Daikin RTSQ20PY1 Service Manual page 129

SiBE31-801_C
Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower
near the floor where the occupants are. When controlling by suction air thermistor in indoor unit
only, the unit may therefore be turned off by the thermostat before the lower part of the room
reaches the set temperature. The temperature can be controlled so the lower part of the room
where the occupants are does not become cold by widening the range in which room
temperature thermistor in remote controller can be used so that suction air temperature is
higher than the set temperature.
°C
32
Set temperature (Ts)
30
28
26
24
22
20
18
16
12
Range in which room temperature
thermistor in remote controller can
be used
(This example also assumes there are several other air conditioners, the VRV system is off, and
that temperature changes even when the thermostat sensor is off.)
Suction air thermistor in indoor unit is used for temperatures from 18°C to 25°C (A
Room temperature thermistor in remote controller is used for temperatures from 25°C to 28°C
(C
And, assuming suction temperature has changed from 28°C to 18°C (D
Room temperature thermistor in remote controller is used for temperatures from 28°C to 23°C
(D
Suction air thermistor in indoor unit is used for temperatures from 23°C to 18°C (B
Function
A
TH1 = Ts + 1 ≤ 31°C
14 16 18 20
Ex: When heating Assuming the set temperature in the figure above is 24°C, and the
suction air temperature has changed from 18°C to 28°C (A
→
D).
→
B).
TH1 = Ts – 1
B C D
22 24 26 28
Range in which suction
air thermistor in indoor
unit can be used
Outline of Control (Indoor Unit)
TH1 = Ts + 12 ≤ 33°C
TH1 = Ts + 10 ≤ 31°C
30 32 34
Suction air temperature (TH1)
Differential
→
D):
→
C).
→
A):
→
A).
°C
118