LG ARNU05GTRB4 Air Conditioner Instruction Manual

LG ARNU05GTRB4 Air Conditioner

Product Information

Specifications

• Model Numbers: ARNU05GTRB4, ARNU15GTQB4, ARNU28GTPA4, ARNU48GTMA4, ARNU07GTRB4, ARNU18GTQB4, ARNU30GTPA4, ARNU54GTMA4, ARNU09GTRB4, ARNU21GTQB4, ARNU36GTNA4, ARNU12GTRB4, ARNU24GTPA4, ARNU42GTMA4
• Instruction Manual Revision: MFL69440020 Rev.01_072519
• Manufacturer: LG
• Website: www.lg.com

Installation Parts

• Air Outlet
• Air Filter
• Air Intake
• Wired Remote Controller (Optional)
• Installation Tool
• Drain hose (1 EA)
• Washer for Clamp metal hanging bracket (2 EA)
• Clamp (Tie Wrap) (4 EA)
• Insulation for fitting (1 SET)
• Gas pipe and liquid pipe (Other)

Safety Instructions
The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance. The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.

• WARNING: This indicates that the failure to follow the instructions can cause serious injury or death.
• CAUTION: This indicates that the failure to follow the instructions can cause minor injury or damage to the product.

Product Usage Instructions

Installation
Selection of the Best Location
In order to select the best location for installation, please consider the following:

• Ceiling height should be 1,000 mm or more and 4,000 mm or less.
• Ceiling dimension should be 300 mm or more and 300 mm or less.
• Ceiling board should be 500 mm or more.
• If installing near the sea, take appropriate anti-corrosion measures.

Ceiling Dimension and Hanging Bolt Location
To ensure proper installation, follow the measurements and guidelines below:

• Ceiling opening for TQ/TR Chassis: 585~660 mm
• Ceiling opening for TM/TN/TP Chassis: 875 mm
• Hanging bolt for TM/TN/TP Chassis: 787 mm

Wiring Connection
Follow the provided wiring connection instructions for proper installation.

Installation of Decoration Panel
Refer to the decoration panel installation instructions for guidance on installing the panel.

Drain Piping
Ensure proper drain piping to prevent water leakage. Follow the drain piping instructions provided.

Ceiling Height Selection
Select the appropriate ceiling height according to the installation requirements.

DIP Switch Setting
Set the DIP switches according to the desired configuration. Refer to the DIP switch setting instructions for details.

Group Control Setting
If using multiple units for group control, follow the group control setting instructions to synchronize their operation.

Indoor Unit
Refer to the indoor unit’s specific instructions for further details on installation and usage.

FAQ

• Q: Where can I find the complete user manual?
  A: The complete user manual can be found on the LG website at www.lg.com.

• Q: How do I clean the air filter?
  A: To clean the air filter, follow these steps:

  • Turn off the air conditioner and unplug it from the power source.
  • Open the front panel of the indoor unit.
  • Remove the air filter from its compartment.
  • Rinse the filter under running water or gently vacuum it to remove dust and debris.
  • Allow the filter to dry completely before reinstalling it.

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 Cassette – 4Way
Original instruction

• ARNU05GTRB4
• ARNU07GTRB4
• ARNU09GTRB4
• ARNU12GTRB4
• ARNU15GTQB4
• ARNU18GTQB4
• ARNU21GTQB4
• ARNU24GTPA4
• ARNU28GTPA4
• ARNU30GTPA4
• ARNU36GTNA4
• ARNU42GTMA4
• ARNU48GTMA4
• ARNU54GTMA4

Installation Parts

Installation Tool

Screws for fixing panels are attached to decoration panel.

Safety Instructions

The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance.
The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.

This symbol is displayed to indicate matters and operations that can cause risk. Read the part with this symbol carefully and follow the instructions in order to avoid risk.

WARNING This indicates that the failure to follow the instructions can cause serious injury or death.
CAUTION This indicates that the failure to follow the instructions can cause the minor injury or damage to the product.

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 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.
  • Do not modify or extend the power cable.
  • There is risk of fire or electric shock.
  • 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.
  • 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 condenser 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.
  • 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.
  • Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control box cover are removed or opened.
  • Otherwise, it may cause fire, electric shock, explosion or death.
• Operation
  • Do not store or use flammable gas or combustibles near the product.
  • There is risk of fire or failure of product.

