FIELD: heating systems.
SUBSTANCE: heating and/or conditioning system 1 includes main hydraulic circuit 6 and additional hydraulic circuit 9 and has at least one circulation pump 2 for working fluid which is brought into operation with electric motor and controlled with electronic control device 10. Method for determining the parametre typical for such system 1 involves initial measurement of circulating working fluid flow, which is performed immediately behind pump 2 when fluid is not supplied. Further flow measurement of circulating working fluid is performed only in additional hydraulic circuit 9; at that, the above first and second measurement is performed by means of devices related to control device 10 of pump 2, thus providing output signal corresponding to percentage of non-freezing impurity in circulating working fluid or change of heating capacity of system.
EFFECT: providing possibility of receiving the information on system state and system operation mode control, for example depending on percentage of impurity in system working fluid.
11 cl, 4 dwg
