LG LS120HE, LS180HE, LS090CE, LS120CE, LS240CE User Manual

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LG

LG

Room Air Conditioner

INSTALLATION MANUAL

ESPAÑOL FRANÇAIS ENGLISH

IMPORTANT

•Please read this instruction manual completely before installing the product.

•When the power cord is damaged, replacement should be performed by authorized personnel only.

•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.

Room Air Conditioner Installation Manual

TABLE OF CONTENTS

Installation
Requirements
Safety Precautions .........................	3
Introduction .....................................	9
Symbols Ued in This Manual......	9
Features .......................................	9
Installation .....................................	10
Installation Parts ........................	10
Installation Tools ........................	10
Installation Map..........................	11
Confirm The Refrigerant ...........	12
Select The Best Location .........	13
Piping Length And Elevation.....	14
How To Mount Installation Plate..	15
Drill a Hole In The Wall..............	15
Flaring Work...............................	16
Connecting The Piping..............	17
Connection Of The Drain Hose...	22
Connection Of Piping -Outdoor...	22
Connection Of The Cable .........	23
Checking The Drainage ............	25
Forming The Piping...................	26
Air Purging .................................	27
Air Purging With Vacuum Pump..27
Charging.....................................	29
Test Running .................................	30

Required Parts

Installation plate

Four type "A" screws

Connecting cable

Pipes: Suction line Evaporator line (Refer to page 13)

Insulation materials

Additional drain pipe

(Outer Diameter .........15.5mm(0.61in))

Two type "B" screws

Required Tools

Level gauge

Screwdriver

Electric drill

Hole core drill(ø70mm(2.76in))

Flaring tool set

Specified torque wrenches 4.2kg.m, 6.6kg.m

(different depending on model No.) (Refer to page 17)

Spanner .....................Half union

A glass of water

Screw driver

Hexagonal wrench(4mm(0.16in))

Gas Leak Detector

Vacuum pump

Manifold Gauge

Owner's manual

Thermometer

Remote Control Holder

2 Room Air Conditioner

Safety Precautions

To prevent the injury of the user or other people and property must be followed.

■Incorrect operation due to ignoring instruction will cause harm or classified by the following indications.

This symbol indicates the possibility of

This symbol indicates the possibility of

■ The meanings of the symbols used in this manual are as shown

Be sure not

Be sure to follow the

Safety Precautions

ENGLISH

■ Installation

Do not use damaged power cords, plugs, or a loose socket.

• There is risk of fire or electric shock.

Install the panel and the cover of control box securely.

For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.

• There is risk of fire or electric shock.

Do not modify or extend the power cord.

• There is risk of fire or electric shock.

• There is risk of fire or electric shock.

Always use the power plug and socket with the ground terminal.

• There is risk of electric shock.

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

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

Installation Manual 3

Safety Precautions

Be cautious when unpacking and	For installation, always contact
installing the product.	the dealer or an Authorized
	Service Center.

Do not install the product on a defective installation stand.

• Shape edges could cause injury. Be	• There is risk of fire, electric shock,	• It may cause injury, accident, or
especially careful of the sharp edges.	explosion, or injury.	damage to the product.

Be sure the installation area does not deteriorate with age.

Install the indoor unit on the wall where the height from the floors more then 8ft(2.4m)

Do not handle the pipe by yourself(customer)

•If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.

• There are sharp moving parts that	• High-Pressure refrigent may cause
could cause personal injury.	personal injury.

8ft(2.4m)

■ Operation

Use a dedicated outlet for this	Grasp the plug to remove the
appliance.	cord from the outlet. Do not
	touch it with wet hands.

Do not allow water to run into electric part.

• There is risk of fire or electric shock.	• There is risk of fire or electric shock.	• There is risk of fire, failure of the
		product, and/or electric shock.

4 Room Air Conditioner

		Safety Precautions
Do not place a heater or other	Do not let the air conditioner run	Do not store of use flammable
appliances near the power cable.	for a long time when the	gas or combustibles near the air
	humidity is very high and a door	conditioner.
	or a window is left open.
• There is risk of fire, failure of the product,	• Moisture may condense and wet or	• There is risk of fire or product failure.
and/or electric shock.	damage furnishings.

