Outline Of Control (Indoor Unit); Set Temperature And Control Target Temperature; Thermostat Control - Daikin VRV X RXQ6-48ANR Series Service Manual

SiME341909EA

8. Outline of Control (Indoor Unit)

8.1

Set Temperature and Control Target Temperature

The relationship between remote controller set temperature and control target temperature is
described below.
Examples are given to illustrate a control target temperature that satisfies the remote controller
set temperature.
Regarding control target temperature
When using the infrared floor sensor, the temperature around people will be treated as the
control target temperature for operation.
What is the temperature around people?
The temperature around people refers to the temperature of the living space, obtained from the
temperature around the ceiling and the temperature underfoot. The temperature is calculated
using the detected values of the suction air thermistor and the infrared floor sensor.
It is difficult to use only suction air temperature control for underfoot air conditioning.
8.2

Thermostat Control

8.2.1 Without Optional Infrared Presence/Floor Sensor
The thermostat ON/OFF condition is determined by the difference between the remote
controller set temperature and the actual detected room temperature (∗1).
 Normal operation
 Cooling operation
 Dry operation
 When Tro < 24.5°C
 When Tro ≥ 24.5°C
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
Note(s)
∗1: The thermistor used to detect room temperature is according to the field setting 10 (20)-2.
Part 4 Functions and Control
Temperature
Remote controller set temperature
Cooling
Control target temperature
ΔT ≤ –1.0°C
Normal operation
(Thermostat ON)
ΔT ≥ +1.0°C
Tr < Tro – 1.0°C
Dry operation
Tr > Tro + 1.0°C
Tr < Tro – 1.5°C
Dry operation
Tr > Tro + 0.5°C
Outline of Control (Indoor Unit)
Thermostat OFF
Thermostat OFF
Thermostat OFF
˚C
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