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Multi V Water IV

Multi V Water IV
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Multi V Water IV

Product catalog summary
Introduction to LG and VRF Systems
LG Electronics, part of the LG Group established in 1947, is a prominent manufacturer of air conditioning systems, including VRF (Variable Refrigerant Flow) systems. Notable achievements include the launch of the first LG VRF system in 1998 and leading annual air conditioner sales in 2004.
Why Choose LG VRF Systems?
The LG Multi V Water IV system offers superior load matching with inverters and multiple compressor water source units, ensuring efficient operation and energy conservation. It is certified to AHRI Standard 1230 and features a modular design for flexible usage.
Design and Reliability
The system is designed for quality and reliability, with features like oil migration protection and quiet operation. Indoor units operate as low as 23 dB(A), and outdoor units at 49 dB(A), with various styles to suit different interiors.
Adaptability and Flexibility
Available in different voltages, the system suits various building types, including schools and hotels. Its modular design reduces installation costs and space requirements, enhancing leasable space.
Sustainability and Standards
The system supports sustainable building practices and LEED® certification, using refrigerant R410A and offering high energy performance with advanced controls.
Installation and Maintenance
LG provides comprehensive training for installation and commissioning, with the LGMV service tool aiding in system monitoring and troubleshooting.
Advanced Technology
The system features advanced compressor technology with a digitally controlled inverter speed compressor for precise load matching and efficiency.
Applications
The system can connect to cooling tower systems, with recommendations for closed-loop systems or intermediate heat exchangers for optimal performance.
Overview
The document outlines technical specifications and configurations for LG Multi V Water IV systems, suitable for heating and cooling applications using water source technology.
System Configurations
  • Geothermal Systems: Utilize stable ground temperatures for heat exchange.
  • Hybrid Geothermal Systems: Combine geothermal fields with cooling towers for peak load management.
Product Specifications
  • Units: Includes heat pump and heat recovery models with capacities from 6 to 48 tons.
  • Electrical Ratings: Available in 208/230V and 460V, 3-phase configurations.
  • Temperature Range: Inlet water temperature ranges from 23°F to 113°F.
Heat Recovery
  • Transfers heat from cooling zones to heating zones, optimizing energy use.
  • Allows zoned heating and cooling, enhancing building diversity utilization.
Installation Considerations
  • Systems can be configured in series or parallel to optimize piping.
  • Heat recovery units do not require condensate drains, reducing costs.
Technical Data
  • Includes nominal and rated capacities, power supply requirements, dimensions, weight, sound pressure levels, and maximum connectable indoor units.
  • Flow rates and pressure drops for heat exchangers are specified.
Specifications
Detailed specifications for various models include dimensions, net weight, sound pressure levels, compressor type, heat exchanger type, flow rate, pressure drop, and refrigerant type.
Procedures and Standards
Rated capacities follow AHRI Standard 1230, and sound pressure levels are tested under ISO Standard 3794.
Refrigerant and Control
All models use R410A refrigerant with an electronic expansion valve (EEV) for control.
Water Pipe Connection Details
Components required for water pipe connections include balancing valves, gate valves, and flow switches.
Glycol Correction Factors
Correction factors for methanol, ethylene glycol, and propylene glycol are provided for various concentrations.
Water Quality Requirements
Specifies acceptable ranges for water quality parameters like pH, conductivity, and chlorine ions.
Accessories
Includes headers, Y-branches, LGMV software, and a variable valve control kit to enhance system performance.
Technical Support
LG offers a technical support call center for design, installation, and technical support for VRF systems.
Note
LG reserves the right to change specifications without notice for continual product development.
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Catalog excerpts

Multi V Water IV-2

Who is LG? LG Electronics is a division of the LG Group which was founded in 1947. LG air conditioning systems were first manufactured in 1968. With inverter-driven commercial and residential air conditioning equipment and controls, LG is among the world’s largest volume compressor and HVAC systems manufacturers, with eight global production sites.

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Multi V Water IV-3

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Multi V Water IV-4

Why LG VRF? DEHUMIDIFICATION AND COMFORT CONTROL EFFICIENT DESIGN Using inverters and multiple compressor water source units, the LG Multi V Water IV system offers superior load matching, which prevents constant cycling or large temperature swings. Tight temperature control through precise load matching ensures maximum comfort, efficient operation, and superior dehumidification. No need to use large distribution ducts– the Multi V Water IV removes losses that are unavoidable in other systems. With the use of optimized scroll compressors and inverter technology, Multi V Water IV systems minimize...

