SINGLE ZONE HIGH EFFICIENCY, STANDARD, EXTENDED PIPE, AND MEGA WALL MOUNTED INSTALLATION MANUAL 6LQJOH =RQH +LJK (I¿FLHQF\ LS091HSV3, LS121HSV3, LS181HSV3, LS240HSV3 SLQJOH =RQH SWDQGDUG LS30 HV3, LS3 0HV3 SLQJOH =RQH ([WHQGHG 3LSH LS240HLV, LS300HLV, LS3 0HLV SLQJOH =RQH 0HJD LS090H(V, LS120H(V, LS180H(V, LS240H(V LS090HEV1, LS120HEV1, LS180HEV1, LS240HEV1 SLQJOH =RQH 0HJD 11 V LS090H;V, LS120H;V
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. 'R QRW WKURZ DZD\, GHVWUR\, RU ORVH WKLV PDQXDO 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.
6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO SAFETY INSTRUCTIONS 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. Turn the power off at the nearest disconnect before servicing the equipment. Electrical shock can cause physical injury or death. Properly size all circuit breakers or fuses. There is risk of ¿re, electric shock, explosion, physical injury or death.
LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO SAFETY INSTRUCTIONS OPERATION Do not operate the disconnect switch with wet hands. 'R QRW SURYLGH SRZHU WR RU RSHUDWH WKH XQLW LI LW LV ÀRRGed or submerged. There is risk of ¿re, electric shock, physical injury or death. Use a dedicated power source for this product. There is risk of ¿re, electric shock, physical injury or death. There is risk of ¿re, electric shock, physical injury or death.
TABLE OF CONTENTS Safety Instructions ................................................................................ 3 General Data .......................................................................................... 8 Unit Nomenclature ............................................................................... 8 Single =one High Ef¿ciency Unit Speci¿cations .................................. 9 Single =one Standard Unit Speci¿cations .........................................
GENERAL DATA 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO 8QLW 1RPHQFODWXUH Single Zone Wall Mount Indoor and Outdoor Units LS N 091 HSV Family LS= High Efficiency Wall Mount / Standard/ / Extended Pipe / Mega Type N = Indoor Wall Mount Unit U = Outdoor Heat Pump Unit Nominal Capacity (Nominal cooling capacity in Btu/h) 090/091 = 9,000 120/121 = 12,000 180/181 = 18,000 240 = 24,000 300/307 = 30,000 360 = 36,000 Indoor/Outdoor Product HSV = High Efficienc
GENERAL DATA SLQJOH =RQH HLJK EI¿FLHQF\ 8QLW SSHFL¿FDWLRQV Table 1: Single =one High Ef¿ciency Unit Speci¿cations Type System Model Number (IDU/ODU) 6LQJOH =RQH +LJK (IÀFLHQF\ 8QLWV LS121HSV3 LS181HSV3 (LSN121HSV3/ (LSN181HSV3/ LSU121HSV3) LSU181HSV3) 11,200 18,200 0.89 1.4 13,300 22,000 1.0 1.7 3.90 3.66 12.5 12.6 21.5 20.5 11.0 9.7 208-230/60/1 LS240HSV3 (LSN240HSV3/ LSU240HSV3) 22,000 1.7 27,600 2.3 3.4 12.5 20.0 10.
GENERAL DATA 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO SLQJOH =RQH SWDQGDUG 8QLW SSHFL¿FDWLRQV Table 2: Single =one Standard Unit Speci¿cations Type System Model Number (IDU/ODU) Nominal Cooling Capacity (Btu/h) Cooling Power Input1 (kW) Nominal Heating Capacity (Btu/h)1 Heating Power Input1 (kW) COP EER SEER HSPF Power Supply (V/Hz/Ø) Outdoor Unit Operating Range Cooling (°F DB) Heating (°F WB) Indoor Unit Operating Range Cooling (°F) Heating (°F) Unit D
GENERAL DATA SLQJOH =RQH E[WHQGHG 3LSH 8QLW SSHFL¿FDWLRQV Table 3: Single =one Extended Pipe Unit Speci¿cations Type System Model Number (IDU/ODU) Single Zone Extended Pipe Units LS300HLV LS360HLV (LSN300HLV/LSU300HLV) (LSN360HLV/LSU360HLV) 30,000 33,000 3.0 4.0 32,000 35,200 3.1 3.8 3.03 2.69 10.0 8.2 18.5 16.
