Mitsubishi Electric PUHY-P200 Service Handbook page 29

1. System using MA remote controller
(4) In the case of connecting system controller to centralized control transmission line
CN41→CN40 Replace
SW2-1 OFF→ON
Leave CN41 as it is.
SW2-1 OFF→ON
Prohibited items
1. M-NET and MA remote controllers can not be connected to-
gether to the indoor unit within the same group.
2. MA remote controller of 3 units or more can not be connected
to the indoor unit within the same group.
3. Do not connect together the terminal blocks (TB5) of the in-
door unit connected to different outdoor units.
4. Replacement of the power supply selecting connector (CN41)
on the outdoor unit should be done only on one outdoor unit.
5. Grounding work is required for S-terminal of the centralized
control transmission block (TB7) on one outdoor unit only.
6. When the total number of indoor units exceeds 26 units In-
cluding that above Type 200, a transmission booster is re-
quired.
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
L22
Note 1
Group
OC
IC
53
03
TB3 TB5
TB7
TB15
M1M2 S M1M2 M1M2 S
1 2
NO
A1 B2
MA
Note 2
Notes:
1. Leave SW2-1 as "OFF" when connecting LM adapter only.
System controller
A B S
2. LM adapter requires the power source of 1-phase AC 230V.
Interlocking with ventilation
L3 L4
Group
IC
02
TB5 TB15
M1M2 S M1M2
1 2
A1 B2
MA
L23 L24
IC
04
TB5 TB15
M1M2 S M1M2
1 2
Allowable length
a. Indoor/outdoor transmission line
The same as 1. (3)
b. Centralized control transmission line
Farthest length via outdoor unit (1.25mm
L32 + L31 + L2 + L3 + L4
L32 + L22 + L23 + L24
L2 + L3 + L4 + L31 + L22 + L23 + L24
c. MA remote controller wiring
The same as 1. (1)
- 27 -
LC
05
TB5
S
NO
LC
06
TB5
S
– Example to use shielded wire –
2
or more)
≤
500m
≤
500m
≤
500m