LG MULTI V S ARUN072BSS5 Engineering Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. Heat Pump
  5. MULTI V S ARUN072BSS5
  6. Engineering manual

LG MULTI V S ARUN072BSS5 Engineering Manual

Three-phase heat pump outdoor unit
Hide thumbs
Table of Contents

Advertisement

Quick Links

THREE-PHASE
HEAT PUMP
OUTDOOR UNIT
ENGINEERING MANUAL
Variable Refrigerant Flow
208-230V, 60 Hz, 3-Phase Outdoor Units
6.0 and 8.0 Tons

Advertisement

Table of Contents
loading

Related Manuals for LG MULTI V S ARUN072BSS5

Summary of Contents for LG MULTI V S ARUN072BSS5

  • Page 1 THREE-PHASE HEAT PUMP OUTDOOR UNIT ENGINEERING MANUAL Variable Refrigerant Flow 208-230V, 60 Hz, 3-Phase Outdoor Units 6.0 and 8.0 Tons...
  • Page 2 LATS software programs, and more, log in to 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS THREE-PHASE Unit Nomenclature .......................................... 4 LG Air Conditioner Technical Solution (LATS) ................................. 5-6 Refrigerant Charge Worksheet ...................................... 7 Outdoor Unit Product Data ....................................... 8-23 ....................................... 9-10 ......................................11 Electrical Data ..........................................12 Dimensions / Center of Gravity ....................................13 Wiring Diagram ...........................................

  • Page 4: Unit Nomenclature

    UNIT NOMENCLATURE THREE-PHASE Outdoor Units Outdoor Units (ODU) Family ARU = Multi V Outdoor Unit (Refrigerant R410A) Type N = Heat Pump Capacity (Mbh) 072 = 72 096 = 96 Electrical Ratings B = 208–230V/60Hz/3Ph Type S =Standard Airflow Configuration S = Side Discharge Generation 5 = Fifth...

  • Page 5: Lg Air Conditioner Technical Solution (Lats)

    LG offers, free of charge, LG Air Conditioner Technical Solution (LATS) software—a total design solution for LG air conditioning systems. To reduce the risk of designing an improper applied system or one that will not operate correctly, LG requires that LATS software be used on all projects.
  • Page 6 LATS can generate an Excel GERP report that can imported into the LG SOPS pricing and ordering system.

  • Page 7: Refrigerant Charge Worksheet

    REFRIGERANT CHARGE WORKSHEET THREE-PHASE Multi V S Three-Phase System R410A Refrigerant Charge Calculator (lbs.) Job Name: __________________________________________ System Tag or ID: Project Manager: ____________________________________ Date: ______________ Line # Description Chassis I.D. Size Quantity CF (Ref.) Total (lbs.) Linear feet of 1/4" liquid line tubing —...

  • Page 8: Outdoor Unit Product Data

    PRODUCT DATA Mechanical Specifications on page 9 General Data on page 11 Electrical Data on page 12 Dimensions / Center of Gravity on page 13 Wiring Diagram on page 14 Refrigerant Flow Diagrams on page 15 Acoustic Data on page 18 Accessories on page 20...

  • Page 9: Mechanical Specifications

    LG. The frequency provides three pre-programmed fan speeds. DIP Switch adjustable inverter is designed by LG and is capable of providing a modulation settings limit night time (off peak) fan speed to reduce fan generated range for 6 and 8 tons from 15 Hz to 120 Hz (cooling) and 20 noise by up to 10 dB(A).
  • Page 10 A power conditioning circuit is provided and designed to protect the provides unit tag identification when integrating with LG VNet control unit’s inverter compressor and outdoor unit fan motors from phase devices.

  • Page 11: General Data

    Rated capacity is certified under AHRI Standard 1230. See www.ahrinet.org for information. LG requires that LATS software be used on all projects to ensure correct line sizing. Designer must verify the shop drawing design against the as built design using LATS. Contractor must also use LG Cooling with the Low Ambient Wind Baffle (sold separately) is covered to -9.9°F.

