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Model No.
Cooling Mode Performance
Capacity (Btu/h)
Power Input
(W)
1
Heating Mode Performance
Capacity (Btu/h)
Power Input
(W)
1
Entering Mixed Air
Cooling Max. (°F WB)
Heating Min. (°F DB)
Unit Data
Refrigerant Type
2
Refrigerant Control
Net Unit Weight (lbs.)
Shipping Weight (lbs.)
Communication Cable
(No. x AWG)
4
Fan
Type
Motor
Housing
Motor/Drive
Airflow Rate H/M/L (CFM)
Standard Mode
Airflow Rate H/M/L (CFM)
High Mode (Factory Set)
External Static Pressure (in. wg)
Standard Mode
External Static Pressure (in. wg)
High Mode (Factory Set)
Piping
Liquid Line (in., O.D.)
Vapor Line (in., O.D.)
Condensate Line (in., I.D.)
Power Input is rated at high speed.
1
Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
2
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
All communication cable to be minimum 18 AWG, 2-conductor, stranded, shielded and
3
must comply with applicable local and national codes. Ensure the communication cable
is properly grounded at the master outdoor unit only. Do not ground the ODU−IDU com-
munications cable at any other point.
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes. Power Supply (V/Hz/Ø): 208-230/60/1
Table 5: High-Static B8 Chassis IDU Specifications
ARNU363B8A4
ARNU423B8A4
36,200
42,000
800
40,600
43,800
800
76
59
R410A
R410A
EEV
192
222
2 x 18
2 x 18
Sirocco
Sirocco
2
2
1,896 / 1,748 / 1,550 1,963 / 1,786 / 1,589 2,048 / 1,846 / 1,670 2,050 / 1,766 / 1,766 2,684 / 2,260 / 2,260
1,730 / 1,317 / 1,066 1,914 / 1,458 / 1,123 2,019 / 1,518 / 1,200 2,260 / 1,766 / 1,766 2,542 / 2,260 / 2,260
0.35
0.70
3/8 Flare
3/8 Flare
3/4 Brazed
3/4 Brazed
1
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.
ARNU483B8A4
48,100
800
800
51,200
800
800
76
76
59
59
R410A
EEV
EEV
192
192
222
222
2 x 18
Sirocco
2
2
2
2
Brushless Digitally Controlled / Direct
0.35
0.35
0.70
0.70
3/8 Flare
3/4 Brazed
1
1
This unit comes with a dry nitrogen charge.
This data is rated 0 ft above sea level, with 25 ft of refrigerant line per indoor unit and a 0 ft
level difference between outdoor and indoor units. All capacities are net with a combina-
tion ratio between 95-105%.
Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and
67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB).
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and
outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
ARNU763B8A4
ARNU963B8A4
76,400
95,900
800
800
86,000
107,500
800
800
76
76
59
59
R410A
R410A
EEV
EEV
192
192
222
222
2 x 18
2 x 18
Sirocco
Sirocco
2
2
2
2
0.59
0.59
0.87
0.87
3/8 Flare
3/8 Flare
3/4 Flare
7/8 Flare
1
1
17
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