LG AK-Q2408C00 INSTALLATION MANUAL
P/NO : MFL67445803
www.lg.com
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.
TYPE : SINGLE PACKAGE
ENGLISH
ESPAÑOL
PORTUGUESE
• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.
• Block sunlight with blinds or curtains while you are operating the air conditioner.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:
TIPS FOR SAVING ENERGY
TIPS FOR SAVING ENERGY
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3
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product
WARNING
It can result in serious injury or death when the directions are ignored
CAUTION
It can result in minor injury or product damage when the directions are ignored
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• Installation MUST conform with local building codes or, in the absence of local codes, with
the Nation Electrical Code NFPA 70/ANSI C1-1003 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.
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.
• Use the specified wires to connect the unit.
- There is risk of fire or electric shock.
• Do not install, remove, or re-install the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury.
• 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 con-
denser 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.
!
!
!
SAFETY PRECAUTIONS
ENGLISH
• 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.
• Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress
air or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
Operation
• 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.
• Take care to ensure that power cable could not be pulled out or damaged during operation.
- There is risk of fire or electric shock.
• Do not place anything on the power cable.
- There is risk of fire or electric shock.
• Do not plug or unplug the power supply plug during operation.
- There is risk of fire or electric shock.
• Do not touch(operate) the product with wet hands.
- There is risk of fire or electrical shock.
• Do not place a heater or other appliances near the power cable.
- There is risk of fire and electric shock.
• Do not allow water to run into electric parts.
- It may cause failure of the product or electric shock.
• Do not store or use flammable gas or combustibles near the product.
- There is risk of fire or failure of product.
• Do not use the product in a tightly closed space for a long time.
- Oxygen deficiency could occur.
• When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on.
- Do not use the telephone or turn switches on or off. There is risk of explosion or fire
• If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the
power supply cable.
- There is risk of electric shock or fire.
• Stop operation and close the window in storm or hurricane. If possible, remove the product from the
window before the hurricane arrives.
- There is risk of property damage, failure of product, or electric shock.
• Do not open the panel of the product during operation. (Do not touch the electrostatic filter, if the
unit is so equipped.)
- There is risk of physical injury, electric shock, or product failure.
• When the product is soaked (flooded or submerged), contact an Authorized Service Center.
- There is risk of fire or electric shock.
• Be cautious that water could not enter the product.
- There is risk of fire, electric shock, or product damage.
• Ventilate the product from time to time when operating it together with a stove, etc.
- There is risk of fire or electric shock.
• Turn the main power off when cleaning or maintaining the product.
- 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.
SAFETY PRECAUTIONS
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SAFETY PRECAUTIONS
• Take care to ensure that nobody could step on or fall onto the unit.
- This could result in personal injury and product damage.
CAUTION
Installation
• Always check for gas (refrigerant) pressure 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.
• Don't use 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.
Operation
• Do not expose the skin directly to cool air for long periods of time. (Don't sit in the draft.)
- This could harm to your health.
• 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.
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ENGLISH
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TABLE OF CONTENTS
ENGLISH
2 TIPS FOR SAVING
ENERGY
3 IMPORTANT SAFETY
INSTRUCTIONS
7 INTRODUCTION
7 Features (10 / 12.5 / 15 RT)
8 Features (20 / 25 RT)
9 DIMENSIONAL DATA
(10 / 12.5 / 15 RT)
10 DIMENSIONAL DATA
(20 / 25 RT)
11 INSTALLATION OF UNIT
11 Inspection
11 Location and Recommendations
12 Ductwork
12 Change Airflow
13
Plumbing materials and storage methods
15 Condensate Drain Piping
15 Filter Installation
15 Installation of Remote Controller
20 Electronic Wiring
21 Field Wiring
29 Connect the cable to the Product
31 Dip Switch Setting in Indoor Main PCB
31 Group Control
32 Evaporator Fan Adjustment
33 Trial Run Mode
34 Self-Diagnosis Function
39 Starting the Unit
40
Final Installation Checklist and Maintenance
42 Installation guide at the seaside
TABLE OF CONTENTS
INTRODUCTION
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ENGLISH
Features (10 / 12.5 / 15 RT)
Front View
Rear View
INTRODUCTION
Air outlet vents
Drain Hole
Return
SupplyMotor Access Panel
Control
access panel
Compressor
access panel
Air outlet
vents
Air intake vents
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INTRODUCTION
ENGLISH
Features (20 / 25 RT)
Front View
Rear View
Air outlet vents
Drain Hole
Motor Access Panel
Return
Supply
Air outlet
vents
Control
access panel
Compressor
access panel
Air intake vents
DIMENSIONAL DATA
9
Single packaged cooling unit are designed for
outdoor mounting with vertical condenser discharge. They can be located either at ground
level or on roof.
