Engineering Manual

Indoor Unit Terminal Block
1(L) 2(N)
GND
3
Outdoor Unit Terminal Block or
Branch Distribution Unit Terminal Block
(Multi F MAX Systems Only)
GND
GRN /
YLW
BR
BL
RD
3 or S
CN-REMO
YL
RD BK
Comm.
12V
Power
Ground
DUCT (LOW STATIC) INDOOR UNITS
Installation and Best Layout Practices
Controller Options
Ceiling-concealed duct (low static) indoor units include an LG-supplied wired controller
(AKB72955816)
1
, but other optional LG-supplied wired controllers are available (see
Controls and Options overview on pages 9 to 12 in this manual’s Introduction section).
The wireless handheld controller (Model No. PQWRHQ0FDB) is also an optional
accessory with use of the wired controller.
1
Simple Mode Controllers for the ceiling-concealed duct (low static) indoor units are also referenced by Model No. PQRCVCL0QW.
Figure 145:AKB72955816
1
Wired Controller.
Wired Controller
TEMP
FA N
SPEED
OPER
MODE
Operation Display
Panel
Temperature Control
Button
Fan Speed Button
On/Off Button
Mode Selection
Check Button
• Operation Display Panel: Displays operation conditions.
• Temperature Control Button: Sets desired temperature.
• Fan Speed Button: Sets desired fan speed.
• On / Off Button: Turns system operation on and off.
• Mode Selection Check Button: Selects the operation mode: Cooling, Heating, Auto,
Dry (Dehumidification), or Fan.
Figure 146:PZCWRC1 LG Wired Remote Extension Cable.
Verify the connectors are properly inserted.
C/BOX Cable (Plug type)
Extension cable
To Indoor Unit
CN-REMO
Terminal
TEMP
FAN
SPEED
OPER
MODE
Figure 147:Wired Controller Connections on the Indoor Unit
Terminal Block.
When using eld-supplied controller cable, make sure to connect
the yellow to 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.
Each function will display on the LED for about three (3) seconds when the power is rst cycled on.
Wired Controller Connections
Controllers can connect to the indoor unit in one of two different
ways.
1. LG Wired Remote Extension Cable with Molex plug (PZCWRC1;
sold separately) that connects to the CN-REMO terminal on the
indoor unit PCB.
2. Field-supplied controller cable that connects to the indoor unit
terminal block (must be at least UL2547 or UL1007, 22 AWG,
two-core, one-shield core, at least FT-6 rated if local electric and
building codes require plenum cable usage).
DUCT (LOW STATIC) | 107
Ceiling-Concealed Duct (Low Static)
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MULTI
F
MAX
MULTI
F