6. Electrical work
3-4. Connection of M-NET Remote controller
O
C
BC
(5-branch type)
A
B
C
D
A-IC A-IC A-IC
A-IC A-IC
WL-RC WL-RC
WL-RC WL-RC
WL-RC
6.4. Branch box/outdoor wire connection and outdoor power supply cord connection (Fig. 6-2)
Warning:
• B e sure to attach the terminal block covers/panel of the outdoor unit securely. If it is not attached correctly, it could result in a fire or an electric shock due to
dust, water, etc.
• B e sure to connect the power supply cords and the connecting wires for the indoor units, outdoor units, and branch boxes directly to the units (no intermediate
connections).
Intermediate connections can lead to communication errors if water enters the cords or wires and causes insufficient insulation to ground or a poor electrical
contact at the intermediate connection point.
(If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cords and wires.)
Caution:
• Be careful not to make mis-wiring.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confirm that they not move.
• If the connecting wire is incorrectly connected to the terminal block, the unit does not operate normally.
• Connect wire from the branch box correctly to the terminal block.
• For future servicing, give extra length to connecting wire.
OC
OC
(51)
(51)
L
L
TB3
1
1
TB3
TB7
TB7
M1 M2 S M1 M2 S
M1 M2 S M1 M2 S
L
L
3
3
L
L
2
2
OC
OC
(53)
(53)
TB7
TB7
L
L
4
4
TB3
TB3
A
A
M1 M2 S
M1 M2 S
M1 M2
M1 M2
S
S
Power Supply
Power Supply
A
A
Unit
Unit
M1 M2 S
M1 M2 S
L
L
5
System
System
5
controller
controller
M1 M2 S
M1 M2 S
A : Shielded wire
( ) : Address example
Fig. 6-2
E
M-NET
RC
NO
L
m
6
1
TB3A
TB3A
TB
TB
TB5/TB15
TB5/TB15
Branch Box
Branch Box
S1
S1
S1
S1
1
1
A
A
A-IC
A-IC
2
B
S2
S2
S2
S2
2
B
(01)
(01)
S3
S3
S3
S3
TB5
TB5
TB3B
TB
TB
TB5/TB15
TB5/TB15
TB3B
M1
M1
S1
S1
S1
S1
1
1
A
A
A-IC
A-IC
M2
M2
S2
S2
S2
S2
2
2
B
B
(02)
(02)
S
S
S3
S3
S3
S3
TB3C
TB3C
TB5/TB15
TB
TB
TB5/TB15
S1
S1
S1
S1
1
1
A
A
A-IC
A-IC
S2
S2
S2
S2
2
2
B
B
(03)
(03)
S3
S3
S3
S3
(01)
(01)
TB3D
TB3D
TB
TB
S1
S1
S1
S1
A-IC
A-IC
S2
S2
S2
S2
(04)
(04)
S3
S3
S3
S3
TB3E
TB3E
TB
TB
S1
S1
S1
S1
A-IC
A-IC
S2
S2
S2
S2
(05)
(05)
S3
S3
S3
S3
TB3A
TB3A
Branch Box
TB
TB
TB5/TB15
TB5/TB15
Branch Box
S1
S1
S1
S1
1
1
A
A
A-IC
A-IC
S2
S2
S2
S2
2
2
B
B
(06)
(06)
S3
S3
S3
S3
TB5
TB5
TB3B
TB
TB
TB3B
(06)
(06)
M1
M1
S1
S1
S1
S1
A-IC
A-IC
M2
M2
S2
S2
S2
S2
(07)
(07)
S
S
S3
S3
S3
S3
TB3C
TB3C
TB
TB
S1
S1
S1
S1
A-IC
A-IC
S2
S2
S2
S2
(08)
(08)
S3
S3
S3
S3
3-1. Plural indoor units cannot be operated by a single remote controller.
3-2. Different refrigerant systems cannot be connected together.
3-3. Indoor units of CITY MULTI series cannot be connected to the branch boxes or
outdoor unit.
3-4. M-NET Remote controller cannot be connected to this system.
MAX length via outdoor units:
+ L
+ L
+ L
+ L
500 m (1640 ft.) (1.25 mm
L
1
2
3
4
5
MA-RC
MA-RC
Longest transmission cable length
+ L
+ L
200 m (656 ft.) (1.25 mm
L
, L
, L
1
2
3
4
5
MA-RC
MA-RC
MAX transmission cable length (A-Control cable) : L
[AWG14])
MA-RC
MA-RC
Remote controller cable length : m
to AWG16] or more)
WL-RC
WL-RC
WL-RC
WL-RC
MA-RC
MA-RC
WL-RC
WL-RC
WL-RC
WL-RC
Loosen terminal screw.
Terminal
Lead wire
block
Connection details
[AWG 16] or more)
2
[AWG 16] or more)
2
25m (82ft.) (2.1mm
6
200m (656 ft.) (0.3 to 1.25mm
[AWG22
2
1
2
en
14