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CONVECTAIR LEGATO Hyper Heat Series Installation And User Manual

Split-type room air conditioner
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INSTALLATION AND USER'S GUIDE
To be read and kept by the user.
LEGATO
Split-Type
Room Air Conditioner
7217030100R00

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Summary of Contents for CONVECTAIR LEGATO Hyper Heat Series

  • Page 1 LEGATO Split-Type Room Air Conditioner We value your feedback! Your input helps to create even better products and experiences. Share the warmth and leave a review. convectair.com/sharethewarmth INSTALLATION AND USER’S GUIDE To be read and kept by the user. 7217030100R00...

  • Page 3: Table Of Contents

    Operation Instructions Important Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Get to Know Your AC .

  • Page 4: Important Instructions

    Important Instructions When using electrical appliances, basic precautions should always be followed to reduce the risk of fire, electric shock and injury to person, including the following: THESE INSTRUCTIONS SHOULD BE READ CAREFULLY AND RETAINED FOR FUTURE REFERENCE . Note also the information presented on the appliance . It is really important that you read Safety Precautions Before Operation and Installation .

  • Page 5: Electrical Warnings

    Important Instructions ELECTRICAL WARNINGS • Only use the specified wire . If the wire is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard . • The product must be properly grounded at the time of installation, or electric shock may occur . •...
  • Page 6 Important Instructions WARNING FOR USING FLAMMABLE REFRIGERANTS • Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer . • The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater) .
  • Page 7 Important Instructions For the units with refrigerant sensors, when the unit detects a refrigerant leak, the minimum airflow of the indoor unit is as follows: Hyper Heat Series Model Model Indoor unit Indoor unit Outdoor unit Outdoor unit Indoor nominal air volume Indoor nominal air volume 500004479 500004479...
  • Page 8 Important Instructions 1. Installation(where refrigerant pipes are allowed) - Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance with an industry recognized assessment specification .

  • Page 9: Information Servicing

    Important Instructions c . During the evacuation test, after achieving a vacuum level specified in the manual or less, the refrigeration system shall be isolated from the vacuum pump and the pressure shall not rise above 1500 microns within 10 min . The vacuum pressure level shall be specified in the manual, and shall be the lessor of 500 microns or the value required for compliance with national and local codes and standards, which may vary between residential, commercial,and industrial buildings .
  • Page 10 Important Instructions 6. Checks to the area No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion .
  • Page 11 Important Instructions 12. Cabling Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects . The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans . 13.
  • Page 12 Important Instructions 15. Charging procedures In addition to conventional charging procedures, the following requirements shall be followed: • Works shall be undertaken with appropriate tools only (In case of uncertainty, please consult the manufacturer of the tools for use with flammable refrigerants) •...
  • Page 13 Important Instructions 18. Recovery When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely . When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed . Ensure that the correct number of cylinders for holding the total system charge is available .

  • Page 14: Get To Know Your Ac

    Get to Know Your AC Unit 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 .

  • Page 15: More Features

    Get to Know Your AC Unit NOTE Every time the air conditioner is powered on, a buzzing sound will be heard to indicate that the product has been powered on normally . If there is no sound, it is possible that the unit is abnormal . Please power on again or check the circuit . The actual functions are subject to the product you purchased, please check the indoor display and remote control of your AC .

  • Page 16: Setting Angle Of Air Flow

    Setting Angle of Air Flow NOTE Setting vertical angle of air flow (Remote control) While the unit is on, use the SWING/DIRECT button on remote control to set the direction (vertical angle) of airflow . Please refer to the Remote Control Manual for details .

  • Page 17: Manual Operation (Without Remote)

    Manual Operation (without remote) CAUTION: For product use 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 .

  • Page 18: Care And Maintenance

    Care and Maintenance CAUTION • Blocked and/or clogged AC filter will result in reduced cooling efficiency and may pose a risk to health . Make sure to clean the filter every two weeks . • Always TURN OFF your AC system and disconnect its power supply before cleaning or maintenance .

  • Page 19: Maintenance - Long Periods Of Non-Use

    Care and Maintenance 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 . •...

  • Page 20: Troubleshooting

    Troubleshooting CAUTION If any of the following conditions occurs, turn off your unit immediately! • The wire 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 •...
  • Page 21 Troubleshooting Issue Possible Causes The outdoor unit makes The unit will make different sounds based on its current operating mode . noises Dust is emitted from The unit may accumulate dust during extended periods of non-use, which will either the indoor or be emitted when the unit is turned on .
  • Page 22 Troubleshooting Issue Possible Causes Solution Power failure Wait for the power to be restored The power is turned off Turn on the power Call your dealer, installer or certified HVAC The fuse is burned out technician to replace the fuse The unit is not working Remote control batteries are dead...
  • Page 23 Operation Instructions Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Let’s Start Installing Your AC .

