*Plasma lter kit accessories are available separately. Always follow all local, state, and national building codes with the use of
this or any product.
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 www.myLGHVAC.com, or contact 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.
Figure 1:Example of LATS CAD2.
Features
All LG product design criteria have been loaded into the program,
making LATS simple to use: double click or drag and drop the component 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:
• 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.
Introduction
Features depend on which LATS program is being used, and the type of system being designed.
Due to our policy of continuous product innovation, some specications may change without notication.
LATS software also generates a report containing project design parameters, cooling and heating design data, system component performance, 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:
Figure 2:Example of a LATS Tree Diagram.
• 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 software 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.
MULTI V Ducted Indoor Unit Engineering Manual
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.
6 | INTRODUCTION
Due to our policy of continuous product innovation, some specications may change without notication.
Line #DescriptionChassis I.D.SizeQuantityCF (Ref.)
1Linear feet of 1/4" liquid line tubing
2Linear feet of 3/8" liquid line tubing
3Linear feet of 1/2" liquid line tubing
4Linear feet of 5/8" liquid line tubing
5Linear feet of 3/4" liquid line tubing
6Linear feet of 7/8" liquid line tubing
7Linear feet of 1" liquid line tubing
8Standard + Art Cool MirrorSJ, SK5k to 15k0.53
9Standard + Art Cool MirrorSJ, SK18k to 24k0.62
10StandardSV30k to 36k1.01
11Art Cool GallerySF9k to 12k0.22
121-Way CassetteTU7k to 12k0.44
131-Way CassetteTT18k to 24k0.64
142-Way CassetteTS18k to 24k0.75
154-Way 2' x 2' CassetteTR5k to 7k0.40
164-Way 2' x 2' CassetteTR9k to 12k0.55
174-Way 2' x 2' CassetteTQ15k to 18k0.71
184-Way 3' x 3' CassetteTN7k to 24k0.88
194-Way 3' x 3' CassetteTM28k to 36k1.08
204-Way 3’ x 3’ CassetteTM42k to 48k1.41
21High Static DuctedBH7k to 24k0.57
22High Static DuctedM27k to 24k0.77
23High Static DuctedM228k to 42k1.15
24High Static DuctedM328k to 54k1.35
25High Static DuctedB836k to 96k2.20
26Low Static Ducted, Low Static Ducted Bottom ReturnL15k to 9k0.31
27Low Static Ducted, Low Static Ducted Bottom ReturnL212k to 18k0.42
28Low Static Ducted, Low Static Ducted Bottom ReturnL321k to 24k0.55
29Vertical / Horizontal Air Handling UnitNJ12k to 30k1.04
30Vertical / Horizontal Air Handling UnitNJ36k1.57
31Vertical / Horizontal Air Handling UnitNK42k to 54k2.00
32Floor StandingCE (U)7k to 15k0.37
Line #DescriptionChassis I.D.SizeQuantityCF (Ref.)
