Mitsubishi Electric MSZ-FS18NA Manuel D'installation page 32

6. Electrical work
<Example of Transmission Cable Wiring: Connecting with Branch box>
OC
(51)
TB3
TB7
M1 M2 S M1 M2 S
L
3
A
OC
(53)
TB7
L
4
TB3
M1 M2 S
M1 M2 S
Power
A
Supply
Unit
M1 M2 S
L
5
System
controller
M1 M2 S
A : Shielded wire
( ) : Address example
A-IC : M, S, P series Indoor unit
<Permissible Lengths>
• Maximum line length via outdoor units (M-NET cable):
L + L + L + L + L { 500 m [1640 ft] (1.25 mm
1 2 3 4 5
• Branch box/outdoor transmission line Maximum length (M-NET cable):
L + L , L + L , L { 200 m [656 ft] (1.25 mm
1 2 3 4 5
• Indoor/Branch box transmission line Maximum length (A-control cable):
L { 25 m [82 ft] (1.5 mm² [AWG14])
6
• Remote controller cable length:
m { 200 m [656 ft] (0.3 to 1.25 mm² [AWG22 to AWG16])
1
<Incorrect Systems>
1. Group operation by single
remote controller
O C
(3-branch type)
BC
A B C
A-IC A-IC A-IC
MA-RC WL-RC
NO
en
15
L
6
TB3A TB3A
BC
S1 S1
A-IC
S2 S2
(01)
S3 S3
L
1
TB5 TB3B TB3A
M1 S1 S1
A-IC
S2 S2
M2 (02)
S3 S3
S
TB3C TB3A
S1
S1 A-IC
S2
S2 (03)
S3
S3
(01)
TB3D TB3A
S1 S1
A-IC
L
S2 S2
2 (04)
S3 S3
TB3E TB3A
S1
S1 A-IC
S2
S2
(05)
S3
S3
A
TB3A TB3A
BC
S1
S1 A-IC
S2 S2
(06)
S3 S3
TB5 TB3B TB3A
(06)
S1 S1
M1 A-IC
S2 S2
M2 (07)
S3 S3
S
TB3C TB3A
S1
S1 A-IC
S2
S2 (08)
S3
S3
[AWG16] or more)
2
[AWG16] or more)
2
Fig. 6-4
2. Group operation between different
refrigerant systems
O C
(3-branch type) (3-branch type)
BC BC
A B C A
A-IC A-IC
MA-RC
NO
m
1
TB15
1 A
MA-RC
2 B
TB15
1 A
MA-RC
2 B
TB15
A
1
MA-RC
2 B
WL-RC
WL-RC
TB15
1 A
MA-RC
2 B
WL-RC
WL-RC
3. Connection of M-NET Remote controller
OC
O C
B C
A-IC A B
WL-RC
A-IC A-IC
MA-RC MA-RC
1. Plural indoor units cannot be operated by a single remote controller.
2. Different refrigerant systems cannot be connected together.
3. M-NET remote controller cannot be connected.
BC (5-branch type)
C D E
A-IC A-IC A-IC
WL-RC WL-RC WL-RC
M-NET
RC
NO