LG A9UW56LFA0 INSTALLATION MANUAL

INSTALLATION MANUAL

AIR
CONDITIONER

www.lg.com

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.

MULTI
Original instruction

MFL67452301

Rev.00_100818

Copyright © 2012 - 2018 LG Electronics Inc. All Rights Reserved.

ENGLISH

ESPAÑOL

2

TIPS FOR SAVING ENERGY

ENGLISH

• Do not cool excessively indoors. This may be harmful to your health and may consume more
electricity.

• Block sunlight with blinds or curtains while you are operating the air conditioner.

• Keep doors or windows closed tightly while you are operating the air conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period of time.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air
conditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them labeled on the side of each unit.

Dealer’s name :

Date of purchase :

Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:

TIPS FOR SAVING ENERGY

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

3

IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product

WARNING

It can result in serious injury or death when the directions are ignored

CAUTION

It can result in minor injury or product damage when the directions are ignored

WARNING

• Installation or repairs made by unqualified persons can result in hazards to you and others.

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

• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments.

• Failure to carefully read and follow all instructions in this manual can result in equipment
malfunction, property damage, personal injury and/or death.

Installation

• Do not use a defective or underrated circuit breaker. Use the correctly rated breaker and fuse.
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 by yourself. There is risk of fire or electric
shock.

• Always ground the product as per the wiring diagram. Do not connect the ground wire to gas
or water pipes lightening rod or telephone ground wire. 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
due to dust , water etc.

• Use the correctly rated breaker or fuse. There is risk of fire or electric shock.

• Do not modify or extend the power cable. If the power cable or cord has scrathes or skin
peeled off or deteriorated then it must be replaced. There is risk of fire or electric shock.

• For installation, removal or reinstall , always contact 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. Be sure that the installation area
does not deteriorate with age. It may cause product to fall.

• Never install the outdoor unit on a moving base or a place from where it can fall down.
The falling outdoor unit can cause damage or injury or even death of a person.

• In outdoor unit the step-up capacitor supplies high voltage electricity to the electrical
components. Be sure to discharge the capacitor completely before conducting the repair
work.
An charged capacitor can cause electrical shock.

• When installing the unit, use the installation kit provided with the product. Otherwise the unit
may fall and cause severe injury.

• Indoor/outdoor wiring connections must be secured tightly and the cable should be routed
properly so that there is no force pulling the cable from the connection terminals. Improper or
loose connections can cause heat generation or fire.

!

!

!

4

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

• Safely dispose off the packing materials. Like screws, nails, batteries, broken things etc after
installation or svc and then tear away and throw away the plastic packaging bags. Children
may play with them and cause injury.

• Be sure to check the refrigerant to be used. Please read the label on the product. Incorrect
refrigerant used can prevent the normal operation of the unit.

Operation

• When the product is soaked (flooded or submerged) in water , contact an Authorized Service Center
for repair before using it again. There is risk of fire or eletric shock.

• Be sure to use only those parts which are listed in the svc parts list. Never attempt to modify the
equipment. The use of inappropriate parts can cause an electrical shock, excessive heat generation
or fire.

• Do not touch , operate, or repair the product with wet hands. Hold the plug by hand when taking
out. There is risk of electric shock or fire.

• Do not place a heater or other heating appliances near the power cable. There is risk of fire and
electric shock.

• Do not allow water to run into electric parts. Install the unit away from water sources. There is risk
of fire, failure of the product, or electric shock.

• Do not store or use or even allow flammable gas or combustibles near the product. There is risk of
fire.

• Do not use the product in a tightly closed space for a long time. Perform ventilation regularly.
Oxygen deficiency could occur and hence harm your health.

• Do not open the front grille of the product during operation. (Do not touch the electrostatic filter, if
the unit is so equipped.) There is risk of physical injury, electric shock, or product failure.

• If strange sound, smell or smoke comes from product.Immediately turn the breaker off or
disconnect the power supply cable. There is risk of electric shock or fire.

• Ventilate the product room from time to time when operating it together with a stove, or heating
element etc. Oxygen deficiency can occur and hence harm your health.

• When the product is not to 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.

• Take care to ensure that nobody especially kids could step on or fall onto the outdoor unit. This
could result in personal injury and product damage.

• 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.

• When flammable gas leaks, turn off the gas and open a window for ventilation befor turning on the
product. Do not use the telephone or turn switches on or off. There is risk of explosion or fire.

CAUTION

Installation

• Two or more people must 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.

• Install the drain hose to ensure that the condensed water is drained away properly. A bad
connection may cause water leakage.

• Keep level even when installing the product. To avoid vibration or noise.

• Do not install the product where the noise or hot air from the outdoor unit could damage or disturb
the neighborhoods. It may cause a problem for your neighbors and hence dispute.

!

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

5

• Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant
levels may cause failure of product.

• Please install safely at a place that can sufficiently endure the weight of the product.
(If the strength is not sufficient, the product may fall and cause injury.)

Operation

• Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a
consumer air conditioner, not a precision refrigeration system. There is risk of damage or loss of
property.

• Do not block the inlet or outlet of air flow. It may cause product failure.

• Use a soft cloth to clean. Do not use harsh detergents, solvents or splashing water 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. There is risk of personal
injury.

• Do not step on or put anyting on the product. (outdoor units) There is risk of personal injury and
failure of product.

• Always insert the filter securely after cleaning. Clean the filter every two weeks or more often if
necessary. A dirty filter reduces the efficiency.

• Do not insert hands or other objects through the air inlet or outlet while the product is operating.
There are sharp and moving parts that could cause personal injury.

• Be cautious when unpacking and installing the product. Sharp edges could cause injury.

• If the refrigerant gas leaks during the repair, do not touch the leakaing refrigerant gas. The
refrigernat gas can cause frostbite (cold burn).

• Do not tilt the unit when removing or uninstalling it. The condensed water inside can spill.

• Do not mix air or gas other than the specified refrigerant used in the system. If air enters the
refrigerant system, an excessively high pressure results, causing equipment damage or injury.

• If the refrigerant gas leaks during the installation, ventilate the area immediately. Otherwise it can be
harmfull for your health.

• Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in
accordance with local and national standards.

• Replace the all batteries in the remote control with new ones of the same type. Do not mix old and
new batteries or different types of batteries. There is risk of fire or product failure.

• Do not recharge or disassemble the batteries. Do not dispose off batteries in a fire. They may burn
or explode.

• If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not
use the remote if the batteries have leaked. The chemicals in batteries could cause burns or other
health hazards.

• 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.

• 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.

• Do not expose your skin or kids or plants to the cool or hot air draft. This could harm to your health.

• 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, maintaining or repairing the product at an height. Be
careful and avoid personal injury.

