LG PQRCVSL0 User manual

INSTALLATION MANUAL
AIR CONDITIONER
• 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.
P/NO : MFL67798113
www.lg.com
TYPE : Floor Standing
Concealed Floor Standing
MAGYAR
БЪЛГАРСKN
SRPSKI
HRVATSKI SVENDKA
ENGLISH ITALIANO ESPAÑOL
FRANÇAIS
DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
PORTUGUESE

2Indoor Unit
Floor Standing Concealed Floor Standing Type Indoor Unit Installation Manual
TABLE OF CONTENTS
oFour type "A" screws
oConnecting cable
oPipes: Gas side
Liquid side
(Refer to Product Data)
oInsulation materials
oAdditional drain pipe
oLevel gauge
oScrew driver
oElectric drill
oHole core drill
oFlaring tool set
oSpecified torque wrenches
(different depending on model No.)
oSpanner.......Half union
oA glass of water
oScrew driver
oHexagonal wrench
oGas-leak detector
oVacuum pump
oGauge manifold
oOwner's manual
oThermometer
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
Installation of Wired
Remote Controller...............14
Name and function of wired
remote controller(Accessory) ...16
Dip Switch Setting ...............17
Group Control Setting .........18
Installation Requirements Required Parts Required Tools

Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be
followed.
nBe sure to read before installing the air conditioner.
nBe sure to observe the cautions specified here as they include important items related to safety.
nIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classi-
fied by the following indications.
nMeanings of symbols used in this manual are as shown below.
WARNING
CAUTION
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.
WARNING
nInstallation
Do not use a defective or
underrated circuit breaker.
Use this appliance on a dedi-
cated circuit.
• There is risk of fire or elec-
tric shock.
For electrical work, contact
the dealer, seller, a qualified
electrician, or an Authorized
Service Center.
• Do not disassemble or
repair the product. There is
risk of fire or electric shock.
Always ground the product.
• There is risk of fire or elec-
tric shock.
Install the panel and the
cover of control box securely.
• There is risk of fire or electric
shock.
Always install a dedicated
circuit and breaker.
• Improper wiring or installation
may cause fire or electric
shock.
Use the correctly rated break-
er or fuse.
• There is risk of fire or electric
shock.
Installation Manual 3
ENGLISH

4Indoor Unit
Safety Precautions
nOperation
Do not modify or extend the
power cable.
• There is risk of fire or electric
shock.
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 evapo-
rator.
For installation, always con-
tact the dealer or an
Authorized 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
conditioner could fall with it,
causing property 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.
Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge.
Do not compress air or Oxygen and Do not use Flammable gases.
Otherwise, it may cause fire or explosion.
• There is the risk of death, injury, fire or explosion.

Safety Precautions
Always check for gas (refrig-
erant) leakage after installa-
tion or repair of product.
• Low refrigerant levels may
cause failure of product.
Install the drain hose to
ensure that water is drained
away properly.
• 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 outdoor 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 (salt spray) directly.
• It may cause corrosion on the
product. Corrosion, particularly
on the condenser and evapora-
tor fins, could cause product
malfunction or inefficient opera-
tion.
CAUTION
nInstallation
If you eat the liquid from the batteries, brush your teeth and see doctor.
Do not use the remote if the batteries have leaked.
• The chemicals in batteries could cause burns or other health hazards.
Installation Manual 5
ENGLISH

Introduction
6Indoor Unit
Introduction
Remote Controller
Air Outlet
Control panel
Control panel
Air Filter
Air Inlet
Air Inlet
Air filter
(At Air Inlet)
RemoteController
TEMP
Symbols Used in this Manual
Features
[CEA/CFA Type]
[CEU/CFU Type]
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

Installation
Installation
Selection of the best location
Indoor unit
Install the air conditioner in the location that satis-
fies the following conditions.
• The place shall easily bear a load exceeding four
times the indoor unitʼs weight.
• Sufficient space should be available to inspect
the unit as in the figure shown on the right.
• The place where the unit is installed shall be lev-
eled.
• The place shall be suitable for easy connection of
the indoor unit with the outdoor unit.
• The place where the unit is installed should not
be affected by 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 con-
ditions are satisfied and that meets your cus-
tomer'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 transmission wiring, at least 1m from TVs
and radios, to prevent distorted pictures and stat-
ic.(Depending on the type and source of the elec-
trical waves, static may be heard even when
more than 1 m away.)
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
(Unit: mm)
Installation Manual 7
ENGLISH
[IMPORTANT]
Leave sufficient clearance for air
inlet and maintenance.
Type A B
CEU Type 788 1080
CFU Type 1066 1358

