LG YBNB036AAA0 User guide

LG Ceiling Duct-Type
Fan Coil Unit

INSTALLATION MANUAL

L G

IMPORTANT

• Please read this installation manual carefully and
thoroughly before installing and operating the unit.

• Please retain this installation manual for future reference
after reading it thoroughly.

• Installation work must be performed in accordance with
the national wiring standards by authorized personnel
only.

LOW STATIC PRESSURE FCU MODELS

2 Fan Coil Unit

Fan Coil Unit Installation Manual

TABLE OF CONTENTS

FOR YOUR RECORDS

Write the model and serial numbers here:

Model #

Serial #

You can find them on a label on the side of each unit.

Dealer's Name

Date Purchased

■

Staple your receipt to this page in the event you need it

to prove date of purchase or for warranty issues.

READ THIS MANUAL

Inside you will find many helpful hints on how to use and
maintain your air conditioner properly. Just a little
preventive care on your part can save you a great deal
of time and money over the life of your air conditioner.

You'll find many answers to common problems in the
chart of troubleshooting tips. If you review our chart of

Troubleshooting Tips first, you may not need to call for
service at all.

PRECAUTION

• Contact the installer for installation of this unit.

• The unit is not intended for use by young children or
invalids without supervision.

• Young children should be supervised to ensure that
they do not play with the unit.

• When the power cord is to be replaced, replacement
work shall be performed by authorized personnel only
using only genuine replacement parts.

• Installation work must be performed in accordance
with the National Electric Code by qualified and
authorized personnel only.

Safety Precautions.................3

Care and maintenance...........8

Before you call for service ..10

Installation ............................11

Installation Manual 3

Safety Precautions

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions
must be followed.

■ 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.

Be sure not to do.

Be sure to follow the instruction.

WARNING

■ Installation

Do not use a defective or
underrated circuit breaker.
Usethisapplianceona
dedicated 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.

Always install a dedicated
circuit and breaker.

• Improper wiring or installation
may cause fire or electric shock

Use the correctly rated
breaker or fuse.

• There is risk of fire or electric
shock.

Do not modify or extend the
power cable.

• There is risk of fire or electric
shock.

WARNING

CAUTION

4 Fan Coil Unit

Do not store or use flammable
gas or combustibles near the
product.

• There is risk of fire or failure of
product.

Do not use the product in a
tightly closed space for a
long time.

• Oxygen deficiency could occur.

When flammable gas leaks, turn off
the gas and open a window for
ventilation before turn the product on.

• Do not use the telephone or turn
switches on or off.
There is risk of explosion or fire

Safety Precautions

■ Operation

Do not install, remove, or
re-install the unit by yourself
(customer).

• There is risk of fire, electric
shock, explosion, or injury.

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
evaporator.

For installation, always
contact the dealer or an
Authorized Service Center.

• There is risk of fire, electric
shock, explosion, or injury.

Do not plug or unplug the
power supply plug during
operation.

• There is risk of fire or electric
shock.

Do not touch(operate) the
product with wet hands.

• There is risk of fire or electrical
shock.

Do not place a heater or
other appliances near the
power cable.

• There is risk of fire and electric
shock.

Do not let the unit run for a long
timewhenthehumidityisveryhigh
and a door or a window is left open

.

• Moisture may condense and wet
or damage furniture.

Take care to ensure that power
cable could not be pulled out or
damaged during operation.

• There is risk of fire or electric
shock.

Do not place anything on the
power cable.

• There is risk of fire or electric
shock.

Gasolin

Installation Manual 5

Safety Precautions

If strange sounds, or small
or smoke comes from
product. Turn the breaker off
or disconnect the power
supply cable.

• There is risk of electric shock or
fire.

Stop operation and close the
window in storm or cyclone.
If possible, remove the
product from the window
before the cyclone arrives.

• There is risk of property damage,
failure of product, or electric shock.

When the product is soaked
(flooded or submerged),
contact an Authorized
Service Center.

•Thereisriskoffireorelectric
shock.

Be cautious that water could
not enter the product.

• There is risk of fire, electric shock,
or product damage.

Ventilate the product from
time to time when operating
it together with a stove, etc.

• There is risk of fire or electric
shock.

Turn the main power off
when cleaning or
maintaining the product.

•Thereisriskofelectricshock.

When the product is not be used for a long
time, disconnect the power supply plug or
turn off the breaker.

• There is risk of product damage or failure, or
unintended operation.

Safety Precautions

6 Fan Coil Unit

Installation

CAUTION

Operation

Use two or more people to lift and transport
th

e product.

• Avoid personal injury.

Do not install the product where it will be
expose

d to sea wind (salt spray) directly.

• It may cause corrosion on the product. Corrosion,
particularl

y on the condenser and evaporator fins,

coul

d cause product malfunction or inefficient

operation.

Do not expose the skin
directl

y to cool air for long
periods of time.
(Don'

t sit in the draft.)

• This could harm to your health.

Do not use the product for
specia

l purposes, such as
preserving foods, works of
art

, etc. It is a consumer air

conditioner

, not a precision

refrigeratio

n system.

