Mitsubishi Electric PUHY-(E)P200 Service Handbook page 45

[ II Restrictions ]
5. An example of a system in which a system controller is connected to the indoor-outdoor transmission line (except
LM adapter)
(1) Sample control wiring
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS2
53
TB3
M1 M2
TB7
S
M1 M2
Not
Connect
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS2
56
TB3
M1 M2
TB7
M1 M2 S
Not
Connect
(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) 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 performed only on one of the outdoor units.
5) Provide grounding to S terminal on the terminal block for
transmission line for centralized control (TB7) on only
one of the outdoor units.
6) A maximum of 3 system controllers can be connected to
the indoor-outdoor transmission line, with the exception
that only one G(B)-50A may be connected.
7) When the total number of indoor units exceeds 26, it may
not be possible to connect a system controller on the in-
door-outdoor transmission line.
8) In a system to which more than 18 indoor units including
one or more indoor units of 200 model or above are con-
nected, there may be cases in which the system control-
ler cannot be connected to the indoor-outdoor
transmission line.
HWE07010
L11
CN41 CN40 Replace
Leave the male
connector on
SW2-1 OFF ON
CN41 as it is.
SW2-1 OFF ON
OS1 OC
52 51
TB3 TB3
M1 M2 M1 M2
TB7 TB7
S S
M1 M2 M1 M2
Not
Connect
Connect
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
55 54
TB3 TB3
M1 M2 M1 M2
TB7 TB7
M1 M2 S M1 M2
S
Not
Connect
Not
Connect
L12
Group Group
IC IC
01 02
TB5 TB15 TB5
M1 M2 S 1 2 M1 M2 S
A B
MA
L22
Group
IC IC
04 05
TB5 TB5 TB15
TB15
M1 M2 S 1 2 M1 M2 S 1 2
A B
MA
m3
Note1
Note1 LM adapters cannot be connected to the
indoor-outdoor transmission line.
System controller
A B S
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Maximum distance (1.25mm
L11+L12 200m [656ft]
L21+L22 200m [656ft]
L25 200m [656ft]
2) Transmission line for centralized control
Maximum line distance via outdoor unit
2
(1.25mm [AWG16] or larger)
L25+L31+L12(L11) 500m [1640ft]
L12(L11)+L31+L22(L21) 500m [1640ft]
3) MA remote controller wiring
Same as [5] 1.
- 36 -
Interlock operation with
the ventilation unit
Group
IC
03
TB15 TB5 TB15 TB5
1 2 M1 M2 S 1 2 M1 M2
A B A B
MA MA
Group
LC
IC
08
06
TB5
TB5 TB15
M1 M2 S
M1 M2 S 1 2
A B
MA
2
[AWG16] or larger)
LC
07
S
GB