8Indoor Unit
Installation
Bolt pitch
(Unit:mm)
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, rein-
force 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 smoothly. If inclined, water can leak.
3. By a state of the wall, operating sound may
become bigger.
(Unit:mm)
Capacity(Btu/h) A
7/9/12/15k 858
18/24k 1136

Installation
Preparation of Piping
1. Cut the pipes and the cable.
nUse the accessory piping kit or the pipes pur-
chased locally.
nMeasure the distance between the indoor
and the outdoor unit.
nCut the pipes a little longer than measured
distance.
nCut the cable 1.5m longer than the pipe
length.
2. Burrs removal
nCompletely remove all burrs from the cut
cross section of pipe/tube.
nPut the end of the copper tube/pipe to down-
ward direction as you remove burrs in order
to avoid to let burrs drop in the tubing.
3. Flaring work
nCarry out flaring work using flaring tool as
shown below.
Firmly hold copper tube in a bar(or die) as indi-
cated dimension in the table above.
4. Check
nCompare the flared work with figure below.
nIf 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 fol-
lowing procedure.
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 =
Installation Manual 9
ENGLISH
Indoor unit
[kW(Btu/h]
Pipe " A "
Gas(mm) Liquid(mm) Gas(mm) Liquid(mm)
<5.6(19,100) 12.7 6.35 0.5~0.8 0~0.5
<16.0(54,600) 15.88 9.52 0.8~1.0 0.5~0.8
<22.4(76,400) 19.05 9.52 1.0~1.3 0.5~0.8

Installation
10 Indoor Unit
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
Opening shutoff valve
Closing shutoff valve
FLARE SHAPE and FLARE NUT 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.
Union
Pipe size Torque(kgf.m) A(mm) Flare shape
90°
± 2
45°
± 2
A
R=0.4~0.8
Shut off valve
size
Tightening torque N-m(Turn clockwise to close)
Shaft(valve body) Cap(Valve lid) Service port Flare nut Gas line piping attached to unit
Ø6.35 5.4-6.6
Hexagonal
wrench 4mm
13.5-16.5
11.5-13.9
14-17
-
Ø9.52 33-39
Ø12.7 8.1-9.9 18-22 50-60
Ø15.88 13.5-16.5
Hexagonal
wrench 6mm
23-27 62-75
Ø22.2 27-33
Hexagonal
wrench 10mm
- 22-28
Ø25.4 36-44
Ø6.35 1.8~2.5 8.7~9.1
Ø9.52 3.4~4.2 12.8-13.2
Ø12.7 5.5~6.6 16.2-16.6
Ø15.88 6.3~8.2 19.3-19.7

1. Use the heat insulation material for the refrigerant
piping which has an excellent heat-resistance
(over 120°C).
2. Precautions in high humidity circumstance:
This air conditioner has been tested according to
the "ISO Conditions with Mist" and confirmed that
there is not any default. However, if it is operated
for a long time in high humid atmosphere (dew
point temperature: more than 23°C), water drops
are liable to fall. In this case, add heat insulation
material according to the following procedure:
• Heat insulation material to be prepared... EPDM
(Ethylene Propylene Diene Methylene)-over
120°C the heat-resistance temperature.
• Add the insulation over 10mm thickness at high
humidity environment.
After inspecting pipe joints for gas leakage, be sure
to insulate wit the accessory joint insulation for fit-
ting while referrig to the figure. (Fasten both ends
with clamps)
Installation
Indoor unit
Thermal insulator
(accessory)
Fastening band
(accessory)
Insulation for fitting
(accessory)
(For liquid piped)
Insulation for fitting
(accessory)
(For gas piped)
liquid pipe
Refrigerant piping
Clamp (6)
(4 accessory)
HEAT INSULATION
Drain piping work
• Drain piping must have downward (1/50 to 1/100): be sure not to provide up-and-down slope to pre-
vent reverse flow.
• During drain piping connection, be careful not to exert extra force on the drain port on the indoor unit.
• The outside diameter of the drain connection on the inddor unit is 21mm.
• Be sure to install heat insulation on the drain piping
• If converging multiple dranin pipes, install according to the procedure shown below.
• After piping work is finished check drainage flows smothly.
• Be sure to insulate all indoor units.
Piping material: Polyvinyl chloride pipe 25mm and pipe fittings
Heat insulation material: Polyethylene foam with thickness more than 10 mm.
Slope downwards at a gradient
of at least 1/100
Installation Manual 11
ENGLISH

