Engineering Manual

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SINGLE-ZONE

HIGH EFFICIENCY

WALL MOUNT

ENGINEERING MANUAL

Models:

LS090HSV5

LS120HSV5

LS180HSV5

Single-Zone High Efficiency Systems

3/4 to 1-1/2 Tons

Summary of content (56 pages)

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SINGLE-ZONE HIGH EFFICIENCY WALL MOUNT ENGINEERING MANUAL Single-Zone High Efficiency Systems 3/4 to 1-1/2 Tons Models: LS090HSV5 LS120HSV5 LS180HSV5
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PROPRIETARY DATA NOTICE This document, as well 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, best practices, building ventilation, owner’s, and service manuals, visit www.lghvac.com.
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TABLE OF CONTENTS Unit Nomenclature...........................................................................................................................................................................................................4 LG Air Conditioner Technical Solution (LATS)..........................................................................................................................................................5-6 High Efficiency Standard Product Data................................
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UNIT NOMENCLATURE Indoor Units and Outdoor Units Single Zone High Efficiency Standard Wall Mount Engineering Manual L S N 180 H L = LG Frame Type: A: Art Cool™ S: Standard C: Four-Way Ceiling-Cassette D: Ceiling-Concealed Duct (Low Static) H: Ceiling-Concealed Duct (High Static) V: Vertical-Horizontal Air Handling N: Indoor Unit U: Outdoor Unit No N or U: System Nominal Capacity (Nominal cooling capacity in Btu/h): 9 = 9,000 36 = 36,000 12 = 12,000 42 = 42,000 18 = 18,000 48 = 48,000 24 = 24,000 S
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LG AIR CONDITIONER TECHNICAL SOLUTION (LATS) LG Air Conditioner Technical Solution (LATS) Software A properly designed and installed refrigerant piping system is critical to the optimal performance of LG air-conditioning systems. To assist engineers, LG offers, free of charge, LG Air Conditioner Technical Solution (LATS) software—a total design solution for LG air conditioning systems. Contact your LG Rep for the best software program for your application.
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LG AIR CONDITIONER TECHNICAL SOLUTION (LATS) Single Zone High Efficiency Standard Wall Mount Engineering Manual LATS Generates a Complete Project Report LATS software also generates a report containing project design parameters, cooling and heating design data, system component performance, and capacity data.
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PRODUCT DATA “Mechanical Specifications” on page 8 “General Data” on page 9 “Electrical Data” on page 11 “Functions, Controls, and Options”on page 12 “Dimensions” on page 13 “Acoustic Data” on page 18 “Refrigerant Flow Diagrams” on page 22 “Wiring Diagrams” on page 24 “Electrical Connections” on page 27 “Air Flow, External Pressure, and Temperature Distribution” on page 31 “Accessories” on page 35
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MECHANICAL SPECIFICATIONS Single Zone High Efficiency Standard Wall Mount Engineering Manual General Figure 3: Single Zone High Efficiency Wall Mount Indoor Unit. LG Single Zone High Efficiency Wall Mount systems are comprised of a single outdoor unit connected to a single indoor unit with a single refrigerant circuit. These single zone systems can operate in either cooling or heating mode.
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GENERAL DATA Pairing Table Table 1: Single Zone High Efficiency Standard Wall Mount Unit Pairing Table. Outdoor Unit Model LSU090HSV5, LSU120HSV5 Indoor Unit Model LSN090HSV5, LSN120HSV5 Wireless Remote Controller AKB74955602 LSU180HSV5 LSN180HSV5 AKB74955602 Product Data 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.
