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Safety switch and earth-fault breaker
Safety switch
All heating installations must be preceded by a safety switch.
Earth-fault breaker
If the heating installation is to be connected across an earth-fault breaker
then a separate earth-fault breaker for the heating installation is recom-
mended. Comply with applicable regulations.
Emergency operation
The heat pump is equipped with emergency operation which means that the
additional heat takes over the heating production in the event of faults in the
control unit. Read more about emergency operation in the User Guide.
There is a thermostat for fl ow temperature during emergency operation on
the AHB circuit board. It is factory set to 35°C which is the normal setting
for the underfl oor heating system. If the heating system only has radiators
the setting must be increased to 55°C.
Connecting to the power supply
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