GENERAL DATA 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO SLQJOH =RQH 0HJD 8QLW HEV SSHFL¿FDWLRQV Table 4: Single =one Mega Unit (HEV) Speci¿cations Type System (Model IDU/ODU) Nominal Cooling Capacity (Btu/h) Cooling Power Input1 (kW) Nominal Heating Capacity (Btu/h) Heating Power Input1 (kW) COP EER SEER HSPF Power Supply (V / Hz / Ø) ODU Operating Range Cooling (°F DB) Heating (°F WB) IDU Operating Range Cooling (°F WB) Heating (°F DB) Indoor Temperature S
GENERAL DATA SLQJOH =RQH 0HJD 8QLW HEV1 SSHFL¿FDWLRQV Table 5: Single =one Mega Unit (HEV1) Speci¿cations Type System (Model IDU/ODU) Single Zone Mega (HEV1) Inverter LS120HEV1 LS180HEV1 (LSN120HEV1/ (LSN180HEV1/ LSU120HEV1) LSU180HEV1) 12,000 17,000 1.14 1.55 12,000 19,000 0.98 1.59 12.24 11.95 10.52 10.97 17.0 18.0 9.2 9.0 208-230/60/1 LS240HEV1 (LSN240HEV1/ LSU240HEV1) 22,000 2.045 22,000 1.935 11.37 10.76 17.0 9.
GENERAL DATA 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO SLQJOH =RQH 0HJD115V 8QLW SSHFL¿FDWLRQV Table 6: Single =one Mega 115V Unit Speci¿cations Type System (Model IDU/ODU) Nominal Cooling Capacity (Btu/h) Cooling Power Input1 (kW) Nominal Heating Capacity (Btu/h) Heating Power Input1 (kW) COP EER SEER HSPF Power Supply (V / Hz / Ø) ODU Operating Range Cooling (°F DB) Heating (°F WB) IDU Operating Range Cooling (°F WB) Heating (°F DB) Indoor Temperature Se
GENERAL DATA EOHFWULFDO Table 7: Single =one High Ef¿ciency Indoor Unit Electrical Data Model Number Nom. Tons LSU091HSV3 LSU121HSV3 LSU181HSV3 LSU240HSV3 3/4 1 1-1/2 1-3/4 Compressor Compressor (A) Qty Cool/Heat 1 8.7/8.7 1 8.7/8.7 1 15.4/15.4 1 15.4/15.4 Fan Qty ODU Fan (A) IDU Fan (A) MCA (A) MOP (A) 1 1 1 1 0.40 0.40 0.25 0.25 0.4 0.4 0.4 0.5 10 10 19 19 15 15 25 25 MCA (A) MOP (A) Table 8: Single Zone Standard Indoor Unit Electrical Data Model Number Nom.
GENERAL DATA 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO R410A Refrigerant R410A Refrigerant R410A refrigerant has a higher operating pressure in comparison to R22 refrigerant and, therefore, all piping system materials installed must have a higher resisting pressure than the materials traditionally used in R22 systems. R410A refrigerant is an azeotrope of R32 and R125, mixed at 50:50, so the ozone depletion potential (ODP) is 0.
GENERAL INSTALLATION GUIDELINES Location Selection Selecting the Best Location DANGER • To avoid the possibility of fire, do not install the unit in an area where combustible gas may generate, flow, stagnate, or leak. • 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. • Do not use the unit in environments where oil, steam, or sulfuric gas are present as it can cause bodily injury or death.
