LG Multi V Water V ARWM072CAS5 Installation and operation manual
ENGINEERING MANUAL
Variable Refrigerant Flow Water
Source Outdoor Units
6.0 to 48.0 Tons
For continual product development, LG Electronics Canada Inc. reserves the right to change specifications without notice.
© LG Electronics Canada Inc.
This document, as well as all reports, illustrations, data, information,
and other materials are the property of LG Electronics Canada, Inc., and are
disclosed by LG Electronics Canada, Inc. only in confidence.
This document is for design purposes only.
A summary list of safety precautions is on page 3.
To access additional technical documentation such as submittals, indoor
unit engineering manuals, installation, service, product data performance,
general best practice, and building ventilation manuals, as well as white
papers, catalogs, LATS software programs, and more, visit www.lgvrf.ca.
TABLE OF CONTENTS
TABLE OF SYMBOLS
PROPRIETARY DATA NOTICE
DANGER
This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
This symbol indicates situations that may result in equipment or property damage accidents only.
This symbol indicates an action that must not be performed.
Unit Nomenclature........................................................................................................................................................................................ 4
LG Air Conditioner Technical Solution (LATS).........................................................................................................................................5-6
Refrigerant Charge Worksheet..................................................................................................................................................................... 7
Water Source Unit Product Data .............................................................................................................................................................8-66
Mechanical Specifications...................................................................................................................................................................... 9-10
Product Features and Benefits............................................................................................................................................................. 11-12
General Data ....................................................................................................................................................................................... 13-15
Electrical Data .......................................................................................................................................................................................... 16
Connection Limitations.............................................................................................................................................................................. 17
Dimensions.......................................................................................................................................................................................... 18-20
Wiring Diagrams ....................................................................................................................................................................................... 21
Refrigerant Flow Diagrams................................................................................................................................................................... 22-29
Acoustic Data ...................................................................................................................................................................................... 30-32
Head Loss by Water Flow ......................................................................................................................................................................... 33
Accessories ......................................................................................................................................................................................... 34-40
Electrical Connections .......................................................................................................................................................................... 41-44
System for Heat Pump Configuration ........................................................................................................................................................ 42
System for Heat Recovery Configuration................................................................................................................................................... 43
DIP Switch Settings For Use With Gen 4 Indoor Units............................................................................................................................... 44
Water Loop Circuit Design .................................................................................................................................................................... 45-57
Water Design Guide............................................................................................................................................................................. 46-49
Water Circuit Installation ...................................................................................................................................................................... 50-57
Piping Limitations and Placement Considerations.............................................................................................................................. 58-74
Piping Limitations................................................................................................................................................................................. 59-68
Refrigerant Piping for Separated Water Source Units........................................................................................................................... 69-70
Placement Considerations for Water Source Unit(s)...................................................................................................................................71
Transporting / Lifting Water Source Unit(s).................................................................................................................................................72
Installation Considerations................................................................................................................................................................... 73-74
4 | INTRODUCTION INTRODUCTION |5
Introduction
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
Water Source Units
ARW M072 C A S
Generation
5 = Fifth
Airflow Configuration
A = Not Applicable
T = Top Discharge
Electrical Ratings
C = 575V/60Hz/3Phase
Capacity (Mbh)
Type
M = Inverter Heat Pump & Heat Recovery
Family
ARW = MULTI V Water V Water Source Unit (Refrigerant R410A)
5
System Efficiency
E = High Efficiency
S = Standard Efficiency
072 = 72
096 = 96
121 = 120
144 = 144
192 = 192
240 = 240
288, 289 = 288
336, 337 = 336
432 = 432
480 = 480
576 = 576
UNIT NOMENCLATURE
LG Air Conditioner Technical Solution (LATS) Software
A properly designed and installed refrigerant piping system is critical to the optimal performance of LG air-conditioning systems. To assist
engineers, LG offers, free of charge, LG Air Conditioner Technical Solution (LATS) software—a total design solution for LG air conditioning
systems.
To reduce the risk of designing an improper applied system or one that will not operate correctly, LG requires that LATS software be used on all
projects.
Formats
LATS is available to LG customers in three user interfaces: LATS HVAC, LATS CAD2, and LATS REVIT. All three LATS formats are available
through an LG Sales Representative.
LATS HVAC is a Windows®-based application that aids engineers in designing LG Variable Refrigerant Flow (VRF), Multi F / Multi F MAX,
Single-Zone, and Energy Recovery Ventilator (ERV) systems.
*Windows®is a registered mark of Microsoft®Corporation.
LATS CAD2 combines the LG LATS program with AutoCAD®
software**. It permits engineers to layout and validate LG Multi V
Variable Refrigerant Flow (VRF), Multi F / Multi F MAX, Single-Zone,
and Energy Recovery Ventilator (ERV) systems directly into CAD
drawings.
LATS Revit integrates the LG LATS program with Revit®software**.
It permits engineers to layout and validate Multi V VRF systems
directly into Revit drawings.
**AutoCAD®and Revit®are both registered marks of Autodesk, Inc.
Features
All LG product design criteria have been loaded into the program,
making LATS simple to use: double click or drag and drop the com-
ponent choices. Build systems in Tree Mode where the refrigerant
system can be viewed. Switch to a Schematic diagram to see the electrical and communications wiring.
LATS software permits the user to input region data, indoor and outdoor design temperatures, modify humidity default values, zoning, specify
type and size of outdoor units and indoor units, and input air flow and external static pressure (ESP) for ducted indoor units.
The program can also do the following:
LG AIR CONDITIONER
TECHNICAL SOLUTION (LATS)
• Import building loads from a separate Excel file.
• Present options for outdoor unit auto selection.
• Automatically calculate component capacity based on design
conditions for the chosen region.
• Verify if the height differences between the various system
components are within system limits.
• Provide the correct size of each refrigerant piping segment and LG
Y-Branches and Headers.
• Adjust overall piping system length when elbows are added.
• Check for component piping limitations and flag if any parameters
are broken.
• Factor operation and capacity for defrost operation.
• Calculate refrigerant charge, noting any additional trim charge.
• Suggest accessories for indoor units and outdoor units.
• Run system simulation.
Features depend on which LATS program is being used, and the type of system being designed.
Figure 1: Example of LATS CAD2.
For Heat Recovery Unit information, refer to the applicable Engineering Manual on www.lgvrf.ca
6 | INTRODUCTION INTRODUCTION |7
Introduction
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
LATS Generates a Complete Project Report
LATS software also generates a report containing project design parameters, cooling and heating design data, system component perfor-
mance, and capacity data. The report includes system combination ratio and refrigerant charge calculations; and provides detailed bill of
material, including outdoor units, indoor units, control devices, accessories, refrigerant pipe sizes segregated by building, by system, by pipe
size, and by pipe segments. LATS can generate an Excel GERP report that can imported into the LG SOPS pricing and ordering system.
Proper Design to Install Procedure
LG encourages a two report design-to-install-procedure. After the design engineer determines building / zone loads and other details, the
engineer opens the LATS program and inputs the project’s information. When the design is complete, the “Auto Piping” and “System Check”
functions must be used to verify piping sizes, limitations, and if any design errors are present. If errors are found, engineers must adjust the
design, and run Auto Piping and System Check again. When the design passes the checks, then the engineer prints out a project “Shop
Drawing” (LATS Tree Diagram) and provides it to the installing contractor. The contractor must follow the LATS Tree Diagram when building
the piping system, but oftentimes the design changes on the building site:
• Architect has changed location and/or purpose of room(s).
• Outdoor unit cannot be placed where originally intended.
• Structural elements prevent routing the piping as planned.
• Air conditioning system conflicts with other building systems (plumbing, gas lines, etc.).
The contractor must mark any deviation from the design on the Shop Drawing, including as-built straight lines and elbows. This “Mark Up”
drawing must be returned to the design engineer or Rep, who must input contractor changes into the LATS file. (Copy the original LATS soft-
ware file, save and rename as a separate file, and modify all piping lengths by double-clicking on each length and editing information.) Like
the shop drawing, the Auto Piping and System Check must also be run on this new “As Built” drawing. The design engineer or Rep must then
provide the final As Built file to the contractor. The Mark Up version must be compared to the As Built version for:
• Differences in pipe diameter(s). If incorrect diameters have been installed, the piping must be changed out. If pipe diameters have changed,
check to see if Y-Branches will also need to be changed.
• Changes to outdoor unit and indoor unit capacities. Capacities changes may impact line length changes.
• Additional refrigerant charge quantity (“Trim Charge”). Trim charge will change if piping lengths and diameters change. The As Built version
must reflect installed piping lengths to ensure correct trim charge.
All documents submitted by the contractor, as well as the Shop Drawing and the As Built Drawing files must be provided for commissioning
purposes. Model and serial numbers for all system components must also be submitted. If the steps previously detailed are not followed,
and all documents are not provided to the commissioning agent, the project runs the risk of not being commissioned and voiding any limited
warranty LG offers on the equipment.
LG AIR CONDITIONER
TECHNICAL SOLUTION (LATS) System R410A Refrigerant Charge Calculator (lbs.)
REFRIGERANT CHARGE WORKSHEET
1CF (Ref.) = Correction Factor for Refrigerant Charge. 2For refrigerant charge purposes, consider only the liquid line; ignore the vapor line(s).
System Tag or ID:
Job Name: __________________________________________
Project Manager: ____________________________________ Date: ______________
Line # Description Chassis I.D. Size Quantity CF (Ref.)1Total (lbs.)
