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10-4. System configuration
・Unit code and the maximum number of connectable units
Unit type
Outdoor unit
Indoor unit
BC controller
HBC controller
Remote controller
Transmission booster unit
* A transmission booster may be required depending on the number of connected indoor units and sub BC controllers.
* The outdoor units in the same refrigerant circuit are automatically designated as OC and OS. The outdoor units are designated as OC and OS
in the order of capacity from large to small (if two or more units have the same capacity, in the order of address from small to large).
・System configuration example
* The numbers in the parentheses in the figures below indicate address numbers.
(1) When ME remote controllers are connected
* Move the power jumper from
CN41 to CN40. *
1
* SW5-1: ON *
2
* Leave the power jumper
connected to CN41.
* SW5-1: ON *
2
Ⓐ
Shielded cable
Main remote controller
Ⓑ
Sub remote controller
Ⓒ
Ⓓ
System controller
*1 When a power supply unit is not connected to the centralized control transmission cable, move the power jumper from CN41 to CN40 on
only one of the outdoor units.
*2 If a system controller is used, set SW5-1 on ALL of the outdoor units to ON.
*3 In an R2 system: BC, BS
In a Hybrid City Multi system: HB, HS
Maximum allowable length of control cables
Transmission cables via outdoor units
Transmission cables
Remote controller cables
*4 When extending the length of the transmission cables to 1000 m (3280 ft), consult your dealer.
WT09973X01
Code
Main unit
OC
Sub unit
OS
IC
Main
BC
Sub
BS
Main
HB
Sub
HS
RC
RP
OC
CN41 CN40
(51)
TB3
M1M2
M1M2 S
TB7
Ⓐ
OC
CN41
CN41
(53)
TB3
M1M2
M1M2 S
TB7
Ⓓ
A B S
Number of connectable units
–
–
1 to 50 units per OC (depends on the unit model)
1 unit per OC
0 to 11 units per OC
1 to 2 units per OC
0 to 2 units per OC
0 to 2 units per group
0 to 2 units per OC
Group 1
IC
*3
BC
(52)
(01)
TB02
M1 M2 S
TB5
M1 M2 S
A B
(101)
ME
Ⓑ
L
3
IC
*3
BC
(54)
(02)
TB02
M1 M2 S
TB5
M1 M2 S
L
+ L
+ L
+ L
, L
+ L
1
2
3
4
1
L
, L
+ L
, L
+ L
, L
1
3
4
3
5
ℓ
, ℓ
, ℓ
, ℓ
≤ 10 m (32 ft)
1
2
3
4
* If the length exceeds 10 m (32 ft), the length that exceeds 10 m (32 ft) needs
to be included in the maximum allowable length of transmission cables
above.
46
L
1
Group 3
IC
*3
BS
(55)
(04)
TB02
M1 M2 S
TB5
M1 M2 S
L
4
IC
(03)
TB5
M1 M2 S
A B
(103)
ME
Ⓑ
+ L
+ L
, L
+ L
+ L
≤ 500 m (1640 ft)
2
3
5
1
2
6
, L
+ L
≤ 200 m (656 ft)
6
2
6
Group 5
IC
IC
(05)
(06)
TB5
TB5
M1 M2 S
M1 M2 S
A B
A B
(105)
(155)
ME
ME
Ⓑ
Ⓒ
IC
(07)
TB5
M1 M2 S
*4
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