LG LXN0356QC Owner’s Manual

TELECOM AIR CONDITIONERS

INSTALLATION INSTRUCTIONS

•Please reaductionthissheetinstrcompletely before installingENGLISH

•Whenthepowercordistobereplaced,replacementworkshalbeperformedbyauthorized personnel only.

•Instalationworkmustbeperformedinacordancewithnationalwiringstandardsbyauthorized personnel only.

3.0TR SINGLE PHASE: LX-0356QC

3.5TR SINGLE PHASE: LX-0456QC

INDEX
1.The following should be always observed for safety		................... 4~5
2. Product Specification ..........................................................................		6
2.1	Product Description .............................................................................	6
2.2	Inspection ............................................................................................	6
2.3	Technical specification .......................................................................	7
3.	Installation Standard ..........................................................................	8
3.1	Pre-check ...........................................................................................	8
3.2	Levelling of Airconditioner ..................................................................	9
3.3	Shelter Cut - out sealing ......................................................................	9
3.4.Condensate Drain Pipe .......................................................................		9
3.5 Air purging of connecting pipes & Indoor unit ......................................		10
3.6	Filter Cleaning .....................................................................................	10
3.7	Installation Drawing - Cases 1& 2 ...............................................	11~14
3.8	Installation Drawing - Foundation ......................................................	15
4. Controller ............................................................................................		16
4.1	Display & Indicators ...........................................................................	16
4.2	Pre-Startup instructions ....................................................................	17
4.3	Operations ...................................................................................	18~19
4.4	LCD menu details ........................................................................	20~27
5.Trouble Shooting ...............................................................................		28
5.1	Symptoms & Problems .....................................................................	28
6.Electrical wiring diagram ..................................................................		29
6.1	Indoor wiring Diagram .......................................................................	29
6.2	Outdoor wiring Diagram ....................................................................	29
6.3	Controller Connection Diagram .........................................................	30
7.Exploded view .....................................................................................		31
7.1 indoor unit ..........................................................................................		31
7.2	Outdoor unit .......................................................................................	32
7.3	Part List ........................................................................................	33~34

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1. The following should be always observed for safety

The supplied unit requires 3 phase supply to operate, so please make sure to have authorised connection by the supply authority before connecting to the system.

Be sure to read "THE FOLLOWING SHOULD BE ALWAYS OBSERVED FOR SAFETY" before installing the air conditioner.

Be sure to observe the cautions specified here as they include important items related to safety. The indications and meanings are as follows.

WARNING Could lead to death, serious injury, etc.

CAUTION Could lead to serious injury in particular environments when operated incorrectly.

After reading this manual, be sure to keep it together with the owner's manual in an accessible place.

WARNING

Do not install it yourself (customer).

Incomplete installation could cause injury due to fire, electric shock, the unit falling or a leakage of water Consult the dealer from whom you purchased the unit or authorised installer.

Perform the installation securely referring to the installation manual.

Incomplete installation could cause a personal injury due to fire, electric shock, the unit falling or a leakage of water.

Install the unit securely in a place which can bear the weight of the unit.

When installed in an insufficient strong place,theunitcouldfal causing injured.

Use the specified wires to connect the indoor and the outdoor units securely and attach the wires firmly to the terminal board connecting sections so the stress of the wires is not applied to the sections.

Incomplete connecting and fixing could cause fire.

Check that the refrigerant gas do not leak after installation is completed.

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 modify or extend the power cable.

There is risk of fire or electric shock.

Use the correctly rated circuit breaker.

There is risk of fire or electric shock.

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

There is risk of fire or electric shock.

Perform electrical work according to the installation manual and be sure to use an exclusive circuit.

If the capacity of the power circuit is insufficient or there is incomplete electrical work, it could result in a fire or an electric shock.

Attach the electrical part cover to the indoor unit and the service panel to the outdoor unit securely.

If the electrical part cover if the indoor unit and/or the service panel if the outdoor unit are not attached securely, it could result in a fire or electric shock due to dust, water, etc.

Be sure to use the part provided or specified parts for the installation work.

The use of defective parts could cause an injury or leakage of water due to a fire, electric shock, the unit falling, etc.

Be cautious when unpacking and installing the product.

