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Electrical Connections
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Wiring regulations on wire diameters differ from country to country. Please refer to your LOCAL
ELECTRICAL CODES for field wiring rules. Be sure that installations comply with the rules and regulations.
General Precautions
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Ensure that the rated voltage of the unit corresponds to the name plate before carrying out proper wiring
according to the wiring diagram.
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Provide a power outlet to be used exclusively for each unit. A power supply disconnects and a circuit
breaker for over-current protection should be provided in the exclusive line.
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The unit must be
GROUNDED
to prevent possible hazards due to insulation failures.
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All wiring must be firmly connected.
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All wiring must not touch the hot refrigerant piping, compressor or any moving parts of fan motors.
Vacuuming And Charging
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The pre-charged outdoor unit does not need any vacuuming or charging. However once it is connected,
the connecting pipe line and the indoor unit need to be vacuumed before releasing the R22 from the
outdoor unit.
1. Open the service port core cap.
2. Connect pressure gauge to the service port.
3. Connect the line to vacuum pump. Open the charging manifold valve and turn the pump on. Vacuum
to -0.1 MPa (-760mmHg) or lower. (Evacuation time varies by the pump but averagely in 1 hour).
4) After evacuation, unscrew the spindle (diagram B) for the gas to run to indoor unit.
