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[ II Restrictions ]
51- 51 -
HWE09080 GB
2. A system in which a system controller is connected to the centralized control transmission line <PQRY>
(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 heat source units with each
other.
4) Replace the power jumper connector of the control board
from CN41 to CN40 on only one of the heat source units.
5) Provide an electrical path to ground for the S terminal on the
terminal block for centralized control on only one of the heat
source units.
6) When the number of the connected indoor units is as shown
in the table below, one or more transmission boosters (sold
separately) are required.
To connect two transmission boosters, connect them in par-
allel. (Observe the maximum number of connectable indoor
units that are listed in the specifications for each heat source
unit.)
The left table shows the number of transmission boosters
that is required by the system with three BC controllers. For
each BC controller that is subtracted from the above-men-
tioned system, two additional indoor units can be connected.
7) When a power supply unit is connected to the transmission
line for centralized control, leave the power jumper connec-
tor on CN41 as it is (factory setting).
(3) Maximum allowable length
1) Indoor-heat source transmission line
Same as [5] 8.
2) Transmission line for centralized control
Same as [5] 9.
3) ME 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 indoor-heat source transmission line dis-
tance 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
2
[AWG18-16].
4) Maximum line distance via heat source unit
(1.25 mm
2
[AWG16] or large)
Same as [5] 9.
IC
TB5
S
TB
15
12
01
IC
TB5
S
TB
15
12
02
LC
TB5
S
07
IC
TB5
S
12
TB
15
IC
TB5
S
TB
15
12
0504
LC
TB5
S
08
IC
TB5
S
TB
15
12
03
IC
TB5
S
TB
15
12
06
A1 B2
RC
101
A1 B2
RC
102
A1 B2
RC
103
Group
Group
Group
Group Group
To be connected
M1M2
M1M2M1M2
M1M2 M1M2 M1M2 M1M2
L31
ABS
L32
OC
m1
TB3
TB7
M1M2
S
51
OS
TB3
TB7
M1M2
M1M2 M1M2
S
52
OC
TB3
TB7
S
55
OS
TB3
TB7
S
56
To be left
unconnected
Interlock operation with the ventilation unit
*1 When only the LM adapter is connected, leave SW2-1 to OFF (as it is).
*2 LM adapters require the power supply capacity of single-phase AC 208 - 230V.
System controller
Note1
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
Move the male connector
from CN41 to CN40.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
M1M2
M1M2 M1M2
M1M2 M1M2
To be left
unconnected
To be left
unconnected
104
A1 B2
RC
154
A1 B2
RC
m3
106
A1 B2
RC
m2
S
BC
TB02
53
S
BC
TB02
57
L12
L11
L22
L21
M1M2
M1M2
Number of transmission booster
(sold separately) required
1 unit 2 units 3 units
When the P72 and P96 models
are not included in the connected
indoor units
15 - 34
units
35 - 50
units
-
When the P72 or P96 model is in-
cluded in the connected indoor
units
11 - 26
units
27 - 42
units
43 - 50
units