  • Page 24: Safety Precautions

    Safety Precautions It is really important you read Safety Precautions before installation and operation . 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 . Explanation of Symbols WARNING This symbol indicates the possibility of personnel injury or loss of life .
  • Page 25 Safety Precautions WARNINGS FOR PRODUCT INSTALLATION • Turn off the air conditioner and disconnect the power before performing any installation or repairing . Failure to do so can cause electric shock . • Installation must be performed by an authorized dealer or specialist . Defective installation can cause water leakage, electrical shock, or fire .
  • Page 26 Safety Precautions For R454B refrigerant charge amount and minimum room area: The machine you purchased may be one of the types in the table below . The indoor and outdoor units are designed to be used together . Please check the machine you purchased . The indoor unit should be installed at least 6 .0ft /1 .8m above from the floor, the height of the room cannot be less than 7 .3ft /2 .2m, and the minimum room area of operating or storage should be as specified in the following table .
  • Page 27 Safety Precautions For the units with refrigerant sensors, when the unit detects a refrigerant leak, the minimum airflow of the indoor unit is as follows: Model Model Indoor unit Indoor unit Outdoor unit Outdoor unit Indoor nominal air volume Indoor nominal air volume 500004479 500004479 500004490...
  • Page 28 Safety Precautions 1. Installation (where refrigerant pipes are allowed) - Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance with an industry recognized assessment specification .
  • Page 29 Safety Precautions - that precautions shall be taken to avoid excessive vibration or pulsation; - the minimum floor area of the room shall be mentioned in the form of a table or a single figure without reference to a formula; - after completion of field piping for split systems, the field pipework shall be pressure tested with an inert gas and then vacuum tested prior to refrigerant charging, according to the following requirements:...
  • Page 30 Safety Precautions 6. Detection of flammable refrigerants Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks . A halide torch (or any other detector using a naked flame) shall not be used .
  • Page 31 Safety Precautions 8. Charging procedures In addition to conventional charging procedures, the following requirements shall be followed: • Works shall be undertaken with appropriate tools only (In case of uncertainty, please consult the manufacturer of the tools for use with flammable refrigerants) •...

  • Page 32: Let's Start Installing Your Ac

    Let’s Start Installing Your AC Check over the 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 . Items not included with the air conditioner must be purchased separately .

  • Page 33: Installation Overview

    Installation Overview NOTE Illustrations in this manual are for explanatory purposes . The actual shape of your indoor unit may be slightly di fferent . The actual shape shall prevail . Circuit breaker Drain Pipe Wall Mounting Plate Remote Controller (purchase separately) Remote controller holder Connection Cable...

  • Page 34: Installation Summary - Indoor Unit

    Installation Summary - Indoor Unit 5 .9 in 15 cm 4 .72 in 4 .72 in 12 cm 12 cm 70 .87 in 1 .8 m Select Installation Location Attach Mounting Plate Determine Wall Hole Position Drill Wall Hole Prepare Drain Hose...
  • Page 35 Installation Summary - Indoor Unit Wrap Piping and drain hose Connect Wiring Connect Piping Mount Indoor Unit...

  • Page 36: Install Your Indoor Unit

    Install Your Indoor Unit Select installation location NOTE - 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 . The following are standards that will help you choose an appropriate location for the unit .
  • Page 37 Install Your Indoor Unit Drill wall hole for connecting piping Determine wall hole location 15 . 9 in (403 mm) Step 1: 5 . 1 2 in (130 mm) 5 . 2 4 in (133 mm) Remove the screw that attaches the mounting plate to the back of the indoor unit .
  • Page 38 Install Your Indoor Unit NOTE - The wall hole size The size of the wall hole is determined by the connecting pipes . When the pipe size of the gas side is 5/8 in (16mm) or more, the wall hole should be 3 .54 in (90  m) .
  • Page 39 Install Your Indoor Unit Install refrigerant pipe & drain hose NOTE 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 . Prepare refrigerant piping Step 1: Step 2:...

  • Page 40: Prepare Refrigerant Piping

    Install Your Indoor Unit PREPARE REFRIGERANT PIPING For the portion of the drain hose that will remain indoors, wrap it with foam pipe insulation to prevent condensation . Drain Remove the air filter and pour a small amount hose of water into the drain pan to make sure that water flows from the unit smoothly .

  • Page 41: Connect Signal And Power Cables

    Install Your Indoor Unit Electrical work preparation WARNING BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE REGULATIONS BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK, TURN OFF THE MAIN POWER TO THE SYSTEM. Connect signal and power cables 1 . All wiring must comply with local and national electrical codes, regulations and must be installed by a licensed electrician .
  • Page 42 Install Your Indoor Unit 1 . Open front panel of the indoor unit . 2 . Using a screwdriver, open the wire box cover on the right side of the unit . This will reveal the terminal block . 3 . Facing the back of the unit, remove the Terminal block big plastic knock-out panel to create a slot Wire cover...

