Mitsubishi Electric PUHY-P200 Service Handbook page 35

3. System where MA remote controller and M-NET remote controller coexist
CN41→CN40 Replace
SW2-1 OFF→ON
Leave CN41 as it is.
SW2-1 OFF→ON
Prohibited items
1. Make sure to connect the system controller.
2. M-NET and MA remote controllers can not be connected to-
gether to the indoor unit within a same group.
3. M-NET remote controller of 3 units or more can not be con-
nected to the indoor unit within a same group.
4. MA remote controller of 3 units or more can not be connected
to the indoor unit within a same group.
5. Do not connect together the terminal blocks (TB5) of the in-
door unit connected to different outdoor units.
6. Replacement of the power supply selecting connector (CN41)
on the outdoor unit should be done only on one outdoor unit.
7. Grounding work is required for S-terminal of the centralized
control transmission block (TB7) on one outdoor unit only.
8. When the total number of indoor units exceeds 20 sets, trans-
mission line booster is required.
9. When the total number of indoor units exceed 16 sets and
they include Type 200 or above, the transmission line booster
is required.
Control wiring example
L2
Note 1
Group
OC
IC
51
01
TB7 TB3 TB5 TB15
M1M2 S M1M2 M1M2 S
1 2
A1 B2
MA
Note 1 L22
Group
OC
IC
53
03
TB3 TB5
TB7 TB15
M1M2 S M1M2 M1M2 S 1 2
A1 B2
MA
Note 2
Notes:
1. Leave SW2-1 as "OFF" when connecting LM adapter only.
System controller
2. LM adapter requires the power source of 1-phase AC 230V.
A B S
L3 L4
Group
IC
02 04
TB5 TB15 TB5
M1M2 S M1M2
1 2
A1 B2
104
RC
L23 L24
Group
IC IC
05 06
TB5 TB15 TB5 TB15
M1M2 S 1 2 M1M2 S 1 2
A1 B2
105
RC
Allowable length
a. Indoor/outdoor transmission line
The same as 1. (3)
b. Centralized control transmission line
The same as 1. (4)
c-1. MA remote controller wiring
The same as 1. (1)
c-2. M-net remote controller wiring
The same as 2. (1)
- 33 -
IC
TB15
S
1 2
NO
– Example to use shielded wire –