| 摘要 |
<p>A control system for a reversible heat pump includes a system controller which polls the heating or cooling demands of zone controllers associated with a series of heat exchangers downstream of the heat pump. The system controller is operative to configure the heat pump in response to which of the demands is dominant . The system controller is also operative to change the configuration of the heat pump in response to a change in dominant demand. The implemented change in heat pump configuration is preferably premised on the temperature of water returned to the heat pump being within a predefined range of temperature . The return water temperature requirement may be overriden by the system controller if an acceptable period of time for allowing the returning water temperature to reach an acceptable temperature level has elapsed. <IMAGE> <IMAGE> <IMAGE></p> |
