LG LS090HEV Installation Manual Download Page 1

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Single Zone HigH efficiency, Standard,

extended PiPe, and Mega Wall Mounted

inStallation Manual

Single Zone High Efficiency:

LS091HSV3, LS121HSV3, LS181HSV3, LS240HSV3

Single Zone Standard: LS307HV3, LS360HV3
Single Zone Extended Pipe: LS240HLV, LS300HLV, LS360HLV
Single Zone Mega: LS090HEV, LS120HEV, LS180HEV, LS240HEV
Single Zone Mega 115V: LS090HXV, LS120HXV

Summary of Contents for LS090HEV

Page 1: ... Installation Manual Single Zone High Efficiency LS091HSV3 LS121HSV3 LS181HSV3 LS240HSV3 Single Zone Standard LS307HV3 LS360HV3 Single Zone Extended Pipe LS240HLV LS300HLV LS360HLV Single Zone Mega LS090HEV LS120HEV LS180HEV LS240HEV Single Zone Mega 115V LS090HXV LS120HXV ...

Page 2: ...ecautions begins on page 3 For more technical materials such as submittals engineering databooks and catalogs visit www lghvac com For continual product development LG Electronics U S A Inc reserves the right to change specifications without notice LG Electronics U S A Inc This document as well as all reports illustrations data information and other materials are the property of LG Electronics U S...

Page 3: ...ng agent There is a risk of equipment damage refrigerant contamination refriger ant loss physical injury or death Be very careful when transporting the product Do not attempt to carry the product without assistance Some products use polypropylene bands for packaging Do not use polypropylene bands to lift the unit Suspend the unit from the base at specified positions Support the unit a minimum of f...

Page 4: ...e condenser and evaporator fins which in turn could cause product malfunction or inef ficient performance When installing the unit in a low lying area or a location that is not level use a raised concrete pad or concrete blocks to provide a solid level foundation This may prevent water damage and reduce abnormal vibration Properly insulate all cold surfaces to prevent sweating Cold surfaces such a...

Page 5: ...try qualified experienced certified electrician familiar with the U S National Electric Code NEC who is equipped with the proper tools and test instruments Failure to carefully read and follow all instructions in this manual can result in equipment malfunction property damage personal injury or death All electric work must be performed by a licensed electrician and conform to local building codes ...

Page 6: ... away from moving parts The rotating hot cold and high voltage parts of the unit can cause physical injury or death Periodically check power cord and plug for damage Cord must be replaced by the manufacturer its service agent or similar qualified persons in order to avoid physical injury and or electric shock Do not open the inlet grille of the unit during operation Do not operate the unit with th...

Page 7: ... Unit 32 Piping Preparation 33 Piping Materials and Handling 35 39 Piping Support Elbow Usage 40 Refrigerant Piping System Layout 41 Refrigerant Piping Connections 42 Refrigerant Piping System Limitations 42 Installation Overview 44 Directional Pipe Formation 45 Drain Hose 46 Outdoor Unit Connections 47 51 Indoor Unit Connections 52 Indoor Unit Connections Conduit Bracket Placement 53 Bundling and...

Page 8: ...trademark of LG Corp General Data Single Zone Wall Mount Indoor and Outdoor Units LS N 091 HSV 3 Generation 3 Third Indoor Outdoor Product HSV High Efficiency HV Standard HLV Extended Pipe HEV Mega HXV Mega 115V 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 Type N Indoor Wall Mount Unit U Outdoor Heat Pump Unit F...

Page 9: ...ary 1 Fan IDU Type Qty Cross Flow 1 ODU Type Qty Propeller 1 Motor Drive Brushless Digitally Controlled Direct Airflow Rate IDU Max H M L CFM 388 335 272 212 423 353 272 212 735 622 509 399 883 742 629 424 ODU Max CFM 1 165 1 165 2 119 2 119 Table 1 Single Zone High Efficiency Unit Specifications EEV Electronic Expansion Valve IDU Indoor Unit ODU Outdoor Unit 1 Power Input is rated at high speed 2...

Page 10: ...iping Length6 no add l refrigerant ft 41 0 41 0 24 6 24 6 Max Elevation Difference ft 32 8 32 8 49 2 49 2 Table 1 Single Zone High Efficiency Unit Specifications Continued EEV Electronic Expansion Valve IDU Indoor Unit ODU Outdoor Unit 6 Piping lengths are equivalent Power wiring is field supplied and must comply with the applicable local and national codes This unit comes with a dry helium charge...

