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Summary of Contents for LG LD187HHV4
- Page 1 SINGLE-ZONE CEILING-CONCEALED DUCTED LGRED° SYSTEM ENGINEERING MANUAL Single-Zone Ceiling-Concealed Ducted Heat Pump Systems 1-1/2 to 4 Tons High Static Low Static LH368HHV4 (36,000 Btu/h) LD187HHV4 (18,000 Btu/h) LH428HHV (42,000 Btu/h) High Static LH488HHV (48,000 Btu/h) LH248HHV4 (24,000 Btu/h)
- Page 2 This document is for design purposes only. For more technical materials such as submittals, catalogs, installation, owner’s, and service manuals, visit www.lghvac.com. For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice. © LG Electronics U.S.A., Inc.
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Page 3: Table Of Contents
TABLE OF CONTENTS Unit Nomenclature................4 ..............37 Wiring Connections ..............40 LG Air Conditioner Indoor Units .................. 43 Technical Solution (LATS) ............... 5 ..............44 ............... 8 Indoor Units .................. 44 Ceiling-Concealed Ducted System..........8 ..................45 General Data ................... 10 Ceiling Concealed Ducted Pairing Table ........ -
Page 4: Unit Nomenclature
UNIT NOMENCLATURE 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... -
Page 5: Lg Air Conditioner Technical Solution (Lats)
Contact your LG Rep for the best software program for your application. 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 CEILING-CONCEALED DUCTED UNIT PRODUCT DATA...
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Page 8: Ceiling-Concealed Ducted System
The indoor unit casing is designed to mount fully concealed above a finished ceiling. Casing is manufactured of galvanized steel plate. LG single zone ceiling-concealed ducted system comprises of a Cold surfaces of the unit are covered internally with a coated poly-... - Page 9 Options include a return filter box that holds a field-provided 24k Btu/h = 10 to 95 Hz Cooling; 10 to 130 Hz Heating high efficiency one or two inch MERV-rated filters, and a LG-supplied 36k Btu/h = 15 to 120 Hz Cooling; 15 to 135 Hz Heating air cleaner (each sold separately).
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Page 10: General Data
Indoor Unit Model Low Static LUU180HHV LDN187HV4 High Static LUU240HHV LHN248HV LUU360HHV LHN368HV LUU420HHV LHN428HV LUU480HHV LHN488HV The above units require any LG wired remote controller for operation. The LG wired remote controller is sold separately. 10 | DUCTED ©... -
Page 11: Low Static Ducted
Table 2: Ceiling-Concealed Ducted (Low Static) System General Data. Type Single Zone Ceiling-Concealed Ducted (Low Static) System (Model) (Indoor Unit / Outdoor Unit) LD187HHV4 (LDN187HV4 / LUU180HHV) Cooling Capacity (Min ~ Rated ~ Max) (Btu/h) 7,200 ~ 18,000 ~ 22,000 Cooling Power Input (kW) 0.51 ~ 1.44 ~ 2.00... -
Page 12: High Static Ducted
GENERAL DATA / SPECIFICATIONS High Static Ducted Table 3: Ceiling-Concealed Ducted (High Static) System General Data. Type Single Zone Ceiling-Concealed Ducted (High Static) LH248HHV4 LH368HHV4 LH428HHV LH488HHV System (Model) (Indoor Unit / Outdoor Unit) (LHN248HV/ (LHN368HV / (LHN428HV / (LHN488HV / LUU240HHV LUU360HHV) LUU420HHV) -
Page 13: Electrical Data
ELECTRICAL DATA Electrical Data Table 4: Electrical Data. Condenser Fan Motor(s) Voltage Compressor Locked Nominal Unit Model Compressor Hertz Voltage Range MCA MOP Motor RLA Rotor Condenser Condenser Fan Tons Quantity (Min. to Max.) (Cooling) Amps Fan Quantity. Motor FLA Low Static LUU180HHV 208 - 230... -
Page 14: Indoor Unit
FUNCTIONS, CONTROLS, AND OPTIONS Indoor Unit Functions, Controls, and Options for LDN187HV4 LHN248HV, LHN368HV, LHN428HV, LHN488HV Table 5: Indoor Unit—Functions, Controls, and Options. Ceiling Concealed Ducted Ceiling Concealed Ducted Indoor Unit Type (Low Static) (High Static) Air supply outlets Airflow steps (fan/cool/heat) 3 / 3 / 3 3 / 3 / 3 Washable anti-fungal filter... -
Page 15: Outdoor Unit
FUNCTIONS, CONTROLS, AND OPTIONS Outdoor Unit Functions, Controls, and Options for LUU180HHV, LUU240HHV, LUU360HHV, LUU420HHV, LUU480HHV Table 6: Outdoor Unit—Functions, Controls, and Options. Outdoor Unit Category Functions LUU180HHV LUU240HHV LUU360HHV LUU420HHV LUU480HHV Defrost / Deicing High pressure sensor Phase protection Restart delay (3-minutes) Self diagnosis Soft start... - Page 16 OUTDOOR UNIT DIMENSIONS Dimensions for LUU180HHV, LUU240HHV Figure 5: LUU180HHV, LUU240HHV Dimensions. 16 | DUCTED ©...
