Split-Type Room Air Conditioner

IMPORTANT NOTE

Read this manual and SAFETY MANUAL(if any) carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference.

Please check the applicable models, technical data, F-GAS(if any) and manufacturer information from the "Owner's Manual - Product Fiche" in the packaging of the outdoor unit (European Union products only) or in the packaging of the indoor unit (model dependent).

Image: A line drawing of a split-type air conditioner indoor unit.

Table of Contents

Safety Precautions ...............................................................................04

Owner's Manual

Unit Specifications and Features...........................................................08

1. Indoor unit display.........................................................................................................................08
2. Operating temperature..................................................................................................................09
3. Other features ..............................................................................................................................10
4. Setting angle of airflow.................................................................................................................11
5. Manual operation (without Remote)..............................................................................................11

Care and Maintenance......................................................................12

Troubleshooting.................................................................................14

Installation Manual

Accessories...........................................................................................17

Installation Summary - Indoor Unit ..................................................18

Unit Parts.............................................................................................19

Indoor Unit Installation.......................................................................20

1. Select installation location..............................................................................................................20
2. Attach mounting plate to wall........................................................................................................20
3. Drill wall hole for connective piping................................................................................................21
4. Prepare refrigerant piping...............................................................................................................22
5. Connect drain hose........................................................................................................................24
6. Connect signal and power cables...................................................................................................25
7. Wrap piping and cables..................................................................................................................26
8. Mount indoor unit.........................................................................................................................27

Outdoor Unit Installation.........................................................................27

1. Select installation location..............................................................................................................27
2. Install drain joint............................................................................................................................28
3. Anchor outdoor unit......................................................................................................................28
4. Connect signal and power cables...................................................................................................30

Refrigerant Piping Connection.........................................................31

A. Note on Pipe Length....................................................................................................................31

B. Connection Instructions –Refrigerant Piping.................................................................................31

1. Cut pipe.................................................................................................................................31
2. Remove burrs.........................................................................................................................32
3. Flare pipe ends.......................................................................................................................32
4. Connect pipes........................................................................................................................32

Air Evacuation...................................................................................34

1. Evacuation Instructions................................................................................................................34
2. Note on Adding Refrigerant.........................................................................................................35

Electrical and Gas Leak Checks........................................................36

Test Run.............................................................................................37

Packing and unpacking the unit .....................................................38

Safety Precautions

Read Safety Precautions Before Operation and Installation

Incorrect installation due to ignoring instructions can cause serious damage or injury. The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.

⚠️ WARNING
This symbol indicates the possibility of personnel injury or loss of life.

? CAUTION
This symbol indicates the possibility of property damage or serious consequences.

WARNING

This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision (European Union countries).

This appliance is not intended for use by persons(including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

WARNINGS FOR PRODUCT USE

• If an abnormal situation arises (like a burning smell), immediately turn off the unit and disconnect the power. Call your dealer for instructions to avoid electric shock, fire or injury.
• Do not insert fingers, rods or other objects into the air inlet or outlet. This may cause injury, since the fan may be rotating at high speeds.
• Do not use flammable sprays such as hair spray, lacquer or paint near the unit. This may cause fire or combustion.
• Do not operate the air conditioner in places near or around combustible gases. Emitted gas may collect around the unit and cause explosion.
• Do not operate your air conditioner in a wet room such as a bathroom or laundry room. Too much exposure to water can cause electrical components to short circuit.
• Do not expose your body directly to cool air for a prolonged period of time.
• Do not allow children to play with the air conditioner. Children must be supervised around the unit at all times.
• If the air conditioner is used together with burners or other heating devices, thoroughly ventilate the room to avoid oxygen deficiency.
• In certain functional environments, such as kitchens, server rooms, etc., the use of specially designed air-conditioning units is highly recommended.

CLEANING AND MAINTENANCE WARNINGS

• Turn off the device and disconnect the power before cleaning. Failure to do so can cause electrical shock.
• Do not clean the air conditioner with excessive amounts of water.
• Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents can cause fire or deformation.

CAUTION

• Turn off the air conditioner and disconnect the power if you are not going to use it for a long time.
• Turn off and unplug the unit during storms.
• Make sure that water condensation can drain unhindered from the unit.
• Do not operate the air conditioner with wet hands. This may cause electric shock.
• Do not use device for any other purpose than its intended use.
• Do not climb onto or place objects on top of the outdoor unit.
• Do not allow the air conditioner to operate for long periods of time with doors or windows open, or if the humidity is very high.

ELECTRICAL WARNINGS

• Only use the specified power cord. If the power cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
• Keep power plug clean. Remove any dust or grime that accumulates on or around the plug. Dirty plugs can cause fire or electric shock.
• Do not pull power cord to unplug unit. Hold the plug firmly and pull it from the outlet. Pulling directly on the cord can damage it, which can lead to fire or electric shock.
• Do not modify the length of the power supply cord or use an extension cord to power the unit.
• Do not share the electrical outlet with other appliances. Improper or insufficient power supply can cause fire or electrical shock.
• The product must be properly grounded at the time of installation, or electrical shock may occur.
• For all electrical work, follow all local and national wiring standards, regulations, and the Installation Manual. Connect cables tightly, and clamp them securely to prevent external forces from damaging the terminal. Improper electrical connections can overheat and cause fire, and may also cause shock. All electrical connections must be made according to the Electrical Connection Diagram located on the panels of the indoor and outdoor units.
• All wiring must be properly arranged to ensure that the control board cover can close properly. If the control board cover is not closed properly, it can lead to corrosion and cause the connection points on the terminal to heat up, catch fire, or cause electrical shock.
• If connecting power to fixed wiring, an all-pole disconnection device which has at least 3mm clearances in all poles, and have a leakage current that may exceed 10mA, the residual current device(RCD) having a rated residual operating current not exceeding 30mA, and disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.

TAKE NOTE OF FUSE SPECIFICATIONS

The air conditioner's circuit board (PCB) is designed with a fuse to provide overcurrent protection. The specifications of the fuse are printed on the circuit board, such as: T3.15AL/250VAC, T5AL/250VAC, T3.15A/250VAC, T5A/250VAC, T20A/250VAC, T30A/250VAC, etc.

NOTE: For the units using R32 or R290 refrigerant, only the blast-proof ceramic fuse can be used.

UV-C lamp(Applicable to the unit contains an UV-C lamp only)

This appliance contains a UV-C lamp. Read the maintenance instructions before opening the appliance.

• Do not operate UV-C lamps outside of the appliance.
• Appliances that are obviously damaged must not be operated.
• Unintended use of the appliance or damage to the housing may result in the escape of dangerous UV-C radiation. UV-C radiation may, even in small doses, cause harm to the eyes and skin.

• Before opening doors and access panels bearing the ULTRAVIOLET RADIATION hazard symbol for the conducting USER MAINTENANCE, it is recommended to disconnect the power.
• The UV-C lamp can not be cleaned, repaired and replaced.
• UV-C BARRIERS bearing the ULTRAVIOLET RADIATION hazard symbol should not be removed.

⚠️ WARNING This appliance contains an UV emitter. Do not stare at the light source.