CAUTION

• Installation
  • Always check for gas (refrigerant) leakage 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.
  • In order to avoid a hazard due to inadvertent resetting of the thermal cut-out, this appliance must not be supplied through an external switching device, such as a timer, or connected to a circuit that is regularly switched on and off by the utility.
  • If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazrd.
  • This equipment shall be provided with a supply conductor complying with the national regulation.
  • Means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.

Installation

Read completely, then follow step by step.

Selection of the best location

• If the temperature might rise above 30 ℃ or the humidity might rise above RH 80 %, attach the Dew-Protective kit or use another insulation to the indoor body.

• Dew Protective kit is sold separately.
  Use glass wool material or polyethylene foam and make sure at least 10 mm thick.

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

• There should not be any obstacles to 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 have the maintenance space.

CAUTION In case that the unit is installed near the sea, the installation parts may be corroded by salt. The installation parts (and the unit) should be taken appropriate anti-corrosion measures.

• Please use an annexed sheet or the corrugated cardboard on the bottom of packing as installation sheet.
• When using the bottom sheet, please use it after separating the installation sheet from packing of the product floor by using a knife etc as a picture below.

Ceiling dimension and hanging bolt location

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

CAUTION

• This air-conditioner uses a drain pump.
• Install the unit horizontally using a level gauge.
• During the installation, care should be taken not to damage electric wires.
• 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.

NOTICE

• Avoid the following installation location.

  1. Such places as restaurants and kitchen where considerable amount of oil steam and flour is generated. These may cause heat exchange efficiency reduction, or water drops, drain pump mal-function.
     In these cases, take the following actions;
  • Make sure that ventilation fan is enough to cover all noxious gases from this place.
  • Ensure enough distance from the cooking room to install the air conditioner in such a place where it may not suck oily steam.
  2. Avoid installng air conditioner in such places where cooking oil or iron powder is generated.
  3. Avoid places where inflammable gas is generated.
  4. Avoid place where noxious gas is generated.
  5. Avoid places near high-frequency generators.

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

Wiring Connection

• Connect the wires to the terminals on the control box 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.

CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:

1. Never fail to have separate power specially for the air conditioner. As for the method of wiring, follow 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 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. Confirm the Specification of power source
5. Confirm that electrical capacity is sufficient.
6. Be sure that the starting voltage is maintained at more than 90 % of the rated voltage marked on the nameplate.
7. Confirm that the cable thickness is as specified in the power sources specification. (Particularly note the relation between cable length and thickness.)
8. Do not install the leakage breaker in a place that is wet or moist. Water or moist may cause short circuit.
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 an 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.)

NOTICE Refer to the table below when selecting the circuit breaker.

• Use the circuit breaker instead of fuse.
• MFA(Maximum Fuse Amperes) is used to select the circuit breaker and ground fault circuit interrupter.

WARNING

• Don’t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of the equipment utilizing multiple power sources.

Installation of Decoration Panel

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

1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by an amount 10 mm in length.) The fixing screws (hexagon M5 screw) are included the indoor unit box.
2. Remove the air inlet grille from the decoration panel. (Remove the hook for the air inlet grille cord.)
3. Hook the decoration panel keyhole ( ) on the screws fixed in step above, and slide the panel so that the screws reach the keyhole edge.
4. Retighten completely two temporarily fixed screws and the 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).

CAUTION Install certainly the decoration panel. Cool air leakage causes sweating.

• Water drops fall.

Drain Piping

• Drain piping must have a down-slope (1/50 to 1/100): be sure not to provide an 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 32 mm.
  Piping material: Polyvinyl chloride pipe VP-25 and pipe fittings

• Be sure to install heat insulation on the drain piping.
  Heat insulation material: Polyethylene foam with thickness more than 8 mm.

Drain test The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:

• 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.

CAUTION The supplied flexible drain hose should not be curved, or screwed. The curved or screwed hose may cause a leakage of water.

Attention

1. Possible drain-head height is up to 700 mm. So, it must be installed below 700 mm.
2. Keep the drain hose downward up to 1/50~1/100 inclination. Prevent any upward flow or reverse flow in any part.
3. 5 mm or thicker formed thermal insulator is provided for the drain pipe.
4. Upward routing is not allowed.
5. Be sure to check the drain pump for normal operation and abnormal noise when electrical wiring is complete.

Ceiling Height Selection
The ceiling type indoor unit is available to adjust indoor airflow rate by Installer setting of the wired remote controller for better service. Please select the height level from the below table.