Sharp edges could cause injury. Be especially careful of the case edges and the fins on condenser and evaporator.

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.

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	CAUTION
Perform the drainage/piping work securely	Do not install the unit in a place where an

according to the installation manual.		inflammable gas leaks.
If there is a defect in the drainage/piping work, water
		If gas leaks and accumulates in the area surrounding the unit, it
could drop from the unit and household goods could be		could cause an explosion.
wet and damaged.

Always check for refrigerant R-22 leakage after installing or repair of product.

Low refrigera nt R-22 levels may cause malfunctionin g of product.

Do not install the product where the noise or hot air coming from the outdoor unit could harm your neighbors.

It may cause problem to your neighbors.

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

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

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

Avoid personal injury.

Keep the level of your airconditioner as mentioned in manual to avoid vibration or water leakage.

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2. PRODUCT SPECIFICATION

2.1 PRODUCT DESCRIPTION:

Airconditioner is composed of evaporator unit and condensing unit. Evaporator unit is positioned on top of condensing unit and connected with interconnection pipes. Condenser section consists of compressor, propeller fan, fan motor and condenser coil. And Evaporator section consists of evaporator coil, centrifugal blower, blower motor and logical controller. Airconditioner is equipped with dual independent Airconditioning cycle for reliability measures.

2.2 INSPECTION:

1.Check the damage after unit is unloaded, report promptly to the carrier, any damage found to unit. Do not drop the unit.

2.Open the Packing carefully to check the unit in upright position.

3.Check the unit dents, paint damage, tube pinch offs, tube parts touching with sheet metals, mechanical components and electrical wires connections.

4.Condensing unit is precharged with R-22 gas from factory. Ensure gas in condensing unit before installation.

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2.3 TECHNICAL SPECIFICATIONS

DESCRIPTION		UNITS	LX-0356QC	LX-0456QC	<![if ! IE]> <![endif]>ENGLISH
LATENT COOLING CAPACITY		KCAL/HR	465 X 2	525 X 2
NOMINAL COOLING CAPACITY		TR	3.0	3.5
TOTAL COOLING CAPACITY		BTU/HR	18600 X 2	21000 X 2
		KCAL/HR	4650 X 2	5250 X 2
SENSIBLE COOLING CAPACITY		KCAL/HR	4185 X 2	4725 X 2
AIRFLOW		CFM	825 X 2	960 X 2
NO OF REFRIGERANT CIRCUITS		NOS	2	2
COMPRESSOR	TYPE		Rotary	Rotary
	QTY	NOS	2	2
	MAKE		Hitachi	Hitachi
	MODEL		SH315CV-C7HU	SH315CV-C7HU
EVAPORATOR	FACE AREA	Sq.M	0.223	0.223
	QTY	NOS	2	2
	FIN DENSITY/ROWS	FPI/No	14/2	14/3
	MATERIAL OF TUBE/FIN		Cu/Al-Precoat	Cu/Al-Precoat
CONDENSER	FACE AREA	Sq.M	0.272	0.272
	QTY	NOS	2	2
	FIN DENSITY/ROWS	FPI/No	14/3	14/3
	MATERIAL OF TUBE/FIN		Cu/Al-Precoat	Cu/Al-Precoat
INDOOR MOTOR	TYPE		INDUCTION MOTOR	INDUCTION MOTOR
	QUANTITY	NOS	2	2
	POWER SUPPLY		230V-1PH-50Hz	230V-1PH-50Hz
	SPEED	RPM	960	1100
	SHAFT DIAMETER	mm	17	17
	CLASS OF INSULATION		B CLASS	B CLASS
OUTDOOR MOTOR	TYPE		INDUCTION MOTOR	INDUCTION MOTOR
	QUANTITY	NOS	2	2
	POWER SUPPLY		230V-1PH-50Hz	230V-1PH-50Hz
	SHAFT DIAMETER	mm	12.7	12.7
	CLASS OF INSULATION		B CLASS	B CLASS
	FAN SPEED	RPM	880	880
BLOWER	TYPE		CENTRIFUGAL,FORWARD	CENTRIFUGAL,FORWARD
			CURVE, DIDW	CURVE, DIDW
	QTY	NOS	2	2
FAN	TYPE		PROPELLER -AXIAL	PROPELLER -AXIAL
	FAN MATERIAL		Plastic	Plastic
	QTY	NOS	2	2
CONNECTIONS	CONDENSATE DRAIN SIZE	mm	19	19
	GAS OUTLET SIZE OD (nos)	mm	12.7x2	12.7x2
	LIQUID INLET SIZE,OD (nos)	mm	9.52x2	9.52x2
OVERALL DIMENSION-INDOOR	(A)WIDTH	mm	665	665
	(B)DEPTH	mm	762	762
	©HEIGHT	mm	938	938
WEIGHT-INDOOR	WEIGHT GROSS	KGS	90	92
	WEIGHT NET	KGS	85	87
OVERALL DIMENSION-OUTDOOR	WIDTH	mm	665	665
	DEPTH	mm	550	550
	HEIGHT	mm	1080	1080
WEIGHT-OUTDOOR	WEIGHT GROSS	KGS	110	110
	WEIGHT NET	KGS	105	105