1 Linear feet of 1/4" liquid line tubing2—— 0.015
2 Linear feet of 3/8" liquid line tubing2—— 0.041
3 Linear feet of 1/2" liquid line tubing2—— 0.079
4 Linear feet of 5/8" liquid line tubing2—— 0.116
5 Linear feet of 3/4" liquid line tubing2—— 0.179
6 Linear feet of 7/8" liquid line tubing2—— 0.238
7 Linear feet of 1" liquid line tubing2—— 0.323
8 Standard + Art Cool Mirror SJ, SK 5k to 15k 0.53
9 Standard + Art Cool Mirror SJ, SK 18k to 24k 0.62
10 Standard SV 30k to 36k 1.01
11 Art Cool Gallery SF 9k to 12k 0.22
12 1-Way Cassette TU 7k to 12k 0.44
13 1-Way Cassette TT 18k to 24k 0.64
14 2-Way Cassette TS 18k to 24k 0.75
15 4-Way 2' x 2' Cassette TR 5k to 7k 0.40
16 4-Way 2' x 2' Cassette TR 9k to 12k 0.55
17 4-Way 2' x 2' Cassette TQ 15k to 18k 0.71
18 4-Way 3' x 3' Cassette TN 7k to 24k 0.88
19 4-Way 3' x 3' Cassette TM 28k to 36k 1.08
20 4-Way 3’ x 3’ Cassette TM 42k to 48k 1.41
21 High Static Ducted M1 7k to 24k 0.57
22 High Static Ducted M2 7k to 24k 0.77
23 High Static Ducted M2 28k to 42k 1.15
24 High Static Ducted M3 28k to 54k 1.35
25 High Static Ducted B8 36k to 96k 2.20
26 Low Static Ducted, Low Static Ducted Bottom Return L1 5k to 9k 0.31
27 Low Static Ducted, Low Static Ducted Bottom Return L2 12k to 18k 0.42
28 Low Static Ducted, Low Static Ducted Bottom Return L3 21k to 24k 0.55
29 Vertical / Horizontal Air Handling Unit NJ 12k to 30k 1.04
30 Vertical / Horizontal Air Handling Unit NJ 36k 1.57
31 Vertical / Horizontal Air Handling Unit NK 42k to 54k 2.00
32 Floor Standing CE (U) 7k to 15k 0.37
33 Floor Standing CF (U) 18k to 24k 0.82
34 HRU: PRHR022A/023A, 032A/033A, 042A/043A, 063A, 083A —— 1.1
35 TOTAL SYSTEM CHARGE
Figure 2: Example of LATS Tree Diagram
WSU PRODUCT DATA | 9
Water Source Unit Product Data
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
WATER SOURCE
UNIT PRODUCT
DATA
Mechanical Specifications on page 9
Product Features and Benefits on page 11
General Data on page 13
Electrical Data on page 16
Connection Limitations on page 17
Dimensions on page 18
Wiring Diagrams on page 21
Refrigerant Flow Diagrams on page 22
Acoustic Data on page 30
Head Loss by Water Flow on page 33
Accessories on page 34
MECHANICAL SPECIFICATIONS
General
An LG Multi V Water V 575V variable refrigerant flow (VRF) water source unit (WSU) oper-
ates as a Heat Pump system or a Heat Recovery System. Single, dual, or triple frame outdoor
unit combinations are connected to indoor units with a single refrigerant piping system using
factory designed and supplied Y-branches, Headers, and/or Heat Recovery Units and have
integrated controls.
The system is capable of being designed for minimum piping and maximum design flexibility.
Each Heat Recovery Unit piping port is independently capable of operating in either heating
or cooling mode regardless of the mode of other piping ports on the same heat recovery unit
or in the system. The Heat Recovery Unit is capable of changing mode of individual indoor
units or zones (cooling to heating or heating to cooling) within a maximum time frame of three
(3) minutes to ensure indoor temperature can be properly maintained.
LG components are manufactured in a facility meeting International Organization for Stan-
dardization (ISO) 9001 and ISO 14001 standards. ISO 9001 defines quality management and
ISO 14001 defines environmental management. The units are listed by Intertek Electrical
Testing Laboratories (ETL) and bear the ETL label. Wiring in these units are in accordance
with the National Electrical Code (NEC).
Temperature Ranges
Heat Pump Configuration
In Heat Pump conguration, the system can operate in heating only mode with an entering water
temperature (EWT) of 14°F to +113°F. Heat pump units can operate in cooling only mode with an
EWT of 23°F to +113°F.
Heat Recovery Configuration
In Heat Recovery conguration, the system can operate in heating only mode with an entering water temperature (EWT) of 14°F to +113°F. Heat
recovery units can operate in cooling only mode with an EWT of 23°F to +113°F.
Casing / Frame
Multi V Water V 575V units are constructed with galvanized steel, bonderized and finished with powder coat baked enamel paint. Each frame
has a removable inspection panel to allow access to service tool connection, DIP switches, auto addressing, and error code display without
removing the entire front panel. The entire front panel of the WSU is removable for maintenance.
WSU frames are completely factory assembled, piped and wired. Dual and triple frame WSUs must be field piped with factory designed and
supplied Y-branch kits to manifold them together into a single refrigerant circuit.
Refrigerant System
The refrigeration system is a single refrigeration circuit using R410A refrigerant. The WSU is provided with factory-installed components
including a refrigerant strainer, check valves, oil separator, accumulator, hot gas bypass valve, four-way reversing valve, electronic con-
trolled expansion valve (EEV), high and low side charging ports, high pressure safety switch, service valves, and interconnecting piping. Also
included is an integral subcooler assembly consisting of a double spiral tube-type subcooling heat exchanger and EEV providing refrigerant
subcooling modulation up to 25ºF.
Multi V Water V 575V Water Source Outdoor Units
Figure 3: Single-Frame Multi V Water V 575V
Water Source Unit.
10 |WSU PRODUCT DATA WSU PRODUCT DATA | 11
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
MECHANICAL SPECIFICATIONS
Refrigeration Oil Control
The oil return system uses the following technologies:
High Pressure Oil Return (HiPOR)
Oil is captured from compressor discharge by the centrifugal
oil separator and then returned to the compressor through
a separator oil injection pipe, preventing mixing of oil and
refrigerant on the suction side of the compressor.
Smart Oil Control
Smart oil control monitors the oil level inside the compressor
and initiates an oil return cycle to flush oil in the pipe system
back to the compressor only when the oil level is too low.
Timed oil return cycles are not necessary and the compressor
is protected from operating at oil levels that are too low.
Compressors
Each WSU frame is equipped with one hermetic, digitally-con-
trolled, inverter-driven scroll compressor to modulate capacity
(variable from 20 to 140Hz. The compressor has a built-in oil
level sensor to provide real-time oil control.
Heat Exchanger
The water heat exchanger is a stainless steel, type SUS316, refrigerant/water plate heat exchanger. The heat exchanger requires a
field-provided 50 mesh strainer and water treatment to prevent scaling inside the heat exchanger. Closed loop condenser water systems are
recommended to protect the factory-mounted heat exchanger.
Electrical
Multi V Water V 575V units are available in 575V, 60Hz, 3 Phase input power supply. All WSUs are capable of operating within voltage limits
of ±10% rated voltage, and include overcurrent protection.
Controls
Multi V Water V 575V units are factory wired with the necessary electrical control components, integral microprocessors, printed circuit
boards, thermistors, sensors, terminal blocks, and power lugs.
The control circuit between the indoor units, heat recovery units (Heat Recovery configuration only) and the WSU is an RS-485 daisy chain
communication bus. The cable is two conductor, stranded and shielded, 18 AWG.
Microprocessor-based algorithms provide component protection, soft-start capability, refrigeration system pressure and temperature control.
The variable water flow control kit allows condenser water temperatures below 59°F and works with condenser water pumps equipped with
variable frequency drive to save pumping energy.
For Heat Recovery Unit information, refer to the applicable Engineering Manual on www.lgvrf.ca
MULTI V Water V Water Source Outdoor Units
Figure 4: Dual Frame MULTI V Water V Water Source Unit. Multi V Water V 575V
Multi V Water V 575V water source units (WSU), equipped with an inverter compressor, offer superior load matching and long piping instal-
lation. The product optimizes power consumption in high-rise buildings. Add on features make it easy to upgrade the existing capacity at any
time. Sophisticated electronic control and unique refrigerant flow gives these systems the capability to perform in extreme/unusual working
conditions.
Generation 4 Equipment
The latest versions of LG’s indoor units and water source units are designated Generation 4 (Gen 4). For Gen 4 units to operate with Gen 4
features, the air conditioning system must meet the following requirements:
• All indoor units, heat recovery units, and water source units must be Gen 4.
• All water source units must have Gen 5 software installed.
• Water source units DIP switch 3 must be set to ON (factory default setting is OFF).
• All controllers must support Gen 4 features.
Low Sound Levels
When Multi V Water V 575V water source units operate fully loaded, they have one of the quietest sound levels in the industry. Sound is
almost undetectable during off-peak operation. To promote a quiet, comfortable environment, LG Multi V water source units operate at sound
levels as low as 47 dB(A) in cooling mode and 51 dB(A) in heating mode. LG customers often ask if the water source unit is running after
commissioning is complete.
All rotating components are soft-started by the controller using digitally controlled inverters, which reduces undesirable noise caused by
compressors cycling on and off.
Comfort Control at Its Best
Tight temperature control through precise load matching maximizes the time that the indoor units remove moisture. This ensures maximum
comfort and delivers the industry’s best indoor humidity levels.
Precision Load Matching
Unlike traditional air conditioning control systems, which use thermostatic controls to maintain room temperatures, LG Multi V Water V 575V controls
continuously vary the indoor unit fan speed and refrigerant ow, indirectly providing lower and more consistent humidity levels in the conditioned space.
The longer the indoor coil temperature is below the dew-point of the room with air moving across the coil, the less the space humidity level varies,
compared to technologies that cycle fans and compressors on and off multiple times per hour.
The water source unit varies the compressor speed as needed to maintain system operating pressure. As a result, the Multi V Water V 575V
system delivers precise space temperature control.
Advanced Compressor Technology
Oil Management
Oil migration is no longer a concern when choosing Multi V Water V 575V. An oil management system ensures a safe level of oil in the com-
pressor sump.
1. Smart oil system monitors oil sump levels to know when to inject oil into the compressor, eliminating the need for oil return cycles.
2. HiPOR™ oil return system minimizes oil mixing with refrigerant by separating oil at compressor discharge with an oil separator and
injecting oil back to the lower section of the compressor shell. Energy is saved by compressing the refrigerant without the oil mixed at the
compression chamber.
3. Oil injection system provides a consistent film of oil to moving parts, even at low speeds, ensuring compressor operation down to 20 Hz.
Inverter Driven
The scroll compressor is optimized to maximize compressor efficiency, which reduces power consumption and monthly utility bills. This
latest inverter technology allows the LG Multi V Water V 575V to vary the compressor motor shaft speed to deliver an appropriate amount of
cooling to all indoor units. Precise refrigerant volume delivery translates into long periods with coil surface temperatures below dew point and
minimizes compressor component run time. Occupants remain comfortable while utility costs are reduced.
PRODUCT FEATURES AND BENEFITS
MULTI V Water V Water Source Outdoor Units
12 |WSU PRODUCT DATA WSU PRODUCT DATA | 13
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
Simplified Installation
Cooling and heating systems that use the
LG MULTI V Water V simplify and reduce the mechanical and control system design time. The designer no longer has to be concerned with
interconnecting chilled and condenser water piping, air-distribution duct systems, matching and selecting chillers, towers, pumps, coils, fans,
air handlers, or Variable Air Volume (VAV) boxes.
System integration with existing building management systems has never been easier. Because all of the MULTI V Water V system compo-
nents are engineered and provided by LG, the system components and controls come pre-engineered and do not need custom programming
from third-party contractors.