Each unit contains an operating charge of
Refrigerant as shipped.
Product Dimensions (Figure 1A)
HORIZONTAL FLOW APPLICATION
(Figure 1B)
DOWN FLOW APPLICATION
(Figure 1C)
Tool 10 / 12.5 / 15 RT
A 1,237 (48-11/16)
B 2,230 (87-25/32)
C 1,958 (77-3/32)
D 36 (1-13/32)
E 60 (2-3/8)
Tool 10 / 12.5 / 15 RT
A 484 (19-1/16)
B 864 (34-1/32)
C 482 (18-31/32)
D 206 (8-1/8)
E 126 (4-31/32)
F 913 (35-15/16)
G 130 (5-1/8)
H 800 (31-1/2)
Figure 1A
Figure 1B
Figure 1C
Tool 10 / 12.5 / 15 RT
A 484 (19-1/16)
B 427 (16-13/16)
C 482 (18-31/32)
D 642 (25-9/32)
E 92 (3-5/8)
F 800 (31-1/2)
G 92 (3-5/8)
H 913 (35-15/16)
DIMENSIONAL DATA (10 / 12.5 / 15 RT)
[Unit : mm (inch)]
[Unit : mm (inch)]
[Unit : mm (inch)]
ENGLISH
CLEARANCE 860mm
C
CLEARANCE 1160mm
CLEARANCE 1160mm
E
D
B
CLEARANCE 860mm
A
CLEARANCE 860mm
CLEARANCE 1160
mm
H
G
CLEARANCE 1160mm
C
B
A
CLEARANCE 860mm
A
B CD
F
E
D
E
F
RETURN
SUPPLY
TOP VIEW
HG
10
DIMENSIONAL DATA
ENGLISH
Single packaged cooling unit are designed for
outdoor mounting with vertical condenser discharge. They can be located either at ground
level or on roof.
Each unit contains an operating charge of
Refrigerant as shipped.
Product Dimensions (Figure 1A)
HORIZONTAL FLOW APPLICATION
(Figure 1B)
DOWN FLOW APPLICATION
(Figure 1C)
Tool 20 / 25 RT
A 1,242 (48-29/32)
B 2,230 (87-25/32)
C 3,520 (138-19/32)
Tool 20 / 25 RT
A 616 (24-1/4)
B 678 (26-11/16)
C 655 (25-25/32)
D 60 (2-3/8)
E 125 (4-29/32)
F 882 (34-23/32)
G 115 (4-17/32)
H 860 (33-27/32)
Figure 1A
Figure 1B
Tool 20 / 25 RT
A 655 (25-25/32)
B 457 (18)
C 616 (24-1/4)
D 196 (7-23/32)
E 116 (4-9/16)
F 882 (34-23/32)
G 116 (4-9/16)
H 860 (33-27/32)
DIMENSIONAL DATA (20 / 25 RT)
[Unit : mm (inch)]
[Unit : mm (inch)]
[Unit : mm (inch)]
Figure 1C
CLEARANCE 860mm
C
CLEARANCE 1160mm
CLEARANCE 1160mm
B
CLEARANCE 860mm
CLEARANCE 860mm
H
CLEARANCE 1160mm
G
A
A
B CD
E
F
RETURN
TOP VIEW
CLEARANCE 1160mm
B
A
CLEARANCE 860mm
SUPPLY
F
E
D
C
HG
INSTALLATION OF UNIT
11
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Inspection
1 Check for damage after unit is unloaded.
Report promptly, to the carrier, any damage found to unit. Do not drop unit.
2 Check the unit nameplate to determine if
the unit voltage is correct for the application. Determine if adequate electrical
power is available. Refer to the application
specifications.
3 Check to be sure the refrigerant charge
has been retained during shipment.
Access to 1/4" flare pressure taps may be
gained by removing compressor compartment access panel.
Location and
Recommendations
Unit Support
If unit is to be roof mounted check building
codes for weight distribution requirements.
