondary circuits . 235
Annex HH (informative) Competence of service personnel . 268
Annex II (Void) . 270
Annex JJ (normative) Allowable openings of relays and similar components to prevent
ignition of A2L refrigerants . 271
Annex KK (normative) Test method for hot surface ignition temperature for A2L . 273
Annex LL (normative) Refrigerant detection systems for flammable refrigerants . 277
Annex MM (normative) Refrigerant sensor location confirmation test. 288
Annex NN (normative) Flame arrest enclosure verification test for A2L refrigerants . 291
Annex OO (Void) . 293
Annex PP (normative) Leak detection system confirmation test for flammable
refrigerants . 294
Annex QQ (normative) Methods for determining releasable charge . 300
Bibliography . 308
Index of defined terms . 308
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– 4 – IEC 60335-2-40:2022 EXV IEC 2022
Figure 1 – Circuit diagram for leakage current measurement at operating temperature
for single-phase connection of class II appliances and for parts of class ll construction . 144
Figure 2 – Circuit diagram for leakage current measurement at operating temperature for
single-phase connection of other than class II appliances or parts of class ll construction . 145
Figure 3 – Circuit diagram for leakage current measurement at operating temperature
for three-phase with neutral class II appliances and for parts of class ll construction . 146
Figure 4 – Circuit diagram for leakage current measurement at operating temperature
for three-phase with neutral appliances other than those of class II or parts of class ll
construction . 147
Figure 5 – Small part . 148
Figure 6 – Example of an electronic circuit with low-power points . 149
Figure 7 – Test finger nail . 150
Figure 8 – Flexing test apparatus . 151
Figure 9 – Constructions of cord anchorages . 152
Figure 10 – An example of parts of an earthing terminal . 153
Figure 11 – Examples of clearances . 154
Figure 12 – Example of the placement of the cylinder . 155
Figure 13 – Small parts cylinder . 156
Figure 101 – Example of label for field charged units . 157
Figure 102 – Arrangement for heating test of appliances with supplementary air heater . 159
Figure 103 – Supply circuit for locked-rotor test of a motor of the single-phase type –
Revise as needed for three-phase test . 160
Figure 104 – Power spectral density profile for vibration test in 21.101 . 160
Figure 105 – Dimensional details for the weight in the area of the pressure ball . 160
Figure 106 – Measurement before and after the test . 161
Figure B.1 – Examples of forms of constructions for appliances covered by Annex B . 167
Figure L.1 – Sequence for the determination of clearances . 181
Figure L.2 – Sequence for the determination of creepage distances . 183
Figure O.1 – Tests for resistance to heat . 186
Figure O.2 – Selection and sequence of tests for resistance to fire in hand-held
appliances . 187
Figure O.3 – Selection and sequence of tests for resistance to fire in attended appliances . 188
Figure O.4 – Selection and sequence of tests for resistance to fire in unattended
appliances . 189
Figure O.5 – Some applications of the term "within a distance of 3 mm" . 191
Figure S.1 – Examples of battery marking representing three batteries . 212
Figure GG.1 – Unventilated area . 265
Figure GG.2 – Mechanical ventilation . 265
Figure GG.3 – Relevant heights h , h and h for calculation of A and m . 266
inst 0 rel min max
Figure GG.4 – Airflow direction . 267
Figure KK.1 – Front view of test apparatus labels . 273
Figure KK.2 – Test apparatus with dimensions . 274
Figure KK.3 – Top view of test apparatus . 275
Figure LL.1 – Example of test chamber design . 283
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IEC 60335-2-40:2022 EXV IEC 2022 – 5 –
Table 1 – Power input deviation . 51
Table 2 – Current deviation . 52
Table 3 – Maximum normal temperature rises . 56
Table 4 – Voltage for electric strength test . 62
Table 5 – Characteristics of high-voltage sources. 62
Table 6 – Impulse test voltage . 63
Table 7 – Test voltages . 65
Table 8 – Maximum winding temperature . 69
Table 9 – Maximum abnormal temperature rise . 75
Table 10 – Dimensions of cables and conduits . 115
Table 11 – Minimum cross-sectional area of conductors . 117
Table 12 – Pull force and torque . 119
Table 13 – Nominal cross-sectional area of conductors . 123
