Length of transmission wiring
The super wiring system, that integrates the control wiring between indoor unit and outdoor unit and the transmission wiring to the
central controllers into one common wiring, should satisfy the following limitation.
• The longest wiring extension: Not exceeding 1,000 m
• Total wiring length: Not exceeding 2,000 m
In the above system, the longest wiring extension is 900 m between A and C, which satisfies the limit of 1,000 m. The total length is 1,100
m, that is the total of 900 m between A and C and 200 m between B and C, which also satisfies the limit of 2,000 m.
The central controller functions properly, only when both the longest extension and the total length of wiring satisfies the limitation, as
shown above.
Notes
When designing the system, be sure to check both the longest extension and the total wiring length. If it exceeds the limitation, there is
no other way but to split into several syste
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