GB/T 4706.32-2024 Safety of household and similar electrical appliances - Part 32 : Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers
1 Scope
This clause of GB/T4706.1-2024 is replaced by the following.
This document deals with the safety of electric heat pumps, air conditioners and dehumidifiers.
This document is applicable to 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.
Note 101: A definition of ‘motor-compressor’ is given in IEC 60335-2-34, which includes the statement that the term motor-compressor is used to designate either a hermetic motor-compressor or semi-hermetic motor-compressor.
Note 102: Requirements for containers intended for storage of the heated water included in sanitary hot water heat pumps are, in addition, covered by IEC 60335-2-21.
This standard 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 standard 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.
Note 103: Annex HH provides informative requirements on competence of persons. Criteria for competence of personnel for the purpose of certification schemes can be found in ISO 227121.
Unless specifications are covered by this standard, including the annexes, requirements for refrigerating safety are covered by:
- ISO 5149-1 : 2014, ISO 5149-1 : 2014 / AMD1 : 2015 and ISO 5149-1 : 2014 / AMD2 : 2021;
- ISO 5149-2 : 2014 and ISO 5149-2 : 2014 / AMD1 : 2020;
- ISO 5149-3 : 2014 and ISO 5149-3 : 2014 / AMD1 : 2021。
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.
Note 104: 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 may be specified, for example, by the management authorities.
Note 105: This standard 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).
2 Normative references
This clause of GB/T4706.1 - 2024 is applicable except as follows.
Addition:
GB/T 4706.17-2024 Safety of household and similar electrical appliances - Part 17 : Particular requirements for motor-compressors (IEC 60335-2-34 : 2021, IDT)
GB/T 5169.21-2017 Fire hazard testing for electric and electronic products - Part 21 : Abnormal heat - Ball pressure test method (IEC 60695-10-2 : 2014, IDT)
ISO 817 Refrigerants - Designation and safety classification
Note: GB/T 7778-2017 Number designation and safety classification of refrigerants (ISO 817 : 2014, MOD)
ISO 527-3 Plastics - Determination of tensile properties - Part 3 : Test conditions for films and sheets
Note: GB/T 1040.3-2006 Plastics - Determination of tensile properties - Part 3 : Test conditions for films and sheets (ISO 527-3 : 1995, IDT)
ISO 1302 Geometrical Product Specifications (GPS) - Indication of surface texture in technical product documentation
Note: GB/T 131-2006 Geometrical Product Specifications (GPS) - Indication of surface texture in technical Product documentation (ISO 1302 : 2002, IDT)
ISO 2578 Plastics - Determination of time-temperature limits after prolonged exposure to heat
ISO 5149-1 : 2014 Refrigerating systems and heat pumps - Safety and environmental requirements - Part1 : Definitions, classification and selection criteria), and Addendum 1 (2015) and Addendum 2 (2021)
Note: GB/T 9237-2017 Refrigerating systems and heat pumps - Safety and environmental requirements [ISO 5149 : 2014 (all parts), MOD ]
ISO 5149-2 : 2014 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2 : Design, construction, testing, marking and documentation, and Addendum1 (2020)
Note: GB/T 9237-2017 Refrigerating systems and heat pumps - Safety and environmental requirements [ISO 5149 : 2014 (all parts), MOD]
ISO 5149-3 : 2014 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 3 : Installation site, and Addendum 1 (2021)
Note: GB/T 9237-2017 Refrigerating systems and heat pumps - Safety and environmental requirements [ISO 5149 : 2014 (all parts), MOD]
ISO 5151 Non-ducted air conditioners and heat pumps - Testing and rating for performance
Note: GB/T 7725-2022 Room air conditioner (ISO 5151 : 2017, NEQ)
ISO 7010 Graphical symbols - Safety colours and safety signs - Registered safety signs
