SINGLE ZONE MEGA AND MEGA 115V WALL MOUNTED INSTALLATION MANUAL Single Zone Mega: LS090HEV2, LS120HEV2, LS180HEV2, LS240HEV2 Single Zone Mega 115V: LS090HXV, LS120HXV
PROPRIETARY DATA NOTICE This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc., and are disclosed by LG Electronics U.S.A., Inc., only in confidence. This document is for design purposes only. Do not throw away, destroy, or lose this manual. Please read carefully and store in a safe place for future reference. Content familiarity required for proper installation.
SAFETY INSTRUCTIONS The instructions below must be followed to prevent product malfunction, property damage, injury or death to the user or other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols described below. TABLE OF SYMBOLS DANGER This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
SAFETY INSTRUCTIONS Single Zone Mega and Mega 115V Wall Mounted Installation Manual INSTALLATION - CONTINUED If the air conditioner is installed in a small space, take measures to prevent the refrigerant concentration from exceeding safety limits in the event of a refrigerant leak. Consult the latest edition of ASHRAE (American Society of Heating, Refrigerating, and Air Conditioning Engineers) Standard 15.
SAFETY INSTRUCTIONS WIRING High voltage electricity is required to operate this system. Adhere to the National Electrical Codes and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death. 7XUQ WKH SRZHU Rႇ DW WKH QHDUHVW GLVFRQQHFW EHIRUH VHUYLFLQJ the equipment. Electrical shock can cause physical injury or death. Properly size all circuit breakers or fuses. 7KHUH LV ULVN RI ¿UH HOHFWULF VKRFN H[SORVLRQ SK\VLFDO LQMXU\ RU GHDWK Always g
SAFETY INSTRUCTIONS OPERATION Periodically verify that the hardware securing the unit has not deteriorated. Single Zone Mega and Mega 115V Wall Mounted Installation Manual 'R QRW SURYLGH SRZHU WR RU RSHUDWH WKH XQLW LI LW LV ÀRRGed or submerged. If the unit falls from its installed location, it can cause property damage, product failure, physical injury or death. 7KHUH LV ULVN RI ¿UH HOHFWULF VKRFN SK\VLFDO LQMXU\ RU GHDWK If gas leaks out, ventilate the area before operating the unit.
TABLE OF CONTENTS Safety Instructions ............................................................................. 3-6 General Data ..................................................................................... 8-12 Unit Nomenclature ............................................................................... 8 Parts .................................................................................................... 9 6SHFL¿FDWLRQV ................................................................
GENERAL DATA Unit Nomenclature Indoor Units and Outdoor Units Single Zone Mega and Mega 115V Wall Mounted Installation Manual L S N 180 H L = LG Frame Type: A: Art Cool™ S: Standard C: Four-Way Ceiling-Cassette D: Ceiling-Concealed Duct (Low Static) H: Ceiling-Concealed Duct (High Static) V: Vertical-Horizontal Air Handling N: Indoor Unit: U: Outdoor Unit No N or U: System Capacity (Mbh) 9=9 12 = 12 18 = 18 24 = 24 36 = 36 42 = 42 48 = 48 System Type: H = Heat Pump Style: SV = High Efficiency In
GENERAL DATA Parts Required Tools (field provided) • • • • Level Screwdriver Electrical lineman pliers Electric drill • • • • Hole saw Drill Flaring tool set Tubing cutter • • • • Tube/pipe reamer Torque wrenches Allen wrench Gas-leak detector • • • • Thermometer Measuring tape Multimeter Ammeter Required Parts (field provided) • Connecting cable (power and control) • Pipes - vapor line and liquid line, with insulation • Insulated drain hose • Additional drain hose Included Parts (Depends on Mode
GENERAL DATA 0HJD 6SHFL¿FDWLRQV Table 1: 6LQJOH =RQH 0HJD 6\VWHP 6SHFL¿FDWLRQV LS090HEV2 LS120HEV2 LS180HEV2 LS240HEV2 (LSN090HEV2/ (LSN120HEV2/ (LSN180HEV2/ (LSN240HEV2/ LSU090HEV2) LSU120HEV2) LSU180HEV2) LSU240HEV2) Cooling Capacity (Min/Rated/Max) (Btu/h) 3,070 ~ 9,000 ~10,330 3,070 ~ 12,000 ~ 13,780 3,685 ~ 18,000 ~ 18,493 3,685 ~ 22,000 ~ 24,000 Cooling Power Input1 (kW) 0.72 1.142 1.5 2.
