What is the maximum allowable transmission line distance between the outdoor unit and the farthest indoor unit?

The maximum transmission line distance between the outdoor unit and the farthest indoor unit is 200 m (656 ft). For centralized control and indoor/outdoor transmission lines (maximum line distance via outdoor unit), the maximum is 500 m (1,640 ft). Use 2-core shielded cables of at least 1.25 mm² (AWG16) for M-NET transmission lines. (Page 20)

From the official Mitsubishi PURY-HP72 Heat Pump manual, page 20

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