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Mitsubishi Electric PUHY-P72 Service Manual page 38

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[ II Restrictions ]
2. An example of a system with one outdoor unit to which 2 or more LOSSNAY units are connected
(manual address setup for both indoor and outdoor units)
(1) Sample control wiring
L1
Leave the male
Leave the male
connector on
connector on
CN41 as it is.
CN41 as it is.
SW2-1 OFF
SW2-1 OFF
OS2
OS1
52
53
TB3
TB7
TB3
TB7
M1 M2
M1 M2
S
M1 M2
M1 M2
(2) Cautions
1) M-NET remote controller and MA remote controller can-
not both be connected 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) A transmission booster is required in a system to which
more than 32 indoor units (26 units if one or more indoor
units of the 72 model or above is connected) are con-
nected.
HWE0804A
L2
Leave the male
Group
connector on
CN41 as it is.
SW2-1 OFF
OC
51
TB3
TB7
S
M1 M2
M1 M2
S
L3
Group
IC
IC
01
02
TB5
TB15
TB5
M1M2
S
1 2
M1 M2
S
A B
MA
L12
Group
IC
IC
03
04
TB5
TB15
TB5
S
1 2
S
M1M2
M1M2
A B
MA
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Same as [5] 1.
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Same as [5] 1.
- 29 -
29
Interlock operation with
the ventilation unit
L4
LC
05
TB15
TB5
1 2
M1 M2
S
A B
MA
L13
LC
06
TB15
TB5
1 2
S
M1M2
GB

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