GENERAL DATA 0HJD 9 6SHFL¿FDWLRQV Table 2: 6LQJOH =RQH 0HJD 9 6\VWHP 6SHFL¿FDWLRQV LS090HXV (LSN090HXV/LSU090HXV) LS120HXV (LSN120HXV/LSU120HXV) 1,023 ~ 8,500 ~ 13,785 1,023 ~ 12,000 ~ 13,785 0.71 1.14 1,023 ~ 10,900 ~ 22,178 1,023 ~ 13,000 ~ 22,178 0.88 1.09 3.63 3.50 12.01 10.5 17.0 17.0 9.0 9.
GENERAL DATA Electrical Table 3: 208-230V, 60Hz, 1-Phase Single-Zone Mega System Electrical Data Table. Single Zone Mega and Mega 115V Wall Mounted Installation Manual Voltage Nominal Unit Model Hertz Voltage Range (Min. Tons No. to Max.) 3/4 LS090HEV2 1 LS120HEV2 1-1/2 LS180HEV2 2 LS240HEV2 60 208 - 230 187 - 253 Compressor Motor RLA Cooling Heating MCA MOP 10.0 15 1 7.0 7.0 43 10.0 15 1 7.0 7.0 15.0 20 1 10.0 15.0 20 1 10.0 W FLA 0.4 30 0.4 43 0.4 30 0.4 10.
GENERAL INSTALLATION GUIDELINES Outdoor Unit Location Selection Selecting the Best Location for the Outdoor Unit DANGER • Do not install the unit in an area where combustible gas will generate, flow, stagnate, or leak. These conditions can cause a fire, resulting in bodily injury or death. • Do not install the unit in a location where acidic solution and spray (sulfur) are often used as it can cause bodily injury or death.
GENERAL INSTALLATION GUIDELINES Outdoor Unit Location Selection Planning for Snow and Ice, continued. Single Zone Mega and Mega 115V Wall Mounted Installation Manual When deciding on a location to place the outdoor unit, be sure to choose an area where run-off water from defrost cycle will not accumulate and freeze on sidewalks or driveways, which will create unsafe conditions.
GENERAL INSTALLATION GUIDELINES Outdoor Unit Location Selection Oceanside Applications Figure 2: Oceanside Placement Using Windbreak. Use of a Windbreak to Shield from Sea Wind Windbreak Ocean winds will cause corrosion, particularly on the condenser and HYDSRUDWRU ¿QV ZKLFK LQ WXUQ FRXOG FDXVH SURGXFW PDOIXQFWLRQ RU LQHI¿FLHQW SHUIRUPDQFH • • • • Additional anti-corrosion treatment will need to be applied to the outdoor unit at oceanside locations.
GENERAL INSTALLATION GUIDELINES Required Outdoor Unit Clearances Single Zone Mega and Mega 115V Wall Mounted Installation Manual Minimum Allowable Clearance and Service Access Requirements Proper clearance for the outdoor unit coil is critical for proper operation. When installing the outdoor unit, consider service, inlet and outlet, and minimum allowable space requirements as illustrated in the diagrams below. • Include enough space for airflow and for service access.
GENERAL INSTALLATION GUIDELINES Rigging and Lifting / Outdoor Unit Mounting Rigging and Lifting Instructions Wear protective gloves and safety goggles when handling equipment. Sharp edges will cause personal injury. Dispose of the packing materials safely. • Packing materials, such as nails and other metal or wooden parts, will cause puncture wounds or other injuries. • Tear apart and throw away plastic packaging bags so that children do not play with them and risk suffocation and death.
GENERAL INSTALLATION GUIDELINES Outdoor Unit Mounting Concrete Platform Specifications Figure 6: Example of Using an Insert for a Hole in a Reinforced Concrete Beam. Figure 7: Close up of Bolt Attachment. Unit: Inch Anchor Bolt Polyblock / Anti-Vibration Material Insert 7/16 (M10) Nail Securing Polyblock Minimum 1 Minimum 3 to 5 Single Zone Mega and Mega 115V Wall Mounted Installation Manual • Concrete foundations must be made of one part cement, two parts sand, and four parts gravel.
GENERAL INSTALLATION GUIDELINES Indoor Unit Location Selection / Required Indoor Unit Clearances Selecting the Best Location for the Indoor Unit Follow recommended best practices when choosing an indoor location for the single zone indoor unit. Figure 10: Mega Indoor Unit Clearance Requirements. Unit: Inch (mm) Dos >8 (200) >4 (100) >4 (100) At least 6-1/2 feet from the floor Table 8: Mega Indoor Unit Ceiling Clearance.
