28
(1) System Using MA Remote Controller
Remarks
Maximum Allowable Length
Control Wiring Diagram
NO
<a. Indoor/Outdoor Transmission Line >
Same as (2).
<b. Transmission Line for Centralized Control >
Same as (2).
<c. MA Remote Controller Line >
Total Length (0.3 ~ 1.25mm
2
)
m1 + m2 + m3 + m4 + m5 200m
MA(Main)
TB15
1 2
A1 B2
OC
TB3
TB7
E
A B
A B S
53
IC
MA(Sub)
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
L31
m3
m1
✻
There are two indoor controller
boards inside indoor unit.
L1
L2
m2
Use CN41 as is.
Replace CN41 with CN40.
✻
There is one indoor controller
board inside indoor unit.
Connect
1. Use odd numbers to set 10HP indoor unit address.
2. When setting unit address for 20HP indoor unit, use
odd numbers for the top controllers and even
numbers for the bottom controllers (main con1).
3. Replace CN41 (power supply switch connector) with
CN40 on only one 20HP outdoor unit.
4. Ground the S terminal of TB7 (centralized control
transmission terminal board) of only one of the 20HP
outdoor units.
5. No more than two main and sub controllers can be
connected to the indoor unit in the same group.
Disconnect the MA remote control wire from TB15 if
using more than 2 remote controllers
5
When grouping multiple indoor units (combination of 10HP, 20HP systems)