ENGLISH РУССКИЙ ЯЗЫК УКРАÏНСЬКА 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. For Heat Pump / Heat Recovery system Original instruction MFL68124509 Rev.01_041319 www.lg.com Copyright © 2017 - 2019 LG Electronics Inc.
ENGLISH 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: • Do not cool excessively indoors. This may be harmful for your health and may consume more electricity. • Block sunlight with blinds or curtains while you are operating the air conditioner. • Keep doors or windows closed tightly while you are operating the air conditioner.
! CAUTION Installation • Always check for gas (refrigerant) leakage after installation or repair of product. - Low refrigerant levels may cause failure of product. • Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. - It may cause a problem for your neighbors. • Keep level even when installing the product. - To avoid vibration or water leakage. • Do not install the unit where combustible gas may leak.
ENGLISH TABLE OF CONTENTS 2 2 5 5 5 5 7 TIPS FOR SAVING ENERGY IMPORTANT SAFETY INSTRUCTIONS INSTALLATION PROCESS OUTDOOR UNITS INFORMATION ALTERNATIVE REFRIGERANT R410A SELECT THE BEST LOCATION INSTALLATION SPACE 7 Individual Installation 7 8 LIFTING METHOD INSTALLATION 8 8 9 10 The location of the Anchor bolts Foundation for Installation Preparation of Piping Plumbing materials and storage methods 11 REFRIGERANT PIPING INSTALLATION [For Heat Pump System Installation] 11 Precautions on Pipe con
Determination of division work Preparation of contract drawings Sleeve and insert work Indicate clearly who will be responsible for switch setting. Make connection clearly between outdoor, indoor, remote controller and option.
• Do not use unit under any special environment where oil, steam and sulfuric gas exist. More than 100 (3-15/16) (Servicing space) • It is recommended to fence round the outdoor unit in order to prevent any person or animal from accessing the outdoor unit. • If installation site is area of heavy snowfall, then the following directions should be observed. - Make the foundation as high as possible. - Fit a snow protection hood.
Individual Installation During the installation of the unit, consider service, inlet, and outlet acquire the minimum space as shown in the figures below.
CAUTION Foundation for Installation Outdoor units should not be supported only by the corner supports. m 0m st 10 ch) a e l At /16 in 5 (3-1 mm 00 ast 1 h) At le /16 inc 100 mm 5 ast h) (3-1 At le /16 inc 5 (3 1 Center of the Unit mm 00 ast 1 inch) e l t A /16 5 (3-1 mm 00 ast 1 h) m At le /16 inc t 100m 5 (3-1 At leas 6 inch) 5/1 (3-1 Center of the Unit The location of the Anchor bolts Ⓐ The corner part must be fixed firmly. Otherwise, the support for the installation may be bent.
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. Pipe size [mm (inch)] Tightening Torque N.m (lbs.ft) A [mm (inch)] Ø 9.52 (3/8) 38±4 (28±3.0) 12.8 (0.5)~13.2 (0.52) Flare shape 90° ±2 45 ° A Cut the pipes and the cable - Use the accessory piping kit or the pipes purchased locally. - Measure the distance between the indoor and the outdoor unit. - Cut the pipes a little longer than measured distance. - Cut the cable 1.5 m (4.
Precautions in high humidity circumstance: This air conditioner has been tested according to the "ISO Conditions with Mist" and confirmed that there is not any default. However, if it is operated for a long time in high humid atmosphere (dew point temperature: More than 23 °C [73.4 °F]), water drops are liable to fall.
Connection of Outdoor units When installing ODU series, refer below picture. For Heat Pump System Installation A B (Master) Precautions on Pipe connection / Valve operation C (Slave 1) D (Slave 2) (Slave 3) Pipe connection is done by connecting from the end of the pipe to the branching pipes, and the refrigerant pipe coming out of the outdoor unit is divided at the end to connect to each indoor unit.
ENGLISH 1 Use the following materials for refrigerant piping. 9 The Multi V will stop due to an abnormality like excessive or - Material: Seamless phosphorous deoxidized copper pipe - Wall thickness : Comply with the relevant local and national regulations for the designed pressure 3.8 MPa (551 psi). We recommend the following table as the minimum wall thickness. Outer diameter 6.35 9.52 12.7 15.88 19.05 22.2 25.4 28.58 31.8 34.9 38.1 41.3 44.45 53.
