LG LH247HV, Engineering Manual

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6 | IntroductIon
Ceiling-Concealed Duct (High Static) System Engineering Manual
convergence of technological Innovation with Flexibility and Style
arCHiteCtural aPPeal
Ceiling-Concealed duct dFS Systems
A ceiling-concealed duct (high static) DFS system provides a system
designer an edge to engineer a system with individual control, and
design flexibility with advanced controls. Ceiling-concealed duct
systems are 208-230V/60Hz/1PH systems available in a nominal
capacities of 2 and 3 tons, and are best suited for applications with
zones that require heating or cooling, such as residential, and small
business office buildings.
inverter technology
LG ceiling-concealed duct (high static) air-source systems offer
zoning without the need for zone damper systems. The advanced
controls of the ceilling-concealed duct system provide exceptional
building dehumidification and temperature control, and can rapidly
adapt system operating parameters to the ever changing building
load. Single-zone ceiling-concealed duct systems are easy to de-
sign, install, and maintain. The modular design allows occupants to
control their environmental condition, providing individualized control
of the set-point temperature and allowing occupants to condition
only the occupied zones.
Inverter variable-speed compressors are also measurably quieter
and consume less energy than those in conventional air
Benefits of Ceiling-Concealed Duct
(High Static) Systems
• Inverter technology
• Available in 24,000 and 36,000 Btu/h capacities
• All-season use
—
heat pump models for both cooling and heat-
ing capabilities
• Operating ranges for outdoor units of 5°F (DB) to 118°F for
cooling; 0°F to 64°F (WB) for heating
• Operating ranges for indoor units of 64°F to 86°F for cooling;
60°F to 86°F for heating
• Quiet operation inside and outside
conditioners. The Inverter compressor ramps up or down to match
the required room capacity and maintain the comfort level. When the
selected temperature is reached, the inverter compressor oper-
ates at low speed to maintain that comfort level, thereby using less
energy.
adaptable and Flexible
Ceiling-concealed duct DFS systems allow cooling or heating for a
single room without the need for extensive remodeling. Long refrig-
erant piping lengths allow for extra design flexibility in indoor unit
installation. These units may be used for a number of residential or
commercial environments such as:
• Older homes
• New home construction
• Office buildings
• Restaurants
• Hospitals / Medical facilities
• Schools
• Nursing homes
• Retail establishments
• Houses of worship
Figure 1: Ceiling-Concealed Duct (High Static) System.