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32

Single Zone Extended Piping W

all Mounted Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

REFRIGERANT PIPING CONNECTIONS

Installation Overview

Figure 33: Installation and Piping Connection Overview (Appearances Will Vary

Depending on Model).

Installation

Single Zone 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 illus-
trates the basic pipe connections between the outdoor
and indoor unit. Refer to the illustration when proceeding
with pipe connections.

This illustration shows the indoor unit being installed at
a higher position than the outdoor unit. However, if the
outdoor unit be installed at a higher position than the
indoor unit, the basic pipe connections are the same.

Refer back to the tables within the “Connection Limita-
tions” section for specific length limitations in conjunction
with outdoor unit and indoor unit positioning.

• When proceeding with piping connections, adhere to

SLSHVXSSRUWVSDFLQJOHQJWKVDVVKRZQLQWKH³*HQHUDO

5HIULJHUDQW3LSLQJ6\VWHP´,QIRUPDWLRQVHFWLRQ5HIHU

WRWKH³3LSH6XSSRUWV´VHFWLRQIRULQIRUPDWLRQRQXVLQJ

clamps and pipe support materials.

• Always adhere to local codes regarding piping and

accurate support spacing along the piping system.

• Always include insulation on all refrigerant and drain

piping to ensure condensate does not form and cause

damage to walls, floors, etc.

Bend the piping as closely

to the wall as possible, but do not break it.

Installation Plate

Air Filter

Bottom Cover

Vapor (Gas)

Pipe (Larger Pipe)

Liquid Pipe (Smaller Pipe)

Drain Hose

Power Wiring /
Communication (Connection) Cable

Vapor (Gas) Service Valve

Liquid Service Valve

(Vapor [Gas] / Liquid) Service Valve Caps

System refrigerant piping, drain hose extensions, and power wiring / communications cables
must be field supplied.

Field-Supplied Sleeve
Field-Supplied Sealant

Field-Supplied Clamp

Wiring Cable Access Holes

«
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30
31
32
33
34
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Summary of Contents for LS243HLV3

Page 1: ...SINGLE ZONE EXTENDED PIPING WALL MOUNTED INSTALLATION MANUAL 2 Tons LS243HLV3 2 1 2 and 2 3 4 Tons LS303HLV3 LS363HLV3 ...

Page 2: ...of safety precautions 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 Ele...

Page 3: ...will HQWHU WKH XQLW FDXVLQJ UH HOHFWULF VKRFN DQG SK VLFDO LQMXU RU GHDWK Always check for system refrigerant leaks after the unit has been installed or serviced Exposure to high concentration levels of refrigerant gas will lead to illness or death Wear protective gloves when handling equipment Sharp edges will cause personal injury Dispose the packing materials safely Packing materials such as na...

Page 4: ... life to recover recycle reclaim or destroy R410A refrigerant according to applicable U S Environmental Protection Agency EPA rules Periodically check that the outdoor frame is not damaged There is a risk of equipment damage Install the unit in a safe location where nobody can step on or fall onto it Do not install the unit on a defective stand There is risk of unit and property damage Install the...

Page 5: ...struments Failure to carefully read and follow all instructions in this manual can result in personal injury or death All electric work must be performed by a licensed electrician and conform to local building codes or in the absence of local codes with the National Electrical Code and the instructions given in this manual If the power source capacity is inadequate or the electric work is not SHUI...

Page 6: ...use physical injury or death If gas leaks out ventilate the area before operating the unit If the unit is mounted in an enclosed low lying or poorly ventilated area DQG WKH V VWHP GHYHORSV D UHIULJHUDQW OHDN LW ZLOO FDXVH UH HOHFWULF shock explosion physical injury or death To avoid physical injury use caution when cleaning or servicing the air conditioner Do not allow water dirt or animals to ent...

