The outdoor unit shall supply power to indoor unit via 14 AWG X 3 power wire • High-voltage terminal block temperature sensor to disable unit in the event of power connection overheating • Auto-restart after power loss • Soft-start compressor minimizing current inrush • All heat exchangers shall be mechanically bonded aluminum fin to copper tube • The condensing unit heat exchanger salt spray test method: ISO-9227 - the heat exchanger showed no unusual rust or corrosion development to 3,000 hours