Outdoor units Precautions on Pipe connection / Valve operation Model Low Pressure Gas Pipe I.D 22.2 O.D 28.58 Pipe connection is done by connecting from the end of the pipe to the branching pipes, and the refrigerant pipe coming out of the outdoor unit is divided at the end to connect to each indoor unit. Flare connection for the indoor unit, and welding connection for the outdoor pipe and the branching parts. O.D 15.88 I.D 34.9 I.D 28.58 C 2 Unit ARCNB21 I.D 19.05 I.D 15.88 I.D 28.58 O.
ENGLISH Installation of Outdoor Unit, HR Unit, Indoor Unit Refrigerant Pipe Joint Method of HR Unit (Big Duct : ARNU76GB8-, ARNU763B8-, ARNU96GB8-, ARNU963B8-) 3 pipes are connected to the HR unit from the outdoor unit, classified into liquid pipe, low pressure gas pipe and high pressure gas pipe depending on status of refrigerant passing through the pipe. You must connect 3 pipes from outdoor unit to HR unit.
ENGLISH [Reducers for indoor unit and HR unit] Unit : mm (inch) A Gas pipe Models Liquid pipe High pressure Indoor unit reducer Low pressure – OD 9.52(3/8) Ø 6.35(1/4) OD 15.88(5/8) PRHR022 PRHR022A OD 19.05(3/4) Ø 15.88(5/8) Ø 12.7(1/2) Ø 12.7(1/2) A To Outdoor Unit B Sealed Piping OD 22.2(7/8) Ø 19.05(3/4) Ø 15.88(5/8) OD 9.52(3/8) Ø 6.35(1/4) OD 12.7(1/2) Ø 9.52(3/8) OD 15.88(5/8) Ø 12.7(1/2) HR unit reducer A PRHR032, PRHR042 PRHR032A, PRHR042A OD 22.2(7/8) Ø 19.05(3/4) Ø 15.
ENGLISH PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT - Pipe connections can be done on the front side or on the side according to the installation environments. - Be sure to let 0.2 kgf/cm2 (2.8 psi) Nitrogen flow in the pipe when welding. - If Nitrogen was not flown during welding, many oxidized membranes may form inside the pipe and disturb the normal operations of valves and condensers.
Y branch method Remove Knock Out for the pipes Refrigerant piping system 1 Outdoor Units Y branch method Indoor Unit H 110 m [361 ft] L 150 m [492 ft] (200 m [656 ft]) h 40 m (131 ft) 10 m or less ODU Capacity Master ≥ Slave 1 ≥ Slave 2 ≥ Slave 3 Slave 3 Slave 2 Slave 1 Master L 150 m [492 ft] (200 m [656 ft]) l 40 m [131 ft] (90 m [295 ft] h * : See Table 4 Header Method h * : See Table 4 L 150 m [492 ft] (200 m [656 ft]) l 40 m [131 ft] (90m [295 ft]) h * : See Table 4 Header Method H 11
Slave 1 Master Slave 2 Slave 3 (Table 2) Refrigerant pipe diameter from outdoor unit to first branch. (A) Pipe diameter when pipe ODU length is < 90 m (295 ft) (Standard) capacity (hp) Liquid Pipe Gas Pipe mm (inch) mm (inch) Pipe diameter when pipe Pipe diameter when height length is ≥ 90 m (295 ft) differential (ODU↔IDU) is > 50 m (164 ft) Liquid Pipe mm (inch) Gas Pipe mm (inch) Liquid Pipe mm (inch) Gas Pipe mm (inch) H1 8 Ø 9.52 (3/8) Ø 19.05 (3/4) Ø 12.7 (1/2) Ø 22.2 (7/8) Ø 12.
WARNING ! • In case of pipe diameter B connected after first branch is bigger than the main pipe diameter A, B should be of the same size with A. Ex) In case indoor unit combination ratio 120 % is connected to 24HP(67.2 kW) outdoor unit. 1) Outdoor unit main pipe diameter A : Ø 34.9(1-3/8)(Gas pipe), Ø 15.88(5/8)(liquid pipe) 2) Pipe diameter B after first branch according to 120 % indoor unit combination(80.6kW) : Ø 34.9(1-3/8)(gas pipe), Ø 19.
If the main pipe is higher than the outdoor units, oil is accumulated in the outdoor unit. - When connecting the pipes between the outdoor units, the accumulation of oil in the slave outdoor unit should be avoided. Otherwise, the unit may not operate properly. Oil Trap (Example 1) Toward indoor unit If there are differences in the height between the outdoor units, oil is accumulated in the lower outdoor unit.
