LG ARNU18GS5 2 Series, ARNU24GS5 2 Series User manual

LCS (Light Commercial System) Indoor unit
LCS (Light Commercial System) Indoor unit
Wall Mounted
1. List of functions
2. Specifications
3. Dimensions
4. Piping Diagrams
5. Wiring Diagrams
6. Capacity Tables
7. Air Velocity and Temperature Distribution
8. Electric Characteristics
9. Sound Levels
10. Installation
11. Accessories

Indoor Units
1_ Wall Mounted
LCS (Light Commercial System) Indoor unit
1. List of functions
Air supply outlet
Airflow direction control(left & right)
Airflow direction control(up & down)
Auto swing(left & right)
Air flow Auto swing(up & down)
Airflow steps(fan/cool/heat)
Chaos swing
Chaos wind(auto wind)
Jet cool(Power wind)
Swirl wind
Deodorizing filter
Air purifying Plasma air purifier
Prefilter(washable / anti-fungus)
Drain pump
Installation E.S.P. control
Electric heater(operation)
High ceiling operation
Hot start
Reliability Self diagnosis
Soft dry operation
Auto changeover
Auto cleaning
Auto operation(artificial intelligence)
Auto restart operation
Child lock
Convenience Forced operation
Group control
Sleep mode
Timer(on/off)
Timer(weekly)
Two thermistor control
Wide wired remote controller
Deluxe wired remote controller
Individual Simple wired remote controller
control Wired remote controller(for hotel use)
Wireless remote controller(simple)
Wireless LCD remote control
Special Zone control
function kit CTIE
Electro thermostat
1
Auto
Auto
Auto
X
3 / 4 / 3
O
O
O
-
X
Option
O
-
-
-
-
O
O
O
O(Heat recovery)
O
O(Heat pump or Cooling only)
O
O
O
O
O
O
O
O
Accessory
Accessory
Accessory
Accessory
Accessory
Accessory
-
-
-
FunctionCategory
ARNU18GS5*2, ARNU24GS5*2
O : Applied X : Not applied – : No relation
Option : Model name & price are different according to options, and assembled in factory with main unit.
Accessory : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate
package.

Wall Mounted _ 2
Indoor Units
LCS (Light Commercial System) Indoor unit
2. Specifications
Notes:-
1. Capacities are based on the following conditions:
Cooling • Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB
• Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB
• Interconnecting Piping Length 7.5m
• Level Difference of Zero
Heating • Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB
• Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB
• Interconnecting Piping Length 7.5m
• Level Difference of Zero
2. Capacities are net capacities
3. Due to our policy of innovation some specifications may be changed without prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve
6. Anechoic chamber conversion value is measured at 1 m downward from unit centre.
The values depends on the ambient conditions and values are normally higher in actual operation.
Type
Model Unit
kW
Cooling Capacity kcal/h
Btu/h
kW
Heating Capacity kcal/h
Btu/h
Dimensions(WxDxH)
Body mm
inch
Coil
Rows x Columns x FPI
Face Area m3
Type
Motor Output x Number W
Running Current A
Fan Air Flow Rate(H / M / L) CMM
cfm
Drive
Motor type
Temperature Control
Sound Absorbing Thermal Insulation Material
Air Filter
Safety Device
Liquid Side mm(inch)
Pipe Connections Gas Side mm(inch)
Drain Pipe(Internal Dia.) mm(inch)
Net Weight kg(lbs)
Noise Level (Sound Press, 1m, H / M / L) dB(A)
Power Supply Ø, V, Hz
Refrigerant Control
Power cable mm2
Transmission cable mm2
Color
Wall Mounted
ARNU18GS5*2 ARNU24GS5*2
5.6 7.1
4,800 6,100
19,100 24,200
6.3 8.0
5,400 6,900
21,500 27,300
1,090 x 178 x 300 1,090 x 178 x 300
42.9 x 7 x 11.8 42.9 x 7 x 11.8
2 x 15 x 20 2 x 15 x 20
0.26 0.26
Cross Flow Fan Cross Flow Fan
20 20
0.2 0.2
12.0 / 10.5 / 9.0 14.0 / 13.0 / 10.0
424.0 / 371.0 / 318.0 494.0 / 459.0 / 353.0
Direct Direct
BLDC BLDC
Microprocessor, Thermostat for cooling and heating Microprocessor, Thermostat for cooling and heating
Foamed polystrene Foamed polystrene
Resin Net(washable) Resin Net(washable)
Fuse Fuse
Ø6.35(1/4) Ø9.52(3/8)
Ø12.7(1/2) Ø15.88(5/8)
16(5/8) 16(5/8)
12(26.5) 12(26.5)
44 / 40 / 36 46 / 41 / 38
1, 220-240, 50 1, 220-240, 50
1, 220, 60 1, 220, 60
EEV EEV
CV1.5 x 3C CV1.5 x 3C
CVV-SB 1.0~1.5 x 2C CVV-SB 1.0~1.5 x 2C
Morning fog Morning fog
* Model Name
A:Basic L:Plasma
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
l/s = CMM x 1000/60

