inventor LEUVI-24WFI Wall Mounted Unit Air Conditioning System User Manual

AIR CONDITIONING SYSTEMS
WALL MOUNTED UNIT
• USER’S & INSTALLATION MANUAL

MODELS:
LEUVI-09WFI/LEUVO-09
LEUVI-12WFI/LEUVO-12
LEUVI-18WFI/LEUVO-18
LEUVI-24WFI/LEUVO-24

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.

WARNINGS FOR PRODUCT INSTALLATION

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

2. 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.)

3. Contact an authorized service technician for repair or maintenance of this unit. This appliance shall be installed in accordance with national wiring regulations.

4. 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.

5. 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.

6. Install drainage piping according to the instructions in this manual. Improper drainage may cause water damage to your home and property.

7. For units that have an auxiliary electric heater, do not install the unit within 1 meter (3 feet) of any combustible materials.

8. 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.

9. Do not turn on the power until all work has been completed.

10. When moving or relocating the air conditioner, consult experienced service technicians for
    disconnection and reinstallation of the unit.

11. 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 leakdetection 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.

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

1. Do not operate UV-C lamps outside of the appliance.
2. Appliances that are obviously damaged must not be operated.
3. 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.
4. Before opening doors and access panels bearing the ULTRAVIOLET RADIATION hazard symbol for the conducting USER MAINTENANCE, it is recommended to disconnect the power.
5. The UV-C lamp cannot be cleaned, repaired and replaced.
6. 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.

Explanation of symbols displayed on the indoor unit or outdoor unit:

| WARNING| This symbol shows that this appliance used a flammable refrigerant. If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fire.
---|---|---
| CAUTION| This symbol shows that the operation manual should be read carefully.
| CAUTION| This symbol shows that a service personnel should be handling this equipment with reference to the installation manual.
| CAUTION
| CAUTION| This symbol shows that information is available such as the operating manual or installation manual.

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 specifiec for operation.
  For R32 fragrant models:
  Appliance shall be installed, operated and stored in a room with a floor area larger than 4m 2.
  Appliance shall not be installed in an unvertilated space, if that space is smaller than 4m2 .
  For R290 refrigerant models, the minimum room size needed:
  <=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 eletrical 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

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

| COOL mode| HEAT mode| DRY mode
---|---|---|---
Room Temperature| 17°C – 32°C
(62°F – 90°F)| 0°C – 30°C (32°F – 86°F)| 10°C – 32°C
(50°F – 90°F)
Outdoor Temperature| 0°C – 50°C (32°F – 122°F)| -15°C – 24°C (5°F – 75°F)| 0°C – 50°C (32°F -122°F)
-15°C – 50°C (5°F – 122°F)
(For models with low temp. cooling systems.)
0°C – 52°C (32°F – 126°F)
(For special tropical models)| 0°C – 52°C (32°F – 126°F)
(For special tropical models

FOR OUTDOOR UNITS WITH BASEPAN HEATER OR CRANKCASE HEATER
When outside temperature is below 0°C(32°F ), we strongly recommend keeping the unit plugged in at all time to ensure smooth ongoing performance.

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.

A guide on using the infrared remote is not included in this literature package. Not all the functions are available for the air conditioner, please check the indoor display and remote control of the unit you purchased.

Other Features

• Auto-Restart
  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
  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
  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
  This feature avoids direct air flow blowing on the body and make you feel indulging in silky coolness.

• Refrigerant Leakage Detection
  The indoor unit will automatically display “EL0C” when it detects refrigerant leakage.

• 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.

• 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.

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

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.

NOTE: Do not move louver by hand. This will cause the louver to become out of sync. If this occurs, turn off the unit and unplug it for a few seconds, then restart the unit. This will reset the louver.  Fig. A

CAUTION

Do not put your fingers in or near the blower and suction side of the unit. The high-speed fan inside the unit may cause injury.

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.

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.

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.

Maintenance – Long Periods of Non-Use
If you plan not to use your air conditioner for an extended period of time, do the following:

Maintenance – Pre-Season Inspection
After long periods of non-use, or before periods of frequent use, do the following:

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.