GENERAL INSTALLATION GUIDELINES 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Oceanside Applications Oceanside Applications Figure 1: Oceanside Placement Using Windbreak Use of a Windbreak to Shield from Sea Wind Ocean winds may cause corrosion, particularly on the condenser and evaporator ¿ns, which, in turn could cause product malfunction or inef¿cient performance. • Avoid installing the outdoor unit where it would be directly exposed to ocean winds.
GENERAL INSTALLATION GUIDELINES Mounting Bolt Location Figure 3: Outdoor Unit Mounting Methods General Mounting Securely attach the outdoor unit to a condenser pad, base rails, or another mounting platform that is securely anchored to the ground or building structure. Attach the outdoor unit with a bolt and nut on a concrete or rigid mount. See Figure 3. Follow applicable local codes for clearance, mounting, anchor and vibration attenuation requirements. All referenced materials are to be ¿eld-supplied.
GENERAL INSTALLATION GUIDELINES 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Required Clearances Figure 4: Outdoor Unit Clearances Figure 5: Outdoor Unit Sunroof/Awning Clearances 24 More than 12 Sun roo f 12 12 Fe obsnce or tacl es 28 More than 12 More than 24 More than Unit: Inch 28 24 Unit: Inch Do not place the unit where animals and/or plants will be in the path of the warm air, or where the warm air and/or noise will disturb neighbors.
GENERAL INSTALLATION GUIDELINES Mounting of Indoor Unit Installation Plate Mounting Installation Plate to Wall (091HSV3, 121HSV3, 181HSV3) Ø2-9/16 Ø2-9/16 Ø65 Installation Plate 4-7/8 6-15/16 A Type B Type A Type : 3-3/4 B Type : 6-3/4 8-9/16 (Unit: Inch) Figure 10: Installation Plate Screws Select location carefully. Unit should be anchored to a strong wall to prevent unnecessary vibration.
GENERAL INSTALLATION GUIDELINES Mounting Installation Plate to Wall (240HSV3, HV3, HLV) Follow the procedure and best practices when mounting the indoor unit’s plate to a wall. Figure 13: Installation Plate - Mounting Procedure 1. Mount the installation plate horizontally by aligning the centerline using a leveling tool (Figure 13). 2. Use type “A” screws when mounting the plating (these screws come with the plate). • If mounting the unit on concrete wall, use field supplied anchor bolts. 3.
GENERAL INSTALLATION GUIDELINES Mounting of Indoor Unit Installation Plate Mounting Installation Plate to Wall (Mega 090HEV, 090HEV1, 120HEV, 120HEV1) 1. Confirm the position of screws between chassis and installation plate (Figure 16 and Figure 17). 2. Mount the installation plate horizontally by aligning the centerline using a leveling tool (Figure 18 and Figure 19). 3. Use provided screws when mounting the plating. • If mounting the unit on concrete wall, use field supplied anchor bolts. 4.
GENERAL INSTALLATION GUIDELINES 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Mounting of Indoor Unit Installation Plate Mounting Installation Plate to Wall (Mega 180HEV, 180HEV1, 240HEV, 240HEV1) 1. Confirm the position of screws between chassis and installation plate (Figures 20 and 23). 2. Mount the installation plate horizontally by aligning the centerline using a leveling tool (Figures 21 and 22). 3. Use provided screws when mounting the plating.
GENERAL INSTALLATION GUIDELINES Mounting of Indoor Unit Installation Plate Mounting Installation Plate to Wall (Mega 115V - HXV Models) Follow the procedure and best practices when mounting the indoor unit’s plate to a wall. Figure 24: Installation Plate - Mounting Mega 115V Installation Plate Procedure 1. Mount the installation plate horizontally by aligning the centerline using a leveling tool (Figure 24). 2. Use type “A” screws when mounting the plating (these screws come with the plate).
