LG LC240CP, LC340CP User Manual

website http://www.lgservice.com

LG

LG Casstte Type

Air Conditioner

INSTALLATION MANUAL

ESPAÑOL FRANÇAIS ENGLISH

IMPORTANT

•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.

Cassette Type Air Conditioner Installation Manual

TABLE OF CONTENTS

Installation
Requirements
Safety Precautions .....	3
Installation of Indoor,
Outdoor unit ................	6
Ceiling opening
dimensions and hanging
bolt location..................	8
The indoor unit
installation...................	9
Remote controller
installation...................	9
Wiring connection ....	11
Connecting Pipes to
the Indoor Unit ..........	13
Installation of
decorative panel .......	15

Required Parts

•Connecting cable

•Four Type "A" Screw

•Hanging Bolt

(W 3/8 or M10 length 650mm)

•Pipes: Gas side Liquid side

•Insulated drain hose

•Additional Drain hose (Inner Dia.............32mm)

Required Tools

•Level

•Screw driver

•Electric drill

•Hole core drill (ø70mm)

•Flaring Tools set

•Torque Wrenches

•Hexagonal Wrench (4mm, 5mm)

•Gas-leak detector

Indoor unit drain piping
....................................	16
Test running ..............	19
	• Owner’s Manual
	• Thermometer
Optional operation....	21

2 Cassette type Air Conditioner

Safety Precautions

Safety Precautions

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

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

WARNING	This symbol indicates the possibility of death or serious injury.
CAUTION	This symbol indicates the possibility of injury or damage.

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

Be sure not to do.

Be sure to follow the instruction.

WARNING

■ 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 install a dedicated circuit and breaker.

•Improper wiring or installation may cause fire or electric shock

Always ground the product.

•There is risk of fire or electric shock.

Use the correctly rated breaker or fuse.

•There is risk of fire or electric shock.

ENGLISH

Installation Manual 3

Safety Precautions

Do not modify or extend the power cable.

Be cautious when unpacking and installing the product.

• There is risk of fire or electric shock.

•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.

Do not install the product on a defective installation stand.

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

•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

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.

■ Operation

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

• There is risk of fire or failure of product.

Gasolin

4 Cassette type Air Conditioner

			Safety Precautions
			CAUTION
	■ Installation
	Always check for gas (refrigerant)		hose to ensure that water is
	installation or repair of product.		properly.
	• Low refrigerant levels may		may cause water leakage.

Keep level even when installing	the product where the noise or hot air
	unit could damage the
	.
• To avoid vibration or water	a problem for your neighbors.

ENGLISH

90°

Use two or more people to lift product.

• Avoid personal injury.

the product where it will be sea wind (salt spray) directly.

corrosion on the product. particularly on the condenser and fins, could cause product

or inefficient operation.

Installation Manual 5

Installation of Indoor, Outdoor Unit

Installation of Indoor, Outdoor Unit

Selectionofthebestlocation

1.Indoor unit

•There should not be any heat source or steam near the unit.

•There should not be any obstacles to prevent the air circulation.

•A place where air circulation in the room will be good.

•A place where drainage can be easily obtained.

•A place where noise prevention is taken into consideration.

•Do not install the unit near the door way.

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

•The indoor unit must keep the maintenance space.

Ceiling				more	Ceiling Board
Ceiling Board				or
				30
						less
50 or		or more			50 or	30 or
more	100		250	less	more
			Above	330 or		Unit:cm
				Floor

	2. Outdoor unit	More	Sunroof
		30cm
	• If an awning is built over the unit to prevent
	direct sunlight or rain exposure, be careful		More than
	that heat radiation from the condenser is	Fence	30cm
	not restricted.
	• There should not be any animals or plants	or
		obstacles
	which could be affected by hot air		More than 50cm
	discharged.		More than 70cm
	• Ensure the spaces indicated by arrows
	from the wall, ceiling, fence or other
	obstacles.
			Sunroof
		More than
		50cm

Fence obstaclesor

More than 350cm

More than 50cm

More than 100cm

6 Cassette type Air Conditioner

Installation of Indoor, Outdoor Unit

3. Piping length and the elevation
Capacity	Pipe Size		Length A(m)			Elevation B(m)				*Additional
	(Diameter:Ø)
										refrigerant(g/m)
	Gas	Liquid	Standard	Max.		Standard		Max.
24k Btu/h	1/2"(12.7mm)	1/4"(6.35mm)	7.5(25')	30(100')		5(16')		15(50')		20(0.22 oz./ft.)
34k Btu/h	5/8"(15.88mm)	1/4"(6.35mm)	7.5(25')	35(115')		5(16')		20(66')		30(0.32 oz./ft.)

