SiUS28-902_a Other Control
Function 36
5.4 Operation Range of Remote Controller Temperature
Sensor
Room temperature is controlled by the remote controller temperature sensor and return-air
temperature sensor (unit-mounted temperature sensor) on the indoor unit. When the remote
controller temperature sensor is set to Not Used in a field setting, the unit can be controlled only by
unit mounted temperature sensor (or remote sensor).
Note:
Cooling When between the room temperature and the setpoint temperature, fine adjustment control
can be achieved using the unit-mounted temperature sensor.
.If the return-air temperature is close
to the set-point temperature, the sensor mounted in the remote controller in the occupied space is
used.
Ex: When cooling
(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.)
Unit-mounted temperature sensor is used for temperatures from 64°F to 73°F (A → C).
Remote controller thermostat sensor is used for temperatures from 73°F to 81°F (C → E).
Unit-mounted temperature sensor is used for temperatures from 81°F to 86°F (E → F).
And, assuming return-air temperature has changed from 86°F to 64°F (F → A):
Unit-mounted temperature sensor is used for temperatures from 86°F to 77°F (F → D).
Remote controller thermostat sensor is used for temperatures from 77°F to 70°F (D → B).
Unit-mounted temperature sensor is used for temperatures from 70°F to 64°F (B → A).
NOTE: When outdoor air (OA) and indoor return air are mixed, the room temperature may differ from the
set-point temperature because the air temperature is out of the area of operation range of the remote con-
troller temperature sensor. In this event, install the remote sensor (KRCS01-1) in the room where there is
no influence of outdoor air.
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