GENERAL INSTALLATION GUIDELINES Indoor Unit Mounting Figure 12: Drilling Piping Hole. WALL Follow all piping clearance recommendations. 1. Using a 2-9/16 inch hole core drill bit, drill a hole at either the right or left side of the wall mounting, pre-chosen following installation guidelines and application needs. • The slant of the hole must be 3/16” to 5/16” from level with the slant being upward on the indoor unit side and downward on the outdoor unit side. 2.
GENERAL INSTALLATION GUIDELINES Indoor Unit Mounting Installation Plate 3-9/32 (83) Chassis Hook 2-3/32 (53) 7-13/32 (188) Unit Outline 5-9/32 (134) Ø2-9/16 (65) 13-19/32 (345) 5-29/32 (150) Ø2-9/16 (65) 5-13/32 (137) 1-1/16 (27) Type "A" Screws 14-11/16 (373) 1-1/16 (27) 2-3/32 (53) 11-13/16 (300) Installation Plate 4-17/32 (115) 2-23/32 (69) Figure 18: Mega 18 and 24K Wall Mount Indoor Unit Installation Plate Dimensions.
GENERAL INSTALLATION GUIDELINES Indoor Unit Mounting Removing the Indoor Unit Bottom Cover (Mega HEV2 Indoor Units Only), continued. Single Zone Mega and Mega 115V Wall Mounted Installation Manual Figure 23: Bottom Cover with Top and Middle Unsnapped, Front View (Appearances Will Vary Depending on Indoor Unit Model). Figure 22: Back of Bottom Cover Completely Removed from Indoor Unit (Appearances Will Vary Depending on Indoor Unit Model).
GENERAL INSTALLATION GUIDELINES Indoor Unit Mounting Mounting the Indoor Unit to the Installation Plate 1. Position the indoor unit onto the upper portion of the installation plate. Figure 25: Attaching the Indoor Unit to the Installation Plate (Mega Example. Appearances Will Vary Depending on Model). 2. Engage the hooks at the top of the indoor unit with the upper edge of the installation plate (number of hooks depends on model type). 3.
GENERAL INSTALLATION GUIDELINES Indoor Unit Mounting Single Zone Mega and Mega 115V Wall Mounted Installation Manual 3UHSDULQJ IRU 3LSLQJ (OHFWULFDO &RQQHFWLRQV 1. To prepare the indoor unit for piping and electrical installation, disengage bottom on indoor unit from installation plate by reversing Steps 6, 5, and 4 from the previous procedure, if those procedures have been performed. 2. Unsnap the piping / drain hose holder (L-bracket) out from the indoor unit chassis.
5()5,*(5$17 6$)(7< 67$1'$5'6 DEVICE CONNECTION LIMITATIONS Refrigerant Safety Standards ASHRAE Standards 15-2010 and 34-2010 address refrigerant safety and the maximum allowable concentration of refrigerant in an occupied space. Refrigerant will dissipate into the atmosphere, but a certain volume of air is required to safely dissipate the refrigerant. For R410A refrigerant, the maximum allowable concentration of refrigerant is 26 lbs.
SELECTING FIELD SUPPLIED PIPING Selecting Field-Supplied Copper Piping Single Zone Mega and Mega 115V Wall Mounted Installation Manual Always follow local codes when selecting and installing copper pipe and piping system components. Approved piping for use with LG Single Zone products will be marked “R410 RATED” along the length of the pipe. Piping wall thickness must meet local code requirements and be approved for a maximum operating pressure of 551 psi.
COPPER EXPANSION AND CONTRACTION Copper Expansion and Contraction Under normal operating conditions, the vapor pipe temperature of a Duct Free System can vary as much as 280°F. With this large variance in pipe temperature, the designer must consider pipe expansion and contraction to avoid pipe and fitting fatigue failures. If the pipe is mounted in free air space, no natural restriction to movement is present if mounting clamps are properly spaced and installed.
COPPER EXPANSION AND CONTRACTION Single Zone Mega and Mega 115V Wall Mounted Installation Manual Table 13: Linear Thermal Expansion of Copper Tubing in Inches. Pipe Length1 10 20 30 40 50 60 70 80 90 100 120 140 160 180 1 35° 0.04 0.08 0.12 0.16 0.20 0.24 0.28 0.32 0.36 0.40 0.48 0.56 0.64 0.72 40° 0.04 0.08 0.12 0.16 0.20 0.24 0.28 0.32 0.36 0.40 0.48 0.56 0.64 0.72 45° 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.60 0.70 0.80 0.90 50° 0.06 0.12 0.18 0.24 0.30 0.36 0.42 0.48 0.54 0.60 0.72 0.
