Product Features And Benefits - LG LH247HV Engineering Manual

ProduCt FeatureS and BeneFitS

Ceiling-Concealed duct
(High Static) Systems
Single zone ceiling-concealed duct (high
static) systems are equipped with inverter
components that offer superior load match-
ing and long piping installation. The product
works for optimizing power consumption in
residential and small office buildings. Using
a ducted indoor unit with custom tempera-
ture controls allow for precise temperature
settings in each zone of the building.
Ceiling-concealed duct (high static) indoor
units allow flexibility in interior design.
lower Sound levels
When outdoor units operate fully loaded,
they have one of the quietest sound levels in
the industry, operating as low as 48 dB(A).
To promote a quiet, comfortable environ-
ment, ceiling-concealed duct (high static)
indoor units operate as low as 35 dB(A). LG
customers often ask if the outdoor unit is
running after commissioning is complete.
All rotating components are soft-started by
the controller using digitally controlled invert-
ers, which reduce undesirable noise caused
by fans and compressors cycling on and off.
Comfort Control at its
Best
Tight temperature control through pre-
cise load matching. Unlike traditional air
conditioning control systems, which use
thermostatic controls to maintain room
temperatures, LG inverters continuously
vary the indoor unit fan speed and refriger-
ant flow, indirectly providing lower and more
consistent humidity levels in the conditioned
space. The longer the indoor coil tempera-
ture is below the dewpoint of the room in
conjunction with air movement across the
coil, the space humidity level will vary little,
compared to technologies that cycle fans
and compressors on and off multiple times
per hour. The outdoor unit responds by vary-
ing the compressor speed and fan motors as
needed to maintain system operating pres-
sure. As a result, ceiling-concealed duct
systems delivers precise space temperature
control.
8 | duct (HIgH StatIc)
inverter driven
The compressor is optimized to maximize
compressor efficiency, which reduces power
consumption and monthly utility bills. This
inverter technology allows the LG ceiling-
concealed duct (high static) outdoor unit to
vary the compressor motor shaft speed and
deliver an appropriate amount of cooling to
the indoor unit. Occupants remain comfort-
able while utility costs are reduced.
Simplified installation
The LG ceiling-concealed duct (high static)
system simplifies and reduces mechanical
and control system design time. The designer
no longer has to be concerned with intercon-
necting chilled and condenser water piping,
complicated air distribution duct systems,
matching and selecting chillers, towers, pumps,
coils, fans, air handlers, or Variable Air Volume
(VAV) boxes.
operating range
Ceiling-concealed duct (high static) systems
are available in 2 or 3 ton capacities. Operating
ranges for the outdoor units are Cooling: 5°F
DB to 118°F DB; Heating: 0°F WB to 64°F WB.
Compact Size
The LUU247HV outdoor unit has a footprint
of 37-13/32 W x 32-27/32 H x 13 D; the
LUU247HV outdoor unit has a footprint of 37-
13/32 W x 54-11/32 H x 13 D. The LHN247HV
indoor unit is 46-17/32 W x 11-23/32 H x 17-
23/32 D; the LHN367HV indoor unit is 48-7/16
The following table shows the available outdoor and indoor unit, along with the factory provided
controller.
Table 1: Ceiling Concealed Duct (High Static) System Pairing Table
Outdoor Unit Model (Btu/h)
LUU247HV (24,000)
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.
x 14-31/32 x 23-7/32, allowing the products to
be installed in ceiling plenums.
Heat transfer efficiency
Fin Design with GoldFin™ Coating
All ceiling-concealed duct outdoor units are
provided with large surface coils made of
copper tubes with louvered aluminum fins
designed to maximize unit operating efficien-
cy over a wide range of ambient conditions.
Standard from the factory, the LG ceiling-
concealed duct outdoor coil fin surface is
coated with LG's exclusive GoldFin™ anti-
corrosive coating designed to prevent natural
surface corrosion of the aluminum fins. This
maintains heat transfer properties of the coil
for an extended time. A hydrophilic coating
is applied to the outdoor unit coil fin sur-
face over the GoldFin coating. This coating
enhances the development of heavier water
droplets gathering on the fin surface. As a
result, the droplets roll off the fin surfaces,
delaying the point when frost forms on the
coil surface during heating operation. This
coating also makes it possible to easily clean
the outdoor unit coil using a mild soap.
other Features
• Inverter (Variable Speed Compressor)
• Auto restart
• Auto operation
• Auto changeover
• Sleep mode
• Internal condensate pump included
• Precision Load Matching
• Follows AHRI 210/240
Indoor Unit Model (Btu/h)
LHN247HV (24,000),
LUU367HV (36,000)
LHN367HV (36,000)
Controller
PQRCVCL0QW