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121-EN
122-EN
Group control
Simultaneous twin system
A combination with an outdoor unit allows
simultaneous ON / OFF operation of the indoor units.
The following system patterns are available.
- Two indoor units for the twin system
▼
Twin system
• For wiring procedure and wiring method, follow to the
“Electrical connection” in this manual.
• When the power supply has been turned on, the
automatic address setup starts and which indicates
that address is being set up flashes on the display
part.
During setup of automatic address, the remote
controller operation is not accepted.
Required time up to the finish of automatic
addressing is approx. 5 minutes.
Indoor unit data
CODE No.
Data name
01
Room temperature (remote controller)
02
Indoor unit intake air temperature (TA)
03
Indoor unit heat exchanger (coil)
temperature (TCJ)
04
Indoor unit heat exchanger (coil)
temperature (TC)
F3
Indoor unit fan cumulative operating hours
(×1 h)
F8
Indoor unit discharge air temperature
Outdoor unit data
CODE No.
Data name
60
Outdoor unit heat exchanger (coil)
temperature (TE)
61
Outside air temperature (TO)
62
Compressor discharge temperature (TD)
63
Compressor suction temperature (TS)
65
Heatsink temperature (THS)
6A
Operating current (×1/10)
6D
Outdoor heat exchange (coil)
temperature (TL)
F1
Compressor cumulative operating hours
(×100 h)
Outdoor unit
Finish of address setup by power-ON
Remote
controller
Indoor unit
Indoor unit
Group control for system of multiple units
One remote controller can control maximum 8 indoor units as a group.
▼
Group control in single system
• For wiring procedure and wiring method of the individual line (Identical refrigerant line) system, follow to
“Electrical connection”.
• Wiring between lines is performed in the following procedure.
Connect the terminal block (A/B) of the indoor unit connected with a remote controller to the terminal blocks (A/
B) of the indoor units of other indoor units by wiring the inter-unit wire of the remote controller.
• When the power supply has been turned on, the automatic address setup starts and which indicates that address
is being set up flashes on the display part in about 3 minutes. During setup of automatic address, the remote
controller operation is not accepted.
Required time up to the finish of automatic addressing is approx. 5 minutes.
NOTE
In some cases, it is necessary to change the address manually after setup of the automatic address according to the
system configuration of the group control.
• The follow mentioned system configuration is a case when complex systems in which systems of the simultaneous
twin unit is controlled as a group by a remote controller.
(Example) Group control for complex system
The above address is set by the automatic addressing when the power is turned on. However, line
addresses and indoor addresses are set randomly. For this reason, change the setting to match line
addresses with indoor addresses.
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Remote controller
Finish of address setup by power-ON
(Max. 8 units)
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Line system
Indoor No.
After setup of
automatic
address
(Example of random
setup)
After setup
change of
manual address
(Example of address setup change)
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Line address
Group address
Indoor address
Address: 1-1-1
Address: 2-1-2
Address: 2-2-2
Address: 1-1-2
Address: 2-1-2
Address: 3-3-1
Procedure
example 1
<Single system> <Twin system>
