Installation Manual
Page 2
... work gloves when installing equipment. • Never assume electrical power is connected to the wiring diagram and these instructions when wiring. in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid, level foundation for leaks before starting the test run inside the unit being serviced. 2 Outdoor Unit Provide snow vents. Improper connections and inadequate grounding can cause severe personal injury or death. in a room...
... work gloves when installing equipment. • Never assume electrical power is connected to the wiring diagram and these instructions when wiring. in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid, level foundation for leaks before starting the test run inside the unit being serviced. 2 Outdoor Unit Provide snow vents. Improper connections and inadequate grounding can cause severe personal injury or death. in a room...
Installation Manual
Page 4
... air conditioner. • Improper installation by the user may cause fire or electric shock. 4 Outdoor Unit I Installation Have all electric work done by the following instructions must be followed. The seriousness is classified by a licensed electrician according to ignoring instruction will cause harm or damage. I Incorrect operation due to "Electric Facility Engineering Standard" and "Interior Wire Regulations" and the instructions given in this manual and always use a special circuit...
... air conditioner. • Improper installation by the user may cause fire or electric shock. 4 Outdoor Unit I Installation Have all electric work done by the following instructions must be followed. The seriousness is classified by a licensed electrician according to ignoring instruction will cause harm or damage. I Incorrect operation due to "Electric Facility Engineering Standard" and "Interior Wire Regulations" and the instructions given in this manual and always use a special circuit...
Installation Manual
Page 5
Use the correctly rated breaker or fuse. • There is risk of fire, electric shock, explosion, or injury. Safety Precautions Do not install, remove, or re-install the unit by LGE are used, fire or explosion may be damaged. Do not install the product on the unit. • If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may result...
Use the correctly rated breaker or fuse. • There is risk of fire, electric shock, explosion, or injury. Safety Precautions Do not install, remove, or re-install the unit by LGE are used, fire or explosion may be damaged. Do not install the product on the unit. • If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may result...
Installation Manual
Page 6
... pipe and the installation appliances that were used until now • Mixing the oil of R22 and R410A may cause failure of the unit due to lack of control box and the panel. • If the cover and panel are not installed securely, dust or water may enter the outdoor unit and fire or electric shock may cause explosion, fire, and burn. Should the refrigerant leak...
... pipe and the installation appliances that were used until now • Mixing the oil of R22 and R410A may cause failure of the unit due to lack of control box and the panel. • If the cover and panel are not installed securely, dust or water may enter the outdoor unit and fire or electric shock may cause explosion, fire, and burn. Should the refrigerant leak...
Installation Manual
Page 8
... air conditioner, not a precision refrigeration system. • There is risk of sufficient current carrying capacity and rating. • Cables that are too small may result. 90˚ Use power cables of physical injury, electric shock, or product failure. Do not install the unit where combustible gas may leak. • If the gas leaks and accumulates around the unit, an explosion may leak, generate heat, and...
... air conditioner, not a precision refrigeration system. • There is risk of sufficient current carrying capacity and rating. • Cables that are too small may result. 90˚ Use power cables of physical injury, electric shock, or product failure. Do not install the unit where combustible gas may leak. • If the gas leaks and accumulates around the unit, an explosion may leak, generate heat, and...
Installation Manual
Page 10
... power switch can result in severe damage to internal parts. Also support the outdoor unit at the specified posi- Be very careful about product transportation. • Only one person should not carry the product if it , causing property damage, product failure, and personal injury. Be sure the installation area does not deteriorate with age. • If the base collapses, the air conditioner...
... power switch can result in severe damage to internal parts. Also support the outdoor unit at the specified posi- Be very careful about product transportation. • Only one person should not carry the product if it , causing property damage, product failure, and personal injury. Be sure the installation area does not deteriorate with age. • If the base collapses, the air conditioner...
Installation Manual
Page 11
... of changing the Indoor unit PCB. Installation Manual 11 Do not insert hands or other problems. Auto-addressing should also be done in case of the refrigerant piping during and after stopping operation. • Wait at a place in . • There are sharp and moving parts that could cause personal injury. Do not directly turn off the main power switch. Otherwise it is not affected by operation mode changing noise. •...
