Patent ID: 8136364

Claim:
A refrigerant system comprising: a compressor, said compressor compressing refrigerant and delivering it downstream to a first heat exchanger, refrigerant passing from said first heat exchanger through a first expansion device positioned downstream of the first heat exchanger, through a second heat exchanger positioned downstream of said first expansion device, and from said second heat exchanger back to said compressor; and a bypass line for selectively bypassing at least a portion of refrigerant around said first expansion device, said bypass line including an auxiliary expansion device to provide expansion of the refrigerant flowing through said bypass line, and an isolation member on said bypass line for selectively blocking flow of refrigerant to the auxiliary expansion device on said bypass line, said isolation member allowing selective flow of refrigerant through said bypass line from a point upstream of said first expansion device, and then back into a refrigerant flow line upstream of the connection to said second heat exchanger such that said bypass line and said first expansion device both deliver refrigerant to said second heat exchanger.