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INSTALLATION
ELECTRICAL CONNECTION
11. Electrical connection
Note
Please observe the heat pump manager operating and
installation 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.
11.1 Control panel
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.
26�03�01�1726�
1
1 Control panel
Observe the information in chapter "Preparations / Electrical
installation".
Remove the control panel from the casing.
Use appropriate cables in accordance with local regulations.
Check the function of the strain relief fittings.
Connect the heating circuit pump to the heat pump manager
in accordance with the technical guides.
Connection X3: Appliance and electric emergency/booster
heater (DHC)
Connect the appliance to terminal X3.
Connect the electric emergency/booster heater to terminal X3
if you want to utilise the following appliance functions:
Appliance func-
tion
Effect of the electric emergency/booster
heater
Mono energetic op-
eration
If the heat pump cannot reach the dual mode point,
the electric emergency/booster heater ensures both
the heating operation and the provision of high DHW
temperatures.
Emergency mode
Should the heat pump suffer a fault that prevents its
continued operation, the heating output will be cov-
ered by the electric emergency/booster heater.
Heat-up program
(only for underfloor
heating systems)
The electric emergency/booster heater must provide
the drying heat in case of return temperatures <25°C.
With these low system temperatures, the drying heat
must not be provided by the heat pump, otherwise
the frost protection of the appliance can no longer be
guaranteed during the defrost cycle.
After expiry of the heat-up program, you can discon-
nect the electric emergency/booster heater if it is not
required for the appliance operation.
Please note that during the heat-up program, the
emergency mode cannot be selected.
Pasteurisation control
The electric emergency/booster heater starts automat-
ically when the pasteurisation control is active in order
to regularly heat the DHW to 60 °C to protect it against
the growth of legionella bacteria.
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