Thermostat Control - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

Outline of Control (Indoor Unit)
6.3

Thermostat Control

6.3.1 Without the Optional Infrared Floor Sensor
Whether the thermostat is turned on or off is determined by the difference between the remote controller set
temperature and the actual detected room temperature (∗1).
•
Normal operation
· Cooling operation
· Heating operation
•
Dry operation
≤
· When Tro 24.5°C (76.1°F)
· When Tro > 24.5°C (76.1°F)
∗1: Field setting of the thermistor for room temperature detection is described below.
1. Factory setting
2. When set to the remote
controller thermistor
∗2: Description of symbols
∆
T = 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
55
∆T ≤ –1.0˚C (–1.8˚F)
Normal operation
(Thermostat ON)
∆T ≥ +1.0˚C (+1.8˚F)
∆T ≥ +1.0˚C (+1.8˚F)
Normal operation
(Thermostat ON)
∆T ≤ –1.0˚C (–1.8˚F)
Tr < Tro – 1.0˚C (–1.8˚F)
Dry operation
Tr > Tro + 1.0˚C (+1.8˚F)
Tr < Tro – 1.5˚C (–2.7˚F)
Dry operation
Tr > Tro + 1.5˚C (+2.7˚F)
→
Suction air thermistor in the indoor unit
→
Suction air thermistor in the indoor unit
and remote controller thermistor
Thermostat OFF
Thermostat OFF
Thermostat OFF
Thermostat OFF
SiUS331604E
Functions and Control