Wax	Thinner

ENGLISH

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

•Oxygen deficiency could occur.

•Some ventilation by opeing window is necessary for the fresh air.

Stop operation and close any window in storm or hurricane. before the hurricane arrives.

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

When flammable gas leaks, turn off the gas and open a window for ventilation before turning the product on. Do not use the telephone or turn switches on or off.

• There is risk of explosion or fire.

Do not open the inlet grill 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.

Unplug the unit if strange sounds odors or smoke comes from it.

•There is risk of fireproduct failure and/or electric shock.

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

• There is risk of electrical shock.

Installation Manual 5

Safety Precautions

Ventilate the product from time to	Unplug the appliance before
time when operating it together	performing cleaning or
with a stove, etc.	maintenance.
• There is risk of fire or electrical shock.	• There is risk of electric shock.

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

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

Take care to ensure that nobody fall onto the outdoor unit.

• There could result in personal injury and

hands or other objects through the air while the air conditioner is plugged

and moving parts that could cause

	hose to ensure		Keep level even when installing
	away		the product.
	may cause water		• To avoid vibration or water leakage.

product failure.

leakage.

90˚

6 Room Air Conditioner

Safety Precautions

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	Do not install the product where
and transport the air conditioner	it will be exposed to sea wind
	(salt spray) directly.
• Avoid personal injury.	• It may cause corrosion in the product.
	Corrosion, particularly on the
	condenser and evaporator fins, could
	cause product malfunction or
	inefficient operation.

ENGLISH

Do not direct airflow at room occupants.

• This could damage your health.

Use a soft cloth to clean.

Do not use harsh detergents, solvents, etc.

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

Do not 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 touch the metal parts of the product when removing the air filter. They are very sharp!

• There is risk of personal injury.

Do not block the inlet or outlet of air flow.

• It may cause product failure.

Do not step on or put anything on the product. (outdoor unit)

•There is risk of personal injury and failure of product.

Installation Manual 7

Safety Precautions

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

Do not drink the water drained from the unit.

• A dirty filter reduces the efficiency of the air conditioner and	• It is not sanitary and could cause serious health issues.
could cause product malfunction or damage.

Use a firm stool or ladder when cleaning or maintaining the air conditioner.

• Be careful and avoid personal injury.

Replace all the batteries in the remote.

• There is risk of fire or explosion.

Do not recharge or disassemble the batteries. Do not dispose of 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.

8 Room Air Conditioner

Introduction

Introduction

SymbolsUsedInThisManual

This symbol alerts you to the risk of electric shock.

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

NOTICE This symbol indicates special notes.

Features

ENGLISH

Air Inlet

Air Filter

Air Intake

Vents

Air Outlet

Vents

Base Plate

Front Panel

Signal Receptor

Air Intake Vents

Connecting

Connecting Wires

Wires

Piping	Piping

Drain Hose

Drain Hose
Air Outlet Vents	Base Plate

Installation Manual 9

Installation

Installation

Read carefully, and then follow step by step.

InstallationParts

Installation plate

Type "A" screw and plastic anchor

Type "B" screw

Remote Control Holder

InstallationTools

Figure	Name	Figure	Name
	Screw driver		Ohmmeter

Electric Drill

Hexagonal wrench

Measuring Tape, Knife

Ammeter

	Hole Core Drill	Gas Leak Detector
	Spanner	Thermometer,
		Level

Torque wrench

Flaring Tool Set

10 Room Air Conditioner

Installation

InstallationMap

NOTICE

Installation parts you should purchase.

	Installation Plate
	Sleeve
	Bushing-Sleeve
	Putty(Gum Type Sealer)
	Bend the pipe as closely
	on the wall as possible,
	but be careful that it
Air Discarge	doesn't break.
Vertical Air deflector
Operation Indication Lamps/	Vinyl tape(Wide)
Signal Receptor
	• Apply after carrying out a
Forced Operation Button	drainage test.
	• To carry out the drainage
Saddle	test, remove the air filters
	and pour water into the heat
	exchanger.

