24
PE
PE
1
9 3
4
5
2
7
8
PE
PE
2
5
4
3
6
1
8
7
I ON
O
OFF
PE
L1
L2
L3
N
The connections of the power supply cables to the disconnecting switch should be done in order from left to right as following:
protective earth (PE), phase conductor 1 (L1), phase conductor 2 (L2), phase conductor 3 (L3), neutral conductor (N).
7.7.3
User’s terminal block
L1F1
L1F1
L2F1
L2F1
L3F1
L3F1
N-1
N-2
N-1
N-2
PE-1
PE-1
L3-1
L3-2
L3-1
L3-2
HPS
HPS
12AC1
12N1
12AC1
12N1
DO1
DO3
DO5
DO4
DO6
DO7
DO2
DO7N
DO6N
DO5N
DO4N
DO3N
DO2N
DO1N
DO7N
DO6N
DO5N
DO4N
DO3N
DO2N
DO1N
DO1
DO3
DO5
DO4
DO6
DO7
DO2
AO1
AO2
A02
AO1
AO2
AO1
AO1
AO2
AI1
AI2
AI2
AI1
AI2
AI1
AI1
AI2
ST1
ST2
ST4
ST4
ST2
ST4
ST3
ST4
ST1
ST1
ST1
ST2
ST2
ST3
ST3
ST3
ST5
ST5
ST5
ST5
ST6
ST7
ST8
ST8
ST7
ST6
ST8
ST7
ST6
ST6
ST7
ST8
ID1
ID3
ID3
ID3
ID2
ID3
ID2
ID2
ID1
ID1
ID1
ID2
GNDR
GNDR
R+
R-
R-
R+
TERMINAL
TYPE
CONNECTION
12N1
Power supply 12 Vac
POWER SUPPLY FOR REMOTE KEYBOARD
12AC1
Power supply 12 Vac
POWER SUPPLY FOR REMOTE KEYBOARD
ID2
Digital input
Summer/Winter mode changeover
ID3
Digital input
Remote switch on/off input (if closed=unit is ON / if open = unit is off)
ST6
NTC sensor -10k
Ώ
at 25°C
β
3435
(1)
Domestic hot water temperature sensor (if enabled)
ST7
NTC sensor -10k
Ώ
at 25°C
β
3435
(1)
Plant water temperature sensor (if enabled)
ST8
Digital input
(1)(2)
Ambient thermostat
DO5(phase)
DO5N(neutral)
Under-voltage output 230Vac,
50Hz, 5A resistive, 1A inductive
(1)
Domestic (sanitary) hot water valve
DO6(phase)
DO6N(neutral)
Under-voltage output 230Vac,
50Hz, 5A resistive, 1A inductive
(1)(2)
Secondary circulator
GNDR
Serial communication
Modbus ground reference connection terminal for remote supervision
R+
Serial communication
signal connection terminal for supervision
R-
Serial communication
Modbus - signal connection terminal for supervision
N-3 / N-4
230Vac (Neutral)
L3-3
230Vac (Phase)
PEA
Grounding reference
(1) Enablement from maintainer level
(2) It is not activable for i-HP 260/270 models. For the other models, it is not activable if are equipped with CI2 accessory.
The management of the relaunching circulator requires the optional “GI” module.
7.7.4
PM Module phase protection
The PM module detects the correct sequence of the 3-phases (L1, L2, and L3) power supply. The 3-phases power supply must be
connected respecting the correct sequence of the phases so as to ensure the right direction of rotation at the compressor start-up
and during operation. When the PM module acts for lack of phase, the controller will receive a signal to interrupt it from the
power supply.
7.7.5
Plant management optional module terminal block
Where the plant management kit (optional) is present, a third controller is located inside the electric panel, which acts as I/O
resource expansion module. With this controller, it is therefore possible to increase the number of logics handled by the main
controller; in particular these logics are used to manage the plant system and are reported below. The functions described below
can be activated by the on-board unit controller that is located on the unit’s (i-HP) front panel.
For the configuration of the functionalities, please check the control manual supplied with the unit.
