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Refrigerant Piping Connections

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

REFRIGERANT PIPING CONNECTIONS

Piping Installation When Piping is on the Left Side

• See the Electrical System Installation section for information on

how to connect the communication / connection (power) cable from

the outdoor unit.

• For left-side piping, it is recommended that the communication /

power connections are complete before starting the piping connec-

tions.

1. Insert drain hose (feature could differ depending on model of

indoor unit).

2. Align the center of the refrigerant piping and corresponding con-

nection as shown on the “Connecting the Indoor Unit Refrigerant
Piping Page”.

3. Place a couple of drops 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”.

:KHQWLJKWHQLQJWKHÀDUHQXWZLWKDWRUTXHZUHQFKHQVXUHWKHGLUHFWLRQ

for tightening follows the arrow on the wrench.

5. Bundle the refrigerant piping, drain hose, and communication /

connection (power) cable together. Ensure that the drain hose is
located at the bottom of the bundle.
• If using a conduit for the power wiring / communications cable,

see the conduit information in the Electrical System Installation
section.

Positioning the drain hose at the top of the bundle can cause condensate

WRRYHUÀRZIURPWKHGUDLQSDQLQWKHLQVLGHRIWKHLQGRRUXQLW

Left Side Piping

Drain Hose

Piping

Connection

Cable

Tape

Drain Hose

Figure 50: Piping Installation When Piping is on the Left Side (Appear-

ances Will Vary Depending on Indoor Unit Model).

Indoor Unit Connections

Summary of Contents for LA090HYV3

Page 1: ...SINGLE ZONE ART COOL PREMIER WALL MOUNTED INSTALLATION MANUAL 1 1 4 1 1 2 and 2 Tons LA150HYV3 LA180HYV3 LA240HYV3 3 4 and 1 Tons LA090HYV3 LA120HYV3 ...

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: ...ill 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 ill ness 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: ...t 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 th...

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: ... Procedures 31 32 Refrigerant Piping Connections 33 48 Installation Overview 33 Special Applications 34 Outdoor Unit Connections 35 Indoor Unit Connections 36 40 Outdoor Unit Condensate Drain Hose 41 Indoor Unit Condensate Drain Hose 42 45 Bundling 46 Insulation 47 48 Electrical System Installation 49 59 6DIHW XLGHOLQHV RQQHFWLRQV DQG 6SHFL FDWLRQV 49 RQQHFWLRQV DQG 6SHFL FDWLRQV 50 53 Controller ...

Page 8: ...ed LG is a registered trademark of LG Corp GENERAL DATA Unit Nomenclature Single Zone Wall Mount Indoor and Outdoor Units LA N 090 HYV 3 Generation or Revision 1 First 2 Second 3 Third Indoor Outdoor Product HYV Art Cool Premier Nominal Capacity Nominal cooling capacity in Btu h 090 9 000 120 12 000 150 15 000 180 18 000 240 24 000 Type N Indoor Wall Mount Unit U Outdoor Heat Pump Unit Family LA A...

Page 9: ... 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 LAN090HYV3 LAN120HYV3 LAN150HYV3 LAN180HYV3 LAN240HYV3 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 S...

Page 10: ...ushless Digitally Controlled Direct Airflow Rate IDU Max H M L CFM 530 424 353 184 530 424 353 184 ODU Max CFM 1 730 1 730 Piping Liquid Line in OD 1 4 1 4 Vapor Line in OD 3 8 3 8 Condensation Line OD ID 25 32 19 32 25 32 19 32 Additional Refrigerant Charge oz ft 0 22 0 22 Pipe Length6 Minimum Maximum ft 9 8 65 6 9 8 65 6 Piping Length6 no add l refrigerant ft 24 6 24 6 Max Elevation Difference f...

Page 11: ... ODU Type Qty Propeller 1 Motor Drive Brushless Digitally Controlled Direct Airflow Rate IDU Max H M L CFM 813 601 495 389 813 601 495 389 813 601 495 389 ODU Max CFM 2 119 2 119 2 119 Piping Liquid Line in OD 3 8 3 8 3 8 Vapor Line in OD 5 8 5 8 5 8 Condensation Line OD ID 25 32 19 32 25 32 19 32 25 32 19 32 Additional Refrigerant Charge oz ft 0 38 0 38 0 38 Pipe Length6 Minimum Maximum ft 9 8 16...