Page 7: ...g Procedures 30 31 Refrigerant Piping Connections 32 47 Installation Overview 32 Special Applications 33 Outdoor Unit Connections 34 Indoor Unit Connections 35 39 Outdoor Unit Condensate Drain Hose 40 Indoor Unit Condensate Drain Hose 41 44 Bundling 45 Insulation 46 47 Electrical System Installation 48 58 Safety Guidelines 48 RQQHFWLRQV DQG 6SHFL FDWLRQV 48 52 Controller Options 52 Indoor Unit Ele...

Page 8: ...S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp GENERAL DATA Single Zone Wall Mount Indoor and Outdoor Units Unit Nomenclature LS N 243 HLV Indoor Outdoor Product HLV Extended Piping 243 22 303 30 363 33 Type N Indoor Wall Mount Unit U Outdoor Heat Pump Unit Family LS Wall Mounted Capacity Mbh Generation or Revision 1 First 2 Second 3 Third 3 ...

Page 9: ...or line and liquid line with insulation Drain hose extension Required Parts field provided Included Parts Part Quantity Image Installation Plate Dimensions Will Vary Depending on Model One 1 Type A Screws for Installation Plate Five 5 Type B Screws for Wireless Controller Holder Two 2 Type C Screws for Frame Two 2 Type D Screws for Bracket Two 2 Type E Screws for Drain Hose Optional One 1 Bracket ...

Page 10: ...aracteristics on page 11 7 Piping lengths are equivalent System Model Indoor Unit Outdoor Unit LS243HLV3 LSN243HLV3 LSU243HLV3 LS303HLV3 LSN303HLV3 LSU303HLV3 LS363HLV3 LSN363HLV3 LSU363HLV3 Cooling Capacity1 Min Rated Max Btu h 3 070 22 000 30 000 3 070 30 000 34 000 3 070 33 000 34 000 Cooling Power Input1 Rated kW 1 69 2 66 3 30 Heating Capacity Min Rated Max Btu h 3 070 26 000 36 200 3 070 32 ...

Page 11: ...to Max MCA MOP Compressor Qty Compressor Motor RLA Outdoor Fan Motor Indoor Fan Motor Cooling Heating W FLA W FLA 2 LS243HLV3 60 208 230 187 253 19 0 30 1 14 41 14 41 124 0 4 58 0 5 2 1 2 LS303HLV3 23 0 30 1 15 1 15 1 124 0 25 110 0 5 2 3 4 LS363HLV3 23 0 30 1 15 1 15 1 124 0 25 110 0 5 Voltage tolerance is 10 Maximum allowable voltage unbalance is 2 MCA Minimum Circuit Ampacity Maximum Overcurren...

Page 12: ...oid placing the outdoor unit in a low lying area where water could accumulate If the outdoor unit is installed in a highly humid environment near an ocean lake etc ensure that the site is well ventilated and has a lot of natural light Example Install on a rooftop Do Not s Where it will be subjected to direct thermal radiation from other heat sources or an area that would expose the outdoor unit to...

Page 13: ...ulate any drain hoses to prevent the hose from freez ing cracking leaking and causing unsafe conditions from frozen condensate Tie Downs and Lightning Protection Tie Downs The strength of the roof must be checked before installing the outdoor units If the installation site is prone to high winds or earthquakes when installing on the wall or roof securely anchor the mounting base using a field prov...

Page 14: ... must be more than 150 of the outdoor unit s height There must be 2 to 3 1 2 inches of clearance between the outdoor unit and the windbreaker for purposes of air flow Additional anti corrosion treatment will need to be applied to the outdoor unit at oceanside locations Ocean winds will cause corrosion particularly on the condenser and HYDSRUDWRU QV ZKLFK LQ WXUQ FRXOG FDXVH SURGXFW PDOIXQFWLRQ RU ...

Page 15: ...or unit consider service inlet and outlet and minimum allowable space requirements as illustrated in the diagrams below Specific clearance requirements in the diagram below are for single fan outdoor units Figure 4 shows the overall minimum clearances that must be observed for safe operation and adequate airflow around the outdoor unit When placing the outdoor unit under an overhang awning sunroof...