ENGLISH

	Air Inlet Vents	Gas side piping
		Liquid side piping
	Air Outlet Vents	Additional drain pipe
		Drain Hose
		Connecting cable
		Base Plate

NOTE: refrigerant line wall thickness must be at least 0.8 mm (0.031 inch)

Installation Manual 11

Installation

ConfirmTheRefrigerant

1.Check the quality label on the indoor and outdoor unit.

2.Make certain that the refrigerant is R-410A.

NOTICE

THIS PRODUCT CONTAINS R-410A REFRIGERANT

1)Different compressor oil

-R-410A(Polyol ester) / R-22(Mineral).

-Do not mix the existing mineral oil.

-Do not apply used pipe, tools and gauges covered with the existing mineral oil.

2)Absorption of moisture

-Compressor’s oil has the high absorption rate of moisture.

3)Composition

-R-410A(R32:R125=50:50wt%).

NOTE: Never mix with other refrigerants

Example : Split type 12,000 Btu/h
120
	100
100		93	89
				84
80					76
60
40
20
0
R-410A	100%	70%	50%	30%	0%
R-22	0%	30%	50%	70%	100%

4)High pressure.

-1.6 times higher than R-22.

-High Pressure refrigerant may cause personal injury.

	Boiling Pt.(°C)	Vapor pressure(25°C)(kg f/cnf)	Vapor density(25°C)(kg/m2)
R-410A	-51.4	15.9	64
R-22	-40.8	9.6	44.4

Do not handle the pipe by yourself (customer) High-pressure refrigerant may cause personal injury. - manifold gauge ,charging and any piping tools must be dedicated to R-410A systems.

12 Room Air Conditioner

Installation

SelectTheBestLocation

Indoor unit

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 that the space around the left and right of the unit is more than 30cm(11.8in). The unit should be installed as high on the wall as possible, allowing a minimum of 12cm(4.7in) from ceiling.

6.Use a stud finder to locate studs to prevent unnecessary damage to the wall.

More than 30cm(11.8in)

More than 30cm(11.8in)

More than

ENGLISH

Install the indoor unit on the wall where the height from the floors more than 2.3meters(7.6ft). A minimum pipe run of 7.5meters(24.6ft) is required to minimize vibration and excessive noise.

Outdoor unit

1.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.

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

2.Ensure that the space around the back and sides is more than 10cm(3.9in). The front of the unit should have more than 70cm(27.6in) of space.

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

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

Rooftop Installations

More than 60cm(23.6in)

More than More than

10cm(3.9in)

10cm(3.9in)

	More than	More than
	70cm(27.6in)
		60cm(23.6in)

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.

If the outdoor unit is installed on roof structures or walls, this may result in excessive noise and vibration, and may be also classed as non serviceable installation.

Installation Manual 13

Installation

PipingLengthAndElevation

	Capacity				Pipe Size
	(Btu/h)				Suction	Evap
	9k				3/8"	1/4"
					1/2"	1/4"
	12k				1/2"	1/4"
	18k				1/2"	1/4"
					5/8"	1/4"
	24k				5/8"	1/4"
	Indoor unit
					A
		B			Outdoor unit

	Standard	Max.	Max.	Additional Refrigerant
	Length	Elevation	length
				g/m(oz/ft)
	m(ft)	B m(ft)	A m(ft)
	7.5(25)	7.5(25)	15(49)	20(0.22)
	7.5(25)	7.5(25)	15(49)	20(0.22)
	7.5(25)	7.5(25)	15(49)	20(0.22)
	7.5(25)	15(49)	30(98)	20(0.22)
	7.5(25)	7.5(25)	15(49)	20(0.22)
	7.5(25)	7.5(25)	15(49)	20(0.22)
		Outdoor unit		Outdoor unit
	A		Oil trap
	Indoor unit	B	Indoor	B

In case more than 5m(16.4ft)

•Capacity is based on standard length and maximum allowance length is on the basis of reliability.

•Oil trap should be installed every 5~7meters (16.4~23.0ft).

14 Room Air Conditioner

Installation

HowToMountInstallationPlate

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.

