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INSTALLATION MANUAL
AIR
CONDITIONER
Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it thoroughly.
Standard inverter
Original instruction
[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V.
Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si,
Gyeongsangnam-do, KOREA
P/NO : MFL68645301
www.lg.com
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Table of Contents
Related Manuals for LG UU85W
Summary of Contents for LG UU85W
- Page 1 Please retain this installation manual for future reference after reading it thoroughly. Standard inverter Original instruction [Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA www.lg.com...
- Page 2 TIPS FOR SAVING ENERGY TIPS FOR SAVING ENERGY Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below: •...
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Page 3: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE. Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product. WARNING It can result in serious injury or death when the directions are ignored. - Page 4 IMPORTANT SAFETY INSTRUCTIONS • Install the panel and the cover of control box securely. - There is risk of fire or electric shock. • Always install a dedicated circuit and breaker. - Improper wiring or installation may cause fire or electric shock.
- Page 5 IMPORTANT SAFETY INSTRUCTIONS CAUTION Installation • Always check for gas (refrigerant) leakage after installation or repair of product. - Low refrigerant levels may cause failure of product. • Install and insulate the drain hose to ensure that water is drained away properly based on the installation manual. - A bad connection may cause water leakage.
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Page 6: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING WIRING CONNECTION ENERGY Electrical Wiring Connecting Cables between Indoor Unit and Outdoor Unit IMPORTANT SAFETY Connecting the cable to Outdoor Unit Forming the piping INSTRUCTIONS LEAKAGE TEST AND INSTALLATION OF EVACUATION OUTDOOR UNIT Preparation Leakage test... -
Page 7: Installation Of Outdoor Unit
Elevation B(m) Model refrigerant Liquid Standard Max. Standard Max. (g/m) UU85W Ø22.2(7/8) Ø12.7(1/2) If installed tube is shorter than 15 m, addi- Indoor unit Outdoor unit tional charging is not necessary. Additional Refrigerant = (A-15) x Additional refrigerant (g) Indoor unit... - Page 8 Refrigerant = (L1-b) x B + (L2 + L3 + L4 + L5) x C Model b (mm) B(g/m) UU85W NOTE b : Rated performance for refrigerant line length. C : Additional charging Refrigerant of Branch Liquid Pipe. B : Additional charging Refrigerant of Main Liquid Pipe.
- Page 9 MODEL Cassette Duct Convertible Cassette Duct Convertible Cassette Duct Convertible CM24 N14*3 CM18 N14*4 UU85W UT42 NM2*2 UM42 N24*2 UV42 NL2*2 CT24 NP2*3 CB24L N32*3 CV24 NJ2*3 CT18 NQ2*4 CB18L N22*4 CV18 NJ2*4 BD unit PMUB11A PMUB111A PMUB1111A Applied Acces-...
- Page 10 INSTALLATION OF OUTDOOR UNIT Outdoor Unit PCB Setting Procedure For Simultaneous Operation System DIP_SW Setting Set the DIP_SW as below Table (Ⓐ) Auto Addressing Method Addressing work assigns address to each indoor unit. When firstly installing product or replac- ing the indoor unit PCB. Auto Addressing work should be done for simultaneous operation. * Work procedure 1) Set DIP_SW correctly.
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Page 11: Lifting Method
LIFTING METHOD LIFTING METHOD - When carrying the suspended, unit pass the ropes between legs of base panel under the unit. - Always lift the unit with ropes attached at four points so that impact is not applied to the unit. - Attach the ropes to the unit at an angle of 40°... -
Page 12: Installation
INSTALLATION INSTALLATION - Install at places where it can endure the weight and vibration/noise of the outdoor unit. - The outdoor unit supports at the bottom shall have width of at least 100mm under the Unit’s legs before being fixed. - The outdoor unit supports should have minimum height of 200mm. -
Page 13: Foundation For Installation
INSTALLATION Foundation for Installation - Fix the unit tightly with bolts as shown below so that unit will not fall down due to earthquake or gust. - Use the H-beam support as a base support - Noise and vibration may occur from the floor or wall since vibration is transferred through the in- stallation part depending on installation status. -
Page 14: Connecting Pipes
CONNECTING PIPES CONNECTING PIPES Preparation of Piping Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. Cut the pipes and the cable. - Use the accessory piping kit or the pipes pur- Copper Slanted Uneven Rough tube... -
Page 15: Plumbing Materials And Storage Methods
CONNECTING PIPES Plumbing materials and storage methods Pipe must be able to obtain the specified thickness and should be used with low impurities. Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound. Should not be mixed with contaminations such as dust, moisture. Refrigerant piping on three principles Drying Cleanliness... - Page 16 CONNECTING PIPES Nitrogen substitution method Welding, as when heating without nitrogen substitution a large amount of the oxide film is formed on the internal piping. The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of oil pump in compressor.
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Page 17: Refrigerant Piping Installation
REFRIGERANT PIPING INSTALLATION REFRIGERANT PIPING INSTALLATION Precautions on Pipe connection / Valve operation Pipe connection is done by connecting from the end of the pipe to the branching pipes, and the refrigerant pipe coming out of the outdoor unit is divided at the end to connect to each indoor unit. -
Page 18: Pipe Connections Between Indoor And Outdoor Unit
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT - Pipe connections can be done on the front side or on the side according to the installation - Be sure to let 0.2kgf/cm Nitrogen flow in the pipe when welding. - If Nitrogen was not flown during welding, many oxidized membranes may form inside the pipe and disturb the normal operations of valves and condensers. -
Page 19: Pipe Drawing Out
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Remove leakage prevention cap • Remove the leakage prevention cap attached to the outdoor unit service valve before pipe work. • Proceed the leakage prevention cap removal as follows: - Verify whether the liquid/gas pipes are locked. - Extract remaining refrigerant or air inside using the service port. - Page 20 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Method of drawing out pipes on the bottom side - Drawing out common pipe through base panel Liquid pipe Gas pipe Remove only liquid/gas pipe Knock out Method of drawing out pipes on the rear side - Proceed with the pipe work as shown in the below figure for rear side pie drawing out.
