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6. Electrical work
I Permissible Lengths
1. Maximum transmission cable length via outdoor unit:
L1+L2+L3+L4, L3+L4+L5+L6, L1+L2+L5+L6 ≤ 500 m [1640 ft] (1.25 mm² [AWG16] or more)
2. Maximum transmission cable length between indoor, branch box and outdoor unit:
L1, L3+L4, L2+L5, L6 ≤ 200 m [656 ft] (1.25 mm² [AWG16] or more)
3. M-NET Remote controller cable length:
1, 2 + 3 ≤ 10 m [32 ft] (0.5 to 1.25 mm² [AWG20 to AWG16])
If the length exceeds 10 m [32 ft], use a 1.25 mm² [AWG16] shielded wire.
The section of the cable that exceeds 10 m [32 ft] must be included in the maximum length via outdoor units and maximum transmission cable length.
I Constraint items
OC
(51)
TB3
TB7
M1 M2 S
M1 M2 S
D
OC
(53)
TB3
TB7
M1 M2 S
M1 M2 S
Power Supply
*2
Unit
M1 M2 S
System
controller
M1 M2 S
Set all addresses to ensure that they are not overlapped.
M-NET remote controller and MA remote controller cannot be connected with the CITY MULTI series indoor unit of the same group wiring together.
*1.
Never connect together the terminal blocks (TB5) for transmission wires for CITY MULTI series indoor units (M-IC) that have been connected to different outdoor units
(OC).
*2.
The earth processing of S terminal for the centralized control terminal block (TB7) is unnecessary. Connect the terminal S on the power supply unit with the earth.
Example of an MA remote controller system (Address setting is not necessary.)
<In the case of same group operation, need to set the address that is only main CITY MULTI series indoor unit.>
Example for the standard operation
■
Example of wiring transmission cables
L
1
OC
(00)
M-IC
(00)
TB3
TB7
TB5 TB15
M1 M2 S
M1 M2 S
M1 M2 S
1 2
A B
MA-RC
1 MA remote controller for each indoor unit
Note:
Combinations of standard operation, operation using 2 M-NET remote controllers, and group operation are possible.
A
M-IC
M-IC
(01)
(02)
TB5
TB5
M1 M2 S
M1 M2 S
A B
(101)
M-NET RC
M-IC
M-IC
(04)
(03)
TB5
TB5
M1 M2 S
M1 M2 S
A B
(104)
M-NET RC
B
L
2
M-IC
( ) : Address
(00)
TB5 TB15
M1 M2 S
1 2
A B
MA-RC
C
M-IC
M-IC
*1
(05)
(06)
TB5
TB5
M1 M2 S
M1 M2 S
A B
A B
(105)
(155)
M-NET RC M-NET RC
E
M-IC
(07)
TB5
M1 M2 S
A :
B :
C :
D :
E :
( ) : Address
Group
Group
Group
Shielded Wire
Sub M-NET Remote Controller
en
22
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