18
GB
2
Wiring examples
Controller name, symbol and allowable number of controllers.
Name
Code
Possible unit connections
Outdoor unit
Main unit
OC
– (*2)
Sub unit
OS
– (*2)
BC controller
Main unit
BC
One controller for one OC
Sub unit
BS
Zero, one or two controllers for one OC
Indoor unit
Indoor unit controller
IC
1 to 30 units per 1 OC (*1)
Remote controller
Remote controller (*1)
RC
2 units maximum per group
Other
Transmission booster unit
RP
0 to 2 units per 1 OC (*1)
*1 A transmission booster (RP) may be required depending on the number of connected indoor unit controllers.
*2 OC and OS of the outdoor units in the same refrigerant system are automatically identified. They are identified as OC and OS in descending order of capacity. (If the
capacity is the same, they will be in ascending order of their address number.)
Example of a group operation system with multiple outdoor units (Shielding wires and address setting are necessary.)
<Examples of transmission cable wiring>
[Fig. 11..1] M-NET Remote Controller
A
B
C
E
D
M1M2
M1M2 S
TB7
TB3
IC
(51)
M1
M2 S
TB5
ME
(01)
IC
M1
M2 S
TB5
(02)
IC
M1
M2 S
TB5
(04)
IC
M1
M2 S
TB5
(03)
IC
M1
M2 S
TB5
(05)
IC
M1
M2 S
TB5
(07)
IC
M1
M2 S
TB5
(06)
L
2
L
1
(101)
ME
(105)
ME
(103)
ME
(155)
M1M2
M1M2 S
TB7
TB3
CN41
(53)
OC
A B S
System
controller
L
3
L
6
L
4
L
5
A B
A B
A B
A B
BC
M1
M2 S
(52)
BS
M1
M2 S
(55)
BC
M1
M2 S
(54)
TB02
TB02
TB02
111
444
222
333
OC
CN41
CN41 CN40
<A> Change the jumper connector
from CN41 to CN40 *1
<B> SW2-1: ON *2
( ) Address
<C> Keep the jumper connector
on CN41
<B> SW2-1: ON *2
*1: When the power supply unit is not connected to the transmission line for centralized control, disconnect the male power supply connector (CN41) from ONE
outdoor unit in the system and connect it to CN40.
*2: If a system controller is used, set SW2-1 on all of the outdoor units to ON.
[Fig. 11..] MA Remote Controller
A
B
C
E
D
M1M2 S
TB7
IC
(51)
M1
M2
1 2
S
TB5
TB15
1 2
TB15
1 2
TB15
1 2
TB15
1 2
TB15
1 2
TB15
1 2
TB15
MA
(01)
IC
M1
M2 S
TB5
(02)
IC
M1
M2 S
TB5
(04)
IC
M1
M2 S
TB5
(03)
IC
M1
M2 S
TB5
(05)
IC
M1
M2 S
TB5
(07)
IC
M1
M2 S
TB5
(06)
L
2
L
1
MA
MA
MA
M1M2 S
TB7
TB3
(53)
S
System
controller
L
3
L
6
L
4
A B
A B
A B
A B
A B
BC
M1
M2 S
(52)
BS
M1
M2 S
(55)
BC
M1
M2 S
(54)
TB02
TB02
TB02
CN41 CN40
OC
OC
CN41
M1M2
TB3
M1M2
1
1
3
2
4
2
1
2
A
: Group 1
B
: Group 3
C
: Group 5
D
: Shielded wire
E
: Sub remote
controller
( ) Address
<A> Change the jumper connector
from CN41 to CN40 *1
<B> SW2-1: ON *2
<C> Keep the jumper connector
on CN41
<B> SW2-1: ON *2
*1: When the power supply unit is not connected to the transmission line for centralized control, disconnect the male power supply connector (CN41) from ONE
outdoor unit in the system and connect it to CN40.
*2: If a system controller is used, set SW2-1 on all of the outdoor units to ON.
•