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D. Example of a group operation with 2 or more outdoor units and a MA remote controller.
(Address settings are necessary.)
Examples of Transmission Cable Wiring
A
B
C
E
D
M1 M2 S
TB7
IC
(51)
M1 M2 1 2S
TB5 TB15
12
TB15
12
TB15
12
TB15
12
TB15
12
TB15
12
TB15
MA
(01)
IC
M1 M2 S
TB5
(03)
IC
M1 M2 S
TB5
(02)
IC
M1 M2 S
TB5
(04)
IC
M1 M2 S
TB5
(05)
IC
M1 M2 S
TB5
(07)
IC
M1 M2 S
TB5
(06)
L2
L1
MA
MA
MA
OC
M1 M2 S
TB7
(53)
OC
1
m4
3
S
Power Supply
Unit
S
G-50A
L3
L6L7
L4
m3
AB
AB
AB
M1M2
M1M2
1
1
2 2
AB
M1M2S
TB3
M1M2S
TB3
A : Group 1
B : Group 3
C : Group 5
D : Shielded Wire
E : Sub Remote Controller
( ): Address
m
m
m
m
m
m
Wiring Method Address Settings
a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well
for all OC-OC, and IC-IC wiring intervals.
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block
(TB3) of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable block of the
indoor unit (IC).
c. Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (IC) that has the most
recent address within the same group to the terminal block on the remote controller (RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor
unit (OC).
e. DO NOT change the jumper connector CN41 on MULTI controller board.
f. The earth processing of S terminal for the centralized control terminal block(TB7) is unnecessary.
Connect the terminal S on the power supply unit with the earth.
g. Set the address setting switch as follows.
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical
power has been turned on.
Unit
IC (Main)
IC (Sub)
Outdoor Unit
Main Remote Controller
Sub Remote Controller
MA Remote Controller
Range
01 to 50
01 to 50
51 to 100
101 to 150
151 to 200
—
Setting Method
Use the smallest address within the same group of indoor units.
Use an address, other than the IC (Main) in the same group of indoor units.
This must be in sequence with the IC (Main).
Use the smallest address of all the indoor units plus 50.
*The address automatically becomes “100” if it is set as “01 - 50”.
Set at an IC (Main) address within the same group plus 100.
Set at an IC (Main) address within the same group plus 150.
Unnecessary address setting (Necessary main/ sub setting)
OC376B--1.qxp 08.1.17 1:14 PM Page 30