GENERAL INSTALLATION GUIDELINES 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Mounting of Indoor Unit Mounting the Indoor Unit to the Installation Plate 1. Hook the indoor unit onto the upper portion of the installation plate ([1] Figure 26). 2. Engage the hooks at the top of the indoor unit with the upper edge of the installation plate. • Ensure that the hooks are properly seated on the installation plate by moving it left and right. 3.
GENERAL INSTALLATION GUIDELINES Piping Preparation Piping Preparation • Do not allow the refrigerant to leak during brazing; if the refrigerant combusts, it generates a toxic gas which can cause physical injury or death. • Do not braze in an enclosed location, and always test for gas leaks before / after brazing. Gas leaks can cause physical injury or death. • After brazing, check for refrigerant gas leaks. Refrigerant gas leaks can cause physical injury or death. Single Zone Pipe Connections 1.
GENERAL INSTALLATION GUIDELINES 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Piping Preparation / Piping Materials and Handling Tightening the Flare Nuts Table 15: Tightening Torque for Flare Nuts. Pipe size (Inches O.D.) Tightening torque (ft-lbs) 1/4Ø 13.9 - 18 3/8Ø 24.5 - 30.3 1/2Ø 39.7 - 47.7 5/8Ø 45.5 - 59.2 1. 2. 3. 4.
GENERAL INSTALLATION GUIDELINES Piping Materials and Handling Figure 33: Refrigerant Pipe Brazing. Brazing Practices Refrigerant Piping Keep the piping system free of contaminants and debris such as copper burrs, slag, or carbon dust during installation. Contaminants can result in mechanical failure of the system.
GENERAL INSTALLATION GUIDELINES 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Piping Materials and Handling Selecting Field-Supplied Copper Tubing Copper is the only approved refrigerant pipe material for use with Single Zone systems products, and LG recommends seamless phosphorous deoxidized ACR type copper pipe, hard-drawn rigid type “K” or “L”, or annealed-tempered, copper pipe.
GENERAL INSTALLATION GUIDELINES Piping Materials and Handling No Pipe Size Substitutions Use only the pipe size recommended by this installation manual. Using a different size is prohibited and may result in a system malfunction or failure to work at all. Figure 34: Installing Piping Above and Below an Obstacle. Obstacles 3X Above Ab an obstacle. b l Below an obstacle.
GENERAL INSTALLATION GUIDELINES 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Piping Materials and Handling See table below for precalculated anticipated expansion for various pipe sizes and lengths of refrigerant tubing. To find the anticipated expansion value: 1. From the table below, find the row corresponding with the actual feet of the straight pipe segment. 2. Estimate the minimum and maximum temperature of the pipe. 3.
GENERAL INSTALLATION GUIDELINES Piping Materials and Handling Pipe Bends When bending soft copper, use long radius bends. Refer to the “Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets” table for minimum radius specifications, as shown on previous page.
GENERAL INSTALLATION GUIDELINES 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Piping Support, Elbow Usage Pipe Supports, continued. A properly installed pipe system will have sufficient supports to avoid pipes from sagging during the life of the system. As necessary, place supports closer for segments where potential sagging could occur. Maximum spacing of pipe supports shall meet local codes.
GENERAL INSTALLATION GUIDELINES Refrigerant Piping System Layout Underground Refrigerant Piping Refrigerant pipe installed underground should be routed inside a vapor tight protective sleeve to prevent insulation deterioration and water infiltration. Refrigerant pipe installed inside underground casing must be continuous without any joints. Underground refrigerant pipe must be located at a level below the frost line. Figure 39: Typical Arrangement of Refrigerant Pipe and Cable(s) in a Utility Conduit.
REFRIGERANT PIPING CONNECTIONS 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Refrigerant Piping System Limitations Connection Limitations Single zone systems consist of one outdoor unit and one indoor unit. One of the most critical elements of a single zone system is the refrigerant piping. Tables 25 to 28 list pipe length limits that must be followed in the design of a Single Zone Wall Mount refrigerant pipe system.
