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Multi Air Conditioner SVC MANUAL(Exploded View) MODEL : A3UW24GFA0 [LMU24CHV] 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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Page 1: Multi Air Conditioner SVC MANUAL(Exploded View)s3.supplyhouse.com/product_files/LG-LMU24CHV... · Multi Air Conditioner SVC MANUAL(Exploded View) ... ambient conditions during opration

Multi Air ConditionerSVC MANUAL(Exploded View)MODEL : A3UW24GFA0 [LMU24CHV]

CAUTIONBefore Servicing the unit, read the safety precautions in General SVC manual.Only for authorized service personnel.

Internal Use Only

http://biz.lgservice.com

Page 2: Multi Air Conditioner SVC MANUAL(Exploded View)s3.supplyhouse.com/product_files/LG-LMU24CHV... · Multi Air Conditioner SVC MANUAL(Exploded View) ... ambient conditions during opration

- 2 -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) WBOutdoor 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) WBOutdoor 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 nationalcode.

3. Due to our policy of innovation some specifications may be changedwithout notification.

4. Sound Level Values are measured at Anechoic chamber. Therefore, these values can be increased(maximum 3dB(A)) owing toambient conditions during opration.

*: This temperature(-20 ~ -10℃) can be operated only when LowAmbient Kit is installed.

Outdoor unit A3UW24GFA0[LMU24CHV]

Testing Combination AMNW09GDBL1 * 2EA + AMNW07GDBL1 * 1EA

CapacityCooling

Min.~Rated~Max. kW 5.86Min.~Rated~Max. Btu/h 20,000

HeatingMin.~Rated~Max. kW 7.0 Min.~Rated~Max. Btu/h 24,000

Power InputCooling Min.~Rated~Max. kW 1.48Heating Min.~Rated~Max. kW 1.8

EER Btu/Wh 13.5SEER / HSPF - 21.7/10.6Power Supply V , Ø , Hz 208/230, 1, 60

Running CurrentCooling Min.~Rated~Max. A 6.7Heating Min.~Rated~Max. A 8.1

Starting CurrentCooling Max. A -Heating Max. A -

Wiring ConnectionsPower Supply Cable (included Earth) No. x mm2 (AWG) 3C x 2.5 (12)Power and CommunicationCable (included Earth)

Outdoor ~ BD unit No. x mm2 (AWG) -

CombinationSum of Indoor Units Capacity kBtu/h 33Number of Indoor Units EA 3Number of BD Units EA -

Casing Color - Warm Gray

DimensionsW x H x D mm 870 × 655 × 320W 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 RotaryModel Model x No. GKT176MA x 1Motor type - BLDCMotor Output W x No. 1,500 (at 60Hz) x 1

Refrigerant

Type - R410APrecharged Amount g (oz) 1,800 (63.5)Chargeless-Pipe Length m (ft) 22.5 (73.8)Additional Charging Volume g/m (oz/ft) 20 (0.22)Control - Electronic Expansion Valve

Refrigerant OilType - FVC68DCharged 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

FanType - PropellerAir Flow Rate m3/min x No. 50 x 1

Fan MotorType BLDCOutput W x No. 85.4 x 1

Sound Pressure LevelCooling Rated dB(A) 50Heating Rated dB(A) 53

Sound Power Level Cooling Rated dB(A) 62

Piping ConnectionsLiquid Outer Dia. mm(inch) x No. Ø 6.35 (1/4) x 3Gas Outer Dia. mm(inch) x No. Ø 9.52 (3/8) x 3

Piping Length

Total Piping Max. m (ft) 75(246.0)Main Piping Max. m (ft) -Total Branch Piping Max. m (ft) -Each Branch Piping Max. m (ft) 25 (82.0)

Maximum Height DifferenceOutdoor 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)

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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 separatepackage.

2.2 List of Accessory

- 3 -Copyright ©2014 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

2.1 List of Functions

DeviceA3UW24GFA0[LMU24CHV]

Central Controller

Simple Controller XFunction controller XFunction Scheduler XAC Ez PQCSZ250S0AC Smart ll PQCSW320A1EOption Kit (SD card type) PQCSE341A0 / PQCSE342A0ACP(Advanced Control Platform) PQCPA11A0E / PQCPB11A0EAC Manager XPI485 PMNFP14A0 / PMNFP14A1DO(Digital Output) Kit PQNFP00T0

BNU (Building Network Unit)

LONWORKS Gateway PQNFB16A1BACnet Gateway PQNFB17B0

InstallationY branch X X XHeader branch XAir Guide X

ODU Dry Contact XLow Ambient Kit O (Logical operation)

FunctionA3UW24GFA0 [LMU24CHV]

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

Page 4: Multi Air Conditioner SVC MANUAL(Exploded View)s3.supplyhouse.com/product_files/LG-LMU24CHV... · Multi Air Conditioner SVC MANUAL(Exploded View) ... ambient conditions during opration

- 4 -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

Ø6.35Flare Connection

Ø9.52Flare Connection

Condensing Temperature Thermistor

ROOM A

ROOM A

ROOM B

Field Piping Liquid(Ø6.35)

Field Piping Gas(Ø9.52)

: Cooling : Heating

ROOM B

ROOM C

Main SVC V/V

ROOM C

Main SVC V/V

Pressure Sensor

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- 5 -Copyright ©2014 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

4. Wiring Diagrams

Page 6: Multi Air Conditioner SVC MANUAL(Exploded View)s3.supplyhouse.com/product_files/LG-LMU24CHV... · Multi Air Conditioner SVC MANUAL(Exploded View) ... ambient conditions during opration

- 6 -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

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

CN-4WAYCN-HEATER2

Page 7: Multi Air Conditioner SVC MANUAL(Exploded View)s3.supplyhouse.com/product_files/LG-LMU24CHV... · Multi Air Conditioner SVC MANUAL(Exploded View) ... ambient conditions during opration

- 7 -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

552112

447910

137213B

435511

268711A

268711M

268711D

649950

263230E

263230A

263230B

263230C

263230D

165010

552203A

552203B

W49810

552200

661400C

661400B

661400A

152503

261704

552114

552113

W4986A

W4986B

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

Page 8: Multi Air Conditioner SVC MANUAL(Exploded View)s3.supplyhouse.com/product_files/LG-LMU24CHV... · Multi Air Conditioner SVC MANUAL(Exploded View) ... ambient conditions during opration

P/NO : MFL68280002 January, 2014