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Wiring method
•
Address setting method
a. Indoor/outdoor transmission line
Apply jumper wiring connection between M1, M2 terminals of the indoor/outdoor transmission line terminal block
(TB3) on the outdoor unit (OC) and that of indoor/outdoor transmission line terminal block (TB5) on each indoor
unit (IC). (with non-polarity two wires)
❉
Make sure to use shielded wire.
Connection of shielded wire:
For the grounding of shielded wire, apply jumper wiring between the grounding screw of OC, S-terminal of the
terminal block (TB3), and S-terminal of the system controller.
b. Centralized control transmission line
Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on
each OC. On one OC only, replace the power selecting connector (CN41) with (CN40). Set the centralized control
switch (SW2-1) on the main board of all outdoor units to “ON.”
❉
Make sure to use shielded wire.
Connection of shielded wire:
Apply jumper wiring to connect the shielded earth to S-terminal of the terminal block (TB7) on each OC. Connect S-
terminal of the terminal block (TB7) on one OC with (CN40) connected to the earth screw ( ) of the electrical
parts box.
c. MA remote controller wiring
The same as 1. (1)
For 2-remote controller operation:
The same as 1. (1)
For indoor unit group operation:
The same as 1. (2)
d. LOSSNAY connection
Apply jumper wiring to connect A, B terminals of the terminal block (TB5) on (IC) to the terminal block (TB5) on the
indoor/outdoor transmission line terminal block (TB5) on Lossnay (LC). (with non-polarity two wires)
❉
The interlocking registration of the indoor unit and Lossnay is required from the system controller. (For the
registration method, see the instruction manual of system controller.)
To connect ON/OFF remote controller only, interlocking registration from the remote controller is required.
e. Switch setting
Address setting is required as follows.
1
Indoor unit
2
LOSSNAY
3
MA remote
controller
4
Outdoor unit
Main unit
Sub unit
Main unit
Sub unit
IC
OC
LC
MA
MA
01 ~ 50
01 ~ 50
Not required
Sub unit
• Set the address not to be
overlapped with the indoor
unit address.
• Conduct initial setting by the
system controller with the
same setting detail of indoor
unit applied in MA remote
controller wiring.
• When setting address to
“100,” make it “50.”
Order
Unit or controller
Address
Setting method
Caution
Factory
setting range
setting
• Set the lowest address within
a same group to the indoor unit
desired to be the main unit.
Set to the main unit address
within a same group in serial or-
der. [Main unit +1, +2, +3,]
Set any address after setting all
indoor units.
–
Set by the main/sub selector
switch
.
The lowest address of indoor
unit within refrigerant system
+ 50
00
00
Main
51 ~ 100
Hex. unit
5
Sub unit
OS
Oundoor unit a 1
00