1Linear feet of 1/4" liquid line tubing
2Linear feet of 3/8" liquid line tubing
3Linear feet of 1/2" liquid line tubing
4Linear feet of 5/8" liquid line tubing
5Linear feet of 3/4" liquid line tubing
6Linear feet of 7/8" liquid line tubing
7Linear feet of 1" liquid line tubing
8Standard + Art Cool MirrorSJ, SK5k to 15k0.53
9Standard + Art Cool MirrorSJ, SK18k to 24k0.62
10StandardSV30k to 36k1.01
11Art Cool GallerySF9k to 12k0.22
121-Way CassetteTU7k to 12k0.44
131-Way CassetteTT18k to 24k0.64
142-Way CassetteTS18k to 24k0.75
154-Way 2' x 2' CassetteTR5k to 7k0.40
164-Way 2' x 2' CassetteTR9k to 12k0.55
174-Way 2' x 2' CassetteTQ15k to 18k0.71
184-Way 3' x 3' CassetteTN7k to 24k0.88
194-Way 3' x 3' CassetteTM28k to 36k1.08
204-Way 3’ x 3’ CassetteTM42k to 48k1.41
21High Static DuctedBH7k to 24k0.57
22High Static DuctedM27k to 24k0.77
23High Static DuctedM228k to 42k1.15
24High Static DuctedM328k to 54k1.35
25High Static DuctedB836k to 96k2.20
26Low Static Ducted, Low Static Ducted Bottom ReturnL15k to 9k0.31
27Low Static Ducted, Low Static Ducted Bottom ReturnL212k to 18k0.42
28Low Static Ducted, Low Static Ducted Bottom ReturnL321k to 24k0.55
29Vertical / Horizontal Air Handling UnitNJ12k to 30k1.04
30Vertical / Horizontal Air Handling UnitNJ36k1.57
31Vertical / Horizontal Air Handling UnitNK42k to 54k2.00
32Floor StandingCE (U)7k to 15k0.37
33Floor StandingCF (U)18k to 24k0.82
34HRU: PRHR022A/023A, 032A/033A, 042A/043A, 063A, 083A——1.1
35ADDITIONAL Refrigerant Charge Required (Sum of lines 1 – 34)
MULTI V Ducted Indoor Unit Engineering Manual
36
37
38
1
CF (Ref.) = Correction Factor for Refrigerant Charge. 2For refrigerant charge purposes, consider only the liquid line; ignore the vapor line(s).
Water-Source Unit Factory
Refrigerant Charge
Total WSU FACTORY Refrigerant Charge (Sum of factory refrigerant charges for all WSUs in the system)
Sum of Additional Refrigerant Charge Required (line 35) and Total WSU Factory Refrigerant Charge (line 37)
Line #DescriptionChassis I.D.SizeQuantityCF (Ref.)
1Linear feet of 1/4" liquid line tubing
2Linear feet of 3/8" liquid line tubing
3Linear feet of 1/2" liquid line tubing
4Linear feet of 5/8" liquid line tubing
5Linear feet of 3/4" liquid line tubing
6Linear feet of 7/8" liquid line tubing
7Linear feet of 1" liquid line tubing
8Standard + Art Cool MirrorSJ, SK5k to 15k0.53
9Standard + Art Cool MirrorSJ, SK18k to 24k0.62
10StandardSV30k to 36k1.01
11Art Cool GallerySF9k to 12k0.22
121-Way CassetteTU7k to 12k0.44
131-Way CassetteTT18k to 24k0.64
142-Way CassetteTS18k to 24k0.75
154-Way 2' x 2' CassetteTR5k to 7k0.40
164-Way 2' x 2' CassetteTR9k to 12k0.55
174-Way 2' x 2' CassetteTQ15k to 18k0.71
184-Way 3' x 3' CassetteTN7k to 24k0.88
194-Way 3' x 3' CassetteTM28k to 36k1.08
204-Way 3’ x 3’ CassetteTM42k to 48k1.41
21High Static DuctedBH7k to 24k0.57
22High Static DuctedM27k to 24k0.77
23High Static DuctedM228k to 42k1.15
24High Static DuctedM328k to 54k1.35
25High Static DuctedB836k to 96k2.20
26Low Static Ducted, Low Static Ducted Bottom ReturnL15k to 9k0.31
27Low Static Ducted, Low Static Ducted Bottom ReturnL212k to 18k0.42
28Low Static Ducted, Low Static Ducted Bottom ReturnL321k to 24k0.55
29Vertical / Horizontal Air Handling UnitNJ12k to 30k1.04
30Vertical / Horizontal Air Handling UnitNJ36k1.57
31Vertical / Horizontal Air Handling UnitNK42k to 54k2.00
32Floor StandingCE (U)7k to 15k0.37
33Floor StandingCF (U)18k to 24k0.82
34HRU: PRHR022A/023A, 032A/ 033A, 042A/ 043A, 063A, 083A——1.1
35ADDITIONAL Refrigerant Charge Required (Sum of lines 1 – 34)
36
37
1
CF (Ref.) = Correction Factor for Refrigerant Charge. 2For refrigerant charge purposes, consider only the liquid line; ignore the vapor line(s).
