Lg Arnu073b1g2 Installation Guide

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 : MFL42803121

www.lg.com

TYPE: Ceiling Concealed Duct - Low Static

ENGLISH

FRANÇAIS

ESPAÑOL

IMPORTANT!

CAUTION

: Improper installation, adjustment, alteration, service or maintenance can void the warranty.

The weight of the condensing unit requires caution and proper handling procedures when lifting
or moving to avoid personal injury. Use care to avoid contact with sharp or pointed edges.

Safety Precautions

• Always wear safety eye wear and work gloves when installing equipment.

• Never assume electrical power is disconnected. Check with meter and equipment.

• Keep hands out of fan areas when power is connected to equipment.

• R-410A causes frostbite burns.

• R-410A is toxic when burned.

NOTE TO INSTALLING DEALER: The Owners Instructions and Warranty are to be given to the owner

or prominently displayed near the indoor Furnace/Air Handler Unit.

When wiring:

Electrical shock can cause severe personal injury or death. Only a qualified,
experienced electrician should attempt to wire this system.

• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.

• Ground the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.

When transporting:

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and
bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on
the air conditioner can cut your finger.

When installing...

... in a wall: Make sure the wall is strong enough to hold the unit's weight.

It may be necessary to construct a strong wood or metal frame to provide added support.

... in a room: Properly insulate any tubing run inside a room to prevent "sweating" that can cause

dripping and water damage to wall and floors.

... in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid,

level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

... in an area with high winds: Securely anchor the outdoor unit down with bolts and a metal

frame. Provide a suitable air baffle.

... in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised platform that is

higher than drifting snow. Provide snow vents.

When connecting refrigerant tubing

• Keep all tubing runs as short as possible.

• Use the flare method for connecting tubing.

• Check carefully for leaks before starting the test run.

When servicing

• Turn the power OFF at the main power box(mains) before opening the unit to check or repair

electrical parts and wiring.

• Keep your fingers and clothing away from any moving parts.

• Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have

been left inside the unit being serviced.

Special warnings

WARNING

• Installation or repairs made by unqualified persons can result in hazards to you and others.
Installation MUST conform with local building codes or, in the absence of local codes, with the National Electrical
Code NFPA 70/ANSI C1-1993 or current edition and Canadian Electrical Code Part1 CSA C.22.1.

• 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.

Please read this instruction sheet completely before installing the product.

This air conditioning system meets strict safety and operating standards. As the installer or service person,
it is an important part of your job to install or service the system so it operates safely and efficiently.

2 Indoor Unit

Ceiling Concealed Duct - Low Static Type Indoor Unit Installation Manual

TABLE OF CONTENTS

o Four type "A" screws
o Connecting cable

o Pipes: Gas side

Liquid side
(Refer to Product
Data)

o Insulation materials
o Additional drain pipe

o Level gauge
o Screw driver
o Electric drill
o Hole core drill

o Flaring tool set
o Specified torque wrenches

(different depending on model No.)

o Spanner .......Half union

o A glass of water
o Screw driver

o Hexagonal wrench
o Gas-leak detector
o Vacuum pump
o Gauge manifold

o Owner's manual
o Thermometer

Safety Precautions.................4

Introduction .............................7

Installation

Selection of the best

location ...................................8

Ceiling opening dimension

and hanging bolt location ......9

Indoor Unit Installation.........10

Wiring Connection ...............10

Part name and functions .....11

Checking the Drainage........12

Installation of Wired

Remote Controller ...............16

Name and function of wired
remote controller(Accessory).18

Dip Switch Setting of Indoor unit

PCB.........................................19

Group Control Setting ............20

How to Set E.S.P? ...................25

Installation Requirements

Required Parts Required Tools

ENGLISH

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.

n Be sure to read before installing the air conditioner.
n Be sure to observe the cautions specified here as they include important items related to safety.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the

following indications.

n Meanings of symbols used in this manual are as shown below.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

Be sure not to do.

Be sure to follow the instruction.

n Installation

Do not use a defective or under­rated circuit breaker. Use this
appliance on a dedicated circuit.

