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• Check the system pressure again (info key 3) and top
up with water if required.
Please note:
During continuous operation, the heating circuit is
automatically vented via the high efciency pump.
18. Filling the heating system / trap
Fig: Pressure indication on the control unit display
Info button
3
Fig: Filling facility integrated in the appliance on delivery
Fill vakve
Fillingtheheatingsystemviathellingfacility
• Open the ll valve on the lling facility.
• Fill the heating circuit via the DHW circuit.
• Close the ll valve and test the entire appliance and
the component unions for tightness.
• Observe all information on venting the system (see
above)
Note that a pipe separator must be installed in
the DHW line during installation as specied in
EN 171.
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