LG MULTI V B3 Series 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 : MFL67798112
www.lg.com
TYPE : BUILT - IN DUCT - LOW STATIC
Original instruction
ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ

2Indoor Unit
Ceiling Concealed Duct - Low Static 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 of the best location
...............................................7
Ceiling opening dimension
and hanging bolt location......8
Indoor Unit Installation ..........9
Wiring Connection.................9
Part name and functions.....10
Checking the Drainage .......11
Installation of Wired Remote
Controller .............................15
Name and function of wired
remote controller(Accessory) ...17
Dip Switch Setting .................18
Group Control Setting .........19
Model Designation ..............23
Airborne Noise Emission ....23
Limiting concentration .........23
How to Set E.S.P?................24
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 electric
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 electric
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.
ENGLISH
Installation Manual 3

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, particular-
ly on the condenser and evap-
orator fins, could cause prod-
uct malfunction or inefficient
operation.
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.
ENGLISH
Installation Manual 5

Introduction
6Indoor Unit
Introduction
Wired Remote Controller
Wired Remote Controller
RemoteController
TEMP
RemoteController
TEMP
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.
Symbols Used in this Manual
Features
Built-in Duct type
Suction Grille
Suction Grille + Suction Canvas
NOTICE

Installation
Installation
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 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
Confirm the positional relationship between the
unit and suspension bolts.
• Installation the ceiling opening to clean the filter
or service under the product.
Selection of the best location
Capacity(Btu/h) A B
7/9/12/15k 600 900
18/24k 600 1100
(Length: mm)
270 or more520 or more
Inspection hole
(600 x 600)
Control box
600600
A(Min) B(Min)
Ceiling
Service Space
A
B
Built-in Duct type
• Refer to Suction grille and Suction canvas
installation manual for detail installation of
Built-in duct type
ENGLISH
Installation Manual 7

8Indoor Unit
Installation
Ceiling dimension and hanging bolt location
Installation of Unit
Install the unit above the ceiling correctly.
• Apply a joint-canvas between the unit and duct
to absorb unnecessary vibration.
• Apply a filter Accessory at air return hole.
• Install the unit leaning to a drainage hole side as
a figure for easy water drainage.
• A place where the unit will be leveled and that
can support the weight of the unit.
• A place where the unit can withstand its vibra-
tion.
• A place where service can be easily performed.
CASE 1
POSITION OF SUSPENSION BOLT
(Unit:mm)
7/9/12/15k BTU/h 850 900 383 575 93 190 21 795 163 820
18/24k BTU/h 1130 1180 383 575 93 190 21 1065 163 1100
Dimension
Capacity(Btu/h)
ABCDEFGH I J
CE
G
D
A
J
B
M10 Nut
M10 washer
X 4
X 4
M10 Nut
M10 washer
X 4
X 8
I
F
H
Drainage hole Drain Pump use
CASE 2
POSITION OF CONSOLE BOLT
B3/B4: 295
(Ceiling opening)
B4: 1118
B3: 840
(Ceiling opening)

Installation
• Select and mark the position for fixing bolts.
• Drill the hole for set anchor on the face of ceil-
ing.
• Insert the set anchor and washer onto the sus-
pension bolts for locking the suspension bolts
on the ceiling.
• Mount the suspension bolts to the set anchor
firmly.
• Secure the installation plates onto the suspen-
sion bolts (adjust level roughly) using nuts,
washers and spring washers.
1 Set anchor
Plate washer
Spring washer
Nut
Suspension
bolts
Old building New building
2
3
4
5
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
Indoor Unit Installation
B3/B4 Series
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 : Tighten the nut and bolt to
prevent unit falling.
ENGLISH
Installation Manual 9

10 Indoor Unit
Installation
Suction Grille
Suction Grille
Suction Canvas
Air outlet Air outlet
Part name and functions
nB3/B4 Series : Built-in Duct type Control Box service
• Buit-in duct type with Suction Grille. • Buit-in duct type with Suction Grille and Suction
Canvas.