Page 12: ...oor Fan Motor Cooling Heating W FLA W FLA 3 4 LA090HYV3 60 208 230 187 253 11 2 15 1 8 3 8 3 85 0 4 58 0 4 1 LA120HYV3 11 2 15 1 8 3 8 3 85 0 4 58 0 4 1 1 4 LA150HYV3 19 0 30 1 14 41 14 41 124 0 4 58 0 5 1 1 2 LA180HYV3 19 0 30 1 14 41 14 41 124 0 4 58 0 5 2 LA240HYV3 19 0 30 1 14 41 14 41 124 0 4 58 0 5 Table 2 Art Cool Premier Electrical Data Voltage tolerance is 10 Maximum allowable voltage unb...

Page 13: ...e 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 heat or steam...

Page 14: ...nstall and insulate 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 usin...

Page 15: ...han 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 LQHI FLHQW SHUI...

Page 16: ...lling the outdoor 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...

Page 17: ...s If a forklift is to transport the outdoor unit the forklift arms must pass through the openings at the bottom I D FUDQH LV WR VXVSHQG WKH RXWGRRU XQLW LW LV UHTXLUHG WKDW WZR URSHV DW OHDVW WZHQW WKUHH IHHW LQ OHQJWK EH XVHG 3DVV WKH URSHV XQGHU 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...

Page 18: ...ting the Outdoor Unit to the Platform 1 Ensure that 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...

Page 19: ...tion is taken into consideration Do not install near doorway YRLG LQVWDOOLQJ WKH XQLW QHDU KLJK IUHTXHQF JHQHUDWRUV 7KH XQLW PXVW QRW EH LQVWDOOHG ZKHUH VXOIXULF DFLG DQG ÀDPPDEOH RU FRU URVLYH JDVHV DUH JHQHUDWHG YHQWHG LQWR RU VWRUHG 7KHUH LV ULVN RI UH explosion and physical injury or death The unit will be damaged will malfunction and or will not operate as designed if installed in any of the ...

Page 20: ... WR DWWDFK LQGRRU XQLWV WR VKHHW URFN GU ZDOO SODVWHUERDUG tile plywood or similar materials without proper anchors Indoor units must be securely and prop HUO PRXQWHG DQFKRUHG PSURSHU LQVWDOODWLRQ ZLOO UHVXOW LQ GDPDJH WR WKH LQGRRU XQLW 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 6 Anchor Screw Sizes Figure 12 Art Cool Premier Wall Mount LAN090HYV3 LAN120HYV3...

Page 21: ...the outdoor unit side 4 Finish off the newly drilled hole as shown with bushing and sleeve covering to prevent damage to the insulation and piping 3 16 5 16 Indoor WALL Outdoor Bushing Core Drill Sleeve Figure 19 Drilling Piping Hole Indoor Unit Mounting Preparing the Piping and Power Wiring Communication Connection Cable After the length between the indoor unit and the outdoor unit has been measu...

Page 22: ...o the installation plate successfully Figure 20 Attaching the Indoor Unit to the Installation Plate Figure 21 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 DOOLQJ LQGRRU XQLWV FDQ FDXVH ERGLO LQMXU RU GHDWK To avoid a gap between the installation plate and t...

Page 23: ... the most critical elements of a single zone system is the refrigerant piping If the con nection 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 Art Cool Premier Wall Mount refrigerant pipe system Refer to the figure for maximum length and elevati...

Page 24: ...ed Copper 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 10 ACR Copper Tubing Dimensions and Physical Characteristics1 3 Nominal Pipe Outside Diameter in Actual Outside Di...

Page 25: ...int 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 bend is Linear pipe expansion can be calculated using the following formula 1 From the table Linear Thermal Expansion of Copper Tubing in Inches find the row corr...

Page 26: ...95 1 00 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...

Page 27: ...rant 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 system ...

Page 28: ...e length 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 i...

Page 29: ... 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 compression of th...

Page 30: ...filtration Refrigerant 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 14 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 thic...

