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Wire connection
REQUIREMENT
• Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Pass the wires through the bushing of wire connection holes of the indoor unit.
• Keep a margin (Approx. 3.9" (100 mm)) on a wire to hang down the electrical control box at servicing or other
purpose.
• The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
• Before performing wiring work in the electrical control box, remove the
cover of the box (fixed with 2 screws).
• Remove screw A, and loosen screw B.
• Pull up the electrical control box cover and then open it forward.
• Tighten the screws of the terminal block firmly, and fix the wires with
the cord clamps attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
• Slide the electrical control box cover to install it. Do not pinch the wire
too strong, and reduce the load on the wire. Make the gap as small as
possible when installing the cover.
Cord clamp
Remote controller
wiring
Ground screw
System interconnection
wire
Grounding wire
System interconnection wire
Remote controller wiring
Strip off approx. 0.4" (9 mm) the wire to be connected.
Wiring diagram
Terminal block for remote
Terminal block
controller wiring of indoor unit
Remote
controller
unit
Remote controller wire
(Locally procured)
39-EN
Electrical control
box cover
Loosen screw B.
Remove screw A.
Side D (Space: 0.3" (8.5 mm))
Side C (Space: 0.2" (4 mm))
Select side C or D for the power cable clamping position
referring to the following table according to the cable type and
diameter.
* Cable clamp can be attached on either right or left side.
When twin system are connected, clamp two cables with one
cable clamp.
Wire type
Specification
Cable clamping position
Cabtyre cable
3-core stranded wire AWG14
Side D
Cabtyre cable
4-core stranded wire AWG16
Side C
See the figure on the left for
system interconnection wires to
the terminal block.
System interconnection wire
9
Applicable controls
REQUIREMENT
When the unit is used for the first time, it takes a while for the remote controller to recognize operation input after
the power is turned on. This is not a malfunction.
Turning on the power the first time after installation
It takes approximately 10 minutes until you can operate the remote controller.
Power on
"
" blinks
About
10 minutes
Turning on the power from the 2nd time onward
It takes approximately 3 minutes until you can operate the remote controller.
Power on
"
" blinks
About
3 minutes
•
Normal settings were made when the indoor unit was shipped from factory. Change the indoor unit settings
as required.
•
Use the built-in remote controller to change the settings.
* The settings cannot be changed using the wireless remote controller, simplified wired remote controller, or
remote-control ler-less system (for central remote controller only).
Basic procedure for changing settings
Change the settings while the air conditioner is not working.
(Stop the air conditioner before making settings.)
The display content for setting differs from that on the former types of remote controller (RBC - AWSU52-UL)
CAUTION
Set only the "Code(DN)ˮ shown in the following table: Do not set any other "Code(DN)ˮ. If a "Code(DN)ˮ not listed
is set, it may not be possible to operate the air conditioner or other trouble with the product may result.
– 20 –
Remote controller can be used
"
" turns off
"
" turns off
Remote controller can be used
EN
40-EN
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