The MaxiManager can control multiple CHP units with boiler(s) and heat storage(s).
CHP unit selection and deselection guided by
- Heat demand
Guiding parameters for the control of the CHP units are the return flow temperature and the filling level of the storage(s). The selection and deselection of single CHP units depends on the CHP unit’s running time to achieve an even utilization of the total plant. If a CHP unit is not available, the next one is selected. If only one CHP unit runs and still produces more heat than demanded, it switches to partial load.
- Power demand
Selection and deselection via a contact of the customer side building control system. Optional also with >Zero feed-in control< to avoid feeding power into the mains or reserve power mode for peak load requests.
- Emergency power operation
If equipped with battery pack and emergency cooler, the CHP units can optionally take over the supply of an emergency power bar in case of mains failure – seamless or (when CHP units are idle) within seconds via instant starts. Also see configuration option emergency power operation.
- Gas storage filling level
At sewage or biogas plants, the filling level of the gas storage is regarded to optimize the operation of the CHP units.
Boiler selection and deselection
The CHP units generally run with priority. At higher heat demand or unavailability of the CHP units, the boilers are selected automatically.
Heat storage management
Depending on the filling level of the heat storages, the heat generators are selected and deselected by up to 6 temperature sensors and the storage filled or discharged.
Extended storage management to empty the heat storage before expected peak power loads.
Connection to the building management system (BMS)
Many options for the communication with a BMS are available – from digital standard contacts to customer adapted bus protocols as Profibus-DP, Modbus, LONBus and others.
Combination with RemoteManager