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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 : Standard inverter
MFL69190205
Rev.01_051719
Copyright © 2015 - 2019 LG Electronics Inc. All Rights Reserved.
www.lg.com
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Related Manuals for LG UU18W
Summary of Contents for LG UU18W
- Page 1 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 : Standard inverter www.lg.com MFL69190205 Copyright © 2015 - 2019 LG Electronics Inc. All Rights Reserved. Rev.01_051719...
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Page 2: Table Of Contents
Table of contents TABLE OF CONTENTS SAFETY PRECAUTIONS INSTALLATION OF OUTDOOR UNIT Night Silent Operation setting WIRING CONNECTION Electrical Wiring Connecting Cables between Indoor Unit and Outdoor Unit Connecting the cable to Outdoor Unit CONNECTING PIPES Preparation of Piping Connecting the pipes to the Outdoor unit Forming the piping LEAKAGE TEST AND EVACUATION Preparation... -
Page 3: Safety Precautions
Safety Precautions Safety Precautions To prevent the injury of the user or other people and property damage, the following instructions must be followed. n Be sure to read before installing the air conditioner. n Be sure to observe the cautions specified here as they include important items related to safety. n Incorrect operation due to ignoring instruction will cause harm or damage. - Page 4 Safety Precautions - There is the risk of death, injury, fire or explosion. • Do not install the product at a place that there is concern of falling down. - Otherwise, it may result in personal injury. • Use caution when unpacking and installing. - Sharp edges may cause injury.
- Page 5 Safety Precautions CAUTION Installation • Install the drain hose to ensure that drain can be securely done. - Otherwise, it may cause water leakage. • Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors.
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Page 6: Installation Of Outdoor Unit
Elevation B(m) mm(inch) Model Capacity refrigerant (g/m) Liquid Standard Max. Standard Max. UU18W 5 kW Ø 12.7(1/2) Ø 6.35(1/4) UU24W 7 kW Ø 15.88(5/8) Ø 9.52(3/8) UU30W 8 kW Ø 15.88(5/8) Ø 9.52(3/8) UU36W/UU37W 10 kW Ø 15.88(5/8) Ø 9.52(3/8) UU42W/UU43W 12.5 kW... - Page 7 Installation of Outdoor Unit n Synchro Operation Install the branch pipe so that pipe length and difference between high and low will not exceed below Spec. [Unit : m] Branch Pipe Length & Height Spec(MAX.) Total(L1+L2+L3+L4+L5) Main Pipe(L1) Branch Pipe (L2+L3+L4+L5) Each Indoor-Outdoor (H1) Remote...
- Page 8 Installation of Outdoor Unit 3. Synchro Combination table Possible combination of indoor units Synchro Trio Quartet IDU : INDOOR UNIT ODU : OUTDOOR UNIT BD : BRANACH DISTRIBUTOR UNIT REMO : WIRED REMOTE REMO REMO REMO CONTROLLER Ceiling Ceiling Ceiling MODEL Cassette Duct Cassette Duct...
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Page 9: Night Silent Operation Setting
6) If you fail to perform the Addressing work, repeat step 2)~5). 4(Quartet) Night Silent Operation setting 1. Open the Side panel or Top Cover of outdoor unit. 2. Set the SW01N (PIP SW2). UU18W UU36W UU37W UU24W UU42W UU43W... -
Page 10: Wiring Connection
A disconnection device to adequately disconnect all supply lines must be fitted. • Model of circuit breaker recommended by authorized personnel only Model Phase(Ø ) ELCB UU18W 20 A UU24W 30 A UU30W 30 A UU36W 40 A... - Page 11 10±3 mm 10±3 mm Model Phase(Ø ) Area(mm NORMAL UU18W/24W/30W CROSS-SECTIONAL UU36W/UU42W /UU48W/UU60W AREA 0.75 mm UU37W/UU43W /UU49W/UU61W When the connection line between the indoor unit and outdooor unit is over 40 m, connect the telecommunication line and power line separately.
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Page 12: 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 - Connect the cable of diameter more to the earthing terminal provided in the control box and do earthing. -
Page 13: 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 Copper Slanted Uneven Rough following procedure. tube 90° Cut the pipes and the cable. • Use the accessory piping kit or the pipes purchased locally. -
Page 14: Connecting The Pipes To The Outdoor Unit
Connecting Pipes Connecting the pipes to the Outdoor unit • Align the center of the piping and sufficiently tighten the flare nut by hand. Continuous • Finally, tighten the flare nut with torque wrench until the wrench clicks. - When tightening the flare nut with torque Torque wrench wrench, ensure the direction for tightening... - Page 15 Connecting Pipes • When connecting in a downward direction, knock <Figure 2> out the knock-out hole of the base pan. (refer to figure 2) Knock-out Base pan Preventing foreign objects from entering <Figure 3> (Figure3) Liquid side piping • Plug the pipe through-holes with putty or insulation material(procured locally)to stop up all Gas side piping gaps,as shown in the figure 3.
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Page 16: Forming The Piping
opening around the pipings with Connecting Pipes gum type sealer. Forming the piping Plastic band Form the piping by wrapping the connecting portion of the indoor Seal a small Seal a small Seal a small unit with insulation material and opening around opening around opening around... -
Page 17: 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. 1. Pressure in the system rises. 2. Operating current rises. 3. Cooling(or heating) efficiency drops. 4. Moisture in the refrigerant circuit may freeze and block capillary tubing. 5. -
Page 18: Evacuation
Leakage test and Evacuation Evacuation 1. Connect the charge hose end described in the Indoor unit preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo and Hi" knob of the manifold valve is open. Then, run the vacuum pump. The operation time for evacuation varies with tubing length and capacity of the pump. -
Page 19: Test Running
Test running Test running 1. 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 ① For test run, carry out the cooling operation firstly even during heating season. If heating operation is carried out firstly, it leads to the trouble of compressor. - Page 20 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 21: Function
Function Function Forced Cooling Operation • Adding the refrigerant in winter. Setting Procedure 1) Set the DIP Switch as follow after shutting the power source down. UU18W UU36W UU37W UU24W UU42W UU43W UU30W UU48W UU49W UU60W UU61W 2) Reset the power. -
Page 22: Self-Diagnosis Function
LED01G (RED) 1 Seconds 1 Seconds 1 Seconds 1 Time 1 Time 1 Time LED02G (GREEN) 2 seconds 2 seconds UU18W/24W/30W UU36W/42W/48W/60W UU37W/43W/49W/61W LED 1 LED 2 Indoor Error Code Description (Red) (Green) status 2 times ◑ 1 time ◑... -
Page 23: Installation Guide At The Seaside
Installation Guide at the Seaside Installation Guide at the Seaside CAUTION 1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. 2. Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product. - Page 24 24 Air Conditioner...