Page 11: ... 1 Twin Rotary 1 Fan IDU Type Qty Cross Flow Cross Flow ODU Type Qty Propeller Propeller Motor Drive Brushless Digitally Controlled Direct Airflow Rate IDU Max H M L CFM 883 770 629 424 883 795 629 424 ODU Max CFM 2 119 2 119 EEV Electronic Expansion Valve IDU Indoor Unit ODU Outdoor Unit 1 Power Input is rated at high speed 2 Take appropriate actions at the end of HVAC equipment life to recover r...

Page 12: ...x Elevation Difference ft 49 2 49 2 Table 2 Single Zone Standard Unit Specifications Continued EEV Electronic Expansion Valve IDU Indoor Unit ODU Outdoor Unit 5 Piping lengths are equivalent Power wiring is field supplied and must comply with the applicable local and national codes This unit comes with a dry helium charge This data is rated 0 ft above sea level with 24 6 of refrigerant line per in...

Page 13: ...r Motor Drive Brushless Digitally Controlled Direct Airflow Rate IDU Max H M L CFM 848 706 530 459 848 706 530 459 848 706 530 459 ODU Max CFM 2 119 2 119 2 119 Table 3 Single Zone Extended Pipe Unit Specifications EEV Electronic Expansion Valve IDU Indoor Unit ODU Outdoor Unit 1 Power Input is rated at high speed 2 Take appropriate actions at the end of HVAC equipment life to recover recycle recl...

Page 14: ...rant ft 24 6 24 6 24 6 Max Elevation Difference ft 98 4 98 4 98 4 Table 3 Single Zone Extended Pipe Unit Specifications Continued EEV Electronic Expansion Valve IDU Indoor Unit ODU Outdoor Unit 5 Piping lengths are equivalent Power wiring is field supplied and must comply with the applicable local and national codes This unit comes with a dry helium charge This data is rated 0 ft above sea level w...

Page 15: ...pply V Hz Ø 208 230 60 1 ODU Operating Range Cooling F DB 64 118 Heating F WB 23 75 IDU Operating Range Cooling F WB 64 90 Heating F DB 60 86 Indoor Temperature Setting Range Cooling F 65 86 Heating F 61 86 Unit Data Refrigerant Type2 R410A Refrigerant Control Capillary Tube IDU Sound Pressure3 3 dB A H M L 39 33 25 39 33 25 ODU Sound Pressure 3 dB A 47 47 Indoor Unit Net Shipping Weight lbs 16 21...

Page 16: ...d with air entering the indoor unit at 70ºF dry bulb DB and 60ºF wet bulb WB and outdoor ambient conditions of 47ºF dry bulb DB and 43ºF wet bulb WB 1 Power Input is rated at high speed 2 Take appropriate actions at the end of HVAC equipment life to recover recycle reclaim or destroy R410A refrigerant according to applicable regulations 40 CFR Part 82 Subpart F under section 608 of CAA 3 Sound Pre...

Page 17: ...R 10 95 10 75 SEER 17 0 17 0 HSPF 8 7 8 5 Power Supply V Hz Ø 208 230 60 1 ODU Operating Range Cooling F DB 64 118 Heating F WB 23 75 IDU Operating Range Cooling F WB 64 90 Heating F DB 60 86 Indoor Temperature Setting Range Cooling F 65 86 Heating F 61 86 Unit Data Refrigerant Type2 R410A Refrigerant Control Capillary Tube IDU Sound Pressure3 3 dB A H M L 42 40 35 45 40 35 ODU Sound Pressure 3 dB...

Page 18: ... 6 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units All capacities are net with a combination ratio between 95 105 Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb DB and 67ºF wet bulb WB and outdoor ambient conditions of 95ºF dry bulb DB and 75ºF wet bulb WB Heating capacity rating obtained with air entering the...

Page 19: ...er Supply V Hz Ø 115 60 1 ODU Operating Range Cooling F DB 14 118 Heating F WB 14 75 IDU Operating Range Cooling F WB 64 90 Heating F DB 60 86 Indoor Temperature Setting Range Cooling F 65 86 Heating F 61 86 Unit Data Refrigerant Type2 R410A Refrigerant Control EEV IDU Sound Pressure3 3 dB A H M L 39 33 25 39 33 25 ODU Sound Pressure 3 dB A 47 47 Indoor Unit Net Shipping Weight lbs 23 26 23 26 Out...