Chassis

Hook

Type “A”

ENGLISH

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.

CHASSIS		Distance (mm)
(Grade)	A	B	C	D
S4	50	105	59	105
SE	65	110	85	110
S5	95	122	235	122

D		Installation plate	B
Ø70mm	C		A	Ø70mm
	Left rear piping		Right rear piping

DrillaHoleInTheWall

• Drill the piping hole with a ø70mm(2.76in)
hole core drill. Drill the piping hole at either		WALL
the right or the left with the hole slightly	Indoor	Outdoor
slanted to the outdoor side.
		5-7mm	(0.2~0.3")

Installation Manual 15

Installation

FlaringWork

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.

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

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

3.Cut the pipes a little longer than measured distance.

4.Cut the cable 1.5m(59.1in) longer than the pipe length.

Copper		Slanted Uneven Rough
pipe	90¡

Burrs removal

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

2.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.

Outside diameter			A
mm	inch	mm		inch
Ø6.35	1/4	0~0.5		0~0.020
Ø9.52	3/8	0~0.5		0~0.020
Ø12.7	1/2	0~0.5		0~0.020
Ø15.88	5/8	0~1.0		0~0.039

Pipe

Reamer

Point down

Flare nut

Copper tube

Firmly hold copper pipe in a die in the dimension shown in the table above.

		"A"	Handle
	Bar		Bar
			Yoke
			Cone

Copper pipe

Clamp handle

Red arrow mark

16 Room Air Conditioner

Installation

ConnectingThet Piping

Indoor

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

2. Remove the plastic tubing retainer(see the illustration by) and pull the tubing and drain hose away from chassis.

3. Replace only the plastic tubing holder 1, not the holder 2 in the original position.

ENGLISH

For left rear piping

Route the indoor tubing and the drain hose in the direction of rear left.

Insert the connecting cable into the indoor unit from the outdoor unit through the piping hole.

•Do not connect the cable to the indoor unit.

•Make a small loop with the cable for easy connection later.

1	2
	Connecting
	cable
	Drain pipe

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.

NOTE: 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.

Indoor unit installation

•Hook the indoor unit onto the upper portion of the installation plate.(Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate.) Ensure that the hooks are properly seated on the installation plate by moving it left and right.

Indoor unit

Spacer

Installation plate 8cm

Installation Manual 17

Installation

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

•Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants.

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

Indoor unit tubing

Flare nut Pipings

• Tighten the flare nut with a wrench.

Indoor unit tubing

	Connection pipe		Torque wrench
	Flare nut
	Spanner (fixed)
	Outside diameter		Torque
	mm	inch
	Ø6.35	1/4	1.8
	Ø9.52	3/8	4.2
	Ø12.7	1/2	5.5
	Ø15.88	5/8	6.6

• Mount the clamp on the boss with a type "B"

screw.(SE-H/P: 9k, 12k	C/O: 12k)
Type "B" screw	Drain hose
Clamp
Boss

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

Drain pipe

Indoor unit drain hose

Adhesive Vinyl tape(narrow)

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.

Plastic bands	Insulation material

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

	Connection	Indoor
		unit pipe
	pipe
	Vinyl tape	Wrap with vinyl tape
	(wide)

•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.

Wrap with vinyl tape

Pipe

Vinyl tape(wide)

Drain hose

For right rear piping

Route the indoor tubing and the drain hose to the required piping hole position.

Drain hose

18 Room Air Conditioner

Installation

Insert the connecting cable into the indoor unit.

•Don't connect the cable to the indoor unit.

•Make a small loop with the cable for easy connection later.

Tape the drain hose and the connecting cable.

• Connecting cable

Tape

Connecting pipe

Drain hose

Connecting cable

Indoor unit installation

•Hook the indoor unit onto the upper portion of the installation plate.(Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate.) Ensure that the hooks are properly seated on the installation plate by moving it left and right.