  • Page 12: Electrical Data

    ELECTRICAL DATA THREE-PHASE Table 2: 208-230V, 60Hz, 3-Phase Outdoor Unit Electrical Data. Compressor Motor Outdoor Unit Fan Motor Nominal Tons Unit Model No. MOCP Motor Amps Amps Quantity Fan Qty. RLA (Ea.) FLA x Qty. ARUN072BSS5 17.6 1.2 x 2 24.4 ARUN096BSS5 18.6...

  • Page 13: Dimensions / Center Of Gravity

    DIMENSIONS / CENTER OF GRAVITY THREE-PHASE Figure 4: ARUN072BSS5 and ARUN096BSS5 Dimensions. PRODUCT DATA | 13 ©...

  • Page 14: Wiring Diagram

    WIRING DIAGRAM THREE-PHASE Figure 5: ARUN072BSS5 and ARUN096BSS5 Wiring Diagram. 14 | PRODUCT DATA ©...

  • Page 15: Refrigerant Flow Diagrams

    REFRIGERANT FLOW DIAGRAMS THREE-PHASE Cooling Operation Figure 6: ARUN072BSS5 and ARUN096BSS5 Cooling Refrigerant Diagram. Cooling Operation Indoor HEX Indoor HEX Indoor Unit Indoor Unit High Temp. High Pressure Vapor High Temp. High Pressure Liquid Low Temp. Low Pressure Vapor Outdoor Temperature Sensor Outdoor...
  • Page 16 REFRIGERANT FLOW DIAGRAMS THREE-PHASE Heating Operation Figure 7: ARUN072BSS5 and ARUN096BSS5 Heating Refrigerant Diagram. Heating Operation Indoor HEX Indoor HEX Indoor Unit Indoor Unit High Temp. High Pressure Vapor High Temp. High Pressure Liquid Low Temp. Low Pressure Gas Outdoor Temperature Sensor Outdoor...
  • Page 17 REFRIGERANT FLOW DIAGRAMS THREE-PHASE Oil Return and Defrost Operation Figure 8: ARUN072BSS5 and ARUN096BSS5 Oil Return and Defrost Refrigerant Diagram. Oil Return / Defrost Operation Indoor HEX Indoor HEX Indoor Unit Indoor Unit High Temp. High Pressure Vapor High Temp. High Pressure Liquid Low Temp.

  • Page 18: Acoustic Data

    ACOUSTIC DATA THREE-PHASE Sound Pressure Levels Sound Pressure Levels Figure 9: ARUN072BSS5 and ARUN096BSS5 Acoustic Measurement Location. • discharge. • Measurements taken with no attenuation and units operating at full load normal operating condition. • Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed.
  • Page 19 ACOUSTIC DATA THREE-PHASE Sound Power Levels Sound Power Levels Table 4: ARUN072BSS5 and ARUN096BSS5 Sound Power Levels. Model No. dB(A) • Data is valid under diffuse field conditions. ARUN072BSS5 • Data is valid under nominal operating conditions. ARUN096BSS5 • Sound power level is measured using rated conditions, and tested in a reverberation room per ISO 3741 standards.

  • Page 20: Accessories

    ACCESSORIES THREE-PHASE Indoor Unit Y-Branches Indoor Unit Y-Branches (Unit: Inch [mm]) M odels Pipe Vapor Pipe Liquid Pipe I.D. 1/2 (12.7) I.D. 3/8 (9.52) I.D. 1/4 (6.35) I.D. 1/2 (12.7) I.D. 1/4 (6.35) I.D. 3/8 (9.52) I.D. 5/8 (15.88) I.D. 5/8 (15.88) I.D.
  • Page 21 ACCESSORIES THREE-PHASE Headers Unit: Inch Models Vapor pipe Liquid pipe 14-3/16 14-3/16 4-3/4 4-3/4 I.D. 1/2 I.D. 1/4 I.D. 1/4 4 branch I.D. 1/2 I.D. 3/8 I.D. 5/8 5-15/16 5-15/16 I.D. 3/8 4-3/4 ARBL054 4-3/4 I.D. 5/8 I.D. 3/8 I.D. 5/8 I.D.
  • Page 22 Includes: • 20 Gauge Paint Grip Wind Baffle in Soft Dove Grey • Use two (2) ZLABGP04A kits with the 6-ton ARUN072BSS5 and 8-ton ARUN096BSS5. Contact an LG Sales Representative for more information. 22 | PRODUCT DATA ©...
  • Page 23 When connected through the indoor unit, 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. LGMV.

