Mitsubishi Electric CITY MULTI PUHY-P108 Service Handbook page 47

[ II Restrictions ]
5. An example of an R2 system to which multiple BC controllers are connected
(a system in which a system controller is connected to the transmission line for centralized control).
CN41 CN40
Replace
L1 L2
SW2-1 OFF ON
Group
*1
OC
BC
51
2 1
52
TB3
TB7 TB02
M1M2 S M1M2 M1M2 S
Connect
Leave the male connector
on CN41 as it is.
L21 L22
SW2-1 OFF ON
*1
OC
BC
53
3 2 1
54
TB3
TB7 TB02
M1M2 S M1M2 M1M2 S
*2
System controller
M1M2 S
Don'ts
1. M-NET remote controller and MA remote controller cannot
both be connected to the same group of indoor units.
2. No more than 2 MA remote controllers can be connected to
a group of indoor units.
3. Do not connect the terminal blocks (TB5) on the indoor units
that are connected to different outdoor units with each other.
4. Replacement of male power supply switch connector
(CN41) must be performed only on one of the outdoor units.
5. Provide grounding to S terminal on the terminal block for
transmission line for centralized control (TB7) on only one of
the outdoor units.
Sample control wiring
L3 L4
Group
IC IC IC
1 2
01 02 04
TB5 TB15 TB5 TB15 TB5 TB15
M1M2 S 1 2 M1M2 S 1 2 M1M2 S 1 2
A1 B2 A1 B2
MA MA
L23 L24
Group Group
IC IC IC
1 2 3
03 05 06
TB5 TB5 TB15 TB5 TB15
TB15
M1M2 S 1 2 M1M2 S 1 2 M1M2 S 1 2
A1 B2
A1 B2
MA MA
*1 When only the LM adapter is connected, leave SW2-1 to OFF (as it is).
*2 LM adapters require the power supply capacity of single-phase AC 208/230V.
L5 L6 L7
Group
BS IC IC
2 2 1 1 2
07 08
57
TB02 TB5 TB15 TB5 TB15
M1M2 S M1M2 S 1 2 M1M2 S 1 2
A1 B2
MA
L25 L26 L27
Group
BS IC IC
4 4 4
09 10
59
TB02 TB5 TB15 TB5 TB15
M1M2 S M1M2 S 1 2 M1M2 S 1 2
A1 B2
MA
Maximum allowable length
(1) Indoor/outdoor transmission line
Maximum distance (1.25mm
L1+L2+L3+L4+L5+L6+L7+L8+L9+L10 200m [656ft]
L21+L22+L23+L24+L25+L26+L27 200m [656ft]
(2) Transmission line for centralized control
Maximum line distance via outdoor unit
2
(1.25mm [AWG16] or larger)
L32+L31+L1+L2+L3+L4
+L5+L6+L7+L8+L9+L10 500m [1640ft]
L32+L21+L22+L23+L24+L25+L26+L27 500m [1640ft]
L1+L2+L3+L4+L5+L6+L7+L8+L9+L10+L31
+L21+L22+L23+L24+L25+L26+L27 500m [1640ft]
(3) MA remote controller wiring
Same as [4] 1.
- 38 -
L8 L9 L10
Group
BS IC IC
2 1 1 2
11 12
61
TB02 TB5 TB15 TB5 TB15
M1M2 S
M1M2 S 1 2 M1M2 S 1 2
A1 B2
MA
Numbers in the indicate port numbers.
Connection to BC controllers
2
[AWG16] or larger)
NO