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Single Zone High Efficiency Standard Wall Mount Engineering Manual GENERAL DATA Table 2: Single Zone High Efficiency Standard Wall Mount Unit General Data. LS090HSV5 LS120HSV5 LS180HSV5 System Model Number (IDU/ODU) (LSN090HSV5/LSU090HSV5) (LSN120HSV5/LSU120HSV5) (LSN180HSV5/LSU180HSV5) 1,023 ~ 9,000 ~ 12,625 1,023 ~ 12,000 ~ 13,785 3,070 ~ 18,000 ~ 29,515 Cooling Capacity (Min/Rated/Max) (Btu/h) 0.20 ~ 0.62 ~ 0.87 0.20 ~ 0.96 ~ 1.35 0.30 ~ 1.43 ~ 2.
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ELECTRICAL DATA Electrical Data Table 3: Single Zone High Efficiency Standard Wall Mount System Electrical Data. Nominal Unit Model No. Hertz Tons 3/4 1 1-1/2 LS090HSV5 LS120HSV5 LS180HSV5 60 Voltage tolerance is ±10%. Maximum allowable voltage unbalance is 2%. MCA = Minimum Circuit Ampacity. Voltage 208 - 230 Compressor Motor Voltage RLA Range MCA MOP Compressor Quantity (Min. to Max.) Cooling Heating 187 - 253 10.0 10.0 13.0 15.0 15.0 20.0 1 1 1 7.0 7.0 9.
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Table 4: Indoor Units—Functions, Controls and Options.
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OUTDOOR UNIT DIMENSIONS LSU090HSV5, LSU120HSV5 Unit : Inch (mm) 4-3/16 (106) 31/32 (24) 10-1/2(267) Sump Heater 22 (558) 30-5/16 (770) Drain Hole 8-Ø13/16 (20) 10-29/32 (277) Air Outlet Ø17-11/32 (440) 12-31/32 (330) 13-29/32 (353) 15/32 (11.
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OUTDOOR UNIT DIMENSIONS 15-3/32 (383) Unit : Inch (mm) 6-15/32 (164) 29/32 (22.5) Single Zone High Efficiency Standard Wall Mount Engineering Manual LSU180HSV5 13-3/32 (333) 21-1/2 (571) 1-25/32 (45) 25° 14° PRODUCT DATA 2-3/4 (69.
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OUTDOOR UNIT CORNER WEIGHT AND CENTER OF GRAVITY DIMENSIONS Figure 4: LSU090-120-180HSV5 Outdoor Unit Corner Weight and Center of Gravity Dimensions. d A D e c C B b Product Data a Table 5: LSU090-120-180HSV5 Outdoor Unit Corner Weight and Center of Gravity Dimensions. Model No. Weight (lb.) Center of Gravity (in.) Leg (in.) Corner Weight (lb.) Shipping Net a b c d e A B C D LSU090HSV5, LSU120HSV5 78.9 74.1 19-31/32 9-11/32 5-21/32 22 12-31/32 9.5 11.0 26.8 26.
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30-3/16 (767) Air Intake Hole Display & Remote Controller Signal Receiver Bottom Rear Right 2 (51) 7-7/16 (189) Air Intake Air Outlet Refrigerant, Drain Pipe and Cable Routing Knock Out Hole 5/16 (8) Terminal Block for Power Supply and Communication Approx. 11-11/32 (288) to gas pipe 12-1/8 (308) Refrigerant, Drain Approx.
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INDOOR UNIT DIMENSIONS LSN180HSV5 1-7/16 (33.5) Rear Right Bottom Air Outlet 8-9/32 (210) Air Intake Refrigerant, Drain Pipe and Cable Routing Knock Out Hole Approx. 9-7/16 (240) to gas pipe Approx.
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ACOUSTIC DATA Indoor Units Figure 5: High Efficiency Standard Wall Mount Indoor Unit Sound Level Measurement. Unit : ft. (m) 3.3 (1) 2.6 (0.8) • Measurements are taken 3.3 ft away from the front of the unit. • Sound pressure levels are measured in dB(A) with a tolerance of ±3. • Data is valid at nominal operation conditions. Operating conditions are assumed to be standard.
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● Low NC-65 60 NC-60 NC-55 50 NC-50 NC-45 40 NC-40 NC-35 30 ● Low 70 NC-30 Octave Band Sound Pressure Level (dB re 20μPa ) Octave Band Sound Pressure Level (dB re 20μPa ) 70 NC-65 60 ACOUSTIC DATA NC-60 NC-55 50 NC-50 NC-45 40 NC-35 30 NC-30 LSN120HSV5 and LSN180HSV5 Sound Pressure Levels NC-25 20 Approximate Hearing Threshold Approximate Hearing Threshold 10 63 125 250 500 1000 2000 4000 8000 Figure 7: Sound Pressure Level Diagrams for LSN120-180HSV5 Indoor Units.