Installation
1. Remove the Air Filter.
2. Check the drainage.
• Spray one or two glasses of water upon
the evaporator.
• Ensure that water flows drain hose of
indoor unit without any leakage.
Checking the Drainage
INSULATION, OTHERS
Insulate the joint and tubes completely.
All thermal insulation must comply with local requirement.
INDOOR UNIT
nAfter all workings are finished, check the working and operation.
• Air distribution ....... Is the air circulation good?
• Drain ..................... Is the drainage smoothly and no sweating?
• Gas leakage ........ Is the piping connection correctly?
• Wiring ................... Is the wiring connection correctly?
• Lock-bolt ............... Is the lock-bolt of compressor loosened?
• Insulation .............. Is the unit fully insulated?
• Ground..................Is the unit safely grounded?
THERMAL INSULATION
Make sure that there is no clearance here.
Overlap with thermal
insulator for piping.
Thermal insulator for refrigerant pipe
(Local supply) Thermal insulator for
piping(Local supply)
Hose clip for thermal insulator(Local supply)
Felt
Rubber
Insulation
No clearance
Cabinet
Thermal insulator for refrigerant pipe
(Local supply)
Hose clip for thermal insulator
(Local supply)
Union for liquid pipe
Union for gas pipe
Refrigerant pipe and thermalinsulator(Local supply)
TEST AND CHECK
ENGLISH
Installation Manual 11

12 Indoor Unit
Installation
CAUTION
Ceiling
Drain Pump use
Drainage hole
Front of view
1. Install declination of the indoor unit is very important for the drain of the duct type
air conditioner.
2. Minimum thickness of the insulation for the connecting pipe shall be 19mm.
• The unit must be horizontal or declined to the drain hose connected
when finished installation.
• Drain piping must have down-slope (1/50 to 1/100):
be sure not to provide up-and-down slope to pre-
vent reversal 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
indoor unit is 32mm.
• Be sure to install heat insulation on the drain piping.
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
• Connect the main drain pipe to the exterior and
leave it provisionally until the test comes to an
end.
• Feed water to the flexible drain hose and check
the piping for leakage.
• Be sure to check the drain pump for normal
operating and noise when electrical wiring is
complete.
• When the test is complete, connect the flexible
drain hose to the drain port on the indoor unit.
Heat insulation material: Polyethylene foam with
thickness more than 8 mm.
Drain test
Upward
routing
not allowed
Pipe clamp
Maintenance
drain port
Indoor unit
Feed water
Drain Pump
Drain pan
Flexible drain hose
Main
drain pipe
Glue the joint
Drain
port
Drain hose connection
Use the clip
Drain Piping

Installation
HAND OVER
Teach the customer the operation and maintenance procedures, using the operation manual.
(air filter cleaning, temperature control, etc.)
1/50~1/100 slope
Hanger
distance Hanger Bracket
Max 700mm
Flexible drain hose
Insulation
Metal
clamp
Max 300mm 1~15m
CAUTION : The supplied flexible drain
hose should not be curved, neither
screwed. The curved or screwed hose
may cause a leakage of water.
CAUTION:
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the
method of wiring, be guided by the circuit diagram posted on the inside of control box
cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screws 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 trans-
portation. Check them and make sure that they are all tightly fastened. (If they are
loose, it could give rise to burn-out of the wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated
voltage marked on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point, fuse breaking, disturbance by
the normal function of an overload protection device.
• Proper starting power is not given to the compressor.
Name Drain hose Clamp metal
Washer for
hanging bracket
Clamp
(Tie Wrap)
Insulation for
fitting
Quantity 1 EA 2 EA 8 EA 4 EA 1 SET
Shape
(Other)
• Owner's manual
•
Installation manual
for gas pipe
for liquid pipe
ENGLISH
Installation Manual 13

14 Indoor Unit
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
Installation
Fig.1 Typical locations for remote controller

22
1
3
3
<Wire guide grooves>
Installation
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 board’s 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.
ENGLISH
Installation Manual 15

Installation
16 Indoor Unit
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.
CAUTION

Installation
1
4
5
7
11
10
9
82
3
6
13
12
Please attach the inform label inside of the door.
Please choose proper language depend on your
country.
14
15
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 re-
mote 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
ENGLISH
Installation Manual 17

Installation
18 Indoor Unit
Dip Switch Setting
For Multi V Models, Dip switch 1, 2, 6, 8 must be set OFF.
CAUTION
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

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 can’t 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
ENGLISH
Installation Manual 19

Installation
20 Indoor Unit
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