Total ODU FACTORY Refrigerant Charge
(Choose One)
Sum of Additional Refrigerant Charge Required (line 35) and Total ODU Factory Refrigerant Charge (from lines 36A through 36G)
The case is designed to mount concealed above a finished ceiling.
Fan supply air is front horizontal with a dedicated rear horizontal
return. The unit is manufactured with coated metal. Cold surfaces
are covered with a coated polystyrene insulating material. The cold
surface areas of the case are covered externally with sheet insulation made of Ethylene Propylene Diene Monomer (M-Class) (EPDM)
conforming to ASTM Standard D-1418. The case is provided with
hanger brackets designed to support the unit weight on four corners.
Hanger brackets have pre-punched holes designed to accept field
supplied, all-thread rod hangers.
Fan Assembly and Control
The unit has Sirocco fans made of high strength ABS GP-2200
polymeric resin. Fans are directly driven and mounted on a common
shaft. The fan motor is a Brushless Digitally Controlled (BLDC)
design with permanently lubricated and sealed ball bearings. The
fan motor includes thermal, overcurrent and low RPM protection.
The fan / motor assembly is mounted on vibration attenuating rubber
grommets. The fan impeller is statically and dynamically balanced.
The fan speed is controlled using a microprocessor based, direct
digital control algorithm that provides a high fan speed in cooling
thermal ON and low fan speed in cooling thermal OFF, high fan
speed in heating thermal ON and fan off in heating thermal OFF. The
fan speeds can be field adjusted between low, medium, and high
speeds and DIP switch settings will allow the fan to run constantly
during defrost or oil return modes. Each setting can be field adjusted
from the factory setting (RPM / ESP) to compensate for additional
resistance to airflow caused by field connected ductwork or other
airflow restricting devices.
Air Filter
Return air is filtered with a removable, washable filter with antifungal
treatment. MERV 13 filter modules with plenums available.
Microprocessor Controls
The unit is provided with an integrated microprocessor-based controller. The controller is capable of performing functions necessary
to operate the system without the use of a wall-mounted controller.
A temperature thermistor is factory-mounted in the return air stream.
All unit operation parameters, excluding the unit operating schedule,
are stored in non-volatile memory resident on the unit microprocessor. Operating schedules are stored in select models of the optional,
wall-mounted, local, or central controller. The field supplied communication cable between the indoor unit(s) and outdoor unit is to be
a minimum of 18 AWG, 2-conductor, stranded, and shielded cable
(RS-485), terminated via screw terminals on the control boards.
The microprocessor control provides the following functions: auto
addressing, self-diagnostics, auto restart following power restoration,
test run, and will operate the indoor unit using one of five operating
modes:
1. Auto Changeover (Heat Recovery only)
2. Heating
3. Cooling
4. Dry
5. Fan Only
For Heat Recovery systems the Auto Changeover setting automatically switches control of the indoor unit between cooling and heating
modes based on space temperature conditions.
For Heat Pump systems, heated or cooled air delivery is dependent
upon outdoor unit operating mode.
Due to our policy of continuous product innovation, some specications may change without notication.
In Heating mode, the
microprocessor control
will activate the indoor unit
when indoor room
temperature falls below
setpoint temperature and
signals the outdoor unit to begin heating cycle. The indoor unit fan
operation is delayed until coil pipe temperature reaches 76ºF. Significant airflow is generated when pipe temperature reaches 80°F. In
lieu of factory return air thermistor, screw terminals on the microprocessor circuit board accommodate various models of wall-mounted
local controllers and/or a wall-mounted remote temperature sensor.
The unit microprocessor is capable of accepting space temperature
readings concurrently or individually from either:
1. Wall-mounted wired controller(s)
2. Factory mounted return air thermistor or the optional wall mounted wired remote temperature sensor
A single indoor unit has the capability of being controlled by up to
two local wired controllers. The microprocessor controls space
temperature using the value provided by the temperature sensor
sensing a space temperature that is farthest away from the temperature set-point. The microprocessor control provides a cooling or
heating mode test cycle that operates the unit for 18 minutes without
regard to the space temperature. If the system is provided with an
optional wall-mounted local or central controller, displayed diagnostic
codes are specific, alpha numeric, and provide the service technician
with a reason for the code displayed.