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ACOUSTIC DATA Outdoor Units Outdoor Unit Sound Pressure Measurement • Measurements are taken 3.3 ft away from the front of the unit. • Sound pressure levels are measured in dB(A) with a tolerance of ±3. • Data is valid at nominal operation conditions. Operating conditions are assumed to be standard. • Reference acoustic pressure 0dB=20μPa • Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745, and may be different according to the test condition or equipment.
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NC-60 NC-55 50 NC-50 NC-45 40 NC-40 NC-35 30 NC-30 Octave Band Sound Pressure Level (dB re 20μ Octave Band Sound Pressure Level (dB re 20μ NC-65 60 NC-25 20 Approximate Hearing Threshold NC-65 60 NC-60 NC-55 ACOUSTIC DATA 50 NC-50 NC-45 40 NC-40 NC-30 NC-25 20 Approximate Hearing Threshold LSU120HSV5 and LSU180HSV5 Sound Pressure Levels NC-20 NC-15 10 10 125 250 500 1000 2000 4000 8000 Figure 10:63Sound Pressure Level (Hz) Diagrams for LSU120-180HSV5 Outdoor Units.
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REFRIGERANT FLOW DIAGRAMS Refrigerant Flow Diagram for LSN / LSU090, 120HSV5 Single Zone High Efficiency Standard Wall Mount Engineering Manual Indoor Unit Outdoor Unit Field Pipin g (Copper Tubing) Liquid Side Ø1/4 Inches Th2 EEV M Th1 Heat Exchanger (Evaporator) Th4 2-Way Valve Th6 Th3 3-Way Valve Th5 Reversing Valve Field Pipin g (Copper Tubing) Vapor Side Ø3/8 Inches Table 8: Single Zone High Efficiency Wall Mount LSN/LSU090-120HSV5 Thermistor Details.
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REFRIGERANT FLOW DIAGRAMS Refrigerant Flow Diagrams for LSN / LSU180HSV5 Indoor Unit Outdoor Unit Field Pipin g (Copper Tubing) Liquid Side Ø3/8 Inches Th2 EEV M Th1 Heat Exchanger (Evaporator) Th4 3-Way Valve Th6 Heat Exchanger (Condenser) M Th3 3-Way Valve Th5 Reversing Valve Field Pipin g (Copper Tubing) Product Data Vapor Side Ø5/8 Inches Th7 Th8 Accumulator Compressor : Cooling : Heating Table 9: Single Zone High Efficiency Wall Mount LSN/LSU180HSV5 Thermistor Details.
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INDOOR UNIT WIRING DIAGRAM LSN090HSV5, LSN120HSV5, LSN180HSV5 Single Zone High Efficiency Standard Wall Mount Engineering Manual Wiring Diagram for LSN090, 120, 180HSV5 24 | PRODUCT DATA 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.
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OUTDOOR UNIT WIRING DIAGRAM LSU090HSV5, LSU120HSV5 Wiring Diagram for LSU090, 120HSV5 Product Data 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.
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OUTDOOR UNIT WIRING DIAGRAM LSU180HSV5 Single Zone High Efficiency Standard Wall Mount Engineering Manual Wiring Diagram for LSU180HSV5 26 | PRODUCT DATA 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.
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ELECTRICAL CONNECTIONS General Power Wiring / Communications Cable Guidelines • • • • • • • • Follow manufacturer’s circuit diagrams displayed on the inside of the control box cover. Have a separate power supply for the indoor units. Provide a circuit breaker switch between the power source and the indoor unit. Confirm power source specifications. Properly ground the outdoor unit and the indoor unit per National Electrical Code (NEC) and local codes.
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ELECTRICAL CONNECTIONS Figure 11: LS090HSV5 and LS120HSV5 General Power / Communications System Schematic. Single Zone High Efficiency Standard Wall Mount Engineering Manual Power Supply Figure 12: LS180HSV5 General Power / Communications System Schematic. Power Supply Circuit Breaker Circuit Breaker Indoor Unit Ground Wiring Indoor Unit Ground Wiring Outdoor Unit Outdoor Unit • Use a conduit for the communications cable / power wiring from the outdoor unit to the indoor units.
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ELECTRICAL CONNECTIONS Controller Options Single Zone High Efficiency Standard Wall Mount systems include a wireless handheld remote controller (Model No. AKB74955602), but optional LG-suppled wired controllers are available. See “Functions, Controls, Options”, or contact an LG representative for more information. Figure 17: AKB74955602 Wireless Handheld Remote Controller. Buttons may differ depending on model type.
