Automatic hydraulic balance control for central heating system - involves identifying optimum thermostat valve settings for each room and storing settings in central control unit as max valves

摘要

Hydraulic balance is achieved automatically in a heating system with several heating units of different configuration and with different hydraulic conditions. Before the heating system is handed over, all heating units (e.g. radiators) have their thermostat valves fully open and the resultant temp. is measured in each room. In rooms with too much heat the valves are throttled back until the correct temp., is obtained in each room. If all the valves are sufficiently open this setting is input into the central control unit as the max. setting for all further control actions. If the valves are not sufficiently open the operation is repeated with a lower source temp.. ADVANTAGE - Simple and foolproof without need for expert knowledge.