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INSTALLATION
Installation
11.8 Venting the heating system
Prior to venting, open the quick-action air vent valve in the
multi function assembly (MFG).
D0000036346
1
2
1 Quick-action air vent valve
2 PCB
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Material losses
The air vent in the knurled cap of the quick-action air vent
valve must not point towards the MFG PCB.
Turn the air outlet in the direction shown in the fol-
lowing diagram.
D0000036347
!
Material losses
Close the quick-action air vent valve again after
venting.
Check for tightness.
11.9 DHW heating
For DHW heating, a DHW cylinder with internal indirect coils is
required. The minimum coil surface area required is 3 m³.
A three-way valve is integrated into the WPF between the DHW
heating circuit and the central heating circuit.
Thoroughly flush the pipework before connecting the heat
pump. Foreign bodies, such as rust, sand and sealant, can
impair the operational reliability of the heat pump. We rec-
ommend installing our filter assembly in the DHW heating
circuit (see chapter “Accessories”).
Connect the DHW flow of the appliance to the upper coil
connection of the DHW cylinder (see "Specification /
Connections").
Connect the DHW return of the appliance to the lower coil
connection of the DHW cylinder.
Note
If no DHW heating is being connected, connections e22
(cylinder flow ) and e23 (cylinder return) are to be hy-
draulically interconnected.
11.10 Operation with buffer cylinder
Install the TF6 return sensor supplied.
Connect the return sensor to the control panel.
At the heat pump manager, set parameter BUFFER MODE to
ON.
11.11 Fitting the push-fit connectors
Note
Never install the push-fit connectors in the DHW line.
Only install the push-fit connectors in the heating circuit
and the solar circuit.
!
Material losses
Tighten the screw cap of the push-fit connector by hand.
Never use a tool.
!
Material losses
Support sleeves are required when using plastic pipes.
How the push-fit connectors work
The push-fit connectors are equipped with a retainer with stain-
less steel serrations and an O-ring seal. In addition, the push-
fit connectors are equipped with the “twist and lock” function.
Simply turning the screw cap by hand will secure the pipe in the
connector and push the O-ring against the pipe to seal it.
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