Infinity Living Multi-Zone Condenser Installation & Owner's Manual

Important Note

This manual contains instructions of how to install the multi-zone condenser. It is designed to be used in conjunction with the included air handler manual. For detailed instruction of how to connect the DIYCOOL pre-charged line set to the condenser and air handler, please refer to the air handler manual.

Safety Precautions

⚠️ 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.

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.

General Safety Warnings

• This appliance can be used by children aged 8 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.
• 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 (Cleaning & Maintenance)

• 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.

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: T20A/250VAC (for <24000Btu/h unit), T30A/250VAC (for >24000Btu/h unit).

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

Warnings for Product Installation

⚠️ WARNING Installation must be performed by an authorized dealer or specialist. Defective installation can cause water leakage, electrical shock, or fire.

⚠️ WARNING 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)

1. 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).
2. Installation, service, maintenance and repair of this unit must be performed by a certified technician.
3. Product uninstallation and recycling must be performed by a certified technician.
4. 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.
5. When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.

⚠️ WARNING for Using R32 Refrigerant

• When flammable refrigerants are utilized, 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 X m². Appliance shall not be installed in an unventilated space, if that space is smaller than X m². (Please see the following form).

Specifications for Refrigerant and Room Size

The following table provides specifications for refrigerant charge and minimum room area based on installation height.

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 electronic 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 a 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 Parts and Major Functions

Unit Parts

(A) Wall-mounted type

Diagram Description: A diagram shows a typical multi-zone setup with one outdoor unit connected to multiple indoor units (labeled "One-twin", "One-three", "One-four", "One-five"). The outdoor unit is shown with its components, and the indoor units are depicted as wall-mounted units. Air inlet and outlet are indicated.

Indoor unit components:

1. Panel frame
2. Rear air intake grille
3. Front panel
4. Air purifying filter & Air filter (behind)
5. Horizontal louver
6. LCD display window
7. Vertical louver
8. Manual control button (behind)
9. Remote controller holder

Outdoor unit components:

10. Drain hose, refrigerant connecting pipe
11. Connective cable
12. Stop valve
13. Fan hood

Operating Conditions

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.

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.

Features

Protection of the air conditioner

Compressor protection

• The compressor cannot restart for 3 minutes after it stops.

Anti-cold air (Cooling and heating models only)

• The unit is designed not to blow cold air on HEAT mode, when the indoor heat exchanger is in one of the following three situations and the set temperature has not been reached:
  • A) When heating has just started.
  • B) During defrosting.
  • C) Low temperature heating.
• The indoor or outdoor fan stop running when defrosting (Cooling and heating models only).

Defrosting (Cooling and heating models only)

• Frost may be generated on the outdoor unit during a heat cycle when outdoor temperature is low and humidity is high resulting in lower heating efficiency in the air conditioner.
• Under these conditions, the air conditioner will stop heating operations and start defrosting automatically.
• The time to defrost may vary from 4 to 10 minutes, depending the outdoor temperature and the amount of frost buildup on the outdoor unit.

Auto-Restart (some models)

• In case of power failure, the system will immediately stop. When power returns, the Operation light on the indoor unit will flash. To restart the unit, press the ON/OFF button on the remote control. If the system has an auto restart function, the unit will restart using the same settings.

White mist emerging from the indoor unit

• A white mist may be generated due to a large temperature difference between air inlet and air outlet on COOL mode in places with high relative humidity.
• A white mist may be generated due to moisture created in the defrosting process when the air conditioner restarts in HEAT mode operation after defrosting.

Noise coming from the air conditioner

• You may hear a low hissing sound when the compressor is running or has just stopped running. This sound is the sound of the refrigerant flowing or coming to a stop.
• You may also hear a low "squeaking" sound when the compressor is running or has just stopped running. This is caused by tempera heat expansion and cold contraction of the plastic parts in the unit when the temperature is changing.
• A noise may be heard due to the louver restoring itself to its original position when power is first turned on.

Dust blowing out from the indoor unit.

This is happens when the air conditioner has not been used for a long time or during its first use.

Smell emitting from the indoor unit.

This is caused by the indoor unit giving off smells permeated from building materials, furniture, or smoke.

