An Example Of A System To Which An M-Net Remote Controller Is Connected - Mitsubishi Electric PUHY-P72 Service Manual

[ II Restrictions ]

[6] An Example of a System to which an M-NET Remote Controller is connected

(1) Sample control wiring
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS2
53
TB3
M1 M2
TB7
M1 M2 S
Not
connect
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS2
56
TB3
M1 M2
TB7
M1 M2 S
Not
connect
(2) Cautions
1) M-NET remote controller and MA remote controller can-
not both be connected to the same group of indoor units.
2) No more than 3 M-NET remote controllers can be con-
nected to a group of indoor units.
3) Do not connect the terminal blocks (TB5) on the indoor
units that are connected to different outdoor units with
each other.
4) Replace the power jumper connector of the control board
from CN41 to CN40 on only one of the outdoor units.
5) Provide an electrical path to ground for the S terminal on
the terminal block for centralized control on only one of
the outdoor units.
6) A transmission booster must be connected to a system
in which the total number of connected indoor units ex-
ceeds 20.
7) A transmission booster is required in a system to which
more than 16 indoor including one or more indoor units
of the 72 model or above are connected.
8) When a power supply unit is connected to the transmis-
sion line for centralized control, leave the power jumper
connector on CN41 as it is (factory setting).
HWE0804A
L11
CN41 CN40 Replace
Leave the male
connector on
SW2-1 OFF ON
CN41 as it is.
Group
SW2-1 OFF ON
OS1 OC
52 51
TB3 TB3
M1 M2 M1 M2 M1 M2
TB7 TB7
M1 M2 S M1 M2 S
Not
connect
Connect
L21
Leave the male Leave the male
connector on connector on
CN41 as it is. CN41 as it is.
SW2-1 OFF ON SW2-1 OFF ON
Group
OS1 OC
55 54
TB3 TB3
M1 M2 M1 M2
TB7 TB7
M1 M2 S M1 M2 S
Not
connect
Not
connect
Note1
System controller
A B S
Interlock operation with
the ventilation unit
L12
Group
IC IC
01 02
TB5 TB15 TB5 TB15
S 1 2 M1 M2 S 1 2
A B A B
101 102
RC RC
L22
Group
IC IC
04 05
TB5 TB5 TB15
TB15
M1 M2 S 1 2 M1 M2 S 1 2
A B A B
154 104
RC RC
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.
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Same as [5] 3.
2) Transmission line for centralized control
Same as [5] 4.
3) M-NET remote controller wiring
Maximum overall line length
2
(0.3 to 1.25mm [AWG22 to 16])
m1 10m [32ft]
m2+m3 10m [32ft]
If the standard-supplied cable must be extended, use a
cable with a diameter of 1.25mm
of the cable that exceeds 10m [32ft] must be included in
the maximum indoor-outdoor transmission line distance
described in (1).
When connected to the terminal block on the Simple re-
mote controller, use cables that meet the following cable
size specifications: 0.75 - 1.25 mm
- 37 - 37
Group
LC
IC
03 07
TB5 TB15 TB5
M1 M2 S 1 2 M1 M2 S
A B
103
RC
LC
IC
08
06
TB5 TB15 TB5
M1 M2 M1 M2 S
S 1 2
A B
106
RC
2
[AWG16]. The section
2
[AWG18-14].
GB