| 摘要 |
PROBLEM TO BE SOLVED: To allow a heat pump water heater to perform a boiling operation during the time a user desires as much as possible.SOLUTION: A boiling object selection unit (46) determines an operation schedule by selecting an operation object water heater of each reference time zone (ts) so that a supply power amount from a commercial power supply (10) to a collective housing (15) becomes equal to or less than an upper limit power amount (Wu). When a touch panel (86) receives a change request of the operation schedule, a boiling object update unit (47) changes a first scheduled time zone in which the change object water heater performs a boiling operation to a second scheduled time zone. An operation command unit (48) allows each of heat pump water heaters (60a, 60b, 60c, 60d, 60e,...) to execute the boiling operation by the updated operation schedule.SELECTED DRAWING: Figure 4 |
