IEC 60335-2-40 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 is 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 danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are covered by IEC 60335-2-40.
As far as practical, IEC 60335-2-40 deals with common hazards presented by appliances encountered in normal use and assumes that competent persons safely handle installation, servicing, decommissioning, and disposal and that accidental release of refrigerants is avoided. However, it does not prescribe the criteria to ensure the competence of persons during installation, servicing and disposal. Safety requirements during disposal are not specified.
IEC 60335-2-40:2022 text has been approved in Europe as EN IEC 60335-2-40:2024 without any changes.