Operating Range
The MULTI V Water V product line includes capacities from six (6.0) to forty-eight (48.0) tons, and features a connected indoor unit combina-
tion ratio of 50% to 130%. Operating ranges include:
Entering Water Temperatures
• 23–113 °F for cooling mode
• 14–113 °F for heating mode
• 23–113 °F for synchronous mode (heat recovery systems only)
Compact Size
All Multi V Water V 575V water source unit frames have the same physical footprint: 30-3/8” wide by 21-1/2” deep. Systems can be designed
with one, two, or a maximum of three water source unit frames.
Other Features
• Inverter Scroll Compressors
• Elevation Advantage
• Smaller Footprint
• Precision Load Matching
• AHRI 1230 Certification
PRODUCT FEATURES AND BENEFITS
MULTI V Water V Water Source Outdoor Units
Figure 5: Triple Frame MULTI V Water V Water Source Unit.
Table 1: Multi V Water V 575V Units
Combination Unit Model Number 6.0 Ton
ARWM072CAS5
8.0 Ton
ARWM096CAS5
10.0 Ton
ARWM021CAS5
12.0
ARWM144CAS5
16.0 Ton
ARWM192CAS5
Individual Component Model Numbers – – – – –
Cooling Performance
Nominal Cooling Capacity (Btu/h)172,000 96,000 119,700 144,000 192,000
Heating Performance
Nominal Heating Capacity (Btu/h)181,000 108,000 135,000 162,000 216,000
Operating Range (Entering Water Temperature)
Cooling (°F)223 – 113 23 – 113 23 – 113 23 – 113 23 – 113
Heating (°F) 14 – 113 14 – 113 14 – 113 14 – 113 14 – 113
Synchronous Operation (°F) 23 – 113 23 – 113 23 – 113 23 – 113 23 – 113
Compressor
Inverter Quantity
HSS DC Scroll x 1
Oil/Type PVE/FVC68D
Unit Data
Refrigerant Type R410A
R410A Refrigerant Factory Charge (lbs) 9.9 9.9 9.9 9.9 9.9
Refrigerant Control/Location EEV/Indoor Unit
Max. Number Indoor Units/System213 16 20 23 32
Sound Press dB(A)3 Cooling/Heating 46 48 54 54 58
Net Unit Weight (lbs.) 348 348 348 348 348
Shipping Weight (lbs.) 370 370 370 370 370
Communication Cables5,6 2 x 18 AWG
Heat Exchanger (Stainless Steel Plate)
Maximum Pressure Resistance (psi) 640 640 640 640 640
Flow at Rated Condition (GPM) 20.3 25.4 30.4 35.5 50.7
Range of Flow (GPM) 10.2 – 30.5 12.7 – 38.1 15.2 – 45.6 17.8 – 53.3 25.4 – 76.1
Total Heat of Rejection (Btu/h) 94,100 125,900 157,900 190,100 253,500
Total Heat of Absorption (Btu/h) 74,200 98,600 122,700 146,800 193,600
Pressure Drop (ft-wg) 2.34 3.51 4.94 6.50 12.61
Δt4(°F) 9.3 9.9 10.4 10.7 10.0
Piping for Heat Recovery Operation7
Liquid Line Connection (in., OD) 3/8 Braze 3/8 Braze 1/2 Braze 1/2 Braze 5/8 Braze
Low Press Vapor Line Conn (in., OD) 3/4 Braze 7/8 Braze 1-1/8 Braze 1-1/8 Braze 1-1/8 Braze
High Press Vapor Line Conn (in., OD) 5/8 Braze 3/4 Braze 3/4 Braze 7/8 Braze 1-1/8 Braze
Piping for Heat Pump Operation7
Liquid Line Connection (in., OD) 3/8 Braze 3/8 Braze 1/2 Braze 1/2 Braze 5/8 Braze
Low Pressure Vapor Line Conn (in., OD) 3/4 Braze 7/8 Braze 1-1/8 Braze 1-1/8 Braze 1-1/8 Braze
Piping for Water7
Water Inlet/Outlet Connection (in) 1-1/2 Fem 1-1/2 Fem 1-1/2 Fem 1-1/2 Fem 1-1/2 Fem
Condensate Drain (in) 3/4 Female 3/4 Female 3/4 Female 3/4 Female 3/4 Female
Multi V Water V 575V Unit Specications
GENERAL DATA
1 Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change without notice. Current certified ratings are
available at www.ahridirectory.org.
2 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required.
3 Sound pressure levels are tested in an anechoic chamber under ISO 3745 standard.
4 Value is calculated as follows: Δt = Total Heat of Rejection/(Nominal Flow Rate x 500).
5 Communication cable between Master ODU to Slave ODU(s), and Master ODU to IDUs / HRUs to be 18 AWG, 2-conductor,
twisted, stranded, shielded. Ensure the communication cable shield is properly grounded to the Master ODU chassis only.
Do not ground the ODU to IDUs / HRUs communication cable at any other point. Wiring must comply with all applicable local and
national codes.
6 Power wiring is field provided, solid or stranded, and must comply with the applicable local and national codes.
7 LG requires that LATS software be used on all projects to ensure correct line sizing. Designer must verify the shop drawing design
against the as built design using LATS. Contractor must also use LG manufactured Y-Branch and Header Kits only.
14 |WSU PRODUCT DATA WSU PRODUCT DATA | 15
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
Table 2: Multi V Water V 575V Units
Combination Unit Model Number 20.0
ARWM240CAS5
24.0
ARWM288CAS5
28.0 Ton
ARWM336CAS5
Individual Component Model Numbers ARWM096CAS5 x 1
ARWM144CAS5 x 1 ARWM144CAS5 x 2 ARWM144CAS5 +
ARWM192CAS5
Cooling Performance
Nominal Cooling Capacity (Btu/h)1239,400 287,700 336,000
Heating Performance
Nominal Heating Capacity (Btu/h)1269,000 324,000 378,000
Operating Range (Entering Water Temperature)
Cooling (°F)223 – 113 23 – 113 23 – 113
Heating (°F) 14 – 113 14 – 113 14 – 113
Synchronous Operation (°F) 23 – 113 23 – 113 23 – 113
Compressor
Inverter Quantity HSS DC Scroll x 2
Oil/Type PVE/FVC68D
Unit Data
Refrigerant Type R410A
R410A Refrigerant Factory Charge (lbs) 9.9 + 9.9 9.9 + 9.9 9.9 + 9.9
Refrigerant Control/Location EEV/Indoor Unit
Max. Number Indoor Units/System239 45 55
Sound Pressure dB(A)3 Cooling/Heating 55 57 59
Net Unit Weight (lbs.) 348 + 348 348 + 348 348 + 348 309 + 309
Shipping Weight (lbs.) 370 + 370 370 + 370 370 + 370
Communication Cables5,6 2 x 18 AWG
Heat Exchanger (Stainless Steel Plate)
Maximum Pressure Resistance (psi) 640 640 640
Flow at Rated Condition (GPM) 25.4 + 35.5 35.5 + 35.5 35.5 + 50.7
Range of Flow (GPM) 30.5 – 91.4 35.5 - 106.5 43.1 - 129.3
Total Heat of Rejection (Btu/h) 316,000 380,200 443,600
Total Heat of Absorption (Btu/h) 245,400 293,600 340,400
Pressure Drop (ft-wg) 3.51 + 6.50 6.50 + 6.50 6.50 + 12.61
Δt4(°F) 10.4 10.7 10.3
Piping for Heat Recovery Operation7
Liquid Line Connection (in., OD) 3/8 + 1/2 Braze 1/2 + 1/2 Braze 1/2 + 5/8 Braze
Low Pressure Vapor Line Conn (in., OD) 7/8 + 1-1/8 Braze 1-1/8 + 1-1/8 Braze 1-1/8 + 1-1/8 Braze
High Pressure Vapor Line Conn (in., OD) 3/4 + 7/8 Braze 7/8 + 7/8 Braze 7/8 + 1-1/8 Braze
Piping for Heat Pump Operation7
Liquid Line Connection (in., OD) 3/8 + 1/2 Braze 1/2 + 1/2 Braze 5/8 + 5/8 Braze
Low Pressure Vapor Line Conn (in., OD) 7/8 + 1-1/8 Braze 1-1/8 + 1-1/8 Braze 1-1/8 + 1-1/8 Braze
Piping for Water7
Water Inlet/Outlet Connection Size (in) (1-1/2 + 1-1/2 Fem) x2 (1-1/2 + 1-1/2 Fem) x2 (1-1/2 + 1-1/2 Fem) x2
Condensate Drain (in) 3/4 Female 3/4 Female 3/4 Female
Multi V Water V 575V Unit Specications
GENERAL DATA
1 Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change without notice. Current certified ratings are
available at www.ahridirectory.org.
2 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required.
3 Sound pressure levels are tested in an anechoic chamber under ISO 3745 standard.
4 Value is calculated as follows: Δt = Total Heat of Rejection/(Nominal Flow Rate x 500).
5 Communication cable between Master ODU to Slave ODU(s), and Master ODU to IDUs / HRUs to be 18 AWG, 2-conductor,
twisted, stranded, shielded. Ensure the communication cable shield is properly grounded to the Master ODU chassis only.
Do not ground the ODU to IDUs / HRUs communication cable at any other point. Wiring must comply with all applicable local and
national codes.
6 Power wiring is field provided, solid or stranded, and must comply with the applicable local and national codes.
7 LG requires that LATS software be used on all projects to ensure correct line sizing. Designer must verify the shop drawing design
against the as built design using LATS. Contractor must also use LG manufactured Y-Branch and Header Kits only.
