Engineering Manual

ManualsBrandsLG ManualsCooling18k Cooling + Heating - Wall Mounted - Air Conditioning System - 22 SEER2

SINGLE ZONE

HIGH EFFICIENCY

WALL MOUNTED

ENGINEERING MANUAL

Models:

LS090HSV5

LS120HSV5

LS181HSV5

Single Zone High Efficiency Systems

3/4 to 1-1/2 Tons

Summary of content (60 pages)

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SINGLE ZONE HIGH EFFICIENCY WALL MOUNTED ENGINEERING MANUAL Single Zone High Efficiency Systems 3/4 to 1-1/2 Tons Models: LS090HSV5 LS120HSV5 LS181HSV5
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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 3 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 120 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 Capacity (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 System Type: H =
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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 Wall Mount Unit Pairing Table. Outdoor Unit Model LSU090HSV5, LSU120HSV5 Indoor Unit Model LSN090HSV5, LSN120HSV5 Wireless Remote Controller AKB74955602 LSU181HSV5 LSN181HSV5 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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GENERAL DATA Single Zone High Efficiency Standard Wall Mount Engineering Manual Table 2: Single Zone High Efficiency General Data. LS090HSV5 LS120HSV5 LS181HSV5 System Model Number (IDU/ODU) (LSN090HSV5/LSU090HSV5) (LSN120HSV5/LSU120HSV5) (LSN181HSV5/LSU181HSV5) 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 Wall Mount System Electrical Data. Nominal Unit Model No. Hertz Tons 3/4 1 1-1/2 LS090HSV5 LS120HSV5 LS181HSV5 60 Voltage 208 - 230 Voltage tolerance is ±10%. Maximum allowable voltage unbalance is 2%. MCA = Minimum Circuit Ampacity. Maximum Overcurrent Protection (MOP) is calculated as follows: (Largest motor FLA x 2.25) + (Sum of other motor Voltage ComRange MCA MOP pressor (Min. to Max.) Quantity 187 - 253 10.0 10.0 15.0 15.
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FUNCTIONS, CONTROLS, AND OPTIONS Table 4: Indoor Units—Functions, Controls and Options.
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OUTDOOR UNIT DIMENSIONS Dimensions for LSU090HSV5 and LSU120HSV5 Figure 4: LSU090HSV5, LSU120HSV5 Outdoor Unit Dimensions. 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 2-23/32 (69) Control Box 21-1/2 (545) 12-31/32 (330) 13-29/32 (353) 15/32 (11.
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OUTDOOR UNIT DIMENSIONS Dimensions for LSU181HSV5 Figure 5: LSU181HSV5 Outdoor Unit Dimensions. Single Zone High Efficiency Standard Wall Mount Engineering Manual Unit : inch (mm) 14 | 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 CORNER WEIGHT AND CENTER OF GRAVITY DIMENSIONS Figure 6: LSU090-120-181HSV5 Outdoor Unit Corner Weight and Center of Gravity Dimensions. d A D e c C B b Product Data a Table 5: LSU090-120-181HSV5 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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1-7/16 (33.5) 30-3/16 (767) Air Intake Hole 32-15/16 (837) [28-5/32 (715)] Air Outlet Hole Heating Display & Remote Controller Signal Receiver Bottom 2-3/8 (60) 3-5/8 (92) 55° Left & Right 55° Rear Right 2 (51) 7-7/16 (189) Air Intake Air Outlet Terminal Block for Power Supply and 12-1/8 (308) Refrigerant, Drain Pipe and Cable Routing Knock Out Hole 5/16 (8) Communication Approx. 11-11/32 (288) to gas pipe Refrigerant, Drain Approx.
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INDOOR UNIT DIMENSIONS Dimensions for LSN181HSV5 Figure 8: LSN181HSV5 Dimensions. 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 Indoor 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 ±1. • 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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ACOUSTIC DATA Indoor Units LSN120HSV5 and LSN181HSV5 Sound Pressure Levels Figure 11: Sound Pressure Level Diagrams for LSN120-181HSV5 Indoor Units.
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ACOUSTIC DATA Outdoor Units Outdoor Unit Sound Pressure Measurement Figure 12: High Efficiency Outdoor Unit Sound Level Measurement. Single Zone High Efficiency Standard Wall Mount Engineering Manual Unit : ft. (m) Center of Outdoor Unit 3.3 ft. (1) Outdoor Unit Sound Pressure Levels • 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 ±1. • Data is valid at nominal operation conditions.