Condensate Lift/Pump
The indoor unit is provided with a factory installed and wired condensate lift/pump capable of providing a minimum 27.5 inch lift from the
bottom exterior surface of the unit casing. The unit drain pan is provided with a secondary drain port/plug allowing the pan to be drained
for service. The lift pump comes with a safety switch that will shut off
indoor unit if condensate rises too high in the drain pan.
Condensate Drain Pan
The condensate drain pan is constructed of high impact polystyrene
resin (HIPS).
Coil
The indoor unit coil is constructed with grooved design copper tubes
with slit coil fins, two (2) to three (3) rows, nineteen (19) to
twenty-one (21) fins per inch.
Controls Features
• Auto changeover
(Heat Recovery only)
• Auto operation
• Auto restart
• External on/off control
• Dual thermistor control
• Dual setpoint control*
• Filter life display*
• Multiple auxiliary heater
applications*
• Group control
• External static pressure control
• Hot start
• Self diagnostics
• Timer (on / off)
• Weekly schedule
• Fan speed control
• Ventilation (outside air)
• Wi-Fi compatible
• Auto fan
• Leak detection
*To enable Generation 4 features, outdoor unit DIP Switch No. 3 must be set
to ON. Please refer to the Multi V IV,
Multi V Water IV, Multi V S Engineering
Manual for additional information.
HIGH STATIC | 11
Ducted High Static
DUCTED HIGH STATIC
General Data
BH Units
Table 1: Ducted High Static (BH Frame) Indoor Unit General Data.
Model No.ARNU073BHA4 ARNU093BHA4 ARNU123BHA4 ARNU153BHA4 ARNU183BHA4 ARNU243BHA4
Cooling Mode Performance
Capacity (Btu/h)
Power Input1 (W)
L/M/H Power Input at Factory Default (W)
Heating Mode Performance
Capacity (Btu/h)
Power Input1 (W)
L/M/H Power Input at Factory Default (W)
Entering Mixed Air
Cooling Max. (°F WB)
Heating Min. (°F DB)
2
Unit Data
Refrigerant Type3
Refrigerant Control
Sound Pressure4 dB(A) (H/M/L)
Net Unit Weight (lbs.)
Shipping Weight (lbs.)
Communication Cable5
(No. x AWG)
Fan
Type
Motor
Housing
Motor/Drive
Airflow Rate H/M/L (CFM)
Standard Mode
Airflow Rate H/M/L (CFM)
High Mode (Factory Set)
MULTI V Ducted Indoor Unit Engineering Manual
External Static Pressure (in. wg)
Standard Mode
External Static Pressure (in. wg)
High Mode (Factory Set)
Piping
Liquid Line (in., O.D.)
Vapor Line (in., O.D.)
Condensate Line (in., I.D.)
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1
Max. power input is rated at maximum setting value.
2
Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5
All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.
12 | HIGH STATIC
Due to our policy of continuous product innovation, some specications may change without notication.
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1
Max. power input is rated at maximum setting value.
2
Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Source Units produced after February 2019.
1/4 Flare1/4 Flare1/4 Flare1/4 Flare1/4 Flare
1/2 Flare1/2 Flare1/2 Flare1/2 Flare1/2 Flare
11111
DUCTED HIGH STATIC
General Data
M2 Units
Brushless Digitally Controlled / Direct
3
Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5
All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.
Ducted High Static
Due to our policy of continuous product innovation, some specications may change without notication.
Table 3: Ducted High Static (M2 Frame) Indoor Unit General Data, continued.
Model No.ARNU243M2A4ARNU283M2A4ARNU363M2A4ARNU423M2A4
Cooling Mode Performance
Capacity (Btu/h)
Max Power Input1 (W)
L/M/H Power Input at Factory Default (W)
Heating Mode Performance
Capacity (Btu/h)
Max Power Input1 (W)
L/M/H Power Input at Factory Default (W)
Entering Mixed Air
Cooling Max. (°F WB)
Heating Min. (°F DB)
2
Unit Data
Refrigerant Type3
Refrigerant Control
Sound Pressure4 dB(A) (H/M/L)
Net Unit Weight (lbs.)