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ELECTRICAL CONNECTIONS Single Zone High Efficiency Standard Wall Mount Engineering Manual Wired Controller Placement Figure 18: Proper Location for the Wired Controller. Wired controllers include a sensor to detect room temperature. To maintain comfort levels in the conditioned space, the wired controller must be installed in a location away from direct sunlight, high humidity, and where it could be directly exposed to cold air.
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AIR FLOW, EXTERNAL PRESSURE, AND TEMPERATURE DISTRIBUTION Table 10: High Efficiency Standard Wall Mount Outdoor Unit Air Flow Rate and Static Pressure. Model No. Air Flow Rate (CFM) Static Pressure (in. WG) LSU090HSV5, LSU120HSV5 1,165 0.0329 LSU180HSV5 2,119 0.0384 LSN090HSV5 and LSN120HSV5 Cooling Air Velocity m/s (ft./s) Temperature °C (°F) 2(6.6) 0.3(1) 1(3.3) 0.5(1.6) m 10 8 6 4 2 0 ft. 32.8 26.2 19.7 13.1 6.6 0 m 2 ft. 6.6 1 3.
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AIR FLOW AND TEMPERATURE DISTRIBUTION LSN090HSV5 and LSN120HSV5, continued. Single Zone High Efficiency Standard Wall Mount Engineering Manual Heating Air Velocity m/s (ft./s) 0.3(1) 0.5(1.6) Temperature °C (°F) 1(3.3) 1.5(4.9) 2(6.6) m 10 8 6 4 2 0 ft. 32.8 26.2 19.7 13.1 6.6 0 m 2 ft. 6.6 1 3.3 0 0 32(90) 24(75) 26(79) 28(82) 30(86) m 10 8 6 4 2 0 ft. 32.8 26.2 19.7 13.1 6.6 0 m 2 ft. 6.6 1 3.
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AIR FLOW AND TEMPERATURE DISTRIBUTION LSN180HSV5 Cooling Air Velocity m/s (ft./s) Temperature °C (°F) 2(6.6) 0.3(1) 0.5(1.6) 1.5(4.9) 1(3.3) m 10 8 6 4 2 0 ft. 32.8 26.2 19.7 13.1 6.6 0 m 2 ft. 6.6 1 3.3 0 0 28(82) 22(72) 24(75) 26(79) 18(64) 2 m ft. 6.6 1 3.3 0 0 m 10 8 6 4 2 0 ft. 32.8 26.2 19.7 13.1 6.6 0 Side View Discharge Angle : 25˚ (From the floor Vertical Louver : Center Fan Speed : Power ) Air Velocity m/s (ft./s) m ft. 5 16.4 0.3(1) m ft.
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AIR FLOW AND TEMPERATURE DISTRIBUTION LSN180HSV5, continued. Single Zone High Efficiency Standard Wall Mount Engineering Manual Heating Air Velocity m/s (ft./s) 0.3(1) 0.5(1.6) Temperature °C (°F) 1(3.3) 2(6.6) 1.5(4.9) m 10 8 6 4 2 0 ft. 32.8 26.2 19.7 13.1 6.6 0 m 2 ft. 6.6 1 3.3 0 0 m 24(75) ft. 6.6 32(90) 2 30(86) 28(82) 26(79) m 10 8 6 4 2 0 ft. 32.8 26.2 19.7 13.1 6.6 0 1 3.
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ACCESSORIES LG Monitoring View (LGMV) Diagnostic Software and Cable Additional screens can be accessed by tabs on the main screen: 1.
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ACCESSORIES Single Zone High Efficiency Standard Wall Mount Engineering Manual LG Smart Inverter Monitoring System (SIMS) SIMS can be used to display and graph operational data for single zone systems and respective components (indoor unit and outdoor unit). SIMS also displays error codes and a troubleshooting guide. SIMs consists of a hardware Wireless Local Area Network (WLAN) module, an interface cable, and a free downloadable application (app) for iOS® or Android™.
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PERFORMANCE DATA “Cooling Capacity Data” on page 38 “Heating Capacity Data” on page 40 “Maximum Heating Capacity Data” on page 42 “Equipment Selection Procedure” on page 44
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PERFORMANCE DATA Cooling Capacity LS090HSV5, LS120HSV5 Cooling Capacity Table for LS090HSV5 (LSU090HSV5 + LSN090HSV5) Single Zone High Efficiency Standard Wall Mount Engineering Manual Table 11: LSN090HSV5 / LSU090HSV5 Cooling Capacities. Outdoor Air 64 / 53 Temp. TC SHC (°F DB) 0 5 7 10 14 23 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 5.45 5.34 5.38 5.44 5.51 5.92 6.01 6.24 6.47 6.70 6.94 7.17 7.40 7.63 7.56 7.49 7.43 7.36 7.29 7.22 7.15 6.96 6.77 6.59 6.35 6.21 6.02 4.52 4.
