LG A2UW18GFA0 User manual

Multi Air Conditioner
SVC MANUAL(Exploded View)
MODEL : A2UW18GFA0
[LMU18CHV]
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
1. Specification
Note:
1. All data are based on the following conditions:
-
Cooling Temperature : Indoor 26.7°C(80°F) DB / 19.4°C(67°F) WB
Outdoor 35°C(95°F) DB / 23.9°C(75°F) WB
- Heating Temperature : Indoor 21.1°C(70°F) DB / 15.6°C(60°F) WB
Outdoor 8.3°C(47°F) DB / 6.1°C(43°F) WB
- Piping Length : Interconnected Pipe Length = 7.5m
- Difference Limit of Elevation (Outdoor ~ Indoor Unit) is Zero.
2. Wiring cable size must comply with the applicable local and national
code.
3. Due to our policy of innovation some specifications may be changed
without notification.
4. Sound Level Values are measured at Anechoic chamber.
Therefore, these values can be increased(maximum 3dB(A)) owing to
ambient conditions during opration.
*: This temperature(-20 ~ -10℃) can be operated only when Low
Ambient Kit is installed.
Outdoor unit A2UW18GFA0
[LMU18CHV]
Testing Combination AMNW09GDBL1 * 2EA
Capacity
Cooling Min.~Rated~Max. kW
5
Min.~Rated~Max. Btu/h 17,000
Heating Min.~Rated~Max. kW
6.5
Min.~Rated~Max. Btu/h 22,000
Power Input Cooling Min.~Rated~Max. kW
1.31
Heating Min.~Rated~Max. kW 2.04
EER Btu/Wh 13
SEER / HSPF - 22.0/9.7
Power Supply V , Ø , Hz 208/230, 1, 60
Running Current Cooling Min.~Rated~Max. A5.9
Heating Min.~Rated~Max. A9.2
Starting Current Cooling Max. A -
Heating Max. A -
Wiring Connections
Power Supply Cable (included Earth) No. x mm2(AWG) 3C x 2.5 (12)
Power and Communication
Cable (included Earth) Outdoor ~ BD unit No. x mm2(AWG) -
Combination
Sum of Indoor Units Capacity kBtu/h 24
Number of Indoor Units EA 2
Number of BD Units EA -
Casing Color -Warm Gray
Dimensions W x H x D mm 870 × 655 × 320
W x H x D inch 34-1/4 x 25-25/32 x 12-19/32
Net Weight kg (lbs) 45 (99.2)
Compressor
Type -Twin Rotary
Model Model x No. GKT176MA x 1
Motor type -BLDC
Motor Output W x No. 1,500 (at 60Hz) x 1
Refrigerant
Type -R410A
Precharged Amount g (oz) 1,800 (63.5)
Chargeless-Pipe Length m (ft) 15(49.2)
Additional Charging Volume g/m (oz/ft) 20 (0.22)
Control -Electronic Expansion Valve
Refrigerant Oil Type -FVC68D
Charged volume cc x No. 670 x 1
Heat Exchanger (Row x Column x Fins per inch) x No. -(2 x 28 x 14) x 1
Fan Type -Propeller
Air Flow Rate m3/min x No. 50 x 1
Fan Motor Type BLDC
Output W x No. 85.4 x 1
Sound Pressure Level Cooling Rated dB(A) 50
Heating Rated dB(A) 52
Sound Power Level Cooling Rated dB(A) 62
Piping Connections Liquid Outer Dia. mm(inch) x No. Ø 6.35 (1/4) x 2
Gas Outer Dia. mm(inch) x No. Ø 9.52 (3/8) x 2
Piping Length
Total Piping Max. m (ft) 50 (164.0)
Main Piping Max. m (ft) -
Total Branch Piping Max. m (ft) -
Each Branch Piping Max. m (ft) 25 (82.0)
Maximum Height Difference Outdoor Unit ~ Indoor Unit Max. m (ft) 15 (49.2)
Indoor Unit ~ Indoor Unit Max. m (ft) 7.5 (24.6)
Operation Range
(Outdoor Temperature)
Cooling Min. ~ Max. ℃ DB (℉ DB) -18(-0.4) *~ 48 (118.4)
Heating Min. ~ Max. ℃ WB (℉ WB) -20 (-4.0) ~ 18 (64.4)