ENGLISH

Indoor unit		Outdoor unit
		Outdoor unit
	A	Oil trap
Outdoor unit		B
Indoor unit		B
		Indoor unit

If piping length is more than 5m

CAUTION:

•Rated performance for refrigerant line length of:7.5m

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

•Improper refrigerant charge may result in abnormal cycle.

•Oil trap should be installed every 10 meters.

Installation Manual 7

Ceiling opening dimensions and hanging bolt location

Ceiling opening dimensions and hanging bolt location

• The dimensions of the paper model for installing are the same as those of the ceiling opening dimensions.

•Select and mark the position for fixing bolts and piping hole.

•Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose.

•Drill the hole for anchor bolt on the wall.

CAUTION:

•This air-conditioner uses a drain pump.

•Horizontly install the unit using a level gauge.

•During the installation, care should be taken not to damage electric wires.

875 (Ceiling opening)

45	785 (Hanging bolt)	45
		101.5	(Ceiling opening)
	840 Unit size	672 (Hanging bolt)
	Unit size
	840	101.5	875

Unit:mm

Ceiling

Level gauge

Ceiling board

NOTICE

•Thoroughly study the following installation locations:

1.In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying, dispersing of water drops, drain pump malfunction, etc.

In these cases, take the following actions:

•Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so that it draws oily steam which should not flow into the suction of the air conditioner.

•Make enough distance from a cooking room to install the air conditioner in such a place where it may not suck in oily steam.

Air conditioner

Take enough distance

Use the ventilation fan for smoke-collecting hood with sufficient capacity.

Cooking table

2.Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is in suspension in factories, etc.

3.Avoid places where inflammable gas is generated, flows in, is stored or vented.

4.Avoid places where sulfurous acid gas or corrosive gas is generated.

5.Avoid places near high frequency generators.

8 Cassette type Air Conditioner

The Indoor Unit Installation

The Indoor Unit Installation

Hanging bolt (W3/8 or M10)

Nut (W3/8 or M10)

Spring washer (M10)

Ceiling

Keep the length of the bolt

Air Conditioner body

150mm

Flat washer for M10

from the bracket to 40mm

(accessory)

Ceiling board

Ceiling board

Flat washer for M10

(accessory)

Paper model

Set screw of

Nut

for installation

paper model (4 pieces)

	(W3/8 or M10)
	Adjust the same height	Open the ceiling board
		along the outer edge of the
		paper model

• The following parts is option.

Hanging Bolt	- W 3/8 or M10
Nut	- W 3/8 or M10
Spring Washer - M10
Plate Washer	- M10

CAUTION: Tighten the nut and bolt to prevent unit falling.

•Drill the piping hole on the wall slightly tilted to the outdoor side using a Ø 70 hole-core drill.

	Wall
Indoor	Outdoor
	5~7mm

ENGLISH

Remote Controller Installation

•Although the room temperature sensor is in the indoor unit, the remote controller should be installed in such places away from direct sunlight and high humidity.

Installation of the remote controller

•Select places that are not splashed with water.

•Select control position after receiving customer approval.

•The room temperature sensor is built in the indoor unit.

•This remote controller equipped with liquid crystal display. If this position is higher or lower, display is difficult to see.(The standard height is 1.2 ~ 1.5m high)

Routing of the remote controller cord

•Keep the remote controller cord away from the refrigerant piping and the drain piping.

•To protect the remote controller cord from electrical noise, place the cord at least 5cm away from other power cables (audio equipment, television set, etc.)

•If the remote controller cord is secured to the wall, provide a trap at the top of the cord to prevent water droplets from running.

Installation Manual 9

Remote Controller Installation

WiredRemoteControlInstallation

DISASSEMBLING

Front case			• Separate the under plate from Remote control box.
The	lower
		part

Lever carefully	Remote control
the box open	box body
using a screw
driver, etc.

• Fix the under plate on the wall

Face of wall Under plate

Screw (accessory)

ELECTRICAL WIRING

(Main board)

CN REMO

Wire and make sure that terminal numbers are matched on unit side and remote controller side.

•Fix the cord clamps on the wall by

ø3 tapping screws (accessory).

•Fix the remote control cord.

Cord clamp (accessory)

Remote controller

The maximum length of the cord is 100m. If the length of the cord exceeds 50m, use a wire size greater than 0.5mm2.

RemoteControlPreparation

HOW TO MOUNT ONTO A WALL

HOW TO INSERT BATTERIES

Remove the battery cover from the remote controller.

