LG URNU76GB8A2 User manual

Multi V Air Conditioner
SVC MANUAL(Exploded View)
MODEL : URNU76GB8A2
URNU96GB8A2
Internal Use Only
http://biz.lgservice.com
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
URNU763B8A2
URNU963B8A2

2Multi V Air Conditioner
1. Specification
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°C) DB/19°C(66.2°C) WB
- Outdoor Temperature 35°C(95°C) DB/24°C(75.2°C) WB
Heating: - Indoor Temperature 20°C(68°C) DB/15°C(59°C) WB
- Outdoor Temperature 7°C(44.6°C) DB/6°C(42.8°C) WB
Piping Length - Interconnecting Piping Length 7.5m
- Level Difference of Zero
2. Wiring cable size must comply with the applicable local and national code.
3. The specification may be subject to change without prior notice for purpose of improvement.
Indoor Unit Type
Model
Decorative Panel Model
zH/V/ØylppuSrewoP
WkyticapaCgnilooC
Btu/h
WkyticapaCgnitaeH
Btu/h
Current Nominal Running Current A
Fan Motor Type
Fan Type
Motor Output(W) x No. of Unit
Air Flow Rate CMM
mfc)L/M/H(
External Static Pressure mmAq
Capacitor µF / Vac
Drive
Coil Row x Column x FPI
)hcni(mmydoBsnoisnemiD
(W x H x D) Decorative Panel mm(inch)
)sbl(gkydoBthgieWteN
Decorative Panel kg (lbs)
Air Filter
3+)A(Bd)L/M/H(leveLdnuoS
)hcni(mmdiuqiLgnipiP
)hcni(mmsaGsnoitcennoC
Drain(OD/ID) mm
h/letaRnoitacifidimuheD
Safety Devices
Temperature Sensor
Referigerant
Referigerant Control
Connectable Outdoor Unit
Power and Transmission Interunit Cable No. x mm2
Ceiling Concealed Duct(High Static)
URNU76GB8A2 URNU96GB8A2
--
1/220~240/50, 60 1/220~240/50, 60
824.22
009,59004,67
5.132.52
005,701000,68
21.521.5
CDLBCDLB
occoriSoccoriS
2*5732*573
46/46/6705/05/46
2260/1765/1765 2683/2259/2259
2222
--
tceriDtceriD
91x02x391x02x3
1562*460*688 1562*460*688
--
)291(78)291(78
--
--
05/05/2584/84/05
)8/3(25.9)8/3(25.9
)8/7(2.22)4/3(50.91
21/17, (32/25) 21/17, (32/25)
--
ESUFESUF
rotsimrehTrotsimrehT
A014RA014R
VEEVEE
VitluMVitluM
CV2.0*3C/CVV-SB1.25*2C CV2.0*3C/CVV-SB1.25*2C
Conversion Formula
kW = Btu/h x 0.0002931
cfm = CMM x 35.3

2Multi V Air Conditioner
1. Specification
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°C) DB/19°C(66.2°C) WB
- Outdoor Temperature 35°C(95°C) DB/24°C(75.2°C) WB
Heating: - Indoor Temperature 20°C(68°C) DB/15°C(59°C) WB
- Outdoor Temperature 7°C(44.6°C) DB/6°C(42.8°C) WB
Piping Length - Interconnecting Piping Length 7.5m
- Level Difference of Zero
2. Wiring cable size must comply with the applicable local and national code.
3. The specification may be subject to change without prior notice for purpose of improvement.
Indoor Unit Type
Model
Decorative Panel Model
zH/V/ØylppuSrewoP
WkyticapaCgnilooC
Btu/h
WkyticapaCgnitaeH
Btu/h
Current Nominal Running Current A
Fan Motor Type
Fan Type
Motor Output(W) x No. of Unit
Air Flow Rate CMM
mfc)L/M/H(
External Static Pressure mmAq
Capacitor µF / Vac
Drive
Coil Row x Column x FPI
)hcni(mmydoBsnoisnemiD
(W x H x D) Decorative Panel mm(inch)
)sbl(gkydoBthgieWteN
Decorative Panel kg (lbs)
Air Filter
3+)A(Bd)L/M/H(leveLdnuoS
)hcni(mmdiuqiLgnipiP
)hcni(mmsaGsnoitcennoC
Drain(OD/ID) mm
h/letaRnoitacifidimuheD
Safety Devices
Temperature Sensor
Referigerant
Referigerant Control
Connectable Outdoor Unit
Power and Transmission Interunit Cable No. x mm2
Ceiling Concealed Duct(High Static)
URNU763B8A2 URNU963B8A2
--
1/220~240/50, 60 1/220~240/50, 60
824.22
009,59004,67
5.132.52
005,701000,68
21.521.5
CDLBCDLB
occoriSoccoriS
2*5732*573
46/46/6705/05/46
2260/1765/1765 2683/2259/2259
2222
--
tceriDtceriD
91x02x391x02x3
1562*460*688 1562*460*688
--
)291(78)291(78
--
--
05/05/2584/84/05
)8/3(25.9)8/3(25.9
)8/7(2.22)4/3(50.91
21/17, (32/25) 21/17, (32/25)
--
ESUFESUF
rotsimrehTrotsimrehT
A014RA014R
VEEVEE
VitluMVitluM
CV2.0*3C/CVV-SB1.25*2C CV2.0*3C/CVV-SB1.25*2C
Conversion Formula
kW = Btu/h x 0.0002931
cfm = CMM x 35.3