• There is risk of fire or electric shock.

For electrical work, contact the
dealer, seller, a qualified 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 breaker
or fuse.

• There is risk of fire or electric shock.

4 Indoor Unit

Safety Precautions

n Operation

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
evaporator.

For installation, 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.

• 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.

ENGLISH

Installation Manual 5

Gasolin

Safety Precautions

Always check for gas (refriger­ant) leakage after installation or
repair of product.

• Low refrigerant levels may cause
failure of product.

Install the drain hose to ensure
that water is drained away prop­erly.

• A bad connection may cause water
leakage.

Keep level even when installing
the product.

• To avoid vibration or water leakage.

Do not install the product where
the noise or hot air from the out­door unit could damage the
neighborhoods.

• It may cause a problem for your
neighbors.

Use two or more people to lift
and transport the product.

• Avoid personal injury.

Do not install the product where
it will be exposed to sea wind
(salt spray) directly.

• It may cause corrosion on the product.
Corrosion, particularly on the con­denser and evaporator fins, could
cause product malfunction or inefficient
operation.

n Installation

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.

6 Indoor Unit

90˚

Introduction

Introduction

Air outlet vents

Air filters

Wired Remote Controller

R
e
m

o
t
e
C

o
n
t
r
oll

er

T
E

M
P

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the
air conditioner.

This symbol indicates special notes.

NOTICE

Symbols Used in this Manual

Features

Low static Duct type

ENGLISH

Installation Manual 7

Installation

Installation

Indoor unit

Install the air conditioner in the location that satisfies the fol­lowing conditions.

• The place shall easily bear a load exceeding four times the
indoor unitʼs 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

A(Min)

B(Min)

Ceiling

Service Space

A

B

H

600

(23-5/8)

600

(23-5/8)

Top view

[Unit : mm(inch)]

Front view

Inspection hole
[600(23-5/8) x 600(23-5/8)]

Control box

Capacity(Btu/h) A B

7/9/12/15k 600(23-5/8) 900(35-7/16)

18/24k 600(23-5/8) 1,100(43-5/16)

Unit:mm(inch)

Low static Duct type

8 Indoor 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 vibration.

• A place where service can be easily performed.

CASE 1

POSITION OF SUSPENSION BOLT

CE

G

D

A
J

B

M10 Nut
M10 SP. washer
M10 washer

X 4
X 4

(Local
supply)

X 4

M10 Nut

M10 SP. washer

M10 washer

X 4
X 4

(Local
supply)

X 4

I

F

H

Drainage hole

Drain Pump use

CASE 2

POSITION OF CONSOLE BOLT

[Unit: mm(inch)]

7/9/12/15k BTU/h

18/24k BTU/h

Dimension

Chassis

ABCDEFGHI J

850 900 383 575 93 190 21 795 163 820
(33-7/16) (35-7/16) 383(15) (22-5/8) (3-11/16) (7-7/16) (7/8) (31-5/16) (6-7/16) (32-5/16)
1130 1180 383 575 93 190 21 1065 163 1100
(44-7/16) (46-7/16) 383(15) (22-5/8) (3-11/16) (7-7/16) (7/8) (41-15/16) (6-7/16) (43-5/16)

ENGLISH

Installation Manual 9

Installation

• Select and mark the position for fixing bolts.

• Drill the hole for set anchor on the face of ceiling.

• Insert the set anchor and washer onto the suspen­sion bolts for locking the suspension bolts on the
ceiling.

•

Mount the suspension bolts to the set anchor firmly.

• Secure the installation plates onto the suspension
bolts (adjust level roughly) using nuts, washers
and spring washers.

1 Set anchor

Old building New building

2 Plate washer
3 Spring washer

4 Nut

5 Suspension
bolts

Connect the wires to the terminals on the control board individually according to the outdoor unit connection.

• 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(L1) 2(L2) 3(A) 4(B)

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

CAUTION : Tighten the nut and bolt

to prevent unit falling.