6

TABLE OF CONTENTS

ENGLISH

2

TIPS FOR SAVING ENERGY

3

IMPORTANT SAFETY INSTRUCTIONS

7

INSTALLATION

8

INSTALLATION OF INDOOR, OUTDOOR UNIT

8 Select the best location
9 Fixing Installation Plate
10 Piping length and elevation
11 Refrigerant charge
12 Preparing work for Installation (ART COOL Type Only)
13 Sticking the installation guide map and fixing Indoor unit (ART COOL Type Only)
14 Drill a hole in the wall

15

INSTALLATION OF WIRED REMOTE CONTROLLER

17 Wired remote controller installation

18

FLARING WORK AND CONNECTION OF PIPING

18 Flaring work
19 Connection of piping - Indoor
21 Connection of piping - Outdoor
24 Installation
25 Installation of The Main Unit

26

CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT

26 Connect the cable to the Indoor unit
28 Connect the cable to the Outdoor unit
30 Connection of Wiring

31

CHECKING THE DRAINAGE AND FORMING THE PIPINGS

31 Checking the Drainage
32 Forming the Piping

33

AIR PURGING AND EVACUATION

33 Checking method
34 Evacuation

35

PANEL FRONT ASSEMBLY (ART COOL TYPE ONLY)

36

INSTALLATION PI485

37

TEST RUNNING

38

FUNCTION

38 Dip S/W Setting
39 Forced Cooling Operation
40 Wiring Error Check
40 Saving Power Consumption
41 Night Quiet Mode
42 Mode Lock
43 PCB Display(14/16/18/21k Model Only)

44

MAX COMBINATION CAPACITY

45

INSTALLATION GUIDE AT THE SEASIDE

46

SEASONAL WIND AND CAUTIONS IN WINTER

TABLE OF CONTENTS

INSTALLATION

ENGLISH

7

Installation plate

Type "B" screws

Type "A" screw (6 EA) Type "A" screw (8 EA) Type "A" screw (7 EA)

Holder Remote Control

Type "A" screw and plastic anchors

Figure FigureName

Screw driver

Electric drill

Measuring tape, Knife

Hole core drill

Spanner

Torque wrench

Multi-meter

Hexagonal wrench

Ammeter

Gas-leak detector

Thermometer,

Level

Flaring tool set

Name

Installation Parts

Installation Tools

INSTALLATION

8

INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

Read completely, then follow step by step.
You need to select adequate installation location

considering the following conditions, and make
sure to acquire the consent of the user.

Select the best location

1 Do not have any heat or steam near the

unit.

2 Select a place where there are no

obstacles in front of the unit.

3 Make sure that condensation drainage can

be conveniently routed away.

4 Do not install near a doorway.
5

Ensure the spaces indicated by arrows from
the wall, ceiling, fence or other obstacles.

6 Use a stud finder to locate studs to

prevent unnecessary damage to the wall.

• If an awning is built over the unit to prevent
direct sunlight or rain exposure, make sure
that heat radiation from the condenser is not
restricted.

• Ensure that the spaces indicated by arrows
around front, back and side of the unit.

• Do not place animals and plants in the path
of the warm air.

• Take the air conditioner weight into account
and select a place where noise and vibration
are minimum.

• Select a place so that the warm air and
noise from the air conditioner do not disturb
neighbors.

• Place that can sufficiently endure the weight
and vibration of the outdoor unit and where
even installation is possible.

• Place that has no direct influence of snow or
rain

• Place with no danger of snowfall or icicle
drop

• Place without weak floor or base such as
decrepit part of the building or with a lot of
snow accumulation

If the outdoor unit is installed on a roof
structure, be sure to level the unit. Ensure the
roof structure and anchoring method are
adequate for the unit location. Consult local
codes regarding rooftop mounting.

Indoor unit

Rooftop Installations

More than 20 cm

More than

10 cm

More than 2.3 m

More than

10 cm

More than 20 cm

More than

10 cm

More than 2.3 m

More than

10 cm

More than 20 cm

More

than 50 cm

More than 1.5 m

More

than 50 cm

More than 20 cm

More than

10 cm

More than 2.3 m

More than

10 cm

more than

70 cm

more than

30 cm

more than

30 cm

more than

60 cm

more than 60 cm

more than

70 cm

more than

30 cm

more than 60 cm

more than

30 cm

more than

60 cm

Outdoor unit

INSTALLATION OF INDOOR, OUTDOOR UNIT

Install the indoor unit on the wall where
the height from the floors more than 2.3
meters. (ART COOL Type Only 1.5 m)

CAUTION

!

INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

9

Fixing Installation Plate

The wall you select should be strong and solid
enough to prevent vibration

1 Mount the installation plate on the wall

with type "A" screws. If mounting the unit
on a concrete wall, use anchor bolts.

- Mount the installation plate horizontally
by aligning the centerline using a level.

<Type 1>

2 Measure the wall and mark the centerline.

It is also important to use caution
concerning the location of the installation
plate-routing of the wiring to power outlets
is through the walls typically. Drilling the
hole through the wall for piping
connections must be done safely.

<Type 2>

<Type 3>

<Type 4>

<Type 1>

<Type 2>

<Type 3>

<Type 4>

Chassis

Hook

Installation Plate

Type “A”

Installation Plate

Type “A”

Chassis

Hook

Installation Plate

Type “A”

Chassis

Hook

Installation Plate

Type “A”

Indoor Type

Capacity

(kBtu/h)

Type

Wall mounted

/ART COOL

Mirror

7,9,12 1,3

18, 24 2,4

Installation plate

Left rear piping Right rear piping

Ø 70 mm

Ø 70 mm

105 mm

105 mm

65 mm

55 mm

45 mm

140 mm

Ø 70 mm

65mm65mm

65 mm

45 mm

Ø 70 mm

Installation plate

Left rear piping Right rear piping

Installation plate

Left rear piping Right rear piping

Ø 70 mm

133 mm

101 mm

101 mm

Ø 70 mm

100 mm

Unit
Outline

Left Rear
Piping

Right Rear
Piping

Place a level on raised tab

(Unit : mm )

Installation plate

Ø 65

Ø 65

184

220

156

307

765064

10

INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

Piping length and elevation

Multiple Piping Models (Unit: m)

Distributor type Models (Unit: m)

Phase Capacity(kBtu/h) Total Length Max Length(A/B)

Max Elevation

(h1)

In - In Elevation

(h2)

1 Ø

14/16 30 20 15 7.5

18 50 25 15 7.5
21 50 25 15 7.5

24/27 70 25 15 7.5

30 75 25 15 7.5
40 85 25 15 7.5

Phase

Capacity

(kBtu/h)

Total

Length

Max Main Pipe

Length (A/B)

Total Branch

Pipe Length

Max Branch
Pipe Length

Max Elevation

(h1)

In - In

Elevation (h2)

1 Ø

40 100 50 50 15 30 15
48 135 55 80 15 30 15
56 145 55 90 15 30 15

3 Ø

42 125 55 70 15 30 15
48 135 55 80 15 30 15
56 145 55 90 15 30 15

Capacity is based on standard length and maximum allowance length is on the basis of
reliability. If outdoor unit is at higher elevation than the indoor units, after 24 m of vertical
height, 1 oil trap is required.

CAUTION

!

