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Mitsubishi Electric PFAV-P250VM-E Service Manual page 39

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[ II Restrictions ]
3. Group operation of the indoor units connected to different outdoor units
(1) Sample control cable wiring configuration
(2) Cautions
1) Assign sequential addresses to the indoor unit.
2) Do not connect the terminal blocks (TB5) of the indoor
units that are connected to different outdoor units with
each other.
3) No more than two MA remote controllers can be connect-
ed to a group of indoor units. To connect three or more
indoor units to the system, use two or less MA remote
controllers.
When a relay connector for MA remote controller cable is
removed from the indoor unit, the unit can be in the same
state as when MA remote controller is removed from the
unit.
HWE10190
Leave the power jumper
as it is on CN41.
OC
51
TB3
TB7
M1 M2
M1 M2
Leave the power jumper
as it is on CN41.
OC
52
TB3
TB7
M1 M2
S
M1 M2
L1
Group
IC
01
TB15
TB5
M1 M2
A B
MA (main body)
Main
L2
IC
02
TB5
TB15
M1M2
S
1 2
A B
MA (main body)
Sub
(3) Maximum allowable length
1) Indoor-outdoor transmission cable
Same as section [5] 1.
2) Transmission cable for the centralized control system
Same as section [5] 1.
3) MA remote controller wiring
Total cable length (0.3 to 1.25mm
m1+m2+m3 ≤ 200m [656ft]
- 30 -
2
[AWG22 to 16])
GB
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