Mitsubishi Electric PQRY-P200YEM-A Service Handbook page 40

2 Branch number switch (Indoor Units and Fresh Master)
Match the indoor unit's refrigerant pipe with the BC controller's end connection number.
When combining branches, choose the smallest connection number in the series.
The indoor unit capacity limit for connecting to a branch is 80. Max. 3sets for 1 connection.
When selecting connection number 16, choose 0 as the setting for the branch number switch.
Connecting one unit to one branch
Combining branches
BC controller
1 2 3 4 5
1
3
Above 80
3 In the case of group operations of indoor units of different refrigerant system
(Including the case of connecting with higher rank controller such as remote controller for centralized controller).
Group setting shall be done with remote controller. ( When the centralized remote controller is connected, the
setting should be done with the centralized remote controller.) Address setting can be done on each unit freely.
Regarding transmission wiring, provide 2-wire jumper system (Centralized system transmission line) to outdoor
units to be connected to indoor unit in the same group, and mount short circuit connector on CN41 to CN40 for
replacement for one of the outdoor units. (However, when the higher rank controller like that for centralized
controller is connected, do not replace the short circuit connector to CN40.)
BC controller
1 2 3
1 2 3
6
4 5 6
4 5 6
4 5 6
Connecting more than one unit to one branch
BC controller
1 2 3 4 5
1 1 2
Below 80
–39–
6
3 4 5 6