LG MULTI V CE Series User manual

System
Heat Pump Indoor Unit
INSTALLATION MANUAL
LG
MODELS: CE/CF Series
Type: Floor Standing
Concealed Floor Standing
IMPORTANT
• Please read this installation manual completely before
installing the product.
• Installation work must be performed in accordance with
the national wiring standards by authorized personnel
only.
• Please retain this installation manual for future reference
after reading it thoroughly.
ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH

2Indoor Unit
Floor Standing Concealed Floor Standing Type Indoor Unit Installation Manual
TABLE OF CONTENTS
❏Four type "A" screws
❏Connecting cable
❏Pipes: Gas side
Liquid side
(Refer to Product Data)
❏Insulation materials
❏Additional drain pipe
❏Level gauge
❏Screw driver
❏Electric drill
❏Hole core drill
❏Flaring tool set
❏Specified torque wrenches
(different depending on model No.)
❏Spanner .......Half union
❏A glass of water
❏Screw driver
❏Hexagonal wrench
❏Gas-leak detector
❏Vacuum pump
❏Gauge manifold
❏Owner's manual
❏Thermometer
Safety Precautions .................3
Introduction .............................6
Installation
Selection the best location ....7
Preparation of Piping .............9
Drain piping work.................11
How to connect wirings .......12
Wiring Connection ...............12
Two Thermistor system .......15
Installation Requirements Required Parts Required Tools

Installation Manual 3
ENGLISH
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
■Be sure to read before installing the air conditioner.
■Be sure to observe the cautions specified here as they include important items related to safety.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the
following indications.
■Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
Be sure not to do.
Be sure to follow the instruction.
■Installation
Do not use a defective or under-
rated circuit breaker. Use this
appliance on a dedicated circuit.
• There is risk of fire or electric shock.
For electrical work, contact the
dealer, seller, a qualified electri-
cian, or an Authorized Service
Center.
• Do not disassemble or repair the
product. There is risk of fire or elec-
tric shock.
Always ground the product.
•Thereisriskoffireorelectricshock.
Install the panel and the cover
of control box securely.
• There is risk of fire or electric shock.
Always install a dedicated cir-
cuit and breaker.
• Improper wiring or installation may
cause fire or electric shock.
Use the correctly rated breaker
or fuse.
•Thereisriskoffireorelectricshock.

4Indoor Unit
Safety Precautions
■Operation
Do not modify or extend the
power cable.
•Thereisriskoffireorelectricshock.
Do not let the air conditioner
run for a long time when the
humidity is very high and a door
or a window is left open.
• Moisture may condense and wet or
damage furniture.
Be cautious when unpacking
and installing the product.
• Sharp edges could cause injury. Be
especially careful of the case edges
and the fins on the condenser and
evaporator.
For installation, always contact
thedealeroranAuthorized
Service Center.
• There is risk of fire, electric shock,
explosion, or injury.
Do not install the product on a
defective installation stand.
• It may cause injury, accident, or
damage to the product.
Be sure the installation area
does not deteriorate with age.
• If the base collapses, the air condi-
tioner could fall with it, causing prop-
erty damage, product failure, and
personal injury.
Do not store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
Gasolin

ENGLISH
Installation Manual 5
Safety Precautions
Alwayscheckforgas(refriger-
ant) leakage after installation or
repair of product.
• Low refrigerant levels may cause
failure of product.
Install the drain hose to ensure
that water is drained away prop-
erly.
• A bad connection may cause water
leakage.
Keep level even when installing
the product.
• To avoid vibration or water leakage.
Do not install the product where
the noise or hot air from the out-
door unit could damage the
neighborhoods.
• It may cause a problem for your
neighbors.
Use two or more people to lift
and transport the product.
• Avoid personal injury.
Do not install the product where
it will be exposed to sea wind
(saltspray)directly.
• It may cause corrosion on the product.
Corrosion, particularly on the con-
denser and evaporator fins, could
cause product malfunction or inefficient
operation.
90˚
■Installation

6Indoor Unit
Introduction
Introduction
Remote Controller
Air Outlet
Control panel
Control panel
Air Filter
Air Inlet
Air Inlet
Air filter
(At Air Inlet)
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
SymbolsUsedinthisManual
Features
[CEA/CFA Type]
[CEU/CFU Type]

ENGLISH
Installation Manual 7
Installation
Installation
Indoor unit
Install the air conditioner in the location that satisfies the fol-
lowing conditions.
•The place shall easily bear a load exceeding four times the
indoor unit’s weight.
•The place shall be able to inspect the unit as the figure.
•The place where the unit shall be leveled.
•The place shall easily connect with the outdoor unit.
•The place where the unit is not affected by an electrical
noise.
•The place where air circulation in the room will be good .
•There should not be any heat source or steam near the unit
Service space
Select an installation site where the following conditions are
satisfied and that meets with your customer's approval.
•Where the floor is strong enough to bear the indoor unit
weight.
•Where the floor is not significantly inclined.
•Where nothing blocks the air passage.
•Where condensate can be properly drained.
•Where sufficient clearance for installation and maintenance
can be ensured.
•Where there is no possibility of flammable gas leakage.
•Where optimum air distribution can be ensured.
•Where piping between indoor and outdoor units is possible
within the allowable limit (Refer to the installation manual of
the outdoor unit.)
•Keep the indoor and outdoor unit, power cable and trans-
mission wiring, at least 1m from TVs and radios, to prevent
distorted pictures and static.(Depending on the type and
source of the electrical waves, static may be heard even
when more than 1 m away.)
Selection of the best location
654
80 or more
B or more
Maintenance area
Window
A or more
20 or
more
100 or
more 100 or more
175 or
more
150 or
more
Front side
Base
Air flow
direction
Air inlet
direction
1000 or
more
Window
Name Dran
hose
Level adjustment
screw
Quantity
Shape
Insulation for
fitting Clamp [Other]
1 each.
(1) For gas pipe
(2) For liquid pipe
8 pcs.1 EA 4 •Operation
manual
•Installation
manual
[IMPORTANT]
Leave sufficient clearance
for air inlet and maintenance.
Model A B
CEU Type 788 1080
CFU Type 1066 1358
(Length: mm)
Accessories
Check the following accessories are included with
your unit.