•Slide the cover according to the arrow direction.

Insert the two batteries.

•Be sure that the (+) and (-) directions are correct.

•Be sure that both batteries are new.

Re-attach the cover.

• Slide it back into position.

•Do not use rechargeable batteries, such batteries differ from standard dry cells in shape, dimensions, and performance.

•Romove the batteries from the remote controller if the air conditioner is not going to be used for some long time.

10 Cassette type Air Conditioner

Wiring Connection

Wiring Connection

• Open the control box cover and connect the Remote controller cord and Indoor power wires.

	power cord	Control box cover
	Remote
	controller	[Air inlet side view]
	cord
		Control box cover screw

24k/34k Btu/h (1Ø)

• Cooling & Heating type

Terminals on the indoor unit		1(L) 2(N)			3		4	5
Terminals on the outdoor unit	1(L) 2(N)	1(L) 2(N)			3		4	5
POWER
INPUT

CAUTION

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

NORMAL CROSS-SECTIONAL AREA

	Capacity	1 Phase
	24k Btu/h	2.1mm2
G	34k Btu/h	3.3mm2
	N/Y
	L
	20mm

The connecting cable connected to the indoor and outdoor unit should be complied with the following specifications (Rubber insulation, type H05RN-F approved by HAR or SAA).

	NORMAL
	CROSS-SECTIONAL
G	AREA 2.1mm2 (24k/34k)
	N/Y
	L
	20mm

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

WARNING:

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

ENGLISH

Installation Manual 11

Wiring Connection

ElectricalWiring

1.All wiring must comply with LOCAL REGULATIONS.

2.Select a power source that is capable of supplying the current required by the air conditioner.

3.Feed the power source to the unit via a distribution switch board designed for this purpose.

4.The terminal screws inside the control box may be loose due to vibration during transport. Check the screws for loose connection.

(Running the air conditioner with loose connection can overload and damage electrical components.)

5.Always ground the air conditioner with a grounding wire and connector to meet the LOCAL REGULATION.

Main power source

Use circuit breaker

Refrigerant pipe

ConnectingthecabletoOutdoorUnit

1.Remove the Cover control from the unit by loosening a screw.

Connect the wires to the terminals on the control board individually as 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.

Outdoor unit

Terminal block
Over 5mm
(0.2")	Conduit panel
	Connecting
	cable
	Power supply
	cord
Cover control

12 Cassette type Air Conditioner

Connecting Pipes to the Indoor Unit

Connecting Pipes to the Indoor Unit

PreparationofPiping

Main cause of gas leakage is defect in flaring
work. Carry out correct flaring work in the	Copper
following procedure.			Slanted	Uneven Rough
	tube	90°
1. Cut the pipes and the cable.
• Use the accessory piping kit or the pipes
purchased locally.
• Measure the distance between the indoor			Pipe
and the outdoor unit.
			Reamer
• Cut the pipes a little longer than measured
distance.
• Cut the cable 1.5m longer than the pipe		Point down
length.

2.Burrs removal

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

• Put the end of the copper tube/pipe to	Flare nut
downward direction as you remove burrs in
order to avoid to let burrs drop in the tubing.	Copper tube

3. Putting nut on

•Remove flare nuts attached to indoor and outdoor units, than put them on pipe/tube having completed burr removal.

(Not possible to put them on after flaring work)

4. Flaring work						Handle
• Carry out flaring work using dedicated			Bar	Bar
flaring tool for R-410A as shown below.				"A"		Yoke
Outside diameter		A				Cone
mm	inch	mm
Ø6.35	1/4	1.0~1.5	Copper pipe
Ø9.52	3/8	1.0~1.5		Clamp handle
Ø12.7	1/2	1.0~1.5				Red arrow mark
Ø15.88	5/8	1.0~1.5
Ø19.05	3/4	2.0~3.0
Firmly hold copper tube in a bar(or die) as			Smooth all round
				Inside is shining without scratches
indicated dimension in the table above.
5. Check					= Improper flaring =
• Compare the flared work with figure below.
• If flare is noted to be defective, cut off the
flared section and do flaring work again.				Inclined	Surface	Cracked Uneven
			Even length		damaged	thickness
			all round
					Installation Manual		13

ENGLISH

Connecting Pipes to the Indoor Unit

PipingConnection

1.Form the piping according to its routing. Avoid bending and bending back the same piping point more than three times. (This will result in hardening the pipe.)

2.After deforming the piping, align centers of the union fitting of the indoor unit and the piping, and tighten them firmly with wrenches.

