Control Specification SiENBE12-620104 Function and Control3.15 Additional Function3.15.1 Connection Pipe Condensation Preventing FunctionThis control is intended to adjust the electronic expansion valve opening so that the outdoor unitgas pipe temperature (GDN) be kept below 8°C.3.15.2 Priority Room SettingElectronic expansion valves are controlled to provide the unit designated as the priority roomwith the capacity of other room units.(Distribution of capacity: Priority room unit --- ΔD Max., other room units --- ΔD -α) Setting methodTurn off the circuit breaker before changing the setting.Only one room can be set as the priority room. Control start conditionsPriority room setting is made.AND“Powerful” signal from the priority room unit is received.Note: The operation mode of the priority room unit has precedence. Cancellation of controlThe control function is canceled when the “Powerful” operation mode is switched off or 20minutes elapse after “Powerful Operation” started.3.15.3 POWERFUL Operation ModeCompressor operating frequency is increased to PI Max. (Max. Hz of operating room unit ΣS)and outdoor unit airflow rate is increased.CroomBroomAroomLivingroomCroomBroomAroomLivingroom(R1396)When Inverterpowerful-operationis selected in thepriority roomNormaloperationThe prioritised room will be heated/cooled much more quickly
