LG ARNU243BHA4, ARNU073BHA4, ARNU073M2A4, ARNU093M2A4, ARNU153M2A4 Engineering Manual

DUCTED INDOOR UNIT

ENGINEERING MANUAL

High Static Ducted

7,500 to 95,900 Btu/h

Low Static Ducted

7,500 to 24,000 Btu/h

Vertical / Horizontal Air Handler

12,000 to 54,000 Btu/h

PROPRIETARY DATA NOTICE

This document, as well as all reports, illustrations, data, information,

and other materials are the property of LG Electronics U.S.A., Inc., and are

disclosed by LG Electronics U.S.A., Inc. only in confidence.

This document is for design purposes only.

A summary list of safety precautions is on page 3.

For more technical materials such as submittals, catalogs, installation,

owner’s, and service manuals, visit www.lghvac.com.

For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice.

TABLE OF CONTENTS

DANGER

CAUTION

Unit Nomenclature ................................................................................. 4

LATS Overview ...................................................................................5-6

Refrigerant Charge Worksheet .......................................................... 7-9

High Static Ducted Indoor Units ................................................. 10-124

Mechanical Specications ..................................................................11

General Data ................................................................................ 12-16

Electrical Data ................................................................................... 17

External Dimensions ..................................................................... 18-21

Electrical Wiring Diagrams ........................................................... 22-29

Refrigerant Flow Diagrams ........................................................... 30-31

External Static Pressure and Air Flow ..........................................32-37

External Static Pressure Ranges .................................................. 38-42

Acoustic Data ............................................................................... 43-73

Capacity Tables .......................................................................... 74-123

Optional Accessories ....................................................................... 124

Low Static Ducted Indoor Units ................................................ 125-152

Mechanical Specications ............................................................... 126

General Data ................................................................................... 127

Electrical Data ................................................................................. 128

External Dimensions ................................................................. 129-130

Electrical Wiring Diagrams ....................................................... 131-133

Refrigerant Flow Diagrams .............................................................. 134

External Static Pressure and Air Flow ......................................135-136

External Static Pressure Ranges ..................................................... 137

Acoustic Data ........................................................................... 138-140

Capacity Tables ........................................................................ 141-152

Vertical / Horizontal Air Handler Units ...................................... 153-189

Mechanical Specications ........................................................ 154-155

General Data ............................................................................ 156-157

Electrical Data ................................................................................. 158

External Dimensions ................................................................. 159-160

Electrical Wiring Diagrams ....................................................... 161-164

Refrigerant Flow Diagrams .............................................................. 165

External Static Pressure and Air Flow ............................................. 166

External Static Pressure Ranges ..................................................... 167

Heater Capacity Airow / Static Pressure Drop Factors .................. 168

Acoustic Data ........................................................................... 169-172

Capacity Tables ........................................................................ 173-188

Optional Accessories ....................................................................... 189

Application Guidelines ............................................................... 190-202

Selecting the Best Location ...................................................... 191-192

General Mounting ..................................................................... 193-196

General Drain Piping Information ............................................. 197-198

Wiring Guidelines ..................................................................... 199-201

Wired Remote Controller Location .................................................. 201

Acronyms ........................................................................................... 202

Introduction

TABLE OF SYMBOLS

This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

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 must not be completed.

Due to our policy of continuous product innovation, some specications may change without notication.

INTRODUCTION | 3

UNIT NOMENCLATURE

ARN U 07 3 TN C

Family ARN = Multi V Indoor Unit (Refrigerant R410A)

Type U = DC Inverter Heat Pump

Indoor Unit Capacity 05 = 5,000 Btu/h 07 = 7,000 Btu/h 09 = 9,000 Btu/h 12 = 12,000 Btu/h 15 = 15,000 Btu/h

Electrical Ratings 3 = 208–230V/60Hz/1Ph

Model B8 = Ducted (high static)

BH = Ducted (high static) CE = Floor Standing (small frame) CF = Floor Standing (large frame) L1 = Ducted (low static) L2 = Ducted (low static) L3 = Ducted (low static)

M2 = Ducted (high static) M3 = Ducted (high static)

Feature A, C, L, R = Standard*

G = Low Static

MULTI V Ducted Indoor Unit Engineering Manual

*Plasma lter kit accessories are available separately. Always follow all local, state, and national building codes with the use of this or any product.