3.Connect pipe to the service valve or ball valve which is located below the outdoor unit.

4.After completing the piping connection, be sure to check if there is gas leakage in indoor and outdoor connection.

	Liquid side
	Indoor
	unit
Outdoor	Flare connection
unit
	Gas side
	Flare connection

Vacuumdrying

After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit.

The vacuum drying must be carried out using the service ports of both the liquid and gas side valves.

CAUTION: Use two wrenches and tighten with regular torque.

	Flare nut fastening torque
Ø6.35mm	1.8kg.m
Ø9.52mm	2.7kg.m
Ø12.7mm	Union
	3.7kg.m
Ø15.88mm	4.7kg.m
Ø19.05mm	5.7kg.m

14 Cassette type Air Conditioner

Installation to Decorative Panel

Installation to Decorative Panel

The decorative panel has its installation		Before installing the decorative panel,
direction.		always remove the paper template.

1.Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10mm in length.)

The fixing screws (hexagon M5 screw) are included the decorative panel box.

2.Remove the air inlet grille from the decorative panel. (Remove the hook for the air inlet grille cord.)

3.Hook the decorative panel key hole ( ) on the screws fixed in step above, and slide the panel so that the screws reach the key hole edge.

4.Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)

5.Connect the louver motor connector and display connector.

6.After tightening these screws, install the air inlet grille (including the air filter).

Air conditioner unit

Piping side

Decorative panel fixing screws (hexagon M5 screws) Temporally fitting at 2 places (Tightening about 10mm)

InletLouverGrillemotor

Decorative panel

Install the panel after making sure that the piping side of the unit body matches the piping indication of the decorative panel

Control box cover

The arrow () should point

to the side where the pipes are.

Display

Key holes

Lead wire for louver motor and display

Decorative panel fixing screws (Hexagon M5 screw)

ENGLISH

Inlet Grille

Installation Manual 15

Flexible drain hose

Flexible drain hose

Indoor Unit Drain Piping

CAUTION: Install certainly the decorative panel.

Cool air leakage causes sweating. Water drops fall.

Good example	Bad example		Air conditioner unit
Air conditioner		Air	Cool air leakage
unit
			(no good)
Ceiling			Ceiling
board			board
Decorative panel			Decorative
Fit the insulator (this part) and			panel

be careful for cool air leakage

Indoor Unit Drain Piping

•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.

Piping material: Polyvinyl chloride pipe VP-25 and pipe fittings

•Be sure to execute heat insulation on the drain piping.

•Install the drain raising pipes at a right angle to the indoor unit and no more than 300mm from the unit.

	Pipe clamp	Upward
		routing
		not allowed
	Indoor unit
	Maintenance
	drain port

300mm or less
	1 -1.5m
	700 or less
	Drain raising pipe
Clamp metal(attached)	Drain hose(attached)

Heat insulation material: Polyethylene foam with thickness more than 8 mm.

Draintest

The air conditioner uses a drain pump to drain water.

Use the following procedure to test the drain pump operation:

Feed water	Flexible drain hose
	(accessory)

Main drain pipe

	Drain
Drain Pump	port	Glue the joint
	Drain hose connection
	Use the clip (accessory)

Drain pan

•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.

16 Cassette type Air Conditioner

Indoor Unit Drain Piping

HEAT INSULATION

1.Use the heat insulation material for the refrigerant piping which has an excellent heatresistance (over 120°C).

2.Precautions in high humidity

circumstance:

This air conditioner has been tested according to the "KS Standard Conditions with Mist" and confirmed that there is not any default. However, if it is operated for a long time in high humid atmosphere (dew point temperature: more than 23°C), water drops are liable to fall. In this case, add heat insulation material according to the following procedure:

•Heat insulation material to be prepared... Adiabatic glass wool with thickness 10 to 20mm.

•Stick glass wool on all air conditioners that are located in ceiling atmosphere.

Fastening band (accessory)

Refrigerant piping

Indoor unit

Thermal insulator (accessory)

FORM THE PIPINGS

1.Wrap the connecting portion of indoor unit with the Insulation material and secure it with two Plastic Bands. (for the right pipings)

•If you want to connect an additional drain hose, the end of the drain-outlet should keep distance from the ground. (Do not dip it into water, and fix it on the wall to avoid swinging in the wind.)

In case of the Outdoor unit being installed below position of the Indoor unit.

2.Tape the Pipings, drain hose and Connecting Cable from bottom to top.

3.Form the pipings gathered by taping along the exterior wall and fix it onto the wall by saddle or equivalent.

