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6. Electrical work
Example for the operation using 2 M-NET remote controllers
I Example of wiring Transmission cables
L
1
OC
(51)
TB3
TB7
TB5
M1 M2 S
M1 M2 S
M1 M2 S
A B
(101)
M-NET RC
M-NET RC
(Main)
Using 2 M-NET remote controllers for each CITY MULTI series indoor unit.
Note:
Combinations of standard operation, operation using 2 M-NET remote controllers, and group operation are possible.
I Wiring Method and Address Settings
1. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (M-IC).
2. Use feed wiring to connect terminals M1, M2 and the ground terminal on transmission cable terminal block (TB3) for the outdoor unit (OC) to terminals M1 and M2 on
the transmission cable terminal block (TB5) of each CITY MULTI series indoor unit (M-IC). Use nonpolarized 2-core wire.
3. Connect terminals M1 and M2 on transmission cable terminal block (TB5) for each indoor unit with the terminal block on M-NET the remote controller (M-NET RC).
4. Set the address setting switch (on P.C.B) as shown below.
Unit
M-IC
OC
M-NET RC (Main)
M-NET RC (Sub)
I Permissible Lengths
1. Maximum transmission cable length between indoor and outdoor unit (1.25 mm² [AWG16] or more):
L1 + L2 ≤ 200 m [656 ft]
2. M-NET Remote controller cable length:
1+ 2 ≤ 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
TB5 TB15
M1 M2 S
M1 M2 S
M1 M2 S
A B
(101)
M-NET RC
M-NET RC
(Main)
en
*1.
Use the CITY MULTI series indoor unit (M-IC) address plus 150 as the sub M-NET remote controller address. In this case, it should be 152.
*2.
3 or more M-NET remote controllers (M-NET RC) cannot be connected to 1 CITY MULTI series indoor unit.
19
L
2
M-IC
M-IC
(01)
(02)
TB15
TB5
TB15
M1 M2 S
1 2
1 2
A B
A B
A B
(151)
(102)
(152)
M-NET RC
M-NET RC
(Sub)
(Main)
(Sub)
Range
001 to 050
—
051 to 100
Use the smallest address of all the indoor units plus 50.
* The address automatically becomes "100" if it is set as "01–50".
101 to 150
Indoor unit address plus 100.
151 to 200
Indoor unit address plus 150.
M-IC
M-IC
(01)
(02)
TB5 TB15
1 2
M1 M2 S
1 2
A B
A B
A B
A B
(151)
(102)
(104)
M-NET RC
M-NET RC
M-NET RC
(Sub)
(Main)
(Sub)
*1
( ) : Address
Setting Method
( ) : Address
*2
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