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PERFORMANCE DATA Cooling Capacity LS180HSV5 Cooling Capacity Table for LS180HSV5 (LSU180HSV5 + LSN180HSV5) Table 13: LSN180HSV5 / LSU180HSV5 Cooling Capacities. Outdoor Air 64 / 53 Temp. TC SHC (°F DB) 10.90 10.69 10.76 10.87 11.02 11.83 12.02 12.48 12.95 13.41 13.87 14.34 14.80 15.27 15.13 14.99 14.85 14.71 14.57 14.43 14.29 13.92 13.55 13.17 12.70 12.42 12.05 8.68 8.56 8.64 8.76 8.91 9.57 9.72 10.10 10.47 10.85 11.23 11.60 11.98 12.35 12.24 12.13 12.02 11.91 11.79 11.68 11.57 11.27 10.96 10.66 10.28 10.
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PERFORMANCE DATA Heating Capacity LS090HSV5, LS120HSV5 Heating Capacity Table for LS090HSV5 (LSU090HSV5 + LSN090HSV5) Table 14: LSN090HSV5 / LSU090HSV5 Heating Capacities. Single Zone High Efficiency Standard Wall Mount Engineering Manual Outdoor Air Temp. °F DB °F WB -3 0 1 6 10 16 17 19 24 32 41 43 47 53 59 64 70 75 -4 -1 0 5 9 14 15 17 23 30 38 40 43 50 53 57 61 65 Indoor Air Temperature (°F DB) TC 60 5.56 6.05 6.13 6.40 6.69 6.90 6.94 7.04 7.72 9.25 10.62 10.96 11.47 11.58 11.85 12.10 12.33 12.
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PERFORMANCE DATA Heating Capacity LS180HSV5 Heating Capacity Table for LS180HSV5 (LSU180HSV5 + LSN180HSV5) Table 16: LSN180HSV5 / LSU180HSV5 Heating Capacities. Outdoor Air Temp. °F DB °F WB -4 -1 0 5 9 14 15 17 23 30 38 40 43 50 53 57 61 65 TC 11.02 11.99 12.15 12.69 13.25 13.67 13.76 13.95 15.30 18.34 21.04 21.72 22.73 22.96 23.48 23.98 24.43 24.77 PI 1.15 1.27 1.28 1.32 1.37 1.38 1.40 1.42 1.48 1.59 1.70 1.73 1.76 1.78 1.80 1.84 1.86 1.89 TC 10.68 11.63 11.78 12.31 12.85 13.25 13.34 13.52 14.
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PERFORMANCE DATA Maximum Heating Capacity LS090HSV5, LS120HSV5 Maximum Heating Capacity Table for LS090HSV5 (LSU090HSV5 + LSN090HSV5) Single Zone High Efficiency Standard Wall Mount Engineering Manual Table 17: LSN090HSV5 / LSU090HSV5 Maximum Heating Capacities. Outdoor Air Temp. °F DB °F WB -3 0 1 6 10 16 17 19 24 32 41 43 47 53 59 64 70 75 -4 -1 0 5 9 14 15 17 23 30 38 40 43 50 53 57 61 65 Indoor Air Temperature (°F DB) TC 60 8.43 8.90 9.10 10.10 10.63 11.12 11.25 11.39 12.48 14.23 16.20 16.64 17.
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PERFORMANCE DATA Maximum Heating Capacity LS180HSV5 Maximum Heating Capacity Table for LS180HSV5 (LSU180HSV5 + LSN180HSV5) Table 19: LSN180HSV5 / LSU180HSV5 Maximum Heating Capacities. Outdoor Air Temp. °F DB °F WB -4 -1 0 5 9 14 15 17 23 30 38 40 43 50 53 57 61 65 TC 16.99 17.95 18.35 20.37 21.44 22.43 22.68 22.96 25.99 30.84 36.30 37.52 39.96 41.00 41.52 41.85 41.99 41.89 60 PI 2.30 2.32 2.33 2.40 2.43 2.45 2.44 2.47 2.72 3.08 3.36 3.45 3.68 3.75 3.67 3.59 3.43 3.13 TC 16.89 17.81 18.19 20.16 21.
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EQUIPMENT SELECTION PROCEDURE Correction Factors Single Zone High Efficiency Standard Wall Mount Engineering Manual Cooling / Heating Correction Factors For Single Zone High Efficiency Standard Wall Mounted systems, calculate the equivalent length of the liquid line from the outdoor unit to 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 below.
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EQUIPMENT SELECTION PROCEDURE Correction Factors Defrost Correction Factor for Heating Operation The outdoor unit heating capacity may need to be adjusted for frost accumulation on air-cooled systems. If design day conditions are below the dewpoint of the surrounding air, frost may not be a problem and no correction factor is needed. In certain weather conditions, however, frost may form and accumulate on the air-cooled outdoor unit coil and impact the coils ability to transfer heat.
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APPLICATION GUIDELINES “Placement Considerations” on page 47 “Installing Outdoor Units Indoors” on page 52 “Design Guideline Summary” on page 55
