Examples Of System Connection - Mitsubishi Electric PUHY-P200 Service Handbook

[3] Examples of system connection

1. System using MA remote controller
(1) In the case of single refrigerant system (Automatic address set-up)
OC
00
TB3
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.
4. In the case when start/stop input (CN32, CN51, CN41) is used
by indoor group operation, the "Automatic address set-up"
can not be employed. Please refer to 1. (2) " Manual address
set-up."
5. For the connection of LOSSNAY with more than 2 units in a
single refrigerant system, refer to the following "Connection
of 2 LOSSNAY units in refrigerant system."
Control wiring example
L2
Group
IC
00
TB5 TB15
M1M2 S
1 2
A1 B2
MA
Group
IC
00
TB5 TB15
M1M2 S 1 2
A1 B2
A1 B2 A1 B2
NO
MA
MA MA
a. Indoor/outdoor transmission line
b. Centralized control transmission line
c. MA remote controller wiring
- 21 -
L3 L4
Group
IC
00
TB5 TB15
M1M2 S
1 2
A1 B2
A1 B2
NO
RC MA
L12 L13
Group
IC
00
TB5 TB15
M1M2 S 1 2
A1 B2
MA
– Example to use shielded wire –
Allowable length
Farthest length (1.25mm 2 or more)
≤
L2 + L3 + L4 200m
≤
L2 + L11 + L12 + L13 200m
No connection is required.
Total length (0.3 ~ 1.25mm 2 )
≤
m1 200m
≤
m2 + m3 200m
≤
m4 + m5 200m
Note 1. For the connection to the terminal block of compact
remote controller, employ wire with a diameter of 0.75
~ 1.25mm 2
Interlocking with ventilation
LC
00
TB5
M1M2 S
IC
00
TB5 TB15
M1M2 S 1 2
m3