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9. Electrical Connection
1. Ensure proper operation of the unit, the unit must be installed and repaired by qualified technician.
2. A leakage protection switch must be installed near the unit.
3. Do not use any damaged cable and switch.
4. Do not open the electrical box without shutting off all power to the unit.
5. All the wiring must meet the local electrical safety norm and performed by qualified electricians.
6. Ensure that the heat pump water heater is well connected to the earth, do not disconnect the earth connection
of the power in any condition.
7. Provide a separate power supply which meets rated requirements for the unit.
8. When the unit connects to the electricity network, there must be a short-circuit protection.
9. Choose the suitable cable when use the power outdoor.
10. Do not control the unit on or off by the main power switch.
11. Connect the power cable of the circulator to the terminal board as shown in the circuit diagrams.
12. After finish installation, check before connect the unit to the power.
Connettori alimentazione elettrica
9.1 Specification of power
Following information is for reference, please subject to the local safety norm.
Type
Power supply
Circuit Breaker/Fuse(A)
Min. power wiring (mm2)
Ground wiring (mm2)
9.2 Trial Operation
1. The unit should only be operated by qualified technician.
2. Please drain air inside hydraulic system before operation.
3. The unit is designed according to the conditions as follows: the range of ambient temperature is -20°C~43 °C
and the range of water pressure is 0.15-0.8Mpa.
9.3 Preparation
The following items should be checked before startup:
• The heat pump should be connected completely.
• All valves that could impair the proper flow of the heating water in the heating circuit must be open.
• The air intake and air outlet paths must be cleared.
• The ventilator must turn in the direction indicated by the arrow.
• The settings of the heat pump controller must be adapted to the heating system in accordance with the con-
troller's operating instructions.
• Ensure the condensate outflow functions.
• Drain the air inside hydraulic system.
Power supply connectors
Connettori alimentazione elettrica
A-0732
A-0932
220-240V
220-240V
/1Ph/
/1Ph/
50Hz
50Hz
25
32
2.5
4.0
1.5
1.5
Interruption of
Interruzione
Interruzione
protezione
protezione
protection
Interruttore
Interruttore
A-1332
A-1332-T
220-240V
380-415V
/1Ph/
/3Ph/
50Hz
50Hz
40
32
4.0
2.5
1.5
1.5
Switch
A-1732-T
380-415V
/3Ph/
50Hz
32
2.5
1.5
87
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