LG LC248HV Engineering Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. Heat Pump
  5. LC248HV
  6. Engineering manual

LG LC248HV Engineering Manual

Single-zone four-way ceiling-cassette system
Hide thumbs
Table of Contents

Advertisement

Quick Links

Single-Zone Four-Way
Ceiling-Cassette
Heat Pump Systems
3/4 to 3-1/2 Tons
LC098HV4 (9,000 Btu/h)
LC128HV4 (12,000 Btu/h)
CEILING-CASSETTE SYSTEM
LC188HV4 (18,000 Btu/h)
SINGLE-ZONE FOUR-WAY
ENGINEERING MANUAL
LC248HV (24,000 Btu/h)
LC368HV (36,000 Btu/h)
LC428HV (42,000 Btu/h)

Advertisement

Table of Contents
loading

Related Manuals for LG LC248HV

Summary of Contents for LG LC248HV

  • Page 1 SINGLE-ZONE FOUR-WAY CEILING-CASSETTE SYSTEM ENGINEERING MANUAL Single-Zone Four-Way Ceiling-Cassette Heat Pump Systems 3/4 to 3-1/2 Tons LC188HV4 (18,000 Btu/h) LC248HV (24,000 Btu/h) LC368HV (36,000 Btu/h) LC098HV4 (9,000 Btu/h) LC428HV (42,000 Btu/h) LC128HV4 (12,000 Btu/h)
  • Page 2 For more technical materials such as submittals, catalogs, installation, best practices, building ventilation, 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Nomenclature..........................................4 LG Air Conditioner Technical Solution (LATS) ................................. 5-6 Four-Way Ceiling-Cassette Product Data................................7-43 ......................................8-9 General Data ......................................... 10-12 Electrical Data ..........................................13 Functions, Controls, and Options ....................................14 Outdoor Unit Dimensions ...................................... 15-17 Indoor Unit Dimensions ......................................18-21 Acoustic Data ........................................

  • Page 4: Nomenclature

    UNIT NOMENCLATURE Indoor Units and Outdoor Units 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...

  • 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: Four-Way Ceiling-Cassette Product Data

    PRODUCT DATA Mechanical Specifications on page 8 General Data on page 10 Electrical Data on page 13 Functions, Controls, and Options on page 14 Dimensions on page 15 Acoustic Data on page 22 Refrigerant Flow Diagrams on page 26 Wiring Diagrams on page 30 Electrical Connections on page 36 Air Velocity and Temperature Distribution on page 39 Accessories on page 43...
  • Page 8 1,000 hours. System Case has a removable panel Models). LG single zone four-way ceiling cassette system comprises of a to allow access to major single frame outdoor unit connected to a single indoor unit with a internal components, and single refrigerant circuit.
  • Page 9 MECHANICAL SPECIFICATIONS Frequency ranges for the 9,000 ~ 24,000 Btu/h outdoor The indoor fan has Low, Med, High, Figure 4: Four-Way Ceiling Power Cool and Auto settings for Cassette System (LC368HV, units are: LC428HV Models). Cooling mode; and has Low, Med, 9k Btu/h = 20 Hz to 100 Hz High, and Auto settings for Heating 12k Btu/h = 20 Hz to 100 Hz...

  • Page 10: General Data

    GENERAL DATA Pairing Table The following table shows the available outdoor and indoor unit, along with the factory provided controller. Table 1: Four-Way Ceiling Cassette System Pairing Table Outdoor Unit Model Indoor Unit Model Controller LUU097HV LCN098HV4 PQWRHQ0FDB LUU127HV LCN128HV4 LUU189HV LCN188HV4 PQWRHQ0FDB...
  • Page 11 GENERAL DATA Table 2: Four-Way 2 x 2 Ceiling Cassette System General Data. Type Single Zone 2 x 2 Four-Way Ceiling Cassette LC098HV4 LC128HV4 LC188HV4 System (Model) (Indoor Unit / Outdoor Unit) (LCN098HV4 / LUU097HV) (LCN128HV4 / LUU127HV) (LCN188HV4 / LUU189HV) Ceiling Grille Model Number (Sold Separately) PT-UQC / PT-QCHW0 PT-UQC / PT-QCHW0...
  • Page 12 GENERAL DATA Table 3: Four-Way 3 x 3 Ceiling Cassette System General Data. Type Single Zone 3 x 3 Four-Way Ceiling Cassette LC248HV LC368HV LC428HV System (Model) (Indoor Unit / Outdoor Unit) (LCN248HV / LUU249HV) (LCN368HV / LUU369HV) (LCN428HV / LUU429HV)