Page 20: ...ity rating obtained with air entering the indoor unit at 70ºF dry bulb DB and 60ºF wet bulb WB and outdoor ambient conditions of 47ºF dry bulb DB and 43ºF wet bulb WB 1 Power Input is rated at high speed 2 Take appropriate actions at the end of HVAC equipment life to recover recycle reclaim or destroy R410A refrigerant according to applicable regulations 40 CFR Part 82 Subpart F under section 608 ...

Page 21: ...IDU Fan A MCA A MOP A LSU240HLV 1 3 4 1 17 3 17 3 1 0 25 0 5 23 35 LSU300HLV 2 1 2 1 17 3 17 3 1 0 25 0 5 23 35 LSU360HLV 2 3 4 1 17 3 17 3 1 0 25 0 5 23 35 Table 8 Single Zone Extended Pipe Indoor Unit Electrical Data Electrical Unit Model Nos Nom Tons Compressor Qty Compressor A Cool Heat Fan Qty ODU Fan A IDU Fan A MCA A MOP A LSU090HEV 3 4 1 6 8 6 8 1 0 5 0 5 9 15 LSU120HEV 1 1 6 8 6 8 1 0 5 0...

Page 22: ...d in its gaseous state its composition changes and the system will not work properly 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...

Page 23: ...ve any snow that has accumulated 3 15 16 inches or more on the top of the outdoor unit 4 Place the outdoor unit on a raised platform at least 19 11 16 inches higher than the average annual snowfall for the area In environments where there is a possibility of heavy snow the frame height must be more than two 2 times the amount of average annual snowfall and should not exceed the width of the outdoo...

Page 24: ...enough to block any winds Windbreak should be more than 150 of the outdoor unit s height There must be 2ft and 3 1 2 inches clearance between the outdoor unit and the windbreaker for purposes of air flow Additional anti corrosion treatment may need to be applied to the outdoor unit at oceanside locations Ocean winds may cause corrosion particularly on the condenser and evaporator fins which in tur...

Page 25: ...vibration Tie Downs and Wind Restraints The strength of the Duct free Split Single Zone Inverter system frame is adequate to be used with field provided wind restraint tie downs The overall tie down configuration must be approved by a local professional engineer Always refer to local code when design ing a wind restraint system Snow and Ice Conditions In climates that experience snow build up plac...

Page 26: ...e condenser is not restricted around the unit Adhere to all clearance requirements if installing the unit on a roof Be sure to level the unit and ensure that the unit is adequately anchored Consult local codes for rooftop mounting requirements Figure 4 Outdoor Unit Clearances Outdoor Unit Clearance 12 28 24 12 24 Unit inch Do not place the unit where animals and or plants will be in the path of th...

Page 27: ...e be sure to take into consideration routing of wiring for power outlets within the wall Contacting wiring can cause serious bodily injury or death Use caution when drilling holes through the walls for the purposes of piping connections Power wiring can cause serious bodily injury or death Mounting Installation Plate to Wall 091HSV3 121HSV3 181HSV3 Ø2 19 32 4 27 32 3 24 32 Left rear piping Install...

Page 28: ...6 13 3 16 Figure 10 Installation Plate Mounting Figure 11 Installation Plate Mounting Drilling Piping Hole in the Wall Follow the left or right piping clearance recommendations as shown in Figure 11 1 Using a 2 5 8 ø 65mm inch hole core drill bit drill a hole at either the right or left side of the wall mounting Figure 12 The slant of the hole should be 3 16 to 5 16 from level with the slant being...

Page 29: ...nd Figure 16 120HEV Installation Plate Chassis Hook Type A Ø2 19 32 5 23 32 2 30 32 Right rear piping Left rear piping Installation Plate Place a level on raised tab Unit Outline 7 18 32 7 18 32 Unit inch 14 28 32 14 28 32 Ø2 19 32 090HEV Installation Plate Figure 13 Installation Plate Screw Type A 090HEV Figure 15 Installation Plate 090HEV Figure 16 Installation Plate 120HEV Ø2 19 32 Right Rear P...

Page 30: ...r piping clearance when drilling into the wall as shown in Figure 18 Refer to Drilling Piping Hole in the Wall on page 28 as you follow procedure to install plate Unit Inch Ø2 19 32 Ø2 19 32 2 11 16 2 3 16 Right rear piping Left rear piping Installation Plate Measuring Tape Measuring Tape Hanger Place a level on raised tab Unit Outline 8 3 32 4 3 32 18 3 32 22 13 32 180HEV and 240HEV Installation ...