REFRIGERANT PIPING CONNECTIONS Refrigerant Piping System Limitations Connection Limitations - Continued Table 27: Single Zone Extended Pipe Refrigerant Piping System Limitations Pipe Length (ELF = Equivalent Length of pipe in Feet) Longest total equivalent piping length Shortest total equivalent piping length Distance between fittings and indoor units or outdoor units If outdoor unit is above indoor unit Elevation (All Elevation Limitations are If outdoor unit is below indoor unit Measured in Actual Feet
REFRIGERANT PIPING CONNECTIONS 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Installation Overview Figure 41: Installation and Piping Connection Overview Installation Installation Overview Single Zone Wall-Mounted systems are one-to-one systems. There is a direct piping connection between the outdoor unit and the indoor unit. Figure 41 Illustrates the basic pipe connections between the outdoor and indoor unit.
REFRIGERANT PIPING CONNECTIONS Directional Pipe Formation Pipe Bundling Figure 43: Cutaway of Proper Pipe and Cable Bundling See Figure 43 for proper pipe and cable bundling. Note the placement of the piping along with the necessary insulation material. 1. Be sure to wrap each pipe with proper insulation material. 2. Secure the piping by wrapping vinyl tape around the pipe. • Use the narrow size tape for wrapping the actual pipe. 3.
REFRIGERANT PIPING CONNECTIONS 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Drain Hose Indoor Unit Drain Hose Guidelines Refer to the diagrams below and follow proper installation and the running of the drain hose along the pipe installation line to avoid leakage. Once drain hose is set in place, always follow with evacuation and leakage testing of all piping to be sure all piping is properly sealed. Re-check and retest as necessary.
REFRIGERANT PIPING CONNECTIONS Outdoor Unit Connections Single Zone Wall Mount Outdoor Unit Connections (HSV3, HV3, HLV) Figure 54: Outdoor Unit Piping Connection (HSV3) Outdoor Unit Figure 56: Pipe Attachment Figure 53: Outdoor Unit Connection Cover Removal (HV3, HLV) Terminal Block Conduit Cover Tubing Cover Figure 55: Outdoor Unit Piping Connection (HV3, HLV) Outdoor Unit Liquid Piping (Smaller diameter) Gas Piping (Larger diameter) Liquid Piping (Smaller diameter) Torque Wrench Bracket for M
REFRIGERANT PIPING CONNECTIONS 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Outdoor Unit Connections Single Zone Wall Mount Outdoor Unit Connections (090HEV, 090HEV1, 120HEV, 120HEV1, 240HEV, 240HEV1, 090HXV, 120HXV) 1. 2. 3. 4. Remove the tubing cover by loosening the fastening screws (Figures 57 to 59). Align the center of the refrigerant pipe and corresponding connection as shown in Figure 60.
REFRIGERANT PIPING CONNECTIONS Indoor Unit Connections Piping to Indoor Unit (HSV3, HLV, HXV, HEV, HEV1) Follow the steps below and refer to the illustrations on this page to connect piping to the Single Zone indoor unit. To see specific bundling of piping and drain hose, see Section, “Bundling and Cutting Line” on page 45. Also, refer back to “Drain Hose Guidelines” section for proper drainage slope during piping procedure. 1. Pull the screw cap(s) at the bottom of the indoor unit (Figure 64). 2.
REFRIGERANT PIPING CONNECTIONS 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Indoor Unit Connections - Conduit Bracket Placement Piping to Indoor Unit - Conduit Bracket Placement (HV3, HEV, HEV1) 1. Follow steps 1 through 6 on the previous page to connect piping to the rear of the indoor unit. Most HV3, HEV, HEV1 and HXV single-zone models require an additional conduit “bracket/nut” to be installed at the rear of the indoor unit to secure an elbow conduit.
REFRIGERANT PIPING CONNECTIONS Bundling and Cutting Line Piping and cabling must be insulated and bundled together correctly for safety and usage. Follow proper methods and procedures as outlined here and on the next pages to ensure installation and piping are correctly installed. As shown in Figure 71, the indoor unit pipe are fully encased in insulation material. 1. Bind together the two pipes, using vinyl tape. Make sure there are no gaps during the binding. 2.
