Hitachi RPI-8/10FSN3E - Electrical Connection of KPI Units

4 Electrical wiring
150
SMGB0077 rev.0 - 01/2013
Test runs
C A U T I O N
• 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.
4.1.10 Electrical connection of KPI 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.
N O T E
• 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.
C A U T I O N
• Riskofre:cablesmustnevertouchtherefrigerantpipes,printedcircuitboards(PCB),sharpedgesorelec-
trical 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.
Electrical connection
Cut the centre of the rubber bushing in the wiring connection
knockout hole.
Follow the steps below to connect the remote control cable or the
optional extension wire:
1 Pass the cable through the knockout hole in the cabinet.
2 Connect the cable to the terminals on the printed circuit board
(PCB) located inside the electrical box.
3 Tighten the screw on terminals A and B in the electrical box.
4 Check that the cables are correctly secured.
Nº Part
1 Remote Control
2 Transmission Wires
3 Power supply wires (Single phase)
4 Earth Screw
1
4
3
2