12 Indoor Unit
Installation
Connect the wires to the terminals on the control board individually according to the outdoor unit con-
nection.
• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of
indoor unit respectively.
Terminal Block Indoor
1(L) 2(N) 3 4
INDOOR POWER INPUT
IDU IDU
Outdoor unit Indoor unit
Central controller
SODU SODU
DRY1 DRY2 GND
INTERNET 12V
Outdoor unit
Wiring Connection
How to connect wirings
Remove the electric parts Box cover and connect the wiring
Power Supply wiring
ground wiring
(Field wiring)
Fasten with
accessory clamp Transmission wiring
(Field wiring)
Power supply wiring
ground wiring
Fasten with clamp
Transmission wiring
WARNING : Make sure that the screws of the terminal are free from looseness.
CAUTION : The Power cord connected to the unit should be selected according
to the following specifications.
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power circuit specifically for the air conditioner. As for the
method of wiring, be guided by the circuit diagram posted on the inside of control cover.
2) The screw which fasten the wiring in the casing of electrical fittings are liable to come
loose from vibrations to which the unit is subjected during the course of transportation.
Check them and make sure that they are all tightly fastened. (If they are loose, it could
cause burn-out of the wires.)
3) Specification of power source.
4) Confirm that electrical capacity is sufficient.
5) See to that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.
6) Confirm that the cable thickness is as specified in the power source specification.
(Particularly note the relation between cable length and thickness.)
7) In a wet or moist area, always install an earth leakage circuit breaker.
8) The following would be caused by voltage drop.
• Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of
the normal function of the overload.
9)
The means for disconnection from a power supply shall be incorporated in the fixed wiring and
have an air gap contact separation of at least 3mm in each active(phase) conductors.

Installation
Installation Manual 13
ENGLISH
WIERED REMOTE CONTROLLER INSTALLATION
• Since the room temperature sensor is in the remote controller, the remote controller box should be
installed in a place away from direct sunlight, high humidity and direct supply of cold air to main-
tain proper space temperature.
Install the remote controller about 5ft(1.5m) above the floor in an area with good air circulation at
an average temperature.
Do not install the remote controller where it can be affected by:
- Drafts, or dead spots behind doors and in corners.
- Hot or cold air from ducts.
- Radiant heat from sun or appliances.
- Concealed pipes and chimneys.
- Uncontrolled areas such as an outside wall behind the remote controller.
- This remote controller is equipped with a seven segment LED. display. For proper display of the
remote controller LED's, the remote controller should be installed properly as shown in Fig.1.
(The standard height is 1.2~1.5 m from floor level.)
5feet
(1.5meters)
no
no
no
yes
RemoteController
TEMP
RemoteController
TEMP
RemoteController
TEMP
Fig.1 Typical locations for remote controller

14 Indoor Unit
Installation of Wired Remote Controller
1. Please fix tightly using provided screw after placing remote controller setup board on the
place where you like to setup.
- Please set it up not to bend because poor setup could take place if setup board bends.
Please set up remote controller board fit to the reclamation box if there is a reclamation box.
2. Can set up Wired remote controller cable into three directions.
- Setup direction: the surface of wall reclamation, upper, right
- If setting up remote controller cable into upper and right side, please set up after removing remote
controller cable guide groove.
h Remove guide groove with long nose.
① Reclamation to the surface of the wall
② Upper part guide groove
③ Right part guide groove
Wall
Side
Wall
Side
Wall
Side
Wall
Side
<Connecting order>
<Separating order>
3. Please fix remote controller upper part into the
setup board attached to the surface of the wall,
as the picture below, and then, connect with
setup board by pressing lower part.
- Please connect not to make a gap at the remote
controller and setup boardʼs upper and lower, right
and left part.
When separating remote controller from setup
board, as the picture below, after inserting into
the lower separating hole using screw driver
and then, spinning clockwise, remote controller
is separated.
- There are two separating holes. Please individu-
ally separate one at a time.
- Please be careful not to damage the inside
components when separating.
Installation
22
1
3
3
<Wire guide grooves<

4. Please connect indoor unit and remote controller using connection cable.
5. Please use extension cable if the distance between wired remote controller and indoor unit is
more than 10m.
Please check if connector is normally connected.
Connecting cable
Indoor
Unit side
When installing the wired remote controller, do not bury it in the wall.
(It can cause damage in the temperature sensor.)
Do not install the cable to be 50m or above.
(It can cause communication error.)
• When installing the extension cable, check the connecting direction of the connector of the re-
mote controller side and the product side for correct installation.
• If you install the extension cable in the opposite direction, the connector will not be connected.
• Specification of extension cable: 2547 1007 22# 2 core 3 shield 5 or above.
Installation
Installation Manual 15
ENGLISH
CAUTION