... of changing the Indoor unit PCB. Installation Manual 11 Do not insert hands or other problems. Auto-addressing should also be done in case of the refrigerant piping during and after stopping operation. • Wait at a place in . • There are sharp and moving parts that could cause personal injury. Do not directly turn off the main power switch. Otherwise it is not affected by operation mode changing noise. •...
Installation Manual
Page 12
... responsible for switch settings Make relationship between outdoor, indoor, remote controller, and option connections clear. (Prepare control circuit diagram) Sleeve and insert work Installation of indoor unit and HR unit Refrigerant piping work Take account of gradient of drain piping Check model name to make sure the fitting is made correctly Special attention to dryness, cleanness and tightness Drain pipe work Adjust to downward gradient Outdoor unit foundation work The foundation must be level Installation of outdoor unit Avoid short circuits and...
... responsible for switch settings Make relationship between outdoor, indoor, remote controller, and option connections clear. (Prepare control circuit diagram) Sleeve and insert work Installation of indoor unit and HR unit Refrigerant piping work Take account of gradient of drain piping Check model name to make sure the fitting is made correctly Special attention to dryness, cleanness and tightness Drain pipe work Adjust to downward gradient Outdoor unit foundation work The foundation must be level Installation of outdoor unit Avoid short circuits and...
Installation Manual
Page 13
... the opposite side of the outdoor unit. • It should be installed close to sea wind (salty wind) directly. Air conditioners should avoid direct exposure to the sea wind. Install the outdoor unit on the heat exchanger by using water Installation Manual 13 Do not install the product where it needs additional anticorrosion treatment on the product. If you can result corrosion on the heat exchanger. Otherwise it could cause...
... the opposite side of the outdoor unit. • It should be installed close to sea wind (salty wind) directly. Air conditioners should avoid direct exposure to the sea wind. Install the outdoor unit on the heat exchanger by using water Installation Manual 13 Do not install the product where it needs additional anticorrosion treatment on the product. If you can result corrosion on the heat exchanger. Otherwise it could cause...
Installation Manual
Page 15
... in neighboring floor. (3) Location with the relevant local and national regulations for air passage and service work properly. • Do not place the refrigerant container under any special environment where oil, steam and sulfuric gas exist. • It is 0. Make the foundation as high as the environment-friendly refrigerant and encouraged to use unit under the direct rays of higher...
... in neighboring floor. (3) Location with the relevant local and national regulations for air passage and service work properly. • Do not place the refrigerant container under any special environment where oil, steam and sulfuric gas exist. • It is 0. Make the foundation as high as the environment-friendly refrigerant and encouraged to use unit under the direct rays of higher...
Installation Manual
Page 30
... it. 30 Outdoor Unit Always use a non-oxidizing brazing material for the designed pressure 3.8MPa. Use the following table as rated length, difference in heating/cooling performance, drip of the refrigerant pipe from entering the piping during installation. 4. We recommend the following materials for refrigerant piping. • Material: Seamless phosphorous deoxidized copper pipe • Wall thickness : Comply with a dry inert gas. 3. Use care to the compressors and flux...
... it. 30 Outdoor Unit Always use a non-oxidizing brazing material for the designed pressure 3.8MPa. Use the following table as rated length, difference in heating/cooling performance, drip of the refrigerant pipe from entering the piping during installation. 4. We recommend the following materials for refrigerant piping. • Material: Seamless phosphorous deoxidized copper pipe • Wall thickness : Comply with a dry inert gas. 3. Use care to the compressors and flux...
Installation Manual
Page 31
... of the indoor unit and the installation pipe drawing. After selecting diameter of the refrigerant pipe to suit total capacity of the indoor unit connected after perfect evacuation. - Pipe Length between Outdoor Units (Low pressure gas pipe, High pressure gas pipe, Liquid pipe) = Product length (1,280mm(50-3/8 inch)) + (distance between outdoor units) Unit: mm(inch) 1,280(50-3/8) Distance between outdoor units Installation Manual 31 ENGLISH Refrigerant piping installation WARNING When installing and moving the air conditioner to another...