Manual Operations And Maintenance

Operation mode selection

While two or more indoor units are simultaneously operating, make sure the modes do not conflict with each other. The heat mode claims precedence over all other modes. If the unit intially started to operate in HEAT mode, the other units can operate in HEAT mode only. For example: If the unit intially started operates under COOL (or FAN) mode, the other units can operate under any mode except HEAT. If one of the unit selects HEAT mode, the other operating units will stop operation and diplay "--" (for units with display window only) or the auto and operation indication light will flash rapidly, the defrost indication light will turn off, and the timer indication light will remain on (for units without a display window). Alternatively, the defrost and alarm indication light (if applicable) wil light up, or the operation indication light will flash rapidly, and the timer indication light will turn off (for the floor and standing type).

Maintenance

If you plan to leave the unit idle for a long time, perform the following tasks:

1. Clean the indoor unit and air filter.
2. Select FAN ONLY mode and let the indoor fan run for a time to dry the inside of the unit.
3. Disconnect the power supply and remove the battery from the remote control.
4. Check components of the outdoor unit periodically. Contact a local dealer or a customer service centre if the unit requires servicing.

NOTE: Before you clean the air conditioner, be sure to switch off the unit and disconnect the power supply plug.

Optimal operation

To achieve optimal performance, please note the following:

• Adjust the direction of the air flow so that it is not blowing directly on people.
• Adjust the temperature to achieve the highest possible level of comfort. Do not adjust the unit to excessive temperature levels.
• Close doors and windows in COOL mode or HEAT mode.
• Use the TIMER ON button on the remote controller to select a time you want to start your air conditioner.
• Do not place any object near the air inlet or air outlet, as the efficiency of the air conditioner may be reduced and the air conditioner may stop running.
• Clean the air filter periodically, otherwise cooling or heating performance may be reduced.
• Do not operate unit with horizontal louvre in closed position.

Suggestion:

For units that feature an electric heater, when the outside ambient temperature is below 0°C (32°F), it is strongly recommended that you to keep the machine plugged in so as to guarantee smooth operation.

When the air conditioner is to be used again:

• Use a dry cloth to wipe off the dust accumulated on the rear air intake grille in order to avoid the dust being dispersed from the indoor unit.
• Check that the wiring is not broken off or disconnected.
• Check that the air filter is installed.
• Check if the air outlet or inlet is blocked after the air conditioner has not been used for a long time.

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.

Troubleshooting Tips

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

Accessories

The mini split system comes with the following accessories. Use all of the installation parts and accessories to install the mini split. 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.

Optional accessories

There are two types of remote controls: wired and wireless. Select a remote controller based on customer preferences and requirements and install in an appropriate place. Refer to catalogues and technical literature for guidance on selecting a suitable remote controller.

Installation Summary

INSTALLATION ORDER

Diagram Description: A five-step visual guide to the installation process. Step 1 shows the outdoor unit being placed. Step 2 shows connecting refrigerant pipes using tools. Step 3 shows connecting electrical wires to a terminal block. Step 4 shows a manifold gauge connected for evacuation. Step 5 shows a test run being performed.

1. Install the outdoor unit.
2. Connect the refrigerant pipes.
3. Connect the wires.
4. Evacuate the refrigeration system.
5. Perform a test run.

Installation Diagram

Diagram Description: This diagram illustrates the multi-zone system installation, showing the placement of indoor units (labeled One-Two, One-Three, One-Four, One-Five) relative to the outdoor unit. It details required clearances around indoor units (e.g., >12cm, >30cm) and the outdoor unit (e.g., 60cm above, 30cm front/back/side). It also indicates the air outlet direction and the placement of installation plates, drain pipes, and remote controller holders. Specific notes mention using a stud finder for wall mounting, minimum pipe run requirements (10'/3m) for vibration reduction, and ensuring air circulation pathways are clear. It also states that actual unit shapes may vary and copper lines must be independently insulated.

Safety Precautions

⚠️ CAUTION

• To prevent wall damage, use a stud finder to locate studs.
• A minimum pipe run of 10' (3m) is required to minimize vibration & excessive noise.
• Two of the A, B, and C air circulation pathways must be free from obstructions at all times.
• This illustration is for demonstration purposes only. The actual shape of your air conditioner may be slightly different.
• Copper lines must be independently insulated.

NOTE: The installation must be performed in accordance with the requirements of local and national standards. The installation may vary in different regions.

