scope:

This clause of part 1 is replaced by:

This part of IEC 335 applies to the safety of electric heat pumps, including sanitary hot water heat pumps, air-conditioners, and dehumidifiers incorporating sealed motor compressors, their maximum rated voltages being not more than 250 V for single phase appliances and 600 V for all other appliances.

Appliances not intended for normal household use but which nevertheless may 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 may consist of one or more factory made assemblies. If provided in more than one assembly, the separate assemblies are to be used together, and the requirements are based on the use of.matched assemblies.

NOTES

1. A definition of 'sealed motor-compressor* is given in IEC 335-2-34.

2. Requirements for refrigeration safety are covered by IS0 5149. and requirements for containers intended for storage of the heated water included in sanitary hot water heat pump8 are, in addition, covered by IEC 335-2-21.

3. For appliances using flammable refrigerants, additional requirements are under consideration.