| 摘要 |
PROBLEM TO BE SOLVED: To provide a heating system capable of easily realizing the prevention of a tank from becoming a full heat storage state or a non-heat storage state as compared with switchover of capability modes under feedback control.SOLUTION: A heat pump unit control section determines upper-side operation time and lower-side operation time so that average heating capability of a heat pump 21 matches target heating capability if the heat pump operates alternately in an upper-side capability mode and a lower-side capability mode. The heat pump is actuated while alternately switching over between heat pump operation in the upper-side capability mode over the determined upper-side operation time and heat pump operation over the determined lower-side operation time. Therefore, it is possible to easily realize the prevention of a tank from becoming a full heat storage state or a non-heat storage state as compared with switchover of capability modes under feedback control.SELECTED DRAWING: Figure 4 |
