Mitsubishi Electric City Multi PQHY-P72 Service Handbook page 36

1) Indoor/outdoor (heat source) transmission line
Same as [4] 1.
[Shielded cable connection]
Same as [4] 1.
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Same as [4] 1.
[When 2 remote controllers are connected to the system]
Same as [4] 1.
[Group operation of indoor units]
Same as [4] 1.
4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal block (TB5) on the indoor unit (IC) to the appropriate terminals on the
terminal block (TB5) on LOSSNAY (LC). (Non-polarized 2-core cable)
Interlock setting between the indoor units and LOSSNAY units must be entered on the remote controller. (Refer to
"Entering the Interlock Settings into the MA Remote Controller" or the installation manual for the MA remote control-
ler for the setting method.)
5) Switch setting
Address setting is required as follows.
Wiring method
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[ II Restrictions ]