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Separation rules
• The transmission cable between indoor units, outdoor unit, and controllers can be connected by
one cable.
• Terminal board available on the market or the ones inside the indoor unit or outdoor unit should be
used for transmission cable separation.
• Connection of 3 or more lines may cause poor communication for one terminal. In this case, use a
terminal box.
NOTE:
Do not loop.
• Example 1: Connecting each outdoor unit and indoor unit with one wiring
Refrigerant
system 1
Signal amplifier
Refrigerant
system 2
Refrigerant
system 3
• Example 2: Separating transmission cable
Separate on
the terminal for
transmission cable
Separate using
terminal board
System controller
Refrigerant
system 1
Refrigerant
system 2
Refrigerant
system 3
4-3. Transmission cable - (06-61) - 4. Wiring design
SYSTEM
DESIGN
SYSTEM
DESIGN
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