Page 16: ...hrough the openings at the bottom If a crane is to suspend the outdoor unit it is required that two 2 ropes at least twenty three 23 feet in length be used Pass the ropes under the unit Pass the rope through the two 2 forklift slots each at the front and rear of the outdoor unit 7R SUHYHQW GDPDJH WR WKH RXWGRRU XQLW DOZD V OLIW WKH XQLW ZLWK WKH URSHV DWWDFKHG DW IRXU SRLQWV DW DQ DQJOH RI Always ...

Page 17: ... the concrete platform will not degrade easily and has enough structural strength to bear the weight of the unit 2 Include an H beam support Firmly attach the corners otherwise the support will bend 3 Use a hexagon nut 4 Use anti vibration material 5 Include enough space around the concrete foundation for con densate drainage 6 Seal all wiring and piping access holes to prevent insects from enteri...

Page 18: ...prevention is taken into consideration Do not install near doorway Avoid installing the unit near high frequency generators 7KH XQLW PXVW QRW EH LQVWDOOHG ZKHUH VXOIXULF DFLG DQG ÀDPPDEOH RU corrosive gases are generated vented into or stored There is risk of UH H SORVLRQ DQG SK VLFDO LQMXU RU GHDWK The unit will be damaged will malfunction and or will not operate as designed if installed in any o...

Page 19: ... attach indoor units to sheet rock drywall plasterboard tile plywood or similar materials without proper anchors Indoor units must be securely and prop erly mounted anchored Improper installation will result in damage to the indoor unit Anchor Anchor Screw 15 64 x 1 3 16 in 6 x 30 mm 5 32 x 1 31 32 in 4 x 50 mm Table 7 Anchor Screw Sizes Figure 13 Extended Piping Wall Mount LSN243HLV3 Indoor Unit ...

Page 20: ... of Access Hole s 3 16 5 16 Indoor WALL Outdoor Bushing Core Drill Sleeve Figure 18 Drilling Piping Hole a b c d Framework of Indoor Unit Installation Plate Image Reference Installation Plate 243HLV3 Installation Plate 303 363HLV3 a 3 25 64 in 86 mm 8 5 8 in 219 mm b 5 5 32 in 131 mm 10 15 32 in 266 mm c 6 19 64 in 160 mm 6 27 64 in 163 mm d 8 25 64 in 213 mm 8 25 64 in 213 mm Table 8 Distance of ...

Page 21: ...on plate successfully Figure 22 Attaching the Indoor Unit to the Installation Plate Figure 23 Releasing the Piping Holder Mounting the Indoor Unit to the Installation Plate The indoor unit can fall from the wall if it is not properly installed and secured to the installation plate Falling indoor units can cause bodily injury or death To avoid a gap between the installation plate and the wall ensur...

Page 22: ...tions A single zone system consists of one outdoor unit and one indoor unit One of the most critical elements of a single zone system is the refrigerant piping If the connection piping is not within allowable limits there will be reliability performance noise and vibration issues The table below lists the pipe length limits that must be followed in the design of a Single Zone Extended Piping Wall ...

Page 23: ...per Tubing Material OD in 1 4 3 8 1 2 5 8 3 4 7 8 1 1 8 1 3 8 1 5 8 Material Rigid or Soft ACR Rated for R410A Rigid or Soft ACR Rated for R410A Min Bend Radius in 0 563 0 9375 1 5 2 25 3 0 3 0 3 5 4 0 4 5 Min Wall Thickness in 0 03 0 03 0 03 0 03 0 03 0 03 0 03 0 04 0 050 Table 12 ACR Copper Tubing Dimensions and Physical Characteristics1 3 Nominal Pipe Outside Diameter in Actual Outside Diameter...

Page 24: ... anticipated expansion distance Do the same for the maximum pipe temperature 3 Calculate the difference in the two expansion distance values The result will be the anticipated change in pipe length General Example A system is installed and the design shows that there is a 100 foot straight segment of tubing between an indoor unit and the outdoor unit In heating this pipe transports hot gas vapor t...

