10
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INSTALLATION
PREPARING FOR INSTALLATION
The products of corrosion, e.g. rusty sludge, can settle inside the
heat pump condenser and result in a lower output by reducing
the cross-section, or in a shutdown being activated by the high
pressure switch.
10.5.2 Second external heat generator
For dual mode heating systems, always connect the heat pump
into the return of the second heat generator (e.g. oil boiler).
High heating water temperature: In dual mode heating systems,
the return water from the second heat generator can flow through
the heat pump, immediately after it has been switched off, with
a max. temperature of 60 °C. The temperature may be 70 °C no
sooner than ten minutes after the heat pump has been shut down.
10.5.3 Filling the heating system
Fill the heating system via the drain valve.
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1 Drain, heating side
Water quality
A fill water analysis must be available prior to charging the sys-
tem. This may, for example, be requested from the relevant water
supply utility.
!
Material losses
To avoid damage as a result of scaling, it may be neces-
sary to soften or desalinate the fill water. The fill water
limits specified in chapter "Specification / Data table"
must always be observed.
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Recheck these limits 8-12 weeks after commission-
ing and as part of annual system maintenance.
Note
With conductivity of >1000 μS/cm, desalination treatment
is recommended in order to avoid corrosion.
Note
Suitable appliances for water softening and desalinating,
as well as for charging and flushing heating systems, can
be obtained via trade suppliers.
Note
If you treat the fill water with inhibitors or additives, the
same limits as for desalination apply.
10.5.4 Venting the heating system
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Vent the pipework thoroughly.
10.6 Safety temperature controller for underfloor
heating system
!
Material losses
In case of failure, in order to prevent an excessively high
flow temperature in the underfloor heating system, we
generally recommend the use of a safety temperature
controller to limit the system temperature.
10.7 Power supply
Note
Observe the heat pump manager operating and instal-
lation instructions
Only qualified electricians must carry out the installation in ac-
cordance with these instructions.
Permission to connect the appliance may need to be obtained from
your local power supply utility.
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Observe chapter “Preparing the electrical installation”.
DANGER Electrocution
Before any work, isolate the appliance from the power
supply at the control panel.
Note
The terminals are located in the appliance control panel.
Note
If the appliance is sealed, observe chapter “Removing
the casing parts”.
Use appropriate cables in accordance with local regulations for
all connections.
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Open the control panel’s cover flap. To do so, remove the fix-
ing screws on the side at the top of the control panel.
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Route all connecting cables and sensor leads through the en-
tries provided at the top of the back panel (see chapter “Con-
nections and dimensions”).
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Route all cables and leads through the strain relief fittings.
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Connect cables according to the following diagrams.
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Then check the function of the strain relief fittings.
Note
When closing the appliance, observe chapter “Fitting the
casing parts”.
