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Heat Recovery Unit 

SERVICE MANUAL
(Exploded View)

MODEL :  PRHR041/PRHR041A
 PRHR031/PRHR031A
 PRHR021/PRHR021A

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

R410A

Summary of Contents for Multi V Multi V PRHR041A

Page 1: ...ploded View MODEL PRHR041 PRHR041A PRHR031 PRHR031A PRHR021 PRHR021A 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 R410A ...

Page 2: ...All right reserved Only for training and service purposes LGE Internal Use Only 1 Specifications 3 2 Parts Functions 4 3 Dimensions 5 4 Piping Diagrams 6 5 Wiring Diagrams 7 6 Electric Characteristics 8 7 Exploded View 9 TABLE OF CONTENTS ...

Page 3: ...ranch Net Weight kg lbs Dimensions mm WxHxD Inch Casing Connecting Pipes Indoor Liquid Pipe mm inch Gas Pipe mm inch Outdoor Liquid mm inch Low Pressure mm inch High Pressure mm inch Sound Absorbing Insulation Material Power Supply PRHR021 PRHR021A PRHR031 PRHR031A PRHR041 PRHR041A 16 24 32 8 8 8 18 20 22 39 7 44 1 48 5 801x218x617 801x218x617 801x218x617 31 5x8 6x24 3 31 5x8 6x24 3 31 5x8 6x24 3 ...

Page 4: ...door unit GSP Gas pipe Liquid pipe connected with indoor unit LP2 Liquid pipe 2 Control the path for heating or cooling SOL1 2 Solenoid assembly 1 2 Liquid pipe connected with outdoor unit LP1 Liquid pipe 1 Pipe for high pressure gas HPGV High pressure gas pipe Pipe for low pressure gas LPGV Low pressure gas pipe Major function Symbol Parts name Balancing valve Low pressure gas pipe High pressure ...

Page 5: ...nternal Use Only 3 1 HR Units 480 18 29 32 137 5 13 32 345 13 19 32 481 18 15 16 218 8 19 32 38 1 1 2 60 2 3 8 30 1 3 16 174 6 27 32 453 17 27 32 204 8 1 32 98 3 27 32 CHASSIS CODE Outdoor Unit PRHR041 PRHR041A PRHR031 PRHR031A PRHR021 PRHR021A 76 Seongsan dong Changwon City Gyeongnam 641 713 Korea 3 Dimensions ...

Page 6: ... Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe s Solenoid EEV Sensor A B C D 4 1 HR Unit Ⓐ To be switched operation between cooling and heating by two Solenoid valve Ⓑ To be used decreasing noise according to sub cooling of inlet and outlet of indoor unit Simultaneous operation Ⓒ To prevent liquid charging between high pressure gas valve and HR unit at cooling mode Ⓓ To be controlled the pres...

Page 7: ... for room1 CN09 Solenoid valve 02 Bypass for room2 CN10 Solenoid valve 03 Bypass for room3 CN11 Solenoid valve 04 Bypass for room4 CN12 Solenoid valve bypass CN14 Sub cooling EEV CN16 SC Out Sensor sub cooling out CN16 SC In Sensor sub cooling in CN18 Liquid Sensor liquid receiver SW01M Solonoid valve number Setting When manual address SW02M 1 Selecting auto address or manual address SW02M 2 3 Set...

Page 8: ...terminals is not below or above the listed range limits 2 Maximum allowable voltage unbalance between phase is 2 3 MCA MFA MCA 1 25 x FLA MFA 4 x FLA Next lower standard fuse rating Minimum 15A 4 Select wire size based on the MCA 5 Instead of fuse use Circuit Breaker Units Power Supply IFM Input W Model Hz Volts Voltage Range MCA MFA kW FLA Cooling Heating PRHR021 50 220 Max 242 Min 198 0 1 15 14 ...

Page 9: ...135500A W4810A W54100B 137213B 55211FB 55211FA W4810B 55211G W54100A 130401 137213A 352118 552204A 552204B 149900 552204B 552200 561410D 561410B 561410A 561410C 561410G 561410F 561410E 561410I 561410H 249951 W6640B W6640A W4004 261704 268711 Part L No Sensor Location Remark Thermistor 1 263230 SC out heatproof PVC blue Thermistor 2 SC in heatproof PVC white Thermistor 3 Liquid heatproof PVC black ...

Page 10: ...A W4810A W54100B 137213B 55211FB 55211FA W4810B 55211G W54100A 130401 137213A 352118 552204A 552204B 149900 552204B 552200 561410B 561410A 561410C 561410G 561410F 561410E 561410I 249951 W6640B W6640A W4004 261704 268711 Part L No Sensor Location Remark Thermistor 1 263230 SC out heatproof PVC blue Thermistor 2 SC in heatproof PVC white Thermistor 3 Liquid heatproof PVC black ...

Page 11: ...1 135500A W4810A 137213B 55211FB 55211FA W4810B 55211G W54100A 130401 137213A 352118 552204A 552204B 149900 552204B 552200 561410B 561410A 561410F 561410E 561410I 249951 W6640A W6640B W4004 261704 268711 W54100B Part L No Sensor Location Remark Thermistor 1 263230 SC out heatproof PVC blue Thermistor 2 SC in heatproof PVC white Thermistor 3 Liquid heatproof PVC black ...

Page 12: ...P NO MFL67400004 AUGUST 2011 ...

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