| 摘要 |
A method of controlling a heating system includes regulating feed temperature of the heat carrying medium as a function of the differential between the feed medium temperature and the return medium temperature, and limiting the lower limit of the temperature of the feed medium to a predetermined minimum. An apparatus for carrying out the method includes first and second thermostats which determine feed and return medium temperatures and a control device responsive to the determined temperatures for adjusting feed medium temperature in accordance with the temperature difference. A further thermostat arrangement, in cooperation with a further control device, is provided for maintaining a minimum feed medium temperature, an auxiliary energy source being controlled by the further control device. |
