Mitsubishi Electric PURY-P200 Service Handbook page 36

2. System Using the M-NET Remote Controller
(1) System with the system controller connected to the transmission lines for centralized control
CN41→CN40 Replace
SW2-1 OFF→ON
Connect
Leave CN41 as it is.
SW2-1 OFF→ON
System controller
M1M2
Notes:
1. Leave SW2-1 as "OFF" when connecting LM adapter only.
2. LM adapter requires the power source of 1-phase AC 230V.
✻1.
BC and BS are found only in the R2 system.
Prohibited items
1. A group of indoor units cannot be connected to both M-NET
remote controller and MA remote controllers.
2. No more than 2 M-NET remote controllers can be connected
to a group of indoor units.
'
3. Do not connect the TB5 s (Terminal block) of the indoor
units that are connected to different outdoor units.
4. Replace CN41 (power supply switch connector on outdoor
units) on only one of the outdoor units.
5. Ground the S terminal of TB7 on only one of the outdoor
units.
6. Transmission line booster is necessary when the total
number of connected indoor units exceeds 20 (19 with 1 BC
and 18 with 1 BC and BS each).
7. Transmission line booster is necessary if the system
includes indoor units of 200 or higher and the total number
of indoor units exceeds 16 (15 with 1 BC and 14 with 1 BC
and BS each).
Control wiring example
L1 L2
Note1
OC
✻ 1
BC
51
55
TB3
TB7 TB02
M1M2 S M1M2 M1M2 S
M1M2 S
TB02
52
✻ 1
BS
L21 L22
Note1
OC
✻ 1
BC
53
54
TB3 TB02
TB7
M1M2 S M1M2 M1M2 S
NO
Note 2
S
Interlocking with ventilation
L3
Group Group
IC IC
01 02
TB5 TB15 TB5
M1M2 S M1M2 S
1 2
A1 B2 A1 B2
101 102
RC RC
L23
Group
IC IC
03 04
TB5 TB5 TB15
TB15
M1M2 S M1M2 S
1 2 1 2
A1 B2
103
RC
Allowable length
a. Indoor/outdoor transmission line
The same as 1. (3)
b. Centralized control transmission line
The same as 1. (4)
c. M-NET remote controller wiring
The same as 2. (1)
- 33 -
L4
LC
05
TB15 TB5
M1M2 S
1 2
NO
L24
LC
06
TB5
M1M2 S
– Example to use shielded wire –