• There is risk of damage or
los

s of property.

Do not block the inlet or
outle

t of air flow.

• It may cause product failure.

After installing, the water
leakage test should be
perfrmed.

• A bad connection may cause
water leakage.

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.

90°

Safety Precautions

Installation Manual 7

Use a soft cloth to clean. Do
not use harsh detergents,
solvents, etc.

• There is risk of fire, electric shock,
or damage to the plastic parts of
the product.

Do not touch the metal parts
of the product when
removing the air filter. They
areverysharp!

• There is risk of personal injury.

Always insert the filter
securely. Clean the filter
every two weeks or more
often if necessary.

• A dirty filter reduces the efficiency
of the air conditioner and could
cause product malfunction or
damage.

Do not insert hands or other
objects through the air inlet
or outlet while the product is
operated.

• There are sharp and moving parts
that could cause personal injury.

Do not drink the water
drained from the product.

• It is not sanitary and could cause
serious health issues.

Use a firm stool or ladder
when cleaning or
maintaining the product.

• Be careful and avoid personal
injury.

Thinner

Wax

Care and maintenance

8 Fan Coil Unit

B

e

n

z

e

n

e

S

C

O

U

R

I

N

G

C

L

B

A

R

G

E

R

S

I

N

N

E

R

Air filters

Air outlet vent

Indoor Unit

Caution: Before performing any maintenance, turn off the main power to the system.

Turn the system off before cleaning. To clean,
wip

e with a soft, dry cloth. Do not use bleach or

abrasives.

Note:

Suppl

y power must be disconnected before

cleanin

g the indoor unit.

Never use any of the followings:

• Water hotter than 40°C
Could cause deformation and/or
discoloration.

• Volatile substances
Could damage the surfaces
of the air conditioner.

Clean the filter with a vacuum or warm, soapy
water.

• If very dirty, wash with a solution of
detergent in lukewarm water.

After washing with water, dry well in the shade.

Re-instal

l the air filter.

Air Filter

The air filters behind Indoor unit
(th

e suction side) should be checked and cleaned

onc

e every 2 weeks or more often if necessary.

1

2

3

Care and maintenance

Air outlet vent

Air filters

Care and maintenance

Installation Manual 9

1

2

Whentheunitisnotgoingtobeusedforalongtime.

Operation Tips

Helpful information

The air filters and your electiric bill.
If the air filters become clogged with dust, the
cooling capacity will drop, and 6% of the
electricity used to operate the air conditioner will
be wasted.

When it is not going to be used for

a long time.

When the unit is to be used again.

Operate the unit on Air circulation mode for
2 to 3 hours.

• This will dry out the internal parts.

CAUTION:

Turn off the circuit
breaker when the air conditioner is not
goingtobeusedforalongtime.

Dirt may collect and may cause a fire.

■ Check that the air inlet and outlet of the
unit are not blocked.

Do not overcool the room.

This is not good for the health
and wastes electricity.

Keep blinds or curtains

closed.

Do not let direct sunshine
enter the room when the unit
is in operation.

Make sure that the doors

and windows are shut tight.

Avoid opening doors and
windows as much as possible
to keep the cool air in the
room.

Clean the air filter regularly.

Blockages in the air filter
reduce the airflow and lower
cooling and dehumidifying
effects. Clean at least once
every two weeks.

Ventilate the room

occasionally.

Since windows are kept
closed, it is a good idea to
open them and ventilate the
room now and then.

Turn off the circuit breaker.

Before you call for service...

10 Fan Coil Unit

Check the following points before requesting repairs or service.... If the malfunction persist, please contact your

dealer.

Troubleshooting Tips! Save time and money!

The unit does not operate.

The room has a peculiar odor.

Does not cool or heat effectively.

4

4, 5, 7

• Has the fuse blown or has the circuit breaker
been tripped?

• Check that this is not a damp smell exuded by
the walls, carpet, furniture or cloth items in the
room.

• Is the air filter dirty? See air filter cleaning
instructions.

• The room may have been very hot when the
unit was first turned on. Allow time for it to cool
down.

• Are the indoor unit's air inlet or outlet vents
obstructed?

Case Explanation See page

Before you call for service...

Installation

Installation Manual 11

Installation

Selection of the best location

Install the fan coil unit in the location that satisfies the
followin

g conditions.

• The place shall easily bear a load exceeding four
time

s the 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 allow easy water drainage.(Suitable
dimension

“H” is necessary to get a slope to drain as

figure.)

• The place where the unit is not affected by an
electrica

l noise.

• There should not be any heat source or steam near
th

e unit

H

600600

Top view

(unit: mm)

Front view

Front

Rear

0001

300

Confirm the positional relationship between the unit
an

d suspension bolts.

• Installation the ceiling opening to clean the filter or
servic

e under the product.