- Page 21 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Welding - Pipe connections can be done on the front side or on the side according to the installation envi- ronments. - Be sure to let 0.2kgf/cm Nitrogen flow in the pipe when welding. - If Nitrogen was not flown during welding, many oxidized membranes may form inside the pipe and disturb the normal operations of valves and condensers.
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Page 22: Thermal Insulation Of Refrigerant Pipe
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Thermal insulation of refrigerant pipe Be sure to give insulation work to refrigerant pipe by covering liquid pipe and gas pipe separately with enough thickness heat-resistant polyethylene, so that no gap is observed in the joint be- tween indoor unit and insulating material, and insulating materials themselves. -
Page 23: Wiring Connection
Model Phase(Ø) ELCB fitted. UU85W - Model of circuit breaker recommended by authorized personnel only Connecting Cables between Indoor Unit and Outdoor Unit - Connect the wires to the terminals on the control board individually according to the outdoor unit connection. - Page 24 NORMAL CROSS-SECTIONAL AREA Model Phase(Ø) Area(mm UU85W 3 Phase(Ø) The connecting cable connected to the outdoor unit should be complied with IEC 60245 or HD 22.4 S4 (This equipment shall be provided with a cord set complying with the national regulation.)
- Page 25 Ssc greater than or equal to the minimum Ssc value. Model Minimum Ssc Value (kVA) UU85W 3,016 - European / International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low voltage systems with input current >16 A and ≤75 A per...
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Page 26: Connecting The Cable To Outdoor Unit
WIRING CONNECTION Connecting the cable to Outdoor Unit Remove the side panel for wiring connection. Use the cord clamp to fix the cord. Earthing work - Case 1 : Terminal block of Outdoor Unit have mark. Connect the cable of diameter 1.6mm or more to the earthing terminal provided in the control box and do earthing. - Page 27 WIRING CONNECTION Example) Connection of power and communication cable Front side Main power Terminal block Ground wire Hold power cable Hold communication cable Communication cable Power/ Over Ground cable 50mm gap Main Power and Communication Connection Main power Terminal block Fix firmly not to be displaced Insulation sleeves...
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Page 28: Forming The Piping
WIRING CONNECTION Forming the piping Form the piping by wrapping the connecting portion of the indoor unit with insulation material and secure it with two kinds of vinyl tape. - If you want to connect an additional drain hose, the end of the drain outlet should be routed above the ground. -
Page 29: Leakage Test And Evacuation
LEAKAGE TEST AND EVACUATION LEAKAGE TEST AND EVACUATION Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. - Pressure in the system rises. - Operating current rises. - Cooling(or heating) efficiency drops. - Moisture in the refrigerant circuit may freeze and block capillary tubing. - Water may lead to corrosion of parts in the refrigeration system. -
Page 30: Evacuation
LEAKAGE TEST AND EVACUATION Do a leakage test of all joints of the tub- Indoor unit ing(both Indoor unit and outdoor unit) and both gas and liquid side service valves. Bubbles indicate a leak. Be sure to wipe off the soap with a clean cloth. Outdoor unit After the system is found to be free of leaks, relieve the nitrogen pressure by... -
Page 31: Test Running
TEST RUNNING TEST RUNNING Precautions In Test Running - The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated. CAUTION • For test run, carry out the cooling operation firstly even during heating season. If heating oper- ation is carried out firstly, it leads to the trouble of compressor. - Page 32 TEST RUNNING CAUTION After the confirmation of the above conditions, prepare the wiring as follows: Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided by the circuit diagram pasted on the inside of control box cover. Provide a circuit breaker switch between power source and the unit.
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Page 33: Self-Diagnosis Function
SELF-DIAGNOSIS FUNCTION SELF-DIAGNOSIS FUNCTION Error Indicator (Outdoor) Outdoor Error Ex) Error 21 (DC Peack) 2 Times 2 Times 2 Times LED01G (RED) 1 Time 1 Time 1 Time LED02G Error 21 (GREEN) Error LED 1 LED 2 Indoor Description Code (Red) (Green) status... -
Page 34: Dip S/W Setting (Uu36/42/48Wh)
SELF-DIAGNOSIS FUNCTION Dip S/W Setting If you set the Dip Switch when power is on, the change in setting is not applicable. The changing setting is enabled only when Power is reset. 9 10 Dip Switch Function 1 2 3 4 5 6 7 8 9 10 Normal Operation (No Function) 9 10 Forced Cooling Operation... - Page 35 SELF-DIAGNOSIS FUNCTION Dip Switch Function 1 2 3 4 5 6 7 8 9 10 Synchro_Duo 9 10 Synchro_Trio 9 10 Synchro_Quartet 9 10 WARNING When you set the dip switch, you should turn off the circuit breaker or shut the power source of the product down.
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Page 36: Installation Guide At The Seaside
Sea wind • If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment. • Periodic ( more than once/year ) cleaning of the dust or salt particles...