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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.
Ceiling Concealed Duct
MFL67939925 |
www.lg.com |
Rev.00_051118 |
Copyright © 2017 - 2019 LG Electronics Inc. All Rights Reserved. |
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2 TIPS FOR SAVING ENERGY
TIPS FOR SAVING ENERGY
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:
•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 :
IMPORTANT SAFETY INSTRUCTIONS 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 of all field wiring and components MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code 70 and the National Building Construction and Safety Code or Canadian Electrical code and National Building Code of Canada.
•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
•Always perform grounding. - Otherwise, it may cause electrical shock.
•For installation of the product, always contact the service center or a professional installation agency. - Otherwise, it may cause a fire, electrical shock, explosion or injury.
•Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit.
-If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not attached securely, it could result in a fire or electric shock due to dust, water, etc.
•Always install an earth leakage circuit breaker and a dedicated switching board. - No installation may cause a fire and electrical shock.
•Do not keep or use flammable gases or combustibles near the air conditioner. - Otherwise, it may cause a fire or the failure of product.
•Ensure that an installation frame of the outdoor unit is not damaged due to use for a long time.
-It may cause injury or an accident.
•Do not disassemble or repair the product randomly. - It will cause a fire or electrical shock.
•Do not install the product at a place that there is concern of falling down. - Otherwise, it may result in personal injury.
•Use caution when unpacking and installing. - Sharp edges may cause 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.
•Consult your lacal dealer regarding what to do in case of refrigerant leakage.
When the air conditioner is to be installed in a small room, it is necessary to take proper measures so that the amount of any leaked refrigerant does not exceed the concentration limit in the event of a leakage. Otherwise, this may lead to an accident due to oxygen depletion.
•Carry out the specified installation work after taking into account earthquakes.
Failure to do so during installation work may result in the unit falling and causing accidents.
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4 |
IMPORTANT SAFETY INSTRUCTIONS |
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An insufficient power supply capacity or improper electrical construction may lead to electric shocks or fire. |
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• Make sure that a sekparate power supply circuit is provided for this unit and that all electrical work is |
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carried out by qualified personnel according to local laws and regulations and this installation manual. |
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• Be sure to switch off the unit before touching any electrical parts. |
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• Make sure that all wiring is secured, the specified wires are used, and that there is no strain on the |
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terminal connections or wires. |
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• If refrigerant gas leaks during installation, ventilate the area immediately. |
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Toxic gas may be produced if the refrigerant gas comes into contact with fire. |
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Operation |
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• Turn off the unit if strange sounds, smell, or smoke comes from it. - Otherwise, it may cause |
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electrical shock or a fire. |
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• Keep the flames away. - Otherwise, it may cause a fire. |
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• Do not touch the power cable with wet hands when it taking out . – Otherwise, it may cause a fire |
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or electrical shock. |
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• Do not open the suction inlet of the indoor/outdoor unit during operation. - Otherwise, it may |
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electrical shock and failure. |
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• Do not allow water to run into electrical parts. - Otherwise, it may cause the failure of machine or |
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electrical shock. |
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• Never touch the metal parts of the unit when removing the filter. - They are sharp and may cause |
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injury. |
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• Do not step on the indoor/outdoor unit and do not put anything on it. - It may cause an injury through |
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dropping of the unit or falling down. |
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• When the product is submerged into water, always contact the service center. - Otherwise, it may |
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cause a fire or electrical shock. |
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• Take care so that children may not step on the outdoor unit. - Otherwise, children may be seriously |
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injured due to falling down. |
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! CAUTION
Installation
•Install the drain hose to ensure that drain can be securely done. - Otherwise, it may cause water leakage.
•Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors. - Otherwise, it may cause dispute with the neighbors.
•Always inspect gas leakage after the installation and repair of product. - Otherwise, it may cause the failure of product.
•Keep level parallel in installing the product. - Otherwise, it may cause vibration or water leakage.
Operation
•Avoid excessive cooling and perform ventilation sometimes. - Otherwise, it may do harm to your health.
•Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent. - The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.
•Do not use an appliance for special purposes such as preserving animals vegetables, precision machine, or art articles. - Otherwise, it may damage your properties.
•Do not place obstacles around the flow inlet or outlet. - Otherwise, it may cause the failure of appliance or an accident.
•Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control box cover are removed or opened.
TABLE OF CONTENTS 5
TABLE OF CONTENTS
2TIPS FOR SAVING ENERGY
3IMPORTANT SAFETY INSTRUCTIONS
6INTRODUCTION
6Features
7INSTALLATION OF INDOOR
7Selection of the best location
7Installation of Unit
10 Indoor Unit Drain Piping
10Drain test
11Thermal insulator
11 Wiring Connection
13 INSTALLATION INSTRUCTION
15Remote controller installation
16Group control
17Installer Setting - How to enter installer setting mode
18Installer Setting - Test Run Mode
19Installer Setting - Setting Address of Central Control
20Installer Setting -E.S.P.