  • Page 13: Electrical Data

    ELECTRICAL DATA Table 4: Electrical Data. Condenser Fan Motor(s) Voltage Compressor Nominal Compressor Unit Model No. Hertz Voltage Range Motor RLA Condenser Condenser Fan Tons Quantity (Min. to Max.) (Cooling) Fan Quantity. Motor FLA 2 x 2 Four-Way Ceiling Cassettes LUU097HV 11.9 0.25...

  • Page 14: Functions, Controls, And Options

    FUNCTIONS, CONTROLS, AND OPTIONS Table 5: Functions, Controls and Options. System Type 2x2 Ceiling Cassette 3x3 Ceiling Cassette Air Supply Outlets Airflow Direction Control (Up and Down) Auto Auto Auto Swing (Up and Down) Airflow Steps (Fan / Cool / Heat) 4 / 5 / 4 4 / 5 / 4 Comfort Air (Random Fan Speed)

  • Page 15: Outdoor Unit Dimensions

    OUTDOOR UNIT DIMENSIONS LUU097HV, LUU127HV Figure 5: LUU097HV, LUU127HV Outdoor Unit Dimensions. 2-9/16 17-11/16 7-1/2 13/16 13/16 21-15/32 9-29/32 12-31/32 13-29/32 15/16 17-11/16 8-25/32 2-3/4 4-7/16 1-11/32 No. Part Name Air outlet Control cover & service valve cover Vapor pipe connection Liquid pipe connection Conduit Handle...
  • Page 16 OUTDOOR UNIT DIMENSIONS LUU189HV, LUU249HV Figure 6: LUU189HV, LUU249HV Outdoor Unit Dimensions. 16 | PRODUCT DATA ©...
  • Page 17 OUTDOOR UNIT DIMENSIONS LUU369HV, LUU429HV Figure 7: LUU369HV, LUU429HV Outdoor Unit Dimensions. © PRODUCT DATA | 17...

  • Page 18: Indoor Unit Dimensions

    INDOOR UNIT DIMENSIONS LCN098HV4, LCN128HV4 Figure 8: LCN098HV4, LCN128HV4 Indoor Unit Dimensions. 9-19/64 (236) 4-17/32 2-51/64 7-61/64 (115) (71) (202) 7-61/64 (202) 5-29/32 (150) Max. Condensate Lift: 31-1/2 (800) or less 23-5/8 (600) (Ceiling Opening) 20-23/64 (517) (Hanging Bolt) 10-13/64 (259) 7-13/64 (183) 1-11/32...
  • Page 19 INDOOR UNIT DIMENSIONS LCN188HV4 Figure 9: LCN188HV4 Indoor Unit Dimensions. (279) 7-61/64 (202) 6-3/16 2-51/64 (157) (71) 7-61/64 (202) 7-9/16 (192) Max. Condensate Lift: 31-1/2 (800) or less 23-5/8 (600) (Ceiling Opening) 20-23/64 (517) (Hanging Bolt) 10-13/64 (259) 7-13/64 (183) 1-11/32 10-13/64 (259) 14-29/32 (379)
  • Page 20 INDOOR UNIT DIMENSIONS LCN248HV Figure 10: LCN248HV Indoor Unit Dimensions. 20 | PRODUCT DATA ©...
  • Page 21 INDOOR UNIT DIMENSIONS LCN368HV, LCN428HV Figure 11: LCN368HV, LCN428HV Indoor Unit Dimensions. © PRODUCT DATA | 21...

