10
8. Electrical work
Outdoor unit
Circuit breaker
Indoor unit
Circuit breaker
indoor
unit C
indoor
unit D
indoor
unit C
indoor
unit A
indoor
unit B
indoor
unit E
indoor
unit A
indoor
unit B
Indoor unit
M-NET Branch BOX #2
(3-branches type)
P
ull
box
P
ull
box
M-NET Branch BOX #1
(5-branches type)
L
B1
B2
M1
M2
L
N
TB3A
N
TB3B
TB3C
TB3
TB2B
TB5
TB3A
TB3B
TB3C
TB2B
TB5
L
N
M1
M2
S
~
(A)
(A)
(B)
(C)
(C)
(C)
(C)
(C)
(C)
(C)
(C)
M1
M2
S
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
TB3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
(B)
~
Supply power (1-phase) separately to branch box and outdoor
unit
Indoor unit
indoor
unit C
indoor
unit D
Indoor unit
indoor
unit C
Circuit breaker
indoor
unit A
indoor
unit B
indoor
unit E
indoor
unit A
indoor
unit B
(3-branches type)
(5-branches type)
M-NET Branch BOX #2
Outdoor unit
M-NET Branch BOX #1
L
B1
B2
M1
M2
N
M1
M2
S
TB3A
N
TB3B
TB3C
TB3D
TB3E
TB2B
TB5
TB3A
TB3B
TB3C
TB2B
TB5
L
M1
N
M2
S
(A)
(A)
(B)
(C)
(C)
(C)
(C)
(C)
(C)
(C)
(C)
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
L
(B)
~
Power supply (1-phase) from Outdoor unit
* Refer to installation manual of the outdoor unit
8.2. External wiring procedure (Fig. 8-8)
Outdoor unit
Reactor Box
(Optional parts)
Circuit breaker
Indoor unit
Circuit breaker
indoor
unit C
indoor
unit D
indoor
unit C
indoor
unit A
indoor
unit B
indoor
unit E
indoor
unit A
indoor
unit B
Indoor unit
M-NET Branch BOX #2
(3-branches type)
Pu
ll
bo
x
P
ull
box
M-NET Branch BOX #1
(5-branches type)
L
B1
B2
M1
M2
L
N
TB3A
N
TB3B
TB3C
TB3
TB2B
TB5
TB3A
TB3B
TB3C
TB2B
TB5
L
N
M1
M2
S
E
(B)
(C)
(C)
(C)
(C)
(C)
(C)
(C)
(C)
M1
M2
S
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
D
TB3E
(A)
(A)
L
N
L
N
(A)
(A)
L
N
L
N
Reactor Box
(Optional parts)
(B)
~
~
Fig. 8-8
Supply power (1-phase) separately to branch box and outdoor
unit
When installing the unit in a regular house. (Refer to Note
8
)
Indoor unit
indoor
unit C
indoor
unit D
Indoor unit
indoor
unit C
Circuit breaker
indoor
unit A
indoor
unit B
indoor
unit E
indoor
unit A
indoor
unit B
(3-branches type)
(5-branches type)
M-NET Branch BOX #2
Outdoor unit
M-NET Branch BOX #1
L1
B1
B2
M1
M2
N
M1
M2
S
TB3A
L2
TB3B
TB3C
TB3D
TB3E
TB2B
TB5
TB3A
TB3B
TB3C
TB2B
TB5
L
M1
N
M2
S
(A)
(A)
(B)
(C)
(C)
(C)
(C)
(C)
(C)
(C)
(C)
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
L
(A)
N
L
N
L
Reactor Box
(Optional parts)
L3
N
(B)
~
Power supply (3-phase) from Outdoor unit
When installing the unit in a regular house. (Refer to Note
8
)
* Refer to installation manual of the outdoor unit