Branch Pipe

Main Pipe

Multiple Piping Type Distributor Type

h1

Distributor

A

Distributor

B

A

h2

h1

B

h2

INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

11

Refrigerant charge

The calculation of the additional charge should be taken in account for the length of extra pipe.

Multiple Piping Models (Unit: m)

Distributor type Models (Unit: m)

• Multiple Piping Models
Additional charge (g) = ((A Room Installation Length – Standard Length ) x 20 g/m

+ (B Room Installation Length – Standard Length ) x 20 g/m +.. )

- CF(Correction Factor) x 150

h CF = Max. number of connectable indoor unit – Total number of connected indoor unit

• Distributor type Models
Additional charge (g) = (( Total Main piping Length - Main Standard Length ) x 50 g/m

+ (A Room Branch Length – Standard Length ) x 20 g/m
+ (B Room Branch Length – Standard Length ) x 20 g/m
+ (C Room Branch Length – Standard Length ) x 20 g/m +.. )

- CF(Correction Factor) x 100

h CF = Max. number of connectable indoor unit – Total number of connected indoor unit

Phase Capacity(kBtu/h)

Standard

Length(m)

Max Piping for

one room(m)

Max total Piping

Length

Additional

Charge(g/m)

1 Ø

14/16 7.5 20 30 20

18 7.5 25 50 20
21 7.5 25 50 20

24/27 7.5 25 70 20

30 7.5 25 75 20
40 7.5 25 85 20

Phase Capacity(kBtu/h)

Main Piping length Branch piping length

Standard

length(m)

Additional

refrigerant(g/m)

Standard

length(m)

Additional

refrigerant(g/m)

1 Ø

40 5 50 5 20
48 5 50 5 20
56 5 50 5 20

3 Ø

42 5 50 5 20
48 5 50 5 20
56 5 50 5 20

• Total main pipe(A+B+C) = 30 m

• Each branch pipe
a = 10 m
b = 8 m
c = 5 m
d = 3 m
e = 10 m

*Additional Charge

=((30-5) x 50 + (10-5) x 20 + (8-5) x 20

+ (5-5) x 20 + (3-5) x 20 + (10-5) x 20)

- (7-5) x 100 = 1 270 g

Ex) Distributor type Model 1 Ø, 40 kBtu/h

A

A

C

abc

B

7 k 9 k 9 k

18 k

e

d

9 k

12

INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

Preparing work for Installation (ART COOL Type Only)

1 First, push the front panel backward and lift it up to remove the two screws.
2 The moment of lifting the both lower parts of panel front, you can hear sound this panel came

out, In this time panel front is separated

3 After pull down this panel a bit, and separate connecting wire with product.

1 Remove two screws(for fixing cover pipe)
2 Pull up the cover side of desired connecting direction, then

cover side is separated.

3 In case of connecting direction is left or right, path through

the hole of cover side.

1 Remove the rubber stopple of desired direction of drainage.
2 As the following picture, Insert drain hose in the handle of

drain pan, and join drain hose and connecting hose.

Pipe hole

rubber cap

Only one

desiring direction

Connecting

part

Adhesive

Drain

hose

NOTE

!

When connecting pipe path through rear
wall, don’t remove the hole.

Open panel front

Remove cover pipe and cover side

Drain hose junction

After removing the pipe hole, cut the burr
for safety.

CAUTION

!

Panel Front

Connector

Panel Front

Connector

INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

13

Sticking the installation guide map and fixing Indoor unit
(ART COOL Type Only)

Put an Installation Guide Map on the desired surface.

Make a hole with diameter of 6 mm and depth of 30-35 mm when piercing a screw point.

Drive the four plastic anchors into drilled points.

Hang the hole of product at the upper screws.
(In this time, Remove the map)
(Falling attention)

Check the fixed product with light power.

Adjust level even by level guage and fix to installation for reference on the wall.

INSTALLATION GUIDE MAP

I

N

ST

AI

IATION

G

UI

DE

M

A

P

Plastic anchors

I

N

S

TALL

A

TI

ON

GU

I

D

E

M

AP

I

NSTALL

AT

I

O

N G

U

IDE

M

A

P

Hanger hole

(Rear side of

product)

Horizontality

I

N

S

T

AL

L

A

TI

O

N

G

UIDE

MA

P

14

INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

Drill the piercing part for connecting pipe as diameter Ø 65 mm. (In case of piercing rear surface)

First, Drive the two points of the upper parts by screws.(Leave 10 mm for hanging product)

Drive the lower parts after facing the hole of product with plastic anchors, and fix completely the
upper screws.

In case of nothing wrong in the matter, connect the pipe and the wire. (Installation manual
reference)

Drill a hole in the wall

Drill the piping hole with a Ø 65 mm hole core drill. Drill the piping hole at either the right or the
left with the hole slightly slanted to the outdoor side.

Refer to No. 5 on this page when making a hole in the wall.

10mm

INSTALLATION GU

Plastic

anchors

WALL

Indoor

Outdoor

5-7 mm

(3/16"-5/16")

INSTALLATION OF WIRED REMOTE CONTROLLER

ENGLISH

15

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

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
individually separate one at a time.

- Please be careful not to damage the inside
components when separating.

Wall

Side

Wall
Side

Wall

Side

Wall
Side

<Connecting order>

<Separating order>

INSTALLATION OF WIRED
REMOTE CONTROLLER

1

2

2

3

<Wire guide grooves>

3

16

INSTALLATION OF WIRED REMOTE CONTROLLER

ENGLISH

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 10 m.

Please check if connector is normally connected.

Connecting cable

Indoor
Unit side

DC 12 V Red

Signal Yellow

GND Black

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 50 m or above.
(It can cause communication error.)

• When installing the extension cable, check the connecting direction of the connector of the
remote 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 OF WIRED REMOTE CONTROLLER

ENGLISH

17

Fig.1 Typical locations for remote controller

Wired 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
maintain proper space temperature. Install the remote controller about 5 ft(1.5 m) 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.)

yes

no

no

5 feet

no

(1.5 meters)

18

FLARING WORK AND CONNECTION OF PIPING

ENGLISH

Flaring work

Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the
following procedure.

Cut the pipes and the cable

- Use the piping kit accessory or the pipes
purchased locally.

- Measure the distance between the indoor
and the outdoor unit.

- Cut the pipes a little longer than measured
distance.

- Cut the cable 1.5 m longer than the pipe
length.

Burrs removal

- Completely remove all burrs from the cut
cross section of pipe/tube.

- Put the end of the copper tube/pipe in a
downward direction as you remove burrs in
order to avoid dropping burrs into the tubing.

Putting nut on

- Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.
(not possible to put them on after flaring
work)

Flaring work

- Carry out flaring work using flaring tool as
shown below.

Firmly hold copper pipe in a bar in the
dimension shown in the table below.