Page 31: ... 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 90 Sla...

Page 32: ...all orifices 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 as sembling 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 materia...

Page 33: ...k 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 pipe support spacing lengths as shown in the General Refrigerant Piping System Information section Refer to the Pipe Supports section for information on using clamps and pipe support materials Alway...

Page 34: ...e a piping set cover 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 ...

Page 35: ...de cover that protects the piping connections and the electrical components This side cover must be removed for piping and electrical connections LAU150HYV3 LAU180HYV3 LAU240HYV3 outdoor units have a side panel that covers its electrical components 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 i...

Page 36: ...ch to the indoor unit at several connection points The number and position of the con nections vary depending on the model of indoor unit 3 Hold the center of the bottom panel and pull it towards to disen gage the pins releasing them from the connection points 4 Pull both sides of the bottom panel out to release the pins from the connections being careful not to damage the bottom panel or scratch ...

Page 37: ...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 the indoor unit p...

Page 38: ... 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 For systems with wiring greater than 130 feet see the Communication Connection Power Cable Specifications from Outdoor Unit to Indoor Unit in the Electrical System Installati...

Page 39: ...rant 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 tightening follows the ...

Page 40: ...ing 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 Connect ing the Indoor Unit Refrigerant Piping Page KHQ WLJKWHQLQJ WKH ÀDUH QXW ZLWK D WRUTXH ZUHQFK HQVXUH WKH GLUHFWLRQ IRU tightening follows the arrow on the wrench 5 Bundle the refrigerant p...

Page 41: ...lling Outdoor Unit Drain Plug Piping 1 See diagrams at right for drain connection drain caps and drain washer locations on the outdoor units 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 supplied vinyl condensate piping to the outdoor unit drain connection If the field supplied ...

Page 42: ...and code requirements 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 d...

Page 43: ... 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 Drain Hose Install...

Page 44: ...en the field supplied 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 ...

Page 45: ...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 drain hose If leaks ...

Page 46: ...ble 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 binding 3 Wrap the rear piping se...

Page 47: ...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 Pressure Vapor 95 220 ...

Page 48: ... LQFK 1 2 inches 1 2 inches 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 18 Minimum Refrigerant Pipe EPDM Insulation Wall Thickness Requirements 1 R QRW LQVXODWH JDV DQG OLTXLG SLSHV WRJHWKHU DV WKLV FDQ UHVXOW LQ...

Page 49: ... ground wire to refrigerant gas or water piping to lightning rods to telephone ground wiring or to the building plumbing 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 wir ing Properly ground the ...

Page 50: ...he instructions 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 wir ing or cable but provide some slack to facilitate removing the electrical panels while servic ing and to prevent external forces from damaging...

Page 51: ...heat and or cause a fire resulting in physical injury or death Use heat proof electrical wire capable of withstanding temperatures up to 167 F to avoid wiring malfunction and electrical shock which will 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 electrical equipmen...

Page 52: ...r unit Never apply 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 ...

Page 53: ...d Engineering Manual or contact an LG representative for more information connect to the Single Zone Art Cool Premier 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 cable that connects to the indoor unit terminal block must...

Page 54: ...nit 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 connections vary dependin...

Page 55: ... 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 those of the outdoor unit See also indoor unit wiring...

Page 56: ... power wiring 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 Forsystemswithwiringgreaterthan130feet seethe Communication Connection Power CableSpec ifications from Outdoor Unit to Indoor Unit in the Ele...

Page 57: ...w from the drain pan in the inside of the indoor unit If a conduit is not used see this section or in the Refrigerant Piping Connections for refrigerant piping condensate drain power wiring 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 unit to the term...

Page 58: ...n 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 circuit diagram on the outdoor unit panel Connecting Outdoor Unit Power Wiring and Communication Connection Power Cable 1 Con...

Page 59: ...outdoor unit and the communication connection power cable to the indoor unit in the same conduit Use separate conduits for the separate access holes Communica tion problems will occur 8 Using a JIS screwdriver securely connect wires as shown See also indoor unit wiring diagram found on its bottom cover and outdoor unit wiring diagram on the inside of its chassis cover Each wire must be individuall...