Page 31: ...of Indoor Unit Installation Plate Mounting Installation Plate to Wall Mega 115V HXV Models Installation Plate Chassis Hook Type A Screws Figure 19 Installation Plate Mounting Mega 115V Figure 20 Installation Plate Mega 115V Ø2 19 32 Right Rear Piping Left Rear Piping Installation Plate Place a level on raised tab Unit Inch 9 21 32 5 11 32 16 8 32 18 29 32 Unit Outline Ø2 19 32 4 27 32 7 090HXV 120...

Page 32: ...e bottom of the installation plate Figure 23 Pay attention to the positioning of the piping through any wall as shown in the figure as you insert the screws to the indoor unit Preparing for Piping Electrical Connection 1 To prepare indoor unit for piping disengage bottom on indoor unit from installation plate by reversing step 3 from previous procedure This step will separate the indoor unit s bot...

Page 33: ...ds When removing burrs point the end of the copper pipe down to avoid introducing foreign materials in the pipe 2B Slide the flare nut onto the copper tube Copper tube 90 Slanted Uneven Rough Pipe Reamer Point down Flare nut Copper tube Bar Copper pipe Clamp handle Red arrow Cone Yoke Handle Bar A Slanted Inside is shiny with no scratches Smooth Even length Damanged surface Cracked Uneven thicknes...

Page 34: ...or with dust moisture etc See Table 13 for care of piping Dry Clean Airtight Principles No moisture should be inside the piping No dust should be inside the piping No leaks should occur Problems Caused Significant hydrolysis of refrigerant oil Refrigerant oil degradation Poor insulation of the compressor System does not operate properly EEVs capillary tubes are clogged Refrigerant oil degradation ...

Page 35: ...on valves and other heat sensitive control components from excessive heat with a wet rag or a heat barrier spray product Refrigerant Piping System Insulation All refrigerant piping field provided isolation ball valves service valves and elbows shall be completely insulated using closed cell pipe insulation The liquid and vapor lines must be insulated separately To prevent heat loss heat gain throu...

Page 36: ...t gas Prevent dust water or other contaminants from entering the piping during installation Contaminants can cause mechanical failure Selecting Field Supplied Copper Tubing Copper is the only approved refrigerant pipe material for use with Duct Free System Single Zone products and LG recommends seamless phosphorous deoxidized ACR type copper pipe hard drawn rigid type K or L or annealed tempered c...

Page 37: ...vided to allow pipe expansion to naturally occur The most common method is the inclusion of expansion Loop or U bends Each segment of pipe has a natural fixed point where no movement occurs This fixed point is located at the center point of the segment assuming the entire pipe is insulated in a similar fashion The natural fixed point of the pipe segment is typically where the expansion Loop or U b...

Page 38: ...t will be the change in pipe length Pipe Length1 Fluid Temperature F 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 10 0 04 0 04 0 05 0 06 0 06 0 07 0 08 0 08 0 09 0 09 0 10 0 10 0 11 0 11 0 11 0 12 0 13 0 14 0 15 0 15 20 0 08 0 08 0 10 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 22 0 23 0 26 0 28 0 29 0 30 30 0 12 0 12 0 15 0 18 0 20 0 21 0 23 0 24 0 26 0 27 0 29 ...

Page 39: ...t and the indoor unit Duct free Single Zone systems are provided with redundant systems that assure oil is properly returned to the compressor Sight glasses and solenoid valves may cause vapor to form in the liquid stream Over time dryers may deteriorate and introduce debris into the system The designer and installer should verify the refrigerant piping system is free of traps sagging pipes sight ...

Page 40: ...rts should be de signed to meet local codes If allowed by code use fiber straps or split ring hangers suspended from the ceiling on all thread rods fiber straps or split ring hangers can be used as long as they do not compress the pipe insulation Place a second layer of insulation over the pipe insulation jacket to prevent chafing and compression of the primary insulation within the confines of th...

Page 41: ... 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 36 Typical Arrangement of Refrigerant Pipe and Cable s in a Utility Conduit Table 19 Utility Conduit Sizes 1 OD pipe diameter in inches Values in parenthesis indicate OD of pipe with insulation jacket 2 Diameter of pipe with insulation ...