PIPING HANDLING Piping Materials and Handling Keep Pipes Capped While Storing. Pipes used for the refrigerant piping system must include the specified thickness, and the interior must be clean. While handling and storing, do not bend or damage the pipes, and take care not to contaminate the interior with dust, moisture, etc. Keep refrigerant pipe dry, clean, and airtight. Moisture Possible - Significant hydrolysis of refrigerant oil. Problems - Refrigerant oil degradation.
REFRIGERANT SYSTEM ENGINEERING Single Zone Mega and Mega 115V Wall Mounted Installation Manual Proper system operation depends on the installer using utmost care while assembling the piping system. The following pages are an overview of best practices when installing the refrigerant piping system. LG Electronics U.S.A.,Inc.
REFRIGERANT SYSTEM ENGINEERING Obstacles Figure 32: Installing Piping Above and Below an Obstacle. 3X MINIMUM X X 3X MINIMUM Above an obstacle Below an obstacle Pipe Supports Figure 33: Pipe Hanger Details. A properly installed pipe system must be adequately supported to avoid pipe sagging. Sagging pipes become oil traps that lead to equipment malfunction. Pipe supports must never touch the pipe wall; supports must be installed outside (around) the primary pipe insulation jacket.
REFRIGERANT SYSTEM ENGINEERING Pipe Sleeves at Penetrations Single Zone Mega and Mega 115V Wall Mounted Installation Manual LG requires that all pipe penetrations through walls, floors, and pipes buried underground be properly insulated and routed through an appropriate wall sleeve of sufficient size to prevent compression of refrigerant pipe insulation and free movement of the pipe within the sleeve.
FLARING AND BRAZING PROCEDURES Flaring and Brazing Procedures One of the main causes of refrigerant leaks is a defective connection. For LG HVAC systems, the installer needs to know how perform both flared and brazed connections successfully. • During installation, it is imperative to keep the piping system free of contaminants and debris such as copper burrs, slag, or carbon dust. Do not use kinked pipe caused by excessive bending in one specific area on its length. • Flaring Procedure 1.
FLARING AND BRAZING PROCEDURES Single Zone Mega and Mega 115V Wall Mounted Installation Manual Tightening the Flare Nuts Tightening Torque for Flare Nuts. Pipe Size (in. O.D.) Outside Diameter (mm) Tightening Torque (ft-lbs.) 13.0 - 18.0 1/4 6.35 9.52 24.6 - 30.4 3/8 39.8 - 47.7 1/2 12.7 45.4 - 59.3 15.88 5/8 71.5 - 87.5 19.05 3/4 1. When connecting the flare nuts, coat the flare (outside only) with polyvinyl ether (PVE) refrigeration oil only.
REFRIGERANT PIPING CONNECTIONS Installation Overview Installation Single Zone Mega and Mega 115V Wall-Mounted systems are one-to-one systems. There is a direct piping connection between the outdoor unit and the indoor unit. The figure at right illustrates the basic pipe connections between the outdoor and indoor unit. Refer to the illustration when proceeding with pipe connections. The illustration shows the indoor unit being installed at a higher position than the outdoor unit.
REFRIGERANT PIPING CONNECTIONS Special Applications Special Applications Figure 39: Special Applications. Single Zone Mega and Mega 115V Wall Mounted Installation Manual If an additional drain hose is necessary, the end of drain outlet must be routed above the ground. Secure the drain hose appropriately. When the Outdoor Unit is Installed Below the Indoor Unit: 1.
REFRIGERANT PIPING CONNECTIONS Outdoor Unit Connections Outdoor Unit Connections 1. Remove the piping cover or piping / control box cover (configuration depends on outdoor unit model) from the unit by loosening the fastening screws. 2. Align the center of the refrigerant piping and corresponding connection as shown. 3. Refer to the figures below for liquid and gas (vapor) piping attachments onto the outdoor unit. 4. Place a couple of drops of PVE refrigerant oil on outside of the flare before assembling.
REFRIGERANT PIPING CONNECTIONS Indoor Unit Connections Removing the Indoor Unit Cover (HXV Only) Single Zone Mega and Mega 115V Wall Mounted Installation Manual To access the indoor unit piping port connections, and to make the indoor unit installation procedure easier, it is recommended that the bottom cover be removed first. Figure 44: Latch over Screws on Bottom Cover, Indoor Unit. 1. On the bottom cover of the indoor unit, unsnap the latches that hide the screws.
