In the OpenTherm page, in the “System Generators cascade control”it is possible to:
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In the “ Generators Demand Status” it is possible to see if the OpenTherm Heating/Cooling demand is active and with what set point (in the example above it is active and with 16°C set point).
Note
We generally speak of OpenTherm Heating because it was created to control boilers, but the protocol itself also implements the cooling part. Therefore, it is possible to manage also the heat pumps that implement this protocol.
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If there is only one OpenTherm generator then the Priority of the generator is irrelevant, as well as the algorithm chosen for the cascade logic, it will always and only be the generator to start according to the priority assigned to the OpenTherm Source in the “System Generators cascade control”
Warning
G0 is to be used only if a DOT display is installed as master that has OpenTherm on board.
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