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[ II Restrictions ]
47- 47 -
HWE09080 GB
11. A system with multiple BC controller connections (with a system controller connected to the centralized control line)
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(1) Sample control wiring
(2) Cautions
1) ME remote controller and MA remote controller cannot both be con-
nected to the same group of indoor units.
2) No more than 2 MA 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) Replacement of male power jumper connector (CN41) must be per-
formed only on one of the heat source units.
5) Short-circuit the S (shield) terminal of the terminal block for the cen-
tral control unit (TB7) and the ground terminal ( ) on the heat
source unit whose power jumper was moved from CN41 to CN40.
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 parallel.
(Observe the maximum number of connectable indoor units that are
listed in the specifications for each heat source unit.)
The table above shows the number of transmission boost-
ers that is required by the system with three BC controllers.
For each BC controller that is subtracted from the above-
mentioned system, two additional indoor units can be con-
nected.
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
Maximum distance (1.25mm
2
[AWG16] or larger)
L11+L12 200m [656ft]
L21+L22 200m [656ft]
2) Transmission line for centralized control
L31+L32(L21) 200m [656ft]
3) MA remote controller wiring
Maximum overall line length
(0.3 to 1.25mm
2
[AWG22 to 16])
m1 200m [656ft]
m2+m3 200m [656ft]
4) Maximum line distance via heat source unit
(1.25mm
2
[AWG16] or larger)
L32+L31+L12(L11) 500m [1640ft]
L32+L22(L21) 500m [1640ft]
L12(L11)+L31+L22(L21) 500m[1640ft]
L11
L21
OC
TB3
TB7
S
51
L31
ABS
L32
OS1
TB3
TB7
M1M2
S
52
OC
TB3
TB7
S
54
OS1
TB3
TB7
S
55
SW2-1 OFF ON
Move the male connector
from CN41 to CN40
Group
Group Group Group
Group Group Group
To be left
unconnected
To be left
unconnected
To be left
unconnected
To be connected
M1M2
M1M2 M1M2
M1M2
M1M2
M1M2 M1M2
M1M2
*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.
IC
TB5
S
TB
15
12
01
IC
TB5
S
TB
15
12
02
IC
TB5
S
TB
15
12
04
IC
TB5
S
TB
15
12
06
A1 B2
MA
A1 B2
MA
A1 B2
MA
IC
TB5
S
12
TB
15
IC
TB5
S
TB
15
12
0503
L12
L22
IC
TB5
S
TB
15
12
07
IC
TB5
S
TB
15
12
08
A1 B2
MA
IC
TB5
S
TB
15
12
09
IC
TB5
S
TB
15
12
10
A1 B2
MA
A1 B2
MA
BC
BC
TB02
S
53 57
TB02
M1M2
S
BS
TB02
S
BS
TB02
S
1 1 2 1 222 12
57
1 1 2 1 1
LC
TB5
S
14
323 1
Numbers in the square indicate port numbers.
Connection to BC controllers
56 59
Interlock operation with the ventilation unit
IC
TB5
S
TB
15
12
11
IC
TB5
S
TB
15
12
12
A1 B2
MA
61
BS
TB02
S
1 2
LC
TB5
S
13
12
m2
m3
m1
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
Leave the male
connector on
CN41 as it is.
System
controller
Note1
M1M2
M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2
M1M2 M1M2
M1M2
M1M2
M1M2
M1M2
M1M2
Number of transmission
booster (sold separately)
required
1 unit 2 units
When the P72 and P96 models are not in-
cluded in the connected indoor units
27 - 50
units
-
When the P72 or P96 model is included in
the connected indoor units
21 - 39
units
40 - 50
units