Indoor Units
3_ Wall Mounted
LCS (Light Commercial System) Indoor unit
3. Dimensions
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea CHASSIS CODE: S5
Wall Mounted
ARNU18GS5*2 ARNU24GS5*2
WModel
ARNU18GS5*2 ARNU24GS5*2
HD
1090 300 178
Note
1. Unit should be installed in compliance with the installation manual in the product box. 2. Unit shall be grounded in accordance with the local regulations or applicable national codes.
(unit : mm)
1,090
178
300
281
804
Name
1
Air discharge grill
2
Air suction grill
Number Descripition
(unit : mm)
1
2

Wall Mounted _ 4
Indoor Units
LCS (Light Commercial System) Indoor unit
4. Piping Diagrams
Heat Exchanger
C.F.F
lndoor unit
EEV :Heating
:Cooling
Filter
Filter
Th3 Th2
Th1
Refrigerant pipe connection port diameter
MODEL GAS LIQUID
ARNU18GS5*2 Ø12.7(1/2) Ø6.35(1/4)
ARNU24GS5*2 Ø15.88(5/8) Ø9.52(3/8)
[Unit: mm(inch)]
LOC. Description
Th1 Room thermistor
Th2 Pipe in thermistor
Th3 Pipe out thermistor

Indoor Units
5_ Wall Mounted
LCS (Light Commercial System) Indoor unit
5. Wiring Diagrams
CONNECTOR NUMBER LOCATION POINT FUNCTION
CN-POWER AC Power supply AC Power line input for indoor controller
CN-MOTOR1 Fan motor output Motor output of BLDC
CN-COM Communication Connection between indoor and outdoor
CN-DISP1 Display Display of indoor status
CN-DISP2 Display Display of indoor status
CN-EEV EEV output EEV control output
CN-U/D, CN-L/R Step motor Step motor output
CN-TH1 Room/pipe sensor Room and pipe thermistor
CN-REMO Remote controller Remote control line
CN-CC Dry contact Dry contact line
CN-HVB Air clean Air clean control
S5 Chassis

Wall Mounted _ 6
Indoor Units
LCS (Light Commercial System) Indoor unit
6. Capacity Tables
Capacity
Index
Outdoor
air temp.
(DB, °C)
Indoor air temp. (DB/WB, °C)
20 23 26 27 28 30 32
14 16 18 19 20 22 24
TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC
kW kW kW kW kW kW kW kW kW kW kW kW kW kW
7.1
10 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.7 4.3 7.4 4.3
12 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.7 4.3 7.3 4.2
14 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.7 4.3 7.2 4.2
16 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.7 4.3 7.1 4.1
18 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.7 4.3 7.0 4.1
20 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.7 4.3 6.9 4.0
21 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.7 4.3 6.8 4.0
23 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.7 4.3 6.7 3.9
25 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.6 4.3 6.6 3.9
27 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.4 4.2 6.6 3.8
29 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.4 4.1 6.5 3.8
31 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.3 4.1 6.4 3.7
33 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.2 4.0 6.3 3.7
35 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 6.0 4.2 6.0 3.9 6.2 3.6
37 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 5.8 4.1 5.9 3.8 6.1 3.6
39 3.8 3.3 4.5 3.7 5.2 4.0 5.6 4.0 5.7 4.0 5.8 3.8 6.0 3.5
10 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.5 5.5 9.3 5.4
12 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.5 5.5 9.2 5.4
14 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.5 5.5 9.1 5.3
16 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.5 5.5 9.0 5.2
18 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.5 5.5 8.8 5.2
20 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.5 5.5 8.7 5.1
21 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.5 5.5 8.7 5.1
23 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.5 5.5 8.5 5.0
25 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.4 5.4 8.4 4.9
27 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.2 5.3 8.3 4.9
29 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.1 5.2 8.2 4.8
31 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 8.0 5.1 8.1 4.7
33 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 7.8 5.1 7.9 4.6
35 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.6 5.3 7.7 5.0 7.8 4.6
37 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.4 5.1 7.5 4.9 7.7 4.5
39 4.8 4.2 5.7 4.6 6.6 5.0 7.1 5.1 7.2 5.0 7.4 4.8 7.6 4.4
5.6
Notes:
TC: Total Capacity(kW) SHC: Sensible Heat Capacity(kW)
6.1 Cooling Capacity Cooling Capacity