Location and Clearances
Installation of unit should conform to local
building codes and the National Electrical
Code. Select a location that will permit unobstructed airflow into the condenser coil and
away from the fan discharge and permit unobstructed service access into the compressor
compartment. Suggested airflow clearances
and service clearances are given in Figure 1.
Placing and Rigging
Rig the unit using either belt or cable slings.
The sling eyelet must be placed through the
lifting holes in the base rail of the unit. The
point where the slings meet the lifting eyelet
should be at least 1.8m above the unit. Use
spreader bars to prevent excessive pressure
on the top of the unit during lifting.
Roof Mounted Units
On new roofs, the curb should be welded
directly to the roof deck. For existing construction, nailers must be installed under the curb if
welding is not possible. Be sure attach the
down flow ductwork to the curb before setting unit in place.
When installing the unit, it must be level to
insure proper condensate flow from the unit
drain pan.
Slab Mount
"For ground level installation, the unit base
should be adequately supported and hold the
unit near level. The installation must meet the
guidelines set forth in local codes."
NOTE
!
• The use of "spreader bars" is required
when hoisting the unit (prevents damage to sides and top). Top crating can
be used as spreader bars.
Figure 2
Recommended
Rigging Method
INSTALLATION OF UNIT
Net Weight kg lbs
10/12.5/15RT 550 1,212
20/25RT 950 2,094
Lifting Beam
Spreader Bar
Cable
or Chain
Clevis
Holes in Base
Rail
12
INSTALLATION OF UNIT
ENGLISH
Ductwork
Ductwork construction guidelines
Connections to the unit should be made with
3"(76mm) canvas connectors to minimize
noise and vibration transmission.
Elbows with turning vanes or splitters are recommended to minimize air noise and resistance.
The first elbow in the ductwork leaving the
unit should be no closer than three times
blower diameter to avoid turbulence and back
pressure.
Attaching Horizontal Ductwork to
the Unit
All conditioned air ductwork should be insulated to minimize heating and cooling duct losses. Use minimum of 2"(50mm) of insulation
with a vapor barrier. The outside ductwork
must be weather proofed between the unit
and the building.
When attaching ductwork to a horizontal unit,
provide a flexible water tight connection to
prevent noise transmission from the unit to
the ducts. The flexible connection must be
indoors and molded out of heavy canvas.
Change Airflow
Horizontal flow to Down flow Conversion
1 Remove the covers from the down flow
openings on the base panel by unscrewing
as shown.
2 Close the horizontal Supply and Return
openings on the front panel by attaching
the covers firmly on to it which are
removed from the down flow openings.
* Cover assembly should be assembled as
insulation being downward.
NOTE
!
• Do not draw the canvas taut between
the solid ducts.
Figure 3
(1)
(2)
Return cover
Supply cover
INSTALLATION OF UNIT
13
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Plumbing materials and storage methods
Pipe must be able to obtain the specified thickness and should be used with low impurities.
Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound.
Should not be mixed with contaminations such as dust, moisture.
Refrigerant piping on three principles
Drying Cleanliness Airtight
Should be no moisture inside No dust inside.
There is no refrigerant leak-
age
Items
Moisture
Dust
Leakage
Cause
failure
- Significant hydrolysis of
refrigerant oil
- Degradation of refrigerant
oil
- Poor insulation of the compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- Degradation of refrigerant
oil
- Poor insulation of the compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- Gas shortages
- Degradation of refrigerant
oil
- Poor insulation of the compressor
- Do not cold and warm
Counter
measure
- No moisture in the pipe
- Until the connection is
completed, the plumbing
pipe entrance should be
strictly controlled.
- Stop plumbing at rainy day.
- Pipe entrance should be
taken side or bottom.
- When removal burr after
cutting pipe, pipe entrance
should be taken down.
- Pipe entrance should be
fitted cap when pass
through the walls.
- No dust in the pipe.
- Until the connection is
completed, the plumbing
pipe entrance should be
strictly controlled.
- Pipe entrance should be
taken side or bottom.
- When removal burr after
cutting pipe, pipe entrance
should be taken down.
- Pipe entrance should be
fitted cap when pass
through the walls.
- Airtightness test should
be.
- Brazing operations to comply with standards.
- Flare to comply with standards.
- Flange connections to
comply with standards.
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