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Multi V Water IV-5

STYLISH DESIGN Multi V indoor units are available in a wide range of styles to complement any interior design style. With indoor unit choices including cassettes that mount flush to the ceiling, ducted units that are completely concealed in the ceiling, and mirror finished wall mounted units that fit into any decor, the LG Multi V system offers unparalleled aesthetic design. Floor Standing Work without distraction. With indoor units that can operate at sound levels as low as 23 dB(A), and outdoor units that operate as low as 49 dB(A), LG Multi V Water IV creates a comfortable environment so quiet...

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Multi V Water IV-6

Architectural Appeal ADAPTABLE AND FLEXIBLE SMALLER CHASES AND PLENUMS Multi V Water IV units are available in 208/230V as well as 460V and can adapt to a wide range of building types and sizes, including schools, hotels, retail stores, and offices. Multi V Water IV is ideal for retrofit projects where existing condenser water piping systems can be utilized. Water source units are installed indoors, eliminating the need for multiple condensing units mounted on a roof or at grade level, which allows for a cleaner exterior look to a building. For taller buildings, Multi V Water IV units offer flexibility...

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Multi V Water IV-8

The architectural and engineering community is adopting a balanced design approach that considers energy and water consumption, repetitive maintenance costs, the impact of development on the environment, and the building’s initial cost as equally important factors in developing high-performance, sustainable buildings that will increase building value. The American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) and the U.S. Green Building Council (USGBC) have been instrumental in developing and documenting voluntary best practice standards that provide the construction...

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Multi V Water IV-9

Multi V variable refrigerant flow air conditioning systems are engineered for sustainable green building and provides opportunities for designers to claim numerous LEED® prerequisites and points. 1. he Multi V Water IV system uses refrigerant R410A T 2. he Multi V Water IV offers exceptional energy performance by using state-of-the-art T controls and high efficiency variable speed evaporator fan assemblies with a variable speed inverter-driven compressor that provide superior load matching and energy conservation 3. he modular design of the Multi V Water IV uses multiple indoor units, allowing...

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Multi V Water IV-10

Engineering Advantage INTUITIVE DESIGN LATS Multi V design and layout software provides an intuitive method of laying out a Multi V Water IV system. LATS Multi V checks refrigerant piping lengths and elevations, and assists with the sizing of indoor and water source units by calculating capacity based on design conditions. LATS Multi V can import AutoCAD™ drawings and lay out the Multi V Water IV system to scale, without the need to add AutoCAD™ software to your computer. When the user finishes the AutoCAD™ system layout, all of the refrigerant piping lengths will be calculated and a drawing...

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Multi V Water IV-11

The benefits are numerous: modern style, mirror units for interior designers, less piping for installers, and energy efficiency for owners. LG has low sound levels, so units are quiet and can be installed inside a building. LG-manufactured inverter scroll compressors optimize system energy efficiency and are certified using AHRI Standard 1230. Variable Refrigerant Flow is a technology introduced as a system to minimize efficiency losses and provide sustainable energy benefits. LG VRF systems are engineered to save on the cost of ducts and distribution fans. VRF water systems can tie into existing...

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Multi V Water IV-12

Installation and Commissioning Support LG is committed to the success of every Multi V Water IV project. Proper installation is important to operation and system longevity. Installation and commissioning training conducted at our training centers provides students with the knowledge and tools to properly install Multi V Water IV systems. For on-site startup and commissioning, our technical staff or an approved technical agent is on hand to record system operation to start the warranty validation process. Easy to maintain Though highly advanced, Multi V Water IV equipment is simple to maintain,...

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Multi V Water IV-14

LG is committed to excellence in Multi V system design and installation training. LG offers complete training for engineers, architects, installers, and servicers to ensure every Multi V Water IV installation is successful. Engineers and Architects LG has designed a comprehensive workshop tailored to specifying engineers and architects. Training includes a complete product and controls introduction, which explains advanced features and benefits of the LG Multi V Water IV system. A live tutorial covers the setup and use of the LATS Multi V design and layout software. A standard feature of all...

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