18 = 18,000 Btu/h 24 = 24,000 Btu/h 28 = 28,000 Btu/h 30 = 30,000 Btu/h 36 = 36,000 Btu/h

42 = 42,000 Btu/h 48 = 48,000 Btu/h 54 = 54,000 Btu/h 76 = 76,000 Btu/h 96 = 96,000 Btu/h

NJ = Vertical/Horizontal Air Handling Unit NK = Vertical/Horizontal Air Handling Unit

SF = Wall Mounted / Art Cool™ Gallery SJ = Wall Mounted / Art Cool Mirror SK = Wall Mounted / Art Cool Mirror

SV = Wall Mounted / Standard TT = 1-Way Ceiling Cassette TU = 1-Way Ceiling Cassette TS = 2-Way Ceiling Cassette

U = Uncased

TM = 4-Way Ceiling Cassette TN = 4-Way Ceiling Cassette TQ = 4-Way Ceiling Cassette TR = 4-Way Ceiling Cassette

4

Generation 2 = Second 4 = Fourth A = Second, Revision A

4 | INTRODUCTION

Due to our policy of continuous product innovation, some specications may change without notication.

LG AIR CONDITIONER

TECHNICAL SOLUTION (LATS)

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 specications may change without notication.

INTRODUCTION | 5

LG AIR CONDITIONER TECHNICAL SOLUTION (LATS)

LATS Generates a Complete Project Report

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 specications may change without notication.

REFRIGERANT CHARGE WORKSHEET

Multi V 5 System R410A Refrigerant Charge Calculator (lbs.)

Job Name: __________________________________________

System Tag or ID:

Project Manager: ____________________________________ Date: ______________

Line # Description Chassis I.D. Size Quantity CF (Ref.)

1 Linear feet of 1/4" liquid line tubing 2 Linear feet of 3/8" liquid line tubing 3 Linear feet of 1/2" liquid line tubing 4 Linear feet of 5/8" liquid line tubing 5 Linear feet of 3/4" liquid line tubing 6 Linear feet of 7/8" liquid line tubing 7 Linear feet of 1" liquid line tubing 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 BH 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 ADDITIONAL Refrigerant Charge Required (Sum of lines 1 – 34)

36 Outdoor Unit Factory Refrigerant Charge

37

38

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 (Sum of factory refrigerant charges for all ODUs in the system, lines 36A -36H)

Sum of Additional Refrigerant Charge Required (line 35) and Total ODU Factory Refrigerant Charge (line 37)

2

— — 0.015 — — 0.041 — — 0.079 — — 0.116 — — 0.179 — — 0.238 — — 0.323

36A ARUM072*TE5 72k 14.3 36B ARUM096*TE5 96k 23.2 36C ARUM121*TE5 121k 23.2 36D ARUM144*TE5 144k 26.5 36E ARUM168*TE5 168k 26.5 36F ARUM192*TE5 192k 30.9 36G ARUM216*TE5 216k 37.5 36H ARUM241*TE5 241k 37.5

TOTAL SYSTEM CHARGE

1

Total (lbs.)

Introduction

Due to our policy of continuous product innovation, some specications may change without notication.

INTRODUCTION | 7

REFRIGERANT CHARGE WORKSHEET

Water IV System R410A Refrigerant Charge Calculator (lbs.)

Job Name: __________________________________________

System Tag or ID:

Project Manager: ____________________________________ Date: ______________

Line # Description Chassis I.D. Size Quantity CF (Ref.)

1 Linear feet of 1/4" liquid line tubing 2 Linear feet of 3/8" liquid line tubing 3 Linear feet of 1/2" liquid line tubing 4 Linear feet of 5/8" liquid line tubing 5 Linear feet of 3/4" liquid line tubing 6 Linear feet of 7/8" liquid line tubing 7 Linear feet of 1" liquid line tubing 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 BH 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 ADDITIONAL 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)

2

— — 0.015 — — 0.041 — — 0.079 — — 0.116 — — 0.179 — — 0.238 — — 0.323

ARW*072BAS4, ARW*096BAS4, ARW*121BAS4, ARW*144BAS4 10.42 ARW*072DAS4, ARW*096DAS4, ARW*121DAS4 10.42 ARW*144DAS4, ARW*192DAS4 11.66

TOTAL SYSTEM CHARGE

1

Total (lbs.)

