(1) Address setting
21
7-3.Types of switch settings and setting methods
Whether a particular system requires switch settings depends on its components. Refer to the section
“7-4 Sample System Connection” before conducting electrical work.
Keep the power turned off while setting the switches. If settings are changed while being powered, the
changed settings will not register, and the unit may malfunction.
Symbol
Outdoor unit
OC
Indoor unit
✻
10HP has only the main controller
Main/sub controllers
✻
IC
Turn off the power to
Outdoor unit
Indoor and outdoor units
Unit
2
Remote control wiring
MA remote controller
✻
1
No. of cable
2-core cable
Diameter
0.3~1.25mm
2
(0.75~1.25mm
2
)
✻
2
✻
3
Wiring specifications
VCTF · VCTFK · CVV · CVS · VVR · VVF · VCT
Maximum length: 200 m
Total Length
✻
1: “MA remote controller” includes MA remote controller, Simple MA controller, and wireless remote controller.
✻
2: Cables with a diameter of 0.75mm
2
or smaller recommended for easier handling.
✻
3: When connecting to Simple MA controller terminal, use a cable with a diameter within the range shown in
the parenthesis.
Cable type
The need for address settings and the range of address setting depend on the configuration of the sys-
tem. Refer to “Sample System Connection”.
Symbol
Unit or controller
Main · Sub
Indoor unit
MA remote controller
Address
setting range
IC
01~50
(Note 1)
Address setting method
Factory setting
No address setting required.
00
00
MA
Outdoor unit
OC
Main
51~100
Model
In case of 10HP system or 20 HP system with one
refrigerant circuit, assign an odd number starting with "01".
In case of 20HP system with two refrigerant circuits, assign
a sequential odd number starting with "01" to the upper
indoor controller, and assign "the address of the upper
indoor cont 1" to the lower indoor controller.
(For the system with one refrigerant circuit, the lower circuit
board is not used.)
Add 50 to the address assigned to the indoor unit connected
the system with one outdoor unit.
(The main/sub switch must be configured if
two remote controllers are connected to the
system or if the indoor units are connected
to different outdoor units.)
(Note1) If a given address overlaps any of the addresses that are assigned to other outdoor units, use a different, unused address
within the setting range.