REFRIGERANT PIPING CONNECTIONS Indoor Unit Connections $FFHVVLQJ DQG 3RVLWLRQLQJ WKH ,QGRRU 8QLW 3LSLQJ &RQQHFWLRQV +;9 2QO\ 1. At the back of the indoor unit, pull the piping holder away. 2. Remove the pipe port cover. 3. Position the piping by unfolding and bending it slowly downward first. • Do not bend the piping directly backwards or to the left or right sides without bending it downward first; this will damage the indoor unit piping.
REFRIGERANT PIPING CONNECTIONS Indoor Unit Connections Single Zone Mega and Mega 115V Wall Mounted Installation Manual Removing the Indoor Unit Bottom Cover (HEV2 Only) To access the indoor unit piping port connections, and to make the indoor unit installation procedure easier, it is recommended that the bottom cover be removed first. 1. Unsnap the bottom cover at its top left and right sides (Location 1). Figure 50: Removing the Bottom Cover. Figure 51: Removing the Bottom Cover, Alternate View. 2.
REFRIGERANT PIPING CONNECTIONS Indoor Unit Connections Accessing and Positioning the Indoor Unit Piping / Connections (HEV2 Only), continued. • Do not bend the piping directly backwards or to the left or right sides without bending it downward first; this will damage the indoor unit piping. • Do not forcibly press the refrigerant piping onto the bottom frame or the front grille; this will damage the indoor unit piping and / or indoor unit frame. • Ensure the piping is straight.
REFRIGERANT PIPING CONNECTIONS Indoor Unit Connections Single Zone Mega and Mega 115V Wall Mounted Installation Manual Accessing and Positioning the Indoor Unit Piping / Connections (HEV2 Only), continued. Figure 59: Piping Installation When Piping is on the Right Side. Piping Installation When Piping is on the Right Side (HEV2 Only) Right Side Piping See the Electrical System Installation section for information on how to connect the communication / connection (power) wiring from the outdoor unit. 1.
REFRIGERANT PIPING CONNECTIONS Outdoor Unit Drain Piping / Indoor Unit Drain Hose Outdoor Unit Condensate Drain Piping Installation Depending on the installation location, it could be necessary to install factory-supplied drain plug(s).See pages 13 to 16 for information in reference to outdoor unit placement. Figure 61: HXV Outdoor Unit Drain Connection Components Drain Connection Drain Cap Drain Washer Ensure drain piping is insulated.
REFRIGERANT PIPING CONNECTIONS Indoor Unit Drain Hose Single Zone Mega and Mega 115V Wall Mounted Installation Manual Condensate Drain Hose Installation; from Indoor Unit to Drain System (HEV2 and HXV), continued. • Insert the drain hose >2 inches so it won’t pull out of the field-supplied drain pipe. Avoid piping the drain hose as shown in the diagrams in the • figure below. These methods are incorrect and can cause leaks at the indoor unit site.
REFRIGERANT PIPING CONNECTIONS Indoor Unit Drain Hose Checking the Indoor Unit Drain Hose for Leaks Figure 71: Checking for Leaks at the Indoor Unit. 1. Pour a glass of water on the evaporator. 2. Verify that the water flows appropriately through and out of the drain hose without any leaks.
INSULATION Refrigerant Piping System Insulation Single Zone Mega and Mega 115V Wall Mounted Installation Manual )RU LQIRUPDWLRQ UHJDUGLQJ LQVXODWLRQ IRU XQGHUJURXQG RU SHQHWUDWLRQ VLWXDWLRQV VHH WKH ³*HQHUDO 5HIULJHUDQW 3LSLQJ 6\VWHP ,QIRUPDWLRQ´ VHFWLRQ All refrigerant piping from the outdoor unit to the indoor units must be insulated correctly for safety and usage.
INSULATION Minimum Refrigerant Pipe Ethylene Propylene Diene Methylene (EPDM) Insulation Wall Thickness Requirements • Do not insulate gas and liquid pipes together as this can result in pipe leakage and malfunction due to extreme temperature fluctuations. • Always properly insulate the piping. Insufficient insulation will result in condensation, reduced heating/cooling performance, etc. Also, if the pipes aren’t insulated properly, condensation could potentially cause damage to building finishes.
