
8
ENGLISH
Installation Precautions
Basic wiring diagram
Wiring diagram
1
2
R1 R2
1 2
+
-
+
-
CN6
CN2
CN5
Indoor unit
Wired remote controller
Remote controller wiring
(fi eld supply)
• No polarity
Ext output wiring
(fi eld supply)
External Relay
(fi eld supply)
Central monitor
Make sure that the polarity (+/-)
is correct before connecting.
(
+
)
(
-
)
CN6
When the refrigerant leakage alarm is to be
output externally
RC terminal
board
Ext output
terminal board
Remote controller wiring
Buzzer enable/disable switch
Enable : Buzzer is enabled
• An alarm sounds when a refrigerant leak
is detected.
Enable
Disable : Buzzer is disabled
• An alarm does not sound when a
refrigerant leak is detected.(Ext
output and the indicator LEDs operate
normally.)
Disable
■
Type of wiring
●
Use cables of 0.75 to 1.25 mm
2
(Min. 0.75 mm
2
)
■
Total wire length
: 20 m or less
■
Number of connectable units
●
Wired remote controller : 1 unit connection only
●
Indoor unit
: 1 unit connection only
●
Sensor unit
: 1 unit connection only
Ext output wiring
■
Type of wiring
●
Use cables of 0.75 mm
2
(Min. 0.75 mm
2
)
■
Total wire length
: 1.9 m or less
Correct wiring diagram
Wiring as shown below is prohibited.
R1 R2
1 2
1 2
Indoor unit
Sensor unit
Wired remote
controller
Remote
controller wiring
Wired remote
controller
R1 R2
1 2
1 2
Indoor unit
Remote
controller wiring
Sensor unit
R1 R2
R1 R2
R1 R2
1 2
1 2
Indoor unit
Indoor unit
Indoor unit
Wired remote controller
Sensor unit
Remote controller
wiring
Mounting
Mounting the bottom case
●
Tighten the screws securely until the screw heads touch the bottom case.
( Otherwise, loose screw heads may hit the PCB and cause malfunction
when mounting the top case.)
●
Do not over-tighten the screws.
( The bottom case may be deformed, resulting in the unit becoming
detached from the surface it is fi xed to.)
Connection to the terminal board
●
Depress the push button using a round bar or fi nger, insert the wiring
securely from the insertion slot and release the push button.
●
Pull the wiring lightly, and confi rm it is secured.
●
There is the danger of shorting if copper wire is exposed. Make sure the
wire is properly inserted.
Insertion slot
Push button
Terminal board
Attention