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25.2.1 Power-OFF
The PSU can temporarily block the compressor or the electric heating by means of an external switch command (floating contact).
The system's frost protection and operation of the heating circuit pump continue.
Terminals X1 - 9 and 10 open
Power-OFF active
Terminals X1 - 9 and 10 bridged
Power-OFF inactive
25.2.3 Smart grid
The Smart Grid Ready functionality enables the PSU to optimally adjust grid capacity use through intelligent control of consumers.
By means of an external switch command (via floating contacts SG-0-/SG-1) of the PSU, the set temperatures for heating and/or
DHW can be raised, or the compressor and electric heating can be blocked or activated respectively. For this, two digital inputs
are connected as follows:
Parameter settings:
WP025
Smart Grid
On
WP026
Ext. raising htg
0-20 °C
WP027
Ext. raising DHW
0-20 °C
WP028
External activation
Off / HP / HP+el htg
Terminals X1 9 and 10 (SG-0)
Terminals X1 11 and 12 (SG-1) Function
open
open
Heat pump standard mode
open
closed
Start recommendation - temperature raising
closed
open
External deactivation (see also power-OFF)
closed
closed
Start command - temperature raising
25.2.2 PV (photovoltaics) temperature raising
The set temperatures for heating and/or DHW can be raised via an external switch command (floating contacts). The minimum
duration of temperature raising is 5 minutes, so that fluctuations in PV output (contact drops briefly) do not cause the heat pump
to switch off.
Terminals X1 - 11 and 12 open
PV raising inactive
Terminals X1 - 11 and 12 bridged
PV raising active
Parameter settings:
WP025
Smart Grid
OFF
WP026
Ext. raising htg
0-20 °C
WP027
Ext. raising DHW
0-20 °C
Note: PV temperature raising is not possible during power-OFF.
25. Power supply to the indoor module
Note: If the power supply is without power-OFF, insert a bridge.