Copper

tube

90 °

Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

FLARING WORK AND CONNECTION OF
PIPING

Pipe diameter

Inch (mm)

A Inch (mm)

Wing nut type

Clutch type

Ø 1/4 (Ø 6.35)

0.04 - 0.05 (1.1 - 1.3)

0 - 0.02 (0 -

0.5)

Ø 3/8 (Ø 9.52)

0.06 - 0.07 (1.5 - 1.7)

Ø 1/2 (Ø 12.7)

0.06 - 0.07 (1.6 - 1.8)

Ø 5/8 (Ø 15.88)

0.06 - 0.07 (1.6 - 1.8)

Ø 3/4 (Ø 19.05)

0.07 - 0.08 (1.9 - 2.1)

Bar

Copper pipe

<Wing nut type>

"A"

<Clutch type>

FLARING WORK AND CONNECTION OF PIPING

ENGLISH

19

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.

Connection of piping - Indoor

Preparing the indoor unit's piping and drain hose for installation through the wall.

1 Route the indoor tubing and the drain hose in the direction of rear left or right

2 Tape the tubing, drain hose and the connecting cable. Be sure that the drain hose is located at

the lowest side of the bundle. Locating at the upper side can cause drain pan to overflow
inside the unit.

Inclined

Inside is shining without scratches.

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

If the drain hose is routed inside the room, insulate the hose with an insulation material* so
that dripping from "sweating"(condensation) will not damage furniture or floors.
*Foamed polyethylene or equivalent is recommended.

CAUTION

!

Drain hose

Drain hose

Drain hose

Tape

Connecting
pipe

Drain hose

Connecting cable

Tape

Connecting
pipe

Drain hose

Connecting cable

Connecting
cable

Drain hose

Gas side
piping

Liquid side
piping

Loop

20

FLARING WORK AND CONNECTION OF PIPING

ENGLISH

Indoor unit installation
Hook the indoor unit onto the upper portion of
the installation plate.(Engage the two hooks of
the rear top of the indoor unit with the upper
edge of the installation plate.) Ensure that the
hooks are properly seated on the installation
plate by moving it left and right.
Press the lower left and right sides of the unit
against the installation plate until the hooks
engage into their slots(clicking sound).

Connecting the pipings to the indoor unit and
drain hose to drain pipe

- Align the center of the pipings and
sufficiently tighten the flare nut by hand.

- Tighten the flare nut with a wrench.

- When extending the drain hose at the indoor
unit, install the drain pipe.

Wrap the insulation material around the
connecting portion.

- Overlap the connection pipe insulation
material and the indoor unit pipe insulation
material. Bind them together with vinyl tape
so that there is no gap.

- Wrap the area which accommodates the rear
piping housing section with vinyl tape.

Outside diameter

A

mm inch mm
Ø 6.35 1/4 1.1 - 1.3
Ø 9.52 3/8 1.5 - 1.7
Ø 12.7 1/2 1.6 - 1.8

Ø 15.88 5/8 1.6 - 1.8
Ø 19.05 3/4 1.9 - 2.1

Drain hose

Connecting

Indoor unit tubing

Flare nut

Pipings

Torque wrench

Indoor unit tubing

Spanner (fixed)

Connection pipe

Flare nut

Vinyl tape(narrow)

Adhesive

Drain pipe

Indoor unit drain hose

Plastic bands

Insulation material

Vinyl tape(narrow)

Connection
pipe

Connecting cable

Vinyl tape
(wide)

Wrap with vinyl tape

Indoor
unit pipe

Pipe

FLARING WORK AND CONNECTION OF PIPING

ENGLISH

21

- Bundle the piping and drain hose together by
wrapping them with vinyl tape over the
range within which they fit into the rear
piping housing section.

Good case
Press on the upper side of clamp and unfold
the tubing to downward slowly.

Bad case
Following bending type from left to right could
cause problem of pipe damage.

Connection of piping - Outdoor

Align the center of the piping and sufficiently
tighten the flare nut by hand.

Connecting pipe order

1) ROOM A~E gas side pipe

2) ROOM A~E liquid side pipe

Finally, tighten the flare nut with torque wrench
until the wrench clicks.

- When tightening the flare nut with torque
wrench ensure the direction for tightening
follows the arrow on the wrench.

Wrap with vinyl tape

Drain hose

Pipe

Vinyl tape(wide)

Ø 12.7(1/2 inch) Connector

Outdoor unit

Main gas
side valve

Main liquid
side valve

Gas side piping

ROOM A

ROOM B

ROOM C

ROOM D

ROOM E

Liquid
side piping

Outside diameter

A

mm inch mm
Ø 6.35 1/4 1.1 - 1.3
Ø 9.52 3/8 1.5 - 1.7
Ø 12.7 1/2 1.6 - 1.8

Ø 15.88 5/8 1.6 - 1.8
Ø 19.05 3/4 1.9 - 2.1

Installation Information (For right piping) For right piping, follow the instruction below.

CAUTION

!

22

FLARING WORK AND CONNECTION OF PIPING

ENGLISH

- For the units with capacity more than 48
kBtu/h, the installation piping is connectable
in four directions.(refer to figure 1)

- When connecting in a downward direction,
knock out the knockout hole of the base pan.
(refer to figure 2)

Preventing foreign objects from entering
(Figure3)

- Plug the pipe through-holes with putty or
insulation material(procured locally)to stop up
all gaps,as shown in the figure 3.

- Insects or small animals entering the outdoor
unit may cause a short circuit in the electrical
box.

Outdoor unit

Continuous

Forward

Sideways

Backward

Knock-out Base pan

Downward

Gas side piping
(Bigger Dia.)

Liquid side piping
(Smaller Dia.)

Putty or insulating material
(produced locally)

Torque wrench

Drain hose

Connecting wire

Connection pipe

<Figure 1>

<Figure 2>

<Figure 3>

FLARING WORK AND CONNECTION OF PIPING

ENGLISH

23

Y branch

A

B

Facing upwards

Viewed from point A
in direction of arrow

Horizontal
plane

Within +/- 10°

A

Ⓐ To Outdoor Unit
Ⓑ To BD Unit

Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.)

Branch pipe should be insulated with the insulator in each kit.

Model Gas Pipe Liquid Pipe

PMBL5620

Ø 19.05

Ø 19.05

Ø 19.05

Ø 9.52

Ø 9.52

Ø 9.52

PMBL1203F0

Ø 19.05

Ø 9.52

Ø 9.52

[unit:mm]

Branch

Liquid and gas
pipe joints

Tape(field supply)

Tape
(field supply)

Tape(field supply)

Insulator

(included with kit)

Insulation

Insulation

Ta p e
(field supply)

Insulation

Insulator for
field piping

Tape(field supply)

Insulation

24

FLARING WORK AND CONNECTION OF PIPING

ENGLISH

Installation

- This unit may be installed suspended from the ceiling or mounted on the wall.

- This unit may only be installed horizontally , as shown in the diagram below.(Side B is facing up)
However, it may be freely installed in any direction forward or back, and to the sides.

- Be sure to leave a 600 mm square opening for service and inspection as shown in the diagram
below, for both ceiling - suspended installation and wall-mounted installation.

