Identifies principles for construction, use and test of circulation pumps for heating and domestic hot water service installations of rated power input less than or equal to 200 W. Those with rated power input above 200 W and up to 300 W may be applicable, but this depends on agreement between purchaser and supplier. Circulation pumps for commercial and professional use with rated power input above 200 W are not included. Technical specifications are only applicable to glandless type circulation pumps.