Page 42: ...nt piping length LS091HSV3 LS121HSV3 LS181HSV3 LS240HSV3 65 6 65 6 98 4 98 4 Distance between fittings and indoor units or outdoor units 20 inches 20 inches 20 inches 20 inches Elevation All Elevation Limitations are Measured in Actual Feet If outdoor unit is above indoor unit 32 8 32 8 49 2 49 2 If outdoor unit is below indoor unit 32 8 32 8 49 2 49 2 Additional Refrigerant Needed oz ft 0 22 0 22...

Page 43: ...s or outdoor units 20 inches 20 inches 20 inches Elevation All Elevation Limitations are Measured in Actual Feet If outdoor unit is above indoor unit 98 4 98 4 98 4 If outdoor unit is below indoor unit 98 4 98 4 98 4 Additional Refrigerant Needed oz ft 0 38 0 38 0 38 Refrigerant Piping System Limitations Pipe Length ELF Equivalent Length of pipe in Feet Longest total equivalent piping length LSU09...

Page 44: ...port Lengths Outdoors Installation Duct Free Single Zone Wall Mounts are a one to one sys tem There is a direct piping connection between the outdoor unit and the indoor unit Figure 38 Illustrates the basic pipe connections between the outdoor and indoor unit Refer back to this illustration as you proceed with pipe connections This illustration shows the indoor unit being installed at a higher pos...

Page 45: ...down to up 3 Secure the taped piping along the exterior wall using pipe clamps 4 Create trap above the electrical connections cover in order to pre vent water from penetrating electrical components and wiring Indoor Unit Installed Below Outdoor Unit 1 Refer to Figure 43 while following the procedures below 2 Tape the piping drain hose and connection cable from down to up 3 Secure the taped piping ...

Page 46: ...as necessary Drain hose is routed from the indoor unit through the structure wall to the outdoor It should slope at an angle where it is high er at the indoor unit and lower toward the outdoor area thereby letting gravity push any condensation down and out See Figure 44 for proper drainage slope Avoid piping the drain hose as shown in Figure 45 These methods are incorrect and can cause leakage at ...

Page 47: ...ouple of drops of refrigerant oil on the opening rim of the flare before assembling Ensure you do not add any contaminants Tighten the flare nut initially by hand 5 Finish tightening the flare nut with a torque wrench until the wrench clicks Follow torque guidelines in Table 25 See Figure 49 for HSV3 model and Figure 50 for HV3 HLV models for cor rect connection points Figure 46 Outdoor Unit Conne...

Page 48: ... trademark of LG Corp Refrigerant Piping Connections Single Zone Wall Mount Outdoor Unit Connections HSV3 HV3 HLV Continued Outdoor Unit Connections Figure 48 Pipe Attachment Figure 49 Outdoor Unit Piping Connection HSV3 Figure 50 Outdoor Unit Piping Connection HV3 HLV Outdoor Unit Gas Piping Larger diameter Liquid Piping Smaller diameter Torque Wrench Bracket for Main Power Cables HSV3 Outdoor Un...

Page 49: ... Place a couple of drops of refrigerant oil on the opening rim of the flare before assembling Ensure you do not add any contaminants Tighten the flare nut initially by hand 5 Finish tightening the flare nut with a torque wrench until the wrench clicks Follow torque guidelines in Table 26 Outdoor Unit Connections Figure 51 Outdoor Unit Cover Removal and Piping Connection 090HEV 090HXV 120HEV 120HXV...

Page 50: ... Figure 54 for correct liquid and gas pipe attachment onto outdoor unit 4 Place a couple of drops of refrigerant oil on the opening rim of the flare before assembling Ensure you do not add any contaminants Tighten the flare nut initially by hand 5 Finish tightening the flare nut with a torque wrench until the wrench clicks Follow torque guidelines in Table 26 on previous page Figure 53 Outdoor Uni...

Page 51: ...0HEV Figure 57 Outdoor Unit Piping Connection 240HEV 1 Remove the tubing cover by loosening the fastening screws Figure 55 2 Align the center of the refrigerant pipe and corresponding connection as shown in Figure 56 3 Refer to Figure 57 for correct liquid and gas pipe attachment onto outdoor unit 4 Place a couple of drops of refrigerant oil on the opening rim of the flare before assembling Ensure...

