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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.
SINGLE DUCTED SPLIT
P/NO : MFL69286801
www.lg.com
Table of Contents
Related Manuals for LG 100K
Summary of Contents for LG 100K
- 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. SINGLE DUCTED SPLIT www.lg.com P/NO : MFL69286801...
- 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 CAUTION It can result in minor injury or product damage when the directions are ignored WARNING... - Page 4 IMPORTANT SAFETY INSTRUCTIONS • Do not let the air conditioner run for a long time when the humidity is very high and a door or a win- dow is left open. - Moisture may condense and wet or damage furniture. •...
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Page 5: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING EN- INSTALLATION GUIDE ERGY AT THE SEASIDE IMPORTANT SAFETY IN- STRUCTIONS INSTALLATION OF UNIT Indoor Units Installation Outdoor Unit Installation Connection Drainage Refrigeration Piping Connections Guideline for Long Piping System Additional Refrigerant Charge Long Line Sizing Oil Addition Oil separator addition... -
Page 6: Installation Of Unit
INSTALLATION OF UNIT INSTALLATION OF UNIT Indoor Units Installation The distance between the side and the sidewall cannot be less than 1 meter. In horizontal instal- lation, ceiling hooks should be prepared for lifting the unit; in vertical installation, fix the unit on the floor with bolts. - Page 7 INSTALLATION OF UNIT INDOOR UNIT Maximum Allowable Piping Length & Elevation Difference MAINTENANCE • Air Filter According to specific environment conditions, the air filter is often fixed at a return air entrance, to effectivel y screen soot, dust, dirt, farina and other matters. The air filter is usually made of nylon or leno fiber, and can be washed with water.
- Page 8 INSTALLATION OF UNIT • Fan Installation and Adjustment The fan rotating rate is subject to the air volume required by the units, the unit components and the resistance in return air pipe. Based on the demanded air volume and the total static pres- sure, according to the performance curve, you can make out the fan-rotating rate.
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Page 9: Connection Drainage
INSTALLATION OF UNIT Connection Drainage Condensate drainage is provided on the unit. The connection is located at the rear. Use a 19 mm diameter plastic tube. To ensure correct condensate drainage,the drain line must be installed with a gradient of at least 2 % (2cm per metre) and without any upward slopes. -
Page 10: Refrigeration Piping Connections
- Measure the distance between the Indoor and the Outdoor Unit - Cut the cable 1.5 m. Longer than the pipe length PIPE SIZE Unit size LIQUID 100k 1 1/8 Pipe 150k 1 3/8 Reamer Slanted Rough Remove burrs 90°... - Page 11 INSTALLATION OF UNIT Refrigerant piping connections (FLARE connections) To avoid alteration of unit capacities, check that piping lengths and changes in elevation are kept to a strict minimum. Before connecting the refrigerant lines, follow the procedures below (if precharged connection lines are not supplied): - Select copper pipe diameters according to the size of unit to be installed.
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Page 12: Guideline For Long Piping System
INSTALLATION OF UNIT Guideline for Long Piping System All information in this document are from some OEMs. Please use this document for guideline and confirm that the system temperature, pressure,oli and voltage are maintained at normal ap- proved level. Equivalent Length Equivalent Length is the covert length and includes parts such as elbow, which has pressure losses in the pipe. -
Page 13: Additional Refrigerant Charge
INSTALLATION OF UNIT Additional Refrigerant Charge R410 Line charge Suction (inch) oz/ft Liquid (inch) oz/ft 0.04 0.19 0.06 5/16 0.33 0.09 0.51 0.12 1.01 1-1/8 1.64 1-3/8 0.31 2.46 1-5/8 0.43 3.27 2-1/8 0.76 1-1/8 5.58 2-5/8 1.17 * Charges are based upon 40 oF suction temperature and 105 oF liquid temperature oz in this page is mass indicating (1 oz = 28.35g) Additioanl charge = ( Total piping length - chargeless length ) x additional charge rate Example : For a R22 system using 3/8 liquid line and a 3/4 suction line with total measured... -
Page 14: Long Line Sizing
INSTALLATION OF UNIT Long Line Sizing The following considerations have already been accounted for when relating to the selection charts. - R-22 Maximum Pressure Drop is 35 psig - R-410A Maximum Pressure Drop is 60 Psig - Increased charge levels - Maximum recommended velocity of 400 fpm - Maximum velocity of 4100 fpm Long line selection Chart:... - Page 15 INSTALLATION OF UNIT Suction Line sizing criteria The following considerations have already been accounted for when relating to the selection charts. - Minimum velocity of 100 fpm for vertical lines and 800fpm for horizontal lines guarantee proper oil return - Minimal pressure drop to minimize capacity loss Suction line Selection Chart: The charts below show the line sizes that can be selected for each tonnage of nit ang the per- cent of capacity reduction the system will have because of the long line set application.
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Page 16: Oil Addition
Oil separator addition Oil separator should be added in case of the long piping system as refer to below table. Model Long pipe length Oil separator spec or egual 100K Over than 30m Emerson model A-WZ5589 150K Over than 10m... -
Page 17: Unit Controller Operation
INSTALLATION OF UNIT Unit Controller Operation Wired Remote Controller LED Display SWEEP SLEEP... -
Page 18: Maintenance
INSTALLATION OF UNIT Maintenance The unit are designed to operate for long periods of time with a minimum of maintenance. However, the following operations must be performed regularly. RECOMMENDED COMPONENTS MAINTENANCE OPERATIONS FREQUENDED - Clean with a vacuum cleaner or tap gen- tly then wash in warm water (40 C)with a mild detergent. -
Page 19: Trouble Shooting
INSTALLATION OF UNIT Trouble Shooting Trouble-shooting Guide Problem Probable cause and remedy - Check that the fuse has not blown or that main circuit breaker has not tripped. • The air conditioner does not - Is the main switch in the OFF position ? run. -
Page 20: Electrical Wiring
INSTALLATION OF UNIT Electrical Wiring Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block. CAUTION Power wire Round pressure terminal • The power cable connected to the out- door unit should be complied with the tion, type H07RN-F approved by HAR or SAA) (This equipment shall be provided with a cable set complying with the na-... - Page 21 Sea wind - If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorro- sion. - Periodic ( more than once/year ) clean- ing of the dust or salt particles stuck on...