14 | WPL 10 ACS WWW.STIEBEL-ELTRON.COM
INSTALLATION
MOUNTING
10.11.2 Power supply WPL 10 AC (three-phase)
Connect your power cable according to the following
diagram.
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
operation
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 tem-
peratures.
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)
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 guar-
anteed 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 emer-
gency mode 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.
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2
3
4
5
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6
1 X5 Electric emergency/booster heater (DHC)
L1, L2, L3, N, PE
Connected
load
Terminal assignment
2.6 kW L1 N PE
3.0 kW L2 N PE
3.2 kW L3 N PE
5.6 kW L1 L2 N PE
5.8 kW L1 L3 N PE
6.2 kW L2 L3 N PE
8.8 kW L1 L2 L3 N PE
2 X3 Power supply (heat pump, compressor)
L1, L2, L3, N, PE
3 X4 Control voltage
Mains supply: L, N, PE
4 X2 Low voltage (BUS cable)
BUS High H
Bus Low L
BUS earth
BUS “+” (is not connected)
5 Earth terminal for screening the LV lead
6 Ribbon heater
Mains supply: L, N, PE
Earth the LV lead by inverting the screen over the external
sheath and clamping it under the earth terminal.
Then check the function of the strain relief fittings.
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