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2
System with MA remote controller and G-50A
(1) System with multiple indoor units (10HP, 20HP)
Remarks
Maximum Allowable Length
Control Wiring Diagram
<a. Indoor/Outdoor transmission line>
L1, L2, L3, L4, L5, L6 200m
<b. Transmission Line for Centralized Control >
L31 + L32 + L33 + L35 + L36 + L37 + L38 + L6 500m
L1 + L31 + L35 + L36 + L37 + L38 + L6 500m
<c. MA Remote Controller Line >
Total Length (0.3 ~ 1.25mm
2
)
m1 200m
1. Be sure to use odd numbers to set the address for indoor units
(10HP).
2. To set the indoor unit address for 20HP, use odd numbers for
the top controllers and use even numbers for the bottom
controllers (Main controller plus 1).
3. Use the power supply switch connector (CN41) on the outdoor
unit as is.
4. It is not necessary to ground the S terminal of transmission line
terminal board for centralized controller on the outdoor unit.
5. No more than two main/sub remote controllers can be
connected to the indoor unit in the same group. When more
than two remote controllers are present in the system,
disconnect MA remote controller from TB15 in the indoor unit.
6. Put both types of the addresses for P500-type indoor units in
the same group when setting groups for indoor units with a
remote controller.
7. The outdoor unit cannot be connected to indoor units other
than the PFD-type ones.
NO
NO
MA
TB15
1
2
A1 B2
OC
TB3
TB7
E
A B
A B S
53
IC
MA
TB5-1
A B S
03
TB5-2
A B S
TB15
1
2
A1 B2
04
OC
TB3
TB7
E
A B
A B S
54
OC
TB3
TB7
E
A B
A B S
51
IC
TB5-1
A B S
01
L1
Use CN41 as is.
Power
Supply
A B S
G-50A
A B S
L32
L33
Option
DC power supply line
(DC12V)
L35
m1
L2
L3
m1
Use CN41 as is.
Use CN41 as is.
✻
There is one indoor controller
board inside indoor unit.
✻
There are two indoor controller
boards inside indoor unit.
L31
L36