WARNING : Make sure that the screws of the terminal are free from looseness.

B1/B2 Series

WARNING : Loose wiring may cause the terminal to overheat or result in unit
malfunction.
A fire hazzard may also exist.
Therefore, be sure all wiring is tightly connected.

Connection method of the connecting cable(Example)

10 Indoor Unit

1(L1) 2(L2)

Lock nut

Conduit

Conduit
mounting
plate

Power Supply

High Voltage

(208/230V)

4(B)

3(A)

Transmission

Installation

• Low static duct type in case of suction from back
side.

• Low static duct type in case of suction from bottom
side.

Air Filter

Air outlet

Panel Rear

Air outlet

Air Filter

Panel Rear

Part name and functions

ENGLISH

Installation Manual 11

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

n After 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

TEST AND CHECK

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)

Union for gas pipe

Refrigerant pipe and thermal

insulator(Local supply)

Union for liquid pipe

Thermal insulator for refrigerant pipe

(Local supply)

Hose clip for thermal insulator

(Local supply)

Felt

Rubber

Insulation

No clearance

Cabinet

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 prevent 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(1-1/4 inch).

•

Be sure to install heat insulation on the drain piping.

Piping material: Polyvinyl chloride pipe inner diometes
Ø 25mm(1 inch) 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 8mm(5/16 inch).

Drain test

Upward
routing
not allowed

Pipe clamp

1/50~1/100

MAX 700mm
(27-9/16 inch)

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

ENGLISH

Installation Manual 13

Installation

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 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, fuse breaking, disturbance by the nor­mal function of an overload protection device.

• Proper starting power is not given to the compressor.

HAND OVER

Teach the customer the operation and maintenance procedures, using the operation manual.
(air filter cleaning, temperature control, etc.)

1/50~1/100

MAX 700mm
(27-9/16 inch)

Flexible drain hoseFlexible drain hoseFlexible drain hose

CAUTION : The supplied flexible drain
hose should not be curved, neither
screwed. The curved or screwed hose
may cause a leakage of water.

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 maintain 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.)

R

e

m

o

t

e

C

o

n

t

r

o

l

l

e

r

T

E

M

P

5feet

(1.5meters)

no

no

no

yes

Remote Controller

TEMP

Remote Controller

TEMP

Fig.1 Typical locations for remote controller

Installation

ENGLISH

Installation Manual 15

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 boardʼs upper and lower, right and left
part.

When separating remote controller from setup
board, as the picture below, after inserting into the
lower separating hole using screw driver and then,
spinning clockwise, remote controller is separated.

- There are two separating holes. Please individually
separate one at a time.

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

16 Indoor Unit

2

3

1

2

3

<Wire guide grooves>

Installation

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
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.

ENGLISH

Installation Manual 17

18 Indoor Unit

Installation

Name and function of wired remote controller(Accessory)

※ Some functions may not be operated and displayed depending on the product type.
※ It will display strange value to the room temperature if wired remote controller is not connected.

Model : PQRCVSL0 (Black Color)

PQRCVSL0QW (White Color)

1. Operation indication screen

2. Set temperature button

•

It will set not room temperature but outlet air temperature.

3. Fan speed button

• Fan Speed have 3 Steps.

• Middle and Low step is same

4. ON/OFF button

5. Opration mode selection button

6. Wireless remote controller receiver

• Some products don't receive the wireless signals.

7. Air flow button

8. Subfunction button

9. Function setting button

10. Ventilation button

11. Reservation

12. Up,down,left,right button

• To check the indoor temperature, press button.

13. Room temperature button

• Displays only the room temperature of the remote
controller perception.

• There is no control of room temperature.

• In case of fresh air intake unit, displays only the
temperature around remote controller.

14. Setting/Cancel button

15. Exit button

1

10

9
8

7

11
12
13

14

15

Please attach the inform label inside of the door.
Please choose proper language depend on your
country.

2
3

4

5

6

Installation Manual 19

ENGLISH

19 Indoor Unit

Installation

Dip Switch Setting of Indoor unit PCB

For Multi V Models, Dip switch 1, 2, 6, 8 must be set OFF.

