Hitachi P-N23NA2 - Electrical Connection of RPI Units

4 Electrical and control settings
Unit electrical wiring and connection
SMGB0099 rev.0 - 12/2016
141
4
Follow the steps below to connect the earth wire to the earth connection in the electrical box:
1 Where necessary, loosen the screw on the earthing connection in the electrical box.
2 Connect the shielded part of the power supply earth wire and the signal wiring earth wire to the earth connection.
3 Tighten the screw on the earthing connection in the electrical box.
4 Check that the shielded part of the earthing cables are correctly secured.
Nº Part
1 Electrical box
2 Tie
3 Die-cut wiring hole
4 Grille
5 Remote control wiring (optional)
6 Communication wiring
7 Power wiring
Remote control
(PC-ARFPE)
Power supply wires
(single phase)
Transmission
wires
Earth screw
Cord clamps
Knockout hole
for wirings
Grille
Electrical box
Test runs
! CAUTION
• Be careful during the test runs, as some of the safety functions remain disabled: the units operate for two hours without switching off
via the thermostat. The three-minute compressor protection is not enabled during the test.
• Secure the rubber bushes to the panel using adhesive when the outdoor unit ducts are not used.
• The compressor remains at a standstill during forced stoppage.
4.1.8 Electrical connection of RPI units
Work prior to the electrical connection
1 Turn off the power supply switches before starting work and t the appropriate locks and safety warnings.
2 Wait 5 minutes after turning off the power supply switches.
3 Check that the fans on the indoor and outdoor units are at a standstill before starting work.
? NOTE
• The electrical power for the unit must involve a specic power line, with an exclusive power control switch and residual current breaker,
installed in line with local or national safety regulations.
• Check that the electrical power line has enough capacity to supply the unit. Its length, the cable diameter and their protection (sleeve
or jacket) must be appropriate for the unit.
• For further information, always consider the current regulations in the country where the unit is to be installed.
! CAUTION
• Risk of re: cables must never touch the refrigerant pipes, printed circuit boards (PCB), sharp edges or electrical components inside
the unit to avoid damaging them.
• Loose connection terminals may lead to cable and terminal overheating. The unit may operate incorrectly, leading to a risk of re.
Check that the cables are rmly secured to the connection terminals.