Accorroni HPE 35, Technical Information

Page: 24 / 40

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.