Page 25: ...1 05 1 10 1 08 1 15 1 30 1 40 1 45 1 50 120 0 48 0 48 0 60 0 72 0 78 0 84 0 90 0 96 1 02 1 08 1 14 1 20 1 26 1 32 1 30 1 38 1 56 1 68 1 74 1 80 140 0 56 0 56 0 70 0 84 0 91 0 98 1 05 1 12 1 19 1 26 1 33 1 40 1 47 1 54 1 51 1 61 1 82 1 96 2 03 2 10 160 0 64 0 64 0 80 0 96 1 04 1 12 1 20 1 28 1 36 1 44 1 52 1 60 1 68 1 76 1 73 1 84 2 08 2 24 2 32 2 40 180 0 72 0 72 0 90 1 08 1 17 1 26 1 35 1 44 1 53...

Page 26: ...Refrigerant oil degradation Poor insulation of the compressor System does not operate properly Solutions Remove moisture from the piping Piping ends should remain capped until connections are complete Do not install piping on a rainy day Connect piping properly at the unit s side Remove caps only after the piping is cut the burrs are removed and after passing the piping through the walls Evacuate ...

Page 27: ... and calculated into the total and segment equivalent piping lengths and compared to product design limitations In all cases materials must be suitable for the application and any applicable codes including but not limited to diameter and wall thick ness continuity per ACR standards Failure to do so will cause significant performance degradation Proper leak checks must be performed Using isolation...

Page 28: ...een the hangers and insulation Field provided pipe supports must be designed 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 compressio...

Page 29: ...pipe in stalled inside underground casing must be continuous without any joints Underground refrigerant pipe must be located at a level below the frost line Table 16 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 Thickness of pipe insulation is typical Actual required thickness will vary based o...

Page 30: ...reate a 45 flare when working with R410A 1 Cut the pipe to length Measure the distance between the indoor unit and the outdoor unit Cut the pipes a little longer than measured distance 2A Remove the burrs Completely remove all burrs from pipe ends 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...

Page 31: ...fices electronic expansion valves oil separators and heat exchangers that can easily become blocked Proper system operation depends on the installer using best practices and utmost care while assembling the piping system 2 Store pipe stock in a dry place keep stored pipe capped and clean 3 Blow clean all pipe sections with dry nitrogen prior to assembly 4 Always use a non oxidizing material for br...

Page 32: ...he same Refer back to the tables within the Connection Limita tions section for specific length limitations in conjunction with outdoor unit and indoor unit positioning When proceeding with piping connections adhere to SLSH VXSSRUW VSDFLQJ OHQJWKV DV VKRZQ LQ WKH HQHUDO 5HIULJHUDQW 3LSLQJ 6 VWHP QIRUPDWLRQ VHFWLRQ 5HIHU WR WKH 3LSH 6XSSRUWV VHFWLRQ IRU LQIRUPDWLRQ RQ XVLQJ clamps and pipe support ...

Page 33: ...over or bundle the separately insulated refrigerant piping and the communications connection power cable together up to the outdoor unit service valves 2 Make sure to include some slack in the wiring Wiring must be installed in upwards direction to prevent water from accessing the control box 3 If necessary secure the piping set cover or bundle along the outside wall using saddles or a similar typ...

Page 34: ... Unit Piping Connections Side Panel Figure 37 Connecting the Flared Field Piping to the Out door Unit Connection The HLV3 outdoor unit has a side panel that covers its electrical compo nents The side panel does not have to be removed for piping installation however it will need to be removed for power wiring communication connection cable installation 2 Remove the flare nuts attached to the outdoo...

Page 35: ...t at several connection points The number and position of the connections vary depending on the model of indoor unit 3 Hold the center of the bottom panel and pull it towards to disen gage the clips releasing them from the connection points 4 Pull both sides of the bottom panel out to release the clips from the connections being careful not to damage the bottom panel or scratch the main horizontal...

