Picco R32
Inverter air/water heat pumps with axial fan
23
5.9.3
User terminal block
The connection terminal block is located under the machine cover. For access, see the instructions. The terminal block must be connected re-
specting the notes below.
The connections shown below are standard. Other connections are given in the MCO manual of the on-machine control (see "USER AND IN-
STALLER 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
PE
Connect the groung wire
Power input 3-Ph/N/PE, 400
Vac, 50Hz
N
Connect the neutral cable from the mains
Power input 3-Ph/N/PE, 400
Vac, 50Hz
L1
Connect L1 phase cable from the mains
Power input 3-Ph/N/PE, 400
Vac, 50Hz
L2
Connect L2 phase cable from the mains
Power input 3-Ph/N/PE, 400
Vac, 50Hz
L3
Connect L3 phase cable from the mains
Power input 3-Ph/N/PE, 400
Vac, 50Hz
XGND
Modbus RTU + signal connection for remote
keyboard
Modbus communication RS RTU RS 485
XR-
Modbus RTU - signal connection for remote
keyboard
Modbus communication RS RTU RS 485
XR+
Modbus RTU ground reference connection for
remote keypad (GND)
Modbus communication RS RTU RS 485
X1.1 / 1.2
Remote on/off unit
(close=unit on / open=unit off)
Voltage free digital input
X2.1 / 2.2
Remote summer/winter mode change input
(to activate the function see the relative para
-
graph in the MCO manual)
Voltage free digital input
X10.1 / 10.2
DHW valve control
(to activate the function see the relevant
section in the MCO manual)
Voltage output 230Vac, 50Hz, 2A (AC1)
*XPE-1.1/1.2
Alarm signalling (to activate the function see
the relevant section in the MCO manual)
Voltage output 230Vac, 50Hz, 2A (AC1)
*XPE-2.1/2.2
*Defrosting signal in progress (to activate the
function see the relevant section in the MCO
manual)
Voltage output 230Vac, 50Hz, 2A (AC1)
*XPE-3.1/3.2
*System season signal (to activate the
function see the relevant section in the MCO
manual)
Voltage output 230Vac, 50Hz, 2A (AC1)
*XPE-4.1/4.2
Double set-point / 3-way valve for radiant
panels (to activate the function see the rele
-
vant section in the MCO manual)
Voltage output 230Vac, 50Hz, 2A (AC1)
*XPE-5.1/5.2
Double set-point / 3-way valve for radiant
panels (to activate the function see the rele
-
vant section in the MCO manual)
Voltage output 230Vac, 50Hz, 2A (AC1)
*XCE 2.1 /2.2
Second set-point call (to activate the func
-
tion see the relative paragraph in the MCO
manual)
Voltage free digital input
*XCE 4.1 /4.2
Silent ventilation call (to activate the func
-
tion see the relative paragraph in the MCO
manual)
Voltage free digital input
Summary of Contents for Picco R32-140
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