12
•
Wait for 90 seconds before getting access to the electrical panel.
•
Be sure that the grounding connection is good before carrying out any repairs.
•
Be sure that you are well insulated from the ground, with dry hands and feet, or by using insulating platforms
and gloves.
•
Check that there is no foreign material near the system.
WARNING: The remote control panel is connected to the water chiller by means of no.4 wires having a 1,5 mm
2
section. The power supply cables have to be separated from the remote control wires. The maximum distance is 50m.
WARNING: The remote control panel cannot be installed in areas with strong vibrations, corrosive gases, and excess
of dirtiness or high humidity levels. Leave free the area near the cooling openings.
6.6.1
Power supply terminal block
The power supply of the units is 3-Ph/N/PE 400V, 50Hz. The power cables should be brought inside the electrical panel of the unit
and connected to the disconnecting switch inside the electric panel itself, in the bottom at the left, as shown in the following figure:
Electrical wiring has to be done only by qualified personnel.
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).
6.6.2
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