... of the indoor unit and the installation pipe drawing. After selecting diameter of the refrigerant pipe to suit total capacity of the indoor unit connected after perfect evacuation. - Pipe Length between Outdoor Units (Low pressure gas pipe, High pressure gas pipe, Liquid pipe) = Product length (1,280mm(50-3/8 inch)) + (distance between outdoor units) Unit: mm(inch) 1,280(50-3/8) Distance between outdoor units Installation Manual 31 ENGLISH Refrigerant piping installation WARNING When installing and moving the air conditioner to another...
Installation Manual
Page 35
... or building ventilation system - Adoption of outdoor unit capacity and piping length 3. Total amount of refrigerant in piping work : Prepare for gas leakage) - Limitation in the system Volume of the room at which indoor unit of the least capacity is obtained from the floor (wall mounted type ¡ cassette type) - Selection of air conditioning system: select one of installed HR units x 1.1 lbs + CF(kg(lbs)) (Correction factor...
... or building ventilation system - Adoption of outdoor unit capacity and piping length 3. Total amount of refrigerant in piping work : Prepare for gas leakage) - Limitation in the system Volume of the room at which indoor unit of the least capacity is obtained from the floor (wall mounted type ¡ cassette type) - Selection of air conditioning system: select one of installed HR units x 1.1 lbs + CF(kg(lbs)) (Correction factor...
Installation Manual
Page 44
Electrical Wiring Communication and Power Lines 1) Communication cable • Types : shielding wire CVVS or CPEVS • Use wires of size : over 1.25mm2 • Insulation material : PVC • Maximum allowable temperature: 140°F • Maximum allowable line length: under 300m(984ft) 2) Remote control cable • Types : 3-core cable 3) Simple central control cable • Types : 4-core cable (Shielding wire) • Use wires of size... of operational faults developing due to air conditioner) and signal lines must be carried out by side Current capacity of power line ...
Electrical Wiring Communication and Power Lines 1) Communication cable • Types : shielding wire CVVS or CPEVS • Use wires of size : over 1.25mm2 • Insulation material : PVC • Maximum allowable temperature: 140°F • Maximum allowable line length: under 300m(984ft) 2) Remote control cable • Types : 3-core cable 3) Simple central control cable • Types : 4-core cable (Shielding wire) • Use wires of size... of operational faults developing due to air conditioner) and signal lines must be carried out by side Current capacity of power line ...
Installation Manual
Page 49
....1 No.2 No.3 No.4 No.5 No.6 No.7 No.8 Selection Method for addressing valves of an HR unit (Auto/Manual) Model of HR unit Model of HR unit Valve group setting Valve group setting Valve group setting Use only in factory production (preset to "OFF") Use only in factory production (preset to "OFF") 1) Selection of the method for setup of an HR unit (Auto/Manual) Switch No.1 Off Switch No.1 On Manual Auto Installation Manual 49
....1 No.2 No.3 No.4 No.5 No.6 No.7 No.8 Selection Method for addressing valves of an HR unit (Auto/Manual) Model of HR unit Model of HR unit Valve group setting Valve group setting Valve group setting Use only in factory production (preset to "OFF") Use only in factory production (preset to "OFF") 1) Selection of the method for setup of an HR unit (Auto/Manual) Switch No.1 Off Switch No.1 On Manual Auto Installation Manual 49
Installation Manual
Page 54
... indoor PCB and HR unit PCB is replaced. • Operation error occurs unless power is applied to central control address of indoor unit. • Pipe which is not working. • If you want to change the setting of manual pipe, you want to do auto pipe detection again after auto pipe detection fails, do after reset of outdoor unit by all means. 3) Manual pipe detection • Enter the central control address into each indoor unit using its wired remote control. • Turn...
... indoor PCB and HR unit PCB is replaced. • Operation error occurs unless power is applied to central control address of indoor unit. • Pipe which is not working. • If you want to change the setting of manual pipe, you want to do auto pipe detection again after auto pipe detection fails, do after reset of outdoor unit by all means. 3) Manual pipe detection • Enter the central control address into each indoor unit using its wired remote control. • Turn...