Shipping Weight (lbs.)
Communication Cable5 (No. x AWG)
Fan
Type
Motor
Housing
Motor/Drive
Airflow Rate H/M/L (CFM)
Standard Mode
Airflow Rate H/M/L (CFM)
High Mode (Factory Set)
External Static Pressure (in. wg)
MULTI V Ducted Indoor Unit Engineering Manual
Standard Mode
External Static Pressure (in. wg)
High Mode (Factory Set)
Piping
Liquid Line (in., O.D.)
Vapor Line (in., O.D.)
Condensate Line (in., I.D.)
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1
Max. power input is rated at maximum setting value.
2
Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5
All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.
14 | HIGH STATIC
Due to our policy of continuous product innovation, some specications may change without notication.
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1
Max. power input is rated at maximum setting value.
2
Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Source Units produced after February 2019.
3/8 Flare3/8 Flare3/8 Flare3/8 Flare3/8 Flare
5/8 Flare5/8 Flare5/8 Flare5/8 Flare5/8 Flare
11111
DUCTED HIGH STATIC
General Data
M3 Units
Brushless Digitally Controlled / Direct
3
Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5
All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.
Ducted High Static
Due to our policy of continuous product innovation, some specications may change without notication.
Table 5: Ducted High Static (B8 Frames) Indoor Unit General Data.
Model No.ARNU363B8A4ARNU423B8A4ARNU483B8A4 ARNU763B8A4 ARNU963B8A4
Cooling Mode Performance
Capacity (Btu/h)
Power Input1 (W)
L/M/H Power Input at Factory Default (W)
Heating Mode Performance
Capacity (Btu/h)
Power Input1 (W)
L/M/H Power Input at Factory Default (W)
Entering Mixed Air
Cooling Max. (°F WB)
Heating Min. (°F DB)
2
Unit Data
Refrigerant Type3
Refrigerant Control
Sound Pressure4 dB(A) (H/M/L)
Net Unit Weight (lbs.)
Shipping Weight (lbs.)
Communication Cable5 (No. x AWG)
Fan
Type
Motor
Housing
Motor/Drive
Airflow Rate H/M/L (CFM)
Standard Mode
Airflow Rate H/M/L (CFM)
High Mode (Factory Set)
External Static Pressure (in. wg)
MULTI V Ducted Indoor Unit Engineering Manual
Standard Mode
External Static Pressure (in. wg)
High Mode (Factory Set)
Piping
Liquid Line (in., O.D.)
Vapor Line (in., O.D.)
Condensate Line (in., I.D.)
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1
Max. power input is rated at maximum setting value.
2
Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5
All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.
16 | HIGH STATIC
Due to our policy of continuous product innovation, some specications may change without notication.
Table 6: Ducted High Static Indoor Unit Electrical Data.
Rated
ModelVoltage RangeMCAMOP
Amps
(A)
BH Units
ARNU073BHA4
ARNU093BHA41.321.0615015052 / 58 / 67
ARNU123BHA41.321.0615015058 / 67 / 78
ARNU153BHA41.321.0615015058 / 78 / 90
ARNU183BHA41.321.0615015078 / 90 / 103
ARNU243BHA41.321.06150150103 / 117 / 132
208-230
1.32
1.06
15
M2 Units
ARNU073M2A4
ARNU093M2A42.92.343043021 / 29 / 38
ARNU123M2A42.92.343043025 / 34 / 43
ARNU153M2A42.92.343043025 / 34 / 43
ARNU183M2A42.92.343043034 / 43 / 67
ARNU243M2A42.92.343043034 / 43 / 67
ARNU283M2A42.92.343043057 / 88 / 123
ARNU363M2A42.92.343043088 / 123 / 184
ARNU423M2A42.92.3430430136 / 193 / 231
208-230
2.9
2.3
15
M3 Units
ARNU283M3A4
ARNU363M3A43.12.565065075 / 107 / 161
ARNU423M3A43.12.565065075 / 107 / 161
ARNU483M3A43.12.565065075 / 107 / 172
ARNU543M3A43.12.5650650172 / 215 / 260
208-230
3.1
2.5
15
B8 Units
ARNU363B8A4
ARNU423B8A46.55.2800800465 / 497 / 528
ARNU483B8A46.55.2800800482 / 500 / 538
ARNU763B8A46.55.2800800505 / 505 / 765
ARNU963B8A4
208-230
6.5
15
6.55.2800800750 / 750 / 800
5.2
Power SupplyPower Input (W)
HzVoltsPhase
60208-2301
60208-2301
60208-2301
60208-2301
Max.
