This European Standard deals with the safety of electric heat pumps, including sanitary hot water heat pumps, air-conditioners, and dehumidifiers incorporating motor-compressors and hydronic room fan coils, their maximum rated voltages being not more than 250 V for single phase appliances and 600 V for all other appliances. Appliances and machines intended to be used in household, commercial applications, in shops, in light industry and on farms, are within the scope of this standard. Additional requirements for appliances and machines intended for commercial use are given in Annex ZE. NOTE Z1 Examples of appliance for household environment are appliances for typical housekeeping functions used in the household environment and appliances for typical housekeeping functions used by non expert users - in shops, offices and other similar working environments, - in farm houses, - by clients in hotels, motels and other residential type environments, - in bed and breakfast type environments. NOTE Z2 Household environment includes the dwelling and its associated buildings, the garden, etc. NOTE 103 This standard specifies particular requirements for the use of flammable refrigerants. This standard does not apply to - humidifiers intended for use with heating and cooling equipment (EN 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).