Function Description Setting Off Setting On Default

SW1

SW2

SW3

SW4

SW5

SW6

SW7

SW8

Communication

Cycle

Group Control

Dry Contact Mode

Installation

Heater linkage

Ventilator linkage

Vane selection
(Console)

Region selection

Etc.

N/A (Default)

N/A (Default)

Selection of Master or Slave

Selection of Dry Contact
Mode

Fan continuous operation

N/A

Selection of Ventilator link­age

Selection of up/down side
Vane

Selection tropical region

Spare

-

-

Master

Wired/Wireless remote

controller

Selection of Manual or Auto

operation Mode

Continuous operation Removall

-

Linkage Removal

Up side + Down side Vane

General model

-

-

-

Slave

Auto

-

-

Working

Up side Vane

Only

Tropical model

-

Off

Off

Off

Off

Off

Off

Off

Off

Installation

Group Control Setting

1. Group Control 1

n Wired remote controller 1 + Indoor units

n Dip Switch in PCB (Cassette and Duct Type 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 stan­dard 2series indoor units or later since Feb. 2009.

- In case of Central controller setting, the Central controller can control indoor units after setting only
the address of master indoor unit.

- Slave indoor unit will be operated like master indoor unit.

- Slave indoor unit can not be individually controlled by Central controller.

- Some remote controller canʼt perform with Dry Contact and Central controller at the same time.
So contact us further information about it.

20 Indoor Unit

LGAP Network System

Master

Master

Slave

Display Error Message

Slave

Only connect serial signal and GND lines

between slave indoor unit

Slave

GND
Signal
12 V

Master Setting Slave Setting

- No. 3 Off - No. 3 On

21 Indoor Unit

Installation

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.

h Master/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.

h It 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

ENGLISH

Installation Manual 21

LGAP Network System

Master

Master

Slave

Donʼt connect serial 12V line

Display Error Message

Slave

Slave

Slave

GND
Signal
12 V

Installation

3. Group Control 3

n Mixture connection with indoor units and Fresh Air Intake Unit

h In case of connecting with standard indoor unit and Fresh Intake Unit, separate Fresh Air

Intake Unit with standard units. (Because setting temperature are different.)

h Other than those, it is same with Group Control 1.

22 Indoor Unit

LGAP Network System

FAU

Master

Display Error Message

Master

FAU

Slave

Master

Master

Slave

GND
Signal
12 V

FAU

Standard Standard

FAU FAU

Standard Standard

FAU

* FAU : Fresh Air Intake Unit
Standard: Standard Indoor Unit

23 Indoor Unit

Installation

4. 2 Remote Control

n Wired remote controller 2 + Indoor unit 1

1. It is possible to connect two wired remote controllers with one indoor unit.

2. Every types of indoor unit is possible to connect two remote controller.

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.

5. In case of any error occurs at indoor unit, display on the wired remote controller.

6. There isn’t limits of indoor unit function.

h Maximum 2wired remote controllers can be connected with 1 indoor unit.

ENGLISH

Installation Manual 23

LGAP Network System

Master

Display Error Message

Master

Slave

Installation

5. Accessories for group control setting

It is possible to set group control by using below accessories.

Indoor unit 2 EA +Wired remote controller Indoor unit 1 EA +Wired remote controller 2EA

h PZCWRCG3 cable used for connection h PZCWRC2 cable used for connection

Slave

Mas te r

Mas ter

PZCWRCG3

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24 Indoor Unit

25 Indoor Unit

How to Set E.S.P?

How to Set E.S.P?

• If you set ESP incorrectly, the air conditioner may malfunction.

• This setting must be carried out by a certificated-technician.

This is the function that decides the strength of the wind for each wind level and because this function is
to make the installation easier.

•

When setting ESP value on the product without very weak wind or power wind function, it may not
work.

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Installation Manual 25

If pressing button long for 3

1

seconds, it enters into remote
controller setter setup mode.