Specifications

Unit: m/ft.

NOTE: The Max. length for one indoor unit with Quick connector is 50' (15m).

Diagram Description: A diagram illustrates the pipe length and height difference specifications for a multi-zone system. It shows one outdoor unit connected to multiple indoor units, with lines indicating maximum pipe lengths (e.g., 10m/32.8ft, 15m/49ft) and maximum height differences between units.

Outdoor Unit Installation

Installation Instructions – Outdoor unit

Step 1: Select installation location

Install the unit by following local codes and regulations.

Diagram Description: A diagram shows the outdoor unit with required clearance dimensions indicated: 30cm (12in) on left and right, 60cm (24in) above, 200cm (79in) in front, and 30cm (12in) from the back wall.

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, raise the unit above the base pad to prevent ice buildup and coil damage. Mount the unit high enough to be above the average accumulated area snowfall. The minimum height must be 18 inches.

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 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.

Diagram Description: Two diagrams illustrate wind protection. One shows an outdoor unit with the fan facing perpendicular to strong wind, with a suggested wind baffle. The other shows a unit protected by a shelter from rain or snow.

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.

Outdoor Unit Installation

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: 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):

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):

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.

Diagram Description: Two diagrams illustrate drain joint installation. Figure A shows a drain joint with a rubber seal being fitted and inserted into the base pan. Figure B shows a drain joint without a seal being inserted.

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.

Diagram Description: A diagram shows a "Split Type Outdoor Unit" with dimensions labeled W (width), H (height), D (depth), and A, B (mounting hole distances). A table lists various outdoor unit dimensions (WxHxD) and corresponding mounting dimensions (Distance A, Distance B).

Rows of series installation

The relations between H, A and L are as follows.

Notes On Drilling Hole In Wall

You must drill a hole in the wall for the refrigerant piping, and the signal cable that will connect the indoor and outdoor units.

1. Determine the location of the wall hole based on the location of the outdoor unit.
2. Using a 2.5" (65mm) core drill, drill a hole in the wall.
3. NOTE: When drilling the wall hole, make sure to avoid wires, plumbing, and other sensitive components.
4. Place the protective wall cuff in the hole. This protects the edges of the hole and helps seal it when you finish the installation process.

When Select a 24K Indoor Unit

The 24K indoor unit can only be connected with an A system. If there are two 24K indoor units, they can be connected with A and B systems.

Connective pipe size of an A and B system

Refrigerant Piping Connection

NOTE: For quick-connect models, please refer to the internal machine manual for the installation method of the connecting pipe. The external machine manual does not repeat the instructions.

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.

Connection Instructions – Refrigerant Piping

⚠️ CAUTION

• The branching pipe must be installed horizontally. An angle of more than 10° may cause malfunction.
• DO NOT install the connecting pipe until both indoor and outdoor units have been installed.
• Insulate both the gas and liquid piping to prevent water leakage.

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.

Diagram Description: Three pipe ends are shown: one perfectly 90°, one oblique, and one rough. The 90° cut is marked with a checkmark (✔️), while the others are marked with crosses (❌).

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.

Diagram Description: A diagram shows a pipe end being reamed. A "Point down" arrow indicates the direction to hold the pipe. A reamer tool is shown.

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.

Diagram Description: A diagram shows a flare nut being placed onto a pipe end, with an arrow indicating the correct direction. Another diagram shows an indoor unit tubing connected to a flare nut and 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 flare form.

Diagram Description: A diagram shows a flare form clamped onto a pipe end, with the pipe extending slightly beyond the form.

6. Place flaring tool onto the form.

7. Turn the handle of the flaring tool clockwise until the pipe is fully flared. Flare the pipe in accordance with the dimensions.

Diagram Description: A table titled "PIPING EXTENSION BEYOND FLARE FORM" lists pipe gauge, tightening torque, and flare dimension (A) Min./Max. for various sizes (Ø 6.4 to Ø 22). It also shows a diagram illustrating the flare shape.

8. Remove the flaring tool and flare form, then inspect the end of the pipe for cracks and even flaring.

Step 4: Connect pipes

Connect the copper pipes to the indoor unit first, then connect it to the outdoor unit. You should first connect the low-pressure pipe, then the high-pressure pipe.