  • Page 22: Acoustic Data

    ACOUSTIC DATA Indoor Units Figure 12: Indoor Unit Sound Pressure Level • Measurements taken with no attenuation and units operating at full load normal Measurement Location. 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 Indoor Units Figure 14: Four-Way Ceiling Cassette Indoor Unit Sound Power Level Diagrams. LCN248HV LCN428HV LCN368HV © PRODUCT DATA | 23...
  • Page 24 ACOUSTIC DATA Outdoor Units Figure 15: Four-Way Ceiling Cassette Outdoor Unit • Measurements taken with no attenuation and units operating at full load normal Sound Pressure Level Measurement Location. operating condition. • Sound level will vary depending on a range of factors such as construction (acous- tic absorption coefficient) of particular area in which the equipment is installed.
  • Page 25 ACOUSTIC DATA Outdoor Units Figure 17: Four-Way Ceiling Cassette Outdoor Unit Sound Power Level Diagrams. LUU369HV LUU429HV LUU189HV, LUU249HV 120.0 120.0 120.0 ■ Cooling ■ Cooling Cooling 110.0 110.0 110.0 NR-115 NR-115 100.0 NR-115 100.0 100.0 NR-110 NR-110 NR-110 NR-105 NR-105 NR-105 90.0...

  • Page 26: Refrigerant Flow Diagrams

    REFRIGERANT FLOW DIAGRAMS LCN098HV4, LCN128HV4 Indoor Units Figure 18: LCN098HV4, LCN128HV4 Refrigerant Flow Diagram. Gas pipe connection port Heat exchanger (flare connection) Heating Cooling Evaporator Outlet Turbo fan Temperature Thermistor Indoor Air Temperature Thermistor Evaporator Inlet Temperature Thermistor Liquid pipe connection port (flare connection) Table 8: LCN098HV4, LCN128HV4 Four-Way Ceiling Cassette Indoor Unit Thermistor Details.
  • Page 27 REFRIGERANT FLOW DIAGRAMS LUU097HV, LUU127HV Outdoor Units Figure 19: LUU097HV, LUU127HV Refrigerant Flow Diagram. Inlet Air Temperature Refrigerant Flow Condenser Out Thermistor Temperature Thermistor Cooling Heating Condensing Temperature Thermistor Flare Connection Electronic Expansion Strainer Strainer Valve High Pressure Sensor 4 way Valve Flare Connection Discharge...
  • Page 28 REFRIGERANT FLOW DIAGRAMS LCN188HV4, LCN248HV, LCN368HV, LCN428HV Indoor Units Figure 20: LCN188HV4, LCN248HV, LCN368HV, LCN428HV Refrigerant Flow Diagram. Gas pipe connection port Heat exchanger (flare connection) Heating Evaporator Outlet Cooling Turbo fan Temperature Thermistor Indoor Air Temperature Thermistor Evaporator Inlet Temperature Thermistor Liquid pipe connection port (flare connection)
  • Page 29 REFRIGERANT FLOW DIAGRAMS LUU189HV, LUU249HV, LUU369HV, LUU429HV Outdoor Units Figure 22: LUU189HV, LUU249HV, LUU369HV, LUU429HV Refrigerant Flow Diagram. Condenser Outlet Pipe Temperature Thermistor Condenser Middle Pipe Temperature Thermistor Ø3/8 Inch 36,000 Btu/h and 42,000 Btu/h Outdoor Units have two (2) fans. Ø5/8 Inch Table 16: LUU189HV, LUU249HV, LUU369HV, LUU429HV Four-Way Ceiling Concealed Outdoor Unit Thermistor Details.

  • Page 30: Wiring Diagrams

    WIRING DIAGRAMS LCN098HV4, LCN128HV4, LCN188HV4 Indoor Units Figure 23: LCN098HV4, LCN128HV4, LCN188HV4 Four-Way Ceiling Cassette Indoor Unit Wiring Diagram. 30 | PRODUCT DATA ©...
  • Page 31 WIRING DIAGRAMS LUU097HV, LUU127HV Outdoor Units Figure 24: LUU097HV, LUU127HV Four-Way Ceiling Cassette Outdoor Unit Wiring Diagram. © PRODUCT DATA | 31...
  • Page 32 WIRING DIAGRAMS LUU189HV Outdoor Units Figure 25: LUU189HV Four-Way Ceiling Cassette Outdoor Unit Wiring Diagram. 7-19 32 | PRODUCT DATA ©...
  • Page 33 WIRING DIAGRAMS LCN248HV, LCN368HV, LCN428HV Indoor Units Figure 26: LCN248HV, LCN368HV, and LCN428HV Four-Way Ceiling Cassette Indoor Unit Wiring Diagram. 7-19 © PRODUCT DATA | 33...
  • Page 34 WIRING DIAGRAMS LUU249HV Outdoor Units Figure 27: LUU249HV Four-Way Ceiling Cassette Outdoor Unit Wiring Diagram. 7-19 34 | PRODUCT DATA ©...
  • Page 35 WIRING DIAGRAMS LUU369HV and LUU429HV Outdoor Units Figure 28: LUU369HV and LUU429HV Four-Way Ceiling Cassette Outdoor Unit Wiring Diagram. 7-19 © PRODUCT DATA | 35...

