New Safe Air Source Heat Pump Controller for Screw Compressors BX1600 is a controller for wide applications to cooling and heating units developed by Dotech's advanced heat pump control technologies. The state-of-the-art defrost control logic linked with electronic expansion valves ensures the efficiency beyond expectation. Custom parameter configuration enables the best performance in the various environments by chaning the functions and features easily on site. Proven Control Logic for Air Source Heat Pump 2-Compressor Control Efficient Defrosting Detection Reverse Cycle Defrost Reverse Phase and Phase Loss Detection (380Vac 3-Phase, 4-Wire) Bilingual Display (English and Korean) 2-Display Support Up to 99 Control Modules per Display 2-Ch RS485 Support for Diverse Compositions International Standard Communication Protocol (MODBUS RTU/ASCII SLAVE) 4-Step Access Control for Parameter Change Components 1. Control Module: BX1600L 2. Display Module(Optional): CPAD-BX1600 with cable 3. Temperature Sensor for Service (Load) - Head Type(Optional): DPR-TH1-S6D50L*3m 4. Temperature Sensor(Evaporation, Suction, and Outdoor)(Optional): DPR-TH1-ET*2m 5. Discharged Gas Temperature Sensor(Optional): DPR-TH2-P6D100L*3m 6. Power Transformer(Optional): 24069001 (240Vac to 24Vac, 30VA)