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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.
TYPE : HIGH EFFICIENCY INVERTER
P/NO : MFL40910624
www.lg.com
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Table of Contents
Related Manuals for LG UU12WH
Summary of Contents for LG UU12WH
- Page 1 • 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. TYPE : HIGH EFFICIENCY INVERTER www.lg.com P/NO : MFL40910624...
- 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: •...
- Page 3 SAFETY PRECAUTIONS 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 CAUTION It can result in minor injury or product damage when the directions are ignored WARNING...
- Page 4 SAFETY PRECAUTIONS • Do not install the product on a defective installation stand. - It may cause injury, accident, or damage to the product. • Be sure the installation area does not deteriorate with age. - If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
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Page 5: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS INSTALLATION PLACES TEST RUNNING Outdoor unit Piping length and the elevation NIGHT SILENT OPERA- Synchro Operation TION SETTING Refrigerant Additional Charging Method Synchro Combination table SELF-DIAGNOSIS FUNC- Outdoor Unit PCB Setting Procedure TION For Simultaneous Operation System Error Indicator (Outdoor) Night Silent Operation setting INSTALLATION GUIDE... -
Page 6: Installation Places
Additional Pipe Size mm(inch) Length A(m) Elevation B(m) Model refrigerant Liquid Standard Max. Standard Max. (g/m) UU12WH Φ9.52(3/8) Φ6.35(1/4) UU18WH Φ12.7(1/2) Φ6.35(1/4) UU21WH UU24WH Φ15.88(5/8) Φ9.52(3/8) Ø15.88 Ø9.52 UU24WH (5/8) (3/8) UU36WH Ø15.88 Ø9.52 If installed tube is shorter than 7.5 m, additional charging is not necessary. -
Page 7: Synchro Operation
INSTALLATION OF OUTDOOR UNIT Synchro Operation Install the branch pipe so that pipe length and difference between high and low will not exceed below Spec Branch Selection of the best location Max.(m) Pipe Length & Height Total(L1+L2+L3+L4+L5) Main Pipe(L1) Branch Pipe (L2+L3+L4+L5) Each Indoor-Outdoor (H1) Indoor-Indoor (H2) -
Page 8: Synchro Combination Table
INSTALLATION OF OUTDOOR UNIT Synchro Combination table Possible combination of indoor units Synchro Trio Quartet IDU : INDOOR UNIT ODU : OUTDOOR UNIT BD : BRANCH DIS- TRIBUTOR UNIT REMO : WIRED RE- REMO REMO REMO MOTE CON- TROLLER MODEL Cassette Duct Cassette... -
Page 9: Outdoor Unit Pcb Setting Procedure For Simultaneous Operation System
INSTALLATION OF OUTDOOR UNIT Outdoor Unit PCB Setting Table DIP SW2 Setting Indoor Unit No. DIP SW2 Procedure For Simultaneous 1(Single) Operation System : Default DIP SW2 Setting 2(Duo) Ⓐ Set the DIP SW2 as below Table ( Auto Addressing Method 3(Trio) Addressing work assigns address to each indoor unit. -
Page 10: Wiring Connection
- Model of circuit breaker recommended by authorized personnel only Model Phase(Ø) ELCB UU12WH UU18WH UU21WH UU24WH UU24WH UU36/42/48WH 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 11 WIRING CONNECTION CAUTION When none are available, follow the instruc- tions below. Installation work must be performed in - Do not connect wiring of different thick- accordance with the national wiring stan- nesses to the power terminal block. (Slack in dards by authorized personnel only the power wiring may cause abnormal heat.) - When connecting wiring which is the same...
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Page 12: The Outdoor Unit Installation
THE OUTDOOR UNIT INSTALLATION Connecting the cable to Out- Connecting door Unit cable terminal - Remove the side panel for wiring connec- Power tion. cord - Use the cord clamp to fix the cord. terminal - Earthing work Case 1 :Terminal block of Outdoor Unit have Cord mark. - Page 13 - The installation piping is connectable in 3 di- rections.(refer to figure 1) <Figure 1> Backward Forward Sideways Preventing foreign objects from entering (refer to figure 2) - Plug the pipe through-holes with putty or in- sulation material(procured locally)to stop up all gaps,as shown in the figure 2.
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Page 14: Connecting Pipes
CONNECTING PIPES CONNECTING PIPES Preparation of Piping Flaring work - Carry out flaring work using dedicated flaring Main cause of gas leakage is defect in flaring tool for R410A as shown below. work. Carry out correct flaring work in the fol- lowing procedure. -
Page 15: Connecting The Pipings To The Indoor
CONNECTING PIPES Connecting the pipings to the Connecting the pipes to the indoor unit and drain hose to Outdoor unit drain pipe - Align the center of the piping and sufficiently tighten the flare nut by hand. - Align the center of the pipings and suffi- ciently tighten the flare nut by hand. - Page 16 CONNECTING PIPES - Align the center of the piping and sufficiently - When connecting in a downward direction, tighten the flare nut by hand. knock out the knock-out hole of the base pan. (refer to figure 2) - Finally, tighten the flare nut with torque wrench until the wrench clicks.
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Page 17: Forming The Piping
CONNECTING PIPES Forming the piping In cases where the outdoor unit is installed Form the piping by wrapping the connecting above the indoor unit perform the following. portion of the indoor unit with insulation mate- Tape the piping and connecting cable from rial and secure it with two kinds of vinyl tape. -
Page 18: Leakage Test And Evacuation
CONNECTING PIPES LEAKAGE TEST AND EVACUATION Air and moisture remaining in the refrigerant CAUTION system have undesirable effects as indicated below. To avoid nitrogen entering the refrigerant Pressure in the system rises. system in a liquid state, the top of the cylinder must be higher than its bottom Operating current rises. -
Page 19: Evacuation
LEAKAGE TEST AND EVACUATION Indoor unit Evacuation Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo and Hi" knob of the mani- fold valve is open. Then, run the vacuum Outdoor unit pump. -
Page 20: Test Running
LEAKAGE TEST AND EVACUATION TEST RUNNING 1 Precautions in test running * Is there any faulty wiring? - The initial power supply must provide at * Are not terminal screws loosened? least 90% of the rated voltage. M4..118N.cm{12kgf.cm} Otherwise, the air conditioner should not M5..196N.cm{20kgf.cm} be operated. - Page 21 TEST RUNNING CAUTION After the confirmation of the above conditions, prepare the wiring as follows: 1) 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.
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Page 22: Night Silent Operation Setting
NIGHT SILENT OPERATION SETTING NIGHT SILENT OPERATION SETTING 1 Open the panel of outdoor unit. 2 Set the DIP SW01N as below Fig. DIP SW01N DIP Switch2 Function Night Silent Operation - Night Silent Operation - 3 Close the panel... -
Page 23: Self-Diagnosis Function
SELF-DIAGNOSIS FUNCTION SELF-DIAGNOSIS FUNCTION Error Indicator (Outdoor) Outdoor Error Ex) Error 21 (DC Peak) 2 Times 2 Times 2 Times LED01G (RED) 1 Sec. 1 Sec. 1 Sec. 1 Time 1 Time 1 Time LED02G (GREEN) 2 Sec. 2 Sec. Erro Code Description LED 1(Red) -
Page 24: Installation Guide At The Seaside
Install the outdoor unit on the opposite - If you can’t meet above guide line in the side of the sea wind direction. seaside installation, please contact LG Electronics for the additional anticorrosion - Periodic ( more than once/year ) cleaning...