  • Page 24: Performance Data

    PERFORMANCE DATA Cooling Capacity Data on page 25 Heating Capacity Data on page 35 Maximum Heating Capacity Data on page 41...

  • Page 25: Cooling Capacity Data

    COOLING CAPACITY DATA THREE-PHASE ARUN072BSS5 72,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor Combination 68/57 73/61 79/64 80/67 85/70 88/73 91/76 air temp. (°F DB) -9.9 65.5 1.86 77.8 2.25 90.4 2.67 93.7 2.89 95.1 3.11 98.4 3.57...
  • Page 26 COOLING CAPACITY DATA THREE-PHASE ARUN072BSS5 72,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor Combination 68/57 73/61 79/64 80/67 85/70 88/73 91/76 air temp. (°F DB) -9.9 55.2 1.61 65.9 1.94 76.5 2.30 81.8 2.50 87.2 2.68 96.0 3.05...
  • Page 27 COOLING CAPACITY DATA THREE-PHASE ARUN072BSS5 72,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor 68/57 73/61 79/64 80/67 85/70 88/73 91/76 Combination air temp. (°F DB) -9.9 43.7 1.26 52.1 1.52 60.8 1.79 64.9 1.92 69.1 2.06 77.5 2.37...
  • Page 28 COOLING CAPACITY DATA THREE-PHASE ARUN072BSS5 72,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor 68/57 73/61 79/64 80/67 85/70 88/73 91/76 Combination air temp. (°F DB) -9.9 34.1 0.97 40.5 1.15 47.3 1.35 50.5 1.45 53.7 1.54 60.1 1.77...
  • Page 29 COOLING CAPACITY DATA THREE-PHASE ARUN072BSS5 72,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor Combination 68/57 73/61 79/64 80/67 85/70 88/73 91/76 air temp. (°F DB) -9.9 24.3 0.72 28.9 0.85 33.8 0.95 36.0 1.02 38.3 1.10 43.1 1.22...
  • Page 30 COOLING CAPACITY DATA THREE-PHASE ARUN096BSS5 96,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor 68/57 73/61 79/64 80/67 85/70 88/73 91/76 Combination air temp. (°F DB) -9.9 87.3 2.68 103.7 3.25 120.5 3.86 125.0 4.16 126.7 4.49 131.1 5.15...
  • Page 31 COOLING CAPACITY DATA THREE-PHASE ARUN096BSS5 96,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor 68/57 73/61 79/64 80/67 85/70 88/73 91/76 Combination air temp. (°F DB) -9.9 73.6 2.32 87.8 2.80 102.0 3.32 109.1 3.60 116.2 3.86 128.0 4.40...
  • Page 32 COOLING CAPACITY DATA THREE-PHASE ARUN096BSS5 96,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor 68/57 73/61 79/64 80/67 85/70 88/73 91/76 Combination air temp. (°F DB) -9.9 58.3 1.82 69.4 2.19 81.0 2.58 86.6 2.78 92.1 2.97 103.3 3.42...
  • Page 33 COOLING CAPACITY DATA THREE-PHASE ARUN096BSS5 96,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor Combination 68/57 73/61 79/64 80/67 85/70 88/73 91/76 air temp. (°F DB) -9.9 45.4 1.39 54.0 1.66 63.0 1.95 67.3 2.09 71.6 2.22 80.1 2.55...
  • Page 34 COOLING CAPACITY DATA THREE-PHASE ARUN096BSS5 96,000 Btu/h 208-230V Three-Phase Outdoor Units Indoor Air Temp. °F DB/°F WB Outdoor 68/57 73/61 79/64 80/67 85/70 88/73 91/76 Combination air temp. (°F DB) -9.9 32.4 1.04 38.6 1.22 45.0 1.37 48.0 1.47 51.0 1.59 57.4 1.76...