Page 36: ...plied piping 4 Flare the end of the piping following industry best practices and the information in the General Refrigerant Piping System section 5 Place a couple of drops of PVE refrigerant oil on outside of the flare before assembling Do not add any contaminants 6 Align the center of the refrigerant field piping to the corresponding indoor unit piping 7 Connect the refrigerant field piping to th...

Page 37: ... conduit bracket assembly 3 Attach the conduit bracket assembly to the back of the indoor unit using the black Type D screws found in the accessory kit Check local state and federal codes when choosing a conduit size RU V VWHPV ZLWK ZLULQJ JUHDWHU WKDQ IHHW VHH WKH RPPXQLFDWLRQ RQQHFWLRQ 3RZHU DEOH 6SHFLILFDWLRQV IURP 2XWGRRU 8QLW WR QGRRU 8QLW LQ WKH OHFWULFDO 6 VWHP QVWDOODWLRQ VHFWLRQ for infor...

Page 38: ...rops of refrigerant oil on outside of the flare before assembling Do not add any contaminants Tighten the flare nut initially by hand 4 Finish tightening the flare nut with a torque wrench until the wrench clicks Follow torque guidelines in the table as shown on the Connecting the Indoor Unit Refrigerant Piping Page KHQ WLJKWHQLQJ WKH ÀDUH QXW ZLWK D WRUTXH ZUHQFK HQVXUH WKH GLUHFWLRQ for tighteni...

Page 39: ... any contaminants Tighten the flare nut initially by hand 4 Finish tightening the flare nut with a torque wrench until the wrench clicks Follow torque guidelines in the table as shown on the Connecting the Indoor Unit Refrigerant Piping Page KHQ WLJKWHQLQJ WKH ÀDUH QXW ZLWK D WRUTXH ZUHQFK HQVXUH WKH GLUHFWLRQ for tightening follows the arrow on the wrench 5 Bundle the refrigerant piping drain hos...

Page 40: ...p in the outdoor unit impairing heating performance and even will damage the outdoor unit Installing Outdoor Unit Drain Plug Piping 1 See diagram at right for drain connection drain caps and drain washer locations on the outdoor unit 2 If a drain hose is necessary connect the drain hose to the drain plug with the drain washer through the drain hole on the bottom of the outdoor unit 3 Connect field...

Page 41: ...ements 1 Remove the drain cap from the hole where the drain hose will be connected 2 Block the unused drain hole with the drain cap Verify that the cap is tightly inserted 3 There are two methods for attaching the drain hose to the indoor unit depend ing on the indoor unit model the drain hose and application requirements Type One Firmly install the drain hose onto the indoor unit drain hose con n...

Page 42: ...Hose and Ground Water Leak No rainwater trap Drain Hose and Ground are Parallel Horizontal Drain Hose 6 1 2 feet Drain Hose Inserted 2 inches Bundle Taped in Downward Direction Less than 2 inch Gap Buried Pipe Upward slope to outdoor can cause indoor leaks Indoor Unit Indoor Unit Indoor Unit Indoor Unit Water Leak Indoor Unit Indoor Unit Water Leak Indoor Unit Water Leak Indoor Unit Water Leak Dra...

Page 43: ...pplied drain hose and the indoor unit drain hose with vinyl tape 3 All drain hoses and hose connections must be properly insulated to ensure any conden sation will not damage walls floors furniture etc Extension connection insulation is to be more than 12 inches in length and more than 1 4 inches thick follow all local state and federal codes for the proper insulation materials and installation pr...

Page 44: ...orator 3 Verify that the water flows appropriately through and out of the indoor unit and drain hose without any leaks Check all connection areas for leaks the drain hose connection to the in door unit the connection from the indoor unit drain hose to the field suppled drain extension hose drain hose insert into wall embedded drain system 4 Verify that the water is flowing out and through the drai...

Page 45: ... communication connection power cable together with wide vinyl tape 1 Both piping must be fully and separately encased in insulation material Overlap the field installation piping insulation material and the indoor unit piping insulation material Verify that any insulation material cutting lines are placed upward 2 Bind together the two pipes using vinyl tape Make sure there are no gaps during the...