- This unit "does not require drain treatment" as it uses internal foam treatment as low-pressure
piping insulation.

- Service direction is the side B and C

- The piping for the indoor unit may be led around in direction A

- The inclination of side B must be within ± 5 degrees forward or back or to the sides.

[unit:mm]

Ø 19.05

A

(36)

50

(38)

(56)

Min 400

Min 30

250

(298)

Suspension bolt pitch.

505050

(150)

505050

(Servicing space)

Min 400

245

Main Pipe

Cover ControlBranch Pipe

Min 300

Ø 9.52

(111)

6030072

Inspection opening

600

(337)

B

5030

C

FLARING WORK AND CONNECTION OF PIPING

ENGLISH

25

(

(1) Ceiling-suspended type

(2) Wall-mountde type

Procedure

1 Fix the furnished hanger metal with two

screws.(4 locations in total).

2 Using an insert-hole-in- anchor, hang the

hanging bolt.

3 Install a hexagon nut and a flat washer

(locally-procured)to the hanging bolt as
shown in the figure in the left, and lift the
main unit to hang on the hanger metal.

4 After checking with a level that the unit is

level, tighten the hexagon nut.
* The tilt of the unit should be within ± 5 °

in front/back and left/right.

Procedure

1 Fix the furnished hanger metal with two

screws. (3 locations in total).

2

After checking with a level that the unit is level,
fix the unit with the furnished wood screws.

* The tilt of the unit should be within ±5° in

front/back and left/right.

*

Block up the parts of hanger holes (2 places)
by using insulation PE after installing the
hanger.

Screws(M5)
(locally procude)

Six-sided Nut
(M10 or M8)

Hanger metal

Flat washer

Hanging bolt

NOTE

!

• This unit has two different installation

types: (1) Ceiling-suspended type and
(2) wall-mounted type.

• Choose the proper installation pattern

according to the location of installation.

• The installation location for printed

wiring board can be changed.
Follow the procedure specified in the
"CONNECTING THE WIRING" section to
change the location.

Ceiling-suspended type

Wall-mounted type

Installation of The Main Unit

• Once a screw-hole on the main unit has
had a screw hammered in, make sure
to either hammer it again or cover it
with alumium tape. (This is to prevent
condensation)

• Be sure to install the unit with the
ceiling-side up.

• Do not install near bedrooms. the sound
of refrigerant flowing through the piping
may sometimes be audible.

CAUTION

!

BD unit

Six-sided Nut

Six-sided Nut

(M10 or M8)

(M10 or M8)

Hanger metal

Hanger metal

Flat washer

Flat washer

Hanging bolt

Hanging bolt
(M10 or M8)

15.00

PE

PE

Screws(M5)

Screws(M5)

(locally procude)

(locally procude)

26

CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT

ENGLISH

Connect the cable to the Indoor unit

Connect the cable to the indoor unit by connecting the wires to the terminals on the control
board individually according to the outdoor unit connection. (Ensure that the color of the wires of
the outdoor unit and the terminal No. are the same as those of the indoor unit.)
The earth wire should be longer than the common wires.
The circuit diagram is not subject to change without notice.
When installing, refer to the circuit diagram behind the panel front of Indoor Unit the wiring
diagram on the Control Cover Inside Outdoor Unit.

• The circuit diagram is not subject to change without notice.

• Be sure to connect wires according to the wiring diagram.

• Connect the wires firmly, so that not to be pulled out easily.

• Connect the wires according to color codes by referring the wiring diagram.

CAUTION

CONNECTING THE CABLE BETWEEN INDOOR
UNIT AND OUTDOOR UNIT

2 Unit 3 Unit

4 Unit 5 Unit

!

CAUTION

CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT

ENGLISH

27

The power connecting cable connected to the indoor and outdoor unit
should be complied with the following specifications (This equipment
shall be provided with a cord set complying with the national
regulation).

GN/YL

20 mm

NORMAL
CROSS-SECTIONAL
AREA 0.75 mm

2

H07RN-F

ø7.5 mm

G

N/YL

20 mm

Phase 1 Ø 3 Ø

Capacity (kBtu/h) 14 16 18 21 24 27 30 40 48 56 42 48 56

NORMAL CROSS SECTIONAL AREA

2.5 2.5 2.5 2.5 2.5 2.5 2.5 3.5 4.0 4.0 2.5 2.5 2.5

Cable Type H07RN-F

7~9 Unit (1 Ø)5 Unit 7~9 Unit (3 Ø)

The power cord connected to the outdoor unit should be complied with the following
specifications (Cable type approved by HAR or SAA).

Provide a circuit breaker between power source and
the unit as shown below.

CAUTION

!

!

Main power source

Air

Conditioner

Circuit Breaker
Use a circuit breaker
or time delay fuse.

28

CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT

ENGLISH

1 Remove the cover control from the unit by

loosening the screw.
Connect the wires to the terminals on the
control board individually as the following.

2 Secure the cable onto the control board

with the holder (clamper).

3 Refix the cover control to the original

position with the screw.

4 Use a recongnized circuit breaker between

the power source and the unit. A
disconnection device to adequately
disconnect all supply lines must be fitted.

Capacity (kBtu/h) 14 16 18 21 24 27 30 40 48 56

Circuit Breaker (A) 15 15 20 20 25 25 25 30 40 40

Capacity (kBtu/h) 42 48 56

Circuit Breaker (A) 20 20 20

1 Ø Models

3 Ø Models

Connect the cable to the Outdoor unit

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 Firmly tighten the terminal screws to prevent them loosening. After tightening, pull the

wires lightly to confirm that they do not move. (If they are loose the unit, the unit will not
operate normally or it can 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 Do not install an earth leakage circuit breaker in a wet or moist area.
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 3 mm in each active(phase) conductors.

10 The Power cord connected to the unit should be selected according to the following

specifications.

CAUTION

!

Outdoor unit

Terminal block

Over 15 mm

Holder for

power supply

cord

Cover control

Power cord

Connecting cable

Loosen terminal screw

Terminal block

CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT

ENGLISH

29

Use round pressure terminals for connections to the power terminal block.

When none are available, follow the instructions below.

- Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power
wiring may cause abnormal heat.)

- When connecting wiring which is the same thickness, do as shown in the figure below.

- For wiring, use the designated power wire and connect firmly, then secure to prevent outside
pressure being exerted on the terminal block.

- Use an appropriate screwdriver for tightening the terinal screws. A screwdriver with a small
head will strip the head and make proper tighterning impossible.

- Over-tightening the terminal screws may break them.

Round pressure terminal

Power wire

Connect same thickness
wiring to both sides.

It is forbidden to connect
two to one side.

It is forbidden to
connect wiring of
different thicknesses.

Precautions when laying power wiring

30

CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT

ENGLISH

Connection of Wiring

- Connect refrigerant pipes and connection
wires to the appropriate ports maked with
matching alphabets (A, B and C) on this unit.

- Follow the instructions on the wiring
nameplate to connect the connection wires
of indoor/outdoor units to terminal board
numbers.(1, 2 and 3) Always fix each ground
wire separately with a ground screw.(See
the figure below.)