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ACOUSTIC DATA Outdoor Units LSU181HSV5 Cooling and Heating Sound Pressure Diagrams Figure 15: LSU181HSV5 Cooling Sound Pressure Level Diagram. Figure 16: LSU181HSV5 Heating Sound Pressure Level Diagram. 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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REFRIGERANT FLOW DIAGRAMS Refrigerant Flow Diagram for LSN / LSU090-120HSV5 Single Zone High Efficiency Standard Wall Mount Engineering Manual Figure 17: Refrigerant Flow Diagram for LSN / LSU090-120HSV5 units.
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REFRIGERANT FLOW DIAGRAMS Refrigerant Flow Diagrams for LSN / LSU181HSV5 Figure 18: Refrigerant Flow Diagram for LSN / LSU181HSV5 units.
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INDOOR UNIT WIRING DIAGRAM Wiring Diagram for LSN090HSV5, LSN120HSV5, LSN181HSV5 Figure 19: Wiring Diagram for LSN090HSV5, LSN120HSV5, LSN181HSV5 units. USE COPPER CONDUCTORS ONLY Single Zone High Efficiency Standard Wall Mount Engineering Manual INFORMATION . You need to buy a dedicated circuit separately. Factory Wiring Field Wiring BL YL BL CN_L_R CN_U_D CN_DISP3 EEPROM MAIN PCB ASM CN_IN_N1 BR CN_TH3 FAN BK MOTOR WH CN1 FUSE 250V / T3.
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OUTDOOR UNIT WIRING DIAGRAM Wiring Diagram for LSU090HSV5, LSU120HSV5 Figure 20: Wiring Diagram for LSU090HSV5, LSU120HSV5 units. FUSE AC250V / 1A USE COPPER CONDUCTORS ONLY LGMV CN_EEV CN_SUMP_H CN_4WAY RY_4WAY CN_CENTRAL CN2 FUSE 250V T12A IPM BR AC_L BL AC_N RD COM Product Data FUSE 250V / T3.15A COMP C_PIPE_ AIR FUSE 250V / T3.15A IPM D_PIPE CN1 . You need to buy a dedicated circuit separately. Factory Wiring Field Wiring Optional or Factory installed MEZ67657703 Rev.
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OUTDOOR UNIT WIRING DIAGRAM Wiring Diagram for LSU181HSV5 PI485 CN_PWR REACTOR EEV OUTDOOR PIPE TH. COMP TH. TH. REVERSING LGMV JIG WIRE CN_TH1 CN_TH2 CN_LGMV CN_HEATER Single Zone High Efficiency Standard Wall Mount Engineering Manual Figure 21: Wiring Diagram for LSU181HSV5 units. 250V / T25A IPM 250V / T25A FAN IPM . You need to buy a dedicated circuit separately. Factory Wiring Field Wiring MEZ68728106 Rev.
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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. Confirm power source specifications. Properly ground the outdoor unit and the indoor unit per National Electrical Code (NEC) and local codes. Connect the wiring firmly so that the wires cannot be easily pulled out. Confirm that the electrical capacity is sufficient.
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ELECTRICAL CONNECTIONS Figure 22: LS090HSV5 and LS120HSV5 General Power / Communications System Schematic. Single Zone High Efficiency Standard Wall Mount Engineering Manual Power Supply Figure 23: LS181HSV5 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 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 28: AKB74955602 Wireless Handheld Remote Controller. Buttons may differ depending on model type. Wireless Handheld Remote Controller features: • Display Panel: Displays operation conditions.
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ELECTRICAL CONNECTIONS Single Zone High Efficiency Standard Wall Mount Engineering Manual Wired Controller Placement Figure 29: 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 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 LSU181HSV5 2,119 0.0409 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 LSN181HSV5 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 LSN181HSV5, 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 Maximum Cooling Capacity Data on page 41 Heating Capacity Data on page 44 Maximum Heating Capacity Data on page 46 Equipment Selection Procedure on page 48
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PERFORMANCE DATA Cooling Capacity Cooling Capacity Table for LS090HSV5 (LSU090HSV5 + LSN090HSV5) Single Zone High Efficiency Standard Wall Mount Engineering Manual Table 11: LSN090HSV5 / LSU090HSV5 Cooling Capacities. Outdoor Air Temp. (°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 TC 64 / 53 SHC PI TC 68 / 57 SHC PI 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 4.52 4.
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PERFORMANCE DATA Cooling Capacity Cooling Capacity Table for LS120HSV5 (LSU120HSV5 + LSN120HSV5) Table 12: LSN120HSV5 / LSU120HSV5 Cooling Capacities. Outdoor Air Temp. (°F DB) 64 / 53 SHC PI TC 68 / 57 SHC PI 7.27 7.13 7.18 7.25 7.35 7.89 8.01 8.32 8.63 8.94 9.25 9.56 9.87 10.18 10.09 9.99 9.90 9.81 9.71 9.62 9.53 9.28 9.03 8.78 8.47 8.28 6.03 5.94 6.00 6.08 6.19 6.65 6.75 7.01 7.27 7.53 7.80 8.06 8.32 8.58 8.50 8.42 8.35 8.27 8.19 8.11 8.04 7.82 7.61 7.40 7.14 6.98 0.38 0.39 0.40 0.40 0.41 0.
