Engineering Manual

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DUCT (HIGH STATIC) INDOOR UNITS
Using a Conduit
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control panel of the indoor unit.
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 Screw the conduit mounting plate to the indoor unit.
 Tighten the conduit and the conduit mounting plate together.
If the distance between the outdoor unit and indoor unit is greater than 131 feet, connect
the power wiring and communications cable separately (i.e., a conduit cannot be used).
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1(L1) 2(L2) 3
Power Wiring Connections
Lock nut
Conduit
mounting
plate
Conduit
Controller Options
Ceiling-concealed duct (high static) indoor units include an LG-supplied wired control-
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, but other optional LG-supplied wired controllers are available.
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cessory with use of the wired controller.
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Wired Controller
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Dry (Dehumidification), or Fan.
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cycled on.
TEMP
FA N
SPEED
OPER
MODE
Operation Display
Panel
Temperature Control
Button
Fan Speed Button
On/Off Button
Mode Selection
Check Button
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Indoor Unit Terminal Block
1(L1 ) 2 (L2)
GND
3
GRN /
YLW
BR
BL
RD
CN-REMO
YL
RD BK
Comm.
12V
Power
Ground
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Wired Controller Connections
Controllers can connect to the indoor unit in one of two different
ways.
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sold separately) that connects to the CN-REMO terminal on the
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 Field-supplied controller cable that connects to the indoor unit
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building codes require plenum cable usage).
Verify the connectors are properly inserted.
C/BOX Cable (Plug type)
Extension cable
To Indoor Unit
CN-REMO
Terminal
TEMP
FAN
SPEED
OPER
MODE
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yellow (communications wire), red to red (12V power wire), and black to black
(ground wire) terminals from the remote controller to the indoor unit terminal
blocks.
DUCT (HIGH STATIC) | 117
Ceiling-Concealed Duct (High Static)
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