Connecting

cable

Drain hose

		Spanner (fixed)
		Flare nut
Torque wrench		Connection pipe
Indoor unit tubing
Outside diameter		Torque
Ø6.35	1/4	1.8
Ø9.52	3/8	4.2
Ø12.7	1/2	5.5
Ø15.88	5/8	6.6

• Mount the clamp on the boss with a type "B"

screw.(SE-H/P: 9k, 12k	C/O: 12k)
Type "B" screw	Drain hose
Clamp
Boss

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

Drain hose

Indoor unit drain hose

Adhesive Vinyl tape (narrow)

Wrap the insulation material around the connecting portion.

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

•Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants

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

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

Plastic bands	Insulation material

Indoor unit tubing

Flare nut Pipings

• Tighten the flare nut with a wrench.

ENGLISH

Installation Manual 19

Installation

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

Reroute the pipings and the drain hose across the back of the chassis.

	Connection	Indoor
		unit piping
	pipe
	Vinyl tape	Wrap with vinyl tape
	(wide)
		Pipe
		Vinyl tape(narrow)
	Connecting cable

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

Pipe

Drain hose

Vinyl tape(narrow)

Piping passage piping hole

Reroute the pipings and the drain hose across the back of the chassis.

Connecting

cable

Drain hose

Wrap with

vinyl tape(wide)

20 Room Air Conditioner

Installation Information. For left piping. Follow the instruction below.

Correct case

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

Incorrect case

• Following bending type from right to left may cause damage to the tubing.

Installation

ENGLISH

Installation Manual 21

Installation

ConnectionngOftheThePipingDrainHose

•The drain hose can be connected at two different positions. Use the most convenient position and, if necessary, exchange the position of the drain pan, rubber cap and the drain hose.

Drain pan

Rubber capDrain hose

Exchange if necessary

•Remove the drain hose.

•Securely insert both the rubber plug and drain hose into the drain outlets.

Be sure the rubber the cap is securely fastened so that there is no leakage.

2

3

1

ConnectionngOfthePiping-Outdoor

Put a couple drops of refrigerant oil on the face

of the flare before assembling taking care not to Outdoor unit add any contaminants.

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

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.

	Outside diameter		Torque
	mm	inch
Ø6.35		1/4	1.8
	Ø9.52	3/8	4.2
	Ø12.7	1/2	5.5
	Ø15.88	5/8	6.6
	Ø19.05	3/4	6.6

Suction Line piping (Bigger diameter)

Evaporator Line piping

(Smaller

diameter)

Torque wrench

22 Room Air Conditioner

Installation

ConnectionngtheOf ThePipingCable

1. Remove the cover control from the unit by	Wiring Diagram
loosening the 3 screws.
	Connecting cable(Low voltage) b

2.Dismount caps on the conduit panel.

3.Temporarily mount the conduit tubes on the conduit panel.

4.Properly connect both the power supply and low voltage lines to the corresponding terminals on the terminal block.

5.Ground the unit in accordance with local codes.

6.Be sure to size each wire allowing several inches longer than the required length for wiring.

7.Use lock nuts to secure the conduit tubes.

NOTE

size for this unit is 1/2"

on connecting depending on are using.

•Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit(size of wire and wiring method, etc).

•Every wire must be connected firmly.

•No wire should be allowed to touch refrigerant tubing, the compressor or any moving parts.

Power Supply

Model	Power source	AWG(MIN.)		Fuse or breaker
				Capacity
9K	1ø, 115V	14	18	15A
12K	1ø, 115V	14	18	20A
18K	1ø, 230/208V	14	18	20A
24K	1ø, 230/208V	12	18	25A

Indoor Unit	Outdoor Unit
Terminal	Terminal
(4P)	(6P)
1		1
2		2
3		3
4		4
	L1* 5
	L2	6

G

* L1 is neutral for 115V models.

Power supply a

To branch circuit

Ground

NOTE

1.	field wiring.

2.the high and low voltage line.

3.electrical wiring capable of

temperatures up to 167°F.

4.waterproof connection cable

300V for the connection between unit.