Page 52: ...lope during piping procedure 1 Pull the screw cap at the bottom of the indoor unit Figure 58 2 Unscrew the three 3 screws at the bottom of the chassis cover 3 Remove the chassis cover being careful not to scratch the main horizontal vane Figure 58 Removing Chassis Cover from Indoor Unit 4 From the rear of the indoor unit pull the tubing holder away from the unit as shown in Figure 59 5 Remove the ...

Page 53: ...e able to reach the conduit once piping and drain hose are in place and anchored For specific bracket placement see each figure relating to the specific single zone model Type D Screws HV3 Models Conduit Bracket Figure 60 Installing Bracket for Conduit HV3 Figure 61 Installing Bracket for Conduit 090HEV Figure 62 Installing Bracket for Conduit 120HEV Figure 63 Installing Bracket for Conduit 180HEV...

Page 54: ... sure the tube cutting line is placed upward Figure 65 3 Verify that rear piping house section is wrapped with vinyl tape Use a narrow type of vinyl tape for this step 4 Continue to wrap the Indoor unit pipe as connected to the outdoor connection pipe as shown in Figure 66 Figure 64 Piping with Insulation Material Figure 65 Correct Cutting Line Placement Figure 66 Wrapping Connection Pipe to Indoo...

Page 55: ...n pipe with no air space between it and the pipe Insulation passing through pipe hangers inside conduit and or sleeves must not be compressed Protect insulation inside hangers and supports with a second layer All pipe insulation exposed to direct sunlight and deterioration produc ing elements must be properly protected with a PVC aluminum vapor barrier jacket or alternatively placed in a weather r...

Page 56: ...erate Hallway or a dormitory or school etc Minimum Refrigerant Pipe Ethylene Propylene Diene Methylene EPDM Insulation Wall Thickness Requirements 4 Special location Non Air conditioned location If conditions 1 and 2 below are present 1 When the piping passes through an indoor area where the indoor unit does not operate 2 When the humidity is high and there is no air flow in the location where the...

Page 57: ...e resistant insulation When filling an access hole with mortar cover the area with steel plate so that the insulation will not fall through For this area use fire resistant materials for both the insulation and cover Vinyl cover should not be used Pipe Sleeves at Penetrations LG requires that all pipe penetrations through walls floors and pipes buried underground be properly insulated and routed t...

Page 58: ...ary tubing Water can lead to corrosion of parts in the system Air Purging with a Vacuum Pump Preparation Steps 1 Verify that each set of pipes liquid and gas are properly con nected between the indoor and outdoor unit Verify that all wiring for a test run has been completed 2 Remove service valve caps from the gas and liquid valves at the outdoor unit Figure 73 Both the liquid and gas side service...

Page 59: ... close the cylinder valve when the gauge reading reaches 150 P S I G Lo Hi Outdoor Unit Manifold Valve Charge Hose Nitrogen Gas Tank Upright Position Pressure Gauge Indoor Unit Piping Bundle Leak Test Using Nitrogen Tank To avoid nitrogen entering the refrigerant system in a liquid state the top of the cylinder must be higher than its bottom when you pressurize the system Be sure cylinder is used ...

Page 60: ...nning After leakage testing and evacuation procedure the system should be ready to start up for a test run Follow the guidelines below for proper procedure Check that all tubing piping and wiring are properly connected Make sure that the gas and liquid service valves are fully open Start up the system and do a test run As system is up and running verify all is in working order and make notes as ne...

Page 61: ...ds two AAA 1 5V batteries for operation Remove the battery cover from the back of the remote controller Figure 76 Push downward on the tab at the top of the battery cover and then lift up to remove 2 Insert the two new batteries Align batteries by the and sides The interior battery compartment of the remote controller will have clear markings for the and placement 3 Verify that the batteries have ...

Page 62: ...and then immediately turn the unit off Pump down procedure is complete at this time and all refrigerant should be collected into the outdoor unit Enabling Cooling Only Mode Before running the Pump Down procedure you must place the unit into Cooling Only Mode In order to be able to run Cooling Only Mode you must enter the unit into the Installer Mode by pressing the Reset button and the JET MODE bu...

Page 63: ... and National Electrical Code regulations related to electrical equipment and wiring and following the instructions in this manual Undersized wiring may lead to unacceptable voltage at the unit and may cause unit malfunction and be a fire hazard Properly ground the Single Zone outdoor and indoor unit Ground wiring is required to prevent accidental electrical shock during cur rent leakage Ground wi...

