Hitachi PC-ARF Technical Catalogue page 770

9 Control accessories
PRC-(10-30)E1
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Remote Control Cable Utilization Method
Do not install the control cable parallel to the power source wires (220V to 415V)
If the control cable is required to be installed parallel to the power source wires, separate the control cable by at least 15
cm. If cannot be separated, put either the control wire or the power source in a steel pipe and connect an earth wire to the
pipe. Crossing at right angles of the control wire and power source wire is permitted.
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Utilization for connecting indoor units
When the indoor units are controlled by one remote control switch, use the remote control cable as connecting cables
between indoor units, as shown in the figure.
Terminal Board
C A U T I O N
If the remote control switch is disassembled, the following problems can occur:
• Dust can enter into the remote control switch and cause remote control switch parts malfunction.
• Static electricity may occur and the electronic parts on the printed circuit board can be damaged.
• The total length of the remote controller cable and the control cable between the indoor units shall be 500m or less.
754
TCGB0106 rev.0 - 12/2014
220~415V Cable
Over 15 cm
Remote Control Cable
Remote control
switch
90º
Terminal Board
Remote control
switch