Refrigerant Circuit SiEBE18-52646 Refrigerant Circuit1.2 BPMKS 967 A2B, B2B, A3B, B3BNo. inrefrigerantsystemdiagramSymbol Name Major FunctionA EVU Electronic expansion valve(for operating room) Among EVA, EVB and EVC, the electronic expansion valve of operating room is calledEVU.B EVT Electronic expansion valve(for stopping room)Among EVA, EVB and EVC, the electronic expansion valve of stopping room is calledEVT.C EVH Electronic expansion valve(Bypass)While in oil return operation, used to adjust the refrigerant circulating rate of indoorunit.1 DGA~ DGC Thermistor (Gas pipe) While in cooling operation, used to carry out the indoor unit SH control and cooling gaspipe isothermal control.2 DLA~ DLC Thermistor (Liquid pipe) While in heating operation, used to carry out the indoor unit SC control.3 R1T Thermistor (Room temp.) Used to detect room air temperature and instructs the capacity supply to BP unit.4 R2T Thermistor (Heat exchanger) Used to detect heat exchanger temperature and carry out various protection functionsand controls of capacity.5 R1T Thermistor (Room temp.) Used to detect room air temperature and instructs the capacity supply to BP unit.6 R2T Thermistor(Heat exchanger 1) Used to detect heat exchanger temperature and carry out various protection functionsand controls of capacity.7 R3T Thermistor(Heat exchanger 2)Used to detect heat exchanger temperature and carry out various protection functionsand controls of capacity.FilterFilterFilterFilterFilterRA indoor unitSA indoor unitEV AEVH EV BEVC(Q0403)1234567Tooutdoorunit