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PERFORMANCE DATA Cooling Capacity Cooling Capacity Table for LS181HSV5 (LSU181HSV5 + LSN181HSV5) Single Zone High Efficiency Standard Wall Mount Engineering Manual Table 13: LSN181HSV5 / LSU181HSV5 Cooling Capacities. Outdoor Air Temp. (°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 64 / 53 TC SHC 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 8.68 8.
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PERFORMANCE DATA Maximum Cooling Capacity Max. Cooling Capacity Table for LS090HSV5 (LSU090HSV5 + LSN090HSV5) Table 14: LSU090HSV5 / LSN090HSV5 Maximum Cooling Capacities. Outdoor Air Temp. °F DB 64 / 53 TC 7.64 7.50 7.55 7.63 7.73 8.30 8.43 8.75 9.08 9.41 9.73 10.06 10.38 10.71 10.61 10.51 10.42 10.32 10.22 10.12 10.03 9.76 9.50 9.24 8.91 8.71 SHC 5.54 5.46 5.51 5.59 5.69 6.11 6.21 6.45 6.69 6.92 7.16 7.40 7.64 7.88 7.81 7.74 7.67 7.60 7.53 7.46 7.39 7.19 7.00 6.80 6.56 6.41 68 / 57 PI 0.34 0.35 0.
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PERFORMANCE DATA Maximum Cooling Capacity Max. Cooling Capacity Table for LS120HSV5 (LSU120HSV5 + LSN120HSV5) Single Zone High Efficiency Standard Wall Mount Engineering Manual Table 15: LSU120HSV5 / LSN120HSV5 Maximum Cooling Capacities. Outdoor Air Temp.
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PERFORMANCE DATA Maximum Cooling Capacity Max. Cooling Capacity Table for LS181HSV5 (LSU181HSV5 + LSN181HSV5) Table 16: LSU181HSV5 / LSN181HSV5 Maximum Cooling Capacities. Outdoor Air Temp. °F DB 64 / 53 TC 17.87 17.53 17.65 17.83 18.07 19.40 19.70 20.47 21.23 21.99 22.75 23.51 24.27 25.03 24.81 24.58 24.35 24.12 23.89 23.67 23.44 22.82 22.21 21.60 20.83 20.37 SHC 14.29 14.09 14.22 14.41 14.67 15.76 16.00 16.62 17.24 17.86 18.48 19.09 19.71 20.33 20.15 19.96 19.78 19.60 19.41 19.23 19.04 18.54 18.
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PERFORMANCE DATA Heating Capacity Heating Capacity Table for LS090HSV5 (LSU090HSV5 + LSN090HSV5) Table 17: 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 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 12.50 60 PI 0.47 0.52 0.53 0.
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PERFORMANCE DATA Heating Capacity Heating Capacity Table for LS181HSV5 (LSU181HSV5 + LSN181HSV5) Table 19: LSN181HSV5 / LSU181HSV5 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 60 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 14.83 17.
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PERFORMANCE DATA Maximum Heating Capacity Max. Heating Capacity Table for LS090HSV5 (LSU090HSV5 + LSN090HSV5) Table 20: LSN090HSV5 / LSU090HSV5 Maximum 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 8.43 8.90 9.10 10.10 10.63 11.12 11.25 11.39 12.48 14.23 16.20 16.64 17.53 17.98 18.21 18.35 18.
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PERFORMANCE DATA Maximum Heating Capacity Max. Heating Capacity Table for LS181HSV5 (LSU181HSV5 + LSN181HSV5) Table 22: LSN181HSV5 / LSU181HSV5 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 21.20 22.17 22.
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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 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 51 Installing Outdoor Units Indoors on page 56 Design Guideline Summary on page 59
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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 31: Single Zone High Efficiency 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 Application Guidelines • Follow the table at right for minimum clearance of indoor unit from the top of the unit to the ceiling.
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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 35: 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 41: Example of Installing Outdoor Unit Indoors. • Example: LSU181HSV5. Louver Dimensions • Discharge Airflow Rate: 2,119 ft.3/min.
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REFRIGERANT PIPING DESIGN Design Guideline Summary Device Connection Limitations Figure 42: 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, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway Alpharetta, Georgia 30022 www.lghvac.