PRODUCT DATA | 9
Product Data
'XHWRRXUSROLF\RIFRQWLQXRXVSURGXFWLQQRYDWLRQVRPHVSHFL¿FDWLRQVPD\FKDQJHZLWKRXWQRWL¿FDWLRQ
©
/*(OHFWURQLFV86$,QF(QJOHZRRG&OLIIV1-$OOULJKWVUHVHUYHG³/*´LVDUHJLVWHUHGWUDGHPDUNRI/*&RUS
General
The LG Multi V S Three-Phase 208-230V 60Hz heat pump system
consists of an outdoor unit, two or more indoor units, integrated
system controls, and interconnecting field-provided refrigerant pipe
containing various fittings including Y-Branch kits and Header kits
supplied by LG. LG components are manufactured in a facility that
meets or exceeds International Organization for Standardization
(ISO) 9001 and 14001.
Casing
The outdoor unit case is constructed from 22-gauge coated metal.
Exterior panels are cleaned and finished with a weather-resistant
baked enamel finish. An easily removable front corner panel is
provided to allow access to major components and control devices.
Outdoor unit fan(s) are covered with guards made of heavy gauge,
heavy duty polymeric resin. The outdoor unit coil is protected with
a heavy gauge steel wire guard finished with baked enamel. Paint
color is “warm gray.”
Refrigeration System
The refrigeration system consists of a single refrigeration circuit and
uses refrigerant R410A. The outdoor unit is provided with factory
installed components, including a refrigerant strainer, oil separator,
accumulator, hot gas bypass valve, liquid injection valve, four-way
reversing valve, electronic controlled expansion valve (EEV), high
and low side charging ports, service valves, and interconnecting
piping. Also included is an integral subcooler assembly consisting
of a double spiral tube type heat exchanger and EEV providing
refrigerant subcooling modulation up to 23°F. The unit comes factory
charged with 13.2 lbs (6- and 8- Ton) of refrigerant.
Refrigeration Oil Control
The refrigeration oil level in the compressor is maintained using
a two-stage oil control system. The compressor discharge port is
equipped with an oil filtering device designed to restrict oil loss
from the compressor. The high-pressure discharge vapor leaves the
compressor and immediately enters a centrifugal oil separator that
has no moving parts designed to extract oil from the refrigerant gas
stream. A gravity drain returns captured oil back to the compressor
sump. The outdoor unit microprocessor is programmed to flush the
refrigerant piping system for a minimum period of three (3) minutes
after eight (8) hours of compressor operation.
Single Inverter /
Compressor
The outdoor unit is equipped with one hermetically sealed scroll
(6-, 8-ton) compressor. The compressor is specifically designed for
the refrigerant provided and is manufactured by LG. The frequency
inverter is designed by LG and is capable of providing a modulation
range for 6 and 8 tons from 15 Hz to 120 Hz (cooling) and 20
Hz to 150 Hz (heating), modulating in increments of 1.0 Hz. The
compressor motor
is suction gas-
cooled and has an
acceptable voltage
range of ±10% of
nameplate voltage.
External suction
and discharge
temperature and
pressure sensors are
provided to protect
the compressor
from damage
caused by over /
under temperature
or over / under
pressure conditions.
The compressor
is provided with a
positive displacement
oil pump providing
sufficient oil film on
all bearing surfaces
across the entire
inverter modulation
range. The compressor is factory charged with Polyvinyl ether (PVE)
refrigeration oil having no hygroscopic properties. Compressor
bearings are Teflon® coated. The compressor is wrapped with a heat
resistant, sound attenuating blanket and mounted on rubber isolation
grommets.
Outdoor Unit Coil
Outdoor unit coils are a minimum of three rows (6-, 8-ton), 14 fins
per inch, and manufactured using copper tubes with mechanically
bonded aluminum louvered fins. Fin surfaces are coated with Black
Fin™ (6-, 8-ton) corrosion resistant hydrophilic silica gel coating.
Coils are pressure tested at a minimum of 551 psig.
Fans and Motors
Units are furnished with two (6- 8- ton) axial flow fans providing
horizontal airflow from the rear and discharging from the front of the
unit. Fan blades are 20-1/2 inch diameter, balanced, and made of
durable acrylonitrile butadiene styrene (ABS) polymeric resin. Motors
are designed to operate between 200 and 950 RPM in cooling and
heating (6-ton), and between 200 and 1,000 RPM in cooling and
heating (8-ton). Fans are driven by digitally controlled inverters
that vary the fan speed. Motors are brushless, digitally controlled
(BLDC) and have permanently lubricated and sealed ball bearings.
All outdoor unit fans are controlled by an inverter drive mounted near
the main microprocessor.
The outdoor unit fan speed is controlled using an algorithm that
provides three pre-programmed fan speeds. DIP Switch adjustable
settings limit night time (off peak) fan speed to reduce fan generated
noise by up to 10 dB(A).
MECHANICAL SPECIFICATIONS
Figure 3: Multi V S Three-Phase Outdoor Unit.
THREE-PHASE
