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1
Address setting
This system requires address setting. The range of address varies depending on the type of unit.
Refer to “(5) Examples” for details.
3
Choosing the temperature detection spot by indoor unit (Factory Setting: SWC “Standard”)
When using the suction temperature sensor, set SWC to “Option.”
4
Setting the MA “Sub” controller
When using two remote controllers or running two indoor units as a group, one of the controllers must be
set to “Sub” controller.
✻
No more than two remote controllers can be connected to a group.
(Factory setting: “Main”)
Set the controller according to the following procedure. Refer also to the instructions manual supplied with
the MA remote controller.
Factory
setting
Indoor unit
Main/sub
controllers
✻
1
Symbol
Setting method
IC
OC
00
00
Address
setting range
01~50
✻
2
51~100
✻
2
✻
3
Unit
Outdoor Unit
✻
1: 10HP only has the main controller.
✻
2: Avoid using the same address as the ones used by the indoor/outdoor units in another refrigerant system; choose a different
one in the range specified above.
✻
3: When setting the address to 100, set the switch to 50.
Assign a number to all indoor units, starting with 1 and using
sequential numbers. Use odd numbers for the top controller and
even numbers for the bottom controller of the indoor units. Use
odd numbers starting with 01 for 10HP system.
Add 50 to the address assigned to the indoor unit to which the
outdoor or heat-source unit is connected.
2
Setting the outdoor unit power-source switch connector (Factory setting: CN41 Connected)
Power supply switch unit
<When power-supply unit is not connected to the centralized control transmission line>
Replace the power source switch connector CN41 with CN40 on only one of the outdoor units
<When connecting the power-supply unit>
Use CN41 as it is.
System component
Multiple-refrigerant system
Remote controller body
Dip switches
1
ON
2
3
4
Screwdriver
Remove the cover on the remote controller
Set Dip Switch No.1 on the remote
controller to “OFF” (Main to Sub)
Insert a flat-head screwdriver in the
groove shown in the picture, and
move the screwdriver in the direction
shown in the arrow.