ENGLISH Branch pipe Fitting • Header should be insulated with the insulator in each kit. Y branch B A Insulate the header using the insulation material attached to the branch pipe kit as shown in the figure. Ⓐ To Branch Piping or Indoor Unit Ⓑ To Outdoor Unit • Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.
ENGLISH Distribution Method Header [Unit:mm(inch)] Models Gas pipe Liquid pipe 360 4 branch ARBL054 ID 9.52(3/8) ID 9.52(3/8) ID 9.52(3/8) ID 9.52(3/8) ID 6.35(1/4) ID 12.7 ID 15.88 120 ID 15.88 120(4-23/32) ID 6.35(1/4) ID 9.52(3/8) 9.52(3/8) ID9.52(3/8) 9.52(3/8) IDID9.52(3/8) IDID9.52(3/8) ID ID 9.52(3/8) 9.52(3/8) ID 9.52(3/8) 150 540 ID 9.52(3/8) Slave 3rd main pipe distribution Master 2nd 1st 540(21-1/4) 120 120(4-23/32) ID 12.7 ID 6.35(1/4) ID 12.7 ID 15.88 ID 15.
Leak Test and Vacuum drying This function is used for creating vacuum in the system after compressor replacement, ODU parts replacement or IDU addition/replacement. Leak test Leak test should be made by pressurizing nitrogen gas to 3.8 MPa(38.7 kgf/cm2). If the pressure does not drop for 24 hours, the system passes the test. If the pressure drops, check where the nitrogen leaks. For the test method, refer to the following figure. (Make a test with the service valves closed.
Series Installation (Heat Pump) ! Master outdoor unit Close Close Close Close Gas pipe Liquid pipe Gas pipe No use (closed) Close Close Liquid side Indoor unit Scale Use a graviometer. (One that can measure down to 0.1 kg (0.22 lbs)). If you are unable to prepare such a high-precision gravimeter you may use a charge cylinder.
The amount of Refrigerant For Heat Recovery System Installation Ⓐ Manifold Gauge Ⓑ Low pressure side Handle Ⓒ High pressure side Handle The calculation of the additional charge should take into account the length of pipe and CF(correction Factor) value of indoor unit. Additional charge(kg) = Total liquid pipe : Ø 25.4 mm (1.0 inch) × 0.480 kg/m (0.323 lbs/ft) + Total liquid pipe : Ø 22.2 mm (7/8 inch) × 0.354 kg/m (0.238 lbs/ft) + Total liquid pipe : Ø 19.05 mm (3/4 inch) × 0.266 kg/m (0.
ENGLISH Thermal insulation of refrigerant piping Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat-resistant polyethylene, so that no gap is observed in the joint between indoor unit and insulating material, and insulating materials themselves. When insulation work is insufficient, there is a possibility of condensation drip, etc. Pay special attention to insulation work to ceiling plenum.
Preparation Work - Use Knock Outs of Base Pan of the outdoor unit for Left/Right or Bottom pipe drawing outs. Method of drawing out pipes on the front side - Proceed with the pipe work as shown in the below figure for front side pipe drawing out.
ENGLISH Refrigerant pipe diameter from branch to branch (B, C, D) Refrigerant piping system 4 Outdoor Units Example : 12 Indoor Units connected Ⓐ : Outdoor Unit Ⓑ : Y branch Ⓓ : Indoor Unit Ⓔ : Connection branch pipe between Outdoor units : ARCNB41 Ⓕ : Connection branch pipe between Outdoor units : ARCNB31 Ⓖ : Connection branch pipe between Outdoor units : ARCNB21 Ⓗ : Header Ⓘ : HR Unit ! Slave 3 A4 Slave 2 A3 WARNING * : Serial connection of HR units : Capacity sum of indoor units ≤ 192.
Pattern 3 Pipe diameter when pipe length is ≥ 90 m (295 ft) or when height differential (ODU↔IDU) is > 50 m (164 ft) Standard Pipe Diameter ODU. Capacity (hp) ENGLISH Refrigerant pipe diameter from outdoor unit to first branch. (A) pressure High pressure Liquid Pipe Low pressure High pressure Liquid Pipe Low gas pipe gas pipe gas pipe gas pipe mm (inch) mm mm (inch) (inch) mm (inch) mm (inch) mm (inch) 8 Ø 9.52 (3/8) Ø 19.05 (3/4) Ø 15.88 (5/8) Ø 12.7 (1/2) Not increased Not increased 10 Ø 9.