ELECTRICAL SYSTEM INSTALLATION Single Zone Mega and Mega 115V Wall Mounted Installation Manual 6DIHW\ *XLGHOLQHV &RQQHFWLRQV DQG 6SHFL¿FDWLRQV • All power wiring and communication cable installation must be performed by trained service providers working in accordance with local, state, and National Electrical Code (NEC) / UL / ETL federal regulations related to electrical equipment and wiring, and following the manufacturer product diagrams, requirements, and instructions in this manual.
ELECTRICAL SYSTEM INSTALLATION &RQQHFWLRQV DQG 6SHFL¿FDWLRQV 3RZHU :LULQJ &RPPXQLFDWLRQ &DEOH &RQQHFWLRQV FRQWLQXHG WARNING Figure 78: Adding a Ring Terminal to the Wiring. Ring Terminal Figure 79: Tightening the Ring Terminal to the Terminal Plate. Electrical System Installation 1. Remove the JIS terminal screws from the (outdoor unit or indoor unit) terminal plate with a JIS screwdriver. (See information about LG terminal connections below.) 2.
ELECTRICAL SYSTEM INSTALLATION &RQQHFWLRQV DQG 6SHFL¿FDWLRQV Single Zone Mega and Mega 115V Wall Mounted Installation Manual 3RZHU 6XSSO\ 3RZHU :LULQJ 6SHFLILFDWLRQV • Mega systems operate at 1Ø, 208-230V, 60Hz. Figure 83: Single Zone Outdoor Unit Power Wiring Diagram.
ELECTRICAL SYSTEM INSTALLATION &RQQHFWLRQV DQG 6SHFL¿FDWLRQV &RPPXQLFDWLRQ &RQQHFWLRQ 3RZHU &DEOH 6SHFLILFDWLRQV IURP 2XWGRRU Figure 84: Typical Single Zone Outdoor Unit to Indoor Unit Wiring and Unit to Indoor Unit • Always verify the communication cable is connected to a communications terminal on the Single Zone unit. Never apply line voltage power to the communication cable connection. If contact is made, the PCBs will be damaged.
ELECTRICAL SYSTEM INSTALLATION &RQQHFWLRQV DQG 6SHFL¿FDWLRQV Figure 88: Schematic of a Single Zone System When the Wiring is GREATER THAN 130 Feet.
ELECTRICAL SYSTEM INSTALLATION Controller Options Controller Options Single Zone Mega and Mega 115V Wall Mount systems include a wireless handheld remote controller (Model Nos. AKB74955602 [Mega] and AKB73456121 [Mega 115V]). Optional LG-suppled wired controllers are available for the Mega 115V units. See “Functions, Controls, Options” in the Single Zone Mega (HEV2) and Mega 115V Wall Mounted Engineering Manual”, or contact an LG representative for more information.
ELECTRICAL SYSTEM INSTALLATION Indoor Unit Electrical Connections Single Zone Mega and Mega 115V Wall Mounted Installation Manual Connecting Indoor Unit Electrical Wiring (HXV Only) • Verify that main power to the unit is completely off before proceeding with these steps as there is a risk of electrical shock, bodily injury, and / or death. • Follow all safety and warning information outlined at the beginning and throughout this manual.
ELECTRICAL SYSTEM INSTALLATION Indoor Unit Electrical Connections Connecting Indoor Unit Electrical Wiring (HXV Only), continued. 5. When done, reattach the bottom cover to the indoor unit, being careful to align cover using the rear tabs. Tap the cover gently with the palm of a hand to ensure it engages at the bottom. Figure 101: Terminal Block Connections for Mega 115V 090HXV, 120HXV Indoor Units. Terminal Block Expanded View 6.
ELECTRICAL SYSTEM INSTALLATION Indoor Unit Electrical Connections Single Zone Mega and Mega 115V Wall Mounted Installation Manual Connecting Indoor Unit Electrical Wiring (HEV2 Only) • Verify that main power to the unit is completely off before proceeding with these steps as there is a risk of electrical shock, bodily injury, and / or death. • Follow all safety and warning information outlined at the beginning and throughout this manual.
ELECTRICAL SYSTEM INSTALLATION Indoor Unit Electrical Connections Connecting Indoor Unit Electrical Wiring (HEV2 Only), continued. 7. Choice of the cable path out of the indoor unit and to the outdoor unit depends on refrigerant piping / drain hose installation: left side piping, following back of indoor unit; right side piping, through the knockout hole; or rear piping. Figure 108: Cable / Refrigerant Piping / Drain Hose Installation Options.
ELECTRICAL SYSTEM INSTALLATION Outdoor Unit Electrical Connections Single Zone Mega and Mega 115V Wall Mounted Installation Manual Connecting Outdoor Unit Wiring • Verify that main power is completely off and that no power is going through the Single Zone system before proceeding with these steps. Follow all safety and warning information outlined at the beginning of this manual. Failure to do so will cause electric shock, bodily injury and / or death.