  • Page 35: Heating Capacity Data

    HEATING CAPACITY DATA THREE-PHASE ARUN072BSS5 72,000 Btu/h 208-230V Three-Phase Outdoor Units Outdoor air Indoor Air Temp. °F DB temp. Combination °F DB °F WB -12.6 -13.0 58.1 3.98 57.5 4.35 56.5 4.91 55.9 5.42 55.3 5.94 54.8 6.53 54.5 6.84 54.2 7.26 -7.0...
  • Page 36 HEATING CAPACITY DATA THREE-PHASE ARUN072BSS5 72,000 Btu/h 208-230V Three-Phase Outdoor Units Outdoor air Indoor Air Temp. °F DB Combination temp. °F DB °F WB -12.6 -13.0 55.1 5.02 54.9 5.40 54.5 5.96 54.4 6.48 54.4 6.99 53.9 7.76 53.6 8.18 53.3 8.74 -7.0...
  • Page 37 HEATING CAPACITY DATA THREE-PHASE ARUN072BSS5 72,000 Btu/h 208-230V Three-Phase Outdoor Units Outdoor air Indoor Air Temp. °F DB Combination temp. °F DB °F WB -12.6 -13.0 54.3 6.10 54.1 6.25 53.8 6.47 53.5 7.01 53.2 7.56 52.2 7.53 50.5 7.52 48.3 7.50 -7.0...
  • Page 38 HEATING CAPACITY DATA THREE-PHASE ARUN096BSS5 96,000 Btu/h 208-230V Three-Phase Outdoor Units Outdoor air Indoor Air Temp. °F DB Combination temp. °F DB °F WB -12.6 -13.0 77.5 6.13 76.6 6.71 75.4 7.56 74.5 8.36 73.7 9.15 73.1 10.06 72.7 10.54 72.2 11.18 -7.0...
  • Page 39 HEATING CAPACITY DATA THREE-PHASE ARUN096BSS5 96,000 Btu/h 208-230V Three-Phase Outdoor Units Outdoor air Indoor Air Temp. °F DB Combination temp. °F DB °F WB -12.6 -13.0 73.5 7.74 73.2 8.32 72.7 9.18 72.6 9.98 72.5 10.78 71.9 11.95 71.5 12.60 71.0 13.47 -7.0...
  • Page 40 HEATING CAPACITY DATA THREE-PHASE ARUN096BSS5 96,000 Btu/h 208-230V Three-Phase Outdoor Units Outdoor air Indoor Air Temp. °F DB Combination temp. °F DB °F WB -12.6 -13.0 72.4 9.40 72.1 9.63 71.7 9.96 71.3 10.81 71.0 11.65 69.6 11.60 67.4 11.59 64.4 11.56 -7.0...

  • Page 41: Maximum Heating Capacity Data

    MAXIMUM HEATING CAPACITY DATA THREE-PHASE ARUN072BSS5 and ARUN096BSS5 72,000 Btu/h and 96,000 Btu/h 208-230V 3-Phase Outdoor Units Table 5: ARUN072BSS5 Maximum Heating Capacity. Outdoor air Indoor Air Temp. °F DB temp. Combination °F DB °F WB -12.6 -13.0 63.7 9.07 63.2 9.26 62.3...

  • Page 42: Correction Factors

    CORRECTION FACTORS Defrost Correction Factor on page 43 Elevation Correction Factors on page 43...
  • Page 43 CORRECTION FACTORS THREE-PHASE The correction factors shown below are calculated in the LATS Multi V software program. Defrost Correction Factor for Heating Operation Capacity tables do not take into consideration capacity reduction Table 7: Outdoor Unit Frost Accumulation Factor (Heating) when frost has accumulated on the condenser coil, nor during Entering DB (ºF) 19.4 23.0 26.6 32.0 37.4 41.0 44.6...

  • Page 44: Electrical Connections

    ELECTRICAL CONNECTIONS Electrical Connections on page 45 Generation 4 Indoor Units on page 47...
  • Page 45 ELECTRICAL CONNECTIONS THREE-PHASE Refer to the Product Data section for dimensional drawings, wiring, and refrigerant piping diagrams for the exact locations of the piping and electrical connection locations. Figure 15: Multi V S Three-Phase Power Wiring / Communications Cable Connections Example. Outdoor Power Supply (3Ø, 60 Hz, 208-230V)
  • Page 46 • Power and communications cables must not be routed Communication Bus in the same conduit and must be routed in a manner that Connection—Connect LG Cen. B keeps them a minimum of two (2) inches apart. Central Controller and BMS •...
  • Page 47 Figure 19: Location and Setting of Multi V S Three-Phase Outdoor Unit DIP Switch 3. LG’s indoor units are designated Generation 4 (Gen 4). For Gen 4 indoor units to operate with Gen 4 indoor unit features, the air conditioning system must meet the following requirements: •...

