LG LS090HSV4 Engineering Manual Download Page 53

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reFrIGerant deSIGn | 53

Refrigerant Piping Design & Layout Best Practices

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

AcronyMS

ABS

Acrylonitrile Butadiene Styrene

H/M/L

High/Medium/Low

Air Conditioner

HVAC

Heating, , Ventilation and Air Conditioning

ACP

Advanced Control Platform

IDU

Indoor Unit

ASHRAE

American Society of Heating, Refrigeration, and

Air Conditioning

ISo

International organization for Standardization

AWG

American Wire Gauge

Kilo Watts

BLDC

Brushless Digitally Controlled/Direct

LED

Light Emitting Diode

Btu/h

British Thermal Units per hour

MBh

Thousands BTUs per hour

BUS

Binary Unit System

MCA

Maximum Circuit Ampacity

CFM

Cubic Feet per Minute

MoP

Maximum overcurrent Protection

CoP

Coefficient of Performance

oDU

outdoor Unit

Combination Ratio

PCB

Printed Circuit Board

Dry Bulb

PCM

Pre-Coated Metal

dB(A)

Decibels with “A” frequency weighting

PDI

Power Distribution Indicator

DDoAS

Decoupled Dedicated outdoor Air

Power Input

Digital output

PTAC

Packaged Terminal Air Conditioner

DPST

Double-Pole Single-Throw (switch)

PVC

Polyvinyl Chloride

EEV

Electronic Expansion Valve

USB

Universal Serial BUS

ELF

Equivalent Length in Feet

VAC

Voltage Alternating Current

ESP

External Static Pressure

VAV

Variable Air Volume

ETL

Electronic Testing Laboratories

VRF

Variable Refrigerant Flow

HIPS

High Impact Polystyrene

Wet Bulb

Table 25: Table of Acronyms.

Summary of Contents for LS090HSV4

Page 1: ...Single zone HIGH Efficiency WALL MOUNT Engineering Manual 3 4 1 and 1 1 2 Tons Models LS090HSV4 LS120HSV4 LS180HSV4 ...

Page 2: ...l as all reports illustrations data information and other materials are the property of LG Electronics U S A Inc and are disclosed by LG Electronics U S A Inc only in confidence This document is for design purposes only A summary list of safety precautions is on page 4 For more technical materials such as submittals catalogs installation owner s and service manuals visit www lghvac com ...

Page 3: ...art alternative to both central HVAC and window mounted air conditioners These inverter heat pump systems are available in a variety of configurations to suit different cooling and heating situations Installation by a qualified HVAC contractor is safe and easy little to no duct work or sheet metal is required Inverter Systems LG Single Zone Inverter Wall Mount air source systems offer the opportun...

Page 4: ...cessories 26 28 Performance Data 30 34 Equipment Selection Procedure 36 37 Building Ventilation Design Guide 38 39 Placement Considerations 40 42 Refrigerant Piping Design 44 45 Installation Layout Best Practices 46 49 Electrical Connections 50 Mechanical Specifications 52 Acronyms 53 TABLE OF Symbols This symbol indicates an imminently hazardous situation which if not avoided will result in death...

Page 5: ...Introduction Architectural Appeal on page 6 ...

Page 6: ...city range of 3 4 to 1 1 2 tons These are best suited for applications with zones that require heating or cooling such as residential and small business office buildings Single zone wall mount outdoor and indoor units are available in 208 230V 60Hz 1Ph Adaptable and Flexible Single zone wall mount duct free split DFS systems allow cooling or heating for the entire residence or just a single room w...

Page 7: ...l Data on page 10 Electrical Data on page 12 Functions Controls Options on page 13 Outdoor Unit Dimensions on page 14 Indoor Unit Dimensions on page 16 Acoustic Data on page 18 Refrigerant Flow Diagrams on page 20 Wiring Diagrams on page 22 Accessories on page 26 Product data ...

Page 8: ...iver an appropriate amount of cooling to the indoor unit Precise refrigerant volume delivery translates into long periods with coil surface temperatures below dew point and minimizes compressor and fan component run time which may lead to lower utility usage Simplified Installation Cooling and heating applications that use single zone systems simplify and reduce the mechanical and control system d...

Page 9: ...door Units LS N 090 HSV 4 Generation 2 Second 3 Third 4 Fourth Indoor Outdoor Product HEV Mega HXV Mega 115V HYV Art Cool Premier HVP Art Cool Gallery HSV3 4 High Efficiency HSV2 Art Cool Mirror HV Standard HLV Extended Pipe Nominal Capacity Nominal cooling capacity in Btu h 090 091 9 000 120 121 12 000 180 181 18 000 240 24 000 307 30 000 360 36 000 Type N Indoor Wall Mount Unit U Outdoor Heat Pu...