Table 14 – Torque for testing screws and nuts . 128
Table 15 – Rated impulse voltage . 130
Table 16 – Minimum clearances . 130
Table 17 – Minimum creepage distances for basic insulation . 134
Table 18 – Minimum creepage distances for functional insulation . 135
Table 19 – Minimum thickness for accessible parts of reinforced insulation consisting of
a single layer . 137
Table 101 – Power spectral density profile for vibration test . 83
Table 102 – UV-C spectral irradiance measurement location . 143
Table A.1 – Test voltages . 163
Table C.1 – Test conditions . 169
Table R.1 – General fault/error conditions . 198
Table R.2 – Specific fault/error conditions . 201
Table R.3 – Semi-formal methods . 207
Table R.4 – Software architecture specification . 207
Table R.5 – Module design specification . 208
Table R.6 – Design and coding standards . 208
Table R.7 – Software safety validation . 209
Table S.101 – Battery source impedance . 211
Table T.1 – Minimum property retention limits after UV-C exposure . 214
Table T.2 – Minimum electric strength for internal wiring after UV-C exposure . 215
Table AA.1 – Examples for operating temperatures of the appliance . 216
Table BB.1 – Selected information about refrigerants . 217
Table DD.1 – Mandatory clauses in each manual . 222
Table GG.1 – Outline of Annex GG (informative) . 236
Table GG.2 – Circulation airflow . 241
Table GG.3 – Appliance with packaging . 248
Table GG.4 – Appliance without packaging . 248
Table GG.5 – Minimum air velocity . 260
Table GG.6 – Refrigerant leak rate (ṁ ) . 263
leak
---------------------- Page: 9 ----------------------
– 6 – IEC 60335-2-40:2022 EXV IEC 2022
Table LL.1 – Relationship among alarm set point, tolerance and test gas (informative) . 279
Table LL.2 – Gas and vapour concentrations . 281
Table LL.3 – Example of the test chamber design . 284
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IEC 60335-2-40:2022 EXV IEC 2022 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –
Part 2-40: Particular requirements for electrical heat pumps,
air-conditioners and dehumidifiers
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This extended version (EXV) of the official IEC Standard provides the user with a
comprehensive content of the Standard.
IEC 60335-2-40:2022 EXV includes the content of the references made to IEC 60335-1:2010,
its Amendment 1:2013 and its Amendment 2:2016.
Particular subclauses of IEC 60335-1:2010+AMD1:2013+AMD2:2016 CSV are displayed in
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---------------------- Page: 11 ----------------------
– 8 – IEC 60335-2-40:2022 EXV IEC 2022
IEC 60335 has been prepared by subcommittee 61D: Appliances for air-conditioning for
household and similar purposes, of IE
...
IEC 60335-2-40
®
Edition 7.0 2022-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and
dehumidifiers
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-40: Exigences particulières pour les pompes à chaleur électriques, les
climatiseurs et les déshumidificateurs
IEC 60335-2-40:2022-05(en-fr)
---------------------- Page: 1 ----------------------
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The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
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IEC 60335-2-40
®
Edition 7.0 2022-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and
dehumidifiers
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-40: Exigences particulières pour les pompes à chaleur électriques, les
climatiseurs et les déshumidificateurs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 23.120 ISBN 978-2-8322-3437-2
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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– 2 – IEC 60335-2-40:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 10
3 Terms and definitions . 11
4 General requirement . 19
5 General conditions for the tests . 19
6 Classification . 20
7 Marking and instructions . 20
8 Protection against access to live parts . 26
9 Starting of motor-operated appliances . 26
10 Power input and current . 26
11 Heating . 26
12 Void . 29
13 Leakage current and electric strength at operating temperature . 29
14 Transient overvoltages . 29
15 Moisture resistance . 29
16 Leakage current and electric strength . 31
17 Overload protection of transformers and associated circuits . 31
18 Endurance . 31
19 Abnormal operation . 31
