Gebwell GEMINI 40 Installation, Operation And Maintenance Manual page 19

RESERVOIR TANK FOR THE DOMESTIC HOT
WATER SYSTEM
If the consumption of domestic hot water is high, the heat pump
can be supplemented with an electrically heated additional res-
ervoir. The heat pump heats the cold water in the internal reser-
voir, after which the water is led to the external buffer reservoir.
The electric resistance of the external reservoir maintains the
temperature at the desired level. The system uses the external
reservoir to prepare for spikes in the consumption of heat energy.
If there are radiators in the circulation of hot water, the connec-
tion must be confirmed by an HV engineer.
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