Page 10: ...Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp General Data The following tables show the available outdoor and indoor units along with the factory provided controllers Table 1 Single Zone High Efficiency System Pairing Table Outdoor Unit Model Indoor Unit Model Controller LSU090HSV4 LSU120HSV4 LSN090HSV4 LSN120HSV4 AKB73835317 LSU180HSV4 LSN180HSV4 AKB73835317...

Page 11: ...1 Motor Drive Brushless Digitally Controlled Direct Airflow Rate IDU Max H M L CFM 423 353 272 191 423 353 272 191 735 622 509 399 ODU Max CFM 1 165 1 165 2 119 Piping Liquid Line in OD 1 4 1 4 3 8 Vapor Line in OD 3 8 3 8 5 8 Condensation Line OD ID 27 32 5 8 27 32 5 8 27 32 5 8 Additional Refrigerant Charge oz ft 0 22 0 22 0 38 Pipe Length6 Minimum Maximum ft 6 6 65 6 6 6 65 6 9 84 98 4 Piping L...

Page 12: ...s U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp Electrical Data Model Number Nom Tons Compressor Qty Compressor A Cool Heat Fan Qty ODU Fan A IDU Fan A MCA A MOP A LS090HSV4 3 4 1 8 3 8 3 1 0 40 0 40 10 15 LS120HSV4 1 1 8 3 8 3 1 0 40 0 40 10 15 LS180HSV4 1 1 2 1 14 6 14 6 1 0 25 0 40 19 25 Table 3 Single Zone High Efficiency Unit Electrical Data ...

Page 13: ... P control X X X Electric heater X X X High ceiling X X X Defrost Low ambient Hot start Self diagnostics Soft dry dehumidification Auto changeover Auto clean coil dry Auto restart Child lock X X X Forced operation Sleep mode Timer 24hr on off Weekly timer X X X Two thermistor control X X X Controllers Wireless Remote Controller Simple Controller with Mode Selection o o o Simple Controller without ...

Page 14: ...ge without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp OUTDOOR UNIT DIMENSIONS LSU090HSV4 LSU120HSV4 30 5 16 22 4 3 16 13 15 16 6 3 32 2 3 32 10 15 16 1 20 7 8 21 1 2 10 1 2 9 3 8 19 15 16 2 7 8 8 3 32 4 3 2 5 11 5 16 5 3 4 Ø18 5 16 Center of gravity Unit inch Discharge Air Grille ...

Page 15: ...G Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp OUTDOOR UNIT DIMENSIONS LSU180HSV4 34 1 4 21 1 2 12 19 32 14 3 16 6 5 16 2 3 16 13 1 8 31 1 2 30 7 8 15 7 16 13 3 4 21 1 8 3 1 8 2 Ø 20 7 8 Item No Part Name 1 Discharge air grille 2 3 4 5 6 12 5 8 5 7 8 Center of gravity Unit inch ...

Page 16: ...Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp Indoor Unit Dimensions LSN090HSV4 LSN120HSV4 Ø2 9 16 5 3 16 3 6 8 Right rear piping Left rear piping Place a level on raised tab Unit Outline 8 1 2 6 7 8 17 3 8 17 3 8 3 34 7 8 8 1 4 1 3 4 2 2 3 16 1 3 4 2 3 8 2 11 1 4 2 1 4 2 5 16 6 5 16 5 7 8 Ø2 9 16 Unit inch Return Air Grille Knockout hole for piping and cables...

Page 17: ...d Cliffs NJ All rights reserved LG is a registered trademark of LG Corp Indoor Unit Dimensions LSN180HSV4 40 9 16 12 13 16 9 3 16 Ø2 9 16 Right rear piping Left rear piping Measuring Tape Measuring Tape Hanger Place a level on raised tab Unit Outline 18 1 8 22 3 8 8 1 8 4 1 8 2 11 16 2 3 16 Ø2 9 16 4 9 3 4 2 1 2 1 3 4 2 1 32 2 1 32 1 3 4 Unit inch Return Air Grille ...

Page 18: ...ested in an anechoic chamber under ISO Standard 3745 Sound level will vary depending on a range of factors including the construction acoustic absorption coefficient of a particular room in which the unit was installed Octave Band Center Frequency Hz Octave Band Sound Pressure Level 0dB 20μPa 10 20 30 40 50 60 70 80 Octave Band Sound Pressure Level 0dB 20μPa 10 20 30 40 50 60 70 80 63 125 250 500 ...