Service Manual 3
2. List of Functions
1teltuoylppusriAwolfriA
-)thgir&tfel(lortnocnoitceridwolfriA
-)nwod&pu(lortnocnoitceridwolfriA
-)thgir&tfel(gniwsotuA
-)nwod&pu(gniwsotuA
3/3/3)taeh/looc/naf(spetswolfriA
-gniwssoahC
-)dniwotua(dniwsoahC
-)dniwrewoP(loocteJ
-dniwlriwS
XretlifgnizirodoeDgniyfirupriA
XreifirupriaamsalP
O)sugnuf-itna/elbahsaw(retliferP
OpmupniarDnoitallatsnI
)rellortnocetomerderiwylno(Olortnoc.P.S.E
X)noitarepo(retaehcirtcelE
-noitarepogniliechgiH
OtratstoHytilibaileR
OsisongaidfleS
OnoitarepoyrdtfoS
XrevoegnahcotuAecneinevnoC
XgninaelcotuA
)pmuptaehylno(O)ecnegilletnilaicifitra(noitarepootuA
OnoitarepotratserotuA
)rellortnocetomerderiwylno(OkcoldlihC
-noitarepodecroF
)rellortnocetomerderiwylno(OlortnocpuorG
XedompeelS
O)ffo/no(remiT
)rellortnocetomerderiwylno(O)ylkeew(remiT
)rellortnocetomerderiwylno(OlortnocrotsimrehtowT
0ZSUCRDPrellortnocetomerderiwdradnatSlortnoclaudividnI
0SDUCRQPrellortnocetomerderiwexuleD
0ACUCRQPrellortnocetomerderiwelpmiS
0SCFCRQP)esuletohrof(rellortnocetomerderiW
X)elpmis(rellortnocetomersseleriW
)C(0FSCRWQP/)H(0FSHRWQPlortnocetomerDCLsseleriW
X)PAGLnoN(rellortnoclartneclareneGkrowtenCAC
BSDQPtcatnocyrDnoitcnuf
O)PAGL(noitauloSkrowteN
00S1DUNQP)rotacidninoitubirtsidrewop(IDP
0A41PFNMP584IP
ACZBAlortnocenoZtiknoitcnuflaicepS
CTIE -
-tatsomrehtortcelE
ATTQArotsimrehTsrehtO
Category Function
URNU76GB8A2/URNU96GB8A2
URNU763B8A2/URNU963B8A2
Note:
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.

4Multi V Air Conditioner
3. Piping Diagrams
Indoor Unit
Th2
Th3 Th2
Filter
Check
Valve
Solenoid Valve
EEV
Th1
Heat Exchanger
: Cooling
: Heating
Filter
Sirocco Fan
rotcennoCBCPnoitpircseD.COL
MOOR-NCerutarepmetriamoorrofrotsimrehT1hT
NI/EPIP-NCerutarepmetniepiprofrotsimrehT2hT
TUO/EPIP-NCerutarepmettuoepiprofrotsimrehT3hT
diuqiLsaGledoM
URNU76GB8A2/URNU763G8A2 Ø19.05(3/4)
Ø9.52(3/8)
URNU96GB8A2/URNU963G8A2 Ø22.2(7/8)

Service Manual 5
4. Wiring Diagrams
CONNECTOR NUMBER LOCATION POINT FUNCTION
CN-POWER AC POWER SUPPLY AC POWER LINE INPUT FOR INDOOR CONTROLLER
CN-MOTOR1, CN-MOTOR2 FAN MOTOR OUTPUT MOTOR OUTPUT OF BLDC
CN-D/PUMP DRAIN PUMP OUTPUT AC OUTPUT FOR DRAIN PUMP
CN-COMM COMMUNICATION CONNECTION BETWEEN INDOOR AND OUTDOOR
CN-EEV EEV OUTPUT EEV CONTROL OUTPUT
CN-FLOAT FLOAT SWITCH INPUT FLOAT SWITCH SENSING
CN-PIPE/IN PIPE SENSOR PIPE THERMISTOR
CN-PIPE/OUT DISCHARGE PIPE SENSOR DISCHARGE PIPE THERMISTOR
CN-ROOM ROOM SENSOR ROOM THERMISTOR
CN-REMO REMOTE CONTROLLER REMOTE CONTROL LINE
CN-CC DRY CONTACT DRY CONTACT LINE
CN-DISPLAY RF REMOCON RF REMOCON RECEIVER
CN-OPTION OPTION PCB OPTION PCB CONNECTOR
CN-ZONE ZONE CONTROLLER ZONE CONTROLLER LINE

6Multi V Air Conditioner
MAIN PCB
FAN PCB
OPTION PCB
CN-OPTION
CN-VM(IN)
CN-L CN-N
CN-MOTOR1(IN)
CN-MOTOR1
CN-MOTOR1(IN)
CN-MOTOR1
CN-FLOAT CN-EEV CN-LGMV CN-COM CN-D/PUMP CN-D/POWER
CN-REMO
CN-ROOM
CN-PIPE
CN-PIPE/O CN-MOTOR2
CN-MOTOR1

Service Manual - 7 -
5. Exploded View
149900A
137214
354210
330870
158591
352118
137213A
249951
137213B
352150-2
Note) * Please ensure GCSC since the replacement parts may be changed depending upon the buyer's request.
Please check the correct parts in View RPL(Replacement Part List) on GCGS.
(GCGS Website http://biz.Lgservice.com)
346810
359012
349600
266010
336610
55211G
152302
149900B
268711B
268711E
268711C
352150-1
130411B
wolley:rolocgnisuoHriAA0847651ROTSIMREHT
etihw:rolocgnisuoHNI.avEB0847652ROTSIMREHT
der:rolocgnisuoHTUO.avEC0847653ROTSIMREHT
130411A

P/NO : MFL46522901 January, 2008