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

⚠️ CAUTION Ensure to wrap insulation around the piping. Direct contact with the bare piping may result in burns or frostbite. Make sure the pipe is properly connected. Over tightening may damage the bell mouth and under tightening may lead to leakage.

Refrigerant Piping Connection

NOTE ON MINIMUM BEND RADIUS Carefully bend the tubing in the middle according to the diagram below. DO NOT bend the tubing more than 90° or more than 3 times.

Diagram Description: A diagram shows how to bend a pipe using a thumb, indicating a minimum bend radius of 3.9" (10cm).

6. After connecting the copper pipes to the indoor unit, wrap the power cable, signal cable and the piping together with binding tape.

NOTE: 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.

7. Thread this pipeline through the wall and connect it to the outdoor unit.

8. Insulate all the piping, including the valves of the outdoor unit.

9. Open the stop valves of the outdoor unit to start the flow of the refrigerant between the indoor and outdoor unit.

⚠️ CAUTION Check to make sure there is no refrigerant leak after completing the installation work. If there is a refrigerant leak, ventilate the area immediately and evacuate the system (refer to the Air Evacuation section of this manual).

Wiring

BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE REGULATIONS

1. All wiring must comply with local and national electrical codes, regulations and must be installed by a licensed electrician.
2. All electrical connections must be made according to the Electrical Connection Diagram located on the panels of the indoor and outdoor units.
3. If there is a serious safety issue with the power supply, stop work immediately.
4. Power voltage should be within 90-110% of rated voltage. Insufficient power supply can cause malfunction, electrical shock, or re.
5. If connecting power to fixed wiring, a surge protector and main power switch should be installed.
6. 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.
7. Only connect the unit to an individual branch circuit outlet. Do not connect another appliance to that outlet.
8. Make sure to properly ground the air conditioner.
9. Every wire must be firmly connected. Loose wiring can cause the terminal to overheat, resulting in product malfunction and possible fire.
10. Do not let wires touch or rest against refrigerant tubing, the compressor, or any moving parts within the unit.
11. If the unit has an auxiliary electric heater, it must be installed at least 1 meter (40in) away from any combustible materials.
12. 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.
13. Make sure that you do not cross your electrical wiring with your signal wiring. This may cause distortion and interference.
14. No other equipment should be connected to the same power circuit.
15. Connect the outdoor wires before connecting the indoor wires.

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

NOTE ON AIR SWITCH

When the maximum current of the air conditioner is more than 16A, an air switch or leakage protection switch with protective device shall be used (purchased separately).

When the maximum current of the air conditioner is less than 16A, the power cord of air conditioner shall be equipped with plug (purchased separately).

In North America, the appliance should be wired according to NEC and CEC requirements.

Diagram Description: Diagram (A) shows a basic wiring setup with an air switch, outdoor unit power wires, and indoor & outdoor connective wires connecting an outdoor unit to an indoor unit.

(B)

Diagram Description: Diagram (B) illustrates cable preparation and connection. It includes a table for "Minimum Cross-Sectional Area of Power and Signal Cables" based on appliance rated current, and notes on choosing the right cable size and preparing the cable ends.

1. Prepare the cable for connection

a. You must first choose the right cable size. Be sure to use H07RN-F cables.

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

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. Refer to this nameplate to choose the right cable, fuse, or switch.

NOTE: Please choose the right cable size according to the Minimum Circuit Ampacity indicated on the nameplate of the unit.

b. Using wire strippers, strip the rubber jacket from both ends of the signal cable to reveal approximately 5.9" (15cm) of wire.

c. Strip the insulation from the ends.

d. Using a wire crimper, crimp u-lugs on the ends.

NOTE: When connecting the wires, strictly follow the wiring diagram found inside the electrical box cover.

2. Remove the electric cover of the outdoor unit. If there is no cover on the outdoor unit, take o the bolts from the maintenance board and remove the protection board.

Diagram Description: A diagram shows the outdoor unit with the cover removed, indicating screws and the maintenance board.

(C) and (D)

Diagram Description: Diagrams (C) and (D) show further wiring configurations, including connections for multiple indoor units and specific notes for North American installations.

Wiring Figure

⚠️ CAUTION Connect the connective cables to the terminals, as identified, with their matching numbers on the terminal block of the indoor and outdoor units. For example, in the US models shown in the following diagram, Terminal L1(A) of the outdoor unit must connect with terminal L1 on the indoor unit.

