LG Multi V PRHR042A Installation Manual
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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.
For Heat Pump / Heat Recovery system
Original instruction
MFL69717901
Rev.02_111320
Copyright © 2020 LG Electronics Inc. All Rights Reserved.
www.lghvac.com
www.lg.com
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Table of Contents
Related Manuals for LG Multi V PRHR042A
Summary of Contents for LG Multi V PRHR042A
- Page 1 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 www.lghvac.com www.lg.com MFL69717901 Rev.02_111320 Copyright © 2020 LG Electronics Inc. All Rights Reserved.
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Page 2: Tips For Saving Energy
Installation TIPS FOR SAVING ENERGY • Have all electric work done by a licensed electrician according to "Electric Facility Engineering Standard" and "Interior Wire Here are some tips that will help you minimize the power consumption Regulations" and the instructions given in this manual and always when you use the air conditioner. - Page 3 • Do not open the inlet grille of the product during operation. (Do not • Turn on the power at least 6 hours before starting operation. touch the electrostatic filter, if the unit is so equipped.) - Starting operation immediately after turning on the main power - There is risk of physical injury, electric shock, or product failure.
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Page 4: Table Of Contents
TABLE OF CONTENTS INSTALLATION GUIDE AT THE SEASIDE TIPS FOR SAVING ENERGY Model Designation IMPORTANT SAFETY INSTRUCTIONS Airborne Noise Emission INSTALLATION PROCESS OUTDOOR UNITS INFORMATION ALTERNATIVE REFRIGERANT R410A SELECT THE BEST LOCATION INSTALLATION SPACE Air guide work LIFTING METHOD INSTALLATION The location of the Anchor bolts Foundation for Installation Preparation of Piping... -
Page 5: Installation Process
INSTALLATION PROCESS OUTDOOR UNITS INFORMATION CAUTION Indicate clearly who will be responsible for switch setting. Determination of division work • Ratio of the connectable Indoor Units to the Outdoor: 50 ~ Make connection clearly between outdoor, indoor, Preparation of contract drawings remote controller and option. - Page 6 When installing the outdoor unit in a place that is constantly exposed to a 3 Series strong wind like a coast or on a high story of a building, secure a normal 500(19-11/16) fan operation by using a duct or a wind shield. •...
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Page 7: Installation Space
INSTALLATION SPACE In case of obstacles on the discharge side 1. Stand alone installation • The following values are the least space for installation. If any service area is needed for service according to field circumstance, obtain enough service space. •... -
Page 8: Air Guide Work
Air guide work Obstacle height of discharge side is lower than the unit 1. Stand alone installation In case of out door unit is located outdoor cabin of apartment or flats, then the efficiency can drop and system pressure increases thus finally L ≤... -
Page 9: Lifting Method
LIFTING METHOD INSTALLATION • When carrying the suspended, unit pass the ropes under the unit and • Install at places where it can endure the weight and vibration/noise use the two suspension points each at the front and rear. of the outdoor unit. •... -
Page 10: Preparation Of Piping
Ⓐ The corner part must be fixed firmly. Otherwise, the support for the Preparation of Piping installation may be bent. Main cause of gas leakage is defect in flaring work. Carry out correct Ⓑ Get and use M10 Anchor bolt. flaring work in the following procedure. -
Page 11: Plumbing Materials And Storage Methods
CAUTION - Heat insulation material to be prepared: EPDM (Ethylene Propylene Diene Methylene)-over 120 °C [248 °F] the heat-resistance temperature. • Always use a charge hose for service port connection. - Add the insulation over 10 mm [0.39 inch] thickness at high •... -
Page 12: Refrigerant Piping Installation
Nitrogen substitution method ARUB***GSS4 Welding, as when heating without nitrogen substitution a large amount of the oxide film is formed on the internal piping. The oxide film is a caused by clogging EEV, Capillary, oil hole of Refrigerant accumulator and suction hole of oil pump in compressor. Charging Port It prevents normal operation of the compressor. -
Page 13: Installation Procedure For Hr Unit
WARNING • Always careful not to leak the refrigerant during welding. Pipe • The refrigerant generates poisonous gas harmful to human body connection from left if combusted. side Pipe • Do not perform welding in a closed space. connection • Be sure to close the cap of the service port to prevent gas from right side leakage after the work. -
Page 14: Installation Of Zoning Control
Joint Method of HR Unit PRHR042A PRHR022A PRHR032A PRHR043A (Big Duct : ARNU763B8-, ARNU963B8-) HR unit PRHR023A PRHR033A PRHR063A Joint Method is required when the big duct chassis is installed. In Joint PRHR083A Method, two neighboring outlets of one HR unit are linked by Y branch Low pressure pipe and connected to one indoor unit. -
Page 15: Precautions On Pipe Connection / Valve Operation
Caution Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling performance, drip of Use the following materials for refrigerant piping. condensate and other such problems. - Material: Seamless phosphorous deoxidized copper pipe When connecting the refrigerant piping, make sure the service - Wall thickness : Comply with the relevant local and national valves of the Outdoor Unit is completely closed (the factory regulations for the designed pressure 3.8 MPa... - Page 16 WARNING • Always careful not to leak the refrigerant during welding. • The refrigerant generates poisonous gas harmful to human body if combusted. • Do not perform welding in a closed space. • Be sure to close the cap of the service port to prevent gas leakage after the work.