- Page 17 OUTDOOR UNIT DIMENSIONS Dimensions for LUU360HHV, LUU420HHV, LUU480HHV Figure 6: LUU360HHV, LUU420HHV, LUU480HHV Unit Dimensions. DUCTED | 17 ©...
- Page 18 INDOOR UNIT DIMENSIONS Dimensions for LDN187HV4 Figure 7: LDN187HV4 Indoor Unit Dimensions. 18 | DUCTED ©...
- Page 19 INDOOR UNIT DIMENSIONS Dimensions for LHN248HV Figure 8: LHN248HV Indoor Unit Dimensions. DUCTED | 19 ©...
- Page 20 INDOOR UNIT DIMENSIONS Dimensions for LHN368HV Figure 9: LHN368HV Indoor Unit Dimensions. 9-3/32 9-5/16 27-1/4 10-11/16 24-3/8 7-7/8 10-11/16 16-9/16 7-7/32 6-19/32 5-15/32 20 | DUCTED ©...
- Page 21 INDOOR UNIT DIMENSIONS Dimensions for LHN428HV, LHN488HV Figure 10: LHN428HV, LHN488HV Indoor Unit Dimensions. DUCTED | 21 ©...
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Page 22: Sound Pressure For Outdoor Units
ACOUSTIC DATA Sound Pressure for Outdoor Units Outdoor Unit Sound Pressure Level Measurement Figure 11: Ceiling-Concealed Ducted Outdoor Unit Sound Pressure Level Measurement Location. • 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 23 ACOUSTIC DATA Sound Pressure for Outdoor Units Outdoor Unit Sound Pressure Diagrams LUU180HHV, LUU240HHV LUU360HHV Cooling Heating NC-65 NC-60 NC-55 NC-50 NC-45 NC-40 NC-35 NC-30 NC-25 Approximate Hearing NC-20 Threshold NC-15 1000 2000 4000 8000 Octave Band Center Frequency (Hz) LUU420HHV, LUU480HHV Cooling Heating...
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Page 24: Sound Pressure For Indoor Units
ACOUSTIC DATA Sound Pressure for Indoor Units Indoor Unit Sound Pressure Measurement Figure 13: Indoor Unit Sound Pressure Level Measurement Location. • Measurements taken with no attenuation and units operating at full load normal operating condition. DISCHARGE SUCTION • Sound level will vary depending on a range of factors such as con- struction (acoustic absorption coefficient) of particular area in which DUCT DUCT... - Page 25 ACOUSTIC DATA Sound Pressure for Indoor Units Indoor Unit Sound Pressure Diagrams Figure 15: Ducted Indoor Unit Sound Pressure Level Diagrams. LHN248HV LHN368HV DUCTED | 25 ©...
- Page 26 ACOUSTIC DATA Sound Pressure for Indoor Units Indoor Unit Sound Pressure Diagrams Figure 16: Ducted Indoor Unit Sound Pressure Level Diagrams. LHN428HV LHN488HV 26 | DUCTED ©...
- Page 27 OUTDOOR UNIT REFRIGERANT FLOW DIAGRAM Refrigerant Flow Diagram for LUU180HHV, LUU240HHV, LUU360HHV Figure 17: LUU180HHV, LUU240HHV, LUU360HHV Refrigerant Flow Diagrams. CN-TH2 Outdoor Ambient Air Temperature CN-TH2 Refrigerant Flow Condenser Out Thermistor Temperature Thermistor Cooling Heating Condensing Temperature Thermistor Ø3/8 Flare Connection Strainer Strainer 36k model only...