Page 19: ... NC 40 NC 45 NC 50 NC 55 NC 60 NC 65 Approximate Hearing Threshold 10 20 30 40 50 60 70 80 63 125 250 500 1000 2000 4000 8000 Octave Band Sound Pressure Level 0dB 20μPa Octave Band Center Frequency Hz NC 15 NC 20 NC 25 NC 30 NC 35 NC 40 NC 45 NC 50 NC 55 NC 60 NC 65 Approximate Hearing Threshold Octave Band Sound Pressure Level 0dB 20μPa Octave Band Center Frequency Hz 10 20 30 40 50 60 70 80 63 1...

Page 20: ...rator inlet temperature thermistor TH3 Evaporator middle temperature thermistor CN TH2 Indoor TH4 Evaporator outlet temperature thermistor TH5 Water level sensor optional CN TH3 Indoor TH6 Outdoor air temperature thermistor CN TH1 Outdoor TH7 Condensing temperature thermistor CN TH2 Outdoor TH8 Discharge pipe temperature thermistor FIELD PIPING Ø1 4 Copper Tubing FIEL D PIPING Ø3 8 Copper Tubing M...

Page 21: ...r TH3 Evaporator middle temperature thermistor CN TH2 Indoor TH4 Evaporator outlet temperature thermistor TH5 Water level sensor optional CN TH3 Indoor TH6 Outdoor air temperature thermistor CN TH1 Outdoor TH7 Condensing temperature thermistor TH8 Discharge pipe temperature thermistor CN TH2 Outdoor FIELD PIPING Ø 3 8 Copper Tubing FIELD PIPI NG Ø5 8 Copper Tubing M M Heat Exchanger Evapor ator He...

Page 22: ...tinuous 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 LSN090HSV4 LSN120HSV4 Wiring Diagrams Auxiliary heater relay kit is not available on single zone wall mounted models ...

Page 23: ...nnovation 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 LSN180HSV4 Wiring Diagrams Auxiliary heater relay kit is not available on single zone wall mounted models ...

Page 24: ... 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 LSU090HSV4 LSU120HSV4 Wiring Diagrams Factory Wiring Field Wiring Optional ...

Page 25: ...e 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 LSU180HSV4 WIRING DIAGRAMS ...

Page 26: ...Q Black 164 Allows control of indoor unit on off fan speed and temperature setpoint for up to 16 indoor units PQRCHCA0QW White LG Programmable Thermostat PREMTB10U White 164 Allows control of indoor unit on off operation mode occupied and unoccupied temperature setpoints fan speed and airflow direction for up to 16 indoor units Programmable schedule with 5 events per day with control of occupied u...

Page 27: ...hermo On Off Mode Fan Speed Run Status Error Status Enables the indoor unit to be controlled and monitored by a third party thermostat or controller PI 485 V net Control Integration Board PMNFP14A0 Outdoor Unit Control integration to LG V net controls AC Smart Premium ACP BACnet LonWorks etc Digital Output DO Kit PQNFP00T0 Comm Bus On Off 0 1 One 25A DPST normally open relay Used with central cont...

Page 28: ...n accessory cable without the need for a separate interface device The main screen for LGMV shall allow user to view the following real time data on one screen Additional screens can be accessed by tabs on the main screen 1 Cycleview Graphic of internal components including 2 Setting Converts metric values to imperial values 3 Making Data Recording of real time data to a separate file created to b...

Page 29: ... Cooling Capacity on page 30 Heating Capacity on page 32 Air Flow and Temperature Distributions Graphs on page 33 PERFORMANCE DATA ...

Page 30: ... 8 19 0 74 105 6 77 5 45 0 62 7 31 5 88 0 64 7 84 6 32 0 66 8 38 6 75 0 68 8 77 7 06 0 70 9 45 7 61 0 73 9 99 8 04 0 75 110 6 59 5 30 0 63 7 12 5 73 0 65 7 66 6 16 0 67 8 19 6 60 0 69 8 58 6 91 0 71 9 26 7 46 0 74 9 80 7 89 0 76 115 6 40 5 15 0 63 6 94 5 58 0 65 7 47 6 01 0 67 8 01 6 44 0 69 8 39 6 76 0 71 9 08 7 31 0 74 9 61 7 74 0 77 118 6 21 5 00 0 64 6 75 5 43 0 66 7 20 5 80 0 68 7 74 6 23 0 7...