Page 64: ...ngle Zone Outdoor and Indoor Wiring and Communications Cable Diagram Copper Wire Terminate multiple power wires of the same gauge to both sides Do not terminate two wires on one side Do not terminate different gauge wires to a terminal block Ring Terminal Power Wiring Connecting the Power Wiring Guidelines Best practice dictates using ring or spade terminals to terminate power wiring at the power ...

Page 65: ...etween the Single Zone outdoor unit and the indoor unit Minimum 18 gauge shielded CVVS or CPEVS cable Insulation material as required by local code Rated for continuous exposure of temperatures up to 140 F Maximum allowable cable length 984 feet Firmly attach the cable provide slack but secure in a way to pre vent external forces from being imparted on the terminal block Wiring should be completed...

Page 66: ...lers Refer to Table 31 as to which remote controller models to use for each Single Zone model types Once all wiring is connected to the indoor and outdoor units be sure to test the accompanying remote controllers for performance As always follow all safety warnings and notes when operating the Single Zone units using the remote controller Table 31 Single Zone Models and Associated Remote Controlle...

Page 67: ...llips screw heads as shown in Figure 80 Normally there are three 3 screws on the panel however your indoor unit model may differ 2 Using a phillips head screwdriver remove the screws from the bottom panel of the indoor unit and set aside Figure 81 3 Remove the bottom panel Figure 82 Removal is necessary to gain access to the terminal block which is situated at the bottom of most indoor units Note ...

Page 68: ...ing 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 Refer back to Figure 80 as...

Page 69: ...Terminal Block Connections Indoor Unit Electrical Connections Terminal Block Connection for HLV See Figure 85 for specific terminal block wiring for all following Single Zone models LSN240HLV LSN300HLV LSN360HLV Terminal Block Connection for HV3 See Figure 86 for specific terminal block wiring for all following Single Zone models LSN307HV3 LSN360HV3 Terminal Block Connection for 240HSV3 See Figure...

Page 70: ...Cable Restrainer 091HSV3 121HSV3 181HSV3 Indoor Unit Electrical Connections Figure 87 091HSV3 121HSV3 181HSV3 Indoor Units Terminal Block Connections Figure 88 Mega 090HEV 120HEV 180HEV 240HEV Indoor Units Terminal Block Connections Pay special attention to the location of the grounding cable and the cable restrainer around the other electrical communication cables when connecting Note that the te...

Page 71: ...ghts reserved LG is a registered trademark of LG Corp Electrical Wiring Terminal Block Connection for Mega 115V 090HXV 120HXV See Figure 88XX for specific terminal block wiring for all following Single Zone models LSN090HXV LSN120HXV Indoor Unit Electrical Connections Terminal Block Terminal Block Expanded View Grounding Cable Connecting Cables Cable Restrainer 090HXV 120HXV ...

Page 72: ...onnections Procedure Refer to Figure 89 below for an example of how a circuit breaker should be wired through to the Single Zone system Be sure there is no power going through the Single Zone system before proceeding with these connections as it may result in electric shock Familiarize yourself with the location of the circuit breaker and be sure that all power is cut to the Single Zone unit as it...

Page 73: ...t models LSU307HV3 LSU360HV3 Connecting Outdoor Unit Electrical Wiring Continued HV3 All models 181HSV3 240HSV3 Electrical Connections Outdoor Unit Terminal Block Over 0 2 Conduit Panel Connection Communication Cable Leading to Indoor Unit Power Cord Conduit Panel Cover 1 L1 2 L2 1 L1 2 L2 3 HV3 181HSV3 240HSV3 Figure 91 HV3 and 181HSV3 240HSV3 Outdoor Unit Electrical Connections Figure 92 091HSV3...

Page 74: ...for all following Single Zone outdoor unit models LSU090HEV LSU120HEV Conduit panel cover Tubing cover Terminal block Outdoor Unit 090HEV 120HEV 1 L1 2 L2 1 L1 2 L2 3 Power connecting cable Power cord Cord clamp Figure 93 090HEV 120HEV Outdoor Unit Electrical Connections Figure 94 180HEV Outdoor Unit Electrical Connections Terminal Block Connection for 180HEV See Figure 94 for specific terminal bl...

Page 75: ...N090HXV LSN120HXV Figure 95 240HEV Outdoor Unit Electrical Connections Figure 96 090HXV 120HXV Outdoor Unit Electrical Connections Terminal Block Connection for 240HEV See Figure 95 for specific terminal block wiring for the following Single Zone outdoor unit model LSU240HEV Outdoor unit Terminal block Conduit Panel Cover Over 0 2 Conduit panel Connecting cable Power supply cord 1 L1 2 L2 3 1 L1 2...

