Electrical Connection; Installation Versions - Stiebel Eltron ETW 120 Plus Utilisation Et Installation

INsTALLATIoN
Installation
f Route the power cables and connecting cables for the charge f
and discharge controllers into the appliance through the
apertures in the back panel and connect them (see chapter
"Specification / Wiring diagram").
f Remove approx. 260 mm of insulation from the connecting f
cables and trim as required. The cables must not be placed
next to the air slot in the side panel.

12.4 Electrical connection

12.4.1 General information
WARNING Electrocution
If the appliance is connected to an automatic charge con-
trol system, there may be voltage at terminals A1/Z1 and
A2/Z2 even if the fuses have been removed.
The electrical connection of the heating elements is made with
3/N/PE~400 V. For the ETW 120 Plus and ETW 180 Plus, a connec-
tion with 1/N/PE~230 V is also possible.
The connection is possible with NYM. The number of power cables,
conductors and cross-sections depends on the connected load of
the appliance and the type of power connection, as well as on
special regulations from the power supply utility.
Observe the wiring diagram and output stages (see chapter "Spec-
ification").
12.4.2 Connecting the appliance
WARNING Electrocution
Ensure the earth conductor is properly connected.
WARNING Electrocution
Connection cables must not be damaged, removed or
pulled out of the appliance.
f Route the connecting cables accordingly. f
Note
There must be continuous voltage at terminals L and N
on terminal strip X2.
f Apply strain relief to the power cables and connect them f
according to the wiring diagram inside the appliance (on the
inside of the r.h. side panel), or according to the wiring dia-
gram in chapter "Specification".
If the angled panel located in the wiring chamber interior for
mounting the mains terminals is not easily accessible because
the side clearance is inadequate, you can pivot it forwards after
undoing the retaining screw.
12.4.3 Control without heating contactor
If a heating contactor is not installed (may be required by the
power supply utility), the function in the storage heater's PCB
can be used.
f For this, connect either the LF and N power-OFF signals or f
the SH and N signals of the relevant charge control system
directly to the LF/SH and N terminals of the storage heater.
f In the configuration menu, set parameter P15 to 1 (see chap- f
ter "Installation / Settings").
www.stiebel-eltron.com
The heating elements in the appliance are not switched on until
the LF from the power supply utility has been enabled and the
electronic charge controller has enabled charging.
12.4.4 Appliance type plate
Note
Document the connected load and the nominal charge
duration.
f Mark the relevant boxes on the type plate. f

12.5 Installation versions

1
3
1 Floorstanding installation
2 Installation with sufficiently load bearing wall with wall
mounting bracket (ETW 120-360 Plus)
3 Installation with insufficiently load bearing wall with support
bracket
4 Installation with non-load bearing wall with floor bracket
12.5.1 Floorstanding installation
The surface on which the appliance is installed must be level and
offer sufficient load bearing capacity. For details regarding the
appliance weight, see chapter "Specification / Data table".
f If in doubt, consult a qualified structural engineer. f
The appliances may be installed on any conventional floor, al-
though PVC, parquet and long- or deep-pile carpets may be af-
fected by pressure and heat. In such cases, heat-resistant support
plates must be used (to be provided on site).
2
4
ETW 120-480 Plus | 41