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ELECTRICAL CONNECTIONS
Controller Options
Single Zone Four-Way Ceiling Cassette systems include a wireless handheld remote controller (For 9K, 12K, 18K
Systems: Part No. AKB73757604, Model No. PQWRHQ0FDB; For 24, 36, 42K Systems: AKB75735404). Optional
LG-suppled wired controllers are available. See "Functions, Controls, Options", or contact an LG representative
for more information.
Wireless Handheld Remote Controller features:
• Display Panel: Displays operation conditions.
• On / Off Buttons: Turns system operation on and off.
• Mode Button: Selects the operation mode: Cooling, Heating, Auto, Dry (Dehumidification), or Fan.
• Temp Up / Down Buttons: Adjusts the desired room temperature in the different modes.
• Fan Speed Button: Sets desired fan speed.
• Reset: Initializes the handheld remote control settings.
Wired Controller Connections
Optional controllers (see "Functions, Controls, Options", or contact an LG representative for more information) can
connect to the Four-Way Ceiling Cassette 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, and at least FT-6 rated if local electric and building codes require plenum cable usage). Communication cable from indoor unit to
remote controller(s) is to be 22 AWG, 3-conductor, twisted, stranded, unshielded. Wiring must comply with all applicable local and national
codes.
Figure 33: PZCWRC1 LG Wired Remote Extension Cable.
Verify the connectors are properly inserted.
FAN
SPEED
TEMP
OPER
MODE
Wired Controller Placement
Wired controllers include a sensor to detect room temperature. To maintain comfort
levels in the conditioned space, the wired controller must be installed in a location away
from direct sunlight, high humidity, and where it could be directly exposed to cold air.
Controller must be installed four (4) to five (5) feet above the floor where its LED display
can be read easily, in an area with good air circulation, and where it can detect an
average room temperature.
Do not install the wired controller near or in:
• Drafts or dead spots behind doors and in corners.
• Hot or cold air from ducts.
• Radiant heat from the sun or appliances.
• Concealed pipes and chimneys.
• An area where temperatures are uncontrolled, such as an outside wall.
Assigning the Thermistor for Temperature Detection
Each indoor unit includes a return air thermistor assigned to sense the temperature. If a wired controller is installed, there is a choice
of sensing temperature with either the indoor unit return air thermistor or the thermistor in the wired controller. It is also an option to set
both thermistors to sense temperature so that indoor unit bases its operation on the first thermistor to reach the designated temperature
differential.
42 | PRODUCT DATA
C/BOX Cable (Plug type)
To Indoor Unit
CN-REMO
Terminal
Extension cable
©
Figure 34: Wired Controller Connection (Example Only).
Indoor Unit Terminal Block
GND
1(L1 ) 2(L2)
3
Figure 35: Proper Location for the Wired Controller.
TEMP
ot e
Cont
roller
Rem
NO
Figure 32: AKB73757604
(PQWRHQ0FDB) Wireless
Handheld Remote Con-
troller.
CN-REMO
YES
TEMP
Remote Controlle r
NO
TEMP
Remote Controlle r
NO
4 to 5 feet
above the floor
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