Page 76: ...verter compressor discharge temperature Front outdoor coil pipe temperature Back outdoor coil pipe temperature Liquid line pipe temperature Subcooler inlet temperature Subcooler outlet temperature Average indoor unit IDU pipe temperature Inverter compressor operation indicator light Liquid injection valves operation indicator lights Hot gas bypass valve operation indicator light Four way reversing...

Page 77: ...use of a USB to RS 485 connector kit When connected through IDU user will not be able to record data This software can be used to both commission new systems and troubleshoot existing systems LGMV data can be recorded to a CSV file and emailed to an LG representative to assist with diagnostic evaluations Recommended Minimum PC Configuration Error Codes LGMV software helps the service technician or...

Page 78: ...pp LG SIMs can also be used with Single Zone one to one configurations such as the Single Zone Wall Mount systems The Duct Free System air conditioning system must run for at least 15 20 minutes before data collected by SIMs 2 0 is valid for troubleshooting You must have the free SIMs app correctly in stalled on your smart phone before using SIMs Some ODUs have an LGMV extension cable ac cessed by...

Page 79: ... Restart Timer Comp Mode EEV Indoor Info Tab Displays the following information Frequency Operation THM Mode REM Mode FAN EEV Air Temp Pipe in Pipe mid Pipe out Graph Info Tab This tab has three sub sections IDU Indoor Unit Temperature graph Displays IDU information in graph format Information displayed is for the IDU selected on the Main screen ODU Outdoor Unit Temperature and Frequency graph Dis...

Page 80: ...stic Software If two or more errors occur simultaneously the lower error code number is displayed first After error is resolved the error code does not display Decoding the Error Display The first and second number on the LED indicates error number Example 21 LED1 Green light 2x blink LED2 Red light 1x blink Error Code Nomenclature Definitions MICOM Non volatile memory chip where unit setup inform...

Page 81: ...0 CT Sensor Error Thermistor is disconnected or shorted out 4X 41 D Pipe Sensor INV is disconnected or shorted out 4X 1X 44 Outdoor Air Sensor is disconnected or shorted out 4X 4X 45 Middle thermistor of outdoor unit condenser coil is disconnected or shorted out 4X 5X 46 Outdoor unit suction line thermistor is disconnected or shorted out 4X 6X 48 Outdoor unit coil outlet liquid line thermistor is ...

Page 82: ...is disconnected or shorted out 4X 1X 44 Outdoor Air Sensor is disconnected or shorted out 4X 4X 45 Middle thermistor of outdoor unit condenser coil is disconnected or shorted out 4X 5X 46 Outdoor unit suction line thermistor is disconnected or shorted out 4X 6X 48 Outdoor unit coil outlet liquid line thermistor is disconnected or shorted out 4X 8X 53 Communication failure from outdoor unit to indo...

Page 83: ...efrigerant concentration level in the space where the indoor unit will be mounted meets the concentration limit for the application 1 American Society of Heating Refrigeration and Air Conditioning Engi neers Inc ASHRAE Atlanta GA ASHRAE Inc Information about ASHRAE Standard 15 2010 34 2010 and addenda current as of the date of this publication Take appropriate actions at the end of HVAC equipment ...

Page 84: ...ssed at clamps and hangers Brazing Practices Description Check Medical grade there are 4 available dry nitrogen for purging during brazing was used constant 3 psi while brazing Installation For more information on any procedure refer to the detail provided in the Indoor Unit Installation Manuals Refrigerant Piping Description Check All pipe materials were properly stored capped and clean All burrs...

Page 85: ...ll local electrical code requirements Power wiring to the indoor unit was installed per all local electrical code requirements LG supplied cable was used between the indoor unit and its zone controller No cables were spliced and no wire caps are present Communication type RS 485 BUS type All communications cables were a minimum of 18 AWG four 4 conductor shielded and stranded with insulation mater...

Page 86: ...Division 11405 Old Roswell Road Alpharetta Georgia 30009 www lghvac com IM WallMounted ALL 08 14 LG Customer Information Center Commercial Products 1 888 865 3026 USA Follow the prompts for commercial A C products 20001747 ISO 9001 2008 LG ELECTRONICS INC ...

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LG LS090HEV, Installation Manual

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