- Page 28 OUTDOOR UNIT REFRIGERANT FLOW DIAGRAM Refrigerant Flow Diagram for LUU420HHV, LUU480HHV Figure 18: LUU420HHV, LUU480HHV Refrigerant Flow Diagrams. Table 10: LUU420HHV, LUU480HHV Ceiling-Concealed Ducted (HIgh Static) Outdoor Unit Thermistor Details. 28 | DUCTED ©...
- Page 29 INDOOR UNIT REFRIGERANT FLOW DIAGRAM Refrigerant Flow Diagram for LDN187HV4 Figure 19: LDN187HV4 Ceiling-Concealed Ducted Refrigerant Flow Diagram. : Cooling : Heating Evaporator Outlet Temperature Thermistor Evaporator Inlet Sirocco Fan Temperature Thermistor Indoor Unit Indoor Air Temperature Thermistor Table 11: LDN187HV4 Ceiling-Concealed Ducted (Low Static) Indoor Unit Table 14: LDN187HV4 Ceiling-Concealed Duct (Low Static) Thermistor Details.
- Page 30 INDOOR UNIT REFRIGERANT FLOW DIAGRAM Refrigerant Flow Diagram for LHN248HV Figure 20: LHN248HV Ceiling-Concealed Ducted (High Static) Indoor Unit Refrigerant Flow Diagram. Vapor Pipe Connection Port Heat Exchanger (Flare Connection) Heating Evaporator Outlet Cooling Sirocco Fan Temperature Indoor Air Temperature Thermistor Thermistor Evaporator Inlet...
- Page 31 INDOOR UNIT REFRIGERANT FLOW DIAGRAM Refrigerant Flow Diagram for LHN368HV, LHN428HV, LVN488HV Figure 21: LHN368HV, LHN428HV, LVN488HV Ceiling-Concealed Ducted (High Static) Indoor Unit Refrigerant Flow Diagram. Vapor Pipe Connection Port Heat Exchanger (Flare Connection) Heating Evaporator Outlet Cooling Sirocco Fan Temperature Thermistor Indoor Air Temperature...
- Page 32 OUTDOOR UNIT WIRING DIAGRAM Wiring Diagram for LUU180HHV, LUU240HHV Figure 22: LUU180HHV, LUU240HHV Outdoor Unit Wiring Diagram. 32 | DUCTED ©...
- Page 33 OUTDOOR UNIT WIRING DIAGRAM Wiring Diagram for LUU360HHV, LUU420HHV, LUU480HHV Figure 23: LUU360HHV, LUU420HHV, LUU480HHV Outdoor Unit Wiring Diagram. DUCTED | 33 ©...
- Page 34 INDOOR UNIT WIRING DIAGRAM Wiring Diagram for LDN187HV4 Figure 24: LDN187HV4 Ceiling-Concealed Ducted (Low Static) Indoor Unit Wiring Diagram. 34 | DUCTED ©...
- Page 35 INDOOR UNIT WIRING DIAGRAM Wiring Diagram for LHN248HV, LHN368HV Figure 25: LHN248HV, LHN368HV Ceiling-Concealed Ducted (High Static) Indoor Unit Wiring Diagram. 7.19 DUCTED | 35 ©...
- Page 36 INDOOR UNIT WIRING DIAGRAM Wiring Diagram for LHN428HV, LHN488HV Figure 26: LHN428HV, LHN488HV Ceiling-Concealed Ducted (High Static) Indoor Unit Wiring Diagram. 36 | DUCTED ©...
- Page 37 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. •...
- Page 38 ELECTRICAL CONNECTIONS Outdoor Unit Power Wiring / Communications Cable Connections 1. Remove the cover or control cover from the unit by loosening the fastening screws. 2. Take off the caps on the conduit panel. 3. Connect both the power supply and low voltage lines to the corresponding terminals on the terminal block. 4.
- Page 39 ELECTRICAL CONNECTIONS Ducted Indoor Unit Power Wiring / Communications Cable Connections 1. To access the terminal block, first detach the cover from the control box. Figure 30: Accessing the Indoor Unit Terminal Block. 2. Insert the power wiring / communications cable from the outdoor unit through the sides of the indoor unit and control box.