ELECTRICAL SYSTEM INSTALLATION Outdoor Unit Electrical Connections Connecting Outdoor Unit Wiring, continued. Figure 112: Example of Conduit. Do not install power wiring to the outdoor unit and the communication / connection (power) cable to the indoor unit in the same conduit. Use separate conduits. Communication problems will occur. 6. Using a JIS screwdriver, connect wires as shown at right.
FINAL INSTALLATION PROCEDURES Triple Leak / Pressure Test Single Zone Mega and Mega 115V Wall Mounted Installation Manual 7ULSOH /HDN 3UHVVXUH 7HVW After the refrigerant piping installation is complete, perform a triple leak / pressure test. Triple leak / pressure test is performed between the outdoor unit and indoor unit to verify that refrigerant can flow through the system without danger of leaks or pressure losses.
FINAL INSTALLATION PROCEDURES Triple Leak / Pressure and Deep Evacuation Tests Triple Leak / Pressure Check Procedure, continued. 7. If the pressure does NOT drop for one (1) hour, the system passes the test. 8. If the pressure drops, there is a leak and it must be found. Remove the bubble solution with a clean cloth, repair the leak(s), and perform the leak / pressure check again. 9.
FINAL INSTALLATION PROCEDURES Deep Evacuation and Triple Evacuation Tests Deep Evacuation Procedure, continued. Figure 117: Evacuation Procedure Diagram. Indoor Unit Single Zone Mega and Mega 115V Wall Mounted Installation Manual 3. (YDFXDWH WR VWDWLF PLFURQ OHYHO IRU DW OHDVW RQH KRXU 4. 0LFURQ OHYHO PXVW UHPDLQ IRU WZR KRXUV ,I WKH YDFXXP JDXJH ULVHV DQG VWRSV WKH system may contain moisture; therefore, it will be necessary to repeat the steps of vacuum break and drying.
FINAL INSTALLATION PROCEDURES Triple Evacuation Test Triple Evacuation Procedure Steps 1. If this procedure is performed shortly after the leak / pressure test, the cap and core on the gas (vapor) suction Schrader port must have already been removed, and the manifold must already be connected. If the procedure was not performed shortly after the leak / pressure test, make sure to remove the cap and core on the gas (vapor) suction Schrader port.
FINAL INSTALLATION PROCEDURES Refrigerant Trim Charge, Finishing the Job Single Zone Mega and Mega 115V Wall Mounted Installation Manual Refrigerant Trim Charge The single zone system will need an additional refrigerant charge if the installed piping lengths are greater than the “piping length (no additional refrigerant, ft.) specification” listed in the product tables. See the product sections in the engineering and installation manuals.
FINAL INSTALLATION PROCEDURES Reattaching the Indoor Unit Bottom Cover Reattaching the Indoor Unit Bottom Cover (HXV Only) Reattach the indoor unit bottom cover after all other installation procedures are complete. Figure 118: Aligning the Bottom Cover. 1. If ON, shut power OFF to the system. 2. Align the bottom cover to the indoor unit using the rear tabs. Tap the cover gently with the palm of a hand to ensure it engages at the bottom. 3.
FINAL INSTALLATION PROCEDURES Reattaching the Indoor Unit Bottom Cover Reattaching the Indoor Unit Bottom Cover (HEV2 Only) Reattach the indoor unit bottom cover after all other installation procedures are complete. Figure 122: Close Up of Bottom Cover Connections (Appearances Will Vary Depending on Indoor Unit Model). Single Zone Mega and Mega 115V Wall Mounted Installation Manual Top Snaps 1. If ON, shut power OFF to the system. C-Hooks 2.
FINAL INSTALLATION PROCEDURES Air Filter Disassembly and Assembly Air Filter Disassembly and Assembly (HEV2 Only) Air Filter Disassembly 1. Turn power off to the system. Figure 127: Disassembling the Air Filter (Appearances Will Vary Depending on Indoor Unit Model). 2. Lifting the Air Filter by the Handles. 2. Find the handles located at the top-front of the air filter molded into the plastic frame support. 3. Lift handles slightly up and out to remove the air filter. 3. Disassembling the Air Filter.
