8| PRODUCT DATA
Four-Way Ceiling-Cassette System Engineering Manual
'XHWRRXUSROLF\RIFRQWLQXRXVSURGXFWLQQRYDWLRQVRPHVSHFL¿FDWLRQVPD\FKDQJHZLWKRXWQRWL¿FDWLRQ
©
/*(OHFWURQLFV86$,QF(QJOHZRRG&OLIIV1-$OOULJKWVUHVHUYHG³/*´LVDUHJLVWHUHGWUDGHPDUNRI/*&RUS
MECHANICAL SPECIFICATIONS
General
System
LG single zone four-way ceiling cassette system comprises of a
single frame outdoor unit connected to a single indoor unit with a
single refrigerant circuit. An LG single zone four-way ceiling cassette
is a system that can operate in either cooling or heating mode.
The system is capable of changing mode within a maximum time
of three (3) minutes to ensure indoor temperature can be properly
maintained. LG components are manufactured in a facility registered
to ISO 9001 and ISO 14001, which is a set of standards applying
to environmental protection set by the International organization
for Standardization (ISO). The system components comply with
CSA Standard for Safety and bear the CSA label. Wiring in these
units are in accordance with the national Electrical Code (NEC).
LG single zone four-way ceiling cassette systems have published
performance ratings certified by AHRI (Air-Conditioning, Heating,
and Refrigeration Institute) and are listed in the AHRI Standard 210 /
240 certified product directory.
Outdoor Unit
The outdoor units have sound levels not exceeding 54 dB(A) tested
in an anechoic chamber under ISO Standard 3745.
Indoor Unit
The indoor units have sound ratings no higher than 47 dB(A) as
tested per ISO Standard 3745.
Temperature Ranges
9,000 and 12,000 Btu/h Ceiling Cassette Operating Ranges
• Operating ranges for outdoor units of 0°F to +118°F (DB) for cool-
ing (Cooling range can be extended from 0°F down to -4°F using
the Low Ambient Wind Baffle Kit [sold separately]); -4°F to +64°F
(WB) for heating.
• Operating ranges for indoor units of 57°F to 77°F (WB) for cooling;
59°F to 81°F (DB) for heating.
• Indoor unit temperature setting range of 65°F to 86°F (DB) for
cooling; 61°F to 86°F (WB) for heating.
18,000, 24,000, 36,000, and 42,000 Btu/h Ceiling Cassette
Operating Ranges
• Operating ranges for outdoor units of 5°F to +118°F (DB) for cool-
ing (Cooling range can be extended from 5°F down to -4°F using
the Low Ambient Wind Baffle Kit [sold separately]); -4°F to +64°F
(WB) for heating.
• Operating ranges for indoor units of 57°F to 77°F (WB) for cooling;
59°F to 81°F (DB) for heating.
• Indoor unit temperature setting range of 65°F to 86°F (DB) for
cooling; 61°F to 86°F (WB) for heating.
Casing / Frame
Outdoor Unit
The outdoor condensing unit case is constructed from pre-coated
metal (PCM) that has been tested in accordance with ASTM B-117
salt spray procedure for a
minimum of 1,000 hours.
Case has a removable panel
to allow access to major
internal components, and
legs to secure the unit during
installation.
Indoor Unit
The indoor unit case is
constructed of a galvanized
steel plate designed to recess
in the ceiling, and has a
surface mounted concentric
grille on the bottom of the
unit. Unit has four supply air
outlets and one return air
inlet. The supply air outlet
has four-directional slot
diffusers, each equipped
with an independent oscillating motorized guide vane to change
airflow direction. A guide vane algorithm sequentially changes the
predominant discharge airflow direction in counterclockwise pattern,
or can be used to lock each guide vane independently in a field-
adjusted fixed position. The four vanes can be individually adjusted
from the wired remote controller to customize the airflow pattern
for the conditioned space. A setting in the cooling and heating
modes can cycle the vanes up and down for uniform / random air
distribution.
A required architectural grille is sold as a separate required
accessory. The four-way grille is off-white acrylonitrile butadiene
styrene (ABS) polymeric resin with a tapered trim edge.
Refrigerant System
The system is designed for use with R410A refrigerant, and consists
of a single refrigeration circuit. The refrigeration circuit is pressure-
tested at the factory and shipped with a holding charge of helium
gas. The outdoor unit is provided with factory installed components,
including a refrigerant strainer, accumulator, four-way reversing
valve, electronic expansion valve (EEV), high and low side charging
ports, service valves, and interconnecting piping. All refrigerant lines
from the outdoor unit to the indoor unit are field-installed and must
be insulated separately.
Compressors
The 9,000 ~ 24,000 Btu/h outdoor units are equipped with one
hermetically sealed, digitally controlled, inverter-driven twin rotary
compressor to modulate capacity (modulation in 1 Hz increments).
The 36,000 and 42,000 Btu/h outdoor units are equipped with
one hermetically sealed, digitally controlled, inverter-driven scroll
compressor to modulate capacity (modulation in 1 Hz increments).
Teflon coated bearings, overcurrent protection and vibration isolation
are integrated with the compressor.
Figure 3: Four-Way Ceiling Cassette
System (LC098HV4 and LC128HV4
Models).
To Next Page
Loading...
