A system for starting a refrigeration system after installation comprising: one or more evaporators; an accumulator configured to receive vapor refrigerant from the one or more evaporators; a compressor assembly comprising one or more compressors configured to compress vapor refrigerant received from the accumulator; a condenser assembly comprising one or more heat exchangers configured to condense vapor refrigerant received from the compressor assembly; a receiver tank configured to collect condensed refrigerant received from the condenser assembly; a liquid line fluidly coupling the compressor assembly, the condenser assembly, the receiver tank and the one or more evaporators, the liquid line comprising: a liquid line regulating valve situated between the receiver tank and the one or more evaporators and configured to regulate one or more properties of refrigerant supplied to the one or more evaporators; and a liquid line charging valve configured to permit refrigerant to accumulate in the receiver tank; a suction line fluidly coupling the one or more evaporators, the accumulator, and the compressor assembly, the suction line comprising: a suction line expansion valve configured to vaporize refrigerant provided to the compressor assembly; and a suction line charging valve configured to regulate a flow of refrigerant used to charge the suction line; and a controller configured to: override normal operation of the refrigeration system; transmit a demand signal to the refrigeration system to enable partial system operation; operate the liquid line regulating valve and the liquid line charging valve, in response to the demand signal, to charge the receiver tank; gradually increase the demand signal to a predetermined level of partial system operation; release the liquid line charging valve to normal operation; operate the suction line expansion valve and the suction line charging valve, in response to the demand signal, to charge the suction line; gradually increase the demand signal to full system operation; and release the liquid line regulating valve, the suction line expansion valve, and the suction line charging valve to normal operation. one or more evaporators; an accumulator configured to receive vapor refrigerant from the one or more evaporators; a compressor assembly comprising one or more compressors configured to compress vapor refrigerant received from the accumulator; a condenser assembly comprising one or more heat exchangers configured to condense vapor refrigerant received from the compressor assembly; a receiver tank configured to collect condensed refrigerant received from the condenser assembly; a liquid line fluidly coupling the compressor assembly, the condenser assembly, the receiver tank and the one or more evaporators, the liquid line comprising: a liquid line regulating valve situated between the receiver tank and the one or more evaporators and configured to regulate one or more properties of refrigerant supplied to the one or more evaporators; and a liquid line charging valve configured to permit refrigerant to accumulate in the receiver tank; a liquid line regulating valve situated between the receiver tank and the one or more evaporators and configured to regulate one or more properties of refrigerant supplied to the one or more evaporators; and a liquid line charging valve configured to permit refrigerant to accumulate in the receiver tank; a suction line fluidly coupling the one or more evaporators, the accumulator, and the compressor assembly, the suction line comprising: a suction line expansion valve configured to vaporize refrigerant provided to the compressor assembly; and a suction line charging valve configured to regulate a flow of refrigerant used to charge the suction line; and a suction line expansion valve configured to vaporize refrigerant provided to the compressor assembly; and a suction line charging valve configured to regulate a flow of refrigerant used to charge the suction line; and a controller configured to: override normal operation of the refrigeration system; transmit a demand signal to the refrigeration system to enable partial system operation; operate the liquid line regulating valve and the liquid line charging valve, in response to the demand signal, to charge the receiver tank; gradually increase the demand signal to a predetermined level of partial system operation; release the liquid line charging valve to normal operation; operate the suction line expansion valve and the suction line charging valve, in response to the demand signal, to charge the suction line; gradually increase the demand signal to full system operation; and release the liquid line regulating valve, the suction line expansion valve, and the suction line charging valve to normal operation. override normal operation of the refrigeration system; transmit a demand signal to the refrigeration system to enable partial system operation; operate the liquid line regulating valve and the liquid line charging valve, in response to the demand signal, to charge the receiver tank; gradually increase the demand signal to a predetermined level of partial system operation; release the liquid line charging valve to normal operation; operate the suction line expansion valve and the suction line charging valve, in response to the demand signal, to charge the suction line; gradually increase the demand signal to full system operation; and release the liquid line regulating valve, the suction line expansion valve, and the suction line charging valve to normal operation.