  • Page 36: Electrical Connections

    1(L1) 2(L2) Terminal Block Indoor • LG Single Zone Four-Way Cassette systems operate at 1Ø, 208-230V, 60Hz. Indoor Unit • Power wiring / power wiring gauge to the outdoor unit(s) must be solid or stranded, and must comply with all National Electrical Code (NEC), UL, and local electrical codes.
  • Page 37 ELECTRICAL CONNECTIONS Figure 31: Single Zone Outdoor Unit to Indoor Unit Wiring and Com- Figure 30: Typical Single Zone Outdoor Unit to Indoor Unit Wiring and munications Cable Diagram For Wiring Lengths GREATER THAN 130 Communications Cable Diagram For Wiring Lengths Up to 130 Feet. Feet.
  • Page 38 Optional controllers (see “Functions, Controls, Options”, or contact an LG representative for more information) can connect to the Four-Way Ceiling Cassette 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 39: Air Velocity And Temperature Distribution

    AIR VELOCITY AND TEMPERATURE DISTRIBUTION Figure 39: LCN098HV4 Air Velocity and Temperature Distribution Charts. Cooling Heating Discharge angle: 40° Discharge angle: 50° Air velocity [ft/s] Air velocity [ft/s] Temperature [°F] Temperature [°F] Figure 40: LCN128HV4 Air Velocity and Temperature Distribution Charts. Cooling Heating Discharge angle: 40°...
  • Page 40 AIR VELOCITY AND TEMPERATURE DISTRIBUTION Figure 41: LCN188HV4 Air Velocity and Temperature Distribution Charts. Figure 42: LCN248HV Air Velocity and Temperature Distribution Charts. Cooling Heating Discharge angle: 40° Discharge angle: 50° Air velocity [ft/s] Air velocity [ft/s] 13ft 10ft 10ft 13ft 13ft 10ft...
  • Page 41 AIR VELOCITY AND TEMPERATURE DISTRIBUTION Figure 43: LCN368HV Air Velocity and Temperature Distribution Charts. Cooling Heating Discharge angle: 40° Discharge angle: 50° Air velocity [ft/s] Air velocity [ft/s] 10.5ft 10.5ft 13.1 13.1 13.1 13.1 16ft 13ft 10ft 10ft 13ft 16ft 16ft 13ft 10ft...

  • Page 42: Accessories

    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. Recommended Minimum PC Configuration: •...
  • Page 43 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 44: Four-Way Ceiling-Cassette Performance Data

    PERFORMANCE DATA Cooling Capacity Data on page 45 Heating Capacity Data on page 51 Maximum Heating Capacity Data on page 54 Equipment Selection Procedure on page 57...