  • Page 43: Do Not Wrap Ends Of Piping

    Install Your Indoor Unit Wrap piping & cables NOTE Before passing the piping, and drain hose through the wall hole, you must bundle them together to save space, protect them, and insulate them . Indoor Unit Step 1: Bundle the drain hose, refrigerant pipes as shown above .

  • Page 44: Mount Indoor Unit

    Install Your Indoor Unit Mount indoor unit Hook it Connecting cable Drain hose Put pipes in wall hole Hook it and press down lightly Check that the unit is firmly to secure mounted If you installed new connective piping to the outdoor unit, do the following: •...
  • Page 45 Install Your Indoor Unit If refrigerant piping is already embedded in the wall, do the following: • Hook the top of the indoor unit on the upper hook of the mounting plate . • Use a bracket or wedge to prop up the unit, giving you enough room to connect the refrigerant piping, signal cable, and drain Wedge hose .

  • Page 46: Install Your Outdoor Unit

    Install Your Outdoor Unit NOTE - PRIOR TO INSTALLATION 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 . Select installation location Proper installation locations meet the following standards: 20 in .

  • Page 47: Install Drain Joint

    Install Your Outdoor Unit Install drain joint NOTE - PRIOR TO INSTALLATION Before bolting the outdoor unit in place, you must install the drain joint at the bottom of the unit . For the units with base pan built-in with multiple holes for proper draining during defrost, the drain joint is no need to be installed .

  • Page 48: Anchor Outdoor Unit

    Install Your Outdoor Unit Anchor Outdoor Unit WARNING WHEN DRILLING INTO CONCRETE, EYE PROTECTION IS RECOMMENDED AT ALL TIMES. • 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 . •...
  • Page 49 Install Your Outdoor Unit Connect signal and power cables WARNING - BEFORE THE OPERATION • ALL WIRING WORK MUST BE PERFORMED STRICTLY IN ACCORDANCE WITH THE WIRING DIAGRAM LOCATED INSIDE OF WIRE COVER OF THE OUTDOOR UNIT . • BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK,TURN OFF THE MAIN POWER TO THE SYSTEM .

  • Page 50: Refrigerant Piping Connection

    Refrigerant Piping Connection Piping Connection Precautions WARNING 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 .
  • Page 51 Refrigerant Piping Connection DO NOT DEFORM PIPE WHILE CUTTING Be careful not to damage, dent, or deform the pipe while cutting . This will drastically reduce the heating and cooling efficiency of the unit . CAUTION MUST BE CHECK OVER THE END OF THE PIPE FOR CRACKS AND EVEN FLARING . ENSURE THE PIPE IS SEALED .

  • Page 52: Minimum Bend Radius

    Refrigerant Piping Connection Refer to Torque Requirement to connect pipes CAUTION 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 4 in ≥...
  • Page 53 Refrigerant Piping Connection Refer to Torque Requirement to connect pipes NOTE This section still needs to be operated according to the TORQUE REQUIREMENTS chart on the previous page . 1 . Unscrew the cover from the packed valve on the side of the outdoor unit . Unscrew the cover Valve...

  • Page 54: Air Evacuation

    Air Evacuation CAUTION - 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 . Ensure to evacuate the air inside the indoor unit and pipes with vacuum pump . Use a vacuum pump and manifold gauge to evacuate the refrigerant circuit, removing any non-condensible gas and moisture from the system .

  • Page 55: Note On Adding Refrigerant

    Air Evacuation • If there is a change in system pressure, refer to Gas Leak Check section for information on how to check for leaks . Flare nut • If there is no change in system pressure, unscrew the cap from the packed valve (high pressure valve) .

  • Page 56: Electrical And Gas Leak Checks

    Electrical and Gas Leak Checks WARNING - RISK OF ELECTRIC SHOCK ALL WIRING MUST COMPLY WITH LOCAL AND NATIONAL ELECTRICAL CODES, AND MUST BE INSTALLED BY A LICENSED ELECTRICIAN . BEFORE TEST RUN Only perform test run after you have completed the following steps: •...

  • Page 57: Double-Check Pipe Connections

    Test Run Test Run Instructions DOUBLE-CHECK PIPE CONNECTIONS You should perform the Test Run for at least 30 During operation, the pressure of the minutes . refrigerant circuit will increase . This may • Connect power to the unit . reveal leaks that were not present during your initial leak check .
  • Page 58 Packing and Unpacking The Unit INSTRUCTIONS FOR PACKING AND UNPACKING THE UNIT: UNPACKING: Indoor unit: 1 . Cut the sealing tape on the carton with a knife, one cut on the left, one cut in the middle and one cut on the right . 2 .

  • Page 59: Warranty

    This limited warranty applies to the parts and compressor workmanship during the 10-year limited warranty period you of your Convectair Legato Split-type Room Air Conditioner . have the following rights: This limited warranty applies only to purchases made in any •...
  • Page 60 In keeping with our policy of continuous product improvement, we reserve the right to make changes without notice. © 2024 Glen Dimplex Americas...

This manual is also suitable for:

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