Note: GB/T 31523.1-2015 Safety information identification systems - Part 1 : Signs (ISO 7010 : 2011, MOD)
ISO 13253 Ducted air-conditioners and air-to-air heat pumps - Testing and rating for performance
ISO 13256 (all parts) Water-source heat pumps - Testing and rating for performance
ISO 13355 : 2016 Packaging - Complete, filled transport packages and unit loads - Vertical random vibration test
Note: GB/T 4857.23-2021 Packaging - Basic tests for transport packages - Part 23 : Vertical random vibration test method (ISO 13355 : 2016, MOD)
ISO 14903 Refrigerating systems and heat pumps - Qualification of tightness of components and joints
ISO 15042 Multiple split-system air- conditioners and air-to-air heat pumps- Testing and rating for performance
IEC 60068-2-52 Environmental testing- Part 2: Tests- Test Kb: Salt mist, cyclic (sodium, chloride solution)
Note: GB/T 2423.18-2012 Environmental testing - Part 2: Test methods - Test Kb: Salt mist, cyclic (sodium chloride solution) (IEC 60068-2-52 : 2017, IDT)
IEC 60079-0 Explosive atmospheres - Part 0: Equipment - General requirements
Note: GB/T 3836.1-2021 Explosive atmospheres - Part 1 : Equipment - General requirements (IEC 60079-0:2017, MOD)
IEC 60079-7:2015 Explosive atmospheres - Part 7:Equipment protection by increased safety “e”, and Addendum1(2017)
Note: GB/T 3836.3-2021 Explosive atmospheres - Part 3 : Equipment protection by increased safety “e” (IEC 60079-7:2015, MOD).
IEC 60079-14 Explosive atmospheres - Part 14: Electrical installations design, selection and erection
Note: GB/T 3836.15-2017 Explosive atmospheres - Part 15 : Electrical installations design, selection and erection (IEC 60079-14 :2007, MOD)
IEC 6007915:2017 Explosive atmospheres - Part 15: Equipment protection by type of protection “n”
Note: GB/T 3836.8-2021 Explosive atmospheres - Part 8: Equipment protection by type of protection “n” (IEC 60079- 15:2017, MOD)
IEC 60335-2-51 Household and similar electrical appliances - Safety - Part 2-51: Particular requirements for stationary circulation pumps for heating and service water installations
Note: GB 4706.71-2008 Household and similar electrical appliances - Safety - Particular requirements for stationary circulation pumps for heating and service water installations (IEC 60335-2-51:2012, IDT)
IEC 60695-1-10 Fire hazard testing - Part 1-10: Guidance for assessing the fire hazard of electrotechnical products - General guidelines
Note: GB/T 5169.2-2021 Fire hazard testing for electric and electronic products - Part 2 : Guidance for assessing the fire hazard - General guidelines (IEC 60695-1-10:2016, IDT)
IEC 60730-2-6 Automatic electrical controls- Part 2-6: Particular requirements for automatic electrical pressure sensing controls including mechanical requirements
Note: GB/T 14536.7-2010 Automatic electrical controls for household and similar use - Particular requirements for automatic electrical pressure sensing controls including mechanical requirements (IEC 60730-2-6 :2007, IDT)
IEC 62471 :2006 Photobiological safety of lamps and lamp systems
Note: GB/T 30117.3-2019 Photobiological safety of lamps and lamp systems - Part 3:Guidelines for the safe use of intense pulsed light source equipment on humans (IECTR 62471-3:2015, IDT)
3 Terms and definitions
This clause of GB/T4706.1-2024 is applicable except as follows.
3.1.4 Addition:
Note 101: If the appliance comprises electrical accessories, including fans, the rated power input is based upon the total maximum electrical power input with all accessories energized, when operating continuously under the appropriate environmental conditions. If the heat pump can be operated in the heating or cooling mode, the rated power input is based upon the input in the heating or in the cooling mode, whichever is the greater.
3.1.9 Replacement:
normal operation
conditions that apply when the appliance is mounted or installed as in normal use and is operating under the most severe operating conditions specified by the manufacturer
