| 摘要 |
A control unit (1, 2) for a heating system (70) having at least two heating pipeworks (72) and (71, 73) and at least two energy sources for heating liquid circulating in the pipeworks, one being a renewable energy source such as a boiler stove (30) and the other a conventional energy source, such as a gas boiler (35). The control unit comprises a base panel (5), at least a pair of interconnected valves (4, 4a) mounted on the base panel and an electronic control module for controlling the valves. The first valve (4) is directly connected to the renewable energy source and the first heating pipework and the second valve (4a) is directly connected to the conventional energy source and the the second pipework. The electronic control module configured to control the valves so that the liquid heated by the renewable energy source is directed into the first and/or the second pipework and/or so that liquid heated by the second energy source is directed into the second heating pipework as and when determined by the electronic control module. <Figure 1> |
