Description Of Optional Output Signals - Hitachi RCI-1.0FSN3 Service Manual

6 Optional functions
Control by use of a remote temperature sensor
On-screen display: 08.
The following functions are available when an optional remote
temperature sensor is used:
• The unit is controlled by the average temperature of the air
inlet thermistor and the remote temperature sensor.
• When the discharge air temperature exceeds 60 °C, the fan
speed increases from medium to high or from low to medium.
N O T E
The remote control thermistor cannot be used if a remote temperature sensor is used.
•
• The heating temperature calibration function is automatically cancelled in heating operation.
• If a remote temperature sensor is used, it must be positioned according to the following requirements:
It must be in a position where the average room temperature can be detected and where the outdoor air
-
generated when doors are opened and closed does not affect the room temperature.
It must be in a position where the thermistor is not directly exposed to sunlight or where there are no heat
-
sources nearby.

6.1.5 Description of optional output signals

Picking up of the operation signal
On-screen display: 01.
This optional signal is used to pick up the operation signal. Thanks to this function, the operation signal can be checked
from a remote location and the outdoor air intake fan operation can be locked.
Connect the wiring and use the materials as indicated in Available ports.
N O T E
The auxiliary relay contact X2 closes when an operation signal is transmitted.
Alarm signal
On-screen display: 02.
This optional signal is used to pick up the activation of safety devices. The signal is normally displayed on the remote
control. This function is not available under abnormal transmission conditions.
Connect the wiring and use the materials as indicated in Available ports.
N O T E
The auxiliary relay contact X2 closes when an operation signal is transmitted.
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