Daikin VRV RXYMQ-A Series Service Manual page 76

Outline of Control (Indoor Unit)
8.2.2 With Optional Infrared Presence/Floor Sensor
The thermostat ON/OFF condition is determined by the difference between the remote
controller set temperature and the detected temperature around people.
 Normal operation
 Cooling operation
 Heating operation
 Dry operation
 When Tro ≤ 24.5°C
 When Tro > 24.5°C
: Description of symbols
ΔT = Detected room temperature – Remote controller set temperature
Tro: Detected room temperature at the start of dry operation
Tr: Determined by the room temperature detected by the thermistor
Control range of temperature around people
When the floor temperature is very low, operation using the temperature around people may
cause the suction air 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 the temperature around people.
 Cooling operation
 When the floor temperature is lower than suction air thermistor detection temperature (R1T),
 When the temperature around people is 15°C or lower, R1T will be treated as the control
 Heating operation
 When the floor temperature is higher than suction air thermistor detection temperature
 When the temperature around people is 33°C or higher, R1T will be treated as the control
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Normal operation
(Thermostat ON)
Normal operation
(Thermostat ON)
Dry operation
Dry operation
R1T will be treated as the control target temperature for operation.
temperature for operation.
(R1T), R1T will be treated as the control target temperature in operation.
temperature for operation.
ΔT ≤ –1.0°C
Thermostat OFF
ΔT ≥ +1.0°C
T  1.0°C
Thermostat OFF
T  –1.0°C
Tr < Tro – 1.0°C
Thermostat OFF
Tr > Tro + 1.0°C
Tr < Tro – 1.5°C
Thermostat OFF
Tr > Tro + 0.5°C
SiME332106E
Part 4 Functions and Control