16 Indoor Unit
1
4
5
7
11
10
9
82
3
6
13
12
14
15
Please attach the inform label inside of the door.
Please choose proper language depend on
your country.
Name and function of wired remote controller(Accessory)
hSome functions may not be operated and displayed depending on the product type.
hIt will display strange value to the room temperature if wired remote controller is not connected.
Model : PQRCVSL0 (Black Color)
PQRCVSL0QW (White Color)
1. Operation indication screen
2. Set temperature button
•
It will set not room temperature but outlet air temperature.
3. Fan speed button
• Fan Speed have 3 Steps.
• Middle and Low step is same
4. ON/OFF button
5. Opration mode selection button
6. Wireless remote controller receiver
• Some products don't receive the wireless signals.
7. Air flow button
8. Subfunction button
9. Function setting button
10. Ventilation button
11. Reservation
12. Up, down, left, right button
• To check the indoor temperature, press button.
13. Room temperature button
• Displays only the room temperature of the remote
controller perception.
• There is no control of room temperature.
• In case of fresh air intake unit, displays only the
temperature around remote controller.
14. Setting/Cancel button
15. Exit button
Installation

Dip Switch Setting
For Multi V Models, Dip switch 1, 2, 6, 8 must be set OFF.
Installation
Installation Manual 17
ENGLISH
Function Description Setting Off Setting On Default
SW1 Communication N/A (Default) - - Off
SW2 Cycle N/A (Default) - - Off
SW3 Group Control Selection of Master or
Slave Master Slave Off
SW4 Dry Contact
Mode
Selection of Dry Con-
tact
Mode
Wired/Wireless remote
controller
selection of Manual or Auto
operation Mode
Auto Off
SW5 Installation
Fan continuous
operation
Continuous operation Re-
moval
- Off
SW6 Heater linkage N/A - - Off
SW7
Ventilator link-
age
Selection of Ventilator
linkage Linkage Removal Working
Off
Vane selection
(Console)
Selection of up/down
side Vane Up side + Down side Vane Up side Vane Only
Region selec-
tion
Selection tropical re-
gion General model Tropical model
SW8 Etc. Spare - - Off
CAUTION

18 Indoor Unit
Installation
Group Control Setting
GND
Signal
12 V
LGAP Network System
Master Slave Slave Slave
Display Error Message Only connect serial signal and GND lines
between slave indoor unit
Master
1. Group Control 1
nWired remote controller 1 + Standard Indoor Units
1. It is possible to 16 indoor units(Max) by one wired remote controller.
Set only one indoor unit to Master, set the others to Slave.
2. It is possible to connect with every type of indoor units.
3. It is possible to use wireless remote controller at the same time.
4. It is possible to connect with Dry Contact and Central controller at the same time.
- The Master indoor unit is possible to recognize Dry Contact and Central Controller only.
- In case of Central controller and Group controller at the same time, it is possible to connect stan-
dard 2series indoor units or later since Feb. 2009.
- In case of Central controller setting, the Central controller can control indoor units after setting only
the address of master indoor unit.
- Slave indoor unit will be operated like master indoor unit.
- Slave indoor unit can not be individually controlled by Central controller.
- Some remote controller canʼt perform with Dry Contact and Central controller at the same time.
So contact us further information about it.
nDip Switch in PCB (Cassette and Duct Type indoor units)
¿Master Setting
- No. 3 Off
¡Slave Setting
- No. 3 On

Installation
Installation Manual 19
ENGLISH
GND
Signal
12 V
LGAP Network System
Master Slave Slave Slave
Display Error Message
Donʼt connect serial 12V line
Master Slave
5. In case of any error occurs at indoor unit, display on the wired remote controller.
Exception of the error indoor unit, an individual indoor unit control possibility.
6. In case of Group Control, it is possible to use following functions.
- Selection of operation options (operation/stop/mode/set temperature)
- Control of flow rate (High/Middle/Low)
- It is not possible at some functions.
hMaster/Slave setting of indoor units be set possible using a PCB Dip Switch.
h It is possible to connect indoor units since Feb. 2009.
In the other cases, please contact LGE.
h It can be the cause of malfuctions when there is no setting of master and slave.
hIt is possible to control N indoor units by wired remote controller M units. (M + N ≤ 17 Units)
Set only one indoor unit to Master, set the others to Slave.
Set only one wired remote controller to Master, set the others to Slave.
Other than those, it is same with the Group Control 1.
2. Group Control 2
nWired remote controllers + Standard Indoor Units

20 Indoor Unit
Installation
GND
Signal
12 V
LGAP Network System
Master Slave
Display Error Message
Master Master
Master
FAU
Slave
FAU
Master
FAU Standard Standard FAU FAU Standard Standard FAU
* FAU : Fresh Air Intake Unit
Standard: Standard Indoor Unit
hIn case of connecting with standard indoor unit and Fresh Intake Unit, separate Fresh Air Intake
Unit with standard units. (Because setting temperature are different.)
hOther than those, it is same with Group Control 1.
3. Group Control 3
nMixture connection with indoor units and Fresh Air Intake Unit