REFRIGERANT PIPING CONNECTIONS 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Refrigerant Piping Insulation Refrigerant Piping System Insulation All refrigerant piping from the outdoor unit to the indoor units must be insulated correctly for safety and usage.
REFRIGERANT PIPING CONNECTIONS Refrigerant Piping Insulation Minimum Refrigerant Pipe Ethylene Propylene Diene Methylene (EPDM) Insulation Wall Thickness Requirements Follow locals codes when selecting EPDM insulation wall thickness. Non-air conditioned location 3. Typical location 4. Special location 1/2 inch 1/2 inch 1/2 inch 1/2 inch 3/4 inch 1 inch 1 inch 1. Typical location (Air-conditioned location): When the piping passes through an indoor area where the indoor unit operates.
REFRIGERANT PIPING CONNECTIONS 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Pipe Sleeves at Penetrations Pipe Sleeves at Penetrations 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.
REFRIGERANT PIPING CONNECTIONS Air Purging Air Purging Best Practices Air purging is done to the piping system after all piping has been connected between the indoor and outdoor unit. This step is necessary to be sure that refrigerant can flow through the system without danger of leakage or pressure issues. Air and moisture that is left in the piping can lead to undesirable results and can cause damage to the working unit.
REFRIGERANT PIPING CONNECTIONS 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Leak Test/Soap Method Check Leak Test Perform the leak test by pressurizing nitrogen gas to 550 psi on both the liquid and gas pipes. Test with the piping service valves closed. If the pressure does not drop for twenty-four (24) hours, the system passes the test. If the pressure drops, there is a nitrogen leak in the system. Find the leak, repair, and then test again.
REFRIGERANT PIPING CONNECTIONS Evacuation of Lines Finishing Up Evacuation After successful leak testing has been performed, follow Evacuation procedure. Follow the same steps for charge hose hookup to the system. See Figure 82 on previous page for proper hookup. 4. Turn off the pump and leave the connections secured to the two Procedure service valves. 1. Confirm that the “Lo” knob of the manifold valve is open. Refer 5. Wait 5 minutes. back to Figure 82. 6.
REFRIGERANT PIPING CONNECTIONS 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Pump Down, Cooling Only Mode Never air purge with refrigerant as it can lead to refrigerant leakage which can cause bodily harm and injury, especially if inhaled. Use a vacuum pump that can evacuate down to 500 microns. 1. If moisture remains in the piping after the system is evacuated for two (2) hours, break the vacuum (down to 7.5 psi with nitrogen gas). 2.
ELECTRICAL WIRING General Information and Safety Guidelines • Consider ambient conditions (temperature, direct sunlight, inclement weather, etc.) when selecting, installing, and connecting the power wiring. • Properly ground the Single Zone outdoor and indoor unit. Improperly ground wire can cause communication problems from electrical noise, and motor current leakage. Ground wiring must always be installed by a quali¿ed technician.
ELECTRICAL WIRING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Power :iring Speci¿cations and Best Practices Connecting the Power Wiring Guidelines Best practice dictates using ring or spade terminals to terminate power wiring at the power terminal block (Figure 85). If ring terminals or spade clips are not available, then: Do not terminate different gauge wires to the power terminal block. Slack in the wiring may generate heat and ¿re.
ELECTRICAL WIRING Power :iring Speci¿cations and Best Practices General Communication Cable Specifications • For power / communication wires between the Single Zone outdoor unit and the indoor unit, use a four (4) conductor, stranded, shielded or unshielded wire. If shielded, the wire must be grounded to the chassis at the outdoor unit only. • Minimum 18 gauge CVVS or CPEVS cable. • Insulation material as required by local code. • Rated for continuous exposure of temperatures up to 140°F.