ELECTRICAL WIRING * HR2 - Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company. HR3 A HR1 1 2 48 k 48 k 3 4 5 6 48 k 48 k 48 k 48 k ! • * : Serial connection of HR units : Capacity sum of indoor units ≤ 56.
Indoor Unit Indoor Unit Indoor Unit Remote control Indoor Unit Remote control Remote control Remote control Master Slave 1 Slave 2 Master Slave Indoor Unit Indoor Unit Indoor Unit Remote control Remote control Remote control ! Master Slave 1 Slave 2 Indoor Unit Indoor Unit Remote control Remote control Master Slave 1 Slave 2 Indoor Unit Indoor Unit Remote control Remote control Indoor Unit Remote control CAUTION • Use the 2-core shielded wires for communication cables.
ENGLISH Control box and connecting position of wiring Communication and Power Cables - Remove all of the screws at front panel and remove the panel by pulling it forward. - Connect communication cable between main and sub outdoor unit through the terminal block. - Connect communication cables between outdoor unit and indoor units through the terminal block. - When the central control system is connected to the outdoor unit, a dedicated PCB must be connected between them.
Point for attention regarding quality of the public electric power supply - Use a separate power supply for the Outdoor Unit and Indoor Unit. - Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections. - The cable size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker taking into account the line voltage drops. Make sure the power-supply voltage does not drop more than 10 %.
ENGLISH WARNING ! ! • Indoor Unit ground wires are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe). • Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.
ENGLISH Example) Connection of power and communication cable (UXA) Front Side Bottom Side Main power terminal block Ground wire Main power terminal block When connecting Main power lines / Ground wire from left side When connecting Communication wires / Ground wire from front guide panel Ground wire Gap : Over 50 mm(1.97’’) Gap : Over 50 mm(1.
ENGLISH Quick control Setting In the factory setting, main PCB DIP switch setting is all “OFF”. - Check and make sure that all the indoor unit model name are ARNU******4. - Change the main PCB DIP switch No. 3 “OFF → ON” like below picture. - Push the reset button.
Models (Unit: mm [inch]) Low pressure Gas pipe I.D 22.2(7/8) 1 2 1 2 I.D 25.4(1) 3 4 1 2 3 I.D 19.05(3/4) 1 (For 3 branches) PRHR032 PRHR032A (For 4 branches) PRHR042 PRHR042A Initial Setting I.D 9.52(3/8) 3 80(3-5/32) 70(2-3/4) 321(12-5/8) 332(13-1/16) I.D 25.4(1) 110(4-11/32) I.D 22.2(7/8) I.D 15.88(5/8) 2 I.D 19.05(3/4) I.D 15.88 96 I.D 22.2(7/8) (5/8) (3-25/32) I.D 12.7(1/2) 74 I.D 9.52(3/8) I.D 6.35(1/4) (2-29/32) 3 I.D 22.2(7/8) I.D 28.58(1-1/8) O.D 25.4(1) O.D 19.
ENGLISH S/W No. No.1 No.2 No.3 No.4 Setup Manual addressing of valve #1 Manual addressing of valve #2 Manual addressing of valve #3 Manual addressing of valve #4 SW03M SW03M Increase in the digit of 10 of valve address SW04M SW04M Increase in the last digit of valve address SW01M The Procedure of Automatic Addressing Power On Waiting 3 minutes Press RED Button for 5 s.
Automatic pipe detection 1 Turn No.1 of DIP s/w SW02M of HR unit PCB off. 2 Confirm that the setting of No.2, 3 of SW02M corresponds with the Type of the valve connection. 3 Reset the power of HR unit PCB 4 Master Out door unit PCB DIP switch on : No.5 5 Select the mode using ‘▶’, ‘◀’ Button : “Idu” Push the ‘●’ button 6 Select the “Id 5” function using ‘▶’, ‘◀’ Button :“Ath” or “”Atc” Push the ‘●’ button.
ENGLISH Example of manual valve addressing (Zoning setting) DIP-SW01 7-Segment SW04C (X : cancel) SW03C (ȯ: forward) SW02C (ȭ: backward) SW01C (Ɨ: Confirm / Automatic Addressing) SW01D (reset) Flow chart of manual addressing for pipe detection Execute in case of Auto pipe detection failure Wait for about 5 minutes. Turn No.1 of SW02M of HR unit PCB on. The number of the indoor units connected is displayed. Ex) HR र The number of connected indoor units Reset the power of HR unit PCB.
