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Mitsubishi Electric MXZ-SM36NAM Manual De Instalación página 15

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6. Electrical work
Example of a group operation system with multiple outdoor units (Shielding wires and address setting are necessary.)
<Examples of Transmission Cable Wiring: When Not Using a Branch Box>
I M-NET Remote Controller (Fig. 6-2)
I MA Remote Controller (Fig. 6-3)
<Wiring Method and Address Settings: without Branch box system>
a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (M-IC).
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3) of each outdoor unit (OC) to terminals M1, M2
and terminal S on the transmission cable terminal block of the indoor unit (M-IC).
c. Connect terminals 1 (M1) and 2 (M2) on the transmission cable terminal block of the indoor unit (M-IC) that has the most recent address within the same group to the
terminal block on the remote controller (M-NET RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for centralized control (TB7) for the outdoor unit (OC).
e. The jumper connector CN41 on the control panel does not change.
f. Connect shield ground of the indoor units transmission line to the shield (S) terminal of (TB3).
Connect shield ground of the line between outdoor units and the centralized control system transmission line to the shield (S) terminal of (TB7).
g. Set the address setting switch as follows.
Unit
Range
M-IC (Main)
01 to 50
M-IC (Sub)
01 to 50
OC
51 to 100
M-NET RC (Main)
101 to 150
M-NET RC (Sub)
151 to 200
MA-RC
h. The group setting operations among the multiple indoor units is done by the remote controller (M-NET RC) after the electrical power has been turned on.
<Wiring Method and Address Setting: include Branch box system>
Please refer to the Branch box Installation Manual.
<Example of Transmission Cable Wiring: Not using Branch box>
M-NET Remote Controller
OC
(51)
TB3
TB7
M1M2S
M1M2S
D
L
3
OC
(53)
TB7
TB3
M1M2S
M1M2S
Power
Supply Unit
M1M2S
System
controller
M1M2 S
A : Group 1
<Permissible Lengths>
• Maximum line length via outdoor units: L
B : Group 2
L
+L
+L
+L
C : Group 3
3
4
5
(1.25 mm² [AWG16] or more)
D : Shielded Wire
• Indoor/outdoor transmission line Maximum length: L
E : Sub Remote
L
+L
, L
+L
Controller
3
4
2
or more)
( ): Address
• Remote controller cable length:
, R
+R
R
1
2
3
AWG16])
If the length exceeds 10 m [33 ft], use a 1.25 mm²
[AWG16] shielded wire. The section of the cable that
exceeds 10 m [33 ft] must be included in the max
length via outdoor units and max transmission cable
length.
Fig. 6-2
Use the most recent address within the same group of indoor units
Use an address, other than that of the M-IC (Main) from among the units within the same group of indoor units. This
must be in sequence with the M-IC (Main)
Use the most recent address of all the indoor units plus 50
* The address automatically becomes "100" if it is set as "01 - 50".
Set at an M-IC (Main) address within the same group plus 100
Set at an M-IC (Main) address within the same group plus 150
Unnecessary address setting (Necessary main/sub setting)
L
1
A
C
M-IC
M-IC
M-IC
(01)
(02)
(05)
TB5
TB5
TB5
M
1
M
2
S
M
1
M
2
S
M
1
M
2
S
A B
A B
A B
(101)
(105)
(155)
M-NET RC
M-NET RC
M-NET RC
L
E
4
M-IC
M-IC
M-IC
(04)
(07)
(03)
TB5
TB5
TB5
M
1
M
2
S
M1 M2 S
M
1
M
2
S
A B
(104)
M-NET RC
B
+L
1
2
and L
+L
+L
+L
{ 500 m [1640 ft]
6
1
2
5
6
and L
{ 200 m [656 ft] (1.25 mm² [AWG16]
5
6
{ 10 m [33 ft] (0.5 to 1.25 mm² [AWG20 to
Setting Method
MA Remote Controller
M-IC
OC
(51)
(06)
TB3
TB7
M1M2S
M1M2S
TB5
M
1
M
2
S
D
OC
(53)
TB7
TB3
M1M2S
M1M2S
Power
Supply Unit
M1M2
S
System
controller
M1M2
S
<Permissible Lengths>
+L
+L
,
• Maximum line length via outdoor units (M-NET cable): L
3
4
L
+L
+L
+L
and L
3
4
5
6
1
• Indoor/outdoor transmission line Maximum length (M-NET cable): L
,
L
+L
and L
{ 200 m [656 ft] (1.25 mm² [AWG16] or more)
1
2
5
6
• Remote controller cable length: m
[656 ft] (0.3 to 1.25 mm² [AWG22 to AWG16])
L
1
A
M-IC
M-IC
m
2
(01)
(02)
TB5
TB15
TB5
TB15
M
1
M
2
S
1
2
M1 M2 S
1 2
A B
MA-RC
L
L
3
4
M-IC
M-IC
(04)
(03)
TB15
TB5
TB15
TB5
M
1
M
2
S
1 2
M1 M2 S
1 2
A B
MA-RC
B
+L
+L
+L
{ 500 m [1640 ft] (1.25 mm² [AWG16] or more)
2
5
6
, m
+m
+m
and m
1
1
2
3
Fig. 6-3
C
M-IC
M-IC
m
2
(05)
(06)
TB5
TB15
TB5
TB15
M1 M2 S
1 2
M1 M2 S
1 2
A B
A B
MA-RC
MA-RC
E
M-IC
(07)
TB15
TB5
M1 M2 S
1 2
+L
+L
+L
,
1
2
3
4
, L
+L
,
1
3
4
+m
+m
+m
{ 200 m
1
2
3
4
en
14

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