Unit does not turn on when pressing
ON/OFF button| The Unit has a 3-minute protection feature that prevents the unit from overloading. The unit cannot be restarted within three minutes of being turned off.
The unit changes from COOL/HEAT mode to FAN mode| The unit may change its setting to prevent frost from forming on the unit.
Once the temperature increases, the unit will start operating in the previously selected mode again.
The set temperature has been reached, at which point the unit turns off the compressor. The unit will continue operating when the temperature fluctuates again.
The indoor unit emits white mist| In humid regions, a large temperature difference between the room’s air and the conditioned air can cause white mist.
Both the indoor and outdoor units emit white mist| When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture generated from the defrosting process.
The indoor unit makes noises| A rushing air sound may occur when the louver resets its position.
A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the unit’s plastic  parts.
Both the indoor unit and outdoor unit make noises| Low hissing sound during operation: This is normal and is  caused by refrigerant gas flowing through both indoor and outdoor units.
Low hissing sound when the system starts, has just stopped running, or is defrosting: This noise is normal and is caused by the refrigerant gas stopping or changing direction.
Squeaking sound: Normal expansion and contraction of  plastic and metal parts caused by temperature changes during operation can cause squeaking noises.
The outdoor unit makes noises| The unit will make different sounds based on its current operating mode.
Dust is emitted from either the indoor or outdoor unit| The unit may accumulate dust during extended periods of non-use, which will be emitted when the unit is turned on. This can be mitigated by covering the unit during long periods of inactivity.
The unit emits a bad odor| The unit may absorb odors from the environment (such as furniture, cooking,
cigarettes, etc.) which will be emitted during operations.
The unit’s filters have become moldy and should be cleaned.
The fan of the outdoor unit does not operate| During operation, the fan speed is controlled to optimize product operation.
Operation is erratic, unpredictable, or
unit is unresponsive| Interference from cell phone towers and remote boosters may cause the unit to malfunction.
In this case, try the following:
• Disconnect the power, then reconnect.
• Press ON/OFF button on remote control to restart operation.

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.

heat exchanger
The air  lter is dirty| Remove the filter and clean it according to
instructions
The air inlet or outlet of either unit is blocked| Turn the unit off, remove the obstruction
and turn it back on
Doors and windows are open| Make sure that all doors and windows are
closed while operating the unit
Excessive heat is generated
by sunlight| Close windows and curtains during periods
of high heat or bright sunshine
Too many sources of heat in the room (people, computers, electronics, etc.)| Reduce amount of heat sources
Low refrigerant due to leak or long-term use| Check for leaks, re-seal if necessary and top off refrigerant
SILENCE function is activated
(optional function)| SILENCE function can lower product
performance by reducing operating
frequency. Turn off SILENCE function.
The unit is not working| Power failure| Wait for the power to be restored
The power is turned off| Turn on the power
The fuse is burned out| Replace the fuse
Remote control batteries are dead| Replace batteries
The Unit’s 3-minute protection
has been activated| Wait three minutes after restarting
the unit
Timer is activated| Turn timer off
The unit starts and stops frequently| There’s too much or too little
refrigerant in the system| Check for leaks and recharge the
system with refrigerant.
Incompressible gas or moisture
has entered the system.| Evacuate and recharge the system
with refrigerant
The compressor is broken| Replace the compressor
The voltage is too high or
too low| Install a manostat to regulate the
voltage
Poor heating performance| The outdoor temperature is
extremely low| Use auxiliary heating device
Cold air is entering through
doors and windows| Make sure that all doors  and
windows are closed during use
Low refrigerant due to leak or
long-term use| Check for leaks, re-seal if necessary
and top off refrigerant
Indicator lamps continue flashing| The unit may stop operation or continue to run safely. If the indicator lamps continue to flash or error codes appear, wait for about 10 minutes. The problem may resolve itself.
If not, disconnect the power, then connect it again. Turn the unit on.
If the problem persists, disconnect the power and contact your nearest customer service center.
Error code appears and begins with the letters as the following in the window display of indoor unit:
• E(x), P(x), F(x)
• EH(xx), EL(xx), EC(xx)
• PH(xx), PL(xx), PC(xx)

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.