•In addition to the normal heat insulation (thickness: more than 8mm) for refrigerant piping (gas piping: thick piping) and drain piping, add further 10mm to 30mm thickness material.

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

Plastic Band

Drain hose Taping

Pipings

Connecting cable

Power supply cord

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

ENGLISH

Installation Manual 17

Indoor Unit Drain Piping

In case of the Outdoor Unit being installed above position of the Indoor Unit.

2.Tape the Pipings and Connecting cable from bottom to top.

3.Form the pipings gathered by taping along the exterior wall, and make the trap prevent water from entering into the room.

4.Fix the pipings onto the wall by saddle or equivalent.

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

Trap

18 Cassette type Air Conditioner

Test running

Test running

1.PRECAUTIONS IN TEST RUN

•The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated.

CAUTION For test run, carry out the cooling operation firstly even during heating season. If heating operation is carried out firstly, it leads to the trouble of compressor. Then attention must be paid.

Carry out the test run more than 5 minutes without fail. (Test run will be cancelled 18 minutes later automatically)

•The test run is started by pressing the room temperature checking button and down timer button for 3 seconds at the same time.

•To cancel the test run, press any button.

CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE

•After completing work, be sure to measure and record trial run properties, and store measured data, etc.

•Measuring items are room temperature, outside temperature, suction temperature, blow out temperature, wind velocity, wind volume, voltage, current, presence of abnormal vibration and noise, operating pressure, piping temperature, compressive pressure.

•As to the structure and appearance, check following items.

Is the circulation of air adequate?	Is the remote controller switch operated?
Is the draining smooth?	Is there any faulty wiring?
Is the heat insulation complete	Are not terminal screws loosened?

(refrigerant and drain piping)?

Is there any leakage of refrigerant?

M4......118N.cm{12kgf.cm} M5......196N.cm{20kgf.cm}

M6......245N.cm{25kgf.cm} M8......588N.cm{60kgf.cm}

2.Connection of power supply

1.Connect the power supply cord to the independent power supply.

•Circuit breaker is required.

2.Operate the unit for fifteen minutes or more.

3. Evaluation of the performance
1. Measure the temperature of the
intake and discharge air.
2. Ensure the difference between the
intake temperature and the discharge
one is more than 8°C (Cooling) or
reversely (Heating).	Thermometer
	Installation Manual	19

ENGLISH

Test running

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 pasted on the inside of control box cover.

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

3)The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the wires.)

4)Specification of power source

5)Confirm that electrical capacity is sufficient.

6)Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate.

7)Confirm that the cable thickness is as specified in the power sources specification.

(Particularly note the relation between cable length and thickness.)

8)Never fail to equip a leakage breaker where it is wet or moist.

9)The following troubles would be caused by voltage drop-down.

•Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal function of a overload protection device.

•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.).

20 Cassette type Air Conditioner

Optional Operation

Optional Operation

1.Two Thermistor System

(1)Open the rear cover of the wired remote-controller to set the mode.

(2)Select one of three selectable modes as follows.

• Position 1: The room themperature is controlled by the thermistor of the wired remotecontroller, control the temperature according to the position of wired remotecontroller.

• Position 2: The room temperature is controlled by the thermistor of the main body.

• Position 3: The room temperature is controlled by lower temperature between the temperature of main body and of remote-controller sensor.

(3) Move the slide switch to set position.

Slide switch for 2 Thermistor

1

2

3

1	1
	2
	3

2

3

(4) Close the rear cover and check if it works normally.

CAUTION:

•Select the position after counselling with a customer.

•In case of cooling mode, room temperature is controlled by the main body sensor.

•To control the room temperature by a wired remote controller, install controller(room temp. sensor) to sense the temperature more accurately.

•Manufactured in the position 3.

ENGLISH

Installation Manual 21

Optional Operation

2. Adjusting air volume to the height of ceiling

You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the comfortable atmosphere to consumers.

Procedure

1. Choose the selectable position in the table after measuring the height of ceiling.

	Ceiling height	Mode of slide switch	Change of air volume	Remark
	more than 3.3m	High Ceiling	Increasing	Manufactured in
	2.7~3.3m	Standard	-
				standard mode
	less than 2.7m	Low Ceiling	Decreasing

2.In the case of changing the height as "high" or "low", open the rear cover of the wired remotecontroller.

3.Move the slide switch to the set position.

1

2

3

1

2

3

1

2

3

Slide switch for ceiling height

4. Close the rear cover and check if it works normally.

22 Cassette type Air Conditioner