Wolf BWL-1 S Installation And Operating Instructions Manual page 39

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
Note: If the power supply is without power-OFF, insert a bridge.
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.
25.2.3 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:
Terminals X1 9 and 10 (SG-0)
open
open
closed
closed
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
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25. Power supply to the indoor module
Terminals X1 11 and 12 (SG-1)
open
closed
open
closed
Function
Heat pump standard mode
Start recommendation - temperature raising
External deactivation (see also power-OFF)
Start command - temperature raising
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