Page 31: ... 15 50 0 92 45 14 02 11 29 0 81 15 00 12 08 0 83 15 99 12 87 0 86 16 81 13 53 0 89 17 28 13 91 0 91 18 69 15 05 0 95 19 84 15 97 0 98 50 14 49 11 67 0 85 15 50 12 47 0 88 16 50 13 28 0 91 17 30 13 93 0 94 17 79 14 32 0 96 19 21 15 47 1 00 20 42 16 44 1 03 55 14 96 12 05 0 90 15 99 12 87 0 93 17 02 13 70 0 96 17 80 14 33 0 99 18 30 14 73 1 02 19 73 15 88 1 06 21 00 16 91 1 09 60 15 44 12 43 0 95 16...

Page 32: ... 0 89 41 38 12 96 0 98 12 56 0 97 12 43 0 97 12 31 0 96 12 22 0 96 11 97 0 95 11 69 0 95 43 40 13 37 1 00 12 97 0 99 12 83 0 99 12 71 0 98 12 61 0 98 12 36 0 97 12 06 0 97 47 43 14 00 1 02 13 57 1 01 13 43 1 01 13 30 1 00 13 20 1 00 12 93 0 99 12 63 0 99 53 50 14 14 1 03 13 71 1 02 13 57 1 02 13 43 1 01 13 33 1 01 13 06 1 00 12 75 1 00 59 53 14 46 1 04 14 02 1 03 13 88 1 03 13 74 1 02 13 63 1 02 1...

Page 33: ...ft 3 3ft 6 6ft 9 8ft 13 1ft 16 4ft 8 9ft 6 6ft 4 0ft 0ft Air velocity ft s Temperature F 2 5 3 3 3 9 1 6 82 4 84 2 86 0ft 3 3ft 6 6ft 9 8ft 13 1ft 16 4ft 0ft 3 3ft 6 6ft 9 8ft 13 1ft 16 4ft 8 9ft 6 6ft 4 0ft 0ft 8 9ft 6 6ft 4 0ft 0ft Based on maximum air flow Air velocity ft s Temperature F 2 5 4 1 3 3 4 9 1 6 77 75 2 73 4 8 9ft 6 6ft 4 0ft 0ft 0ft 3 3ft 6 6ft 9 8ft 13 1ft 16 4ft 0ft 3 3ft 6 6ft 9...

Page 34: ...s Graphs LSN180HSV4 Air velocity ft s 19 7ft 23ft 26 2ft 19 7ft 23ft 26 2ft Temperature F 2 5 4 1 3 3 4 9 1 6 77 75 2 73 4 8 9ft 6 6ft 4 0ft 0ft 8 9ft 6 6ft 4 0ft 0ft 0ft 3 3ft 6 6ft 9 8ft 13 1ft 16 4ft 0ft 3 3ft 6 6ft 9 8ft 13 1ft 16 4ft Air velocity ft s Temperature F 2 5 4 1 3 3 4 9 1 6 82 4 84 2 86 87 8 8 9ft 6 6ft 4 0ft 0ft 8 9ft 6 6ft 4 0ft 0ft 0ft 3 3ft 6 6ft 9 8ft 13 1ft 16 4ft 19 7ft 23ft...

Page 35: ... Equipment Selection Procedure on page 36 Building Ventilation Design Guide on page 38 Placement Considerations on page 40 Application Guidelines ...

Page 36: ... the indoor unit Also determine the elevation difference of the indoor unit above or below the outdoor unit Find corresponding cooling or heating capacity correction factors as shown in Figures 5 8 Multiply the correction factors by the cooling or heating capacity obtained from the capacity tables using design conditions The resultant is the NET cooling or heating capacity Equipment Selection Proc...

Page 37: ... Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp Figure 7 LS180HSV4 Cooling Coefficient Factor Cooling Heating 18k Total Pipe Length ft 100 95 90 24 6 100 95 18k Total Pipe Length ft Capacity Capacity 65 6 98 4 24 6 65 6 98 4 Figure 8 LS180HSV4 Heating Coefficient Factor Equipment Selection Procedure ...

Page 38: ...lation air pretreatment system refer to the article Selecting DOAS Equipment with Reserve Capacity by John Murphy published in the ASHRAE Journal April 2010 Method 1 Decoupled Dedicated Outdoor Air System DDOAS Advantages May be used with single zone systems The outdoor air unit may supply neutral air to the occupant space even when the single zone system indoor unit fan changes speed or cycles on...

Page 39: ...tioned Outdoor Air Non Ducted Method 3 Unconditioned Outdoor Air Non Ducted Fan Assisted Ventilation When approved by local codes the fan assisted ventilation method uses exhaust fans to remove air from the building and outdoor air is drawn into occupied spaces through a wall louver or gravity roof intake hood Supply fans can also be used to push the outdoor air into the space and building positiv...

