Instruction of the GMV D.C. inverter
18
7 Operating Principle of Air-Conditioning Unit
7.1 Heat Pump Type Mini D.C.Inverter Multi-Connected Air-Conditioning Unit
M
Compressor
Electric expand vavle
Filter Filter
One-way Valve
Heat Exchanger
Subcooling condenser
Receiver
Outdoor
Indoor
Cut off valve
Gas-liquid separator
Capillary
Oil seperator
4 way valve
Soleniod valve
Capillary
HEATING
COOLING
Connect the system to power supply, and the indoor units and the outdoor unit shall start to
operate. When the system is in cooling operation, the low-temperature and low-pressure refrigerant
gas from the heat exchangers of the indoor units converge and is absorbed by the compressor to
be compressed into high-temperature and high-pressure gas. After that, the gas is discharged into
the heat exchanger of the outdoor unit for heat exchange with the air at the outdoor side, so the
gas is changed into refrigerant liquid. The liquid ows into all the indoor units through the Y-type
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