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Page 40: Wiring Connections
ELECTRICAL CONNECTIONS Wiring Connections Figure 32: Detailed Power / Communications System Schematic. Outdoor Unit Power Supply Main Switch Circuit Breaker Terminal Block Outdoor Terminal Block Outdoor 1(L1) 2(L2) 1(L1) 2(L2) 3 Fuse Power Wiring (Including Ground) Power Communication Wiring Cable 1(L1) 2(L2) Terminal Block Indoor Indoor Unit... - Page 41 Optional controllers can connect to the Single Zone Ducted indoor unit in one of two different ways. 1. LG Wired Remote Extension Cable with Molex plug (PZCWRC1; sold separately) that connects to the CN-REMO terminal on the indoor unit PCB.
- Page 42 ELECTRICAL CONNECTIONS Wired Controller Placement Figure 35: 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 control- ler 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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Page 43: Indoor Units
EXTERNAL STATIC PRESSURE Indoor Units Ceiling-Concealed Low Static Ducted External Static Pressure Settings Table 21: Ceiling-Concealed Ducted (Low Static) LDN187HV4 Indoor Unit External Static Pressure Setting Values Table. Static Pressure (in. wg) 0.04 0.08 0.12 0.16 0.20 Model No. / Nominal Capacity Airflow Rate / CFM Setting Value (in. -
Page 44: Indoor Units
EXTERNAL STATIC PRESSURE Indoor Units • To get the desired air flow and external static pressure combination, use the setting value from the table. Using a setting value other than that listed in the table will not provide the desired combination. •... - Page 45 ACCESSORIES Ceiling-Concealed Ducted Indoor Unit Accessories Table 26: Ceiling-Concealed Ducted Indoor Unit Accessories. Model No. Description ZLABGP04A Low Ambient Wind Baffle for Ducted Indoor Units ZFBXM101A High Efficiency Filter Box for High Static Ducted Indoor Unit LHN248HV ZFBXM201A High Efficiency Filter Box for High Static Ducted Indoor Unit LHN368HV ZFBXM301A High Efficiency Filter Box for High Static Ducted Indoor Unit LHN428HV, LHN488HV ZFBXD201A...
- Page 46 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. • CPU: Pentium ®...
- Page 47 SIMs consists of a hardware Wireless Local Area Network (WLAN) module, an interface cable, and a free downloadable application (app) for iOS® or Android™. The user must supply either an Apple® or an Android smart phone; SIMs is not optimized for tablets, and only be used with LG single zone and Multi F systems.
- Page 48 CEILING-CONCEALED DUCTED UNIT PERFORMANCE DATA...
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Page 49: Low Static Ducted Cooling Capacity Tables
PERFORMANCE DATA Low Static Ducted Cooling Capacity Tables Cooling Capacity Table for LD187HHV4 (LDN187HV4 + LUU180HHV) Table 28: LD187HHV4 Ceiling-Concealed Ducted (Low Static) System Cooling Capacity Table. Outdoor Indoor Air Temp. °F DB / °F WB 68 / 57 73 / 61... -
Page 50: High Static Ducted Cooling Capacity Tables
PERFORMANCE DATA High Static Ducted Cooling Capacity Tables Cooling Capacity Table for LH248HHV4 (LHN248HV + LUU240HHV) Table 29: LH248HHV4 Ceiling-Concealed Ducted (High Static) System Cooling Capacity Table. Outdoor Indoor Air Temp. °F DB / °F WB 68 / 57 73 / 61 77 / 64 80 / 67 86 / 72... - Page 51 PERFORMANCE DATA High Static Ducted Cooling Capacity Tables Cooling Capacity Table for LH368HHV4 (LHN368HV + LUU360HHV) Table 30: LH368HHV4 Ceiling-Concealed Ducted (High Static) System Cooling Capacity Table. Outdoor Indoor Air Temp. °F DB / °F WB 68 / 57 73 / 61 77 / 64 80 / 67 86 / 72...
- Page 52 PERFORMANCE DATA High Static Ducted Cooling Capacity Tables Cooling Capacity Table for LH428HHV (LHN428HV + LUU420HHV) Table 31: LH428HHV Ceiling-Concealed Ducted (High Static) System Cooling Capacity Table. Indoor Air Temp. °F DB / °F WB Outdoor 68 / 57 73 / 61 77 / 64 80 / 67 86 / 72...
