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P/NO : MFL69286801

INSTALLATION MANUAL

SINGLE DUCTED SPLIT

AIR

CONDITIONER

www.lg.com

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.

ENGLISH

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Summary of Contents for 100K

Page 1: ...lease 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 ENGLISH ...

Page 2: ...irection of the air flow vertically or horizontally to circulate indoor air Speed up the fan to cool or warm indoor air quickly in a short period of time Open windows regularly for ventilation as the indoor air quality may deteriorate if the air con ditioner is used for many hours Clean the air filter once every 2 weeks Dust and impurities collected in the air filter may block the air flow or weak...

Page 3: ... a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer seller a qualified electrician or an Authorized Service Center Do not disassemble or repair the product There is risk of fire or electric shock Always ground the product There is risk of fire or electric shock Install the panel and the ...

Page 4: ...fter installation or repair of product Low refrigerant levels may cause failure of product Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage Keep level even when installing the product To avoid vibration or water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause...

Page 5: ...ection Drainage 10 Refrigeration Piping Connections 12 Guideline for Long Piping System 13 Additional Refrigerant Charge 14 Long Line Sizing 16 Oil Addition 16 Oil separator addition 17 Unit Controller Operation 18 Maintenance 19 Trouble Shooting 20 Electrical Wiring 21 INSTALLATION GUIDE AT THE SEASIDE TABLE OF CONTENTS TABLE OF CONTENTS ENGLISH ...

Page 6: ...s power consumption will increase and malfunction may occur Tall buildings around the unit may create downdraft affecting air discharge Outdoor fan is na axial flow fan which does not an air pipe Avoid installing the outdoor unit right below window or between constructions otherwise noise caused by unit operation will go indoors If the unit can be easily approached by persons without permission me...

Page 7: ...ension Heat exchanger Use a vacuum cleaner and a nylon brush to clean up the heat exchanger If there is a com pressed air source available blow off the dust from the exchanger surface with compressed air You should note that with a proper air ltering net and suf cient maintenance there is no need to wash the indoor exchanger s surface However the outside heat exchanger should be washed and cleaned...

Page 8: ...d can hardly drive the fan to rotate As a result the air volume and residual pressure will become in sufficient and unit performance will be affected seriously However if the belt is too tight the fan or the motor bearings will be worn out more quickly and the fan or the motor will have lower performance and shorter operating life Too loose or too tight belts are harmful to the units and will make...

Page 9: ...opes An elbow trap at least 50mm in in height must also be provided If possible install a U bend fitted with an inspection cap Where the condensate lines from several units are joined together each individual outlet must be fitted with an elbow trap After routing and connecting condensate lines pour water into the collecting pan and check that it drains correctly An auxiliary condensate pump could...

Page 10: ...e copper pipe end into the bar of flare tool about 0 0 5mm Higher see illustra tion Flare the pipe ends Tape the flaring portion to protect it from the dust or damages Pipe Cutter Pipe Reamer Slanted Rough 90 Point down Bar Bar Copper pipe Clamp handle 0 0 5 mm Handle Yoke Clone Red arrow mark Improper flaring Inclined When properly flared the internal surface of the flare will evenly shine and be...

Page 11: ... the pipes Evacuate the piping This operation which should last at least 15 minutes or even longer if there are large piping lengths and changes in elevation should be followed by a leak test To this effect when the piping has been evacuated close the pressure gauge tap note the value on the gauge then wait for 15 minutes If the needle moves there is a leak in the system Make the neccessary adjust...

Page 12: ...tained 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 Equivalent Length is Real length of tubing Number of elbow Equivalent length of each elbow Number of oil trap Equivalent length of each oil trap Unit Feet Nominal Dia Equivalent Length for Oil Trap ft 3 8 4 3 1 2 4 9 5 8 6 6 3 4 7 9 7 8 9 ...

Page 13: ...with total measured length of feet and with chargeless length 15 feet Liquid line 50 15 feet x 0 62 oz ft 21 7 oz Suction line 50 15 feet x 0 06 oz ft 2 1 oz Total additional charge for interconnecting pipe 23 8 oz Additional Refrigerant Charge R410 Line charge Suction inch oz ft Liquid inch oz ft 1 2 0 04 1 4 0 19 5 8 0 06 5 16 0 33 3 4 0 09 3 8 0 51 7 8 0 12 1 2 1 01 1 1 8 0 2 5 8 1 64 1 3 8 0 3...

Page 14: ...he charts below the line sizes that can be selected for each tonnage of unit and the maximum equivalent length and maximum rise of the line The maximum actual line length is 200 feet Equivalent line length would include elbows and other components that would increase the equivalent length R 22 Liquid line maximum rise chart R 410A Liquid line maximum rise chart Shaded area indicates system needs o...

Page 15: ...t 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 The maximum actual line length is 200 feet equivalent line lengths would include elbows and other components that would increase the equivalent length R22 suction line capacity reduction chart R410 suction line capa...

Page 16: ...le of thumb is to multiply the amount of refrigerant in the system by 2 2 and multiply this sor nameplate and add the remaining amount to the system This means that most system doesn t need additional oil unless the refrigerant charge exceeds 35 pounds Example Oil separator addition Oil separator should be added in case of the long piping system as refer to below table Model 100K 150K Long pipe le...

Page 17: ...INSTALLATION OF UNIT 17 ENGLISH Unit Controller Operation Wired Remote Controller HR HR SWEEP SLEEP LED Display 12 1 10 4 9 7 11 6 3 2 8 5 ...

Page 18: ...ild detergent Rinse and dry before replacing on unit Never use petrol alcohol or any other chemical product Every month or more often necessary Unit casing Remove dust from the front panel with a soft duster or wipe a dump cloth with a mild soap solution Never use petrol alcohol or any other chemical product Every month or more often necessary Drain pan and evacuation piping Clean and check for ob...

Page 19: ...ture or other fabrics in the room The air conditioner is noisy There is a noise like shower This is a noise made by dehu midi fication water being treated inside the unit Condensation water seems to be running out of the unit Condensates are produced when the air conditioner cools the air in the room The air conditioner will not run for 3 minutes after it has been restarted This is due to a system...

Page 20: ...und pressure terminal Power wire 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 tional regulation The connecting cable connected to the indoor and outdoor unit should be com Rubber insulation type H07RN F ap proved by HAR or SAA This equip ment shall be provi...

Page 21: ...vent damage from localized heavy rain and avoid frequent flooded area 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 the heat exchanger by using water CAUTION Air conditioners should not be installed in areas where corrosive gases such as aci...

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