8 | INTRODUCTION

Due to our policy of continuous product innovation, some specications may change without notication.

REFRIGERANT CHARGE WORKSHEET

Multi V S System R410A Refrigerant Charge Calculator (lbs.)

Job Name: __________________________________________

System Tag or ID:

Project Manager: ____________________________________ Date: ______________

Line # Description Chassis I.D. Size Quantity CF (Ref.)

1 Linear feet of 1/4" liquid line tubing

2 Linear feet of 3/8" liquid line tubing

3 Linear feet of 1/2" liquid line tubing

4 Linear feet of 5/8" liquid line tubing

5 Linear feet of 3/4" liquid line tubing

6 Linear feet of 7/8" liquid line tubing

7 Linear feet of 1" liquid line tubing

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 BH 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 ADDITIONAL 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)

2

— — 0.015 — — 0.041 — — 0.079 — — 0.116 — — 0.179 — — 0.238 — — 0.323

36A ARUN024GSS4 0 36B ARUN038GSS4 0 36C ARUN048GSS4 0 36D ARUN053GSS4 0 36F ARUN060GSS4 0 36G ARUB060GSS4 0

TOTAL SYSTEM CHARGE

1

Total (lbs.)

Introduction

Due to our policy of continuous product innovation, some specications may change without notication.

INTRODUCTION | 9

CEILING-CONCEALED DUCTED HIGH STATIC

Mechanical Specifications on page 11

General Data on page 12

Electrical Data on page 17

External Dimensions on page 18

Electrical Wiring Diagrams on page 22

Refrigerant Flow Diagrams on page 30

External Static Pressure and Air Flow on page 32

External Static Pressure Ranges on page 38

Acoustic Data on page 43

Capacity Tables on page 74

Optional Accessories on page 124

DUCTED HIGH STATIC

Mechanical Specications

Casing

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 specications may change without notication.

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

7,500 9,600 12,300 15,400 19,100 24,200

150 150 150 150 150 150

49 / 52 / 58 52 / 58 / 67 58 / 67 / 78 58 / 78 / 90 78 / 90 / 103 103 / 117 / 132

8,500 10,900 13,600 17,100 21,500 27,300

150 150 150 150 150 150

49 / 52 / 58 52 / 58 / 67 58 / 67 / 78 58 / 78 / 90 78 / 90 / 103 103 / 117 / 132

76 76 76 76 76 76

59 59 59 59 59 59

R410A R410A R410A R410A R410A R410A

EEV EEV EEV EEV EEV EEV

34 / 33 / 32 35 / 34 / 33 37 / 35 / 34 39 / 37 / 34 40 / 38 / 37 42 / 41 / 40

58.4 58.4 58.4 58.4 58.4 58.4

68.3 68.3 68.3 68.3 68.3 68.3

2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18

Sirocco Sirocco Sirocco Sirocco Sirocco Sirocco

1 1 1 1 1 1

2 2 2 2 2 2

258 / 222 / 198 258 / 222 / 198 307 / 258 / 198 388 / 357 / 307 466 / 413 / 258 618 / 519 / 445

230 / 205 / 191 286 / 230 / 205 339 / 286 / 230 399 / 339 / 230 459 / 399 / 339 565 / 509 / 459

0.23 0.23 0.23 0.23 0.23 0.23

0.31 0.31 0.31 0.31 0.31 0.31

1/4 Flare 1/4 Flare 1/4 Flare 1/4 Flare 1/4 Flare 3/8 Flare

1/2 Flare 1/2 Flare 1/2 Flare 1/2 Flare 1/2 Flare 5/8 Flare

1 1 1 1 1 1

Brushless Digitally Controlled / Direct

Source Units produced after February 2019.

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.

12 | HIGH STATIC

Due to our policy of continuous product innovation, some specications may change without notication.

