Mitsubishi Electric HP120TNU-A Service Handbook page 58

[2-9 Example System with an MA and an ME Remote Controller ]
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Same as 2-7-3
2) Transmission line for centralized control
Same as 2-7-4
3) MA remote controller wiring
Same as 2-7-1
4) ME remote controller wiring
Same as 2-8-1
5) Maximum line distance via outdoor unit
2
(1.25 mm [AWG16] or larger)
Same as 2-7-4
(4) Wiring method
1) Indoor/outdoor transmission line
Same as 2-7-2
HWE18220_GB
Shielded cable connection
Same as 2-7-2
2) Transmission line for centralized control
Same as 2-7-4
Shielded cable connection
Same as 2-7-4
3) MA remote controller wiring
(When 2 remote controllers are connected to the system,
Group operation of indoor units)
Same as 2-7-1
4) ME remote controller wiring
(When 2 remote controllers are connected to the system,
Group operation of indoor units)
Same as 2-8-1
5) LOSSNAY connection
Same as 2-7-4
6) Switch setting
Address setting is required as follows.
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