Indoor Units
7_ Wall Mounted
LCS (Light Commercial System) Indoor unit
6. Capacity Tables
6.2 Heating Capacity Heating Capacity
Notes: TC: Total Capacity(kW)
Capacity
Index
Outdoor air
temp.
DB(°C) WB(°C)
Indoor air temp. (DB, °C)
16 18 20 21 22 24
TC TC TC TC TC TC
kW kW kW kW kW kW
-19.8 -20.0 4.2 4.2 4.2 4.2 4.2 4.2
-18.8 -19.0 4.3 4.3 4.3 4.3 4.3 4.3
-16.7 -17.0 4.6 4.6 4.6 4.6 4.6 4.5
-14.7 -15.0 4.9 4.8 4.3 4.8 4.8 4.8
-12.6 -13.0 5.1 5.1 4.5 5.0 5.0 5.0
-10.5 -11.0 5.4 5.4 4.8 5.4 5.3 5.3
-9.5 -10.0 5.4 5.4 4.9 5.4 5.4 5.4
-8.5 -9.1 5.5 5.5 5.0 5.5 5.5 5.4
-7.0 -7.6 5.7 5.7 5.1 5.6 5.6 5.5
-5.0 -5.6 6.0 6.0 5.4 5.8 5.8 5.5
-3.0 -3.7 6.2 6.2 5.5 6.1 5.9 5.5
0.0 -0.7 6.6 6.6 5.8 6.1 5.9 5.5
3.0 2.2 7.0 6.7 6.2 6.1 5.9 5.5
5.0 4.1 7.1 6.7 6.3 6.1 5.9 5.5
7.0 6.0 7.2 6.7 6.3 6.1 5.9 5.5
9.0 7.9 7.2 6.7 6.3 6.1 5.9 5.5
11.0 9.8 7.2 6.7 6.3 6.1 5.9 5.5
13.0 11.8 7.2 6.7 6.3 6.1 5.9 5.5
15.0 13.7 7.2 6.7 6.3 6.1 5.9 5.5
-19.8 -20.0 5.4 5.4 5.4 5.3 5.3 5.3
-18.8 -19.0 5.5 5.5 5.5 5.5 5.4 5.4
-16.7 -17.0 5.8 5.8 5.8 5.8 5.8 5.8
-14.7 -15.0 6.2 6.1 5.5 6.1 6.1 6.1
-12.6 -13.0 6.5 6.5 5.8 6.4 6.4 6.4
-10.5 -11.0 6.8 6.8 6.0 6.8 6.7 6.7
-9.5 -10.0 6.9 6.9 6.2 6.9 6.9 6.8
-8.5 -9.1 7.0 7.0 6.3 7.0 7.0 6.8
-7.0 -7.6 7.3 7.3 6.5 7.1 7.1 7.0
-5.0 -5.6 7.6 7.6 6.8 7.4 7.4 7.0
-3.0 -3.7 7.9 7.9 7.0 7.7 7.5 7.0
0.0 -0.7 8.4 8.4 7.4 7.8 7.5 7.0
3.0 2.2 8.9 8.6 7.8 7.8 7.5 7.0
5.0 4.1 9.0 8.6 8.0 7.8 7.5 7.0
7.0 6.0 9.2 8.6 8.0 7.8 7.5 7.0
9.0 7.9 9.2 8.6 8.0 7.8 7.5 7.0
11.0 9.8 9.2 8.6 8.0 7.8 7.5 7.0
13.0 11.8 9.2 8.6 8.0 7.8 7.5 7.0
15.0 13.7 9.2 8.6 8.0 7.8 7.5 7.0
5.6
7.1

Wall Mounted _ 8
Indoor Units
LCS (Light Commercial System) Indoor unit
7. Air Velocity and Temperature Distribution(Reference Data)
ARNU18GS5*2
18
20
22
24
1.00.5
2.5
1.5
Air velocity [m/s]
Temperature [°C]
2.7m
2m
1m
0m
8m 7m 6m 5m 4m 3m 2m 1m 0m
2.7m
2m
1m
0m
8m 7m 6m 5m 4m 3m 2m 1m 0m
1.0 2.0
1.5
0.5
Air velocity [m/s]
Temperature [°C]
2.7m
2m
1m
0m
8m 7m 6m 5m 4m 3m 2m 1m 0m
2.7m
2m
1m
0m
8m 7m 6m 5m 4m 3m 2m 1m 0m
33
30
27
24
21
Cooling
Discharge angle:45°
Heating
Discharge angle:50°

Indoor Units
9_ Wall Mounted
LCS (Light Commercial System) Indoor unit
8. Electric Characteristics
Symbols:
MCA :Min, Circuit Amps(A)
MFA:Max. Fuse Amps(see note 5)
kW:Fan Motor Rated Output(kW)
FLA:Full Load Amps(A)
IFM:Indoor Fan Motor
Note :
1. Voltage range
Units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above
the listed range limits.
2. Maximum allowable voltage unbalance between phases is 2%
3. MCA/MFA
MCA=1.25 x FLA
MFA≤ 4 x FLA
(Next lower standard fuse rating. Min. 15A)
4. Select wire size based on the MCA
5. Instead of fuse, use Circuit Breaker.
Units
Model Type Hz Volts
Voltage Range
ARNU18GS5*2 S5 50 220 - 240 Max:264 0.29 15 0.02 0.23 40 40
ARNU24GS5*2 S5 Min:198 0.29 15 0.02 0.23 40 40
ARNU18GS5*2 S5 60 220 Max:242 0.29 15 0.02 0.23 40 40
ARNU24GS5*2 S5 Min:198 0.29 15 0.02 0.23 40 40
Power Supply IFM Input(W)
MCA MFA kW FLA Cooling Heating