Table 3: Multi V Water V 575V Units
Combination Unit Model Number 36.0 Ton
ARWM432CAS5
40.0 Ton
ARWM480CAS5
48.0
ARWM576CAS5
Individual Component Model Numbers ARWM144CAS5 x 3 ARWM144CAS5 x 2
+ARWM192CAS5 x 1 ARWM192CAS5 x 3
Cooling Performance
Nominal Cooling Capacity (Btu/h)1430,500 472,500 571,200
Heating Performance
Nominal Heating Capacity (Btu/h)1486,000 536,000 642,000
Operating Range (Entering Water Temperature)
Cooling (°F)223 – 113 23 – 113 23 – 113
Heating (°F) 14 – 113 14 – 113 14 – 113
Synchronous Operation (°F) 23 – 113 23 – 113 23 – 113
Compressor
Inverter Quantity HSS DC Scroll x 3
Oil/Type PVE/FVC68D
Unit Data
Refrigerant Type R410A
R410A Refrigerant Factory Charge (lbs) 9.9 + 9.9 + 9.9 9.9 + 9.9 + 9.9 9.9 + 9.9 + 9.9
Refrigerant Control/Location EEV/Indoor Unit
Max. Number Indoor Units/System264 64 64
Sound Pressure dB(A)3 Cooling/Heating 59 61 63
Net Unit Weight (lbs.) 348 + 348 + 348 348 + 348 + 348 348 + 348 + 348
Shipping Weight (lbs.) 370 + 370 + 370 370 + 370 + 370 370 + 370 + 370
Communication Cables5,6 2 x 18 AWG
Heat Exchanger (Stainless Steel Plate)
Maximum Pressure Resistance (psi) 640 640 640
Flow at Rated Condition (GPM) 35.5 + 35.5 + 35.5 35.5 + 35.5 + 50.7 50.7 + 50.7 + 50.7
Range of Flow (GPM) 53.3 - 159.8 60.9 – 182.6 76.1 – 228.2
Total Heat of Rejection (Btu/h) 570,300 633,700 760,500
Total Heat of Absorption (Btu/h) 440,400 487,200 580,800
Pressure Drop (ft-wg) 6.50 + 6.50 + 6.50 6.50 + 6.50 + 12.61 12.61 + 12.61 + 12.61
Δt4(°F) 10.7 10.4 10.0
Piping for Heat Recovery Operation7
Liquid Line Connection (in., OD) 1/2 + 1/2 + 1/2 Braze 1/2 + 1/2 + 5/8 Braze 5/8 + 5/8 + 5/8 Braze
Low Pressure Vapor Line Conn (in., OD) 1-1/8 + 1-1/8 + 1-1/8 Braze 1-1/8 + 1-1/8 + 1-1/8 Braze 1-1/8 + 1-1/8 + 1-1/8 Braze
High Pressure Vapor Line Conn (in., OD) 7/8 + 7/8 + 7/8 Braze 7/8 + 7/8 + 1-1/8 Braze 1-1/8 + 1-1/8 + 1-1/8 Braze
Piping for Heat Pump Operation7
Liquid Line Connection (in., OD) 1/2 + 1/2 + 1/2 Braze 1/2 + 1/2 + 5/8 Braze 5/8 + 5/8 + 5/8 Braze
Low Pressure Vapor Line Conn (in., OD) 1-1/8 + 1-1/8 + 1-1/8 Braze 1-1/8 + 1-1/8 + 1-1/8 Braze 1-1/8 + 1-1/8 + 1-1/8 Braze
Piping for Water7
Water Inlet/Outlet Connection Size (in) (1-1/2 + 1-1/2 Fem) x3 (1-1/2 + 1-1/2 Fem) x3 (1-1/2 + 1-1/2 Fem) x3
Condensate Drain (in) 3/4 Female 3/4 Female 3/4 Female
Multi V Water V 575V Unit Specications
GENERAL DATA
1 Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change without notice. Current certified
ratings are available at www.ahridirectory.org.
2 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required.
3 Sound pressure levels are tested in an anechoic chamber under ISO 3745 standard.
4 Value is calculated as follows: Δt = Total Heat of Rejection/(Nominal Flow Rate x 500).
5 Communication cable between Master ODU to Slave ODU(s), and Master ODU to IDUs / HRUs to be 18 AWG, 2-con-
ductor, twisted, stranded, shielded. Ensure the communication cable shield is properly grounded to the Master ODU
chassis only. Do not ground the ODU to IDUs / HRUs communication cable at any other point. Wiring must comply
with all applicable local and national codes.
6 Power wiring is field provided, solid or stranded, and must comply with the applicable local and national codes.
7 LG requires that LATS software be used on all projects to ensure correct line sizing. Designer must verify the shop
drawing design against the as built design using LATS. Contractor must also use LG manufactured Y-Branch and Header
Kits only.
16 |WSU PRODUCT DATA WSU PRODUCT DATA | 17
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
Table 4: 575V, 60Hz, 3-Phase Multi V Water V
For component model numbers, see the specification tables.
For 575V systems, acceptable voltage range is 518V - 632V.
Maximum allowable voltage unbalance is 2%.
MCA = Minimum Circuit Ampacity.
Maximum Overcurrent Protection (MOCP) is calculated as follows: (Largest motor RLA x 2.25) + (Sum of
other motor RLA) rounded down to the nearest standard fuse size.
Nom.
Tons
System
Model No.
Compressor (Comp.) MCA MOCP
Comp.
Qty.
Motor RLA (Ea.) Frame 1 Frame 2 Frame 3 Frame 1 Frame 2 Frame 3
Frame 1 Frame 2 Frame 3
6.0 ARWM072CAS5 1 7.1 – – 8.9 – – 15 – –
8.0 ARWM096CAS5 1 7.6 – – 9.5 – – 15 – –
10.0 ARWM121CAS5 1 9.3 – – 11.7 – – 20 – –
12.0 ARWM144CAS5 1 11.6 – – 14.5 – – 25 – –
16.0 ARWM192CAS5 1 14.2 – – 17.8 – – 30 – –
20.0 ARWM240CAS5 2 7.6 11.6 – 14.5 9.5 – 25 15 –
24.0 ARWM289CAS5 2 11.6 11.6 – 14.5 14.5 – 25 25 –
28.0 ARWM337CAS5 2 14.2 11.6 – 17.8 14.5 – 30 25 –
36.0 ARWM432CAS5 3 11.6 11.6 11.6 14.5 14.5 14.5 25 25 25
40.0 ARWM480CAS5 3 14.2 11.6 11.6 17.8 14.5 14.5 30 25 25
48.0 ARWM576CAS5 3 14.2 14.2 14.2 17.8 17.8 17.8 30 30 30
Multi V Water V 575V Unit Specications
ELECTRICAL DATA
Multi V Water V 575V Models Nominal Cooling
(Btu/h)
Indoor Units
Max. Qty. Sum of Indoor Unit Nominal Cooling Capacities (Btu/h)
Min. Capacity (Btu/h) (50%)1Max. Capacity (Btu/h) (130%)2
ARWM072CAS5 72,000 13 36,000 93,600
ARWM096CAS5 96,000 16 48,000 124,800
ARWM121CAS5 119,700 20 60,000 156,000
ARWM144CAS5 144,000 23 72,000 187,200
ARWM192CAS5 192,000 32 96,000 249,600
ARWM240CAS5 239,400 39 120,000 312,000
ARWM288CAS5 287,700 45 144,000 374,400
ARWM336CAS5 336,000 55 168,000 436,800
ARWM432CAS5 430,500 64 216,000 561,600
ARWM480CAS5 472,500 64 240,000 624,000
ARWM576CAS5 571,200 64 288,000 748,800
Table 5: Multi V Water V 575V Unit / Indoor Unit Matching Limitations
CONNECTION LIMITATIONS
1 50% = Minimum Combination Ratio.
2 130% = Maximum Combination Ratio.
Water Source Units
18 |WSU PRODUCT DATA WSU PRODUCT DATA | 19
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
Single Frame Heat Pump and Heat Recovery
DIMENSIONS
Dual Frame Heat Pump and Heat Recovery
DIMENSIONS
Job Name/Location
ARWM072CAS5
Multi VTM Water 5 Heat Pump/Heat Recovery
6 Ton Water Source Unit
Tag No:
Date:
PO No:
Page 2 of 2
For continual product development, LG reserves the right to change specifications without notice.
Job Name/Location
Tag No:
Date:
PO No:
Page 2 of 2
For continual product development, LG reserves the right to change specifications without notice.
ARWM288CAS5
Multi VTM Water 5
Heat Pump/Heat Recovery
28 Ton Water Source Unit
ARWM144CAS5
ARWM144CAS5
20 |WSU PRODUCT DATA WSU PRODUCT DATA | 21
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
Triple Frame Heat Pump and Heat Recovery
DIMENSIONS WIRING DIAGRAMS
6/8/10/12/16 Tons
Multi V Water V 575V
Job Name/Location
Tag No:
Date:
PO No:
Page 2 of 2
For continual product development, LG reserves the right to change specifications without notice.
ARWM576CAS5
Multi VTM Water 5
Heat Pump/Heat Recovery
48 Ton Water Source Unit
ARWM192CAS5
ARWM192CAS5
ARWM192CAS5
22 |WSU PRODUCT DATA WSU PRODUCT DATA | 23
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
REFRIGERANT FLOW DIAGRAMS
575V 6/8/10/12/16 Ton
Multi V Water V Heat Pump Cong. - Cooling Operation
IDU HEX
IDU
IDU HEX
IDU
Flare
Joint
Flare
Joint
Flare
Joint
Flare
Joint
High
Pressure
Water Source Unit
Accumulator
Oil
Separator
Vapor
Liquid
Low
Pressure
Discharge
Temp.
Suction
Temp.
SC HEX
Outlet Temp.
Remarks
Liquid
Temp.
INV
Comp
High
Pressure
Pressure Switch
EEV
Pressure Sensor
Strainer Check Valve
Service Valve 4-Way Valve
Solenoid Valve
Temperature Sensor
High Pressure Liquid
High Pressure Vapor
Low Pressure Vapor
MM
S
S
Sub-Cooling HEX
EEV EEV
Water
Outlet pipe
Water
Inlet pipe
Plate
HEX
Water Outlet
Temp.
Outside
Air Temp.
REFRIGERANT FLOW DIAGRAMS
Multi V Water V Heat Pump Cong. - Heating Operation
575V 6/8/10/12/16 Ton
M M
S
EEV EEV
Sub-Cooling HEX
IDU HEX
IDU
IDU HEX
IDU
Flare
Joint
Flare
Joint
Flare
Joint
Flare
Joint
High
Pressure
Water Source Unit
Accumulator
Oil
Separator
Vapor
Liquid
Low
Pressure
Discharge
Temp.
Suction
Temp.
SC HEX
Outlet Temp.
Liquid
Temp.
INV
Comp
High
Pressure
Remarks
Pressure Switch
EEV
Pressure Sensor
Strainer Check Valve
Service Valve 4-Way Valve
Solenoid Valve
Temperature Sensor
S
High Pressure Liquid
High Pressure Vapor
Low Pressure Vapor
Water
Outlet pipe
Water
Inlet pipe
Plate
HEX
Water Outlet
Temp.
Outside
Air Temp.