Page 46: ...thickness requirements for Ethylene Propylene Diene Methylene EPDM insulation Inside the outdoor unit maximum pipe temperature is 248 F and minimum pipe temperature is 40 F For field insulation of refrigerant piping between outdoor units and indoor units consider the following pipe temperature ranges for an operating heat pump system Heating mode refrigerant temperature ranges Liquid 75 118 F High...

Page 47: ...es 1 2 inches 1 2 inches Vapor pipe ø3 8 inch 1 2 inches 3 4 inches 3 4 inches 1 inch ø1 2 inch ø5 8 inch ø3 4 inch ø7 8 inch ø1 inch ø1 1 8 inches 3 4 inches ø1 1 4 inches 1 inch 1 inch ø1 3 8 inches ø1 1 2 inches ø1 3 4 inches Table 20 Minimum Refrigerant Pipe EPDM Insulation Wall Thickness Requirements 1 Do not insulate gas and liquid pipes together as this can result in pipe leakage and malfun...

Page 48: ...h Do not connect ground wire to refrigerant gas or water piping to lightning rods to telephone ground wiring or to the building plumb ing system Failure to properly provide a NEC approved earth ground can result in electric shock fire physical injury or death Consider ambient conditions temperature direct sunlight inclement weather etc when selecting installing and connecting the power wiring Prop...

Page 49: ...ctions demonstrated in the figures below Never apply line voltage power to the communications cable terminal block If contact is made the PCBs will be damaged Always include some allowance in the wiring length when terminating Firmly attach the wiring or cable but provide some slack to facilitate removing the electrical panels while servicing and to prevent external forces from damaging the termin...

Page 50: ...ons It will generate heat and or cause a fire resulting in physical injury or death 8VH KHDW SURRI HOHFWULFDO ZLUH FDSDEOH RI ZLWKVWDQGLQJ WHPSHUDWXUHV XS WR WR DYRLG ZLULQJ PDOIXQFWLRQ DQG HOHFWULFDO VKRFN ZKLFK ZLOO cause physical injury or death Install appropriately sized breakers fuses overcurrent protection switches and wiring in accordance with local state and NEC regulation related to elec...

Page 51: ...ply line voltage power to the communication cable connection If contact is made the PCBs will be damaged The shield of the communications cable connecting the outdoor unit to the indoor unit must be grounded only to the outdoor unit frame Tie the shield of each cable segment together using a wire nut at the indoor unit Maintain polarity throughout the communication network Position the incoming po...

Page 52: ...al controllers see the Single Zone Extended Piping Wall Mounted Engineering Manual or contact an LG representative for more information connect to the Single Zone Extended Piping Wall Mounted indoor unit in one of two different ways 1 LG Wired Remote Extension Cable with Molex plug PZCWRC1 sold separately that connects to the CN REMO terminal on the indoor unit PCB 2 Field supplied controller cabl...

Page 53: ...am on the indoor unit bottom cover Removing the Indoor Unit Bottom Panel At this point in the installation procedure the front panel should already be opened and the bot tom cover should already be removed If not follow the steps below 1 Fully open the front panel 2 The bottom panel has plastic clips that attach to the indoor unit at several connection points The number and position of the connect...

Page 54: ...h the pre chosen access hole 2 The terminal block is protected by a metal control box cover To access the terminals unscrew the screw holding the control box cover in place and push the cover up 3 Unscrew the screw to the cable clamp Open the cable clamp 4 Using a JIS screwdriver connect the cable terminals to the terminal block Ensure wire color and terminal number of the indoor unit matches thos...

Page 55: ...g communication cable into the conduit bracket assembly 3 Attach the conduit bracket assembly to the back of the indoor unit using the black Type D screws found in the accessory kit Check local state and federal codes when choosing a conduit size RU V VWHPV ZLWK ZLULQJ JUHDWHU WKDQ IHHW VHH WKH RPPXQLFDWLRQ RQQHFWLRQ 3RZHU DEOH 6SHFLILFDWLRQV IURP 2XWGRRU 8QLW WR QGRRU 8QLW LQ WKH OHFWULFDO 6 VWHP...