- Page 53 PERFORMANCE DATA High Static Ducted Cooling Capacity Tables Cooling Capacity Table for LH488HHV (LHN488HV + LUU480HHV) Table 32: LH488HHV Ceiling-Concealed Ducted (High Static) System Cooling Capacity Table. Indoor Air Temp. °F DB / °F WB Outdoor 68 / 57 73 / 61 77 / 64 80 / 67 86 / 72...
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Page 54: Low Static Ducted Maximum Cooling Capacity Tables
PERFORMANCE DATA Low Static Ducted Maximum Cooling Capacity Tables Maximum Cooling Capacity Table for LD187HHV4 (LDN187HV4 + LUU180HHV) Table 33: LD187HHV4 Ceiling-Concealed Ducted (Low Static) System Maximum Cooling Capacity Table. Indoor Air Temp. °F DB / °F WB Outdoor 68 / 57... -
Page 55: High Static Ducted Maximum Cooling Capacity Tables
PERFORMANCE DATA High Static Ducted Maximum Cooling Capacity Tables Maximum Cooling Capacity Table for LH248HHV4 (LHN248HV + LUU240HHV) Table 34: LH248HHV4 Ceiling-Concealed Ducted (High Static) System Maximum Cooling Capacity Table. Outdoor Indoor Air Temp. °F DB / °F WB 68 / 57 73 / 61 77 / 64 80 / 67... - Page 56 PERFORMANCE DATA High Static Ducted Maximum Cooling Capacity Tables Maximum Cooling Capacity Table for LH368HHV4 (LHN368HV + LUU360HHV) Table 35: LH368HHV4 Ceiling-Concealed Ducted (High Static) System Maximum Cooling Capacity Table. Outdoor Indoor Air Temp. °F DB / °F WB 68 / 57 72 / 61 77 / 64 80 / 67...
- Page 57 PERFORMANCE DATA High Static Ducted Maximum Cooling Capacity Tables Maximum Cooling Capacity Table for LH428HHV (LHN428HV + LUU420HHV) Table 36: LH428HHV Ceiling-Concealed Ducted (High Static) System Maximum Cooling Capacity Table. Indoor Air Temp. °F DB / °F WB Outdoor 68 / 57 72 / 61 77 / 64 80 / 67...
- Page 58 PERFORMANCE DATA High Static Ducted Maximum Cooling Capacity Tables Maximum Cooling Capacity Table for LH488HHV (LHN488HV + LUU480HHV) Table 37: LH488HHV Ceiling-Concealed Ducted (High Static) System Maximum Cooling Capacity Table. Indoor Air Temp. °F DB / °F WB Outdoor 68 / 57 72 / 61 77 / 64 80 / 67...
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Page 59: Low Static Ducted Heating Capacity Tables
PERFORMANCE DATA Low Static Ducted Heating Capacity Tables Heating Capacity Table for LD187HHV4 (LDN187HV4 + LUU180HHV) Table 38: LD187HHV4 Ceiling-Concealed Ducted (Low Static) System Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 2.99... -
Page 60: High Static Ducted Heating Capacity Tables
PERFORMANCE DATA High Static Ducted Heating Capacity Tables Heating Capacity Table for LH248HHV4 (LHN248HV + LUU240HHV) Table 39: LH248HHV4 Ceiling-Concealed Ducted (High Static) System Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 9.50 1.61 8.48... - Page 61 PERFORMANCE DATA High Static Ducted Heating Capacity Tables Heating Capacity Table for LH368HHV4 (LHN368HV + LUU360HHV) Table 40: LH368HHV4 Ceiling-Concealed Ducted (HIgh Static) System Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 7.87 2.04 6.64...
- Page 62 PERFORMANCE DATA High Static Ducted Heating Capacity Tables Heating Capacity Table for LH428HHV (LHN428HV + LUU420HHV) Table 41: LH428HHV Ceiling-Concealed Ducted (High Static) System Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 4.39 1.20 3.13...
- Page 63 PERFORMANCE DATA High Static Ducted Heating Capacity Tables Heating Capacity Table for LH488HHV (LHN488HV + LUU480HHV) Table 42: LH488HHV Ceiling-Concealed Duct (High Static) System Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 10.94 1.77 9.35...
