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iNSTaLLaTiON
Power supply
www.stiebel-eltron.com
WPL E | WPL cool |
17
26
0
3
01
1
726
1
1 Control panel
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Observe the information in the "Preparations / Electrical in-
stallation" chapter.
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Remove the control panel from the casing.
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Use appropriate electrical cables in accordance with local
regulations.
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Check that the strain relief fittings are working as intended.
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Connect the heating circulation pump to the heat pump man-
ager in accordance with the technical guides.
Terminals X3: Appliance and electric emergency/booster heater
(DHC)
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Connect the appliance to terminal X3.
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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 undershoots the dual mode point, the
electric emergency/booster heater safeguards both
the heating operation and the delivery 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)
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
guaranteed 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, emer-
gency mode is not available.
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.
X3
PE
1
2
26
0
3
01
0
94
8
1
Heat pump power supply (WP)
L1, L2, L3, N, PE
2
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
!
Material losses
The compressor in the appliance can only turn in one
direction. If the appliance is not connected correctly, the
compressor remains in operation for 30 seconds then
switches off.
On the heat pump manager display, the fault message NO OUTPUT
appears.
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To change the direction of the rotating field, when the power
is disconnected, swap over two phases.
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Cover and seal the mains terminal (X3) when all electric ca-
bles have been connected.