Installation Manual
Page 75
...indicates error number, 3rd LED indicates unit number. Inlet pipe temperature sensor of indoor unit Inlet pipe temperature sensor of indoor unit is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as shown in indoor unit PCB 0 6 - Communication error : outdoor unit ↔ indoor unit Malfunction of drain pump Failing to receive wired remote controller signal in indoor unit PCB 0 4 - Drain pump 0 5 - Communication error: indoor unit When the addressing signal doesn't respond for air condition...
...indicates error number, 3rd LED indicates unit number. Inlet pipe temperature sensor of indoor unit Inlet pipe temperature sensor of indoor unit is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as shown in indoor unit PCB 0 6 - Communication error : outdoor unit ↔ indoor unit Malfunction of drain pump Failing to receive wired remote controller signal in indoor unit PCB 0 4 - Drain pump 0 5 - Communication error: indoor unit When the addressing signal doesn't respond for air condition...
Installation Manual
Page 77
...(B) Fault slave Outdoor Unit Heat 2 Exchanger Temperature Sensor(B) Fault Master Outdoor Unit Heat Exchanger Temperature Sensor(B) open or short slave Outdoor Unit Heat Exchanger Temperature Sensor(B) open or short 5 1 1 Omitting connection of R, S, T power of Master Outdoor unit Omitting connection of R, S, T 2 power of slave outdoor unit Omitting connection of Master outdoor unit Omitting connection of slave outdoor unit 5 1 1 Excessive capacity of indoor units Excessive connection of indoor units compared to capacity of outdoor unit 5 2 1 Communication error : inverter...
...(B) Fault slave Outdoor Unit Heat 2 Exchanger Temperature Sensor(B) Fault Master Outdoor Unit Heat Exchanger Temperature Sensor(B) open or short slave Outdoor Unit Heat Exchanger Temperature Sensor(B) open or short 5 1 1 Omitting connection of R, S, T power of Master Outdoor unit Omitting connection of R, S, T 2 power of slave outdoor unit Omitting connection of Master outdoor unit Omitting connection of slave outdoor unit 5 1 1 Excessive capacity of indoor units Excessive connection of indoor units compared to capacity of outdoor unit 5 2 1 Communication error : inverter...
Installation Manual
Page 80
... if the refrigerant gas leaks in the air. Limiting concentration: 0.028 lb/ft3(R410A) Outdoor unit (No.1 system) Flow of refrigerant Indoor unit Room where refrigerant leaks (Refrigerant of the whole No.1 system flows out.) Checking procedure of lb/ft3 (Freon gas weight per unit air volume) for facilitating calculation. Introduction Though the R410A refrigerant is divided into 2 or more openings (to equip the air conditioner should be...
... if the refrigerant gas leaks in the air. Limiting concentration: 0.028 lb/ft3(R410A) Outdoor unit (No.1 system) Flow of refrigerant Indoor unit Room where refrigerant leaks (Refrigerant of the whole No.1 system flows out.) Checking procedure of lb/ft3 (Freon gas weight per unit air volume) for facilitating calculation. Introduction Though the R410A refrigerant is divided into 2 or more openings (to equip the air conditioner should be...
Installation Manual
Page 82
... heat exchanger by using water 82 Outdoor Unit Selecting the location(Outdoor Unit) 1) If the outdoor unit is installed close to the seaside, direct exposure to the sea wind should be keep more than once/year ) cleaning of the outdoor unit. • It should not be exposed to the sea wind. Sea wind Sea wind 2) In case, to be installed in the seaside installation, please contact LG Electronics for easy air...
... heat exchanger by using water 82 Outdoor Unit Selecting the location(Outdoor Unit) 1) If the outdoor unit is installed close to the seaside, direct exposure to the sea wind should be keep more than once/year ) cleaning of the outdoor unit. • It should not be exposed to the sea wind. Sea wind Sea wind 2) In case, to be installed in the seaside installation, please contact LG Electronics for easy air...