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Page 64: Low Static Ducted Maximum Heating Capacity Tables
PERFORMANCE DATA Low Static Ducted Maximum Heating Capacity Tables Maximum Heating Capacity Table for LD187HHV4 (LDN187HV4 + LUU180HHV) Table 43: LD187HHV4 Ceiling-Concealed Duct (High Static) System Max Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB... -
Page 65: High Static Ducted Maximum Heating Capacity Tables
PERFORMANCE DATA High Static Ducted Maximum Heating Capacity Tables Maximum Heating Capacity Table for LH248HHV4 (LHN248HV + LUU240HHV) Table 44: LH248HHV4 Ceiling-Concealed Duct (High Static) System Max Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 23.12... - Page 66 PERFORMANCE DATA High Static Ducted Maximum Heating Capacity Tables Maximum Heating Capacity Table for LH368HHV4 (LHN368HV + LUU360HHV) Table 45: LH368HHV4 Ceiling-Concealed Duct (High Static) System Max Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 32.11...
- Page 67 PERFORMANCE DATA High Static Ducted Maximum Heating Capacity Tables Maximum Heating Capacity Table for LH428HHV (LHN428HV + LUU420HHV) Table 46: LH428HHV Ceiling-Concealed Duct (High Static) System Max Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 36.94...
- Page 68 PERFORMANCE DATA High Static Ducted Maximum Heating Capacity Tables Maximum Heating Capacity Table for LH488HHV (LHN488HV + LUU480HHV) Table 47: LH488HHV Ceiling-Concealed Duct (High Static) System Max Heating Capacity Table. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 38.55...
- Page 69 CEILING-CONCEALED DUCTED UNIT APPLICATION GUIDELINES...
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Page 70: Equipment Selection Procedure
24.6 32.8 49.2 65.6 98.4 131.2 164.0 196.9 229.7 246.0 Cooling Capacity Coefficient Factor Rate of Capacity LD187HHV4 (18,000) 98.8 97.5 96.3 Change (%) Heating Capacity Coefficient Factor Rate of Capacity LD187HHV4 (18,000) 98.8 97.5 96.3 Change (%) Table 49: Piping Length (ft.) - Page 71 If further system design assistance is needed, or you have a unique ities (applies in 99% of applications – consider total load when application you would like to discuss, contact your LG sales rep. latent load is greater than 30%).
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Page 72: Indoor Unit
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. • Place the unit where air circulation will not be blocked. • Locate the indoor unit in a location that is level, and where it can be easily connected to the outdoor unit. •... - Page 73 PLACEMENT CONSIDERATIONS Indoor Unit Low Static Ducted IDU Service Space Required Dimensions Figure 41: Low Static Ducted Indoor Unit General Service Space Required Dimensions and Bolt Locations (Unit : Inch) Top view Control box 23-5/8 23-5/8 Access Opening 23-5/8 23-5/8 Side view (Unit : Inch) H = ≤25/32...
- Page 74 PLACEMENT CONSIDERATIONS Indoor Unit High Static Ducted IDU Service Space Required Dimensions Figure 43: High Static Ducted IDU Access Panel Required Dimensions. Table 53: High Static Ducted Indoor Unit Bolt Location Dimensions. Dimensions (in.) Model / Capacity (Btu/h) LHN248HV 27-1/8 35-1/2 LHN368HV 27-1/16...
- Page 75 PLACEMENT CONSIDERATIONS Indoor Unit Figure 44: Indoor Unit Drain Piping. Indoor Unit Drain System • Drain piping must have downward gradient of at least 1/50 to 1/100; to prevent reverse flow, slope Drain Pipe Support must not be straight up and down. •...
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Page 76: Outdoor Unit
PLACEMENT CONSIDERATIONS Outdoor Unit Selecting the Best Location for the Outdoor Unit 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. •... - Page 77 PLACEMENT CONSIDERATIONS Outdoor Unit Outdoor Unit Condensate Drain Piping Outdoor unit requires condensate drain piping. Condensate drain pipe is constructed with materials approved by local code. See Placement Considerations for information in reference to outdoor unit placement. Planning for Snow and Ice To ensure the outdoor unit operates properly, certain measures are required in locations where there is a possibility of heavy snowfall or severe windchill or cold: 1.