WARNINGS FOR PRODUCT INSTALLATION

• Installation must be performed by an authorized dealer or specialist. Defective installation can cause water leakage, electrical shock, or fire.
• Installation must be performed according to the installation instructions. Improper installation can cause water leakage, electrical shock, or fire. (In North America, installation must be performed in accordance with the requirement of NEC and CEC by authorized personnel only.)
• Contact an authorized service technician for repair or maintenance of this unit. This appliance shall be installed in accordance with national wiring regulations.
• Only use the included accessories, parts, and specified parts for installation. Using non-standard parts can cause water leakage, electrical shock, fire, and can cause the unit to fail.
• Install the unit in a firm location that can support the unit's weight. If the chosen location cannot support the unit's weight, or the installation is not done properly, the unit may drop and cause serious injury and damage.
• Install drainage piping according to the instructions in this manual. Improper drainage may cause water damage to your home and property.
• For units that have an auxiliary electric heater, do not install the unit within 1 meter (3 feet) of any combustible materials.
• Do not install the unit in a location that may be exposed to combustible gas leaks. If combustible gas accumulates around the unit, it may cause fire.
• Do not turn on the power until all work has been completed.
• When moving or relocating the air conditioner, consult experienced service technicians for disconnection and reinstallation of the unit.
• How to install the appliance to its support, please read the information for details in "indoor unit installation" and "outdoor unit installation" sections.

Note about Fluorinated Gasses(Not applicable to the unit using R290 Refrigerant)

• This air-conditioning unit contains fluorinated greenhouse gasses. For specific information on the type of gas and the amount, please refer to the relevant label on the unit itself or the "Owner's Manual - Product Fiche" in the packaging of the outdoor unit. (European Union products only).
• Installation, service, maintenance and repair of this unit must be performed by a certified technician.
• Product uninstallation and recycling must be performed by a certified technician.
• For equipment that contains fluorinated greenhouse gases in quantities of 5 tonnes of CO2 equivalent or more, but of less than 50 tonnes of CO2 equivalent, If the system has a leak-detection system installed, it must be checked for leaks at least every 24 months.
• When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.

WARNING for Using R32/R290 Refrigerant

• When flammable refrigerant are employed, appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation.
• For R32 refrigerant models: Appliance shall be installed, operated and stored in a room with a floor area larger than 4m².
• For R290 refrigerant models, appliance shall be installed, operated and stored in a room with a floor area larger than:
  • <=9000Btu/h units: 13m²
  • >9000Btu/h and <=12000Btu/h units: 17m²
  • >12000Btu/h and <=18000Btu/h units: 26m²
  • >18000Btu/h and <=24000Btu/h units: 35m²
• Reusable mechanical connectors and flared joints are not allowed indoors. (EN Standard Requirements).
• Mechanical connectors used indoors shall have a rate of not more than 3g/year at 25% of the maximum allowable pressure. When mechanical connectors are reused indoors, sealing parts shall be renewed. When flared joints are reused indoors, the flare part shall be re-fabricated. (UL Standard Requirements)
• When mechanical connectors are reused indoors, sealing parts shall be renewed. When flared joints are reused indoors, the flare part shall be re-fabricated. (IEC Standard Requirements)
• Mechanical connectors used indoors shall comply with ISO 14903.

European Disposal Guidelines

This marking shown on the product or its literature, indicates that waste electrical and electrical equipment should not be mixed with general household waste.

Correct Disposal of This Product (Waste Electrical & Electronic Equipment)

This appliance contains refrigerant and other potentially hazardous materials. When disposing of this appliance, the law requires special collection and treatment. Do not dispose of this product as household waste or unsorted municipal waste.

When disposing of this appliance, you have the following options:

• Dispose of the appliance at designated municipal electronic waste collection facility.
• When buying a new appliance, the retailer will take back the old appliance free of charge.
• The manufacturer will take back the old appliance free of charge.
• Sell the appliance to certified scrap metal dealers.

Special notice

Disposing of this appliance in the forest or other natural surroundings endangers your health and is bad for the environment. Hazardous substances may leak into the ground water and enter the food chain.

Unit Specifications and Features

Indoor unit display

Image: Diagram showing the indoor unit with labels for Front Panel, Louver, Air Filter (pull up), Power Cable, ECO intelligent eye, Display window, Remote Control, Remote Control Holder. It also shows three display modes (A, B, C) with numbers like "88.8".

"88.8" "88" Displays temperature, operation feature and Error codes:

• "07" for 3 seconds when: TIMER ON is set (if the unit is OFF, " " remains on when TIMER ON is set). FRESH, UV-C lamp, SWING, TURBO, ECO, BREEZE AWAY, ECO INTELLIGENT EYE or SILENCE feature is turned on.
• " " for 3 seconds when: TIMER OFF is set. FRESH, UV-C lamp, SWING, TURBO, ECO, BREEZE AWAY, ECO INTELLIGENT EYE or SILENCE feature is turned off.
• "CL" when defrosting (for cooling & heating units).
• " " when Active Clean feature is turned on (For Inverter split type).
• " " when the Self clean feature is turned on (For fixed-speed type).
• " " when 8°C(46°F) heating mode is turned on (some units).
• "eco" when ECO feature is activated (some units).
• " " when wireless control feature is activated (some units).

NOTE: Different models have different front panel and display window. Not all the indicators describing below are available for the air conditioner you purchased. Please check the indoor display window of the unit you purchased. Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be slightly different. The actual shape shall prevail.

Operating temperature

When your air conditioner is used outside of the following temperature ranges, certain safety protection features may activate and cause the unit to disable.

Inverter Split Type

Fixed-speed Type

NOTE: Room relative humidity less than 80%. If the air conditioner operates in excess of this figure, the surface of the air conditioner may attract condensation. Please sets the vertical air flow louver to its maximum angle (vertically to the floor), and set HIGH fan mode.

To further optimize the performance of your unit, do the following:

• Keep doors and windows closed.
• Limit energy usage by using TIMER ON and TIMER OFF functions.
• Do not block air inlets or outlets.
• Regularly inspect and clean air filters.

Other Features

• Auto-Restart (some units): If the unit loses power, it will automatically restart with the prior settings once power has been restored.
• Anti-mildew (some units): When turning off the unit from COOL, AUTO (COOL), or DRY modes, the air conditioner will continue operate at very low power to dry up condensed water and prevent mildew growth.
• Wireless Control (some units): Wireless control allows you to control your air conditioner using your mobile phone and a wireless connection. For the USB device access, replacement, maintenance operations must be carried out by professional staff.
• Louver Angle Memory (some units): When turning on your unit, the louver will automatically resume its former angle.
• Active Clean function (some units): The Active Clean Technology washes away dust, mold, and grease that may cause odors when it adheres to the heat exchanger by automatically freezing and then rapidly thawing the frost. A "pi-pi" sound will be heard. The Active clean operation is used to produce more condensed water to improve the cleaning effect, and the cold air will blow out. After cleaning, the internal wind wheel then keeps operating with hot air to blow-dry the evaporator, thus preventing the growth of mold and keeping the inside clean. When this function is turned on, the indoor unit display window appears "CL", after 20 to 45 minutes, the unit will turn off automatically and cancel Active Clean function.
• Breeze Away (some units): This feature avoids direct air flow blowing on the body and make you feel indulging in silky coolness.
• Refrigerant Leakage Detection (some units): The indoor unit will automatically display "ELOC" when it detects refrigerant leakage.
• ECO Intelligent eye (some units): The system is controlled intelligently under Intelligent eye mode. It can detect the people's activities in the room. In cooling mode, when you are away for 30 minutes, the unit will automatically lower the frequency to save energy (for Inverter models only). And the unit will automatically start and resume operation if sensing human activity again.
• Sleep Operation: The SLEEP function is used to decrease energy use while you sleep (and don't need the same temperature settings to stay comfortable). This function can only be activated via remote control. And the Sleep function is not available in FAN or DRY mode. When in COOL mode, the unit will increase the temperature by 1°C (2°F) after 1 hour, and will increase an additional 1°C (2°F) after another hour. When in HEAT mode, the unit will decrease the temperature by 1°C (2°F) after 1 hour, and will decrease an additional 1°C (2°F) after another hour. The sleep feature will stop after 8 hours and the system will keep running with final situation.

