Multi F Engineering Manual

ManualsBrandsLG ManualsAir Conditioners42000 BTU Cooling / 45000 BTU Heating 20.5 SEER 208/230 Volt Four Zone Mini Split Package with Ceiling Cassette Evaporators

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4 | INTRODUCTION

Multi F and Multi F MAX Indoor Unit Engineering Manual

About LG Electronics, Inc.

LG Electronics is a global leader and technology innovator in con-

sumer electronics, mobile communications, and home appliances.

LG Electronics comprises five business units—Home Entertainment,

Mobile Communications, Air Conditioning, Business Solutions, and

Home Appliance. LG is one of the world’s leading producers of flat

panel televisions, audio and video products, mobile handsets, air

conditioners, and washing machines. LG’s commercial air condition-

ing business unit was established in 1968 and has built its lineup of

residential and commercial products to include VRF, Multi F, duct-

free split systems, packaged terminal air conditioners (PTACs), and

room air conditioners. In 2011, the air conditioning and energy solu-

tions business unit grew to include LED lighting and solar products.

For more information, visit www.lg.com.

Multi-Zone Systems

LG HVAC systems offer a range of solutions that are cost efficient,

quiet and attractive. Multi-zone systems are “split” into indoor and

outdoor units, and provide a smart alternative to both central HVAC

and window-mounted air conditioners. These inverter heat pump sys-

tems are available in a variety of configurations to suit different cool-

ing and heating situations. Installation by a trained HVAC contractor

is safe and easy – little to no duct work or sheet metal is required.

Multi F Systems

LG’s inverter heat pumps can support two, three, or four indoor

units that are typically installed in separate rooms. Indoor units can

be used with different controllers, allowing the customer to set the

temperature individually. Indoor units are available in several dif-

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wall-mounted, standard wall-mounted, four-way ceiling cassettes,

ceiling-concealed duct (high and low static), and vertical-horizontal air

handling models. Multi F MAX systems can operate up to eight indoor

units through two-, three-, or four-port branch distribution units.

Adaptable and Flexible

Multi F outdoor units can be adapted to a wide range of building ap-

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residences. The system components are lightweight and compact so

they can be placed in buildings without expensive cranes, they easily

fit into most service elevators, and they can be set in place with

minimal structural reinforcements requirements.

Multi F technology allows you to pipe farther by reaching areas of the

building that would require the installation of a second system when

using traditional direct-expansion cooling and heating equipment. Multi

F provides the designer with uncompromised pipe system engineering

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F is best suited to reach the farthest corners and elevations.

Smaller Chases and Plenums

LG Multi F systems use refrigerant piping to move heat, resulting in

smaller space requirements for piping as compared to chilled water

or roof top systems. This helps reduce the overall construction and

material cost of the building, and gives back leasable space. Flexible

and logical placement of system components, reduced back-and-

forth pipe lengths, and fewer joints lowers installation costs and

minimizes potential leaking.

Quality Commitment

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technical support during installation and commissioning. LG offers

a variety of classes designed for installers and servicers on Multi F

installation. Classes are con-

ducted at LG’s training centers

and in field locations at various

times throughout the year and on

special request.

Benefits of Multi F Systems

• Individual zone control

• Long refrigerant piping lengths

• High refrigerant piping elevation differences

• Maximum flexibility

• Operating ranges of 14°F to 118°F (DB) in cooling and -4°F to

75°F (DB) in heating if connected to standard Multi F Outdoor Units

or -13°F to 75°F (DB) in heating if connected to Multi F with LG

REDº Outdoor Units.

• Quiet and comfortable environment

• Reduced ductwork

CONVERGENCE OF TECHNOLOGY,

INNOVATION, FLEXIBILITY, & STYLE

MULTI