- Page 78 PLACEMENT CONSIDERATIONS Outdoor Unit Underground Refrigerant Piping Refrigerant pipe installed underground must be routed inside a vapor tight protective sleeve to prevent insulation deterioration and water infiltration. Refrigerant pipe installed inside underground Figure 46: Typical Arrangement of Refrigerant Pipe and Cable(s) in a casing must be continuous without any joints.
- Page 79 PLACEMENT CONSIDERATIONS Outdoor Unit Tie-Downs, Wind Restraints, and Lightning Protection Figure 47: Lightning Protection Diagram. • The strength of the roof must be checked before installing the Lightning rod Lightning rod outdoor units. Protection Angle (25˚~55˚) • If the installation site is prone to high winds or earthquakes, when installing on the wall or roof, securely anchor the mounting base 5 feet 1.5m...
- Page 80 PLACEMENT CONSIDERATIONS Outdoor Unit Oceanside Applications Figure 48: Prevailing Wind Figure 49: Leeward Side of the If the outdoor unit is placed on a roof, position it with the compressor Direction. Building. end (no coil surface) in the direction of the prevailing wind as shown in the figure at right.
- Page 81 OUTDOOR UNIT CENTER OF GRAVITY / CORNER WEIGHTS Figure 52: LUU180HHV and LUU240HHV Center of Gravity and Corner Weight Diagram. Table 61: LUU180HHV and LUU240HHV Center of Gravity and Corner Weights. Weight (lb.) Center of Gravity (in.) Leg (in.) Corner Weight (lb.) Model No.
- Page 82 PLACEMENT CONSIDERATIONS Outdoor Unit General Mounting Figure 54: Bracket Mounting. Securely attach the outdoor unit to a condenser pad, base rails, or other mounting platform that is securely anchored to the ground or building structure. The underlying structure or foundation must be designed to support the weight of the unit, and avoid placing the outdoor unit in a low lying area where water may accumulate.
- Page 83 PLACEMENT CONSIDERATIONS Outdoor Unit Figure 56: Bolting the LUU360HHV, LUU420HHV, LUU480HHV Outdoor Unit to the Platform. When installing the outdoor unit onto a concrete or rigid mount, use Unit: Inch a bolt and nut. 1. Ensure that the concrete platform will not degrade easily, and has enough strength to bear the weight of the unit.
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Page 84: Outdoor Unit
CLEARANCES Outdoor Unit Minimum Allowable Clearance and Service Access Requirements 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 as illustrated in the diagrams on the following pages. •... - Page 85 CLEARANCES Outdoor Unit When installing the outdoor unit, consider service, inlet, and outlet, and minimum allowable space requirements as illustrated in the following diagrams. Minimum 11-13/16 Strong Strong wind wind Minimum 11-13/16 Minimum 11-13/16 Strong Strong wind wind F e n F e n c e o c e o...
- Page 86 CLEARANCES Outdoor Unit Obstacles above and on the Where there are obstacles on both suction Obstacle just on the and discharge sides (discharge side obstacle air discharge side. air discharge side. is higher than the outdoor unit). Where there are obstacles on both suction Where there are obstacles above, and on both suction and discharge sides (discharge side obstacle and discharge sides (discharge side obstacle...
- Page 87 Installing Outdoor Units Indoors LG outdoor units are engineered to be mounted outdoors and include technology designed to minimize the negative effects of winter weath- er’s freezing rain, sleet, and snow. Some building projects, however, necessitate placing the HVAC outdoor units indoors: •...
- Page 88 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. •...
- Page 89 INSTALLING OUTDOOR UNITS INDOORS Open Rate by Louver Radian Figure 62: Open Rate by Louver Radian Formula. 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...
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Page 90: Design Guideline Summary
Measured in Actual Feet) 98 feet 98 feet unit Additional Refrigerant Needed (oz/ft) 0.43 0.43 System Layout Figure 64: Typical LD187HHV4, LH248HHV4 System Layout. Unit = Feet Max Length = A Max Elevation = B Outdoor unit Indoor unit Outdoor unit Indoor unit Figure 65: Typical LH368HHV4, LH428HHV, LH488HHV System Layout. - Page 91 20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway Alpharetta, Georgia 30022 EM_SZ_RED_Ducted_12_22 www.lghvac.com Supersedes: EM_SZ_RED_Ducted_09_20...