- After completing the wiring, fix the outer
coating of wires securely with wire clamps.
The wire clamp on indoor unit side is
furnished. Follow the procedure below to
install.

- Refer to the circuit diagram on the control
cover inside outdoor unit.

1 Remove the control cover. Loosen the two

screws, and slide the cover in the direction
of the arrow.

2 Perform wiring with reference the wiring

diagram on a control cover of outdoor unit.
Allow 300 mm for the pulling-out section
of harness. Fix the wires completely with
wire clamps(4 locations).

3 Put in the cover in the direction of the

arrow then tighten the screws.

NOTE

!

The terminal board numbers are arranged
from top to bottom in order of 1, 2 and 3.

In Case of 3 rooms

WARNING

!

Do not use tapped wires, stand wires,
extensioncords, or starbust connections,
as they may cause overtheating, electrical
shock, or fire.

ROOM A

ROOM B

ROOM C

Connection wire for

(H05VV, 4 wires, 0.75 mm)

indoor units

A

B

C

CN-PWR

Connection wire
for outdoor units
(H05RV, 4 wires, 1.2 mm)

CHECKING THE DRAINAGE AND FORMING THE PIPINGS

ENGLISH

31

Checking the Drainage

To check the drainage.

1 Pour a glass of water on the evaporator.
2 Ensure the water flows through the drain

hose of the indoor unit without any
leakage and goes out the drain exit.

Drain piping

1 The drain hose should point downward for

easy drain flow.

2 Do not make drain piping.

Downward slope

Do not raise

Water
leakage

Accumulated
drain water

Air

Waving

Water
leakage

Tip of drain hose
dipped in water

Water
leakage

Ditch

Less than
50 mm gap

CHECKING THE DRAINAGE AND FORMING
THE PIPINGS

Connecting area

drain hose

Leakage

checking

Drain pan

Drain

hose

Leakage

checking

32

CHECKING THE DRAINAGE AND FORMING THE PIPINGS

ENGLISH

Forming the Piping

Form the piping by wrapping the connecting
portion of the indoor unit with insulation
material and secure it with two kinds of vinyl
tape.

- If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.

In cases where the outdoor unit is installed
below the indoor unit perform the following.

1 Tape the piping, drain hose and connecting

cable from down to up.

2 Secure the tapped piping along the exterior

wall using saddle or equivalent.

• Trap is required to prevent water from entering
into electrical parts.

Plastic
band

Taping

Drain hose

Pipings

Connecting
cable

Power supply
cord

Seal a small opening
around the pipings
with gum type
sealer.

In cases where the Outdoor unit is installed
above the Indoor unit perform the following.

1 Tape the piping and connecting cable from

down to up.

2 Secure the taped piping along the exterior

wall. Form a trap to prevent water entering
the room.

3 Fix the piping onto the wall by saddle or

equivalent.

Seal a small opening
around the pipings
with gum type sealant.

Trap

Trap

AIR PURGING AND EVACUATION

ENGLISH

33

Check that each tube(both liquid and gas side
tubes) between the indoor and outdoor units
have been properly connected and all wiring
for the test run has been completed. Remove
the service valve caps from both the gas and
the liquid side on the outdoor unit. Check that
both the liquid and the gas side service valves
on the outdoor unit are kept closed at this
stage.

Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to this
service port with charge hoses.

- Do a leakage test of all joints of the
tubing(both indoor and outdoor) and both gas
and liquid side service valves.
Bubbles indicate a leak. Be sure to wipe off
the soap with a clean cloth.

- After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening
the charge hose connector at the nitrogen
cylinder. When the system pressure is
reduced to normal, disconnect the hose from
the cylinder.

The air and moisture remaining in the
refrigerant system have undesirable effects as
indicated below.

- Pressure in the system rises.

- Operating current rises.

- Cooling(or heating) efficiency drops.

- Moisture in the refrigerant circuit may freeze
and block capillary tubing.

- Water may lead to corrosion of parts in the
refrigeration system.

Therefore, after evacuating the system, take a
leak test for the piping and tubing between
the indoor and outdoor unit.

Checking method

Preparation

Leakage test

AIR PURGING AND EVACUATION

Be sure to use a manifold valve for leakage
test. If it is not available, use a stop valve
for this purpose. The "Hi" knob of the
manifold valve must always be kept close.

- Pressurize the system to no more than
550 P.S.I.G. with dry nitrogen gas and
close the cylinder valve when the gauge
reading reached 550 P.S.I.G. Next, test
for leaks with liquid soap.

CAUTION

To avoid nitrogen entering the refrigerant
system in a liquid state, the top of the
cylinder must be higher than its bottom
when you pressurize the system. Usually,
the cylinder is used in a vertical standing
position.

CAUTION

!

!

Indoor unit

Manifold valve

Outdoor unit

Lo Hi

Pressure
gauge

Charge hose

Nitrogen gas
cylinder(in vertical
standing position)

34

AIR PURGING AND EVACUATION

ENGLISH

- When the desired vacuum is reached, close
the "Lo" knob of the manifold valve and stop
the vacuum pump.

Required time for evacuation when 30 gal/h

vacuum pump is used

If tubing length is

less than 10 m (33

ft)

If tubing length is

longer than 10 m (33

ft)

Less than 0.5 Torr Less than 0.5 Torr

- Replace the valve caps at both gas and liquid
side service valves and fasten them tight.

This completes air purging with a vacuum pump.
The air conditioner is now ready to test run.

- With a service valve wrench, turn the valve
stem of liquid side valve counter-clockwise to
fully open the valve.

- Turn the valve stem of gas side valve counter­clockwise to fully open the valve.

- Loosen the charge hose connected to the gas
side service port slightly to release the pressure,
then remove the hose.

- Replace the flare nut and its bonnet on the gas
side service port and fasten the flare nut
securely with an adjustable wrench. This
process is very important to prevent leakage
from the system.

Lo Hi

Manifold valve

Vacuum pump

Open

Open

Pressure
gauge

Indoor unit

Outdoor unit

Finishing the Job

Evacuation

- Connect the charge hose end described in
the preceding steps to the vacuum pump to
evacuate the tubing and indoor unit.
Confirm the "Lo" knob of the manifold valve
is open. Then, run the vacuum pump.
The operation time for evacuation varies with
tubing length and capacity of the pump. The
following table shows the time required for
evacuation.

WARNING

!

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.

PANEL FRONT ASSEMBLY (ART COOL TYPE ONLY)

ENGLISH

35

1 First, Check the side cover assembly

exactly, Fix power cord in the bottom
groove of cover side left.

2 Assemble connecting lead wire with

controller and first fix the upper part of
panel front, then match the lower part of
panel front

3 Suspend hook of front panel in the groove

after contract lower of 2 screws.

Panel Front

Connector

Panel Front

Connector

PANEL FRONT ASSEMBLY
(ART COOL TYPE ONLY)

36

INSTALLATION PI485

ENGLISH

Fix the PI485 PCB as shown in Fig.
Detailed installation method refer to PI485 Installation Manual.

