24
5.8.3
User terminal block
The connection terminal block is located under the machine cover. For access, see the instructions in paragraph 5.8.1. The
terminal block must be connected respecting the notes below.
The connections shown below are standard. Other connections are given in the MCO manual of the on-machine control of the i-
32V5 (see "USER AND INSTALLER CONFIGURATION TABLES"), according to the configurations adopted.
CAUTION: it is important to keep the high voltage cables separated from the very low voltage ones
TERMINAL
CONNECTION
TYPE
X-1
Connect the ground cable
Inlet for power supply
1-Ph/N/PE,230V, 50Hz
(only for sizes 06/08/10/12/14/16)
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 sizes 10T,12T,14T,16T and 18T)
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
Connection of modbus RTU for remote keyboard
Modbus communication
X-5.1
Connection of modbus RTU signal – for remote keyboard
X-4.1
Connection of modbus RTU earth reference for remote keyboard
(GND)
X-12.1
Remote keyboard power supply (12V, 50Hz, 500mA)
Output 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
Analogue 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 resistive, 1A inductive.
Can be used in versions without KA
X-9.1/X-9.2
Exchanger heater (R2)
Output in single phase voltage 230Vac,
50Hz, 5A resistive, 1A inductive.
Can be used in versions without KA
X-10.1/X-10.2
Base heater (R3)
Output in single phase voltage 230Vac,
50Hz, 5A resistive, 1A inductive.
X-11.1/X-11.2
Domestic hot water valve outlet (VS1)
Changeover contact, single phase voltage
230Vac, 50Hz, 5A resistive, 1A inductive.
X-14.1/X-14.2
Double set-point valve output (VDS1)
Changeover contact, single phase voltage
230Vac, 50Hz, 5A resistive, 1A inductive.
X-16.1/X16.2
Summer/winter mode change input from remote (to activate the
function, see the relevant paragraph in the MCO manual)
Voltage-free digital input
X-15.1/X15.2
Remote on/off input
(closed=machine on / open=machine off)
Voltage-free digital input