24 |WSU PRODUCT DATA WSU PRODUCT DATA | 25
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
575V 6/8/10/12/16 Ton
Multi V Water V Heat Recovery Cong. - Cooling Operation
HR unit
High Temperature High Pressure Liquid
High Temperature High Pressure Vapor
Low Temperature Low Pressure Vapor
s
s
s
s
s
s
s
s
s
s
s
s
s
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
Remarks
Check
Valve EEV
Solenoid
Valve
Pressure
Sensor
Strainer Temperature
Sensor
SVC
Valve
Pressure
Switch
S
Inverter
Comp
Accum
Oil
Seperator
S
S
High Pressure Vapor Pipe
Low Pressure Vapor Pipe
Liquid Pipe
Charging Port
Comp Discharge
Temperature
Sensor
Liquid Pipe
Temperature
Sensor
Suction
Temperature
Sensor
Low Pressure
Sensor
Pressure
Switch
Sub-Cooling
Circuit Outlet
Temperature
Sensor
Sub-Cooling
Outside
EEV
Outside Air
Temperature
Sensor
Hot Vapor Valve
4-Way Valve
High Pressure
Sensor
Water Out
Water In
Water Outlet
Temperature
Sensor
Sub-Cooling HEX
REFRIGERANT FLOW DIAGRAMS
575V 6/8/10/12/16 Ton
Multi V Water V Heat Recovery Cong. - Heating Operation
s
s
s
s
s
s
s
s
s
s
s
s
HR unit
High Temperature High Pressure Liquid
High Temperature High Pressure Vapor
Low Temperature Low Pressure Vapor
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
s
Remarks
Check
Valve EEV
Solenoid
Valve
Pressure
Sensor
Strainer Temperature
Sensor
SVC
Valve
Pressure
Switch
S
I n v e r t e r
C o m p
A c c u m
O i l
Seperator
S
S
C o m p D i s c h a r g e
T e m p e r a t u r e
Se n s o r
L i q u i d P i p e
T e m p e r a t u r e
Se n s o r
Su c t i o n
T e m p e r a t u r e
Se n s o r
L o w P r e s s u r e
Se n s o r
P r e s s u r e
Sw i t c h
Su b - C o o l i n g
C i r c u i t O u t l e t
T e m p e r a t u r e
Se n s o r
Su b - C o o l i n g
O u t s i d e
EEV
O u t s i d e A i r
T e m p e r a t u r e
Se n s o r
H o t V a p o r V a l v e
4 - W a y V a l v e
H i g h P r e s s u r e
Se n s o r
W a t e r O u t
W a t e r I n
W a t e r O u t l e t
T e m p e r a t u r e
Se n s o r
H i g h P r e s s u r e V a p o r P i p e
L o w P r e s s u r e V a p o r P i p e
L i q u i d P i p e
C h a r g i n g P o r t
Su b - C o o l i n g H E X
REFRIGERANT FLOW DIAGRAMS
26 |WSU PRODUCT DATA WSU PRODUCT DATA | 27
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
575V 6/8/10/12/16 Ton
Multi V Water V Heat Recovery Cong. - Cooling Based Simultaneous Operation
I n v e r t e r
C o m p
A c c u m
O i l
Seperator
S
S
C o m p D i s c h a r g e
T e m p e r a t u r e
Se n s o r
L i q u i d P i p e
T e m p e r a t u r e
Se n s o r
Su c t i o n
T e m p e r a t u r e
Se n s o r
L o w P r e s s u r e
Se n s o r
P r e s s u r e
Sw i t c h
Su b - C o o l i n g
C i r c u i t O u t l e t
T e m p e r a t u r e
Se n s o r
Su b - C o o l i n g
O u t s i d e
EEV
O u t s i d e A i r
T e m p e r a t u r e
Se n s o r
H o t G a s V a l v e
4 - W a y V a l v e
H i g h P r e s s u r e
Se n s o r
W a t e r O u t
W a t e r I n
W a t e r O u t l e t
T e m p e r a t u r e
Se n s o r
H i g h P r e s s u r e V a p o r P i p e
L o w P r e s s u r e V a p o r P i p e
L i q u i d P i p e
Su b - C o o l i n g H E X
s
s
s
s
s
s
s
s
s
s
s
s
HR unit
Cooling
"ON"
Cooling
"ON"
Cooling
"ON"
Heating
"ON"
High Temperature High Pressure Liquid
High Temperature High Pressure Vapor
Low Temperature Low Pressure Vapor
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
s
Remarks
Check
Valve EEV
Solenoid
Valve
Pressure
Sensor
Strainer Temperature
Sensor
SVC
Valve
Pressure
Switch
S
C h a r g i n g P o r t
REFRIGERANT FLOW DIAGRAMS
575V 6/8/10/12/16 Ton
Multi V Water V Heat Recovery Cong. - Heating Based Simultaneous Operation
Heating
"ON"
Heating
"ON"
Heating
"ON"
Cooling
"ON"
HR unit
High Temperature High Pressure Liquid
High Temperature High Pressure Vapor
Low Temperature Low Pressure Vapor
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
s
s
s
s
s
s
s
s
s
s
s
s
s
Remarks
Check
Valve EEV
Solenoid
Valve
Pressure
Sensor
Strainer Temperature
Sensor
SVC
Valve
Pressure
Switch
S
I n v e r t e r
C o m p
A c c u m
O i l
Seperator
Su b - C o o l i n g H E X
S
S
C o m p D i s c h a r g e
T e m p e r a t u r e
Se n s o r
L i q u i d P i p e
T e m p e r a t u r e
Se n s o r
Su c t i o n
T e m p e r a t u r e
Se n s o r
L o w P r e s s u r e
Se n s o r
P r e s s u r e
Sw i t c h
Su b - C o o l i n g
C i r c u i t O u t l e t
T e m p e r a t u r e
Se n s o r
Su b - C o o l i n g
O u t s i d e
EEV
O u t s i d e A i r
T e m p e r a t u r e
Se n s o r
H o t V a p o r V a l v e
4 - W a y V a l v e
H i g h P r e s s u r e
Se n s o r
W a t e r O u t
W a t e r I n
W a t e r O u t l e t
T e m p e r a t u r e
Se n s o r
H i g h P r e s s u r e V a p o r P i p e
L o w P r e s s u r e V a p o r P i p e
L i q u i d P i p e
C h a r g i n g P o r t
REFRIGERANT FLOW DIAGRAMS
28 |WSU PRODUCT DATA WSU PRODUCT DATA | 29
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
575V 6/8/10/12/16 Ton
Multi V Water V Heat Recovery Cong. - Balanced Simultaneous Operation
Heating
"ON"
Heating
"ON"
Heating
"ON"
Cooling
"ON"
HR unit
High Temperature High Pressure Liquid
High Temperature High Pressure Vapor
Low Temperature Low Pressure Vapor
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
s
s
s
s
s
s
s
s
s
s
s
s
s
Remarks
Check
Valve EEV
Solenoid
Valve
Pressure
Sensor
Strainer Temperature
Sensor
SVC
Valve
Pressure
Switch
S
I n v e r t e r
C o m p
A c c u m
O i l
Seperator
Su b - C o o l i n g H E X
S
S
C o m p D i s c h a r g e
T e m p e r a t u r e
Se n s o r
L i q u i d P i p e
T e m p e r a t u r e
Se n s o r
Su c t i o n
T e m p e r a t u r e
Se n s o r
L o w P r e s s u r e
Se n s o r
P r e s s u r e
Sw i t c h
Su b - C o o l i n g
C i r c u i t O u t l e t
T e m p e r a t u r e
Se n s o r
Su b - C o o l i n g
O u t s i d e
EEV
O u t s i d e A i r
T e m p e r a t u r e
Se n s o r
H o t V a p o r V a l v e
4 - W a y V a l v e
H i g h P r e s s u r e
Se n s o r
W a t e r O u t
W a t e r I n
W a t e r O u t l e t
T e m p e r a t u r e
Se n s o r
H i g h P r e s s u r e V a p o r P i p e
L o w P r e s s u r e V a p o r P i p e
L i q u i d P i p e
C h a r g i n g P o r t
REFRIGERANT FLOW DIAGRAMS
575V 6/8/10/12/16 Ton
Multi V Water V Heat Recovery Cong. - Oil Return
Heating
"ON"
Heating
"ON"
Heating
"ON"
Cooling
"ON"
HR unit
High Temperature High Pressure Liquid
High Temperature High Pressure Vapor
Low Temperature Low Pressure Vapor
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
IDU HEX
IDU
Flare
Joint
Flare
Joint
M
EEV
s
s
s
s
s
s
s
s
s
s
s
s
s
Remarks
Check
Valve EEV
Solenoid
Valve
Pressure
Sensor
Strainer Temperature
Sensor
SVC
Valve
Pressure
Switch
S
I n v e r t e r
C o m p
A c c u m
O i l
Seperator
Su b - C o o l i n g H E X
S
S
C o m p D i s c h a r g e
T e m p e r a t u r e
Se n s o r
L i q u i d P i p e
T e m p e r a t u r e
Se n s o r
Su c t i o n
T e m p e r a t u r e
Se n s o r
L o w P r e s s u r e
Se n s o r
P r e s s u r e
Sw i t c h
Su b - C o o l i n g
C i r c u i t O u t l e t
T e m p e r a t u r e
Se n s o r
Su b - C o o l i n g
O u t s i d e
EEV
O u t s i d e A i r
T e m p e r a t u r e
Se n s o r
H o t V a p o r V a l v e
4 - W a y V a l v e
H i g h P r e s s u r e
Se n s o r
W a t e r O u t
W a t e r I n
W a t e r O u t l e t
T e m p e r a t u r e
Se n s o r
H i g h P r e s s u r e V a p o r P i p e
L o w P r e s s u r e V a p o r P i p e
L i q u i d P i p e
C h a r g i n g P o r t
REFRIGERANT FLOW DIAGRAMS
30 |WSU PRODUCT DATA WSU PRODUCT DATA | 31
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
ACOUSTIC DATA
Sound Pressure Levels
575 V Sound Pressure Level (dB)A
ARWM072CAS5 6.0 ton 46
ARWM096CAS5 8.0 ton 48
ARWM121CAS5 10.0 ton 54
ARWM144CAS5 12.0 ton 54
ARWM192CAS5 16.0 ton 58
ARWM240CAS5 20.0 ton 55
ARWM288CAS5 24.0 ton 57
ARWM336CAS5 28.0 ton 59
ARWM432CAS5 36.0 ton 59
ARWM480CAS5 40.0 ton 61
ARWM576CAS5 48.0 ton 63
• Measurement taken 3.3′ above finished floor, and at a distance of
3.3′ from face of unit.
• Measurements taken with no attenuation and units operating at full
load normal operating condition.
• Sound level will vary depending on a range of factors such as
construction (acoustic absorption coefficient) of particular area in
which the equipment is installed.
• Sound power levels are measured in dB(A)±3.
• Tested in anechoic chamber per ISO Standard 3745. 3.3ft
3.3ft
Acoustic Data for WSU Models Figure 6: Sound Pressure Measurement Location.
Table 6: Multi V Water V 575V ODU Sound Pressure Levels.