Diagram Description: Two wiring diagrams are shown, one marked with a checkmark (✔️) and labeled "Correct", and another marked with a cross (❌) and labeled "Incorrect wiring". These diagrams illustrate the terminal connections between outdoor and indoor units, showing proper and improper wiring sequences and labels (L1, L2, S, TO A, TO B).

NOTE: Refer to the following figures if end-users wish to perform their own wiring. Run the main power cord through the lower line-outlet of the cord clamp. ---- This symbol indicates field wiring.

Diagram Description: A series of detailed wiring diagrams (Models A through M for One-two models, Models A through I for One-three models, Models A through J for One-four models, and Models A through K for One-five models) are presented. These diagrams illustrate various connection configurations for multiple indoor units to a single outdoor unit, showing terminal block layouts and connections.

⚠️ CAUTION After confirmation of the above conditions, follow these guidelines when performing wiring:

• Always have an individual power circuit specifically for the air conditioner. Always follow the circuit diagram posted on the inside of the control cover.
• Screws fastening the wiring in the casing of electrical fittings may come loose during transportation. Because loose screws may cause wire burn-out, check that the screws are tightly fastened.
• Check the specifications for the power source.
• Confirm that electrical capacity is sufficient.
• Confirm that starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate.
• Always install a grounding circuit in wet or moist areas.
• The following can be caused by a drop in voltage: vibration of a magnetic switch, damaging the contact point, broken fuses, and disturbance of normal functioning.
• Disconnection from a power supply must be incorporated into the fixed wiring. It must have an air gap contact separation of at least 3mm in each active (phase) conductors.
• Before accessing terminals, all supply circuits must be disconnected.

NOTE: To satisfy the EMC compulsory regulations, which is required by the international standard CISPR 14-1:2005/A2:2011 in specific countries or districts, please make sure you apply the correct magnetic rings on your equipment according to the wiring diagram that adhere to the your equipment. Please contact your distributor or installer to get further information and purchase magnetic rings (The supplier of magnetic ring is TDK (model ZCAT3035-1330) or similar).

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 if the 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

Before using a manifold gauge and a vacuum pump, read their operation manuals to make sure you know how to use them properly.

Diagram Description: A diagram shows the setup for air evacuation, including a manifold gauge with compound gauge, low pressure valve, high pressure valve, charge hose, and a vacuum pump connected to the outdoor unit's service port.

1. Connect the manifold gauge's charge hose to the service port on the outdoor unit's low pressure valve.
2. Connect the manifold gauge's charge hose 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 (-1x105Pa).
6. Close the manifold gauge's Low Pressure valve and turn o the vacuum pump.
7. Wait for 5 minutes, then check that there has been no change in system pressure.

NOTE: If there is no change in system pressure, unscrew the cap from the packed valve (high pressure valve). If there is a change in system pressure, there may be a gas leak.

8. Insert hexagonal wrench into the packed valve (high pressure valve) and open the valve by turning it a quarter turn counterclockwise. Listen for gas to exit the system, then close the valve after 5 seconds.

Diagram Description: A diagram shows a packed valve with a cap, valve stem, and flare nut. It illustrates inserting a hexagonal wrench to open the valve.

9. Watch the Pressure Gauge for one minute to make sure that there is no change in pressure. It should read slightly higher than the atmospheric pressure.

10. Remove the charge hose from the service port.

11. Using hexagonal wrench, fully open both the high pressure and low pressure valves.

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.

12. Tighten valve caps by hand, then tighten it using the proper tool.

Note On Adding Refrigerant

⚠️ CAUTION

• Refrigerant charging must be performed after wiring, vacuuming, and the leak testing.
• DO NOT exceed the maximum allowable quantity of refrigerant or overcharge the system. Doing so can damage the unit or impact it's functioning.
• Charging with unsuitable substances may cause explosions or accidents. Ensure that the appropriate refrigerant is used.
• Refrigerant containers must be opened slowly. Always use protective gear when charging the system.
• DO NOT mix refrigerants types.
• For the R290 or R32 refrigerant model, make sure the conditions within the area have been made safe by control of flammable material when the refrigerant added into air conditioner.