Image: Diagram illustrating SLEEP Operation showing temperature changes over time in Cool and Heat modes.

NOTE: For multi-split air conditioners, the following functions are not available: Active clean function, Silence feature, Breeze away function, Refrigerant leakage detection function and Eco feature.

Setting Angle of Air Flow

Setting vertical angle of air flow

While the unit is on, use the SWING button on remote control to set the direction (vertical angle) of airflow. Please refer to the Remote Control Manual for details.

NOTE ON LOUVER ANGLES

When using COOL or DRY mode, do not set louver at too vertical an angle for long periods of time. This can cause water to condense on the louver blade, which will drop on your floor or furnishings. When using COOL or HEAT mode, setting the louver at too vertical an angle can reduce the performance of the unit due to restricted air flow. NOTE: According to the relative standards requirement, please sets the vertical air flow louver to its maximum angle under heating capacity test.

Setting horizontal angle of air flow

The horizontal angle of the airflow must be set manually. Grip the deflector rod (See Fig.B) and manually adjust it to your preferred direction. For some units, the horizontal angle of the airflow can be set by remote control. please refer to the Remote Control Manual.

Image: Diagram showing airflow range and a note about not moving the louver by hand. Fig. A shows the range.

Image: Diagram showing the deflector rod. Fig. B.

Manual Operation (without remote)

? CAUTION

The manual button is intended for testing purposes and emergency operation only. Please do not use this function unless the remote control is lost and it is absolutely necessary. To restore regular operation, use the remote control to activate the unit. Unit must be turned off before manual operation.

To operate your unit manually:

1. Locate the MANUAL CONTROL button on the right-hand side panel of the unit.
2. Press the MANUAL CONTROL button one time to activate FORCED AUTO mode.
3. Press the MANUAL CONTROL button again to activate FORCED COOLING mode.
4. Press the MANUAL CONTROL button a third time to turn the unit off.

Image: Diagram showing the manual control button location. Fig. C.

Care and Maintenance

Cleaning Your Indoor Unit

BEFORE CLEANING OR MAINTENANCE

⚠️ ALWAYS TURN OFF YOUR AIR CONDITIONER SYSTEM AND DISCONNECT ITS POWER SUPPLY BEFORE CLEANING OR MAINTENANCE.

? CAUTION

Only use a soft, dry cloth to wipe the unit clean. If the unit is especially dirty, you can use a cloth soaked in warm water to wipe it clean.

• Do not use chemicals or chemically treated cloths to clean the unit.
• Do not use benzene, paint thinner, polishing powder or other solvents to clean the unit. They can cause the plastic surface to crack or deform.
• Do not use water hotter than 40°C (104°F) to clean the front panel. This can cause the panel to deform or become discolored.

Cleaning Your Air Filter

A clogged air filter can reduce the cooling efficiency of your unit, can also make the air flow irregular and too much noisy, so please clean the air filter as often as necessary. Once the abnormal noise of air flow is heard, please clean the air filter immediately.

1. The air filter is on the top of the air conditioner.
2. Hold both side of the top filter in the place marked with "PULL", then pull it upwards.
3. If your filter has small air freshening filters, unclip them from the larger filter. Clean these air freshening filters with a hand-held vacuum.
4. Clean the large air filter with warm, soapy water. Be sure to use a mild detergent.
5. Rinse the filter with fresh water, then shake off excess water.
6. Dry it in a cool, dry place, and refrain from exposing it to direct sunlight.
7. When dry, re-clip the air freshening filter to the larger filter, then install it back on the indoor unit.

Image: Diagram showing how to pull out the air filter.

Image: Diagram showing how to remove and clean air freshening filters.

? CAUTION

• Before changing the filter or cleaning, turn off the unit and disconnect its power supply.
• When removing filter, do not touch metal parts in the unit. The sharp metal edges can cut you.
• Do not use water to clean the inside of the indoor unit. This can destroy insulation and cause electrical shock.
• Do not expose filter to direct sunlight when drying. This can shrink the filter.

Air Filter Reminders (Optional)

Air Filter Cleaning Reminder

After 240 hours of use, the display window on the indoor unit will flash "CL." This is a reminder to clean your filter. After 15 seconds, the unit will revert to its previous display.

To reset the reminder, press the LED button on your remote control 4 times, or press the MANUAL CONTROL button 3 times. If you don't reset the reminder, the "CL" indicator will flash again when you restart the unit.

Air Filter Replacement Reminder

After 2,880 hours of use, the display window on the indoor unit will flash "nF." This is a reminder to replace your filter. After 15 seconds, the unit will revert to its previous display.

To reset the reminder, press the LED button on your remote control 4 times, or press the MANUAL CONTROL button 3 times. If you don't reset the reminder, the "nF" indicator will flash again when you restart the unit.

Maintenance – Long Periods of Non-Use

If you plan not to use your air conditioner for an extended period of time, do the following:

Image: Icons showing: Clean all filters, Turn off unit and disconnect power, Turn on FAN function until unit dries out completely, Remove batteries from remote control.

Maintenance – Pre-Season Inspection

After long periods of non-use, or before periods of frequent use, do the following:

Image: Icons showing: Check for damaged wires, Clean all filters, Check for leaks, Replace batteries, Make sure nothing is blocking all air inlets and outlets.

? CAUTION

• Any maintenance and cleaning of outdoor unit should be performed by an authorized dealer or a licensed service provider.
• Any unit repairs should be performed by an authorized dealer or a licensed service provider.

Troubleshooting

SAFETY PRECAUTIONS

If ANY of the following conditions occurs, turn off your unit immediately!

• The power cord is damaged or abnormally warm
• You smell a burning odor
• The unit emits loud or abnormal sounds
• A power fuse blows or the circuit breaker frequently trips
• Water or other objects fall into or out of the unit

DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AN AUTHORIZED SERVICE PROVIDER IMMEDIATELY!

Common Issues

The following problems are not a malfunction and in most situations will not require repairs.

NOTE: If problem persists, contact a local dealer or your nearest customer service center. Provide them with a detailed description of the unit malfunction as well as your model number.