ACOUSTIC DATA
ARWM072CAS5 ARWM096CAS5 ARWM121CAS5
ARWM144CAS5 ARWM192CAS5
Multi V Water V 575V
Sound Pressure Levels
ARWM240CAS5
32 |WSU PRODUCT DATA WSU PRODUCT DATA | 33
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
Multi V Water V 575V continued.
ARWM288CAS5 ARWM336CAS5
ACOUSTIC DATA
Sound Pressure Levels
ARWM432CAS5
ARWM480CAS5
HEAD LOSS BY WATER FLOW
Multi V Water V 575V Systems
ARWM576CAS5
Multi V Water V 575V Models:
ARWM072CAS5, ARWM096CAS5, ARWM-
121CAS5, ARWM144CAS5, ARWM192CAS5
0
2
4
6
8
10
12
14
010 20 30 40 50 60 70 80
Pressure drop [psi]
Water flow rate [GPM]
34 |WSU PRODUCT DATA WSU PRODUCT DATA | 35
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
ACCESSORIES
Indoor Unit Y-Branches for Heat Pump Configuration
Indoor Unit Y-Branches
Models Pipe
ARBLN01621
Vapor Pipe
I.D. 3/4 (19.05)
O.D. 5/8 (15.88)
I.D. 1/2 (12.7)
I.D. 5/8 (15.88)
I.D. 5/8 (15.88)
I.D. 5/8 (15.88) I.D. 1/2 (12.7)
I.D. 1/2 (12.7)
11-1/2 (292)
11-1/16 (281)
2-15/16
(74)
2-3/4 (70)
1
1
Liquid Pipe
I.D. 1/2 (12.7)
2-3/4 (70)
I.D. 1/4 (6.35)
I.D. 1/4 (6.35)
I.D. 1/4 (6.35)
1
1
I.D. 3/8 (9.52)
I.D. 3/8 (9.52)
I.D. 9.52 (3/8)
O.D. 3/8 (9.52)
ARBLN03321
16-1/4 (413)
15-3/8 (390)
I.D. 3/4 (19.05)
I.D. 3/4 (19.05)
I.D. 3/4 (19.05) I.D. 1/2 (12.7)
I.D. 1/2
(12.7)
2-3/4 (70)
I.D. 5/8 (15.88)
I.D. 5/8 (15.88)
I.D. 1 (25.4)
I.D. 1 (25.4)
O.D. 1 (25.4)
3-1/8 (80) 4-5/16 (110)
3-1/4
(83)
12
3
3
O.D. 3/4 (19.05)
O.D. 3/4 (19.05)
1 2
I.D. 7/8 (22.2)
I.D. 7/8 (22.2)
I.D. 7/8 (22.2)
I.D. 28.58 (1-1/8)
I.D. 1/2 (12.7)
I.D. 1/2 (12.7)
I.D. 1/2 (12.7) (74)
2-15/16
13-1/16 (332)
12-5/8 (321)
I.D. 1/4 (6.35)
I.D. 1/4 (6.35)
I.D. 3/8 (9.52)
I.D. 3/8 (9.52)
I.D. 3/8 (9.52)
ARBLN07121
I.D. 1/2
(12.7)
14-13/16 (376)
15-29/32 (404)
3-9/16 (90)
I.D. 5/8 (15.88)
I.D. 5/8 (15.88)
2
3
1
21 3
I.D. 3/4 (19.05)
I.D. 3/4 (19.05)
O.D. 3/4 (19.05)
(96)
3-3/4
I.D. 7/8 (22.2)
I.D. 7/8 (22.2)
O.D. 7/8 (22.2)
I.D. 1-3/8 (34.9)
I.D. 1-1/8 (28.58)
I.D. 28.58 (1-1/8)
I.D. 1-1/8 (28.58)
O.D. 1-1/4 (31.8)
I.D. 1-1/4 (31.8)
I.D. 1-1/4 (31.8) I.D. 5/8 (15.88)
I.D. 5/8 (15.88)
I.D. 5/8 (15.88)
I.D. 1/2 (12.7) I.D. 1/2 (12.7)
I.D. 1/2 (12.7)
O.D. 1/2 (12.7)
O.D. 1/2 (12.7)
2-3/4 (70)
4-5/16 (110)
14-5/8 (371)
15-1/2 (394)
(83)
3-1/4
2
3
3
I.D. 3/4 (19.05)
I.D. 3/4 (19.05)
I.D. 3/4 (19.05)
2
I.D. 1/4 (6.35)
I.D. 3/8 (9.52) I.D. 3/8 (9.52)
ARBLN14521
I.D. 1/2 (12.7)
2-3/4 (70)
18-9/16 (471)
20-3/8 (517)
(125)
4-15/16
5-1/8 (130)
I.D. 5/8 (15.88) I.D. 1-5/8 (41.3)
I.D. 1-5/8
(41.3)
I.D. 1-5/8 (41.3)
I.D. 1-1/2 (38.1)
I.D. 1-1/2 (38.1)
I.D. 1-1/2 (38.1)
O.D. 1-1/2 (38.1)
O.D. 5/8 (15.88)
2
3
3
2
2
3
3
4-3/4 (120)
4-3/4 (120) 3-9/16 (90)
I.D. 3/4 (19.05)
I.D. 3/4 (19.05)
I.D. 7/8
(22.2)
I.D. 7/8 (22.2)
O.D. 7/8 (22.2)
I.D. 1-3/8 (34.9)
I.D. 1-3/8 (34.9)
I.D. 1-3/8 (34.9)
O.D. 1-3/8 (34.9)
I.D. 1-1/8 (28.58)
O.D. 1-1/8 (28.58)
I.D. 1-1/8 (28.58)
I.D. 1/2 (12.7)
O.D. 1/2 (12.7)
I.D. 1/2
(12.7)
4-5/16 (110)4-5/16 (110)
16-3/8 (416)
17-1/2 (444)
O.D. 5/8 (15.88)
I.D. 5/8 (15.88)
I.D. 3/4 (19.05)
I.D. 5/8 (15.88)
I.D. 5/8 (15.88)
I.D. 3/4 (19.05)
I.D. 3/4 (19.05)
O.D. 19.05 (3/4)
3-1/8 (80)
2
3
1
2 3 3
(96)
3-3/4
I.D. 7/8 (22.2)
I.D. 7/8 (22.2)
I.D. 7/8 (22.2)
I.D. 1/4 (6.35)
I.D. 3/8 (9.52)
I.D. 9.52 (3/8)
(Unit: Inch [mm])
Vapor Pipe Liquid Pipe
Vapor Pipe Liquid Pipe
Vapor Pipe Liquid Pipe
2-15/16
(74)
11-1/2 (292)
11-1/16 (281)
4-3/4 (120) 4-3/4 (120)
Vapor Pipe Liquid Pipe
AJR54072929 AJR54072927
AJR54072930 AJR54072928
AJR54072931
AJR54072933
AJR54072932
AJR54072908
ARBLN23220
O.D. 1-1/8 (28.58)
I.D. 7/8
(22.2)
4-1/2 (115)
X2
3-15/16 (100)
O.D. 5/8 (15.88)
I.D. 1/2 (12.7)
2-3/4 (70) O.D. 7/8 (22.2)
I.D. 5/8 (15.88)
I.D. 3/4 (19.05)
4-3/4 (120)
O.D. 1-1/2 (38.1)
I.D. 1-3/8 (34.9)
I.D. 1-1/8 (28.58)
X2
6-7/8 (175)
I.D. 1-/12 (31.8) I.D. 2-1/8 (53.98) I.D. 1
(25.4)
I.D. 1-3/4 (44.48)
I.D. 1-1/2 (38.1)
I.D. 1-5/8 (41.3)
I.D. 1-3/4 (44.48)
I.D. 1-1/2 (38.1)
I.D. 1-5/8
(41.3)
I.D. 2-1/8 (53.98)
16-9/16 (420)
19-5/16 (490)
5-1/4 (134)
12
233
23
3 3
3
I.D. 1-3/4
(44.48)
O.D. 1-3/4
(44.48)
O.D. 3/4 (19.05)
I.D. 5/8 (15.88)
O.D. 1/2 (12.7)
I.D. 3/8 (9.52)
X2
4-5/16 (110)
I.D. 1 (25.4)
I.D. 3/4
(19.05)
I.D. 3/4 (19.05)I.D. 7/8 (22.2)
I.D. 1 (25.4)
I.D. 1 (25.4)
I.D. 7/8 (22.2)
13-5/8 (346)
14-15/16 (379)
3-3/4
(96)
3
23
3
2
I.D. 7/8 (22.2)
I.D. 1/2 (12.7) I.D. 1/4 (6.35)
4-5/16 (110)
AJR54072909 AJR54072910
ACCESSORIES
Indoor Unit Y-branches for Heat Recovery Configuration
Indoor Unit Y-Branches
(Unit: Inch [mm])
Models Pipe
ARBLB01621
Low-Pressure Vapor Pipe Liquid Pipe High-Pressure Vapor Pipe
ARBLB03321
ARBLB07121
Low-Pressure Vapor Pipe Liquid Pipe High-Pressure Vapor Pipe
Low-Pressure Vapor Pipe Liquid Pipe High-Pressure Vapor Pipe
Low-Pressure Vapor Pipe Liquid Pipe High-Pressure Vapor Pipe
ARBLB14521
Low-Pressure Vapor Pipe Liquid Pipe High-Pressure Vapor Pipe
ARBLB23220
O.D. 3/4 (19.05)
I.D. 5/8 (15.88)
O.D. 1/2 (12.7)
I.D. 3/8 (9.52)
X2
4-5/16 (110)
I.D. 1 (25.4)
I.D. 3/4
(19.05)
I.D. 3/4 (19.05)I.D. 7/8 (22.2)
I.D. 1 (25.4)
I.D. 1 (25.4)
I.D. 7/8 (22.2)
13-5/8 (346)
14-15/16 (379)
3-3/4
(96)
3
23
3
2
I.D. 7/8 (22.2)
I.D. 1/2 (12.7) I.D. 1/4 (6.35)
4-5/16 (110)
O.D. 1-1/8 (28.58)
I.D. 7/8
(22.2)
4-1/2 (115)
X2
3-15/16 (100)
O.D. 5/8
(15.88)
I.D. 1/2 (12.7)
2-3/4 (70) O.D. 7/8 (22.2)
I.D. 5/8 (15.88)
I.D. 3/4 (19.05)
4-3/4 (120)
O.D. 1-1/2
(38.1)
I.D. 1-3/8
(34.9)
I.D. 1-1/8 (28.58)
X2
6-7/8 (175)
I.D. 1-/12 (31.8) I.D. 2-1/8 (53.98) I.D. 1
(25.4)
I.D. 1-3/4 (44.48)
I.D. 1-1/2 (38.1)
I.D. 1-5/8 (41.3)
I.D. 1-3/4
(44.48)
I.D. 1-1/2 (38.1)
I.D. 1-5/8
(41.3)
I.D. 2-1/8 (53.98)
16-9/16 (420)
19-5/16 (490)
5-1/4 (134)
12
233
23
3 3
3
I.D. 1-3/4
(44.48)
O.D. 1-3/4
(44.48)
AJR54072902
AJR54072905
AJR72963602
I.D. 3/4 (19.05)
O.D. 5/8 (15.88)
I.D. 1/2 (12.7)
I.D. 5/8
(15.88)
I.D. 1/2 (12.7)
I.D. 5/8
(15.88)
I.D. 5/8 (15.88)
I.D. 1/2 (12.7)
11-1/2 (292)
11-1/16 (281)
2-15/16
(74)
2-3/4 (70)
I.D.
