LG MULTI F Engineering Manual page 125

F
MULTI
F
MULTI MAX
Using a Conduit
1. Remove the rubber stopper on the indoor unit. Pass the power wiring / communica-
tions cable through the conduit, the conduit mounting plate, and to / through the
control panel of the indoor unit.
2. Connect the power wiring / communications cable to the indoor unit terminal block.
3. Screw the conduit mounting plate to the indoor unit.
4. 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).
Controller Options
Ceiling-concealed duct (high static) indoor units include an LG-supplied wired control-
ler (AKB72955816) , but other optional LG-supplied wired controllers are available
1
(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.
• 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.
Each function will display on the LED for about three (3) seconds when the power is first
cycled on.
Simple Mode Controllers for the ceiling-concealed duct (high static) indoor units are also referenced by Model No. PQRCVCL0QW.
1
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).
When using field-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.
DUCT (HIGH STATIC) INDOOR UNITS
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Installation and Best Layout Practices
Control Box Cover
Figure 174:Exterior View of Conduit Installation.
Wired Controller
Figure 175:AKB72955816
SPEED
TEMP
Figure 176:PZCWRC1 LG Wired Remote Extension Cable.
Verify the connectors are properly inserted.
FAN
SPEED
TEMP
OPER
MODE
Figure 177:Wired Controller Connections on the Indoor Unit Terminal
Block.
CN-REMO
Indoor Unit Terminal Block
RD BK
YL
1(L1 ) 2 (L2)
12V
Power Ground
Comm.
Terminal Block
Control Box
Lock nut
Conduit
1(L1) 2(L2)
Power Wiring Connections
Wired Controller.
1
FA N
OPER
MODE
C/BOX Cable (Plug type)
To Indoor Unit
CN-REMO
Terminal
Extension cable
Branch Distribution Unit Te
GND
3
DUCT (HIGH STATIC) | 125
A
Conduit
mounting
plate
3
Outdoor Unit Terminal
(Multi F MAX System
3 o