Model

DIMENSION

A B
03 530
04 530
06 530
08 530
10 530

12 530

14 530

945

1095
1295
1545
1745
1895

1995

Unit:mm

A(Min)

200

B(Min)

Ceiling

Service Space

A

B

14 Fan Coil Unit

Installation

CAUTION:

1. Install declination of the unit is very important for the drain of the duct type unit.

2. Minimum thickness of the insulation for the connecting pipe shall be 20mm.

• The unit must be horizontal or declined to the drain hose connected when finished installation.

• Always lay the drain with downward inclination
(1/5

0 to 1/100).

Preven

t any upward flow or reverse flow in any

part.

• 5mm or thicker formed thermal insulator shall
alway

s be provided for the drain pipe.

Front of view

Ceiling

CORRECT INCORRECT

CAUTION FOR GRADIENT OF
UNIT AND DRAIN PIPING

CORRECT

m
m
3-1

Lay the drain hose with a downward
inclination so

Thermal insulator
(Local supply)

Drainage pipe
(Local supply)

Drainage hole Make sure to be closed.

INCORRECT

water will drain out.

Unit

m
m
3-1

• Upward routing not
allowed

Installation Manual 15

Installation

Insulation,others

Insulate the joint and tubes completely.

THERMAL INSULATION

All thermal insulation must comply with local requirement
the thickness min 20mm.

Make sure that there is no clearance here.

Overlap with thermal
insulator for piping.

Thermal insulator for water pipe
(Local supply)

Thermal insulator for
piping(Local supply)

Hose clip for thermal insulator(Local supply)

Union for water pipe

Water pipe and thermal

insulator(Local supply)

Thermal insulator for water pipe

(Local supply)

Hose clip for thermal insulator

(Local supply)

Air exit

Connecting Cable to the Fan Coil Unit

Connect the wires to the terminals on the control board individually according to the thermostat.

• Ensure that the color of the wires of unit and the terminal No. are the same as those of unit respectively.

Wiring Diagram

38296001

WH WH

Capacitor

WH

Capacitor

WH

Capacitor

WH

Capacitor

3

WH

Capacitor

WH

WH

Capacitor

YL

4 3 2 15

6

YL

WH

YL

WH

YL

YL

WH

YL

WH

4 3 2 1

5

6

15
2

4 3

6

50/60

MED

50/60

MED

50/60

MED

16 Fan Coil Unit

Installation

The power cord connected to the unit should be
complied with the following specifications (Rubber
insulation, type H05RN-F approved by HAR or SAA).

If the supply cord is damaged, it must be replaced by a special cord or assembly availible from the manufacturer of its service agent.

CAUTION

m

m

0

2

L

Y

/

N

G

NORMAL CROSS-SECTIONAL
AREA 1.25mm

2

Install Power Cord

L 1 m

T/B Cover

CAUTION:

CAUTION:

Make sure that the screws of the terminal fixed tightly.

Prepare the wiring as follows:

1) Never fail to have an individual power specialized for the unit. As for the method of wiring, be guided by the
circuit diagram pasted on the side panel.

2) Provide a circuit breaker switch between power source and the unit.

3) 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 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 there of, fuse breaking, disturbance to the normal

function of a overload protection device.

Installation Manual 17

Installation

Checking the Drainage

Water Quality

Checking the Drainage

- Spray one or two glasses of water upon the
evaporator.

- Ensure that water flows drain hose of unit without
an

y leakage.

The standards for cooling water quality

The standards for adding water quality

Index

PH[25°C] 6.5~8.0

O O

Electric cOnductivity[25°C](µs/cm) Below 800

O O

ChlOride iOn(mgCl-/L) Below 200

O

Sulfate iOn (mgSO42-/L) Below 200

O

Acid cOnsumptiOn[PH4.8](mgCaCO3/L) Below 100

O

Calcium hardness(mgCaCO

3/L) Below 150

O

Turbidity Below 20

O O

Fe(mgFe/L) Below 1.0

O O

AmmOnium iOn(mgNH4+/L) Below 1.0

O

IOnic phases silica(mgSiO2/L) Below 50

O

SaturatiOn index 0.0~1.0

O O

Item Standards

Th

e influence of water quality

Corrosion

The formation of scale

Standard

Item

Reference

Item

Index

PH[25°C] 6.5~8.0

Electric conductivity[25°C](µs/cm) Below 200

Chloride ion(mgCl-/L) Below 50

Sulfate ion (mgSO42-/L) Below 50

Acid consumption[PH4.8](mgCaCO3/L) Below 50

Calcium hardness(mgCaCO3/L) Below 50

Turbidity Below 50

Fe(mgFe/L) Below 50

Ammonium ion(mgNH4+/L) Below 50

Ionic phases silica(mgSiO2/L) Below 50

Item Standards

Standard Item

Reference Item

Installation Manual 18

Circuit Breaker

Installation

Air

Conditioner

Main power source

Circuit Breaker
Use a circuit breake
or time delay fuse.

Use a recognized circuit breaker between the power source and the unit.
A disconnecting device to adequately disconnect all supply lines must be fitted.

Capacity of the Circuit Breaker must lie between MCA and MOP

- MCA = 1.25 x Current of Motor

- MOP = 2.25 x Current of Motor

P/No.: MFL39192001

MSZAF0200