  • Page 48: Piping Limitations And Placement Considerations

    PIPING LIMITATIONS AND PLACEMENT CONSIDERATIONS Piping Limitations on page 49 Selecting the Best Location for Outdoor Unit(s) on page 51 Installing Outdoor Units Indoors on page 55...

  • Page 49: Piping Limitations

    PIPING LIMITATIONS THREE-PHASE The following pages present Multi V S Three-Phase piping limitations and are for illustrative purposes only. Designers MUST use LATS when designing LG VRF systems. Figure 20: Typical Multi V S Three-Phase Heat Pump System Building Figure 21: Typical Multi V S Three-Phase Heat Pump System Building Layout Listing the Piping Limitations —...
  • Page 50 PIPING LIMITATIONS THREE-PHASE The following pages present Multi V S Three-Phase piping limitations and are for illustrative purposes only. Designers MUST use LATS when designing LG VRF systems. Example of Pipe Sizing Example: Seven (7) indoor units connected Multi V S Unit Multi V S Three-Phase Outdoor Unit.

  • Page 51: Selecting The Best Location For The Outdoor Unit(S)

    SELECTING THE BEST LOCATION FOR THE THREE-PHASE OUTDOOR UNIT(S) Selecting the Best Location for the Outdoor Unit(s) DANGER • Do not install the unit in an area where combustible gas will generate, flow, stagnate, or leak. These conditions can cause a fire, resulting in bodily injury or death.
  • Page 52 SELECTING THE BEST LOCATION FOR THE THREE-PHASE OUTDOOR UNIT(S) Planning for Snow and Ice, continued. Choose an area where run-off from defrost mode will not accumulate and freeze on sidewalks or driveways. Properly install and insulate any drain hoses to prevent the hose from freezing, cracking, leaking, and damaging the outdoor unit. The system will take longer to provide heat, or heating performance will be reduced in winter if the outdoor unit is installed: 1.

  • Page 53: Outdoor Unit Clearance Requirements

    OUTDOOR UNIT CLEARANCE THREE-PHASE REQUIREMENTS ARUN096BSS5 Outdoor Units Proper clearance for the outdoor unit coil is critical for proper unit operation. When installing the outdoor unit, consider service, inlet and outlet and minimum allowable space requirements. The figures below and on the next page illustrate clearance requirements for various installation scenarios.
  • Page 54 OUTDOOR UNIT CLEARANCE THREE-PHASE REQUIREMENTS Figure 28: Proper Outdoor Unit Placement and Clearances, continued. Side by Side—High Rear and Side Side by Side—High Rear and Front Walls • Installation clearances must comply with local building codes. Walls with Building Overhang with Building Overhang •...

  • Page 55: Installing Outdoor Units Indoors

    Installing Outdoor Units Indoors LG Multi V outdoor units are engineered to be mounted outdoors and include technology designed to minimize the negative effects of winter weather’s freezing rain, sleet, and snow. Some building projects, however, necessitate placing the HVAC outdoor units indoors: •...
  • Page 56 For more detailed information on how to design indoor spaces for LG Multi V outdoor units, see the white paper "Air-Source VRF Mechanical Room Design Considerations for Outdoor Unit Placement in Enclosures"...
  • Page 57 INSTALLING OUTDOOR UNITS INDOORS THREE-PHASE Figure 32: General Air Guide / Louver Diagram. 20° Intake Area Louver pitch Space Between Louvers: 4 inches Air Guide Duct Wind Speed: 4.9 ft./s Open Rate by Louver Radian Figure 33: Open Rate by Louver Radian Formula. ho = h * COS Total Area (A) = H * W Number of Open Spaces (N) = (Number of Louvers - 1)
  • Page 58 LATS software programs, and more, log in to www.lghvac.com. LG Electronics, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway Alpharetta, Georgia 30022 New Issue: EM_MultiV_S_3Phase_OutdoorUnits_08_21 www.lghvac.com...

This manual is also suitable for:

Multi v s arun096bss5

Table of Contents