5/8 (15.88)
I.D.
3/8 (9.52)
I.D.
5/8
(15.88)
I.D
1/2
(12.7)
I.D.
3/8
(9.52)
I.D.
5/8
(15.88)
I.D.
3/8 (9.52)
I.D.
1/2 (12.7)
14-5/8 (372)
13-13/16 (351)
I.D. 1/2 (12.7)
O.D. 3/8 (9.52)
I.D. 3/8 (9.52)
I.D. 3/8 (9.52)
I.D. 1/4
(6.35)
I.D. 3/8 (9.52)
I.D. 1/4 (6.35)
11-1/2 (292)
11-1/16 (281)
2-3/4 (70)
2-15/16
(74)
I.D. 1/4 (6.35)
2-15/16
(74)
I.D.
1/2 (12.7)
AJR54072901 AJR72963601
I.D. 1 (25.4)
16-1/4 (413)
15-3/8 (390)
3-1/4
(83)
I.D. 5/8
(15.88)
I.D. 3/4
(19.05) I.D. 1/2
(12.7)
I.D. 1/2 (12.7)
I.D. 3/4
(19.05)
I.D. 5/8
(15.88)
I.D. 7/8 (22.2)
I.D. 1-1/8 (28.58)
O.D. 1 (25.4)
I.D. 7/8 (22.2)
O.D. 3/4 (19.05)
O.D. 3/4
(19.05)
I.D. 7/8 (22.2)
I.D. 1
(25.4)
3-1/8 (80) 4-5/16 (110)
I.D.
3/8 (9.52)
I.D
. 1/2 (12.7)
I.D.
3/8 (9.52)
I.D
. 1/2
(12.7)
I.D.
1/4
(6.35)
I.D
. 1/2 (12.7)
13-1/16 (332)
12-5/8 (321)
2-15/16
(74)
I.D.
3/8 (9.52)
I.D.
1/4 (6.35)
I.D. 1 (25.4)
I.D.
5/8
(15.88)
I.D.
3/4
(19.05)
O.D.
5/8
(15.88)
444
421
3-3/4
(96)
I.D.
7/8 (22.2)
I.D.
3/4 (19.05)
I.D.
5/8
(15.88)
I.D.
3/4 (19.05)
I.D.
7/8 (22.2)
I.D.
7/8 (22.2)
O.D.
5/8 (15.88)
I.D. 1/2 (12.7)
2-3/4 (70)
I.D. 3/4
(19.05)
I.D.
1/2
(12.7)
I.D. 3/8
(9.52)
4-5/16 (110) 2-3/4 (70)
AJR54072906
14-13/16 (376)
15-15/16 (404)
3-3/4
(96)
I.D. 1-3/8
(34.9) O.D. 1-1/4
(31.8)
I.D. 7/8 (22.2)
O.D. 7/8 (22.2) I.D. 1-1/8
(28.58)
I.D. 1-1/8 (28.58)
4-3/4 (120) 3-9/16 (90) 4-3/4 (120)
I.D. 1-1/4 (31.8)
I.D.
3/4 (19.05)
I.D.
5/8 (15.88)
I.D. 1/2
(12.7)
I.D. 3/4
(19.05)
I.D. 5/8
(15.88)
I.D.
7/8 (22.2)
I.D.
1-1/8 (28.58)
O.D. 3/4
(19.05)
I.D. 1-1/4
(31.8)
I.D. 3/4
(19.05)
I.D. 1/2 (12.7)
I.D. 1/2 (12.7)
I.D. 3/4 (19.05)
I.D. 5/8 (15.88)
I.D. 1/2
(12.7)
I.D. 3/4 (19.05)
I.D. 5/8 (15.88)
14-5/8 (371)
15-1/2 (394)
3-1/4
(83)
4-5/16 (110) 2-3/4 (70)
15 (381)
16-1/8 (409)
3-3/4
(96)
I.D. 1-1/8 (28.58)
I.D. 1 (25.4)
I.D. 3/4 (19.05)
I.D. 3/4
(19.05)
I.D. 7/8 (22.2)
I.D. 1
(25.4)
O.D. 3/4 (19.05)
I.D. 5/8 (15.88)
O.D. 1/2 (12.7)
I.D. 3/8 (9.52)
2-3/4 (70)
O.D. 3/4 (19.05)
I.D. 5/8 (15.88)
I.D. 7/8 (22.2)
I.D. 1 (25.4)
I.D. 5/8
(15.88)
O.D. 1/2
(12.7)
I.D. 3/8
(9.52)
I.D. 1/4
(6.35)
O.D. 1/2
(12.7)
I.D. 3/8
(9.52)
I.D. 1/2
(12.7)
2-3/4 (70)
4-5/16 (110)
AJR72963603AJR54072903AJR54072907
18-9/16 (471)
20-3/8 (517)
4-15/16 (125)
4-3/4 (120) 5-1/8 (130)
I.D. 3/4 (19.05) I.D. 5/8
(15.88)
O.D. 7/8 (22.2)
I.D. 1/2 (12.7)
I.D. 3/4
(19.05)
I.D. 7/8 (22.2)
I.D. 1-5/8 (41.3)
I.D. 1-5/8 (41.3)
O.D. 1-3/8
(34.9)
I.D. 1-3/8 (34.9)
I.D. 1-3/8 (34.9)
I.D. 7/8
(22.2)
I.D. 1-1/8
(28.58)
I.D. 1-1/8 (28.58)
I.D. 1-1/2 (38.1)
I.D. 1-5/8 (41.3)
I.D. 1-3/8 (34.9)
I.D. 1-1/2 (38.1)
O.D. 1-1/2
(38.1)
O.D. 5/8
(15.88)
O.D. 1-1/8 (28.58)
3-9/16 (90)
2-3/4 (70) 4-3/4 (120)
I.D. 1-1/2 (38.1)
16-3/8 (416)
17-1/2 (444)
3-3/4
(96)
O.D. 5/8
(15.88)
I.D. 1/2 (12.7)
O.D. 1/2 (12.7)
I.D. 3/8
(9.52)
I.D. 5/8 (15.88)
I.D. 7/8 (22.2)
I.D. 7/8
(22.2)
I.D. 3/4 (19.05)
I.D. 5/8 (15.88) I.D. 1/2
(12.7)
I.D. 5/8 (15.88)
I.D. 3/4 (19.05)
I.D. 7/8 (22.2)
O.D. 3/4
(19.05)
3-1/8 (80)
4-5/16 (110) 4-5/16 (11 0 )
I.D. 3/4 (19.05)
I.D. 3/8 (9.52)
I.D. 1/4
(6.35)
O.D. 1 (25.4)
4-3/4 (120)
O.D. 1/2 (12.7)
I.D. 3/8 (9.52)
2-3/4 (70) O.D. 3/4
(19.05)
4-5/16 (110)
O.D. 1 (25.4) I.D. 7/8 (22.2)
3-1/8 (80)
17-13/16 (453)
19-5/16 (491)
4-3/8
(111)
I.D. 1-1/8 (28.58)
I.D. 1/38 (34.9)
I.D. 1-1/8 (28.58)
I.D. 1-1/4 (31.8)
I.D. 1 (25.4)
I.D. 1-1/4 (31.8)
I.D. 1
(25.4)
I.D. 1-1/8
(28.58)
I.D. 1-1/4
(31.8)
I.D. 7/8
(22.2)
I.D. 3/4
(19.05) I.D. 5/8 (15.88)
I.D. 1/2
(12.7)
AJR54072908 AJR54072904 AJR72963604
AJR54072909 AJR54072910
18-9/16 (471)
20-3/8 (517)
4-15/16
(125)
4-3/4 (120) 5-1/8 (130)
I.D. 3/4 (19.05) I.D. 5/8
(15.88)
O.D. 7/8 (22.2)
I.D. 1/2 (12.7)
I.D. 3/4
(19.05)
I.D. 7/8 (22.2)
I.D. 1-5/8 (41.3)
I.D. 1-5/8 (41.3)
O.D. 1-3/8
(34.9)
I.D. 1-3/8 (34.9)
I.D. 1-3/8 (34.9)
I.D. 7/8
(22.2)
I.D. 1-1/8
(28.58)
I.D. 1-1/8 (28.58)
I.D. 1-1/2 (38.1)
I.D. 1-5/8 (41.3)
I.D. 1-3/8 (34.9)
I.D. 1-1/2 (38.1)
O.D. 1-1/2
(38.1)
O.D. 5/8
(15.88)
O.D. 1-1/8 (28.58)
3-9/16 (90)
2-3/4 (70) 4-3/4 (120)
I.D. 1-1/2 (38.1)
AJR54072908
36 |WSU PRODUCT DATA WSU PRODUCT DATA | 37
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
Outdoor Unit Y-branches for Heat Pump Configuration
Multi-frame
Connector
Combination Vapor pipe Liquid pipe
ARCNN21
Combination specification Vapor pipe Liquid pipe
ARCNN21
ARCNN31
Unit: inch
Unit: inch
B
B
5-1/8
I.D. 1-1/2
O.D.1-3/8
I.D. 1-5/8
16-3/8
16-1/16
4-3/8
I.D. 1-3/8
I.D. 1-1/4
I.D. 1-1/8 I.D. 1-1/8
I.D. 1-1/8
I.D. 7/8
4-3/4
I.D. 7/8
I.D.
3/4
O.D. 1-1/8
13-1/16
12-3/8
O.D. 3/4
O.D. 5/8
I.D. 3/4
I.D. 5/8
I.D. 5/8
I.D. 5/8
I.D. 7/8
4-3/8
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 3/8
2-3/4
3-5/16
I.D. 3/8
5-1/8
I.D. 1-1/2
O.D.1-3/8
I.D. 1-5/8
16-3/8
16-1/16
4-3/8
I.D. 1-3/8
I.D. 1-1/4
I.D. 1-1/8 I.D. 1-1/8
I.D. 1-1/8
I.D. 7/8
4-3/4
I.D. 7/8
I.D.