20 Stability and mechanical hazards . 38
21 Mechanical strength . 38
22 Construction . 39
23 Internal wiring . 51
24 Components . 51
25 Supply connection and external flexible cords . 52
26 Terminals for external conductors . 53
27 Provision for earthing . 53
28 Screws and connections . 53
29 Clearances, creepage distances and solid insulation . 53
30 Resistance to heat and fire . 53
31 Resistance to rusting . 55
32 Radiation, toxicity and similar hazards . 55
Annexes . 62
Annex D (normative) Thermal motor protectors . 62
Annex I (normative) Motors having basic insulation that is inadequate for the rated
voltage of the appliance . 62
Annex AA (informative) Examples for operating temperatures of the appliance . 63
Annex BB (normative) Selected information about refrigerants . 64
Annex CC (informative) Transportation, marking and storage for units that employ
flammable refrigerants . 68
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IEC 60335-2-40:2022 © IEC 2022 – 3 –
Annex DD (normative) Requirements for installation, service, maintenance and repair,
and decommissioning manuals of appliances using flammable refrigerants . 69
Annex EE (normative) Pressure tests . 78
Annex FF (normative) Leak simulation tests . 80
Annex GG (normative) Charge limits, ventilation requirements and requirements for
secondary circuits . 82
Annex HH (informative) Competence of service personnel . 115
Annex II (Void) . 117
Annex JJ (normative) Allowable openings of relays and similar components to prevent
ignition of A2L refrigerants . 118
Annex KK (normative) Test method for hot surface ignition temperature for A2L . 120
Annex LL (normative) Refrigerant detection systems for flammable refrigerants . 124
Annex MM (normative) Refrigerant sensor location confirmation test . 135
Annex NN (normative) Flame arrest enclosure verification test for A2L refrigerants . 138
Annex OO (Void) . 140
Annex PP (normative) Leak detection system confirmation test for flammable
refrigerants . 141
Annex QQ (normative) Methods for determining releasable charge . 147
Bibliography . 155
Figure 101 – Example of label for field charged units . 57
Figure 102 – Arrangement for heating test of appliances with supplementary air heater . 59
Figure 103 – Supply circuit for locked-rotor test of a motor of the single-phase type –
Revise as needed for three-phase test . 60
Figure 104 – Power spectral density profile for vibration test in 21.101 . 60
Figure 105 – Dimensional details for the weight in the area of the pressure ball . 60
Figure 106 – Measurement before and after the test . 61
Figure GG.1 – Unventilated area. 112
Figure GG.2 – Mechanical ventilation . 112
Figure GG.3 – Relevant heights h , h and h for calculation of A and m . 113
inst 0 rel min max
Figure GG.4 – Airflow direction . 114
Figure KK.1 – Front view of test apparatus labels . 120
Figure KK.2 – Test apparatus with dimensions . 121
Figure KK.3 – Top view of test apparatus . 122
Figure LL.1 – Example of test chamber design . 130
Table 101 – Power spectral density profile for vibration test . 38
Table 102 – UVC spectral irradiance measurement location . 56
Table AA.1 – Examples for operating temperatures of the appliance . 63
Table BB.1 – Selected information about refrigerants. 64
Table DD.1 – Mandatory clauses in each manual . 69
Table GG.1 – Outline of Annex GG (informative). 83
Table GG.2 – Circulation airflow . 88
Table GG.3 – Appliance with packaging . 95
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– 4 – IEC 60335-2-40:2022 © IEC 2022
Table GG.4 – Appliance without packaging . 95
Table GG.5 – Minimum air velocity . 107
Table GG.6 – Refrigerant leak rate (ṁ ) . 110
leak
Table LL.1 – Relationship among alarm set point, tolerance and test gas (informative) . 126
Table LL.2 – Gas and vapour concentrations . 128
Table LL.3 – Example of the test chamber design . 131
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IEC 60335-2-40:2022 © IEC 2022 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –
Part 2-40: Particular requirements for electrical heat pumps,
air-conditioners and dehumidifiers
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 60335 has been prepared by subcommittee 61D: Appliances for air-conditioning for
household and similar purposes, of IEC technical committee 61: Safety of household and similar
electrical appliances. It is an International Standard.
