An Example Of A System To Which An Ma Remote Controller Is Connected - Mitsubishi Electric CITY MULTI PUHY-P108 Service Handbook

[ II Restrictions ]

[4] An Example of a System to which an MA Remote Controller is connected

1. System with one outdoor unit (automatic address setup for both indoor and outdoor units)
In the case of Y
M1M2 S
In the case of R2
OC
00
TB3
TB7
M1M2 S M1M2
*1 BC and BS are found only in the R2 system.
When BS is connected to the system, automatic address setup is not available.
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. A transmission booster must be connected to a system to
which more than 26 indoor units including one or more in-
door units of 72 model or above are connected.
4. Automatic address setup is not available if start-stop input
(CN32, CN51, CN41) is used for a group operation of indoor
units, or if a sub BC controller is connected to the system.
Refer to "[4] 2. Manual address setup for both indoor and
outdoor units".
5. To connect more than 2 LOSSNAY units to indoor units in
the same system, refer to the next section "[4] 2. An example
of a system with one outdoor unit to which 2 or more LOSS-
NAY units are connected".
Sample control wiring
L2
Group
OC
00
TB7 TB3 TB5
M1M2
M1M2 S
L1 L2
*1 BC
00
TB02
Group
M1M2 S
TB5
M1M2 S
*1
M1M2 S
NO
TB02
00 A1 B2
A1 B2
NO
BS
MA
MA
Interlock operation with
the ventilation unit
L3 L4
Group
IC IC
00 00
TB15 TB5 TB15
1 2 M1M2 S 1 2
A1 B2 A1 B2 A1 B2
NO
MA RC MA
L12 L13
Group
IC IC
00 00
TB15 TB5 TB15
1 2 M1M2 S 1 2
A1 B2 A1 B2
MA MA
Maximum allowable length
(1) Indoor/outdoor transmission line
Maximum distance (1.25mm
(L1)* +L2+L3+L4 200m [656ft]
(L1)* +L2+L12+L13 200m [656ft]
*L1 is applicable only in the R2 system.
(2) Transmission line for centralized control
No connection is required.
(3) MA remote controller wiring
Maximum overall line length
2
(0.3 to 1.25mm [AWG22 to 16])
m1 200m [656ft]
m2+m3 200m [656ft]
m4+m5 200m [656ft]
When connected to the terminal block on the MA simple remote
controller, use cables that meet the cable size specifications
2
0.75-1.25mm [AWG18 to 14].
- 24 -
LC
00
TB5
M1M2 S
IC
00
TB5 TB15
M1M2 S 1 2
m3
2
[AWG16] or larger)