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PLACEMENT CONSIDERATIONS Indoor Unit Selecting the Best Location for the Indoor Unit Follow recommended best practices when choosing an indoor location for the single zone indoor unit. Figure 22: Single Zone High Efficiency Standard Wall Mount Indoor Unit Clearance Requirements. More than 4 inches Dos Dont’s More than 4 inches At least 6.5 feet from the floor Table 24: Single Zone High Efficiency Standard Wall Mount Indoor Unit Ceiling Clearances.
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PLACEMENT CONSIDERATIONS Outdoor Unit Selecting the Best Location for the Outdoor Unit Single Zone High Efficiency Standard Wall Mount Engineering Manual • DANGER Do not install the unit in an area where combustible gas may generate, flow, stagnate, or leak. These conditions can cause a fire, resulting in bodily injury or death. • Do not install the unit in a location where acidic solution and spray (sulfur) are often used as it can cause bodily injury or death.
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PLACEMENT CONSIDERATIONS Outdoor Unit Planning for Snow and Ice, continued. When deciding on a location to place the outdoor unit, be sure to choose an area where run-off from defrost will not accumulate and freeze on sidewalks or driveways, which may create unsafe conditions. Properly install and insulate any drain hoses to prevent the hose from freezing, cracking, leaking, and causing unsafe conditions from frozen condensate.
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PLACEMENT CONSIDERATIONS Outdoor Unit Oceanside Applications Single Zone High Efficiency Standard Wall Mount Engineering Manual Use of a Windbreak to Shield from Sea Wind Figure 26: Oceanside Placement Using Windbreak. Windbreak Ocean winds may cause corrosion, particularly on the condenser and evaporator fins, which, in turn could cause product malfunction or inefficient performance. • • • • • • Avoid installing the outdoor unit where it would be directly exposed to ocean winds.
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PLACEMENT CONSIDERATIONS Outdoor Unit Minimum Allowable Clearance and Service Access Requirements Proper clearance for the outdoor unit coil is critical for proper operation. When installing the outdoor unit, consider service, inlet and outlet, and minimum allowable space requirements as illustrated in the diagrams below. • Include enough space for airflow and for service access.
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PLACEMENT CONSIDERATIONS Installing Outdoor Units Indoors Single Zone High Efficiency Standard Wall Mount Engineering Manual Installing Outdoor Units Indoors Single Zone High Efficiency Standard Wall Mount 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: • Lack of ground space.
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PLACEMENT CONSIDERATIONS Installing Outdoor Units Indoors Provide a means to drain the condensate generated during heating mode and defrost cycle in addition to rainwater that infiltrates the inlet louver enclosed area. • Install a field-provided drain pan under the outdoor units and provide a path to a nearby floor drain.
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PLACEMENT CONSIDERATIONS Installing Outdoor Units Indoors Open Rate by Louver Radian W h ho H ≤ 15 ho = h * COS Total Area (A) = H * W Number of Open Spaces (N) = (Number of Louvers - 1) Effective Area (Af) = ho * W * N Louver Open Rate (n) = Af / A Af = A * n Side View Effective Cross Section Area Front View Confirming Air Flow Rate / Total Opening Rate Figure 32: Example of Installing Outdoor Unit Indoors. • Example: LSU180HSV5. Louver Dimensions • Discharge Airflow Rate: 2,119 ft.3/min.
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REFRIGERANT PIPING DESIGN Design Guideline Summary Device Connection Limitations Figure 33: Single Zone High Efficiency Wall Mount System Layout. 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.
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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. LG Electronics, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway Alpharetta, Georgia 30022 www.lghvac.