FINAL INSTALLATION PROCEDURES Installing Batteries, Test Run, Performance Evaluation Installing Batteries into the Handheld Remote Controller Figure 129: Installing the Remote Controller Batteries. Single Zone Mega and Mega 115V Wall Mounted Installation Manual For information on using the handheld remote controller, refer to its owner’s manual. 1. The remote controller needs two AAA (1.5V) batteries for operation.
FINAL INSTALLATION PROCEDURES Cooling Only Mode Installer Mode It will be necessary to switch to Installer mode if the system needs to operate in Heating Only or Cooling Only modes, or the Pump Down procedure needs to be performed. Figure 132: Using the Handheld Controller to Change System to Installer Mode (Appearances Will Differ, Depending on Model). To Enter Installer Mode: 1. Press the Reset and “A” buttons. A very slender tool is needed to access the Reset button. 2.
FINAL INSTALLATION PROCEDURES Pump Down Procedure Single Zone Mega and Mega 115V Wall Mounted Installation Manual Pump Down Procedure This procedure is performed when the refrigerant piping system is serviced. Pumping down collects all the refrigerant in the outdoor unit without losing any charge. Always adhere to and be familiar with local codes regarding the handling of refrigerant. The system must operate in Cooling Only mode to proceed with the pump down procedure.
TROUBLESHOOTING LG SIMS - Self Diagnosis Functions The SIMs WLAN module and the smart phone app together provide monitoring and troubleshooting capability for LG Duct Free Systems. SIMs function only with LG Duct Free products. LG SIMs can also be used with Single Zone one-to-one configurations such as the Single Zone Wall Mount systems. SIMs app is available for Apple® iPhone® iOS or Android™ smart phone operating systems.
TROUBLESHOOTING LG SIMS - Self Diagnosis Functions Single Zone Mega and Mega 115V Wall Mounted Installation Manual SIMs App Screens 72 Outdoor Info/ Component Screen Outdoor Info/ Temperature Screen Displays the following information: • Frequency • FAN1 RPM • FAN2 RPM • DC Link • Current • Voltage • EEV Mode • Restart Timer • Comp Mode • EEV Displays the following information: • Inv TD • Suction • Discharge • Cond Mid • Cond Out • Heatsink • Air Temp Indoor Info Tab Graph Info Tab Displays the fol
TROUBLESHOOTING Error Codes Troubleshooting Using Error Codes Refer to the table below and on the next two pages for error codes that are generated from the indoor and outdoor units. These codes are the most common. Your particular system might generate additional codes not listed here. Please contact LG Support if you see these types of errors and a simple power cycle has not corrected the issue.
TROUBLESHOOTING Error Codes Mega HEV2 Single Zone Wall Mounted Outdoor Unit Error Codes Single Zone Mega and Mega 115V Wall Mounted Installation Manual The Single Zone Wall Mounted outdoor unit error codes are visible on the outdoor unit, as well as from the indoor unit. However, the indoor unit error codes are only visible from the indoor unit and will not display at the outdoor unit.
TROUBLESHOOTING Error Codes Mega 115V HXV Single Zone Wall Mounted Indoor Unit Error Codes Figure 136: Mega 115V HXV Error Code Display LEDs. LED 1 (UNITS PLACE) LED 2 (TENS PLACE) Receiver Table 25: Mega 115V HXV Single Zone Wall Mounted Indoor Unit Error Codes.
TROUBLESHOOTING Mega 115V HXV Single Zone Wall Mounted Outdoor Unit Error Codes Single Zone Mega and Mega 115V Wall Mounted Installation Manual The Single Zone Wall Mounted outdoor unit error codes are visible on the outdoor unit, as well as from the indoor unit. However, the indoor unit error codes are only visible from the indoor unit and will not display at the outdoor unit.
CAUTIONS FOR REFRIGERANT LEAKS &DXWLRQV IRU 5HIULJHUDQW /HDNV ,QWURGXFWLRQ ASHRAE Standards 15-2010 and 34-2010 offer guidelines that address refrigerant safety and the maximum allowable concentration of refrigerant in an occupied space. Refrigerant will dissipate into the atmosphere, but a certain volume of air is required for this to occur safely. For R410A refrigerant, the maximum allowable concentration is 0.026 lbs./ft3 per 1,000 ft3 of air in an occupied space.
Major Component Rough-In Description INSTALLATION CHECKLIST Single Zone Mega and Mega 115V Wall Mounted Installation Manual Single Zone outdoor unit was connected properly per local code and the product installation procedures. All literature and bagged accessories have been removed from the fan discharge. Indoor unit was installed, properly supported, and located indoors in a non-corrosive environment.
20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway Alpharetta, Georgia 30022 www.lghvac.
