iNSTALLATiON
Electrical connection
12
| WPL 47 | WPL 57
www.stiebel-eltron.com
11. Electrical connection
11.1 General
Note
The leakage current of this appliance can be > 3.5 mA.
Since the unit is connected to the distribution board, the
leakage current from the unit and the residual currents
of the installation are recorded together during a residual
current test.
f
Evaluate the percentage of leakage current from the
unit and the residual currents in the test result.
f
Take into account the local and unit-specific condi-
tions at the test location, as well as any insulation
faults or other influencing factors.
Note
Please observe the instructions for the heat pump man-
ager.
The connection must only be made 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.
11.2 Terminal box
WARNING Electrocution
Before working on the appliance, isolate it from the
power supply at the control panel.
The terminal box is located on the air outlet side.
f
Open the junction box as shown:
26
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3�
01
�1
41
2
Note
The wiring diagram of the appliance is located behind
the cover.
Use appropriate cables in accordance with local regulations for
all connections.
f
Route the cables through the knock-out in the floor, through
the cable trunking and upwards into the junction box.
f
Route the electrical cables through the cable entries with
strain reliefs.
f
Check that the strain relief fittings are working as intended.
f
Connect the circulation pumps for the heating and buffer
cylinder to the heat pump manager in accordance with the
engineering documents.