Page 56: ...sate to overflow from the drain pan in the inside of the indoor unit I D FRQGXLW LV QRW XVHG VHH WKLV VHFWLRQ RU LQ WKH 5HIULJHUDQW 3LSLQJ RQQHFWLRQV IRU UHIULJHUDQW SLSLQJ FRQGHQVDWH GUDLQ SRZHU ZLULQJ communication cable bundling information Cable Installation When Piping is on the Right Side Insert the communication connection power cable through the right access hole and through the indoor uni...

Page 57: ...t the beginning and throughout this manual Failure to do so will cause unit failure Connect the communication connection power cable to the outdoor unit by matching the terminals on the outdoor unit control board Verify the color of the wires at the indoor unit along with the terminal numbers match those for the outdoor unit Images are representative actual appearance will vary Refer to the circui...

Page 58: ...rminal Outdoor unit wire color and terminal number must match the indoor unit wire color and terminal number Pay attention to the location connection of the ground cable Maintain a minimum of 1 4 inches of wire length from terminal block to conduit bundle Loose wires will cause electric shock bodily injury and or death Loose wires can cause the wiring to burn out damaging the outdoor unit 8 Close ...

Page 59: ...pressured to more than 550 psi Pressures greater than 550 psi will damage the piping system and cause unit malfunction Triple Leak Pressure Check Procedure 1 After the refrigerant piping installation is complete open the isolation ball valves if any that may have been included in the piping system 2 Verify that both the liquid and gas vapor suction line outdoor unit service ports are closed and th...

Page 60: ...cuum rated hoses or copper tubing and a leak free gauge manifold set Use only new vacuum pump oil from a properly sealed unopened container and change oil in pump before EVERY use Subsequent oil changes will be necessary after several hours of continuous operation have extra oil on hand Use a quality micron gauge in good operating order and install as far away from pump as possible Deep Evacuation...

Page 61: ...erant charge until trim charge is complete and the system is ready to operate Any field installed ball valves in the refrigerant system if used must be open to ensure all piping is free and clear for evacuation on all piping and connected indoor unit Never perform evacuation using refrigerant Use only a vacuum pump that can reach 500 microns vacuum rated hoses or copper tubing and a leak free gaug...

Page 62: ...EXW 0867 HYHQWXDOO VWRS ULVLQJ IRU IWHHQ PLQXWHV If the micron level DOES NOT stop rising there is a leak and the leak test must be performed again If the micron level DOES rise above 2 000 micron re open the manifold gauges and the vacuum pump valve and continue evacuation back down to 2 000 micron level If the micron level holds at 2 000 micron continue to step 4 4 Break vacuum with 50 psig nitr...

Page 63: ...service valves on the outdoor unit To open rotate the valves counter clockwise by using an Allen wrench 5 Charge the refrigerant by adjusting the low pressure valve of the gauge manifold See the Sug gested Amount of Refrigerant Charge below or on the LATS report 6 After the correct amount of additional refrigerant is charged close the low pressure valve of the gauge manifold and remove the low pre...

Page 64: ...ort caps on both the gas vapor suction and the liquid using an adjustable wrench Finalizing Wall Mounted Installation 1 Close the piping holder by snapping it back into place on the indoor unit 2 Push the bottom of indoor unit towards the installation plate Press the lower left and right sides of the unit against the installation plate until the clips engage into their connection points Clicking s...

Page 65: ... points The number and position of the connections vary depending on the model of the indoor unit Take care not to damage the bottom panel or scratch the main horizontal vane 2 Push the back of the bottom panel onto the indoor unit frame until its clips lock into the connection points 3 Push both sides of the bottom panel onto the indoor unit frame until its pins lock into the connection points 4 ...

