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ELECTRICAL AND CONTROL SETTINGS
Auxiliary boiler or heater (Default for Output 3)
The auxiliary boiler or heater can be used when the heat pump cannot achieve the require temperature by itself.
Solar (Default for output 4)
This output is used when solar mode is enabled (from Unit controller) and the temperature in the solar panel rises above the water
temperature in the domestic hot water tank (DHWT). The connection between terminals 39 and 40 shall be closed in order to
activate the dedicated water pump for solar panel combination.
42
PMML0575 rev.1 - 09/2021
37
38
Auxiliary Heat
39
40
Solar (out)
(Output 4)
Free contact
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