ELECTRICAL WIRING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Indoor Unit Electrical Connections Overview - Connecting Indoor Unit Electrical Wiring The general guidelines for connecting electrical and communication cables to the indoor unit are the same for each of the Single Zone Wall Mounted indoor units, however, the actual connections on the terminal block will differ.
ELECTRICAL WIRING Indoor Unit Electrical Connections Connecting Indoor Unit Electrical Wiring - Continued 5. When done, reattach the bottom panel to the indoor unit, being careful to align panel using the rear tabs. • You might need to give the panel a gentle tap with the palm of your hand to be sure it engages at the bottom. 6. Using a phillips screwdriver, reattach the screws to the bottom panel and secure. 7. Once screws are in place, re-snap the latches over the screws.
ELECTRICAL WIRING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Indoor Unit Electrical Connections Terminal Block Connection for HV3 See Figure 93 for specific terminal block wiring for all following Single Zone models: Figure 93: HV3 and 240HSV3 Indoor Units - Terminal Block Connections Control Cover LSN307HV3 LSN360HV3 Knockout Cover Terminal Block Connection for 240HSV3 See Figure 93 for 240HSV3 Single Zone terminal block connection.
ELECTRICAL WIRING Indoor Unit Electrical Connections Terminal Block Connection for Mega 090HEV, 090HEV1, 120HEV, 180HEV, 240HEV Figure 95: Mega 090HEV, 090HEV1, 120HEV, 180HEV, 240HEV Indoor Units - Terminal Block Connections Control Cover See Figure 95 for specific terminal block wiring for the following Single Zone models: LSN090HEV LSN090HEV1 LSN120HEV LSN180HEV LSN240HEV 1(L1) 2(L2) Electrical Wiring 1(L1) 2(L2) 3 3 Terminal Block Power connecting cable Terminal Block Connection for Mega 120H
ELECTRICAL WIRING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Indoor Unit Electrical Connections Terminal Block Connection for Mega 180HEV1, 240HEV1 Figure 97: Mega 180HEV1, 240HEV1 Indoor Units - Terminal Block Connections Control Cover 1(L1) 2(L2) 3 See Figure 97 for specific terminal block wiring for the following Single Zone models: LSN180HEV1 LSN240HEV1 1(L1) 2(L2) 3 Power connecting cable Terminal Block Connection for Mega 115V 090HXV, 120HXV
ELECTRICAL WIRING Outdoor Unit Electrical Connections Connecting Outdoor Unit Electrical Wiring The general guidelines for connecting electrical and communication cables to the outdoor unit are the same for each of the Single Zone Wall Mount units, however, the actual connections on the terminal block will differ. See each illustration for the Single Zone unit model that you are installing for correct wiring of each terminal block.
ELECTRICAL WIRING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Outdoor Unit Electrical Connections Terminal Block Connection for HV3 See Figure 101 for specific terminal block wiring for all following Single Zone outdoor unit models: Figure 101: HV3 and 181HSV3, 240HSV3 Outdoor Unit - Electrical Connections LSU307HV3 LSU360HV3 Terminal Block Connections for 181HSV3 and 240HSV3 See Figure 101 for 181HSV3 and 240HSV3 Single Zone terminal block connections.
ELECTRICAL WIRING Outdoor Unit Electrical Connections Terminal Block Connection for 090HEV, 090HEV1, 120HEV, 120HEV1 Figure 103: 090HEV, 090HEV1, 120HEV, 120HEV1 Outdoor Unit Electrical Connections 1(L1) 2(L2 ) 1(L1) 2(L2 ) 3 See Figure 103 for specific terminal block wiring for all following Single Zone outdoor unit models: Terminal block LSU090HEV LSU090HEV1 LSU120HEV LSU120HEV1 Cord clamp Outdoor Unit Power cord Power connecting cable Conduit panel cover Electrical Wiring Tubing cove r Termi
ELECTRICAL WIRING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Outdoor Unit Electrical Connections Terminal Block Connection for 180HEV1 Figure 105: 180HEV1 Outdoor Unit - Electrical Connections 1(L1) 2(L2) 1(L1) 2(L2) See Figure 105 for specific terminal block wiring for all following Single Zone outdoor unit models: LSU180HEV1 3 1(L1) 2(L2) 1(L1) 2(L2) 3 Terminal block Over 0.
