Internal Unit Electrical Connection - elco AEROTOP SPLIT M-RX Guide D'installation

Installation guide

Internal Unit electrical connection

Before any operation on the system,
turn off the main power. Observe the
phase and neutral connections.
To access the control panel of the inter-
nal unit, proceed as follows:
Remove the three screws (A) indicated
in fi gure and remove the cover of the
electrical panel (B).
When opening the internal unit, you
will fi nd the following connections:
MOD BUS- Communication with the exter-
nal unit. Observe the polarities.
ANODE - Tank Protech anode connection.
Observe the electrical polarities.
TA1 - Ambient contact thermostat
connection, zone 1.
TA2 - Ambient contact thermostat
connection, zone 2.
SE - Outdoor temperature sensor
connection.
TNK - Tank sensor connection.
BUF - Buff er sensor connection.
BUS - Remocon Plus connection.
IN-AUX - Humidistat/auxiliary input
connection.
HV IN 3 - 230V Input.
Select the operation mode by
the parameter 17.1.2.
PV Integration: through this in-
put is possible to use the DHW
tank as energy storage in case of
a surplus of energy production
by a PV system.
Connect the output contact
from an energy meter to the
PV input, the output contact is
closed when the energy produc-
tion is higher than a threshold
settable on the energy meter.
HV IN 1 - 230V Input.
Select the operation mode by
the parameter 17.1.0.
• EDF (Night tariff ): applying a
230V signal to the input the
tank charge is enabled accor-
ding to theDHW modes HC-HP
or HC-HP 40°C
selectable by the parameter
17.5.2
• SG Ready 1: input signal nr 1
for the SG Ready standard (see
paragraph SMART GRID READY
72 / GB
STANDARD).
HV IN 2 - 230V Input.
Select the operation mode by
the parameter 17.1.1.
• DLSG (load shedding): this
input signal, if supplied by the
electrical grid provider, disable
the heating resistors.
• SG Ready 2: input signal nr 2
for the SG Ready standard (see
paragraph SMART GRID READY
STANDARD).
OUT-AUX1 - Auxiliary output,
free potential contact
(see parameter 17.1.4)
ST1 - Safety thermostat connection
(230 V) for under-fl oor system
(shunt connection).
PM AUX - Auxiliary pump connection.
V 1 - Diverter valve connection for
domestic water circuit
V 2 - Diverter valve connection
for cooling circuit
L 1 - Three-phase power phase 1
connection (230 V)
for internal unit
L 2 - Three-phase power phase 2
connection (230 V)
for internal unit
L 3 - Three-phase power phase 3
connection (230 V) for internal
unit
N - Connection of the neutral point
(230 V) of the internal unit .
- Earth connection of the internal
unit .
The size and length of the cables must
be sized according to the power indi-
cated on the data plate of the internal
unit.
Ensure that the power cables are
properly tightened in order to avoid
overheating.
WARNING
After carrying out the connections
between the indoor and outdoor
units, put back both panels of the
respective units.
A
B
D
C