56
D. Example of a group operation with two or more outdoor units and a MA remote controller.
(Shielding wires and address settings are necessary.)
Examples of
T
ransmission Cable Wiring
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, M2 and S and the ground terminal on the transmission cable terminal block
(TB3) of each outdoor unit (OC) to terminals M1, M2 and S on the transmission cable block (TB15) 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 (MA).
d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor
unit (OC).
e. Use the grounded wire to connect the S-terminal on the transmission terminal of the outdoor unit (OC) and the
grounded terminal for the electrical components box.
f. On one outdoor unit only, change the jumper connector on the control panel from CN41 to CN40.
g. Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which
the jumper connector was inserted into CN40 in Step above to the ground terminal
;
in the electrical component box.
h. Set the address setting switch as follows.
Unit
IC (Main)
IC (Sub)
Outdoor Unit
Range
001 to 050
001 to 050
051 to 100
Setting Method
Use the most recent address within the same group of indoor units.
Use an address, other than that of the IC (Main) from among the units within
the same group of indoor units. This must be in sequence with the IC (Main).
Use the most recent address of all the indoor units plus 50.
M1 M2 S
M1 M2 S
TB7
TB3
IC
(051)
M1 M2 S 1 2
TB5 TB15
MA
(001)
IC
M1 M2 S
TB5
(002)
IC
M1 M2 S
TB5 TB15
(004)
IC
M1 M2 S
TB5
(003)
IC
M1 M2 S
TB5 TB15
(005)
IC
M1 M2 S
TB5 TB15
TB15
TB15
(007)
IC
M1 M2 S
TB5 TB15
(006)
L
1
L
8
R
1
R
4
L
9
L
2
L
3
L
4
L
5
L
6
L
7
MA
MA
MA
Sub remote
controller
CN40 CN41
CN41
OC
Between
terminal blocks
M1 M2 S
M1 M2 S
TB7
TB3
(052)
OC
R
2
R
3
Shielded wire
1 2
1 2
1 2
1 2
1 2
1 2
( ) Address
Group 3
Group 5
Group 1
OC183E--2.qxp 10.5.6 0:47 PM Page 56