Name of Accessories| Q’ty(pc)| Shape| Name of Accessories| Q’ty(pc)| Shape
---|---|---|---|---|---
Manual| 2-3| | Remote controller| 1|
Drain joint (for cooling & heating models)| 1| | Battery| 2|
Seal
for cooling &
(for
heating models)| 1| | Remote controller  holder(optional)| 1|
Mounting plate| 1| | Fixing screw for remote controller holder(optional)| 2|
Anchor| 5-8 (depending on models)| | Small Filter
(Need to be installed on the back of main air filter by the authorized technician while installing the machine)| 1-2 (depending on models)|
Mounting plate fixing screw| 5-8 (depending on models)|
Name| Shape| Quantity(PC)
---|---|---
Connecting pipe assembly| Liquid side| Φ6.35(1/4 in)| Parts you must purchase
separately. Consult the dealer about the proper pipe size of the unit you purchased.
Φ9.52(3/8in)
Gas side| Φ9.52(3/8in)
Φ12.7(1/2in)
Φ 16(5/8in)
Φ 19( 3/4in)
Magnetic ring and belt
(if supplied ,please refer to the wiring diagram to install it on the connective cable. )| | Varies by model

Installation Summary – Indoor Unit

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.

1. Wall Mounting Plate
2. Front Panel
3. Power Cable (Some Units)
4. Louver
5. Air filter(pull it out)
6. Drainage Pipe| 7. Refrigerant Piping
8. Signal Cable
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.
Refer to the following diagram to ensure proper distance from walls and ceiling:

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.
• 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.
   NOTE: When the gas side connective pipe is Φ 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.

Unit: mm(inch)

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

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.

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 installtion.

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 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.

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.

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.

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.

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.

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 facilitage 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.

|
---|---
CORRECT
Make sure there are no kinks or dent in drain hose to ensure
proper drainage.| NOT CORRECT
Kinks in the drain hose will create water traps.
|
NOT CORRECT
Kinks in the drain hose will create water traps.| NOT CORRECT
Do not place the end of the drain hose in water or in
containers that collect water.
This will prevent proper drainage.

PLUG THE UNUSED DRAIN HOLE
To prevent unwanted leaks you must plug the unused drain hole with the rubber plug provided.

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. Explain your reasoning to the client, and refuse to install the
   unit until the safety issue is properly resolved.

4. Power voltage should be within 90-110% of rated voltage. Insufficient power supply can cause malfunction, electrical shock, or fire.

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.

WARNING
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.
Minimum Cross-Sectional Area of Power and Signal Cables (For reference) (Not applicable for North America)

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

5. Feed the signal wire through this slot, from the back of the unit to the front.

6. 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.
   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
   First remove the knok-out panel to create a slot through whick 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: Wrappping 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:
   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.

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, 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 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.

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.

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.

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.

WARNING
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.

WARNING
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.
   WARNING
   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 side of the unit, and screw it in place.
   NOTE: If the cable clamp looks like the following, please select the appropriate through-hole according to the diameter of the wire.

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 species 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 meters is required to minimize 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.
Maximum Length and Drop Height of Refrigerant Piping per Unit Model

Model| Capacity (BTU/h)| Max. Length (m)| Max. Drop Height (m)
---|---|---|---
R410A,R32 Inverter Split Air Conditioner| < 15,000| 25 (82ft)| 10 (33ft)
≥ 15,000 and < 24,000| 30 (98.5ft)| 20 (66ft)
≥ 24,000 and < 36,000| 50 (164ft)| 25 (82ft)
R22 Fixed-speed Split Air Conditioner| < 18,000| 10 (33ft)| 5 (16ft)
≥ 18,000 and < 21,000| 15 (49ft)| 8(26ft)
≥ 21,000 and < 35,000| 20 (66ft)| 10(33ft)
R410A, R32 Fixed-speed Split Air Conditioner| < 18,000| 20 (66ft)| 8(26ft)
≥ 18,000 and < 36,000| 25 (82ft)| 10(33ft)

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.

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.

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 are 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 airing.
4. Remove PVC tape from ends of pipe when ready to perform arcing work.
5. Clamp are form on the end of the pipe.
   The end of the pipe must extend beyond the edge of the are form in accordance with the dimensions shown in the table below.

PIPING EXTENSION BEYOND FLARE FORM

6. Place airing tool onto the form.
7. Tur n the handle of the airing tool clockwise until the pipe is fully arid.
8. Remove the airing tool and are form, then inspect the end of the pipe for cracks and even airing.

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.

