Mitsubishi Electric TRANE NTXMMX48A182B Serie Manuel D'installation page 15

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:
• Be 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.
• Be 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 TB3 1 1
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
System System
5 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
1 1 A A
S1 S1 S1 S1 A-IC A-IC
2 2 B B
S2 S2 S2 S2 (01)
(01)
S3 S3 S3 S3
TB5 TB5 TB3B TB3B TB TB TB5/TB15 TB5/TB15
A A
M1 M1 S1 S1 S1 S1 A-IC A-IC 1 1
S2 2 B B
M2 M2 S2 S2 S2 (02) (02) 2
S3 S3
S S S3 S3
TB3C TB3C TB5/TB15 TB5/TB15
TB TB
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 TB TB
Branch Box Branch Box TB5/TB15 TB5/TB15
S1
S1 S1 S1 A-IC A-IC 1 1 A A
S2 S2
S2 S2 2 2 B B
(06) (06)
S3 S3
S3 S3
TB5 TB5 TB3B TB3B TB TB
(06) (06)
M1 M1 S1 S1 S1 S1 A-IC A-IC
M2 M2 S2 S2 S2 S2
(07) (07)
S3 S3
S S 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. M-NET Control indoor unit cannot be connected to the branch boxes or out-
door unit.
3-4. M-NET Remote controller cannot be connected to this system.
MAX length via outdoor units:
L + L + L + L + L
1 2 3 4 5
MA-RC
MA-RC
Longest transmission cable length
L + L , L + L , L 200 m (656 ft.) (1.25 mm
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
500 m (1640 ft.) (1.25 mm [AWG 16] or more)
2
[AWG 16] or more)
2
25m (82ft.) (2.1mm
6
200m (656 ft.) (0.3 to 1.25mm
1
2
[AWG22
2
en
14