MAXA i-32V518T - User Terminal Block

i-32V5 Air/water inverter heat pumps with axial fansi
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The power cables, electrical protecons and line fuses must be sized in accordance with what is reported in the unit's wiring diagram and in the
electrical data contained in the technical characteriscs table
Use a dedicated power line, do not power the appliance through a line to which other users are connected. Fasten the power cables securely and
make sure they do not come into contact with sharp corners. Use double insulated cables with copper wires.
The ground connecon must be carried out rst during the connecon phase, vice versa it must be removed last when the unit is disconnected.
In the event of any loosening of the power cable, it must be ensured that the tension of the acve conductors takes place before that of the
ground wire.
A main switch or a disconnecon device with adequate breaking capacity must be installed on the power supply line, which has a separaon of
the contacts in all the poles. The dierenal protecon switch must be compable with inverter appliances, it is recommended to install a type
B dierenal switch, the installaon of a dierent type switch could give rise to unmely trips.
The following table shows the recommended cable secons for a maximum length of 30 m. In any case, depending on type of installaon, the
locaon and the length of the cables (be it less than or greater than 30m), the electrical system designer will make an appropriate choice.
 Model



230V / 1ph i-32V504 3 x 2,5 mm2 L/N: 3,4 Nm – PE: 1 Nm
230V / 1ph
i-32V506 / i-32V508,
SL08
3 x 4 mm2 L/N: 3,4 Nm – PE: 1 Nm
230V / 1ph
i-32V510 / i-32V512,
SL12
3 x 4 mm2 L/N: 3,4 Nm – PE: 1 Nm
230V / 1ph
i-32V514 / i-32V516,
SL16
3 x 6 mm2 L/N: 3,4 Nm – PE: 1 Nm
400V / 3ph
i-32V510T / i-32V512T,
SL12T
5 x 2,5 mm2 L1/L2/L3: 3,4 Nm – N/PE: 1 Nm
400V / 3ph
i-32V514T / i-32V516T,
SL16T
5 x 2,5 mm2 L1/L2/L3: 3,4 Nm – N/PE: 1 Nm
400V / 3ph i-32V518T 5 x 4 mm2 L1/L2/L3: 3,4 Nm – N/PE: 1 Nm
The units comply with the electromagnec compability specicaons, however the designer of the electrical system must full appropriate
assessments to ensure the absence of interference.

The connecon terminal block is located under the machine cover. The terminal block must be connected respecng the notes below. The con-
necons shown below are standard. Other connecons are given in the MCO manual of the on-machine control of the i-32V5 (see "USER AND
INSTALLER CONFIGURATION TABLES"), according to the conguraons adopted.

TERMINAL CONNECTION TYPE
X-1 Connect the ground cable
Inlet for power supply 1-Ph/N/PE,230V, 50Hz
(only for sizes 06/08, SL08/10/12,SL12/14/16,
SL16
N Connect the neutral cable from the mains
L Connect the phase cable from the mains
PE Connect the earth cable
Input for power supply 3-Ph/N/PE, 400 Vac,
50Hz.
(only for size 10T,12T,14T,16T,18T, SL12T,16T)
N Connect the neutral cable from the mains
L1 Connect the phase cable L1 from the mains
L2 Connect the phase cable L2 from the mains
L3 Connect the phase cable L3 from the mains
X-5.2 Connecon of modbus RTU signal + for remote keyboard
Modbus communicaon
X-5.1 Connecon of modbus RTU signal – for remote keyboard
X-4.1
Connecon of modbus RTU earth reference for remote
keyboard (GND)
X-12.1 Remote keyboard power supply (12V, 50Hz, 500mA)
Outpu for power supply 12Vac, 50Hz
X-12.2 Remote keyboard power supply (12V, 50Hz, 500mA)
X-17.1/X-17.2 DHW probe (SAN1) Analogue or digital input
X-19.1/19.2 Plant remote probe (IMP1) Analogue input
X-20.1/X-20.2 Double set point (Q4) Analogue input
X-22.2 0-10V (+) signal input to modify set point
Analog input (ST10)
X-22.1 0-10V (-) signal input to modify set point
X-6.1/X-6.2 Plant heater (Rimp)
Output in single phase voltage 230Vac, 50Hz,
5A resisve, 1A inducve.
Can be used in versions without KA
X-9.1/X-9.2 Exchanger heater (R2)
Output in single phase voltage 230Vac, 50Hz,
5A resisve, 1A inducve.
Can be used in versions without KA
X-10.1/X-10.2 Base heater (R3)
Output in single phase voltage 230Vac, 50Hz,
5A resisve, 1A inducve.
X-11.1/X-11.2 Domesc hot water valve outlet (VS1)
Changeover contact, single phase voltage
230Vac, 50Hz, 5A resisve, 1A inducve.