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Page 17: Pipe Connections Between Indoor And Outdoor Unit
PIPE CONNECTIONS BETWEEN Remove leakage prevention cap • Remove the leakage prevention cap attached to the outdoor unit INDOOR AND OUTDOOR UNIT service valve before pipe work. • Proceed the leakage prevention cap removal as follows: - Verify whether the liquid/gas pipes are locked. - Pipe connections can be done on the front side or on the side - Extract remaining refrigerant or air inside using the service port. -
Page 18: Pipe Drawing Out During Single Connection
Pipe Drawing Out during Single connection Refrigerant piping system Method of drawing out pipes on the front side and right side Refrigerant Pipe Connection - Proceed with the pipe work as shown in the below figure for front Example : 12 Indoor Units connected side and right side pipe drawing out. - Page 19 Refrigerant pipe diameter from outdoor unit to first branch. (A) WARNING When the any one (or both) of below conditions are satisfied, the Upward outdoor Pipe diameter diameter of main pipe (A) must be increased according to below unit total capacity table.
- Page 20 Y branch, Header and HR unit connection pattern Pattern 5 Pattern 1 14.5kW 14.5kW 14.5kW 14.5kW (48kBtu/h) (48kBtu/h) (48kBtu/h) (48kBtu/h) Pattern 6 14.5kW 14.5kW 14.5kW 14.5kW (48kBtu/h) (48kBtu/h) (48kBtu/h) (48kBtu/h) • Impossible installation : Head branch pipe → HR unit Pattern 2 7.25kW 7.25kW...
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Page 21: Preparation Work
• Keep the 40m(131ft) distance from the first branch to the farthest Remove leakage prevention cap indoor. • Remove the leakage prevention cap attached to the outdoor unit service valve before pipe work. • Proceed the leakage prevention cap removal as follows: - Verify whether all the pipes are locked. -
Page 22: Refrigerant Piping System
Refrigerant piping system Header Method [Unit:m(ft)] Example : 6 Indoor Units Y branch method connected [Unit:m(ft)] Ⓐ : Outdoor Unit Example : 5 Indoor Units L150 (492) Ⓑ : 1st branch 40 (131) connected Ⓒ : Indoor Units Ⓐ : Outdoor Unit Ⓓ... - Page 23 WARNING CAUTION • It is recommended that difference of piping length for pipes 500mm 500mm • Bending radius should be (19-5/8inch) (19-5/8inch) connected to the Indoor Unit is minimized. Performance at least twice the diameter or more or more difference between Indoor Units may occur. of the pipe.
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Page 24: Refrigerant Charging
Refrigerant charging For Heat Recovery System Installation Ⓐ Manifold Gauge Ⓑ Low pressure side Handle Ⓒ High pressure side Handle ARUB***GSS4 Not used Liquid Pipe (keep closed) Gas pipe Low Pressure gas pipe Liquid pipe WARNING High Pressure gas pipe •... - Page 25 Outdoor unit Y-branches can only be installed in a horizontal or vertical • Header should be insulated with the insulator in each kit. UP configuration. The vertical DOWN configuration is not permitted. • There is no limitation on the joint mounting configuration. •...