2. List of Functions & Accessory
Note :
O : Applied, × : Not applied
* Option : Model name & price are different according to options, and assembled in factory with main unit.
Accessory model name : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate
package.
2.2 List of Accessory
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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
2.1 List of Functions
Device A2UW18GFA0
[LMU18CHV]
Central Controller
Simple Controller X
Function controller X
Function Scheduler X
AC Ez PQCSZ250S0
AC Smart ll PQCSW320A1E
Option Kit (SD card type) PQCSE341A0 / PQCSE342A0
ACP(Advanced Control Platform) PQCPA11A0E / PQCPB11A0E
AC Manager X
PI485 PMNFP14A0 / PMNFP14A1
DO(Digital Output) Kit PQNFP00T0
BNU
(Building Network Unit)
LONWORKS Gateway PQNFB16A1
BACnet Gateway PQNFB17B0
Installation
Y branch X X X
Header branch X
Air Guide X
ODU Dry Contact X
Low Ambient Kit O (Logical operation)
Function A2UW18GFA0
[LMU18CHV]
Reliability
Defrost / Deicing O
Phase Protection X
Restart Delay(3-minutes) O
Self Diagnosis O
Soft Start O
Test Function X
Convenience
Wiring Error Check O
Night Quiet Mode O
Mode Lock O
Peak Control O
Forced Operation O
CAC Network Function
Central Control(LGAP) O
PDI(Power Distribution Indicator) O
PI485 O

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
3. Piping Diagrams
M
Discharge
Temperature
Thermistor
Suction
Temperature
Thermistor
Inverter
Compressor
Electronic
Expansion
Valve
Condenser Out
Temperature
Thermistor
Inlet Air
Temperature
Thermistor
Outdoor Unit
Ø6.35
Flare Connection
Ø9.52
Flare Connection
Condensing
Temperature
Thermistor
ROOM A
ROOM A
ROOM B
Field Piping
Liquid(Ø6.35)
Field Piping
Gas(Ø9.52)
: Cooling
: Heating
ROOM B
Main SVC V/V
Main SVC V/V
Pressure
Sensor

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
4. Wiring Diagrams

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Main PCB
CN-COMM
CN-MONITOR
CN-U_V_W
P(L)_BR
P(N)_BL
CN-COIL1
CN-COIL2
WCN-GND2
CN-4WAY
CN-HEATER2
Sub PCB
Monitoring PCB
CN-MONITOR1
CN-DISCHARGE
CN-EEV A
CN-AIR
CN-SUCTION
CN-EEV B
CN-MID
CN-EEV C
CN-H/PRESS
CN-LGMV
CN-CENTRAL
CN-WRITE
DIP-SW
CN-MAIN
CN-FLASH 7_SEGMENT
TACT-SW1

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
5. Exploded View
W6640
435301
349480 237202
437211
559010
137213A
349600
546810
554160
W6631 550140
430410
554031
435512
435300
552114
552112
447910
137213B
W4986A
W4986B
435511
268711A
268711M
268711D
649950
263230E
263230A
263230B
263230C
263230D
165010
552203A
W49810
552203B
661400A
661400B
152503
261704
552113
Location No. Description Sensor Information Housing Color
263230A Thermisther1(CN-DISCHARGE) Discharge Pipe Black
263230B Thermisther2(CN-SUCTION) Suction Pipe Green
263230C Thermisther3(CN-C/PIPE) Cond Out Pipe Violet
263230D Thermisther4(CN-MID) Cond Middle Pipe Brown
263230E Thermisther5CN-Air) Air Yellow
165010 CN-H/PRESS Pressure sensor Red

P/NO : MFL68280001 JANUARY, 2014