18 kBtu/h, 21 kBtu/h

24 kBtu/h, 27 kBtu/h, 30 kBtu/h

1 Ø : 40 kBtu/h, 48 kBtu/h, 56 kBtu/h
3 Ø : 42 kBtu/h, 48 kBtu/h, 56 kBtu/h

INSTALLATION PI485

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G

a

te

w

a

y.

G

a

t

e

w

a

y.

Screw HoleScrew Hole

Screw HoleScrew Hole

M

EZ3

0

1

7

1

8

0

2

ME

Z30

1

7

18

0

2

TEST RUNNING

ENGLISH

37

Remove the battery cover by pulling it
according to the arrow direction.

Insert new batteries making sure that the (+)
and (–) of battery are installed correctly.

Reattach the cover by pushing it back into
position.

- Check that all tubing and wiring have been
properly connected.

- Check that the gas and liquid side service
valves are fully open.

Prepare remote control

Bolt

Tubing connection

Discharge
temperature

Discharge air

Intake temperature

Discharge
temperature

Discharge air

Intake temperature

Discharge
temperature

Discharge air

Intake temperature

Operate unit for 15~20 minutes, then check
the system refrigerant charge:

- Measure the pressure of the gas side service
valve.

- Measure the temperature of the intake and
discharge of air.

- Ensure the difference between the intake
temperature and the discharge is more than
8 °C.

- For reference, the gas side pressure of
optimum condition is as below.(Cooling)

Refrigerant

Outside

ambient

TEMP.

The pressure of

the gas side

service valve.

R410A 35 °C (95 °F)

8.5 - 9.5 kg/cm2G

(120 - 135 P.S.I.G.)

NOTE

!

If the actual pressure are higher than
shown, the system is most likely over
charged, and charge should be removed.
If the actual pressure are lower than
shown, the system is most likely
undercharged, and charge should be
added.
The air conditioner is now ready for use.

Evaluation of the performance

NOTE

!

• Use 2 AAA(1.5 volt) batteries. Do not
use rechargeable batteries.

• Remove the batteries from the remote
control if the system is not going to be
used for a long time.

TEST RUNNING

38

FUNCTION

ENGLISH

Dip S/W Setting

If you set the Dip Switch when power is on, the change in setting is not
applicable. The changing setting is enabled only when Power is reset.

Dip Switch

Function

1234

Normal Operation (No Function)

Forced Cooling Operation

Wiring Error Check

Saving Power Consumption (Step 1)

Saving Power Consumption (Step 2)

Mode Lock (Cooling)

Mode Lock (Heating)

Night Quiet Mode (Step 1)

Night Quiet Mode (Step 2)

Mode Lock (Cooling) + Night Quiet Mode (Step 1)

Mode Lock (Cooling) + Night Quiet Mode (Step 2)

Mode Lock (Cooling) + Saving Power Consumption (Step 1)

Mode Lock (Cooling) + Saving Power Consumption (Step 2)

Mode Lock (Heating) + Saving Power Consumption (Step 1)

Mode Lock (Heating) + Saving Power Consumption (Step 2)

FUNCTION

WARNING

!

When you set the dip switch, you should turn off the circuit breaker or shut the power
source of the product down.

• Unless the applicable dip switch is set properly, the product may not work.

• If you want to set a specific function, request that the installer sets the dip switch appropriately
during installation.

CAUTION

!

FUNCTION

ENGLISH

39

14/16/18/21(1 Ø) kBtu/h 40/48/56(1 Ø) kBtu/h

42/48/56(3 Ø) kBtu/h

24/27/30(1 Ø) kBtu/h

DIP-SW

SW01N

DIP SW2

Forced Cooling Operation

Adding the refrigerant in winter.

Setting Procedure

1 Set the Dip Switch as follow after shutting

the power source down.

2 Reset the power.
3 Check that the Red LED of PCB is on

during work.
(The indoor unit is operated by force.)

4 Add the specific amount of refrigerant.

- When the green LED of PCB is on,
compressor is going to be off because
of low pressure.

- You should return the Dip Switch to
operate normally after finishing the
operation.

CAUTION

!

40

FUNCTION

ENGLISH

Saving Power Consumption

Saving Power Consumption operation is the
function which enables efficient operation by
lowering the maximum power consumption
value.

Setting Procedure

1 Set the Dip Switch as follow after shutting

the power source down.

2 Reset the power.

1 second1 second 1 second1 second1 second 1 second

1 second 1 second

LED1

(Red)

LED1

(Green)

3

3

2

2

Step 1 Step 2

Wiring Error Check

You can check whether or not the wiring is correct.

Setting Procedure

1 Set the Dip Switch as follow after shutting

the power source down.

2 Reset the power.
3 Check that the Re and Green LED of PCB

are on during work. (The indoor unit is
operated by force.)

4 If the wiring is correct, the Green LED will

light up.
If the wiring is wrong, display as below
(Display only wrong connection.)

• Red LED : Piping Number

• Green LED : Wiring Number (Room)

Example)
If the Red LED blinks twice and the Green
LED blinks 3 times, 2nd pipe is connected to
3rd room.

5 You should return the Dip Switch to

operate normally after finishing wiring error
check.

• If Indoor unit doesn’t communicate to

outdoor Unit, function could not be
operated correctly.

• Only the wrong wiring connection is

displayed. You should change connection
correctly to operate the product.

• If Outdoor and Indoor temperature is too

low in winter, the wiring error check
function will not be operated.
(Red LED is lighting)

CAUTION

!

Power

consumption

and current

Nomal

Time

FUNCTION

ENGLISH

41

Saving Power Consumption Current level.

Night Quiet Mode

Night Quiet Mode operation lowers the noise level of the outdoor unit by changing the comp
frequency and fan speed. This function is operated all night long.

Setting Procedure

1 Set the Dip Switch as follow after shutting the power source down.

2 Reset the power.

Night Quiet Mode with Mode Lock.

Saving Power Consumption with Mode Lock.

Phase 1 Ø 3 Ø

Model 14 k 16 k 18 k 21 k 24 k 27 k 30 k 40 k 48 k 56 k 42 k 48 k 56 k

Step1(A) 8 8 9 9 12 13 15 22 24 26 7 8 9

Step2(A) 7 7 8 8 10 11 13 18 20 22 6 7 8

Saving Power
Consumption (step 1)
+ Mode Lock (Cooling)

Saving Power
Consumption (step 2)
+ Mode Lock (Cooling)

Saving Power
Consumption (step 1)
+ Mode Lock (Heating)

Saving Power
Consumption (step 2)
+ Mode Lock (Heating)

Mode Lock (Cooling)
+ Night Quiet Mode
(step 1)

Mode Lock (Cooling)
+ Night Quiet Mode
(step 2)

Step 1 Step 2

h Noise level :Step 1 > Step 2

• If comp frequency and fan speed are down, the cooling capacity may decrease accordingly.

• This function is only available for Cooling Mode.