Cooling
15015049 / 52 / 58
43043021 / 29 / 38
65065060 / 83 / 109
800800403 / 420 / 478
Max.
Heating
L / M / H at
Factory Default
Ducted High Static
MCA : Minimum Circuit Ampacity.
MOP : Maximum Overcurrent Protection.
Units are suitable for use on an electrical system where voltage supplied to unit terminals is within the listed range limits.
Select wire size based on the larger MCA value.
Instead of fuse, use the circuit breaker.
Max. power input is rated at maximum setting value.
Due to our policy of continuous product innovation, some specications may change without notication.
CN-EXTExternal on / off controllerExternal on / off Controller connection
CN-EEVEEV OutputEEV control output
CN-OPTIONOptional PCB EPROMOption PCB connection
CN-DISPLAYDisplayDisplay of indoor status
CN-PTCAuxiliary heaterConnection for Auxiliary Heater
CN-CCDry contactDry Contact connection
CN-HUMIDN / AN / A
CN-LEAKLeak detectorLeak detector connection
CN-FLOATFloat switch inputFloat switch sensing
CN-PIPE/OUTDischarge pipe sensorPipe out thermistor
CN-WFWi-FiWi-Fi module connection
CN-AIRCN / AN / A
CN-PIPE/INSuction pipe sensorPipe in thermistor
CN-ROOMRoom sensorRoom air thermistor
CN-REMOWired remote controllerWired remote control connection
CN-D/PUMPDrain pump outputAC output for drain pump
CN-485CommunicationConnection between indoor and outdoor units
DUCTED HIGH STATIC
Electrical Wiring Diagram
BH Units
Ducted High Static
Table 8: BH Unit DIP Switch Settings.
DIP Switch SettingOffOnRemarks
SW3GROUP CONTROLMasterSlave
SW4
SW5CONTINUOUS FANOffOn
*For Gen 4 Multi V ducted indoor units, DIP Switches 1, 2, 6 through 8 must be set to OFF. These DIP switches are used for
other models.
**To enable Generation 4 features, outdoor unit DIP Switch No. 3 must be set to ON. Please refer to the Multi V IV, Multi V Water IV, Multi V S Engineering Manual for additional information.
DRY CONTACT
MODE
VariableAuto
Due to our policy of continuous product innovation, some specications may change without notication.
Group control setting using 7-Day Programmable Controller; selects Master /
Slave on each indoor unit
Sets operation mode for optional Dry Contact accessory
1. Variable: Auto or Manual Mode can be set through 7-Day Programmable
Controller or Wireless Remote Controller (factory default setting is Auto if
there is no setting)
2. Auto: For Dry Contact, it is always Auto mode
Selects continuous fan for ducted indoor units.
1. On: Indoor unit fan will always operate at a set fan speed, except when
the system is off, or the outdoor unit is in defrost mode (when the outdoor
unit is in defrost mode, the fan will operate at super low fan speed)
2. Off: Indoor unit fan speed can be changed by on / off
HIGH STATIC | 23
DUCTED HIGH STATIC
Electrical Wiring Diagram
M2 Units
Figure 8: ARNU073~423M2A4 Wiring Diagram.
