Single-Zone Four-Way Ceiling-Cassette System Engineering Manual
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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 LC098HV4 (9,000 Btu/h) LC187HV (18,000 Btu/h) LC367HV (36,000 Btu/h) LC128HV4 (12,000 Btu/h) LC188HV4 (18,000 Btu/h) LC427HV (42,000 Btu/h) LC247HV (24,000 Btu/h) 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. 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. About LG Electronics, Inc. Inverter Systems LG Electronics, Inc. is a global leader and technology innovator LG Single Zone Four-Way Ceiling Cassette air-source systems offer in consumer electronics, mobile communications, and home the opportunity to minimize ductwork in the same configuration. The appliances. LG Electronics, Inc. comprises five business units— system offers zoning without the need for zone damper systems. Home Entertainment, Mobile Communications, Air Conditioning, The LG Single Zone Four-Way Ceiling Cassette system’s advanced Business Solutions, and Home Appliance. LG is one of the world’s controls provide exceptional building dehumidification and tempera- leading producers of flat panel televisions, audio and video products, ture control, and can rapidly adapt system operating parameters mobile handsets, air conditioners, and washing machines. LG’s to the ever changing building load. The LG Single Zone Four-Way commercial air conditioning business unit was established in 1968 Ceiling Cassette system is easy to design, install, and maintain. and has built its lineup of residential and commercial products to The modular design allows occupants to control their environmental include VRF, Multi F, duct-free split systems, packaged terminal air condition, providing individualized control of the setpoint temperature conditioners (PTACs), and room air conditioners. In 2011, the air and allowing occupants to condition only the occupied zones. conditioning and energy solutions business unit grew to include LED lighting and solar products. For more information, visit www.lghvac. Quality Commitment com. LG is committed to the success of Duct-Free Split projects. We provide industry leading technical support during installation and Duct-Free Split Systems commissioning. LG offers a variety of classes designed for installers LG HVAC systems offer a range of solutions that are cost efficient, and servicers to ensure that every system installation is completed quiet and attractive. Duct-Free Split systems are “split” into indoor successfully. and outdoor units, and provide a smart alternative to both central Classes are conducted at LG’s training centers and in field locations HVAC and window-mounted air conditioners. These inverter heat at various times throughout the year and upon special request. Introduction pump systems are available in a variety of configurations to suit different cooling and heating situations. Installation by a qualified HVAC contractor is safe and easy – little to no duct work or sheet metal is required. 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. INTRODUCTION | 3 TABLE OF CONTENTS Product Features and Benefits ��������������������������������������������������������������������������������������������������������������������������������������������� 8 Unit Nomenclature ������������������������������������������������������������������������������������������������������������������������������������������������������������������ 9 Four Way Ceiling Cassette System Data ���������������������������������������������������������������������������������������������������������������������������� 10 Four-Way Ceiling Cassette Pairing Table ��������������������������������������������������������������������������������������������������������������������������� 10 Specifications ......................................................................................................................................................................11 Electrical Data .................................................................................................................................................................... 13 Outdoor Unit Dimensions ................................................................................................................................................... 14 Indoor Unit Dimensions ...................................................................................................................................................... 17 Acoustic Data ..................................................................................................................................................................... 21 Air Velocity and Temperature Distribution ........................................................................................................................... 23 Refrigerant Flow Diagrams ................................................................................................................................................. 27 Outdoor Unit Wiring Diagram ��������������������������������������������������������������������������������������������������������������������������������������������� 31 Indoor Unit Wiring Diagram ................................................................................................................................................ 35 Accessories ........................................................................................................................................................................ 37 Performance Data ����������������������������������������������������������������������������������������������������������������������������������������������������������������� 40 Cooling Capacity Tables ..................................................................................................................................................... 40 Heating Capacity Tables ..................................................................................................................................................... 47 Application Guidelines ��������������������������������������������������������������������������������������������������������������������������������������������������������� 52 Equipment Selection Procedure ......................................................................................................................................... 52 Building Ventilation Design Guide ...................................................................................................................................... 54 Placement Considerations .................................................................................................................................................. 59 Refrigerant Piping Design ��������������������������������������������������������������������������������������������������������������������������������������������������� 68 Design Guideline Summary ................................................................................................................................................ 68 Selecting Field-Supplied Copper Tubing ............................................................................................................................ 69 Refrigerant Piping System Layout ...................................................................................................................................... 70 Condensate Drain Piping ���������������������������������������������������������������������������������������������������������������������������������������������������� 76 Electrical and Mechanical Specifications �������������������������������������������������������������������������������������������������������������������������� 52 Electrical Connections ........................................................................................................................................................ 77 Mechanical Specifications .................................................................................................................................................. 81 Acronyms ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������ 83 Four-Way Ceiling Cassette System Engineering Manual Four-Way TABLE OF SYMBOLS This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or DE serious injury. This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or WARNING serious injury. This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or C moderate injury. Note: This symbol indicates situations that may result in equipment or property damage accidents only. This symbol indicates an action that should not be performed. Due to our policy