Mitsubishi Electric PURY-P120Y(T)HMU-A, Service Handbook

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[
II
Restrictions ]
GB HWE0803A
[6] An Example of a System to which an M-NET Remote Controller is connected
(1) Sample control wiring
(2) Cautions
1) M-NET remote controller and MA remote controller cannot
both be connected to the same group of indoor units.
2) No more than 3 M-NET 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) 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 out-
door 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 outdoor
unit.)
Œ
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/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
(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-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
2
[AWG18-16].
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
A1 B2
RC
101
A1 B2
RC
102
A1 B2
RC
103
Group
Group
Group
Group Group
Connect
M1M2 M1M2 M1M2
M1M2 M1M2 M1M2 M1M2
L31
A B S
L32
OC
m1
TB3
TB7
M1 M2S
51
OS
TB3
TB7
M1M2
M1M2 M1M2
S
52
OC
TB3
TB7
S
55
OS
TB3
TB7
S
56
Not
Connect
Not
Connect
Not
Connect
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 220 - 240V.
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.
CN41 CN40 Replace
SW2-1 OFF ON
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
M1M2
M1M2 M1M2
M1M2 M1M2
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 and P96 models
are included in the connected in-
door units
11 - 26
units 27 - 42
units 43 - 50
units