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[ II Restrictions ]
[5] An Example of a System to which an M-NET Remote Controller is connected
1. An example of a system in which a system controller is connected to the transmission line for central
control
In the case of R2
CN41 CN40
L1
L2
Replace
SW2-1 OFF ON
Note1
OC
*1 BC
51
52
TB7
TB3
TB02
M1M2 S
M1M2
M1M2 S
Connect
M1M2 S
TB02
55
*1 BS
In the case of R2
Leave the male
connector
L21
L22
on CN41 as it is.
SW2-1 OFF ON
Note1
OC
*1 BC
53
54
TB3
TB7
TB02
M1M2 S
M1M2
M1M2 S
NO
Note1 When only the LM adapter is connected,
leave SW2-1 to OFF (as it is).
Note2 LM adapters require the power supply
capacity of single-phase AC 208/230V.
1. M-NET remote controller and MA remote controller cannot both be con-
nected to the same group of indoor units.
2. No more than 2 M-NET remote controllers can be connected to a group of
indoor units.
3. Do not connect the terminal blocks (TB5) on the indoor units that are con-
nected to different outdoor units with each other.
4. When connecting a system controller to the transmission line for central-
ized control or performing a group operation of units in a system with mul-
tiple outdoor units, the replacement of male power supply switch connector
(CN41) with CN40 must be performed only on one of the outdoor units in
the system.
5. Connect the S (shielded) terminal of the terminal block for transmission line
for centralized control (TB7) on the outdoor unit whose male connector of
the CN41 was plugged into CN40 to the ground terminal ( ) on the unit.
6. A transmission booster must be connected to a system in which the total
number of connected indoor units exceeds 20 (19 with one BC, 18 with one
BC and BS each).
7. A transmission booster must be connected to a system to which more than
16 indoor units (15 with one BC, 14 with one BC and BS each) including
one or more indoor units of 72 model or above are connected
Sample control wiring
In the case of Y
CN41 CN40
Replace
SW2-1 OFF ON
Note1
OC
51
TB7
TB3
M1M2 S
M1M2
Connect
In the case of Y
Leave the male connector
on CN41 as it is.
Note1
SW2-1 OFF
ON
OC
53
TB3
TB7
M1M2 S
M1M2
NO
Note2
System controller
M1M2 S
Don'ts
- 46 -
L2
L3
Group
Group
IC
01
TB5
TB15
TB5
M1M2 S
1 2
M1M2 S
A1 B2
A1 B2
101
102
RC
RC
L22
L23
Group
IC
IC
03
04
TB5
TB5
TB15
TB15
M1M2 S
1 2
M1M2 S
1 2
A1 B2
A1 B2
153
103
RC
RC
*1 BC and BS are found only in the R2 system.
Maximum allowable length
(1) Indoor/outdoor transmission line
Same as [4] 3.
(2) Transmission line for centralized control
Same as [4] 4.
(3) M-NET remote controller wiring
Maximum overall line length
2
(0.3 to 1.25mm
m1 10m [32ft]
m2+m3 10m [32ft]
If the standard-supplied cable must be extend-
ed, use a cable with a diameter of 1.25mm
[AWG16]. The section of the cable that ex-
ceeds 10m [32ft] must be included in the max-
imum indoor-outdoor transmission line
distance described in (1).
Interlock operation with
the ventilation unit
L4
LC
IC
05
07
TB15
TB5
1 2
M1M2 S
NO
L24
LC
06
TB5
M1M2 S
[AWG22 to 16])
2
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