- Page 26 Y branch pipe Models Pipe Low-Pressure Vapor Pipe For Heat Recovery System Installation * For more information, refer accessory installation manual. I.D 15.88(5/8) I.D 19.05(3/4) I.D 22.2(7/8) I.D 19.05(3/4) [Unit : mm(inch)] I.D 12.7(1/2) I.D 25.4(1) Models Pipe O.D 19.05(3/4) I.D 28.58(1-1/8) I.D 15.88(5/8) I.D 12.7(1/2)
- Page 27 Models Pipe Models Pipe Low-Pressure Vapor Pipe Gas pipe I.D 22.2(7/8) I.D 19.05(3/4) I.D 34.9(1-3/8) I.D 15.88(5/8) I.D 25.4(1) I.D 19.05(3/4) I.D 12.7(1/2) I.D 34.9(1-3/8) I.D 38.1(1-1/2) I.D 41.3(1-5/8) I.D 28.58(1-1/8) I.D 12.7 I.D 19.05(3/4) (1/2) I.D 15.88(5/8) (3-9/32) I.D 28.58(1-1/8) I.D 38.1(1-1/2) 390(15-11/32) 413(16-1/4)
- Page 28 Header Models Pipe Gas pipe * For more information, refer accessory installation manual. 760(29-29/32) [Unit:mm(inch)] ID 15.88(5/8) ID 12.7(1/2) Models Pipe ID 19.05(3/4) ID 15.88(5/8) Gas pipe 360(14-3/16) 10 branch ID 28.58(1-1/8) ID 25.4(1) ID 22.2(7/8) 120(4-23/32) ID 12.7(1/2) ARBL1010 Liquid pipe ID 12.7(1/2) ID 15.88(5/8)
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Page 29: Distribution Method
Distribution Method Vacuum Mode Horizontal Distribution This function is used for creating vacuum in the system after compressor replacement, ODU parts replacement or IDU addition / replacement. Vacuum mode setting method 3rd main pipe distribution 7-Segment SW01C SW01D (●:confirm) (reset) SW02C SW04C (◀:backward) -
Page 30: Leak Test And Vacuum Drying
WARNING Leak Test and Vacuum drying Use a vacuum pump or Inert(nitrogen) gas when doing leakage test Leak test or air purge. Do not compress air or Oxygen and do not use Leak test should be made by pressurizing nitrogen gas to 3.8 MPa Flammable gases. -
Page 31: Thermal Insulation Of Refrigerant Piping
Thermal insulation of refrigerant piping ARUM***GSS5 Outdoor unit Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat-resistant Vacuum polyethylene, so that no gap is observed in the joint between indoor Close pump unit and insulating material, and insulating materials themselves. -
Page 32: Electrical Wiring
Penetrations Outdoor Unit Inner wall (concealed) Outer wall Outer wall (exposed) Indoor Indoor Unit Unit Remote Remote control control Outdoor Unit Floor (fireproofing) Penetrating portion on fire Roof pipe shaft Indoor Indoor Unit Unit limit and boundary wall Remote Remote control control 2-Core Shield Cable... -
Page 33: Control Box And Connecting Position Of Wiring
Control box and connecting position of wiring Communication and Power Cables - Remove all of the screws at front panel and remove the panel by Communication cable pulling it forward. - Types : shielded wires or unshielded wires - Connect communication cables between outdoor unit and indoor - Cross section : 1.0 ~ 1.5 mm (1.55 ×... -
Page 34: Wiring Of Main Power Supply And Equipment Capacity
Wiring of main power supply and equipment Field Wiring capacity Single outdoor unit - Use a separate power supply for the Outdoor Unit and Indoor Unit. : Single phase of power supply line[L1(L),L2(N)] - Bear in mind ambient conditions (ambient temperature,direct : Communication line (3 line): Wired remote control sunlight, rain water,etc.) when proceeding with the wiring and : Communication line (2 shield line):... - Page 35 Example) Connection of power and communication cable ARUB***GSS4 ARUM***GSS5 5 Ton 3, 4 Ton Right side Front side Right side Front side Main power Terminal block Hold Com- Insulation Main power munication sleeves Terminal cable attachment block Ground wire Insulation Hold Com- sleeves munication...
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Page 36: Checking The Setting Of Outdoor Units
CAUTION Checking the setting of outdoor units Checking according to DIP switch setting Be sure to turn off outdoor unit power before installation. - You can check the setting values of the Master outdoor unit from the 7 segment LED. The DIP switch setting should be changed when the power is OFF. -
Page 37: Switch For Setup Of Hr Unit
Switch for setup of HR Unit Main function of SW02E 2 Series ON S/W Selection Main function of SW02M No.1 Method for pipe detection of an HR Unit (Auto/Manual) No.2 Selection No.3 No. of connected branches Method for addressing valves of an No.1 HR unit (Auto/Manual) No.4... - Page 38 3 Series Setting the Valve Group. 2 Series DIP S/W setting Example Indoor Unit PRHR023A PRHR033A PRHR043A Indoor Unit Not control Indoor Unit Indoor Unit 1 branch Connected 2 branch Indoor Unit Connected No.1, 2 Valve Indoor Unit Large capacity indoor unit Control 3 branch Connected...
