INSTALLATION
Power supply
14
| WPL 10 AC | WPL 10 ACS
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11. Power supply
Note
Observe the operating and installation instructions of the
WPM 3 heat pump manager.
The connection must only be carried out by a qualified contractor
and in accordance with these instructions.
Permission to connect the appliance may need to be obtained from
your local power supply utility.
The terminals are located in the wiring chamber of the appliance.
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Observe chapter "Preparing the electrical installation".
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Use appropriate cables in accordance with local regulations
for all connections.
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Route all cables and leads through strain relief fittings.
11.1 Access to the wiring chamber
26
�0
3�
01
�1
54
4
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Remove the cover.
26
�0
3�
01
�1
552
1
1 Cable entries
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Thread the connecting cables from below through the cable
entries upwards to the connecting chamber.
26
�0
3�
01
�1
53
5
1
1 Wiring chamber
11.2 Power supply WPL 10 AC (three-phase)
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Connect cables according to the following diagram.
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Connect the electric emergency/booster heater 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 undershoots the dual mode point, the
electric emergency/booster heater safeguards both the
heating operation and the delivery of high DHW temper-
atures.
Emergency mode
Should the heat pump suffer a fault that prevents its
continued operation, the heating output will be covered
by the electric emergency/booster heater.
Heat-up program
(only for underfloor
heating systems)
Where return temperatures are <25 °C, the electric
emergency/booster heater must provide the necessary
heat for screed drying.
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 guar-
anteed during the defrost cycle.
When the heat-up program has ended, 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 emer-
gency operation cannot be selected.
Pasteurisation
control
The electric emergency/booster heater starts automati-
cally 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.