LG HMC012KD Room Air Conditioner Instruction Manual
- July 30, 2024
- LG
Table of Contents
LG HMC012KD Room Air Conditioner
Product Information
Specifications:
- Model: LG HMC012KD
- Type: Air Conditioner
- Brand: LG
- Parts Compatibility: 2328 Models
Product Usage Instructions
1. Installation:
Follow the installation guide provided with the air conditioner. Ensure proper placement and secure mounting.
2. Power On:
Plug in the air conditioner to a power source and turn it on using the control panel or remote control.
3. Setting the Temperature:
Use the temperature control settings to set your desired room temperature. Adjust the settings accordingly.
4. Fan Speed:
You can adjust the fan speed settings based on your comfort level. Choose from low, medium, or high-speed settings.
5. Mode Selection:
Select the appropriate mode such as cool, fan, or energy-saving mode based on your cooling needs.
Frequently Asked Questions
- Q: How often should I clean the air filters?
- A: It is recommended to clean the air filters every 2 weeks to ensure optimal performance.
- Q: Can I use the air conditioner in a humid environment?
- A: Yes, the air conditioner is suitable for use in humid environments, but regular maintenance is essential.
- Q: What should I do if the air conditioner is not cooling effectively?
- A: Check for any obstructions blocking the airflow and ensure that the temperature and fan speed settings are appropriate.
Installation
IMPORTANT!
Please read this instruction sheet completely before installing the product.
This air conditioning system meets strict safety and operating standards. As
the installer or service person, it is an important part of your job to
install or service the system so it operates safely and efficiently.
_.&. 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 National Electrical Code NFPA 70/ANSI C 1-1993 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.
CAUTION: Improper installation, adjustment, alteration, service or maintenance
can void the warranty.
The weight of the condensing unit requires caution and proper handling
procedures when lifting or moving to avoid personal injury. Use care to avoid
contact with sharp or pointed edges.
Safety Precautions
• Always wear safety eye wear and work gloves when installing equipment.
• Never assume electrical power is disconnected. Check with meter and
equipment.
• Keep hands out of fan areas when power is connected to equipment.
• R-22 causes frostbite burns.
• R-22 is toxic when burned.
NOTE TO INSTALLING DEALER: The Owners Instructions and Warranty are to be given to the owner or prominently displayed near the indoor Furnace/Air Handler Unit.
? Special warnings
When wiring: Electrical shock can cause severe personal injury or death. Only a qualified, experienced electrician should attempt to wire this system.
• Do not supply power to the unit until all wiring and tubing are completed or
reconnected and checked.
• Highly dangerous electrical voltages are used in this system. Carefully
refer to the wiring diagram and these instructions when wiring. Improper
connections and inadequate grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection
points and a possible fire hazard.
When transporting:
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your finger.
When installing …
… in a wall: Make sure the wall is strong enough to hold the unit’s weight.
It may be necessary to construct a strong wood or metal frame to provide added
support.
… in a room: Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water
damage to wall and floors .
… in moist or uneven locatinons: Use a raised concrete pad or concrete blocks
provide a solid, level foundation for the
outdoor unit. This prevents water damage and abnormal vibration .
… in an area with high winds: Securely anchor the outdoor unit down with bolts
and a metal frame. Provide a
suitable air baffle .
… in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised
platform that is higher than drifting snow. Provide snow vents.
When connecting refrigerant tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Check carefully for leaks before starting the test run.
When servicing
• Turn the power OFF at the main power box(mains) before opening the unit to
check or repair electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal
scraps or bits of wiring have been left inside the unit being serviced.
(1) Installation Parts Provided
1. Type “A” screw —–t..,.,.
Installation Plate—–,r.–:…..–……;;.__.a
3. Type “B” screw ——t•
4. Holder Remote-Controller ——.=f=?”‘I
(2) Installation of Indoor, Outdoor unit
- Selection of the best location
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, fence, or
other obstacles.
2. Outdoor unit
• If an awning is built over the unit to prevent direct sunlight or rain
exposure, be careful that heat radiation from the condenser is not restricted.
• There should not be any animals or plants which could be affected by hot air
discharged.
• Ensure the spaces indicated by arrows from the wall, ceiling, fence, or
other obstacles.
Roof Top Installations
If it is necessary to install units on a roof structure, be sure to elevate and level the units. Ensure the roof structure and anchoring method are adequate for unit location. Consult local codes regarding rooftop mounting.
NOTE: When condensing unit is to be installed on a bonded guaranted roof, a release must be obtained from the building owner to free the installer from all liabilities.
3. Piping length and the elevation
- Indoor Unit Installation
The mounting wall should be strong and solid enough to protect it from the vibration.
1. Mount the installation plate on the wall with four Type “A” screws.
(if mounting the unit on the concrete wall, consider using anchor bolts.)
• Always mount the Installation Plate horizontally by aligning the marking-off
line by means of the thread and a level.
2. Drill the piping hole with 70mm(2.75″) dia. holecore drill.
• Drill the Piping hole at either the right or the left and the hole should be
slightly slanted to the outdoor side.it WARNING
Avoid areas where electrical wiring, conduits or gas lines are located. Accidentally cutting a live wire or gas line can cause death or injury.
(3) Piping and Drainage of Indoor Unit
- PREPARATION OF PIPINGS
1. Cut the pipes and the cable.
• Use the pipes purchased locally.
• Measure the distance between the indoor and the outdoor unit.
• Cut the pipes a little longer than measured distance.