Page 66: ...ontacts on either side of them 4 Reattach the back cover of the remote controller 5 Proceed with powering on the remote controller and use as needed Remove the bat teries if system won t be used for an extended time 1 Push down on tab 2 Lift cover 3 Insert 3 batteries Battery Cover Tab Battery Cover Figure 120 Installing the Remote Controller Batteries Performance Evaluation Operate the unit in he...

Page 67: ...turn the power back on to the system The system will operate in the selected mode To Cancel Installer Mode Method One 1 Follow steps above but use the cancel code numbers in the Canceling the Cooling Only Heating Only Modes table below Figure 123 Installer Mode Method One 1 Installer Modes Mode Code Number Cooling 45 Heating 47 Table 23 Setting the Cooling Only Heating Only Modes Table 24 Cancelli...

Page 68: ...d Two 2 Follow steps above but use the cancel code numbers in the Cancelling the Cooling Only Heating Only Modes table below Mode Code Number Cooling 45 Heating 47 Table 25 Setting the Cooling Only Heating Only Modes Table 26 Cancelling the Cooling Only Heating Only Modes Mode Code Number Cooling 46 Heating 48 Figure 124 Installer Mode Method Two 2 TEMP 10 digits 1 digit A ON OFF Step 3 Step 4 Ste...

Page 69: ...rating properly 5 Fully close the liquid piping service valve to the outdoor unit by rotating the valve clockwise with an Allen wrench 6 Observe the pressure gauge reading When it changes to 14 2 to 7 1 psig fully close the gas vapor service valve and then immediately turn the unit off Pump down procedure is complete and all refrigerant will be collected into the outdoor unit Do not operate the un...

Page 70: ... 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 valve operation indicator ...

Page 71: ...onnect to IDU with the 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 Error Codes LGMV software helps the service technician or commissioning...

Page 72: ...ucts You must understand the inverter air conditioning operation cycle the meaning of the data displayed by SIMs and how to use the data to troubleshoot the system The Duct Free System air conditioning system must run for at least 15 20 minutes before data collected by SIMs is valid for trouble shooting The free SIMs app must be correctly installed on the smart phone before using SIMs Some outdoor...

Page 73: ...tart 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 informa tion in graph format In formation displayed is for the IDU selected on the Main screen ODU Outdoor Unit Temperature and Fre quency graph Disp...

Page 74: ...horted out 4X 8X 53 Communication failure from outdoor unit to indoor unit 5X 3X 60 Outdoor unit printed circuit board PCB EEPROM check sum error 6X 61 Outdoor unit condenser coil temperature is too high 6X 1X 62 Outdoor unit inverter compressor PCB heat sink temperature is too high 6X 2X 63 Condenser coil pipe thermistor temperature is too low 6X 3X 65 Heat sink thermistor has disconnected or has...

Page 75: ...ir 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 indoor unit 5X 3X 60 Outdoor unit printed circuit boa...

Page 76: ...rs 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 life to recover recycle reclaim or destroy R410A refrigerant according to applicable US EPA rules Total System Refrigerant Charge To calculate the potential refrigerant concentration level RCL 1 Measure th...

Page 77: ...ed full port ball valves Schrader between the valve body and the indoor units used at the indoor unit and at will in the refrigerant piping Condensate Pump Drain Installation Description Check Condensate drain installed on indoor units Extended condensate piping material used is acceptable under local code Insulated to prevent condensation Indoor unit condensate drain pipes were installed correctl...

Page 78: ...chnologies 4300 North Point Parkway Alpharetta Georgia 30022 www lghvac com IM_SZ_WallMounted_ExtendedPiping_3HLV_08_20 Supersedes IM_SZ_WallMounted_ExtendedPiping_3HLV_03_20 IM_SZ_WallMounted_ExtendedPiping_3HLV_11_18 IM_ExtendedPiping_3HLV_09_18 IM_WallMounted_All_11_15 IM_WallMounted_All_08_15 IM WallMounted All 08 14 1 20001747 ISO 9001 2008 LG ELECTRONICS INC ...

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