21Installer Setting -Thermistor
22Installer Setting-Remote Controller Master/Slave Setup
23Installer Setting-Celsius / Fahrenheit Switching
24Installer Setting - Static Pressure Step Setting
27 DIP SWITCH SETTING
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6 INTRODUCTION
INTRODUCTION
Features
Air inlet vents
Air outlet vents
FAN
SPEED
TEMP
OPER
MODE
Remote
Controller
INSTALLATION OF INDOOR |
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INSTALLATION OF INDOOR
Selection of the best location
-The place shall easily bear a load exceeding four times the indoor unit’s weight.
-The place shall be able to inspect the unit as the figure.
-The place where the unit shall be leveled.
-The place shall allow easy water drainage.(Suitable dimension “H” is necessary to get a slope to drain as figure.)
-The place shall easily connect with the outdoor unit.
-The place where the unit is not affected by an electrical noise.
-The place where air circulation in the room will be good .
-There should not be any heat source or steam near the unit
-Confirm the positional relationship between the unit and suspension bolts.
-Thermal insulator the ceiling opening to clean the filter or service under the product.
Installation of Unit
Install the unit above the ceiling correctly.
CASE 1
Position of suspension Bolt
-Apply a joint-canvas between the unit and duct to absorb unnecessary vibration.
-Apply a filter Accessory at air return hole.
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A |
B |
Top view |
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Unit: mm |
Inspection hole |
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600 x 600 |
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Air inlet vents |
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H |
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Control box |
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Drain hole |
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600 |
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600 |
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(Unit:mm) |
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1 000 |
Dimension |
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Air outlet vents |
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Capacity |
A |
B |
C |
D |
E |
F |
G |
H |
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J |
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Front |
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(Btu/h ) |
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Front view |
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18 / 24 /30 |
933.4 |
971.6 |
619.2 |
679 |
35 |
270 |
4.5 |
857 |
200 |
900 |
Unit: mm |
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36 |
1 283.4 1 321.6 |
619.2 |
679 |
35 |
270 |
4.5 |
1 206 200 |
1 250 |
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48 / 50 / 54 /60 1 283.4 1 321.6 |
619.2 |
679 |
35 |
360 |
4.5 |
1 206 291 |
1 250 |
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20 or more
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8 INSTALLATION OF INDOOR |
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CASE 2 |
- Select and mark the position for fixing bolts. |
- Drill the hole for set anchor on the face of - Install the unit leaning to a drainage hole side ceiling.
as a figure for easy water drainage.
Position of console Bolt
- A place where the unit will be leveled and that can support the weight of the unit.
- A place where the unit can withstand its vibration.
- A place where service can be easily performed.
M10 Nut |
X 4 |
(Local |
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M10 SP. washer X 4 |
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supply) |
- Insert the set anchor and washer onto the |
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M10 washer |
X 4 |
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suspension bolts for locking the suspension |
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bolts on the ceiling. |
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- Mount the suspension bolts to the set |
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M10 washer |
X 4 |
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anchor firmly. |
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(Local |
- Secure the installation plates onto the |
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M10 SP. washer X 4 |
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supply) |
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suspension bolts (adjust level roughly) using |
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M10 Nut |
X 4 |
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nuts, washers and spring washers. |
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Old building |
New building |
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1 Set anchor
2 Plate washer
3 Spring washer
4 Nut
5 Suspension
bolts
! CAUTION
Tighten the nut and bolt to prevent unit falling.
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INSTALLATION OF INDOOR |
9 |
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! CAUTION |
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• Install declination of the indoor unit is very important for the drain of the duct type air |
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conditioner. |
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• Minimum thickness of the insulation for the connecting pipe shall be 5 mm. |
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Front of view
• The unit must be declined to the drain hose connected when finished installation.
Ceiling
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1/100~1/50 |
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Drainage hole |
Drainage hole |
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CORRECT |
INCORRECT |
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Caution for gradient of unit and drain piping
Lay the drain hose with a downward inclination so water will drain out.
•Always lay the drain withdownward inclination (1/100 to 1/50).
Prevent any upward flow or reverse flow
in any part.
•10 mm or thicker formed thermal insulator shall always be provided for the drain pipe.
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Thermal insulator |
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(Local supply) |
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Drainage pipe |
Unit |
(Local supply) |
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Make sure to be closed. |
Drainage hole |
•Upward routing not allowed
CORRECT |
INCORRECT |
Applied U-Trap Dimension
•Install the P-Trap (or U-Trap) to prevent a water leakage caused by the blocking of intake air filter.
A ≥ 70 mm B ≥ 2C
C ≥ 2 x SP
SP = External Pressure (mmAq)
Ex) External Pressure = 10 mmAq
A ≥ 70 mm B ≥ 40 mm C ≥ 20 mm
C
A
B
U-Trap
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