• Cut the cable 1.5m(5.0 ft) longer than the length of the pipe.
2. Remove burrs.
• Remove burrs from cut edges of pipes.
• Turn the pipe end toward down to avoid the metal powder entering the pipe.\
Caution:
If burrs are not removed, they may cause a gas leakage.
3. Flaring the pipes.
• Insert the flare nuts, mounted on the connection ports of both indoor and
outdoor unit, onto the copper pipes. Some gas may leak, when the flare nuts
are removed from the indoor unit, as some gas is charged to prevent the inside
of the pipe from rusting.
• Fit the copper pipe end into the Bar of flare tool about 0.5~1.0mm higher.
(See illustration)
• Make a flare at the end of copper pipe with a flare tool*.
• Use “RIDGID” or equivalent.
4. Tape the flaring portion to protect it from the dust or damages.
- Connection of Pipings
1. Remove the indoor tubing with Drain hose from the hole
• Remove tubing holder and pull the tubing out of the chassis.
2. Replace the tubing holder into original position.
• Recommended SPEC. of a additional Drain Hose.
- Foamed Polyethylene or equivalent isrecommended.
CAUTION: The unit’s drain hose and additional drain hose must be sealed up by adhesive or tape.
Connection method of the connecting cable(Example)
(1) Dismount two-caps on the conduit panel.
(2) Make a hole appropriate tor the passage of connection cable through on cap
by tool.
(for low voltage line)
(3) Pass the connecting cable through the hole.
(4) Property connect the cable on the terminal block
(5) Fix the connection cable with clamp cord provided on
Une unit mut ku harves strain al the lennised when these connection cable is
pulled outside up to a 35 pound weight.
(6) Wind the vinyl tape round the connecting cable for
sealing between the surface of the connection cable
and cap.
(7) Mount the teped pert of cable on the cep.
(8) Finally, mount the holed cap with the wound cable on
thc conduit pancl.
WARNING
Loose wiring may cause the terminal to overheat
or result in unit malfunction. A fire hazard may
also exist. Therefore, be sure all wiring is tightly
When connecting each power wire to the corresponding
terminal, follow instructions “How to connect wiring to the
terminals” and fasten the wire tightly with the fixing screw of
the terminal plate.
How to connect wiring to the terminals
5 For solid core wiring (or F-cable)
(1) Cut the wire end with a wire cutter of wire-cutting
pliers. then strip the insulation to expose the solid wire
about 25mm(15/16)
(2) Using a screwdriver, remove the terminal screw(s) on the terminal plate.
(3) Using pliers, bend the solid wire to from a loop suitable for the terminal
screw.
(4) Shape the loop wire property, place it on the terminal
plater and tighten securely with the terminal screw using a screwdriver.
$ For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the
insulation to expose the strand wining about 10mm(3/8).
(2) Using a screwdriver, remove the terminal screw(s) on
the terminal plate.
(3) Using a round terminal fastener or pliers, securely
clamp each stripped wire end with a round terminal.
(4) Position the round terminal wire, and replace and tighten the
terminal screw using a screwdriver.
- Connect the cable to the indoor unit
1. Connect the wires to the terminals on the
control board individually according to the
outdoor unit connection.
• Ensure that the color of the wires of outdoor unit
and the terminal No. are the same as those of
indoor unit respectively.
(Refer to Wiring diagram on page30.)
A WARNING
• Be sure to refer to the wiring diagram label
indide the cover control and carry out the
correct field wiring.
Wrong wiring can cause the unit to misoperate to result in a fire hazard.
• Check local electrical codes and any specified
wiring instructions or limitations.
2. Attach the Grille onto the cabinet.
- Grasp lower the left and right side of the Ginile and engage four tabs on the top inside edge of the
chassis.
• Press the Grille toward the chassis until it will be
back into place.
(6) Air Purging
Air and moisture remaining in the retrigerant 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 corrossion of parts in the
refrigeration system.
Thorofore, tho indoor unit and tubing botween the indoor
and outdoor unit must be leak tested and evacuated to
remove any noncondonsables and moisture from tho
system.
1)Air Purging with a Vacuum Pump
$ Preparation
Check that each tube(both liquid and gas side tubes) between the indoor and
outdoor units has been properly
connected and all wiring for the test run has been completed. Remove the valve
caps from both the gas
and the liquid side service valves on the outdoor unit.
Note that both liquid and gas side service valves on the outdoor unit are kept
closed at this stage.
5 Leak test
1. Connect the manifold valve(with pressure gauges) and dry nitrogen gas
cylinder to this service port with
charge hoses.
CAUTION: Be sure to use a manifold valve for air
purging. If it is not available, use a stop valve for this
purpose. The “Hi” knob of the manifold valve must
always be kept close
2. Pressurize the system to no more than 150 P.S.I.G with
dry nitrogen gas and close the cylinder valve when the
gauge reading reached 150 P.S.I.G. Next, test for leaks
with 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 vertial standing position.
3. Do a leak test of all joints of the tubing (both indoor and outdoor) and
both gas and liquid side service valves.
Bubbles indicate a leak. Be sure to wipe off the soap with a clean cloth.
4. After the system is found to be free of leals, relieve the nitrogen
pressure by loosening the charge hose
connector at the nitrogen cylinder. When the system
pressure is reduced to normal, disconnect the hose from
the cyinder.
References
- Repair Your Grill: Shop Replacement Parts for 24,880 Models
- Lg Air Conditioner Parts - Select From 2329 Models