This seventh edition cancels and replaces the sixth edition published in 2018. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– Clause 1 – added thermoelectric heat pumps to the scope and increased maximum rated
voltage to 300 V for single phase appliances;
– Clause 7 – revised requirements for marking on the appliance and packaging, including a
symbol for minimum floor area and modifying the symbol for flammable refrigerants to
include the safety group per ISO 817;
– Clause 11 and Clause 19 – restructured for alignment with Part 1 and added requirements
for supplementary air heaters;
---------------------- Page: 7 ----------------------
– 6 – IEC 60335-2-40:2022 © IEC 2022
– Clause 13 and Clause 16 – revised requirement for leakage current for stationary class I
motor-operated appliances;
– Clause 21 – added requirements for particle foam material and revised requirements for
transport testing;
– Clause 22 – removed limit on the sum of refrigerant charges for appliances with multiple
refrigerating systems, and revised requirements for avoiding ignition sources, leak
detection systems, safety shut-off valves, and particle foam material;
– Clause 23 – added requirements to avoid contact between wires and refrigerant piping;
– Clause 24 – revised requirements for motor-compressors;
– Clause 30 – added requirements for resistance to heat of particle foam material;
– Annex BB – revised Table BB.1 with refrigerant information and added a link to ISO 817
refrigerant data;
– Annex DD – revised requirements for information in the manual for appliances with
flammable refrigerants;
– Annex EE – revised requirements for pressure testing;
– Annex FF – revised requirements for leak simulation tests;
– Annex GG – added requirements for applying releasable charge, added additional
coverage for A2 and A3 refrigerants, including new charge limits for appliances with
circulation airflow and for enhanced tightness refrigerating systems, and revised
requirements for enhanced tightness refrigerating systems using A2L refrigerant;
– Annex LL – revised requirements for refrigerant detection systems;
– Annex MM – revised simulated leak rate;
– Annex OO – deleted annex for conditioning internal wiring using UV light.
– Annex PP – new coverage of leak detection system confirmation test;
– Annex QQ – new coverage of method for determining releasable charge.
The text of this International Standard is based on the following documents:
Draft Report on voting
61D/491/FDIS 61D/493/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This part 2-40 is to be used in conjunction with IEC 60335-1:2010, its Amendment 1:2013 and
its Amendment 2:2016.
NOTE 1 When "Part 1" is mentioned in this standard, it refers to IEC 60335-1.
This part 2-40 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for electrical heat pumps,
air-conditioners and dehumidifiers.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies as
far as is reasonable. When this standard states "addition", "modification" or "replacement", the
relevant text in Part 1 is to be adapted accordingly.
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IEC 60335-2-40:2022 © IEC 2022 – 7 –
NOTE 2 The following numbering system is used:
• subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
• unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
• additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
• requirements: in roman type;
• test specifications: in italic type;
• notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and
associated noun are also in bold.
The following differences exist in the countries indicated below:
• 6.1: Class 0I appliances are allowed (Japan).
• 11.8: The temperature of the wooden walls in the test casing is limited to 85 °C (Sweden).
A list of all parts of the IEC 60335 series, under the general title: Household and similar
electrical appliances – Safety, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.
---------------------- Page: 9 ----------------------
– 8 – IEC 60335-2-40:2022 © IEC 2022
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its
provisions is entrusted to appropriately qualified and experienced persons.
Guidance documents concerning the application of the safety requirements for appliances can
be accessed via TC 61 supporting documents on the IEC website
https://www.iec.ch/tc61/supportingdocuments
This information is given for the convenience of users of this International Standard and does
not constitute a replacement for the normative text in this standard.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in normal
use taking into account the instructions. It also covers abnormal situations that can be expected
in practice.
This standard takes into account the requirements of IEC 60364 as far as possible so that there
is compatibility with the wiring rules when the appliance is connected to the supply mains.
However, national wiring rules can differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with in
Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal publications, basic safety publications and group safety publications covering a hazard are not
applicable since they have been taken into consideration when developing the general and particular requirements
for the IEC 60335 series of standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of the
requirements and, if found to be substantially equivalent, may be considered to comply with the
standard.
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IEC 60335-2-40:2022 © IEC 2022 – 9 –
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –
Part 2-40: Particular requirements for electrical heat pumps,
air-conditioners and dehumidifiers
1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of electric heat pumps, sanitary hot water heat
pumps and air conditioners, incorporating motor-compressors as well as hydronic fan coils
units, dehumidifiers (with or without motor-compressors), thermoelectric heat pum
...
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