  • Page 45: Cooling Capacity

    PERFORMANCE DATA Cooling Capacity LC098HV4 Cooling Capacity Table for LC098HV4 (LUU097HV + LCN098HV4) Table 18: LCN098HV4 / LUU097HV Cooling Capacities. Indoor Air Temp. °F DB / °F WB Outdoor Air Temp. 68 / 57 73 / 61 77 / 64 80 / 67 86 / 72 90 / 75...
  • Page 46 PERFORMANCE DATA Cooling Capacity LC128HV4 Cooling Capacity Table for LC128HV4 (LUU127HV + LCN128HV4) Table 19: LCN128HV4 / LUU127HV Cooling Capacities. Indoor Air Temp. °F DB / °F WB Outdoor Air Temp. 68 / 57 73 / 61 77 / 64 80 / 67 86 / 72 90 / 75...
  • Page 47 PERFORMANCE DATA Cooling Capacity LC188HV4 Cooling Capacity Table for LC188HV4 (LUU189HV + LCN188HV4) Table 20: LCN188HV4 / LUU189HV Cooling Capacities. Indoor Air Temp. °F DB / °F WB Outdoor Air Temp. 68 / 57 73 / 61 77 / 64 80 / 67 86 / 72 90 / 75...
  • Page 48 PERFORMANCE DATA Cooling Capacity LC248HV Cooling Capacity Table for LC248HV (LUU249HV + LCN248HV) Table 21: LCN248HV / LUU249HV Cooling Capacities. Indoor Air Temp. °F DB / °F WB Outdoor Air Temp. 68 / 57 73 / 61 77 / 64...
  • Page 49 PERFORMANCE DATA Cooling Capacity LC368HV Cooling Capacity Table for LC368HV (LUU369HV + LCN368HV) Table 22: LCN368HV / LUU369HV Cooling Capacities. Indoor Air Temp. °F DB / °F WB Outdoor Air Temp. 68 / 57 73 / 61 77 / 64 80 / 67 86 / 72 90 / 75...
  • Page 50 PERFORMANCE DATA Cooling Capacity LC428HV Cooling Capacity Table for LC428HV (LUU429HV + LCN428HV) Table 23: LCN428HV / LUU429HV Cooling Capacities. Indoor Air Temp. °F DB / °F WB Outdoor Air Temp. 68 / 57 73 / 61 77 / 64 80 / 67 86 / 72 90 / 75...

  • Page 51: Heating Capacity

    PERFORMANCE DATA Heating Capacity LC098HV4, LC128HV4 Heating Capacity Table for LC098HV4 (LUU097HV + LCN098HV4) Table 24: LCN098HV4 / LUU097HV Heating Capacities. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -4.4 4.38 0.61 4.06 0.63 4.03 0.64 3.99 0.64 3.95...
  • Page 52 1.75 19.90 1.77 19.79 1.77 19.71 1.78 19.30 1.79 Heating Capacity Table for LC248HV (LUU249HV + LCN248HV) Table 26: LCN248HV / LUU249HV Heating Capacities. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -4.4 13.03 1.46 12.24 1.50...
  • Page 53 PERFORMANCE DATA Heating Capacity LC368HV, LC428HV Heating Capacity Table for LC368HV (LUU369HV + LCN368HV) Table 28: LCN368HV / LUU369HV Heating Capacities. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -4.4 15.17 2.04 14.16 2.10 14.01 2.17 13.83 2.20 13.68...

  • Page 54: Maximum Heating Capacity

    PERFORMANCE DATA Maximum Heating Capacity LC098HV4, LC128HV4 Maximum Heating Capacity Table for LC098HV4 (LUU097HV + LCN098HV4) Table 30: LCN098HV4 / LUU097HV Maximum Heating Capacities. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 8.71 1.11 8.51 1.15 8.27 1.18...
  • Page 55 3. Grey shading indicates reference data. When operating at this temperature, these values can be different if the system is not running consistently. Maximum Heating Capacity Table for LC248HV (LUU249HV + LCN248HV) Table 32: LCN248HV / LUU249HV Maximum Heating Capacities.
  • Page 56 PERFORMANCE DATA Maximum Heating Capacity LC428HV Maximum Heating Capacity Table for LC368HV (LUU369HV + LCN368HV) Table 34: LCN368HV / LUU369HV Maximum Heating Capacities. Outdoor Air Temp. Indoor Air Temp. °F DB °F DB °F WB -13.4 30.46 4.36 29.78 4.51 28.93 4.65 28.45...

  • Page 57: Equipment Selection Procedure

    32.8 49.2 65.6 98.4 131.2 196.9 229.7 Cooling Capacity Coefficient Factor. LC188HV4 (18,000 Btu/h) 99.3 97.9 96.6 93.8 91.1 LC248HV (24,000 Btu/h) 99.3 97.9 96.6 93.8 91.1 Rate of Capacity Change (%) LC368HV (36,000 Btu/h) 99.3 97.9 96.6 93.8 91.1 88.4...
  • Page 58 • Use caution when sizing to meet listed capacity specifications for the scheduled manufacturer’s equipment. If further system design assistance is needed, or you have a unique application you would like to discuss, contact your LG sales rep. 58 | PERFORMANCE DATA...