N=2(one-two models), N=3(one-three models), N=4(one-four models), N=5(one-five models). Depending on the length of connective piping or the pressure of the evacuated system, you made need to add refrigerant. Refer to table below for refrigerant amounts to be added:

NOTE: The standard pipe length is 25' (7.5m).

Safety And Leakage Check

Electrical safety check

Perform the electrical safety check after completing installation. Cover the following areas:

1. Insulated resistance: The insulated resistance must be more than 2MΩ.
2. Grounding work: After finishing grounding work, measure the grounding resistance by visual detection and using the grounding resistance tester. Make sure the grounding resistance is less than 4Ω.
3. Electrical leakage check (performing during test while unit is on): During a test operation after completed installation, the use the electroprobe and multimeter to perform an electrical leakage check. Turn off the unit immediately if leakage happens. Try and evaluate different solutions until the unit operates properly.

Gas leak check

1. Soap water method: Apply a soap-water solution or a liquid neutral detergent on the indoor unit connection or outdoor unit connections with a soft brush to check for leakage of the connecting points of the piping. If bubbles emerge, the pipes are experiencing leakage.
2. Leak detector: Use the leak detector to check for leakage.

NOTE: The illustration is for example purposes only. The actual order of A, B, C, D, and E on the machine may be slightly different from the unit you purchased but the general shape will remain the same.

Diagram Description: A diagram shows check points on the indoor and outdoor units for safety and leakage checks. Points A, B, C, D are indicated for one-four type units, and A, B, C, D, E for one-five type units.

Test Run

Before Test Run

A test run must be performed after the entire system has been completely installed. Confirm the following points before performing the test:

• a) The indoor and outdoor units are properly installed.
• b) Piping and wiring are properly connected.
• c) No obstacles near the inlet and outlet of the unit that might cause poor performance or product malfunction.
• d) The refrigeration system does not leak.
• e) Drainage system is unimpeded and draining to a safe location.
• f) The heating insulation is properly installed.
• g) The grounding wires are properly connected.
• h) Length of the piping and additional refrigerant stow capacity have been recorded.
• i) The power voltage is the correct voltage for the air conditioner.

⚠️ CAUTION Failure to perform the test run may result in unit damage, property damage or personal injury.

Test Run Instructions

1. Open both the liquid and gas stop valves.
2. Turn on the main power switch and allow the unit to warm up.
3. Set the air conditioner to COOL mode.
4. For the Indoor Unit:
   • a. Ensure the remote control and its buttons work properly.
   • b. Ensure the louvers move properly and can be changed using the remote control.
   • c. Double check to see if the room temperature is being registered correctly.
   • d. Ensure the indicators on the remote control and the display panel on the indoor unit work properly.
   • e. Ensure the manual buttons on the indoor unit works properly.
   • f. Check to see that the drainage system is unimpeded and draining smoothly.
   • g. Ensure there is no vibration or abnormal noise during operation.
5. For the Outdoor Unit:
   • a. Check to see if the refrigeration system is leaking.
   • b. Make sure there is no vibration or abnormal noise during operation.
   • c. Ensure the wind, noise, and water generated by the unit do not disturb your neighbors or pose a safety hazard.

NOTE: If the unit malfunctions or does not operate according to your expectations, please refer to the Troubleshooting section of the Owner's Manual before calling customer service.

Function of Automatic Wiring/Piping Correction

Automatic Wiring/Piping Correction Function

More recent models now feature automatic correction of wiring/piping errors. Press the "check switch" on the outdoor unit PCB board for 5 seconds until the LED displays "CE”, indicating that this function is working. Approximately 5-10 minutes after the switch is pressed, the "CE" disappears, meaning that the wiring/piping error is corrected and all wiring/piping is properly connected.

Diagram Description: A diagram shows the outdoor unit's PCB board with a "Check switch" and an "LED display". It then illustrates three scenarios: "Correct" wiring, "Incorrect wiring" (two variations), showing connections between the outdoor unit and indoor units A and B via terminal blocks and pipes.

How To Activate This Function

1. Check that outside temperature is above 5 °C. (This function does not work when outside temperature is not above 5 °C)
2. Check that the stop valves of the liquid pipe and gas pipe are open.
3. Turn on the breaker and wait at least 2 minutes.
4. Press the check switch on the outdoor PCB board unit LED display "CE".

Final Notes

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.