Page 40: ... so that its airflow fans are not buried by direct heavy snowfall If snow piles up and blocks the airflow the system may malfunction 3 Remove any snow that has accumulated by 4 inches or more on the top of the outdoor unit 4 Place the outdoor unit on a raised platform at least 20 inches higher than the average annual snowfall for the area In environments where there is a possibility of heavy snow ...

Page 41: ...onnection Top of Unit Foundation Mounting Platform The underlying structure or foundation must be designed to support the weight of the unit Avoid placing the unit in a low lying area where water may accumulate When installing the outdoor unit on the wall or roof top anchor the mounting base securely to account for wind earthquake or vibration Tie Downs and Wind Restraints The strength of the Duct...

Page 42: ... unit under an overhang awning sunroof or other roof like structure observe the clearance requirements as shown in Figure 15 for height in relation to the unit This clearance ensures that heat radiation from the 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 ...

Page 43: ... Refrigerant Piping Design on page 44 Installation Best Layout Practices on page 46 Electrical Connections on page 50 REFRIGERANT PIPING DESIGN AND BEST LAYOUT PRACTICES ...

Page 44: ...es 20 inches Elevation All Elevation Limitations are Measured in Actual Feet If outdoor unit is above indoor unit 32 8 32 8 49 2 If outdoor unit is below indoor unit 32 8 32 8 49 2 Additional Refrigerant Needed oz ft 0 22 0 22 0 38 Figure 18 Single Zone System Layout Outdoor unit Indoor unit A B Outdoor unit Indoor unit A B Max Length A Max Elevation B Unit Feet Pipe Length1 Fluid Temperature F 35...

Page 45: ...nt pipe length of each pipe segment Using Elbows Field supplied elbows are allowed as long as they are designed for use with R410A refrigerant The designer however should be cautious with the quantity and size of fittings used and must account for the additional pressure losses in equivalent pipe length calculation The equivalent pipe length of each elbow must be added to each pipe segment See Tab...

Page 46: ...ld provided pipe supports must 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 o...

Page 47: ...ight protective sleeve to prevent insulation deterioration and water infiltration Refrigerant pipe installed inside underground casing must be continuous without any joints Underground refrigerant pipe must be located at a level below the frost line Figure 25 Typical Arrangement of Refrigerant Pipe and Cable s in a Utility Conduit Table 21 Utility Conduit Sizes 1 OD pipe diameter in inches Values ...

Page 48: ...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 4 Finish tightening the flare nut with a torque wrench until the wrench clicks See Figure 28 Figure 26 Outdoor Unit Connection Cover Removal Tubing Cover When tightening the flare nut with a torque wrench ensure the direc tion for tightening follows th...

Page 49: ... lines shall be insulated separately Insulation shall be a minimum 1 2 thick and thickness may need to be increased based on ambient conditions and local codes All insulation joints shall be glued with no air gaps Insulation material shall fit snugly against the refrigeration pipe with no air space between it and the pipe Insulation passing through pipe hangers inside conduit and or sleeves must n...

Page 50: ... the unit Ensure you connect the wire firmly Loose wiring may cause unit malfunction the wires to burnout or the terminal to overheat and catch fire There is a risk of equipment malfunction or property damage Use outdoor and waterproof connection cable rated up to 300V for the connec tion between the indoor and outdoor unit to avoid damage to unit Comply with local codes while running wire from th...

Page 51: ... Mechanical Specifications on page 52 Acronyms on page 53 Technical Data ...

Page 52: ... with factory installed components including a refrigerant strainer four way reversing valve electronic controlled expansion valve EEV high and low side charging ports service valves and interconnecting piping Refrigeration Oil Control Heat pump outdoor units have a centrifugal oil separator and controls to ensure sufficient oil supply is maintained and that oil does not travel with the refrigeran...

Page 53: ...Emitting Diode Btu h British Thermal Units per hour MBh Thousands BTUs per hour BUS Binary Unit System MCA Maximum Circuit Ampacity CFM Cubic Feet per Minute MOP Maximum Overcurrent Protection COP Coefficient Of Performance ODU Outdoor Unit CR Combination Ratio PCB Printed Circuit Board DB Dry Bulb PCM Pre Coated Metal dB A Decibels with A frequency weighting PDI Power Distribution Indicator DDOAS...

Page 54: ...ad Alpharetta Georgia 30009 www lghvac com EM SZ HighEfficiencyWallMount HSV4 3 15 Supersedes EM SZ HighEfficiencyWallMount HSV4 1 15 20001747 ISO 9001 2008 LG ELECTRONICS INC LG Electronics Commercial Products Support 1 888 865 3026 USA Follow the prompts for commercial A C products ...

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