Troubleshooting

When troubles occur, please check the following points before contacting a repair company.

NOTE: If your problem persists after performing the checks and diagnostics above, turn off your unit immediately and contact an authorized service center.

Accessories

The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to install the air conditioner. Improper installation may result in water leakage, electrical shock and fire, or cause the equipment to fail. The items are not included with the air conditioner must be purchased separately.

Image: Diagram showing how to install magnetic ring and belt.

Installation Summary - Indoor Unit

Image: A step-by-step visual guide for indoor unit installation with 9 steps, each with a small diagram: 1. Select Installation Location, 2. Determine Wall Hole Position, 3. Attach Mounting Plate, 4. Drill Wall Hole, 5. Connect Piping, 6. Connect Wiring, 7. Prepare Drain Hose, 8. Wrap Piping and Cable, 9. Mount Indoor Unit. The diagrams show clearances and basic actions.

Unit Parts

NOTE: The installation must be performed in accordance with the requirement of local and national standards. The installation may be slightly different in different areas.

Image: Two diagrams showing the indoor and outdoor units with various parts labeled with numbers (1-11).

List of Parts:

1. Wall Mounting Plate
2. Front Panel
3. Power Cable (Some Units)
4. Louver
5. Air filter (pull it out)
6. Drainage Pipe
7. Signal Cable
8. Refrigerant Piping
9. Remote Controller
10. Remote Controller Holder (Some Units)
11. Outdoor Unit Power Cable (Some Units)

Note on Illustrations: Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be slightly different. The actual shape shall prevail.

Indoor Unit Installation

Installation Instructions – Indoor unit

PRIOR TO INSTALLATION

Before installing the indoor unit, refer to the label on the product box to make sure that the model number of the indoor unit matches the model number of the outdoor unit.

Step 1: Select installation location

Before installing the indoor unit, you must choose an appropriate location. The following are standards that will help you choose an appropriate location for the unit.

Proper installation locations meet the following standards:

• Good air circulation
• Convenient drainage
• Noise from the unit will not disturb other people
• Firm and solid—the location will not vibrate
• Strong enough to support the weight of the unit
• A location at least one meter from all other electrical devices (e.g., TV, radio, computer)

DO NOT install unit in the following locations:

• Near any source of heat, steam, or combustible gas
• Near flammable items such as curtains or clothing
• Near any obstacle that might block air circulation
• Near the doorway
• In a location subject to direct sunlight

NOTE ABOUT WALL HOLE:

If there is no fixed refrigerant piping: While choosing a location, be aware that you should leave ample room for a wall hole (see Drill wall hole for connective piping step) for the signal cable and refrigerant piping that connect the indoor and outdoor units. The default position for all piping is the right side of the indoor unit (while facing the unit). However, the unit can accommodate piping to both the left and right.

Image: Diagram showing proper distance from walls and ceiling for indoor unit installation, with measurements (12cm, 2.3m).

Note:

• If no need the back holder to prop up the unit: Finishing the pipe and cable connections before mount the indoor unit on the wall. If the installation height is limited, 5cm from the ceiling is allowable, but this can lower product performance. To ensure enough space to install and remove the top air filter, keep at least 10cm or more from the ceiling.
• Need the back holder to prop up the unit: If connecting pipe and cable with front panel open, the minimum distance from ceiling is 22cm or more, if connecting pipe and cable without front panel (remove it), the minimum distance from ceiling is 11cm or more.

Step 2: Attach mounting plate to wall

The mounting plate is the device on which you will mount the indoor unit.

• Remove the screw that attaches the mounting plate to the back of the indoor unit.

Image: Diagram showing screw removal for mounting plate.

• Secure the mounting plate to the wall with the screws provided. Make sure that mounting plate is flat against the wall.

NOTE FOR CONCRETE OR BRICK WALLS:

If the wall is made of brick, concrete, or similar material, drill 5mm-diameter (0.2in-diameter) holes in the wall and insert the sleeve anchors provided. Then secure the mounting plate to the wall by tightening the screws directly into the clip anchors.

Step 3: Drill wall hole for connective piping

1. Determine the location of the wall hole based on the position of the mounting plate. Refer to Mounting Plate Dimensions.
2. Using a 65mm (2.5in) or 90mm(3.54in) (depending on models) core drill, drill a hole in the wall. Make sure that the hole is drilled at a slight downward angle, so that the outdoor end of the hole is lower than the indoor end by about 5mm to 7mm (0.2-0.275in). This will ensure proper water drainage.

Image: Diagram showing the wall hole drilling process, including indoor/outdoor perspective, angle, and dimensions. It also shows a bubble level on the mounting plate.

? CAUTION The Bubble level on the mounting plate can't be removed. If it is broken, make sure to clean up the leaking liquid.

Note: When the gas side connective pipe is Ø 16mm(5/8in) or more, the wall hole should be 90mm(3.54in).

3. Place the protective wall cuff in the hole. This protects the edges of the hole and will help seal it when you finish the installation process.

? CAUTION When drilling the wall hole, make sure to avoid wires, plumbing, and other sensitive components.

MOUNTING PLATE DIMENSIONS

Different models have different mounting plates. For the convenience of installation, there are bubble level, carved dimensions on the mounting plate. Please install the plate and drill wall hole according to the information of the mounting plate. See the figures below.

Image: Diagrams showing correct orientation of Mounting Plate and dimensions for Model A, Model B, and Model C, including pipe hole sizes and edge-to-center measurements.

Step 4: Prepare refrigerant piping

The refrigerant piping is inside an insulating sleeve attached to the back of the unit. You must prepare the piping before passing it through the hole in the wall. Refer to the Refrigerant Piping Connection section of this manual for detailed instructions on pipe flaring and flare torque requirements, technique, etc.

NOTE ON PIPING ANGLE

Refrigerant piping can exit the indoor unit from four different angles:

• Left-hand side
• Left rear
• Right-hand side
• Right rear

Refer to figures below for details.

Image: Diagrams showing the four possible angles for refrigerant piping exit.

If refrigerant piping is already embedded in the wall, do the following:

Step 1: Hook the indoor unit on the mounting plate:

1. Keep in mind that the hooks on the mounting plate are smaller than the holes on the back of the unit. If you find that you don't have ample room to connect embedded pipes to the indoor unit, the unit can be adjusted left or right by about 30-50mm (1.18-1.95in), depending on the model.

Image: Diagram showing adjustment range for the indoor unit.

Step 2: Prepare refrigerant piping:

1. Open and fix the position of the panel, then, open the covers of the two lock blocks, unscrew the screw showed in the picture below, then hold both sides of the lower panel in the place marked "PULL", pull it upwards to release the buckles, then take the lower panel down.

Image: Diagram showing how to open the panel and unscrew the screw. Model A shown.

Image: Diagram showing how to open the cover and unscrew screws, and how to pull the lower panel. Model B shown.

NOTE ON PIPING CONNECTING

In some locations of US, a conduit tube must be used to connect the cable. To ensure an enough space for the pipes running and the machine is against the wall after installation, It is recommended to attach the drain hose to the right-hand side (when you're facing the back of the unit). When choose Left-hand side or Right-hand side piping, please make sure that the pipes come out horizontally so as not to affect the lower panel installation.