Instructions for Connecting Piping to Indoor Unit

1. Align the center of the two pipes that you will connect.
2. Tighten the are nut as tightly as possible by hand.
3. Using a spanner, grip the nut on the unit tubing.
4. While rely gripping the nut on the unit tubing, use a torque wrench to tighten the are nut according to the torque values in the  Torque Requirements table below. Loosen the airing nut slightly, then tighten again.

TORQUE REQUIREMENTS

Outer Diameter of Pipe  (mm)| Tightening Torque  (Nm)| Flare dimension(B)  (mm)| Flare shape
---|---|---|---
Ø 6.35 (Ø 0.25”)| 18~20(180~200kgf.cm)| 8.4~8.7 (0.33~0.34”)|
Ø 9.52 (Ø 0.375”)| 32~39(320~390kgf.cm)| 13.2~13.5 (0.52~0.53”)
Ø 12.7 (Ø 0.5”)| 49~59(490~590kgf.cm)| 16.2~16.5 (0.64~0.65”)
Ø 16 (Ø 0.63”)| 57~71(570~710kgf.cm)| 19.2~19.7 (0.76~0.78”)
Ø 19 ( Ø 0.75”)| 67~101(670~1010kgf.cm)| 23.2~23.7 (0.91~0.93”)

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 aired pipe end with each valve, and tighten the are 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.

5.  While rely gripping the body of the valve, use a torque wrench to tighten the are nut according to the correct torque values.

6. Loosen the airing nut slightly, then tighten again.

7. Repeat Steps 3 to 6 for the remaining pipe.

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

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 (-10 Pa).
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.
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). om the system.
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.
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.

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:

ADDITIONAL REFRIGERANT PER PIPE LENGTH

R32:
(Pipe length – standard length) x 12g/m
(Pipe length – standard length) x 0.13oZ/ft
R290:
(Pipe length – standard length) x 10g/m
(Pipe length – standard length) x 0.10oZ/ft
R410A:
(Pipe length – standard length) x 15g/m
(Pipe length – standard length) x 0.16oZ/ft
R22:
(Pipe length – standard length) x 20g/m
(Pipe length – standard length) x 0.21oZ/ft| Liquid Side: Ø 9.52 (ø 0.375”)
R32:
(Pipe length – standard length) x 24g/m
(Pipe length – standard length) x 0.26oZ/ft
R290:
(Pipe length – standard length) x 18g/m
(Pipe length – standard length) x 0.19oZ/ft
R410A:
(Pipe length – standard length) x 30g/m
(Pipe length – standard length) x 0.32oZ/ft
R22:
(Pipe length – standard length) x 40g/m
(Pipe length – standard length) x 0.42oZ/ft

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
Check Grounding Work
Measure grounding resistance by visual detection and with grounding resistance tester. Grounding resistance must be less than 0.1.
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 electro probe 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.

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

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 corn that all checks points in List of Checks to Perform have PASSED, do the following:
a. Using remote control, return unit to normal operating temperature.
b. 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 17°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.

All the pictures in the manual are for explanatory purposes only. The actual shape of the unit you purchased may be slightly different, but the operations and functions are the same.
The company may not be held responsible for any misprinted information. The design and the specifications of the product for reasons, such as product improvement, are  subject to change without any prior notice.
Please consult with the manufacturer at +30 211 300 3300 or with the Local Distributor for further details.

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Activate your Warranty

Follow the next quick steps to activate your warranty:

STEP 1
Visit our website via the link: https://www.inventorairconditioner.com /warranty-inventor or by scanning the QR code, as follows:

https://www.inventorairconditioner.com/warranty-inventor

STEP 2
Fill in the obligatory fields as requested in the “Owner’s details” and “Unit’s details”:

STEP 3
Click SEND button at the end of the submission form: STEP 4
Wait for the confirmation email you will receive at the email address you have filled in – please also check your spam folder.

STEP 5
Inventor warranty is now valid!

AIR CONDITIONING SYSTEMS
WALL MOUNTED UNIT
V:1.0.012023
Please check the applicable models, F-GAS and manufacturer information
from the “Owner’s Manual – Product Fiche” in the packaging of the outdoor unit. (European Union products only).
Manufacturer: INVENTOR A.G. S.A.
24th km National Road Athens – Lamia & 2 Thoukididou Str., Ag.Stefanos, 14565
Tel.: +30 211 300 3300, Fax: +30 211 300 3333 – www.inventor.ac.

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