Table of Contents
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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.
This product contains Fluorinated Greenhouse Gases. (R410A)
Single Inverter Outdoor Unit
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 : MFL68907802
www.lg.com
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Table of Contents
Related Manuals for LG UU18WE
Summary of Contents for LG UU18WE
- Page 1 This product contains Fluorinated Greenhouse Gases. (R410A) Single Inverter Outdoor Unit 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: •...
- Page 3 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 Serious injury or death can result if directions are ignores. CAUTION Minor injury or product damage can result if directions are ignored.
- Page 4 IMPORTANT SAFETY INSTRUCTIONS • Do not modify or extend the power cable. If power cable is dam- aged or has deteriorated, then it must be replaced. There is risk of fire or electric shock. • For installation, removal or reinstall , always contact the dealer or an Authorized Service Center.
- Page 5 IMPORTANT SAFETY INSTRUCTIONS • Be sure to use only those parts which are listed in the svc parts list. Never attempt to modify the equipment. The use of inappropri- ate parts can cause an electrical shock, excessive heat generation or fire.
- Page 6 IMPORTANT SAFETY INSTRUCTIONS CAUTION Installation • Two or more people must lift and transport the product. Avoid personal injury. • Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product. •...
- Page 7 IMPORTANT SAFETY INSTRUCTIONS • Do not insert hands or other objects through the air inlet or outlet while the product is operating. There are sharp and moving parts that could cause personal injury. • Be cautious when unpacking and installing the product. Sharp edges could cause injury.
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Page 8: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING ENER- TEST RUNNING INSTALLATION PI485 INSTALLATION FUNCTION INSTALLATION OF OUT- Dip S/W Setting Forced Cooling Operation DOOR UNIT Night Quiet Mode Saving Power Consumption CONNECTING PIPES Mode Lock Preparation of Piping Connection of piping - Outdoor INSTALLATION GUIDE AT Forming the piping... -
Page 9: Installation
INSTALLATION INSTALLATION Installation Tools Figure Name Figure Name Screw driver Multi-meter Electric drill Hexagonal wrench Measuring tape, Knife Ammeter Hole core drill Gas-leak detector Thermometer, Spanner Level Torque wrench Flaring tool set more than 30cm more than 30cm... -
Page 10: Installation Of Outdoor Unit
• Single Operation Additional Pipe Size mm(inch) Length A(m) Elevation B(m) Model refrigerant Liquid Standard Max. Standard Max. (g/m) UU18WE Ø12.7 (1/2) Ø6.35 (1/4) UU18W Ø12.7 (1/2) Ø6.35 (1/4) UU24WE Ø15.88 (5/8) Ø9.52 (3/8) UU24W Ø15.88 (5/8) Ø9.52 (3/8) UU30W Ø15.88 (5/8) -
Page 11: Connecting Pipes
CONNECTING PIPESINSTALLATION OF INDOOR, OUTDOOR UNIT 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 12: Connection Of Piping - Outdoor
CONNECTING PIPES Connection of piping - - When connecting in a downward direction, knock out the knock-out hole of the base Outdoor pan. (refer to figure 2) - Align the center of the piping and sufficiently <Figure 2> tighten the flare nut by hand. - Finally, tighten the flare nut with torque Torque wrench... -
Page 13: Forming The Piping
CONNECTING PIPES Forming the piping In cases where the Outdoor unit is installed above the Indoor unit perform the following. Form the piping by wrapping the connecting Tape the piping and connecting cable from portion of the indoor unit with insulation mate- down to up. -
Page 14: Wiring Connection
Circuit Breaker) between the power source and the unit. A disconnection device to ade- Model Phase(Ø) ELCB quately disconnect all supply lines must be fitted. UU18WE UU18W - Model of circuit breaker recommended by authorized personnel only UU24WE UU24W UU30W... - Page 15 (This equipment shall be provided with a cord set complying with the national regulation.) NORMAL CROSS-SECTIONAL AREA 1 Phase(Ø) Model Phase(Ø) Area(mm UU18WE UU18W UU24WE 3 Phase(Ø) UU24W UU30W The connecting cable connected to the outdoor unit should comply to IEC 60245 or HD 22.4 S4 (This equipment shall be provided with a cord set complying with the national reg-...
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Page 16: Connecting The Cable To Outdoor Unit
* Make sure the rubber bushes are Properly used in knock-out holes after connecting main Power cable UU18W/UU18WE/UU24WE UU24W/UU30W CAUTION • The circuit diagram is not subject to change without notice. • Be sure to connect wires according to the wiring diagram. -
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. - 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 18: Evacuation
LEAKAGE TEST AND EVACUATION Indoor unit Do a leakage test of all joints of the tubing (both Indoor unit and outdoor unit) and Outdoor unit both gas and liquid side service valves. Bubbles indicate a leak. Be sure to wipe off the soap with a clean cloth. -
Page 19: 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 20 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 21: Installation Pi485
INSTALLATION PI485 INSTALLATION PI485 Fix the PI485 PCB as shown in below images. For detailed installation method refer to PI485 Installation Manual. UU18W UU24W / UU30W... -
Page 22: Function
FUNCTION FUNCTION Dip S/W Setting (UU18W/UU24W/UU30W) 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. Dip Switch Function Normal Operation (No Function) Forced Cooling Opertation Saving Power Consumption (Step 1) Saving Power Consumption (Step 2) -
Page 23: Forced Cooling Operation
FUNCTION Forced Cooling Operation Adding the refrigerant in winter. Setting Procedure Set the Dip Switch as follow after shutting the power source down. UU18W / UU24W / UU30W Reset the power. Red LED and Green LED of PCB lights during work. (The indoor unit is operated by force.) If operation is done, Red LED will be turned off. -
Page 24: Night Quiet Mode
FUNCTION Saving Power Consumption Setting Procedure Set the Dip Switch as follow after shutting Saving Power Consumption operation is the the power source down. function which enables efficient operation by lowering the maximum power consumption value. Power Step 1 Step 2 consumption and current Nomal... -
Page 25: Mode Lock
FUNCTION Night Quiet Mode with Mode Lock. Mode Lock (Cooling) Mode Lock (Cooling) + Night Quiet Mode + Night Quiet Mode (step 1) (step 2) CAUTION • If compressor’s frequency and fan speed are down, the cooling capacity may decrease accord- ingly. -
Page 26: Installation Guide At The Seaside
INSTALLATION GUIDE AT THE SEASIDE INSTALLATION GUIDE AT THE SEASIDE Windbreak CAUTION Sea wind • Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. • Do not install the product where it could be exposed to sea wind (salty wind) directly.
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