A System With Multiple Bc Controller Connections - Mitsubishi Electric PURY-P72 Service Handbook
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- Service handbook (403 pages) ,
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- Service handbook (387 pages)
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[ II Restrictions ]
6. A system with multiple BC controller connections (with a system controller connected to the centralized control line)
(1) Sample control wiring
L11
Leave the male
Move the male connector
connector on
from CN41 to CN40
CN41 as it is.
SW2-1 OFF ON
SW2-1 OFF ON
OS1
OC
BC
52
51
TB3
TB3
M1M2
M1M2
M1M2
TB7
TB7
M1M2
S
M1M2
S
To be left
unconnected
To be connected
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
OS1
OC
BC
55
54
3
TB3
TB3
M1M2
M1M2
M1M2 S
TB7
TB7
M1M2
S
M1M2
S
To be left
To be left
unconnected
unconnected
System
controller
A B S
(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 outdoor units with each other.
4)
Replacement of male power jumper connector (CN41) must be per-
formed only on one of the outdoor units.
5)
Short-circuit the S (shield) terminal of the terminal block for the cen-
tral control unit (TB7) and the ground terminal (
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 outdoor unit.)
When the P72 and P96 models are not in-
cluded in the connected indoor units
When the P72 and P96 models are includ-
ed in the connected indoor units
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).
HWE09130
Group
Group
IC
IC
IC
2
1
1
2
01
02
04
53
TB02
TB5
TB15
TB5
TB15
TB5
S
M1M2
S
1 2
M1M2
S
1 2
M1M2
S
m2
A1 B2
MA
m3
L22
Group
Group
IC
IC
IC
2
1
1
2
03
05
06
56
TB02
TB5
TB5
TB15
TB5
TB15
TB15
M1M2
S
1 2
M1M2
S
1 2
M1M2
S
1 2
m1
A1 B2
A1 B2
MA
MA
Note1
*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.
) on the outdoor
Number of transmission
booster (sold separately)
required
1 unit
2 units
27 - 50
-
units
21 - 39
40 - 50
units
units
L12
Group
BS
IC
IC
2
2
1
1
2
07
08
57
57
TB15
TB02
TB5
TB15
TB5
TB15
S
1 2
M1M2
M1M2
S
1 2
M1M2
S
1 2
A1 B2
A1 B2
MA
MA
Group
BS
IC
IC
3
1
1
1
09
10
59
TB02
TB5
TB15
TB5
TB15
M1M2
S
M1M2
S
1 2
M1M2
S
1 2
A1 B2
MA
Numbers in the square indicate port numbers.
Connection to BC controllers
Interlock operation with the ventilation unit
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Maximum distance (1.25mm
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
2
(0.3 to 1.25mm
[AWG22 to 16])
m1 200m [656ft]
m2+m3 200m [656ft]
4) Maximum line distance via outdoor unit
2
(1.25mm
[AWG16] or larger)
L32+L31+L12(L11)
L32+L22(L21)
500m [1640ft]
L12(L11)+L31+L22(L21)
- 38 -
Group
BS
LC
IC
IC
2
1
1
2
11
12
13
61
TB02
TB5
TB15
TB5
TB15
TB5
S
M1M2
M1M2
S
1 2
M1M2
S
1 2
M1M2
S
A1 B2
MA
LC
14
TB5
M1M2
S
2
[AWG16] or larger)
500m [1640ft]
500m[1640ft]
GB
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