? CAUTION Be extremely careful not to dent or damage the piping while bending them away from the unit. Any dents in the piping will affect the unit's performance.

If there is no refrigerant piping embedded in the wall, do the following:

1. Based on the position of the wall hole relative to the mounting plate, choose the side from which the piping will exit the unit.
2. If the wall hole is behind the unit, keep the knock-out panel in place. If the wall hole is to the side of the indoor unit, remove the plastic knock-out panel from that side of the unit. (See figure below). This will create a slot through which your piping can exit the unit. Use needle nose pliers if the plastic panel is too difficult to remove by hand.

Image: Diagram showing knock-out panel removal.

2. Use the holder at the back of the unit to prop up the unit, giving you enough room to connect the refrigerant piping, signal cable, and drain hose.

Image: Diagram showing how to use the holder to prop up the unit.

Step 3. Connect drain hose and refrigerant piping (refer to Refrigerant Piping Connection section of this manual for instructions).

Step 4. Keep pipe connection point exposed to perform the leak test (refer to Electrical Checks and Leak Checks section of this manual).

Step 5. After the leak test, wrap the connection point with insulation tape.

Step 6. Remove the bracket or wedge that is propping with insulation tape.

Step 7. Using even pressure, push down on the bottom half of the unit. Keep pushing down until the unit snaps onto the hooks along the bottom of the mounting plate.

Image: Diagram showing cutting the insulating sleeve.

3. Use scissors to cut down the length of the insulating sleeve to reveal about 40mm (1.57in) of the refrigerant piping. This serves two purposes:
   • To facilitate the Refrigerant Piping Connection process.
   • To facilitate Gas Leak Checks and enable you to check for dents.
4. Use the holder at the back of the unit to prop up the unit, giving you enough room to connect the refrigerant piping, signal cable, and drain hose.
5. Connect the indoor unit's refrigerant piping to the connective piping that will join the indoor and outdoor units. Refer to the Refrigerant Piping Connection section of this manual for detailed instructions.
6. Based on the position of the wall hole relative to the mounting plate, determine the necessary angle of your piping.
7. Grip the refrigerant piping at the base of the bend.
8. Slowly, with even pressure, bend the piping towards the hole. Do not dent or damage the piping during the process.

Step 5: Connect drain hose

By default, the drain hose is attached to the left-hand side of unit (when you're facing the back of the unit). However, it can also be attached to the right-hand side. To ensure proper drainage, attach the drain hose on the same side that your refrigerant piping exits the unit.

Note: In some locations of US, if the machine has installed the conduit panel, please choose right-hand side drainage.

• Wrap the connection point firmly with Teflon tape to ensure a good seal and to prevent leaks.
• Remove the air filter and pour a small amount of water into the drain pan to make sure that water flows from the unit smoothly.

NOTE ON DRAIN HOSE PLACEMENT

Make sure to arrange the drain hose according to the following figures.

• DO NOT kink the drain hose.
• DO NOT create a water trap.
• DO NOT put the end of drain hose in water or a container that will collect water.

Image: Diagrams showing CORRECT and NOT CORRECT drain hose placement.

Image: Diagram showing how to plug the unused drain hole.

BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE REGULATIONS

• All wiring must comply with local and national electrical codes, regulations and must be installed by a licensed electrician.
• All electrical connections must be made according to the Electrical Connection Diagram located on the panels of the indoor and outdoor units.
• If there is a serious safety issue with the power supply, stop work immediately. Explain your reasoning to the client, and refuse to install the unit until the safety issue is properly resolved.
• Power voltage should be within 90-110% of rated voltage. Insufficient power supply can cause malfunction, electrical shock, or fire.
• If connecting power to fixed wiring, a surge protector and main power switch should be installed.
• If connecting power to fixed wiring, a switch or circuit breaker that disconnects all poles and has a contact separation of at least 1/8in (3mm) must be incorporated in the fixed wiring. The qualified technician must use an approved circuit breaker or switch.
• Only connect the unit to an individual branch circuit outlet. Do not connect another appliance to that outlet.
• Make sure to properly ground the air conditioner.
• Every wire must be firmly connected. Loose wiring can cause the terminal to overheat, resulting in product malfunction and possible fire.
• Do not let wires touch or rest against refrigerant tubing, the compressor, or any moving parts within the unit.
• If the unit has an auxiliary electric heater, it must be installed at least 1 meter (40in) away from any combustible materials.
• To avoid getting an electric shock, never touch the electrical components soon after the power supply has been turned off. After turning off the power, always wait 10 minutes or more before you touch the electrical components.

⚠️ BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK, TURN OFF THE MAIN POWER TO THE SYSTEM.

Step 6: Connect signal and power cables

The signal cable enables communication between the indoor and outdoor units. You must first choose the right cable size before preparing it for connection.

Cable Types:

• Indoor Power Cable (if applicable): H05VV-F or H05V2V2-F
• Outdoor Power Cable: H07RN-F or H05RN-F
• Signal Cable: H07RN-F

Note: In North America, choose the cable type according to the local electrical codes and regulations.

⚠️ ALL WIRING MUST BE PERFORMED STRICTLY IN ACCORDANCE WITH THE WIRING DIAGRAM LOCATED ON THE BACK OF THE INDOOR UNIT'S FRONT PANEL.

1. Feed the signal wire through this slot, from the back of the unit to the front.
2. Facing the front of the unit, connect the wire according to the indoor unit's wiring diagram, connect the u-lug and firmly screw each wire to its corresponding terminal.

Image: Diagram showing opening the front panel, removing the lower panel, and accessing the terminal block.

CHOOSE THE RIGHT CABLE SIZE

The size of the power supply cable, signal cable, fuse, and switch needed is determined by the maximum current of the unit. The maximum current is indicated on the nameplate located on the side panel of the unit. Refer to this nameplate to choose the right cable, fuse, or switch.

Note: In North America, please choose the right cable size according to the Minimum Circuit Ampacity indicated on the nameplate of the unit.

1. Open and fix the position of the panel, then, open the covers of the two lock blocks, unscrew the screw, then hold both sides of the lower panel in the place marked "PULL", pull it upwards to release the buckles, then take the lower panel down (please refer to Page 22-23).
2. Open the wire box cover to connect the cable.
3. Unscrew the cable clamp below the terminal block and place it to the side.
4. Facing the back of the unit, remove the plastic panel on the bottom left-hand side.

Image: Diagram showing terminal block, cable clamp, rat baffle, and knock-out panel.

Note: If the size of the cable is too big, remove the middle small plastic knock-out panel to create a slot through which the cable can exit. If you want to remove the chassis or drain hose, please remove the rat baffle first.

In North America:

1. Remove the knock-out panel to create a slot through which the conduit tube can install. Then make the cable through the conduit tube and connect to the indoor unit.

? CAUTION DO NOT MIX UP LIVE AND NULL WIRES. This is dangerous, and can cause the air conditioning unit to malfunction.

7. After checking to make sure every connection is secure, use the cable clamp to fasten the signal cable to the unit. Screw the cable clamp down tightly.
8. Replace the wire cover on the front of the unit, and the plastic panel on the back.

