Mitsubishi Electric PUHY-P200 Service Handbook page 25

1. System using MA remote controller
(2) In the case of single refrigerant system connecting 2 or more LOSSNAY units (Manual address set-up)
OC
51
TB7
M1M2 S M1M2
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. 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
Group
IC
01
TB3
TB5
M1M2 S
Group
IC
03
TB5
M1M2 S
L3
Group
IC
02
TB15 TB5 TB15
M1M2 S
1 2 1 2
A1 B2 A1 B2
MA MA
L12
IC
04
TB15 TB5 TB15
M1M2 S
1 2 1 2
A1 B2
MA
a. Indoor/outdoor transmission line
The same as 1. (1)
b. Centralized control transmission line
No connection is required.
c. MA remote controller wiring
The same as 1. (1)
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Interlocking with ventilation
L4
LC
05
TB5
M1M2 S
L13
LC
06
TB5
M1M2 S
– Example to use shielded wire –
Allowable length