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(Wiring procedure)

(1) Connect the remote controller to the indoor unit remote

controller wiring terminal plate (1, 2). (Remote controller
wiring)

(2) Connect the indoor units (U1, U2) and the outdoor units (1,

2). Connect the other outdoor units and indoor units (with
different refrigerant systems) in the same way. (Inter-unit
control wiring)
Connect the remote controller crossover wiring to the
indoor units (U1, U2) for each refrigerant system. (Inter-
unit control wiring)

(3) Connect the remote controller crossover wiring (2 wires)

from the remote controller wiring terminal plate (1, 2)
on the indoor unit (unit where the remote controller is
connected) to the remote controller terminal plates (1, 2)
on the other indoor units. (Remote controller crossover
wiring)

(4) Turn ON both the indoor and outdoor unit power and

perform automatic address setting from the remote
controller. (For the automatic address setting procedure,
refer to 9-8-4.)

N OT E

* Models with auxiliary heaters cannot be used for crossover

wiring of the indoor unit power wires. (Use a pull box to divide
the wiring.)
Be sure to use the indoor unit temperature sensor (body
sensor) when using this control. (Status at shipment.)

9-8-2. Setting the outdoor unit system addresses

For basic wiring diagram (Set the system address: 1)

8 – 10 HP

LED1

FUSE (0.5A, F500)

OC (CN500, BLU)

MOV2
(CN301, BLK)

MOV1
(CN300, WHT)

EMG (CN502, BRN)

SILENT (CN037, WHT)

PUMP DOWN (CN048)

TEMINAL (CN205, BLK)

R.C.ADD. Rotary switch

C2 (CN020, WHT)

C1 (CN021, WHT)

TEST (CN033, RED)

TD (CN024, BLK)

TO (CN023, BLK)

TS (CN022, RED)

63PH (CN027, WHT)

EXCT
(CN030, RED)

RC P
(CN039, RED)

IC002

CTL2
(CN202, GRN)

CTL1
(CN203, GRN)

FUSE
(6.3A, F101)

N . P . C H E C K
(CN046, RED)

LED2

MODE (CN038)

D115

(POWER LED)

IC001

R.C.ADD. DIP switch

A.ADD (CN047)

C-CHK (CN035)

EEPROM

LED (D041 EEPROM LED)

Fig. 9-6

System address

No.

System address

10s digit

(2P DIP switch)

System address

1s place

(Rotary switch)

0 Automatic address

(Setting at shipment = “0”)

Both OFF

“0” setting

1 (If outdoor unit is No. 1)

Both OFF

“1” setting

9-8-3. Automatic address setting using the remote

controller

When the outdoor unit shown in “9-8-1. Basic wiring diagram”
is used for group control of multiple units, use the remote
controller to perform automatic address setting. (During
automatic address setting, “SETTING” blinks on the remote
controller display.)

●

Press the remote controller timer time

button and

button simultaneously. (Hold for 4 seconds or longer.) Then

press the

button. (Item code “AA” appears: All systems

automatic address setting.)

(Automatic address setting is performed in sequence for all

outdoor units from No. 1 to No. 30. When automatic address

setting is completed, the units return to normal stopped

status.)

●

To select each refrigerant system individually and perform

automatic address setting, press the remote controller timer

time

button and

button simultaneously. (Hold for

4 seconds or longer.) Then press either of the temperature

setting

buttons.

(Item code “A1” appears: Individual system automatic

address setting)

Use either the

button to select the

outdoor unit to perform automatic address setting for.

(R.C.1 is displayed.) Then press the

button. (Automatic

address setting is performed for refrigerant system 1.) When

automatic address setting for system 1 is completed, the

system returns to normal stopped status.

Again press the remote controller timer time

button and

the

button simultaneously.

Then in the same way as above (use the

button

to display “R.C.2”), select the next system and perform

automatic address setting.

9-8-4. Indicating (marking) the indoor and outdoor unit

combination number

Indicate (mark) the number after automatic address setting is
completed.

(1) So that the combination of each indoor unit can be easily

checked when multiple units are installed, ensure that the
indoor and outdoor unit numbers correspond to the system
address number on the outdoor unit control PCB, and use
a magic marker or similar means which cannot be easily
erased to indicate the numbers in an easily visible location
on the indoor units (near the indoor unit nameplates).

Example:

(Outdoor) 1 - (Indoor) 1

(Outdoor) 2 - (Indoor) 1

OFF

Outdoor unit control PCB

DIP switch

System address

System address rotary switch
(Set to “0” at time of shipment)

System address rotary switch

10s

20s

OFF

8 – 10 HP

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(2) These numbers will be needed for maintenance. Be sure to

indicate them.

* Use the remote controller to check the addresses of the

indoor units. Press and hold the

button and

button for 4 seconds or longer (simple settings mode).

Then press the

button and select the indoor

address. (Each time the button is pressed, the address

changes as follows: 1-1, 1-2, ... 2-1, 2-2, ....) The indoor

unit fan operates only at the selected indoor unit. Conﬁ rm

that correct fan is operating, and indicate the address on

the indoor unit.

Press

the button again to return to the normal remote

controller mode.

For details, refer to the separate manual.

9-8-5. Main-sub remote controller control

Control using 2 remote controller switches

Main-sub remote controller control refers to the use of 2 remote
controllers to control 1 or multiple indoor units. (A maximum of 2
remote controllers can be connected.)

●

Connecting 2 remote controllers to control 1 indoor unit

1 2

U1U2

1 2

●

Remote controller setting mode

To set the remote controller main/sub setting or change the
sensor, follow the steps below.

(1) Press both and buttons on the remote controller

for more than 4 seconds together.

(2) Select CODE No. with / ( ) buttons.

(3) Change DATA with / (TIMER) buttons.