ELECTRICAL WIRING Outdoor Unit Electrical Connections Terminal Block Connection for 240HEV1 Figure 107: 240HEV1 Outdoor Unit - Electrical Connections 1(L1) 2(L2) 1(L1) 2(L2) 3 See Figure 107 for specific terminal block wiring for the following Single Zone outdoor unit model: LSU240HEV1 Outdoor unit Terminal block Over 0.
ELECTRICAL WIRING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Self Diagnosis Functions LG Monitoring View (LGMV) Diagnostic Software LGMV software (PRCTSL1 and PRCTFE1) allows the service technician or commissioning agent to connect a computer USB port to the Single Zone system’s main printed circuit board (PCB) using an accessory cable without the need for a separate interface device.
ELECTRICAL WIRING Self Diagnosis Functions LG Monitoring View (LGMV) Diagnostic Software and Cable - Continued Figure 111: MV Control Indoor Units Screen 5. Data (Figure 111) • Data Saving Start: Recording of real time data to a separate file created to be stored on the user’s computer. • Data Loading Start: Recorded data from a saved “.CSV” file can be loaded to create an LGMV session. 6.
ELECTRICAL WIRING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO 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 functions only with LG Duct Free products (Figure 113). SIMs can display and graph operational data for the air conditioner system including the indoor unit and the outdoor unit.
ELECTRICAL WIRING LG SIMS - Self Diagnosis Functions SIMs App Screens 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 Displays the following information: • Frequency • Operation • THM Mode • REM Mode • FAN • EEV • Air Temp • Pipe-in •
TROUBLESHOOTING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Error Codes Troubleshooting Using Error Codes Refer to Table 35 and Table 36 for error codes that are generated from the indoor and outdoor units. These codes are the most common that will manifest through these units. Your particular model duct free system might generate additional codes not listed here.
TROUBLESHOOTING Error Codes Troubleshooting Using Error Codes - Continued Table 35: Single Zone Wall Mounted Indoor Unit Error Codes - Continued Description 21 22 23 25 26 27 28 29 31 32 40 41 44 45 46 48 53 60 61 62 63 65 67 DC Peak (IPM Fault); Compressor DC voltage was too high Current Transformer2 (CT2) error; Alternating current (AC) input too high DC Link Low Volt AC Low/High Volt DC Comp Position Error (not providing rotation), Locking PSC Fault; Current to inverter compressor between AC and DC c
TROUBLESHOOTING 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO Error Codes Single Zone Wall Mounted Outdoor Unit Error Codes 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 Refrigerant Leaks Cautions for Refrigerant Leaks / Introduction 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.
INSTALLATION CHECKLIST 6LQJOH =RQH +LJK (I¿FLHQF\ 6WDQGDUG ([WHQGHG 3LSH DQG 0HJD :DOO 0RXQW ,QVWDOODWLRQ 0DQXDO PAGE 1 Major Component Rough-In Description Check Single Zone 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.
INSTALLATION CHECKLIST PAGE 2 Condensate Pump / Drain Installation Power Wire and Communications Cables Description Check Power wiring was connected to a single phase 208-230V source or 115V (Mega 115 HXV models only). Ground wire was installed and properly terminated at the unit. The power supplied was clean with voltage fluctuations within specifications. (±10% of nameplate). Power wiring to the Single Zone outdoor unit was installed per all local electrical code requirements.
20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. Commercial Air Conditioning Division 4300 North Point Parkway Alpharetta, Georgia 30022 www.lg-vrf.com LG Customer Information Center, Commercial Products 1-888-865-3026 USA Follow the prompts for commercial A/C products. IM_WallMounted_All_11_15 Supersedes IM_WallMounted_All_08_15 IM-WallMounted-All-08-14.
