| 摘要 |
A mixer circuit is included and a) is fed from the header of the heat/cold generator, b) is fed regulated from the header of the heat/cold generator and from the return pipe of the direct heating circuit and c) is fed from the return pipe of the direct heating circuit. With a weak load the mixer circuit is solely fed from the return of the direct heating circuit and solely regulated by mixing in the return and in the event of heavy load is fed from the header of the heat/cold generator and the return of the direct heating circuit and is solely regulated by mixing the hot and cold flows.
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