  • Page 59: Application Guidelines

    APPLICATION GUIDELINES Placement Considerations on page 60 Installing Outdoor Units Indoors on page 68 Refrigerant Piping Design on page 71...
  • Page 60 PLACEMENT CONSIDERATIONS Indoor Unit Selecting the Best Location for the Indoor Unit WARNING explosion, and physical injury or death. Figure 47: Indoor Unit Clearance Requirements. Do’s Select a location for installing the indoor units that will meet the following conditions: •...
  • Page 61 PLACEMENT CONSIDERATIONS Indoor Unit • Indoor units (IDUs) should not be placed in an environment where the IDUs will be exposed to harmful volatile organic compounds (VOCs) or in environments where there is improper air make up or supply or inadequate ventilation. If there are concerns about VOCs in the environment where the IDUs are installed, proper air make up or supply and / or adequate ventilation should be provided.
  • Page 62 PLACEMENT CONSIDERATIONS Outdoor Unit Selecting the Best Location for the Outdoor Unit 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 63 LC098HV4, LC128HV4 Insulation thickness (value in parenthesis) = 3/8 inch. LC188HV4 Insulation thickness (value in parenthesis) = 1 inch. LC248HV, LC368HV, LC428HV Insulation thickness (value in parenthesis) = 3/4 inch. Tie-Downs and Lightning Protection Figure 51: Lightning Protection Diagram. Tie-Downs...
  • Page 64 PLACEMENT CONSIDERATIONS Outdoor Unit Oceanside Applications Figure 52: Oceanside Placement Using Windbreak. Use of a Windbreak to Shield from Sea Wind Windbreak Ocean winds will cause corrosion, particularly on the condenser and • Avoid installing the outdoor unit where it would be directly Sea wind exposed to ocean winds.
  • Page 65 PLACEMENT CONSIDERATIONS 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 66 PLACEMENT CONSIDERATIONS Outdoor Unit Outdoor Unit (36,000 and 42,000 Btu/h Capacity) Service Access and Allowable Clearances 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...
  • Page 67 PLACEMENT CONSIDERATIONS 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 above, and on both Where there are obstacles on both suction suction and discharge sides (discharge side obstacle and discharge sides (discharge side obstacle...
  • Page 68 PLACEMENT CONSIDERATIONS Installing Outdoor Units Indoors Installing Outdoor Units Indoors Single Zone Cassette 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 69 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. •...
  • Page 70 PLACEMENT CONSIDERATIONS Installing Outdoor Units Indoors Open Rate by Louver Radian Figure 57: 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...

  • Page 71: Refrigerant Piping Design

    Additional Refrigerant Needed (oz/ft) 0.22 0.43 0.43 Figure 59: Typical LC098HV4 and LC128HV4 System Layout. Figure 60: Typical LC188HV4 and LC248HV System Layout. Unit = Feet Unit = Feet Max Length = A Max Length = A Max Elevation = B...
  • Page 72 20001747 ISO 9001: 2008 LG ELECTRONICS INC. EM_SZ_Cassette_02_23 Supersedes: EM_SZ_Cassette_12_22 EM_SZ_Cassette_06_21 EM_SZ_Cassette_05_21 EM_SZ_Cassette_04_21 EM_SZ_Cassette_10_20 EM_SZ_Cassette_09_20 EM_SZ_Cassette_09_19 EM_SZ_Cassette_2_19 LG Electronics, U.S.A., Inc. EM_SZ_Cassette_12_18 Air Conditioning Technologies EM_SZ_Cassette_11_18 4300 North Point Parkway EM_SZ_Cassette_8_17 Alpharetta, Georgia 30022 EM_SZ_Cassette_7_16 www.lghvac.com DFS-EM-AC-001-US_014D02...

This manual is also suitable for:

Lc128hv4Lc188hv4Lc098hv4Lc368hvLc428hvLcn248hv ... Show all

Table of Contents