MULTI V Ducted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
CN-VMSub PCB to Main PCB power supplyPower supply connection
CN-DAMPERN / AN / A
CN-ZONEZone controllerZone controller connection
CN-EXTExternal on / off controllerExternal on / off Controller connection
CN-EEVEEV OutputEEV control output
CN-OPTIONOptional PCB EPROMOption PCB connection
CN-DISPLAYDisplayDisplay of indoor status
CN-PTCAuxiliary heaterConnection for Auxiliary Heater
CN-CCDry contactDry Contact connection
CN-HUMIDN / AN / A
CN-LEAKLeak detectorLeak detector connection
CN-FLOATFloat switch inputFloat switch sensing
CN-PIPE/OUTDischarge pipe sensorPipe out thermistor
CN-WFWi-FiWi-Fi module connection
CN-AIRCN / AN / A
CN-PIPE/INSuction pipe sensorPipe in thermistor
CN-ROOMRoom sensorRoom air thermistor
CN-REMOWired remote controllerWired remote control connection
CN-D/PUMPDrain pump outputAC output for drain pump
CN-485CommunicationConnection between indoor and outdoor units
DUCTED HIGH STATIC
Electrical Wiring Diagram
M2 Units
Ducted High Static
Table 10: M2 Unit DIP Switch Settings.
DIP Switch SettingOffOnRemarks
SW3GROUP CONTROLMasterSlave
SW4
SW5CONTINUOUS FANOffOn
*For Gen 4 Multi V ducted indoor units, DIP Switches 1, 2, 6 through 8 must be set to OFF. These DIP switches are used for
other models.
**To enable Generation 4 features, outdoor unit DIP Switch No. 3 must be set to ON. Please refer to the Multi V IV, Multi V Water IV, Multi V S Engineering Manual for additional information.
DRY CONTACT
MODE
VariableAuto
Due to our policy of continuous product innovation, some specications may change without notication.
Group control setting using 7-Day Programmable Controller; selects Master /
Slave on each indoor unit
Sets operation mode for optional Dry Contact accessory
1. Variable: Auto or Manual Mode can be set through 7-Day Programmable
Controller or Wireless Remote Controller (factory default setting is Auto if
there is no setting)
2. Auto: For Dry Contact, it is always Auto mode
Selects continuous fan for ducted indoor units.
1. On: Indoor unit fan will always operate at a set fan speed, except when
the system is off, or the outdoor unit is in defrost mode (when the outdoor
unit is in defrost mode, the fan will operate at super low fan speed)
2. Off: Indoor unit fan speed can be changed by on / off
HIGH STATIC | 25
DUCTED HIGH STATIC
Electrical Wiring Diagram
M3 Units
Figure 9: ARNU283~ARNU543M3A4 Wiring Diagram.
MULTI V Ducted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
CN-VMSub PCB to Main PCB power supplyPower supply connection
CN-DAMPERN / AN / A
CN-ZONEZone controllerZone controller connection
CN-EXTExternal on / off controllerExternal on / off Controller connection
CN-EEVEEV OutputEEV control output
CN-OPTIONOptional PCB EPROMOption PCB connection
CN-DISPLAYDisplayDisplay of indoor status
CN-PTCAuxiliary heaterConnection for Auxiliary Heater
CN-CCDry contactDry Contact connection
CN-LEAKLeak detectorLeak detector connection
CN-FLOATFloat switch inputFloat switch sensing
CN-PIPE/OUTDischarge pipe sensorPipe out thermistor
CN-WFWi-FiWi-Fi module connection
CN-HUMIDN / AN / A
CN-AIRCN / AN / A
CN-PIPE/INSuction pipe sensorPipe in thermistor
CN-ROOMRoom sensorRoom air thermistor
CN-REMOWired remote controllerWired remote control connection
CN-D/PUMPDrain pump outputAC output for drain pump
CN-485CommunicationConnection between indoor and outdoor units
DUCTED HIGH STATIC
Electrical Wiring Diagram
M3 Units
Ducted High Static
Table 12: M3 Unit DIP Switch Settings.
DIP Switch SettingOffOnRemarks
SW3GROUP CONTROLMasterSlave
SW4
SW5CONTINUOUS FANOffOn
*For Gen 4 Multi V ducted indoor units, DIP Switches 1, 2, 6 through 8 must be set to OFF. These DIP switches are used for
other models.
