Miniplex

The condensing unit is equipped with an SCI BLDC scroll compressor ADB66FAAMTS for R404A refrigerant. This compressor has a wide speed range, from 20rps to 120rps. Capacity modulation means system request can be precisely met, avoiding energy waste and frequent ON-OFF cycles.

The compressor is driven by the CAREL DC power+ inverter and pRack Hecu controller. The CAREL inverter and controller use advanced features to manage the compressor envelope and ensure safe operation. The controller is also connected to the MPXPRO controller installed on each refrigerated cabinet, in order to implement the floating suction function and optimise the set point in order to save energy.

Two CAREL EEV electronic expansion valves are installed, for calibrated injection of oil and liquid in the suction line. These features are managed directly by Hecu, and increase reliability of the overall system, ensuring the best energy performance in all operating conditions. pRack Hecu calculates the opening of the valve in real time, so as to calibrate oil flow based on compressor speed, and liquid flow based on discharge temperature.