8Indoor Unit8Indoor Unit
Installation
Bolt pitch
(Unit:mm)
CEA, CEU 858
CFA, CFU 1136
Model
A
198
A
270
(1)
(1)
(2)
(2)
(3)
How to open/close front panel
•Positioning of holes for fastening to the wall
•How to open/close the front panel
(1) Open the lid of control panel(Both left and right)
(2) Remove screws(Both left and right)
(3) Lift the front panel of the unit
•To close, perform the procedure in opposite
order.
1. Use the installationmount for installation. Check
whether the wall is strong enough to bear the
weight of the unit or not. if there is a risk, reinforce
the wall before installing the unit.
2. The unit requires a minimum 100 mm clearance on
the underside for air intake. Also, ensure the unit is
level when installed so that drainage flows smooth-
ly. If inclined, water can leak.
3. By a state of the wall, operating sound may
become bigger.

Installation Manual 9
Installation
ENGLISH
Preparation of Piping
1. Cut the pipes and the cable.
■Use the accessory piping kit or the pipes purchased
locally.
■Measure the distance between the indoor and the out-
door unit.
■Cut the pipes a little longer than measured distance.
■Cut the cable 1.5m longer than the pipe length.
2. Burrs removal
■Completely remove all burrs from the cut cross section
of pipe/tube.
■Put the end of the copper tube/pipe to downward direc-
tion as you remove burrs in order to avoid to let burrs
drop in the tubing.
3. Flaring work
■Carry out flaring work using flaring tool as shown below.
Firmly hold copper tube in a bar(or die) as indicated
dimension in the table above.
4. Check
■Compare the flared work with figure below.
■If flare is noted to be defective, cut off the flared section
and do flaring work again.
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure.
Pipe " A "
Gas Liquid Gas Liquid
<5.6(19,100) 1/2" 1/4" 0.5~0.8 0~0.5
<16.0(54,600) 5/8" 3/8" 0.8~1.0 0.5~0.8
<22.4(76,400) 3/4" 3/8" 1.0~1.3 0.5~0.8
Indoor unit
[kW(Btu/h]
Copper
tube
90°Slanted Uneven Rough
Pipe
Reamer
Point down
Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shining without scratches.
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =

10 Indoor Unit
Installation
1. Remove the cap and turn the valve counter clockwise with the hexagon wrench.
2. Turn it until the shaft stops.
Do not apply excessive force to the shutoff valve. Doing so may break the valve body, as the valve is not a
backseat type. Always use the special tool.
3. Make sure to tighten the cap securely.
1. Remove the cap and turn the valve clockwise with the hexagon wrench.
2. Securely tighten the valve until the shaft contacts the main body seal.
3. Make sure to tighten the cap securely.
* For the tightening torque, refer to the table on the below.
Precautions when connecting pipes
•See the following table for flare part machining dimensions.
•When connecting the flare nuts, apply refrigerant oil to the inside and outside of the flares and turn them three
or four times at first. (Use ester oil or ether oil.)
•See the following table for tightening torque.(Applying too much torque may cause the flares to crack.)
•After all the piping has been connected, use nitrogen to perform a gas leak check.
Tightening torque
CAUTION
•Always use a charge hose for service port connection.
•After tightening the cap, check that no refrigerant leaks are
present.
•When loosening a flare nut, always use two wrenches in
combination, When connecting the piping, always use a spanner
and torque wrench in combination to tighten the flare nut.
•When connecting a flare nut, coat the flare(inner and outer faces)
with oil for R410A(PVE) and hand tighten the nut 3 to 4 turns as
the initial tightening.
Opening shutoff valve
Closing shutoff valve
FLARE SHAPE and FLARE NUT TIGHTENING TORQUE
Shutoff
valve size
Ø6.4
Ø9.5
Ø12.7
Ø15.9
Ø22.2
Ø25.4
13.5-16.5
18-22
14-17
33-39
50-60
62-75
23-27
13.5-16.5
5.4-6.6 Hexagonal
wrench 4mm
Hexagonal
wrench 6mm
Hexagonal
wrench 10mm
8.1-9.9
27-33 36-44
-
11.5-13.9
22-28-
Tightening torque N-m(Turn clockwise to close)
Shaft(valve body)
Gas line piping attached to unit Cap(Valve lid) Service port Flare nut
90°±2
45°
±2
A
R=0.4~0.8
pipe size tightening torque(Ncm) A(mm) flare shape
Ø6.35 1400~1600 8.7~9.1
Ø9.5 3270-3990 12.8-13.2
Ø12.7 4950-6030 16.2-16.6
Ø15.9 6180-7540 19.3-19.7
Union