Page 60: ...tem must not be 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 a...

Page 61: ...ation using refrigerant Use only a vacuum pump that can reach 500 microns vacuum rated hoses or copper tubing and D OHDN IUHH JDXJH PDQLIROG VHW 8VH RQO QHZ YDFXXP SXPS RLO IURP D SURSHUO VHDOHG XQRSHQHG FRQWDLQHU DQG FKDQJH RLO LQ 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 ope...

Page 62: ...o 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 pip ing and connected indoor unit Never perform evacuation using refrigerant 8VH RQO D YDFXXP SXPS WKDW FDQ UHDFK PLFURQV YDFXXP UDWHG KRVHV RU FRSSHU WXELQJ DQG D OHDN IUHH JDXJH PDQLIROG VHW 8VH RQO QHZ YDFXXP SXPS RLO IURP D SURSHUO VHDOHG XQRSHQH...

Page 63: ...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 nitrogen purge for an approp...

Page 64: ...n 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 pressure hose from the outdoor unit 1HYHU LQ...

Page 65: ...th 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 sounds could be...

Page 66: ... frame connection 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 clips lock into the co...

Page 67: ...r 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 123 Installing the Remote Controller Bat teries Performance Evaluation Operate the unit in heating and or co...

Page 68: ... seconds and then 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 Cancelling the Cooling Only Heating Only Modes table below Figure 126 Installer Mode Method One 1 Installer Modes Mode Code Number Cooling 45 Heating 47 Table 21 Setting the Cooling Only Heating Only Mode...

Page 69: ...w 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 23 Setting the Cooling Only Heating Only Modes Table 24 Cancelling the Cooling Only Heating Only Modes Mode Code Number Cooling 46 Heating 48 Figure 127 Installer Mode Method Two 2 TEMP 10 digits 1 digit A ON OFF Step 3 Step 4 Step 5 TEMP A St...

Page 70: ... compressor is operating 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 ...

Page 71: ...door 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 light Pressure graph s...

Page 72: ...ser has the option to connect 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 tech...

Page 73: ...nd 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 units have an LGMV ex...

Page 74: ...nt Voltage EEV Mode 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 informa tion in graph format In formation displayed is for the IDU selected on the Main screen ODU Outdoor Unit Temperature an...

Page 75: ...or optional 4X 5 Communication error between indoor unit and outdoor units 5X 6 Indoor unit outlet pipe sensor error 6X 9 Indoor unit EEPROM error 9X 10 Indoor unit BLDC motor fan lock 1X 12 Indoor unit middle pipe sensor error 2X 1X 21 DC Peak IPM Fault Compressor DC voltage was too high 2X 1X 22 Current Transformer2 CT2 error Alternating current AC input too high 2X 2X 23 DC Link Low Volt 2X 3X ...

Page 76: ... 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 indoor unit 5X 3X 60 Outdoor u...

Page 77: ...LQHHUV QF 6 5 WODQWD 6 5 QF QIRUPDWLRQ DERXW 6 5 6WDQGDUG DQG DGGHQGD FXUUHQW DV RI WKH GDWH RI WKLV SXEOLFDWLRQ 7DNH DSSURSULDWH DFWLRQV DW WKH HQG RI 9 HTXLSPHQW OLIH WR UHFRYHU UHF FOH UHFODLP RU GHVWUR 5 UHIULJHUDQW DFFRUGLQJ WR DSSOLFDEOH 86 3 rules Total System Refrigerant Charge To calculate the potential refrigerant concentration level RCL 1 Measure the occupied space dimensions in feet 2 ...

Page 78: ...al High quality R 410A rated 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 pip...

Page 79: ...For further technical materials such as submittals engineering manuals service manuals and catalogs visit www lghvac com ...

Page 80: ...upersedes IM_SZ_ArtCoolPremier_HYV1_4_16 IM_SZ_ArtCoolPremier_HYV1_6_15 LG Electronics U S A Inc Air Conditioning Technologies 4300 North Point Parkway Alpharetta Georgia 30022 www lghvac com 20001747 ISO 9001 2008 LG ELECTRONICS INC ...

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LG LA090HYV3, Installation Manual

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Summary of Contents for LA090HYV3

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