**To enable Generation 4 features, outdoor unit DIP Switch No. 3 must be set to ON. Please refer to the Multi V IV, Multi V Water IV, Multi V S Engineering Manual for additional information.
DRY CONTACT
MODE
VariableAuto
Due to our policy of continuous product innovation, some specications may change without notication.
Group control setting using 7-Day Programmable Controller; selects Master /
Slave on each indoor unit
Sets operation mode for optional Dry Contact accessory
1. Variable: Auto or Manual Mode can be set through 7-Day Programmable
Controller or Wireless Remote Controller (factory default setting is Auto if
there is no setting)
2. Auto: For Dry Contact, it is always Auto mode
Selects continuous fan for ducted indoor units.
1. On: Indoor unit fan will always operate at a set fan speed, except when
the system is off, or the outdoor unit is in defrost mode (when the outdoor
unit is in defrost mode, the fan will operate at super low fan speed)
2. Off: Indoor unit fan speed can be changed by on / off
HIGH STATIC | 27
DUCTED HIGH STATIC
Electrical Wiring Diagram
B8 Units
Figure 10: ARNU363~963B8A4 Wiring Diagram.
MULTI V Ducted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
CN-VMSub PCB to Main PCB power supplyPower supply connection
CN-DAMPERN / AN / A
CN-ZONEZone controllerZone controller connection
CN-EXTExternal on / off controllerExternal on / off Controller connection
CN-EEVEEV OutputEEV control output
CN-OPTIONOptional PCB EPROMOption PCB connection
CN-DISPLAYDisplayDisplay of indoor status
CN-PTCAuxiliary heaterConnection for Auxiliary Heater
CN-CCDry contactDry Contact connection
CN-LEAKLeak detectorLeak detector connection
CN-FLOATFloat switch inputFloat switch sensing
CN-PIPE/OUTDischarge pipe sensorPipe out thermistor
CN-WFWi-FiWi-Fi module connection
CN-HUMIDN / AN / A
CN-AIRCN / AN / A
CN-PIPE/INSuction pipe sensorPipe in thermistor
CN-ROOMRoom sensorRoom air thermistor
CN-REMOWired remote controllerWired remote control connection
CN-D/PUMPDrain pump outputAC output for drain pump
CN-485CommunicationConnection between indoor and outdoor units
DUCTED HIGH STATIC
Electrical Wiring Diagram
B8 Units
Ducted High Static
Table 14: B8 Unit DIP Switch Settings.
DIP Switch SettingOffOnRemarks
SW3GROUP CONTROLMasterSlave
SW4
SW5CONTINUOUS FANOffOn
*For Gen 4 Multi V ducted indoor units, DIP Switches 1, 2, 6 through 8 must be set to OFF. These DIP switches are used for
other models.
**To enable Generation 4 features, outdoor unit DIP Switch No. 3 must be set to ON. Please refer to the Multi V IV, Multi V Water IV, Multi V S Engineering Manual for additional information.
DRY CONTACT
MODE
VariableAuto
Due to our policy of continuous product innovation, some specications may change without notication.
Group control setting using 7-Day Programmable Controller; selects Master /
Slave on each indoor unit
Sets operation mode for optional Dry Contact accessory
1. Variable: Auto or Manual Mode can be set through 7-Day Programmable
Controller or Wireless Remote Controller (factory default setting is Auto if
there is no setting)
2. Auto: For Dry Contact, it is always Auto mode
Selects continuous fan for ducted indoor units.
1. On: Indoor unit fan will always operate at a set fan speed, except when
the system is off, or the outdoor unit is in defrost mode (when the outdoor
unit is in defrost mode, the fan will operate at super low fan speed)
2. Off: Indoor unit fan speed can be changed by on / off
HIGH STATIC | 29
DUCTED HIGH STATIC
Cooling
Refrigerant Flow Diagram
BH, M2, M3 Units
Figure 11: BH, M2, M3 Unit Refrigerant Flow Diagram.
Heat Exchanger
TH3
Sirocco Fan
TH1
Table 15: BH, M2, M3 Unit Refrigerant Pipe Connection Port Diameters.