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3.INSTALLATION STANDARD

3.1PRE-CHECK:

1.Remove the packing wooden base from indoor & outdoor unit.

2.Place the outdoor unit over mounting base (Concrete or I –beam) and place antivibration pad and mount as per installation instructions.

3.Positioned the Indoor unit over Top of condensing unit and bolted indoor with outdoor after fixing indoor to shelter cut-out portion.

4.Check there should not be any dents, dust in interconnecting piping.

5.Prepare inter connection pipe to connect indoor unit with outdoor unit as per following.

FLARED TYPE INTERCONNECTING PIPING	SIZE X QTY.
SUCTION LINE INTERCONNECTING PIPING	1/2 inch X 2
LIQUID LINE INTER CONNECTING PIPING	3/8 inch X 2

6.Wrap Teflon tape in direction of thread to the connectors & service valve before placing flared tubing.

7.Align the centre of the pipings (2 suctions & 2 liquids) and sufficiently tighten the flare nut with fingers.

8.Finally tighten the flare nut with torque wrench until the wrench clicks (40~80kgf). When tightening the flare nut with torque wrench, ensure the direction of tightening follows the arrow of wrench.

Liquid Suction

Interconnection Interconnection

(A)

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3.2. Levelling of Airconditioner

After placing the unit on Channel/concrete structure maintain the levelling of unit towards rear side with 10mm slope so as to ensure free flow drainage.

Water seepage problem may happen due to improper levelling of unit.

3.3. Shelter Cutout sealing

Angle flanges (4 nos) to be fixed with shelter wall after installation. These flanges are to be fixed with shelter wall after installation so as to prevent any leakage in shelter. after fixing the flanges; apply silicon sealant on edges of flanges to make complete leak free cut-out. These are not the part of unit accessories.

(B)

3.4. Condensate Drain pipe

1.Air conditioner is provided with one flexible drain pipe, which shall be connected to metal Drain pipe of unit & should be routed through gap between shelter wall and condensing unit (see fig. C).

2.Do Not leave drain pipe open, your airconditioner may suck condensate water and cause splitting of water inside the shelter.

(C)

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3.5. Air purging of inter connection & Indoor unit

The air which contains moisture remaining in the refrigeration cycle may cause malfunction of compressor.

1.Confirm the both liquid valves& gas valves are set to closed position.

2.After connecting the piping, check the joints for gas leakage with gas leal detector.

3.Remove the service port nut, and connect the gauge manifold and vacuum pump to the service port by charge hose.

4.Vacuum the indoor unit & connecting pipes until the pressure in them lowers to below 76 cmHg.

5.Remove the valve stem nuts. and fully open the stems of service valves with hexagon wrench. & Tight the flare nuts of indoor & outdoor unit.

6.Purge the gas qty-80grams in each circuit to remove moist air contents.

7.Disconnect the charge hose and fit the nut to the service port. (Tightening torque:1.8kg.m)

3.6. Filter Cleaning

The Airconditioner is equipped with fine air filter (2 nos.). The Air filter are at front of unit shall be checked and cleaned every month or more often

if necessary.

Air-filter

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3.7. INSTALLATION DRAWING - CASE 1 : CONCRETE BASEMOUNTING

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SHELTER WALL

AC UNIT

CONCRETE

BASE

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