NOTE ABOUT WIRING

THE WIRING CONNECTION PROCESS MAY DIFFER SLIGHTLY BETWEEN UNITS AND REGIONS.

Step 7: Wrapping and cables

Before passing the piping, drain hose, and the signal cable through the wall hole, you must bundle them together to save space, protect them, and insulate them (This may not applicable for some locations in US).

1. Bundle the drain hose, refrigerant pipes, and signal cable as shown below:

Image: Diagram showing how to bundle the drain hose, refrigerant pipes, and signal cable, with labels like "Indoor Unit", "Space behind unit", "Refrigerant piping", "Insulation tape", "Signal wire", "Drain hose".

DRAIN HOSE MUST BE ON BOTTOM Make sure that the drain hose is at the bottom of the bundle. Putting the drain hose at the top of the bundle can cause the drain pan to overflow, which can lead to fire or water damage.

DO NOT INTERTWINE SIGNAL CABLE WITH OTHER WIRES While bundling these items together, do not intertwine or cross the signal cable with any other wiring.

2. Using adhesive vinyl tape, attach the drain hose to the underside of the refrigerant pipes.
3. Using insulation tape, wrap the signal wire, refrigerant pipes, and drain hose tightly together. Double-check that all items are bundled.

DO NOT WRAP ENDS OF PIPING When wrapping the bundle, keep the ends of the piping unwrapped. You need to access them to test for leaks at the end of the installation process (refer to Electrical Checks and Leak Checks section of this manual).

Step 8: Mount indoor unit

If you installed new connective piping to the outdoor unit, do the following:

1. If you have already passed the refrigerant piping through the hole in the wall, proceed to Step 4.
2. Otherwise, double-check that the ends of the refrigerant pipes are sealed to prevent dirt or foreign materials from entering the pipes.
3. Slowly pass the wrapped bundle of refrigerant pipes, drain hose, and signal wire through the hole in the wall.
4. Hook the top of the indoor unit on the upper hook of the mounting plate.
5. Check that unit is hooked firmly on mounting by applying slight pressure to the left and right-hand sides of the unit. The unit should not jiggle or shift.
6. Using even pressure, push down on the bottom half of the unit. Keep pushing down until the unit snaps onto the hooks along the bottom of the mounting plate.
7. Again, check that the unit is firmly mounted by applying slight pressure to the left and the right-hand sides of the unit.

Outdoor Unit Installation

Install the unit by following local codes and regulations, there may be differ slightly between different regions.

Image: Diagram showing recommended clearances for the outdoor unit (30cm left, 60cm above, 200cm front, 30cm back, 60cm right).

Installation Instructions – Outdoor unit

Step 1: Select installation location

Before installing the outdoor unit, you must choose an appropriate location. The following are standards that will help you choose an appropriate location for the unit.

Proper installation locations meet the following standards:

• Meets all spatial requirements shown in Installation Space Requirements above.
• Good air circulation and ventilation
• Firm and solid—the location can support the unit and will not vibrate
• Noise from the unit will not disturb others
• Protected from prolonged periods of direct sunlight or rain
• Where snowfall is anticipated, take appropriate measures to prevent ice buildup and coil damage.

DO NOT install unit in the following locations:

• Near an obstacle that will block air inlets and outlets
• Near a public street, crowded areas, or where noise from the unit will disturb others
• Near animals or plants that will be harmed by hot air discharge
• Near any source of combustible gas
• In a location that is exposed to large amounts of dust
• In a location exposed to a excessive amounts of salty air

SPECIAL CONSIDERATIONS FOR EXTREME WEATHER

If the unit is exposed to heavy wind:

Install unit so that air outlet fan is at a 90° angle to the direction of the wind. If needed, build a barrier in front of the unit to protect it from extremely heavy winds. See Figures below.

Image: Diagrams showing wind direction and a wind baffle.

If the unit is frequently exposed to heavy rain or snow:

Build a shelter above the unit to protect it from the rain or snow. Be careful not to obstruct air flow around the unit.

If the unit is frequently exposed to salty air (seaside):

Use outdoor unit that is specially designed to resist corrosion.

Step 2: Install drain joint (Heat pump unit only)

Before bolting the outdoor unit in place, you must install the drain joint at the bottom of the unit. Note that there are two different types of drain joints depending on the type of outdoor unit.

If the drain joint comes with a rubber seal (see Fig. A), do the following:

1. Fit the rubber seal on the end of the drain joint that will connect to the outdoor unit.
2. Insert the drain joint into the hole in the base pan of the unit.
3. Rotate the drain joint 90° until it clicks in place facing the front of the unit.
4. Connect a drain hose extension (not included) to the drain joint to redirect water from the unit during heating mode.

If the drain joint doesn't come with a rubber seal (see Fig. B), do the following:

1. Insert the drain joint into the hole in the base pan of the unit. The drain joint will click in place.
2. Connect a drain hose extension (not included) to the drain joint to redirect water from the unit during heating mode.

Image: Diagrams showing drain joint types A (with seal) and B (without seal), and the base pan hole.

IN COLD CLIMATES

In cold climates, make sure that the drain hose is as vertical as possible to ensure swift water drainage. If water drains too slowly, it can freeze in the hose and flood the unit.

Step 3: Anchor outdoor unit

The outdoor unit can be anchored to the ground or to a wall-mounted bracket with bolt(M10). Prepare the installation base of the unit according to the dimensions below.

UNIT MOUNTING DIMENSIONS

The following is a list of different outdoor unit sizes and the distance between their mounting feet. Prepare the installation base of the unit according to the dimensions below.

Image: Diagram showing outdoor unit dimensions (A, B, H, W) and air inlet/outlet.

If you will install the unit on the ground or on a concrete mounting platform, do the following:

1. Mark the positions for four expansion bolts based on dimensions chart.
2. Pre-drill holes for expansion bolts.
3. Place a nut on the end of each expansion bolt.
4. Hammer expansion bolts into the pre-drilled holes.
5. Remove the nuts from expansion bolts, and place outdoor unit on bolts.
6. Put washer on each expansion bolt, then replace the nuts.
7. Using a wrench, tighten each nut until snug.

⚠️ WHEN DRILLING INTO CONCRETE, EYE PROTECTION IS RECOMMENDED AT ALL TIMES.

If you will install the unit on a wall-mounted bracket, do the following:

? CAUTION Make sure that the wall is made of solid brick, concrete, or of similarly strong material. The wall must be able to support at least four times the weight of the unit.

1. Mark the position of bracket holes based on dimensions chart.
2. Pre-drill the holes for the expansion bolts.
3. Place a washer and nut on the end of each expansion bolt.
4. Thread expansion bolts through holes in mounting brackets, put mounting brackets in position, and hammer expansion bolts into the wall.
5. Check that the mounting brackets are level.
6. Carefully lift unit and place its mounting feet on brackets.
7. Bolt the unit firmly to the brackets.
8. If allowed, install the unit with rubber gaskets to reduce vibrations and noise.

Step 4: Connect signal and power cables

The outside unit's terminal block is protected by an electrical wiring cover on the side of the unit. A comprehensive wiring diagram is printed on the inside of the wiring cover.