3/4
O.D. 1-1/8
13-1/16
12-3/8
O.D. 3/4
O.D. 5/8
I.D. 3/4
I.D. 5/8
I.D. 5/8
I.D. 5/8
I.D. 7/8
4-3/8
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 3/8
2-3/4
3-5/16
I.D. 3/8
I.D. 1-3/8
O.D. 1-3/8
4-15/16
16
13-15/16
4-3/8
I.D. 1-5/8
I.D. 1-1/8
4-3/4
I.D. 1-5/8 I.D. 7/8
I.D.
3/4
O.D.1-1/8
I.D. 1-3/8
I.D. 1-1/2
O.D. 3/4 O.D. 3/4
I.D. 5/8
I.D.
7/8
I.D. 1/2
13-3/16
11-1/16
3-5/16
I.D.
3/8
O.D. 3/4
I.D. 5/8 O.D. 1/2
I.D. 1/2 I.D. 1/4
X2
4-3/8 4-3/8
Multi-frame
Connector
Install the branch pipe between the outdoor units so that the outlet pipe is parallel with the surface.
A
B
To
outdoor unit
To
branch piping or indoor unit
A
B
Viewed from point A
in direction of arrow
Within ±10º
Facing up
Facing down
Within ±3° Within ±3°
Blow nitrogen while
brazing
Do not cut this pipe shorter
than 2-3/4 inches long
For Triple-Frame Systems
For Dual-Frame Systems
ACCESSORIES
Outdoor Unit Y-Branches
Outdoor Unit Y-branches for Heat Recovery Configuration
For Dual-Frame Systems
For Triple-Frame Systems
ACCESSORIES
Outdoor Unit Y-Branches
Combination specification
Combination specification
Low-pressure Vapor Pipe Liquid Pipe High-pressure Vapor Pipe
Multi-frame
Connector
ARCNB21
ARCNB21
ARCNB31
Liquid Pipe
Unit: inch
Unit: inch
Low-pressure Vapor Pipe High-pressure Vapor Pipe
B
A
Multi-frame
Connector
5-1/8
16-3/8
4.2
I.D.
1-1/8
I.D.
1-1/8
I.D. 1-3/8
I.D.
1-5/8
I.D.
1-1/2
O.D.
1-3/8
I.D. 1-1/4
I.D.
7/8
I.D.
1-1/8
4-3/8
4-3/4
I.D. 3/4
I.D. 7/8
O.D. 1-1/8
I.D.
5/8
I.D.
5/8
I.D. 5/8
I.D.
3/4 I.D. 1/2
I.D. 1/2
I.D.
3/8
13-1/16
2-3/4
12-3/8
I.D. 7/8 O.D. 3/4
3-5/16
I.D. 1/2
4-3/8
O.D. 5/8 I.D. 3/8
O.D. 1 I.D. 7/8 I.D. 3/4
4-3/4
X2
O.D. 3/4
I.D. 5/8
I.D. 1/2
4-3/8
O.D.1I.D. 7/8
3-/16
O.D. 1/2 I.D. 3/8
2-3/4
17-7/8
19-5/16
4-3/8
I.D. 1-1/8
I.D.1-3/8 I.D. 1-1/8
I.D.1-1/4
I.D. 1
I.D. 1-1/4
I.D. 1
I.D. 1-1/8
I.D.1-1/4
5-1/8
16-3/8
4.2
I.D.
1-1/8
I.D.
1-1/8
I.D. 1-3/8
I.D.
1-5/8
I.D.
1-1/2
O.D.
1-3/8
I.D. 1-1/4
I.D.
7/8
I.D.
1-1/8
4-3/8
4-3/4
I.D. 3/4
I.D. 7/8
O.D. 1-1/8
I.D.
5/8
I.D.
5/8
I.D. 5/8
I.D.
3/4 I.D. 1/2
I.D. 1/2
I.D.
3/8
13-1/16
2-3/4
12-3/8
I.D. 7/8 O.D. 3/4
3-5/16
I.D. 1/2
4-3/8
O.D. 5/8 I.D. 3/8
O.D. 1 I.D. 7/8 I.D. 3/4
4-3/4
X2
O.D. 3/4
I.D. 5/8
I.D. 1/2
4-3/8
O.D.1I.D. 7/8
3-/16
O.D. 1/2 I.D. 3/8
2-3/4
17-7/8
19-5/16
4-3/8
I.D. 1-1/8
I.D.1-3/8 I.D. 1-1/8
I.D.1-1/4
I.D. 1
I.D. 1-1/4
I.D. 1
I.D. 1-1/8
I.D.1-1/4
16
4-3/8
4-15/16
13-15/16
I.D. 1-3/8
I.D.
1-5/8
I.D. 1-1/2
I.D.
1-5/8
O.D.
1-3/8
I.D.
1-1/8
I.D. 1-3/8
4-3/4
I.D.
3/4
I.D. 7/8
O.D. 1-1/8
I.D.
3/8
3-5/16
I.D.
5/8
I.D.
3/4
I.D.
3/4
I.D.
1/2
I.D.
7/8
13-3/16
11-1/16
O.D. 3/4
I.D. 5/8 O.D. 1/2
I.D. 1/2 I.D. 1/4
X2
4-3/8 4-3/8
18-9/16
20-3/8
4-15/16
I.D. 1-5/8
I.D. 1-1/2
I.D. 1-1/2
I.D. 1-3/8
I.D. 1-3/8
I.D. 1-3/8
I.D. 1-1/8
5-1/8
I.D. 1/2
I.D.
3/4
I.D. 7/8
I.D. 1-5/8 I.D.1-1/2
I.D.1-5/8
O.D. 1-3/8
O.D. 1-1/2
O.D. 1-1/8
O.D. 5/8
3-9/16
2-3/4 4-3/4
4-3/4
I.D. 3/4 I.D. 5/8
O.D. 7/8
I.D. 1-1/8
I.D. 7/8
B
38 |WSU PRODUCT DATA WSU PRODUCT DATA | 39
Water Source Unit Product Data
MULTI V Water V Water Source Unit Engineering Manual
© LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp. © LG Electronics Canada, Inc., North York, ON Canada. All rights reserved. “LG” is a registered trademark of LG Corp.
ACCESSORIES
Unit: Inch
4 branch
ARBL054
7 branch
ARBL057
4 branch
ARBL104
7 branch
ARBL107
10 branch
ARBL1010
10 branch
ARBL2010
Models Vapor pipe Liquid pipe
14-3/16
21-1/4 21-1/4
4-3/4
I.D. 5/8
I.D. 1/2
I.D. 1/2
I.D. 5/8
I.D. 5/8
I.D. 3/4
4-3/4
14-3/16
I.D. 3/8
I.D. 3/8
I.D. 1/4
I.D. 1/4
I.D. 3/8
I.D. 1/2
5-15/16
5-15/16
5-15/16 5-15/16
5-15/16
15-3/4
6-5/16
I.D. 5/8
I.D. 1/2
I.D. 3/4
I.D. 5/8
I.D 7/8
I.D. 1-1/8 I.D. 1
4-3/4
4-3/4
4-3/4 4-3/4
4-3/4
4-3/4
4-3/4
4-3/4 4-3/4
4-3/4
I.D. 5/8
I.D. 1/2
I.D. 5/8
I.D. 1/2
I.D. 5/8
I.D. 3/4
4-3/4
I.D. 1/4
I.D. 3/8
I.D. 3/8
I.D. 1/2
6-5/16
22-7/8
I.D. 3/4
I.D. 5/8
ID15.88(5/8)
ID12.7(1/2)
I.D. 5/8
I.D. 1/2
I.D. 7/8
I.D. 1-1/8 I.D. 1
27-9/16
4-3/4
I.D. 1/4
I.D. 3/8
I.D. 3/8
I.D. 1/4
I.D. 3/8I.D. 1/2
I.D. 5/8
I.D. 1/2
4-3/4
28-3/8
I.D. 1/4
I.D. 3/8
I.D. 3/8
I.D. 1/4
I.D. 1/2
I.D. 3/8
4-1/4
21-1/2
27-9/16
I.D. 1/4
I.D. 3/8 I.D. 3/4
I.D. 5/8
I.D. 3/8
I.D. 1/4
4-3/4
4-3/4
6-5/16
29-7/8
I.D. 3/4
I.D. 5/8
I.D. 7/8
I.D. 1-1/8 I.D. 1
7-3/16
30-9/16
I.D. 3/4
I.D. 5/8
I.D. 5/8
I.D. 1/2
I.D. 1-1/8
I.D. 1-1/4
I.D. 1-3/8
5-15/16
5-15/16
5-15/16
5-15/16
5-15/16
5-15/16
5-15/16
4-3/4
4-3/4
14-3/16
I.D. 3/8
I.D. 3/8
I.D. 1/4
I.D. 1/4
I.D. 3/8
I.D. 1/2
Headers for Heat Pump and Heat Recovery Configuration
Headers
ACCESSORIES
• LG headers serve as central connections for multiple runout pipe segments
terminating at indoor units.
• Headers must be used with LG systems and be properly installed following the
instructions in the applicable LG manual. Field-supplied headers are not permitted.
• Kit components must be kept free of debris and dry before installation.
• All Header Kits include:
- Insulation jacket (one each for vapor and liquid pipes)
- Plugging tubes / Insulation for plugging tubes (see Table 26).
Model Fitting Capacity Port Capacity
ARBL054 (4 branch) ≤72,000 connected capacity ≤54,300 per port
ARBL057 (7 branch) ≤75,100 connected capacity ≤54,300 per port
ARBL1010 (10 branch) ≤172,200 connected capacity ≤76,300 per port
ARBL104 (4 branch) ≤305,200 connected capacity ≤76,300 per port
ARBL107 (7 branch) ≤534,000 connected capacity <76,300 per port
ARBL2010 (10 branch) ≤560,000 connected capacity ≤76,300 per port
Table 7: Nominal Capacity Range.
Table 8: Plugging Tubes and Plugging Tube Insulation Amounts.
Header Kits
Plugging Tubes (in OD)
Insulation for Plugging Tubes
1/4 1/2 5/8
ARBL054 (4 port) — — — —
ARBL057 (7 port) 2 2 — 4
ARBL1010 (10 port) 2 2 2 6
ARBL104 (4 port) — — — —
ARBL107 (7 port) 2 2 2 6
ARBL2010 (10 port) 2 2 2 6
Table 9: Insulation Jacket Properties.
Material Polyolefin Foam
UL94 Flame Classication HF-1
Density 1.84 lbs./ft.3
Thermal Conductivity .0208 Btu/h/ft. ºF
Thickness 1/2 inch
Material Copper
Design Pressure 550 psig
Table 10: Fitting Properties.
Headers
Figure 7: Header.
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