• If you want to stop the Night Quiet Mode, Change the Dip Switch.

• If operating indoor unit is set by the fan speed “Power”, Night Quiet Mode will be stopped until
fan speed “Power” is changed.

CAUTION

!

42

FUNCTION

ENGLISH

Mode Lock

Setting Procedure

1 Set the Dip Switch as follow after shutting the power source down.

2 Reset the power.

Mode Lock with Night Quiet Mode

Saving Power Consumption with Mode Lock.

Mode Lock (Cooling)
+ Night Quiet Mode
(step 1)

Mode Lock (Cooling)
+ Night Quiet Mode
(step 2)

Mode Lock (Cooling)
+ Saving Power
Consumption (step 1)

Mode Lock (Heating)
+ Saving Power
Consumption (step 1)

Mode Lock (Cooling)
+ Saving Power
Consumption (step 2)

Mode Lock (Heating)
+ Saving Power
Consumption (step 2)

Only Cooling Mode Only Heating Mode

FUNCTION

ENGLISH

43

PCB Display(14/16/18/21 k Model Only)

It is useful to check the cycle data without LGMV.

Whenever you push the Tact Switch, the cycle information will be shown as below.
h After 1page is displayed, subsequently 2page is displayed.

Tact S/W

Item

Display

14/16 k 18/21 k Example 1page 2page

- 1 time Low Pressure 890 kpa ‘LP’ ’89’

- 2 time Hi Pressure 2900 kpa ‘HP’ ‘290’

1 time 3 time Discharge Temp. 85 °C ‘DS’ ’85’

2 time 4 time Cond Out Temp. -10 °C ‘CS’ ‘-10’

3 time 5 time Suction Temp. -10 °C ‘SS’ ‘-10’

4 time 6 time ODU Air Temp. -10 °C ‘AS’ ‘-10’

5 time 7 time Current 15 A ‘A’ ‘15’

6 time 8 time Voltage 230 V ‘V’ ‘230’

7 time 9 time Comp Hz 100 Hz ‘F’ ‘100’

8 time 10 time DC Link Voltage 230 V ‘dc’ ‘230’

Operating Method

WARNING

!

When you push the Tact Switch, use the material non-conducting electricity.

TACT-SW1

44

MAX COMBINATION CAPACITY

ENGLISH

Multi Piping Type

Distributor Type

The combination of indoor unit is to be decided that the sum of indoor unit capacity index must
be smaller than the maximum combination capacity of outdoor unit. We recommend to calculate
indoor unit capacity like below.

If you do not follow our recommendation, it will have some problems in low ambient condition
i.e. some indoor unit will not be able to heat very well in heating mode.

CALCULATION METHOD FOR THE CONNECTABLE TOTAL CAPACITY OF INDOOR UNIT

Sum up the capacity of all indoor unit, but high static duct type indoor unit capacity weights 1.3
times

Ex)

1 Outdoor unit : A9UW566FA3(FM56AH)(connectable maximum capacity is 73kBtu)

Indoor unit:
AMNH186BHA0[MB18AH],AMNH246BHA0[MB24AH],AMNH246BHA0[MB24AH]
(18 + 24 + 24) x 1.3 = 66 x 1.3 = 85.8 kBtu : this combination has a some problem

2 Out door unit: FM56AH

Indoor unit:
AMNH186BHA0[MB18AH],AMNH246BHA0[MB24AH],AMNH18GD5L0[MS18AH]
(18 + 24) x 1.3 + 18 = 72.6 kBtu : this combination can be ok

Phase

Capacity

(kBtu/h)

Max Room No.

Combination Indoor

Capacity (kBtu/h)

Combination Capacity

Range (kBtu/h)

1 Ø

40 7 5, 7, 9, 12, 18, 24 16 - 52
48 8 5, 7, 9, 12, 18, 24 19- 63
56 9 5, 7, 9, 12, 18, 24 23- 73

3 Ø

42 7 5, 7, 9, 12, 18, 24 16- 54
48 8 5, 7, 9, 12, 18, 24 19- 63
56 9 5, 7, 9, 12, 18, 24 23- 73

Capacity

(kBtu/h)

Max Room No.

Combination Indoor Capacity

(kBtu/h)

Max Combination Capacity

(kBtu/h)
14 2 5,7,9,12 21
16 2 5,7,9,12 24
18 3 5,7,9,12,18 30
21 3 5,7,9,12,18 33
24 4 5,7,9,12,18,24 39
27 4 5,7,9,12,18,24 41
30 5 5,7,9,12,18,24 48
40 5 5,7,9,12,18,24 52

MAX COMBINATION CAPACITY

INSTALLATION GUIDE AT THE SEASIDE

ENGLISH

45

If the outdoor unit is to be installed close to
the seaside, direct exposure to the sea wind
should be avoided. Install the outdoor unit on
the opposite side of the sea wind direction.

In case, to install the outdoor unit on the
seaside, set up a windbreak not to be
exposed to the sea wind.

- It should be strong enough like concrete to
prevent the sea wind from the sea.

- The height and width should be more than
150 % of the outdoor unit.

- It should be keep more than 70 cm of space
between outdoor unit and the windbreak for
easy air flow.

Place with fluent water draining

- Install at a place with fluent water draining to
prevent damage from localized heavy rain
and avoid frequent flooded area.

Sea wind

Sea wind

Sea wind

Windbreak

• Periodic ( more than once/year )
cleaning of the dust or salt particles
stuck on the heat exchanger by using
water.

Selecting the location(Outdoor Unit)

INSTALLATION GUIDE AT THE SEASIDE

• Air conditioners should not be installed
in areas where corrosive gases, such as
acid or alkaline gas, are produced.

• Do not install the product where it could
be exposed to sea wind (salty wind)
directly. It can result corrosion on the
product. Corrosion, particularly on the
condenser and evaporator fins, could
cause product malfunction or inefficient
performance.

• If outdoor unit is installed close to the
seaside, it should avoid direct exposure
to the sea wind. Otherwise it needs
additional anticorrosion treatment on
the heat exchanger.

CAUTION

!

46

SEASONAL WIND AND CAUTIONS IN WINTER

ENGLISH

SEASONAL WIND AND CAUTIONS IN WINTER

- Sufficient measures are required in a snow area or severe cold area in winter so that product
can be operated well.

- Get ready for seasonal wind or snow in winter even in other areas.

- Install a suction and discharge duct not to let in snow or rain.

- Install the outdoor unit not to come in contact with snow directly. If snow piles up and freezes
on the air suction hole, the system may malfunction. If it is installed at snowy area, attach the
hood to the system.

- Install the outdoor unit at the higher installation console by 50 cm than the average snowfall
(annual average snowfall) if it is installed at the area with much snowfall.

- Where snow accumulated on the upper part of the Outdoor Unit by more than 10 cm, always
remove snow for operation.

1 The height of H frame must be more than 2 times the snowfall and its width shall not

exceed the width of the product. (If width of the frame is wider than that of the product,
snow may accumulate)

2 Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal

wind.