⚠️ BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK, TURN OFF THE MAIN POWER TO THE SYSTEM.

1. Prepare the cable for connection:
   • USE THE RIGHT CABLE: Please choose the right cable refer to "Cable types" in page 25.
   • CHOOSE THE RIGHT CABLE SIZE: The size of the power supply cable, signal cable, fuse, and switch needed is determined by the maximum current of the unit. The maximum current is indicated on the nameplate located on the side panel of the unit. Note: In North America, please choose the right cable size according to the Minimum Circuit Ampacity indicated on the nameplate of the unit.
   • a. Using wire strippers, strip the rubber jacket from both ends of cable to reveal about 40mm (1.57in) of the wires inside.
   • b. Strip the insulation from the ends of the wires.
   • c. Using a wire crimper, crimp u-lugs on the ends of the wires.
   • PAY ATTENTION TO LIVE WIRE: While crimping wires, make sure you clearly distinguish the Live (“L”) Wire from other wires.

⚠️ ALL WIRING WORK MUST BE PERFORMED STRICTLY IN ACCORDANCE WITH THE WIRING DIAGRAM LOCATED INSIDE OF WIRE COVER OF THE OUTDOOR UNIT.

2. Unscrew the electrical wiring cover and remove it.
3. Unscrew the cable clamp below the terminal block and place it to the side.
4. Connect the wire according to the wiring diagram, and firmly screw the u-lug of each wire to its corresponding terminal.
5. After checking to make sure every connection is secure, loop the wires around to prevent rain water from flowing into the terminal.
6. Using the cable clamp, fasten the cable to the unit. Screw the cable clamp down tightly.
7. Insulate unused wires with PVC electrical tape. Arrange them so that they do not touch any electrical or metal parts.
8. Replace the wire cover on the front of the unit, and the plastic panel on the back.

Image: Diagram showing the wire cover, terminal block, cable clamp, and the correct way to select the through-hole for the wire diameter. Also shows a buckle for clamping.

In North America:

1. Remove the wire cover from the unit by loosening the 3 screws.
2. Dismount caps on the conduit panel.
3. Temporarily mount the conduit tubes (not included) on the conduit panel.
4. Properly connect both the power supply and low voltage lines to the corresponding terminals on the terminal block.
5. Ground the unit in accordance with local codes.
6. Be sure to size each wire allowing several inches longer than the required length for wiring.
7. Use lock nuts to secure the conduit tubes.

Refrigerant Piping Connection

When connecting refrigerant piping, do not let substances or gases other than the specified refrigerant enter the unit. The presence of other gases or substances will lower the unit's capacity, and can cause abnormally high pressure in the refrigeration cycle. This can cause explosion and injury.

Note on Pipe Length

The length of refrigerant piping will affect the performance and energy efficiency of the unit. Nominal efficiency is tested on units with a pipe length of 5 meters (16.5ft) (In North America, the standard pipe length is 7.5m (25'). A minimum pipe run of 3 metres is required to minimise vibration & excessive noise. In special tropical area, for the R290 refrigerant models, no refrigerant can be added and the maximum length of refrigerant pipe should not exceed 10 meters(32.8ft).

Refer to the table below for specifications on the maximum length and drop height of piping.

Connection Instructions – Refrigerant Piping

Step 1: Cut pipes

When preparing refrigerant pipes, take extra care to cut and flare them properly. This will ensure efficient operation and minimize the need for future maintenance.

1. Measure the distance between the indoor and outdoor units.
2. Using a pipe cutter, cut the pipe a little longer than the measured distance.
3. Make sure that the pipe is cut at a perfect 90° angle.

Image: Diagram showing correct (90°) and incorrect (oblique, rough, warped) pipe cutting.

DO NOT DEFORM PIPE WHILE CUTTING Be extra careful not to damage, dent, or deform the pipe while cutting. This will drastically reduce the heating efficiency of the unit.

Step 2: Remove burrs

Burrs can affect the air-tight seal of refrigerant piping connection. They must be completely removed.

1. Hold the pipe at a downward angle to prevent burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove all burrs from the cut section of the pipe.

Image: Diagram showing pipe and reamer.

Image: Diagram showing flare form and pipe extension 'A'.

Step 3: Flare pipe ends

Proper flaring is essential to achieve an airtight seal.

1. After removing burrs from cut pipe, seal the ends with PVC tape to prevent foreign materials from entering the pipe.
2. Sheath the pipe with insulating material.
3. Place flare nuts on both ends of pipe. Make sure they are facing in the right direction, because you can't put them on or change their direction after flaring.

Image: Diagram showing flare nut and copper pipe.

4. Remove PVC tape from ends of pipe when ready to perform flaring work.
5. Clamp flare form on the end of the pipe. The end of the pipe must extend beyond the edge of the flare form in accordance with the dimensions shown in the table below.
6. Place flaring tool onto the form.
7. Turn the handle of the flaring tool clockwise until the pipe is fully flared.
8. Remove the flaring tool and flare form, then inspect the end of the pipe for cracks and even flaring.

Step 4: Connect pipes

When connecting refrigerant pipes, be careful not to use excessive torque or to deform the piping in any way. You should first connect the low-pressure pipe, then the high-pressure pipe.

MINIMUM BEND RADIUS

When bending connective refrigerant piping, the minimum bending radius is 10cm.

Image: Diagram showing minimum bend radius.

Instructions for Connecting Piping to Indoor Unit

1. Align the center of the two pipes that you will connect.

Image: Diagram showing alignment of indoor unit tubing and pipe flare nut.

2. Tighten the flare nut as tightly as possible by hand.
3. Using a spanner, grip the nut on the unit tubing.
4. While firmly gripping the nut on the unit tubing, use a torque wrench to tighten the flare nut according to the torque values in the Torque Requirements table below. Loosen the flaring nut slightly, then tighten again.

DO NOT USE EXCESSIVE TORQUE Excessive force can break the nut or damage the refrigerant piping. You must not exceed torque requirements shown in the table above.

Instructions for Connecting Piping to Outdoor Unit

1. Unscrew the cover from the packed valve on the side of the outdoor unit.
2. Remove protective caps from ends of valves.
3. Align flared pipe end with each valve, and tighten the flare nut as tightly as possible by hand.
4. Using a spanner, grip the body of the valve. Do not grip the nut that seals the service valve.

USE SPANNER TO GRIP MAIN BODY OF VALVE Torque from tightening the flare nut can snap off other parts of valve.

5. While firmly gripping the body of the valve, use a torque wrench to tighten the flare nut according to the correct torque values.
6. Loosen the flaring nut slightly, then tighten again.
7. Repeat Steps 3 to 6 for the remaining pipe.

Air Evacuation

Preparations and Precautions

Air and foreign matter in the refrigerant circuit can cause abnormal rises in pressure, which can damage the air conditioner, reduce its efficiency, and cause injury. Use a vacuum pump and manifold gauge to evacuate the refrigerant circuit, removing any non-condensable gas and moisture from the system. Evacuation should be performed upon initial installation and when unit is relocated.

BEFORE PERFORMING EVACUATION

• Check to make sure the connective pipes between the indoor and outdoor units are connected properly.
• Check to make sure all wiring is connected properly.

