Mitsubishi Electric PUHY-P1000, Service Handbook, Page: 51 / 334

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[2-8 Example System with an ME Remote Controller ]
GB HWE14040
2-8 Example System with an ME Remote Controller
2-8-1 System with a Connection of System Controller to Centralized Control
Transmission Line
(1) Sample control wiring
(2) Cautions
1) ME remote controller and MA remote controller cannot both be
connected to the same group of indoor units.
2) No more than 3 ME 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 connected to different outdoor units with each other.
4) Replacement of male power jumper connector (CN41) must be
performed only on one of the outdoor units (not required if power
to the transmission line for centralized control is supplied from a
controller with a power supply function, such as GB-50ADA).
5) Provide an electrical path to ground for the S terminal on the ter-
minal 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 exceeds 20.
7) A transmission booster is required in a system to which more
than 16 indoor including one or more indoor units of the 200
model or above are connected.

Refer to the DATABOOK for further information about how
many booster units are required for a given system.
8) When a power supply unit is connected to the transmission line
for centralized control, leave the power jumper connector on
CN41 as it is (factory setting).
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Same as 2-7-3
2) Transmission line for centralized control
Same as 2-7-4
3) M-NET remote controller wiring
Maximum overall line length
(0.3 to 1.25mm
2
[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
2
[AWG16]. The section of the cable
that exceeds 10m [32ft] must be included in the maximum in-
door-outdoor transmission line distance described in 1).
*When connected to the terminal block on the Simple remote
controller, use cables that meet the following cable size specifi-
cations: 0.75 - 1.25 mm
2
[AWG18-14].
4) Maximum line distance via outdoor unit
(1.25 mm
2
[AWG16] min.)
Same as 2-7-4
IC
TB5
S
TB15
1 2
01
IC
TB5
S
TB15
1 2
02
LC
TB5
S
07
IC
TB5
S 1 2
TB15
IC
TB5
S
TB15
1 2
05 04
LC
TB5
S
08
IC
TB5
S
TB15
1 2
03
IC
TB5
S
TB15
1 2
06
A B
RC
101
A B
RC
102
A B
RC
103
Group
Group
Group Group Group
M1 M2 M1 M2 M1 M2 M1 M2
M1 M2 M1 M2 M1 M2 M1 M2
L12 L11
L22 L21
L31
A B S
L32
Note1
System controller
Interlock operation with
the ventilation unit
OC
TB3
TB7
S
51
m1
OS1
TB3
TB7
S
52
OS2
TB3
TB7
M1 M2 M1 M2 M1 M2
M1 M2 M1 M2 M1 M2 S
53
OC
TB3
TB7
S
54
OS1
TB3
TB7
S
55
OS2
TB3
TB7
M1 M2 M1 M2 M1 M2
M1 M2 M1 M2 M1 M2 S
56
Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON
SW5-1 OFF ON
Move the male connector
from CN41 to CN40.
To be connected
To be left
unconnected
To be left
unconnected
To be left
unconnected
To be left
unconnected
To be left
unconnected
104
A B
RC
154
A B
RC
m3
106
A B
RC
m2
Note1 When only the LM adapter is connected,
leave SW5-1 to OFF (as it is).
Note2 LM adapters require the power supply
capacity of single-phase AC 220/240V.