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I
Simultaneous operation system
• Connect the remote controller only to the master unit.
• The remote controller needs to be wired only to the master unit, it does not need to be connected to the
slave units through transition wiring. (Do not connect transition wiring to the slave units.)
• The indoor temperature sensor is effective only for indoor units to which the remote controller is connected.
• The length of wiring between the indoor unit and the outdoor unit varies depending on the connected
model, the number of connected units, and the maximum piping length.
For details, refer to the technical documents.
[ Group control j
Power Supply
Power Supply
Power Supply
50 Hz 2
30 V
50 Hz 2
30 V
50 Hz 2
30 V
Indoor unit
�;�up control remote con�roller
(Optional accessory)===::::::1-===
Fig. 31
Wire
Size (mm
2
)
Remote controller cord Vinyl cord with sheath or cable NOTE 3 (2 wire)
0.75 -1.25
Length
Max. 500 m *
• In this case, all the indoor units in the group will operate in accordance with the group control remote
controller.
• Select a remote controller which matches as many of the functions (airflow direction, etc.) in the group as
possible.
Outdoor
unit 2
Outdoor
unit 16
Group control remote contoller
Wiring Method
..----
(1)
Remove the control box lid.
(See "8. ELECTRIC WIRING WORK".)
Fig. 32
(2) Cross-wire the terminal block for remote controller (P1, P2) inside the control box. (There is no
polarity.) (Refer to Fig. 30 and Table 5)
21
When implementing group control
• When using as a pair unit or as a parent unit for simultaneous operation multi, you may simultaneous
start
/
stop (group) control up to 16 unit with the remote controller.
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