SiUS331604E Outline of Control (Indoor Unit)Functions and Control 566.3.2 With the Optional Infrared Floor SensorWhether the thermostat is turned on or off is determined by the difference between the remote controller settemperature and the detected temperature around people.• Normal operation· Cooling operation· Heating operation• Dry operation· When Tro ≤ 24.5°C (76.1°F)· When Tro > 24.5°C (76.1°F)∗: Description of symbols∆T = Detected room temperature – Remote controller set temperatureTro = Detected room temperature at the start of dry operationTr = Determined by the room temperature detected by the thermistorControl range of temperature around peopleWhen the floor temperature is very low, operation using the temperature around people may cause the suctionair temperature to operate outside of use range.To avoid the above condition, a limit based on the suction air temperature is set for the use range of thetemperature around people.• Heating operation· When the floor temperature is higher than suction air temperature (R1T), R1T will be treated as the controltarget temperature in operation.· When the temperature around people is 33°C (91.4°F) or higher, R1T will be treated as the controltemperature for operation.• Cooling operation· When the floor temperature is lower than suction air temperature (R1T), R1T will be treated as the controltarget temperature for operation.· When the temperature around people is 15°C (59°F) or lower, R1T will be treated as the control temperaturefor operation.Thermostat OFFNormal operation(Thermostat ON)∆T ≤ –1.0˚C (–1.8˚F)∆T ≥ +1.0˚C (+1.8˚F)Thermostat OFFNormal operation(Thermostat ON)∆T ≥ +1.0˚C (+1.8˚F)∆T ≤ –1.0˚C (–1.8˚F)Thermostat OFFDry operationTr < Tro – 1.0˚C (– 1.8˚F)Tr > Tro + 1.0˚C (+ 1.8˚F)Thermostat OFFDry operationTr < Tro – 1.5˚C (– 2.7˚F)Tr > Tro + 0.5˚C (+ 0.9˚F)
