| 摘要 |
<p>In the present invention, a heating bypass valve (119) is provided to a low temperature heating bypass path (118), and at the downstream side of the low temperature heating bypass path (118), a buffer tank (49) is provided to a heating circulation path (40) on the upstream side of a heat pump heat exchanger (55). If heating implementation conditions have not been established, and a prescribed period (M) has not elapsed since the cessation of operation of the heat pump (51), a controller (150) causes the low temperature heating bypass valve (119) to open, and causes the heat pump (51) to continue operating.</p> |