- Page 39 SW05M (Rotary S/W for addressing HR unit) 3 Series Main function of SW01D Must be set to '0' when installing only one HR unit. When installing multiple HR units, address the HR units with 1) Selection of the Valve Group Control. sequentially increasing numbers starting from '0'.
- Page 40 SW01C (Rotary S/W for addressing HR unit) Normal setting (Non-Zoning setting) Must be set to '0' when installing only one HR unit. ex) Manual pipe detection of Valve #1, 6. When installing multiple HR units, address the HR units with sequentially increasing numbers starting from '0'.
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Page 41: Automatic Addressing
Automatic Addressing Setting For Heat Recovery Unit (Refer Only Heat Recovery Installation) The address of indoor units would be set by Automatic Automatic pipe detection Addressing Turn No.1 of DIP s/w SW02E of HR unit PCB off. - Wait for 3 minutes after supplying power. Confirm that the setting of No.2, 3 of SW02E corresponds with the (Master and Slave outdoor units, indoor units) type of the valve connection. -
Page 42: Flow Chart Of Auto Pipe Detection Process
WARNING 88' is displayed on 7-SEG of the outdoor • In case that central controller is not installed, firstly set up central unit main PCB controller’s setting to make address setting of indoor units. • In case that central controller is installed, please set central * It is possible to be generated mode control address in wired remote control of indoor unit. -
Page 43: Flow Chart Of Manual Addressing For Pipe Detection
Flow chart of manual addressing for pipe Example of manual valve addressing (Non-Zoning detection setting) (In case that an indoor unit of central control address "11" is connected Execute in case of Auto pipe detection to a valve #1 of an HR unit) failure - Prerequisite for manual valve addressing: central control address of each indoor unit must be preset differently at its wired remote... -
Page 44: Example Of Manual Valve Addressing (Zoning Setting)
Example of manual valve addressing (Zoning Method of checking the pipe detection result setting) at HR unit (In case that an indoor unit of central control address "11" is connected In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit) to a valve #1 of an HR unit Zoning control is connecting 2 or more indoor units at one pipe of HR... -
Page 45: Group Number Setting
Group Number setting Mode Function Option Value Action Remarks Content Display1 Content Display2 Content Display3 Content Display4 Implement Display5 Group Number setting for Indoor Units Change Save in - Confirm the power of whole system(Indoor Unit, Outdoor Unit) is Cool & Heat oFF op1~ Selected the set... -
Page 46: High Static Pressure Compensation Mode (Fn 2)
High Static Pressure Compensation mode (Fn 2) Time Settings Step Judgement Time(Hr) Operation Time(Hr) This function secures the air flow rate of ODU, in case static pressure has been applied like using duct at fan discharge of ODU. 10.5 Static pressure compensation mode setting method Service PCB DIP switch on : No.5 10.5 Select the mode using ‘▶’, ‘◀’... -
Page 47: Snow Removal & Rapid Defrost (Fn 6)
Snow removal & rapid defrost (Fn 6) Target pressure adjusting (Fn 8) Mode setting method Mode setting method Service PCB DIP switch on : No.5 Service PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : Select the mode using ‘▶’, ‘◀’... -
Page 48: Self-Diagnosis Function
Self-Diagnosis Function 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. - Page 49 Display Title Cause of Error Omitting connection of R, S, T power of Outdoor Unit Omitting connection of outdoor unit Excessive capacity of indoor units Excessive connection of indoor units compared to capacity of Outdoor Unit Communication error : inverter PCB → Main PCB Failing to receive inverter signal at main PCB of Outdoor Unit Communication error : indoor unit →...
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Page 50: Caution For Refrigerant Leak
CAUTION FOR REFRIGERANT LEAK Calculate refrigerant concentration The installer and system specialist shall secure safety against leakage Total amount of according to local regulations or standards. replenishedrefrigerant in The following standards may be applicable if local regulations are not refrigerant facility [kg(lbs)] available. - Page 51 INSTALLATION GUIDE AT THE Model Designation SEASIDE Product information CAUTION • Product Name : Air conditioner • Model Name : • Air conditioners should not be installed in areas where corrosive Product Sales Name Model Factory Name gases, such as acid or alkaline gas, are produced. ARUx***ySSz •...
- Page 53 Please call the installing contractor of your product, as warranty service will be provided by them. Service call Number # : (888) LG Canada, (888) 542-2623 CANADA Numéro pour les appels de service : LG Canada, 1-888-542-2623...