Evacuation Instructions

1. Connect the charge hose of the manifold gauge to service port on the outdoor unit's low pressure valve.
2. Connect another charge hose from the manifold gauge to the vacuum pump.
3. Open the Low Pressure side of the manifold gauge. Keep the High Pressure side closed.
4. Turn on the vacuum pump to evacuate the system.
5. Run the vacuum for at least 15 minutes, or until the Compound Meter reads -76cmHG (-105Pa).

Image: Diagram showing the Manifold Gauge setup with vacuum pump, pressure hose, charge hose, low pressure valve, high pressure valve, and compound gauge.

8. If there is a change in system pressure, refer to Gas Leak Check section for information on how to check for leaks. If there is no change in system pressure, unscrew the cap from the packed valve (high pressure valve).
9. Insert hexagonal wrench into the packed valve (high pressure valve) and open the valve by turning the wrench in a 1/4 counterclockwise turn. Listen for gas to exit the system, then close the valve after 5 seconds.
10. Watch the Pressure Gauge for one minute to make sure that there is no change in pressure. The Pressure Gauge should read slightly higher than atmospheric pressure.
11. Remove the charge hose from the service port.

Image: Diagram showing valve body, valve stem, cap, and flare nut.

12. Using hexagonal wrench, fully open both the high pressure and low pressure valves.
13. Tighten valve caps on all three valves (service port, high pressure, low pressure) by hand. You may tighten it further using a torque wrench if needed.

OPEN VALVE STEMS GENTLY When opening valve stems, turn the hexagonal wrench until it hits against the stopper. Do not try to force the valve to open further.

6. Close the Low Pressure side of the manifold gauge, and turn off the vacuum pump.
7. Wait for 5 minutes, then check that there has been no change in system pressure.

Note on Adding Refrigerant

Some systems require additional charging depending on pipe lengths. The standard pipe length varies according to local regulations. For example, in North America, the standard pipe length is 7.5m (25'). In other areas, the standard pipe length is 5m (16'). The refrigerant should be charged from the service port on the outdoor unit's low pressure valve. The additional refrigerant to be charged can be calculated using the following formula:

For R290 refrigerant unit, the total amount of refrigerant to be charged is no more than: 387g(<=9000Btu/h), 447g(>9000Btu/h and <=12000Btu/h), 547g(>12000Btu/h and <=18000Btu/h), 632g(>18000Btu/h and <=24000Btu/h).

? CAUTION DO NOT mix refrigerant types.

Electrical and Gas Leak Checks

Before Test Run

Only perform test run after you have completed the following steps:

• Electrical Safety Checks – Confirm that the unit's electrical system is safe and operating properly
• Gas Leak Checks – Check all flare nut connections and confirm that the system is not leaking
• Confirm that gas and liquid (high and low pressure) valves are fully open

Electrical Safety Checks

After installation, confirm that all electrical wiring is installed in accordance with local and national regulations, and according to the Installation Manual.

BEFORE TEST RUN

⚠️ RISK OF ELECTRIC SHOCK. ALL WIRING MUST COMPLY WITH LOCAL AND NATIONAL ELECTRICAL CODES, AND MUST BE INSTALLED BY A LICENSED ELECTRICIAN.

Check Grounding Work

Measure grounding resistance by visual detection and with grounding resistance tester. Grounding resistance must be less than 0.1Ω.

Note: This may not be required for some locations in North America.

DURING TEST RUN

Check for Electrical Leakage

During the Test Run, use an electroprobe and multimeter to perform a comprehensive electrical leakage test. If electrical leakage is detected, turn off the unit immediately and call a licensed electrician to find and resolve the cause of the leakage.

Note: This may not be required for some locations in North America.

Gas Leak Checks

There are two different methods to check for gas leaks.

Soap and Water Method

Using a soft brush, apply soapy water or liquid detergent to all pipe connection points on the indoor unit and outdoor unit. The presence of bubbles indicates a leak.

Leak Detector Method

If using leak detector, refer to the device's operation manual for proper usage instructions.

AFTER PERFORMING GAS LEAK CHECKS

After confirming that the all pipe connection points DO NOT leak, replace the valve cover on the outside unit.

Image: Diagram showing check-points for indoor and outdoor units (A, B, C, D). A: Low pressure stop valve, B: High pressure stop valve, C & D: Indoor unit flare nuts.

Test Run

Test Run Instructions

You should perform the Test Run for at least 30 minutes.

1. Connect power to the unit.
2. Press the ON/OFF button on the remote controller to turn it on.
3. Press the MODE button to scroll through the following functions, one at a time:
   • COOL – Select lowest possible temperature
   • HEAT – Select highest possible temperature
4. Let each function run for 5 minutes, and perform the following checks:

DOUBLE-CHECK PIPE CONNECTIONS

During operation, the pressure of the refrigerant circuit will increase. This may reveal leaks that were not present during your initial leak check. Take time during the Test Run to double-check that all refrigerant pipe connection points do not have leaks. Refer to Gas Leak Check section for instructions.

5. After the Test Run is successfully completed, and you confirm that all checks points in List of Checks to Perform have PASSED, do the following:
   • Using remote control, return unit to normal operating temperature.
   • Using insulation tape, wrap the indoor refrigerant pipe connections that you left uncovered during the indoor unit installation process.

IF AMBIENT TEMPERATURE IS BELOW 17°C (62°F)

You can't use the remote controller to turn on the COOL function when the ambient temperature is below 16°C. In this instance, you can use the MANUAL CONTROL button to test the COOL function.

1. The MANUAL CONTROL button is located on the right-hand side panel of the unit.
2. Press the button 2 times to select the COOL function.
3. Perform Test Run as normal.

Image: Diagram showing the manual control button.

Packing and unpacking the unit

Instructions for packing and unpacking the unit:

Unpacking: Indoor unit:

1. Cut the sealing tape on the carton with a knife, one cut on the left, one cut in the middle and one cut on the right.
2. Use the vice to take out the sealing nails on the top of the carton.
3. Open the carton.
4. Take out the middle support plate if it is included.
5. Take out the accessory package, and take out the connecting wire if it is included.
6. Lift the machine out of the carton and lay it flat.
7. Remove the left and right package foam or the upper and lower packaging foam, untie the packaging bag.

Outdoor Unit

1. Cut the packing belt.
2. Take the unit out of the carton.
3. Remove the foam from the unit.
4. Remove the packaging bag from the unit.

Packing: Indoor unit:

1. Put the indoor unit into the packing bag.
2. Attach the left and right package foam or the upper and lower packaging foam to the unit.
3. Put the unit into the carton, then put accessory package in.
4. Close the carton and seal it with the tape.
5. Using the packing belt if necessary.

Outdoor unit:

1. Put the outdoor unit into the packing bag.
2. Put the bottom foam into the box.
3. Put the unit into the carton, then put the upper packaging foam on the unit.
4. Close the carton and seal it with the tape.
5. Using the packing belt if necessary.

Note: Please keep all packaging items if you may need in the future.

The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details. Any updates to the manual will be uploaded to the service website, please check for the latest version.

CS014UI-EP(B)
16122000009397
20210719