31
OCH675E
B. Example of a group operation system with 2 or more outdoor units and an M-NET remote controller.
(Address settings are necessary.)
Examples of
Transmission
Cable
Wiring
A
TB7
TB3
M-IC
(51)
TB5
M-NET RC
(01)
M-IC
TB5
(03)
M-IC
TB5
(02)
M-IC
TB5
(04)
M-IC
TB5
(05)
TB5
(07)
TB5
(06)
L
2
L
1
(101)
(105)
(104)
(155)
OC
TB7
(53)
OC
Power Supply
Unit
System
controller
L
3
L
5
L
6
L
4
2
1
A
: Group
B
: Group
C
: Group
D
: Shielded Wire
E
: Sub M-NET Remote Controller
( ): Address example
r
r
M1 M2 S M1 M2 S
M1 M2 S
M1 M2 S
A B
A B
A B
M1 M2 S
M1 M2 S
M1 M2 S
S
M1 M2 S
TB3
M1 M2 S
M1 M2 S
A B
M1 M2
M1 M2 S
M1 M2 S
NO
M-IC
M-NET RC
M-NET RC M-NET RC
M-IC
3
r
E
C
B
Wiring Method
Address Settings
a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (M-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 (M-IC).
c.
Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (M-IC) that has the most
recent address within the same group to the terminal block on the M-NET remote controller (M-NET RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for centralized control (TB7) for the outdoor
unit (OC).
e. DO NOT change the jumper connector CN41 on MULTI controller circuit board.
f. The earth processing of S terminal for the centralized control terminal block (TB7) is unnecessary. Connect the termi
-
nal S on the power supply unit with the earth.
g. Set the address setting switch as follows.
Unit
Range
Setting Method
M-IC (Main)
01 to 50
Use the smallest address within the same group of indoor units.
M-IC (Sub)
01 to 50
Use an address, other than the M-IC (Main) in the same group of indoor
units.
This must be in sequence with the M-IC (Main).
OC
51 to 100
Use the smallest address of all the indoor units plus 50.
The address automatically becomes “100” if it is set as “01–50”.
Main M-NET remote controller
101 to 150
Set at an M-IC (Main) address within the same group plus 100.
Sub M-NET remote controller
151 to 200
Set at an M-IC (Main) address within the same group plus 150.
MA M-NET remote controller
—
Address setting is not necessary. (Main/ sub setting is necessary.)
h. The group setting operations among the multiple indoor units is done by the M-NET remote controller (M-NET RC)
after the electrical power has been turned on.