Type STOW)

Conduit panel

Connecting

cable

Power supply cord

Cover control

ENGLISH

Installation Manual 23

Installation

	CAUTION
	the above conditions, prepare the wiring as follows:
1)	individual power circuit specifically for the air conditioner. As for
	be guided by the circuit diagram posted on the inside of control
2)	the wiring in the casing of electrical fittings are liable to
	to which the unit is subjected during the course of
	them and make sure that they are all tightly fastened. (If they
	burn-out of the wires.)
3)	source.
4)	capacity is sufficient.
5)	voltage is maintained at more than 90 percent of the rated
	the name plate.
6)	thickness is as specified in the power source specification.
	relation between cable length and thickness.
7)	circuit breaker in a wet or moist area.
8)	be caused by voltage drop.
	switch, which will damage the contact point, open fuse, disturbance of the
	overload.
9)	from a power supply shall be incorporated in the fixed
	air gap contact separation of at least 3mm(0.12in) in each
	.

24 Room Air Conditioner

	Installation
	Checking The Drainage
	• Pour a glass of water on the drain pan.	ENGLISH
	• Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain
	exit.
	Connecting area
	drain hose
	Leakage
	checking
	Drain pan
	Drain
	hose
	Leakage
	checking

Drain piping

• The drain hose should point downward for easy drain flow.

Downward slope

• Avoid these situations.

	Do not raise		Accumulated
			drain water
					Tip of drain hose	Less than
			Air
						50mm gap
					dipped in water
Water		Water	Waving	Water
leakage		leakage		leakage	Ditch

Installation Manual 25

Installation

FormingThePiping

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

•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.

•Tape the piping, drain hose and connecting cable from down to up.

•Secure the tapped piping along the exterior wall using saddle or equivalent.

Seal small openings around pipings with a gum type sealer.

Taping

Drain hose

Pipings

Connecting cable

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

•Tape the piping and connecting cable from down to up.

•Secure the taped piping along the exterior wall. Form a trap to prevent water entering the room.

•Fix the piping onto the wall by saddle or equivalent.

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

Trap

Trap

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

26 Room Air Conditioner

Installation

AirPurging

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, the indoor unit and tubing between the indoor and outdoor unit must be leak tested and evacuated to remove any noncondensables and moisture from the system.

AirpurgingWithVacuumPump

Preparation	• Do a leak test of all joints of the tubing(both indoor
	and outdoor) and both gas and liquid side service
• Check that each tubing(both liquid and gas side	valves.
tubes) between the indoor and outdoor units have	Bubbles indicate a leak. Be sure to wipe off the soap
been properly connected and all wiring for the test	with a clean cloth.
run has been completed. Remove the service	• After the system is found to be free of leaks, relieve
valve caps from both the gas and the liquid side	the nitrogen pressure by loosening the charge hose
on the outdoor unit. Note that both the liquid and	connector at the nitrogen cylinder. When the system
the gas side service valves on the outdoor unit are	pressure is reduced to normal, disconnect the hose
kept closed at this stage.	from the cylinder.
Leak test
• Connect the manifold valve(with pressure	unit	Manifold valve

gauges) and dry nitrogen gas	cylinder	to	this	Pressure
service port with charge hoses.				gauge	Lo	Hi

CAUTION
a manifold valve for air	Charge hose
	Outdoor unit
not available, use a stop
purpose. The "Hi" knob of	Nitrogen gas
valve must always be kept
	cylinder(in vertical
	standing position)

•system to no more than 150 P.S.I.G.

gas and close the cylinder valve reading reached 150 P.S.I.G. Next, 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.

ENGLISH

Installation Manual 27

Installation

Soap water method

(1)Remove the caps from the gas side and liquid side valves.

(2)Remove the service-port cap from the gas side valve.

(3)To open the gas side valve turn the valve stem counterclockwise approximately 90°, wait for about 2~3 seconds, and close it.

(4)Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping.

(5)If bubbles come out, the pipes have leakage.

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.

Required time for evacuation when 30 gal/h vacuum pump is used

If tubing length is less	if tubing length is longer
than 10m (33 ft)	than 10m (33 ft)
10 min. or more	15 min. or more

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

Finishing the job

•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.

•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.

Suction Line

Evaporator Line

3-way valve (Close)

3-way valve (Open)

Cap

Hexagonal wrench

Outdoor unit

Manifold

Pressure gauge

Open Close

Vacuum pump

28 Room Air Conditioner