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External Controller - Setting up programmable digital input
operation
If you require to control depending on external digital input(ON/OFF), connect cable to indoor
PCB(CN_EXT).
Follow below procedures step 1 ~ step 4.
Step 1. Check if the power of the unit is turned off.
Step 2. Disassemble front panels and distinguish control box(Indoor) of the unit
Step 3. Connect the external controller to PCB(CN_EXT) completely.
Step 4. Connect the cable and field installation part.
Indoor PCB
Installation example #1
Indoor Unit
0.5 m
PCB
Max 10 m
Supplied Part
Field
Installation Part
• SW : Single pole switch
- Select a part with contacts
for extremely low amperage
- DC 5 V ~ 12 V is used at the
contact point
SW
- Switch load is approximately
0.5 ~ 1 mA
• Control cable
- Cable size : 22 to 26 AWG
- Don't extend the cable more
than 10 meters
ACCESSORIES INSTALLATION
CN_EXT
Installation example #2
Indoor Unit
0.5 m
PCB
Max 10 m
Relay Circuit
X
X
Supplied Part
Field Installation Part
• X : Relay (a point of contact, fixed DC 0.5 ~ 1 mA)
• SW : Distance ON/OFF switch
• Control cable (Indoor unit to Relay Circuit)
- Cable size : 22 to 26 AWG
- Don't extend the cable more than 10 meters
89
Adapter Cable
Power
SW
supply
of relay
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