- If pressing once shortly, it enters
into user setup mode. Please press
more than 3 seconds for sure.

Function code,
ESP code

ESP value

If entering into ESP setup mode by using

2

button, it indicates as the picture
below.

ESP step

Function Code ESP value

Select ESP fan step by pressing

3

button. (01: very low, 02: low, 03:
medium, 04: high, 05: power)

Move to ESP value setting by pressing

4

button.
(It is 000 when delivering
from the warehouse.)

Press button to setup ESP value.

5

(It is possible to setup ESP
value from 1 to 255, and 1 is
the smallest and 255 is the
biggest.)

How to Set E.S.P?

26 Indoor Unit

Function code,
ESP code

ESP value

Select ESP fan step again by using

6

button and setup ESP value, as No. 4
and 5, that corresponds each wind flow

Press button to save.

7

Press button to exit.

8

❈ After setup, it automatically gets out of

setup mode if there is no button input
for 25 seconds.

❈ When exiting without pressing set

button, the manipulated value is not
reflected.

27 Indoor Unit27 Indoor Unit

How to Set E.S.P?

Note :

1. The above table shows the correlation between the air rates and E.S.P.

Setting Value

60 6.02(212) 2.25(79) 0.61(21) - ­65 6.95(245) 3.32(117) 0.73(25) 0.54(19) 0.48(16)
70 7.69(271) 5.16(182) 1.19(42) 0.65(22) 0.56(19)
75 84.6(298) 6.93(244) 2.42(85) 0.77(27) 0.63(22)
80 9.5(335) 7.37(260) 3.4(120) 0.87(30) 0.72(25)
85 10.35(365) 8.72(307) 5.33(188) 1.35(47.6) 0.88(31)
90 10.81(381) 9.66(341) 6.75(238) 3.15(111) 0.98(34)

95 11.57(408) 10.31(364) 8.56(302) 4.73(167) 1.03(36)
100 12.58(444) 11.22(396) 9.75(344) 7.46(263) 2.31(81)
105 13.31(470) 12.27(433) 10.89(384) 8.64(305) 5.01(176)
110 14.2(501) 13.24(467) 12.15(429) 10.49(370) 7.7(271)
115 14.82(523) 13.92(491) 12.64(446) 11.16(394) 9.48(334)

0(0) 1(3.93) 2(7.87) 3(0.11) 4(0.15)

Static Pressure(mmAq (in.Aq))

Setting Value

65 10.07(355) 6.9(243) 0.82(28) - -

70 11.39(402) 8.49(299) 2.2(77) - -

75 12.01(424) 9.79(345) 4.2(148) - -

80 13.21(466) 11.03(389) 5.92(209) 0.92(32) -

85 14.24(502) 12.36(436) 9.41(332) 2.1(74) -

90 15.04(531) 13.34(471) 10.8(381) 5.29(186) 1.01(35)

95 16.02(565) 14.63(516) 12.5(441) 7.59(268) 1.34(47)
100 17.11(604) 15.56(549) 13.66(482) 11.53(407) 5.35(188)
105 17.99(635) 16.53(583) 15.17(535) 12.35(436) 7.67(270)
110 19.04(672) 17.71(625) 16.22(572) 14.23(502) 10.45(369)
115 19.77(698) 18.62(657) 17.1(603) 15.23(537) 13.25(467)
120 20.94(739) 19.92(703) 18.56(655) 16.98(599) 14.66(517)
125 21.97(775) 20.56(726) 19.25(679) 17.68(624) 16.06(567)
130 22.83(806) 21.98(776) 20.75(732) 19.32(682) 17.73(626)

0(0) 1(3.93) 2(7.87) 3(0.11) 4(0.15)

Static Pressure(mmAq (in.Aq))

ARNU073B1G2, ARNU093B1G2, ARNU123B1G2, ARNU153B1G2

ARNU183B2G2, ARNU243B2G2

(Unit;cmm(cfm))

(Unit;cmm(cfm))

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Installation Manual 27

28 Indoor Unit