PRODUCT DATA
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HEAT PUMP CONDENSING UNIT ENGINEERING MANUAL
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.
GENERAL DATA
Outdoor Units
Refer to "Pipe Design Parameters" on page 62
and "Piping Design Guide" on page 66 for cor-
rect line sizing. Designer must verify refrigerant
piping design confi guration using LATS Multi V
software.
The factory’s refrigerant charge is suffi cient when
line set length does not exceed 25 ft.
Estimated charge per linear foot. Actual
refrigerant charge varies and can be calculated
using LG’s LATS computerized refrigerant piping
software or manually using the worksheet on
page 80. System must be charged using a
refrigerant charging scale. Superheat method
will not work.
Table 1b: General Data—Outdoor Units (continued from Table 1a)
3.0 Ton
ARUN036GS2
4.0 Ton
ARUN047GS2
4.4 Ton
ARUN053GS2
Heat Exchanger
Material Copper Tube / Aluminum Fin Copper Tube / Aluminum Fin Copper Tube / Aluminum Fin
Fin Coating GoldFin™ / Hydrophilic GoldFin™ / Hydrophilic Gold Fin™ / Hydrophilic
Face Area (ft
2
) 630.7 630.7 630.7
Rows / Fins per inch 2 / 17 2 / 17 2 / 17
Piping
Liquid Line Connection (in, OD) 3/8 Braze 3/8 Braze 3/8 Braze
Vapor Line Connection (in, OD) 5/8 Braze 5/8 Braze 3/4 Braze
Factory Refrigerant Charge
Factory Charge—lbs of R410A 6.6 6.6 6.6
Acoustic Data
Table 2: Electrical Characteristics—Outdoor Unit 60 Cycle Compressor and Fan Motors
Nom.
Tons
Unit Model No.
Unit Operating
Voltage Range
MCA MOP
Compressor Motor Fan Motor(s)
No. Volts Phase
Amps
No. Volts Phase
Amps
RLA(ea.) FLA(ea.) kW
3.0 ARUN036GS2 187–253 29.0 50 1 208–230 1 21.5 2 208–230 1 1 0.35
4.0 ARUN047GS2 187–253 33.0 55 1 208–230 1 24.8 2 208–230 1 1 0.35
4.4 ARUN053GS2 187–253 34.0 60 1 208–230 1 25.9 2 208–230 1 1 0.35
MCA = Minimum Circuit Ampacity
Voltage tolerance is ±10%
Maximum allowable voltage unbalance is 2%
HACR type circuit breaker per NEC
MOP (Maximum Overcurrent Protection) is
calculated as follows:
(Largest motor FLA x 2.25) + (Sum of other motor
FLA) rounded down to the nearest standard fuse size
Sound pressure levels are tested in an anechoic
chamber under ISO Standard 1996.
Measurements are taken with no attenuation
and units operating at full load nominal operating
condition.
Measurements are taken 4.9 ft. above the
fi nished fl oor and a distance of 3.3 ft. from the
face of the fan discharge.
Sound Power Levels are measured in db(A) with
a tolerance of ± 3.
Off-Peak Operation: Logic takes advantage of
lower outdoor ambient temperatures and limits
the outdoor unit fan speed during off peak opera-
tion to lower the unit sound power level.
Actual sound levels depend on room conditions
and natural attenuation.
Table 3: Outdoor Unit Sound Pressure Level
Model
Cooling Operation dB(A) Heating Operation dB(A)
Peak Off-Peak Peak Off-Peak
ARUN036GS2 50 40–46 52 41–47
ARUN047GS2 51 41–47 53 42–48
ARUN053GS2 52 42–48 54 43–49
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