Group Number setting (In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit) Group Number setting for Indoor Units - Confirm the power of whole system(Indoor Unit, Outdoor Unit) is OFF, otherwise turn off. - The communication cables connected to CEN.A and CEN.B terminal should be connected to central control of Outdoor Unit with care for their polarity (A-A, B-B). - Turn the whole system on.
ENGLISH Optional Mode Selection Content FDD Display (◎) Fdd Function Selection Content Automatic Refrigerant Charging (Cooling) Automatic Refrigerant Charging (Heating) Refrigerant Amount Check (Cooling) Refrigerant Amount Check (Heating) Automatic system check mode(cooling or heating) All IDU operation (Cooling) All IDU operation (Heating) Cool & Heat Selector High Static Pressure Compensation mode Night Low Noise mode Overall Defrost mode ODU address setting Snow Removal & Rapid Defrost Airflow A
Time Settings Step op1 op2 op3 op4 op5 op6 op7 op8 op9 op10 op11 op12 This function secures the air flow rate of ODU, in case static pressure has been applied like using duct at fan discharge of ODU. Static pressure compensation mode setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : “Func” Push the ‘●’ button Select the Function using ‘▶’, ‘◀’ Button : “Fn2” Push the ‘●’ button Judgment Time(Hr) Operation Time(Hr) 8 9 6.5 10.5 5 12 8 9 6.5 10.5 5 12 8 9 6.
ENGLISH CAUTION ! Target pressure adjusting • Ask an authorized technician to setting a function. • If use a function, first install a Central controller. Snow removal & rapid defrost Mode setting method Mode setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : “Func” Push the ‘●’ button Select the Function using ‘▶’, ‘◀’ Button : “Fn8” Push the ‘●’ button Master unit PCB DIP switch on : No.
Compressor Max. Frequency Limit Target low pressure will change according to ODU temperature during the cooling operation. Mode setting method Mode setting method Master unit PCB DIP switch on : No.5 Master unit PCB DIP switch on : No.
ENGLISH MAX. RPM Limit Setting Chassis Fan MAX.
CAUTION Base pan Heater operation • Ask an authorized technician to setting a function. • If do not use a function, set an off-mode. • If use a function, capacity may go down. Power Consumption Display on wired remote controller Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : “Func” Push the ‘●’ button Select the Function using ‘▶’, ‘◀’ Button : “Fn23” Push the ‘●’ button Mode setting method Master unit PCB DIP switch on : No.
Error Indicator - This function indicates types of failure in self-diagnosis and occurrence of failure for air condition. - Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as shown in the table. - If more than two troubles occur simultaneously, lower number of error code is first displayed. - After error occurrence, if error is released, error LED is also released simultaneously.
Outdoor unit related error Title Cause of Error 2 6 * Outdoor Unit Inverter Compressor Start Failure The first start failure by Outdoor Unit Inverter Compressor abnormality or Compressor locked 2 9 * Outdoor Unit Inverter Compressor Over Current Outdoor Unit Inverter Compressor Fault OR Drive Fault 3 2 * Outdoor Unit Inverter Compressor1 High Discharge Temperature Outdoor Unit Inverter Compressor1 High Discharge Temperature 3 3 * Outdoor Unit Inverter Compressor2 High Discharge Temp
ENGLISH Network error HR Unit related error Outdoor unit related error Display Title Cause of Error 1 0 7 * Outdoor Unit Fan DC Link Low Voltage Error Outdoor Unit Fan DC Link Input Voltage is under 380 V 1 1 3 * Outdoor Unit Liquid pipe Temperature Sensor Error Liquid pipe temperature sensor of Outdoor Unit is open or short 1 1 4 * Outdoor Unit Subcooling Inlet Temperature Sensor Error Outdoor Unit Subcooling Inlet Temperature Sensor Error 1 1 5 * Outdoor Unit Subcooling Outl
Calculate refrigerant concentration The installer and system specialist shall secure safety against leakage according to local regulations or standards. The following standards may be applicable if local regulations are not available.
ENGLISH INSTALLATION GUIDE AT THE SEASIDE ! CAUTION • 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. It can result corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
ООО «ЛГ Электроникс РУС» 143160, РФ, Московская область, Рузский район, СП Дороховское, 86-й км. Минское шоссе, д.9. [Manufacturer] LG Electronics Inc.