Table 2: Ducted High Static (M2 Frame) Indoor Unit General Data.

Model No. ARNU073M2A4 ARNU093M2A4 ARNU123M2A4 ARNU153M2A4 ARNU183M2A4

Cooling Mode Performance

Capacity (Btu/h) Max Power Input1 (W)

L/M/H Power Input at Factory Default (W)

7,500 9,600 12,300 15,400 19,100

430 430 430 430 430

21 / 29 / 38 21 / 29 / 38 25 / 34 / 43 25 / 34 / 43 34 / 43 / 67

Heating Mode Performance

Capacity (Btu/h)

Max Power Input1 (W)

L/M/H Power Input at Factory Default (W)

8,500 10,900 13,600 17,100 21,500

430 430 430 430 430

21 / 29 / 38 21 / 29 / 38 25 / 34 / 43 25 / 34 / 43 34 / 43 / 67

Entering Mixed Air

Cooling Max. (°F WB)

Heating Min. (°F DB)2

76 76 76 76 76

59 59 59 59 59

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)

R410A R410A R410A R410A R410A

EEV EEV EEV EEV EEV

38 / 37 / 36 38 / 37 / 36 38 / 37 / 36 38 / 37 / 36 39 / 38 / 37

82.9 82.9 82.9 82.9 82.9

95.5 95.5 95.5 95.5 95.5

2 x 18 2 x 18 2 x 18 2 x 18 2 x 18

Fan

Type

Motor

Housing

Sirocco Sirocco Sirocco Sirocco Sirocco

1 1 1 1 1

2 2 2 2 2

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)

Standard Mode External Static Pressure (in. wg)

High Mode (Factory Set)

477 / 399 / 327 477 / 399 / 327 520 / 435 / 363 520 / 435 / 363 640 / 520 / 435

468 / 381 / 294 468 / 381 / 294 512 / 425 / 337 512 / 425 / 337 673 / 512 / 425

0.20 0.20 0.20 0.20 0.20

0.24 0.24 0.24 0.24 0.24

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

Source Units produced after February 2019.

1/4 Flare 1/4 Flare 1/4 Flare 1/4 Flare 1/4 Flare

1/2 Flare 1/2 Flare 1/2 Flare 1/2 Flare 1/2 Flare

1 1 1 1 1

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 specications may change without notication.

HIGH STATIC | 13

DUCTED HIGH STATIC

General Data M2 Units

Table 3: Ducted High Static (M2 Frame) Indoor Unit General Data, continued.

Model No. ARNU243M2A4 ARNU283M2A4 ARNU363M2A4 ARNU423M2A4

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

Source Units produced after February 2019.

24,200 28,000 36,200 42,000

430 430 430 430

34 / 43 / 67 57 / 88 / 123 88 / 123 / 184 136 / 193 / 231

27,300 31,500 40,600 47,000

450 450 450 450

34 / 43 / 67 57 / 88 / 123 88 / 123 / 184 136 / 193 / 231

76 76 76 76

59 59 59 59

R410A R410A R410A R410A

EEV EEV EEV EEV

39 / 38 / 37 40 / 38 / 37 42 / 40 / 38 44 / 43 / 40

82.9 86.2 86.2 86.2

95.5 99.2 99.2 99.2

2 x 18 2 x 18 2 x 18 2 x 18

Sirocco Sirocco Sirocco Sirocco

1 1 1 1

2 2 2 2

640 / 520 / 435 892 / 770 / 645 1,021 / 844 / 695 1,262 / 1,087 / 917

673 / 512 / 425 845 / 676 / 528 1,031 / 845 / 676 1,260 / 1,076 / 888

0.20 0.20 0.20 0.20

0.24 0.24 0.24 0.24

3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare

5/8 Flare 5/8 Flare 5/8 Flare 5/8 Flare

1 1 1 1

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.

14 | HIGH STATIC

Due to our policy of continuous product innovation, some specications may change without notication.

Table 4: Ducted High Static (M3 Frames) Indoor Unit General Data.

Model No. ARNU283M3A4 ARNU363M3A4 ARNU423M3A4 ARNU483M3A4 ARNU543M3A4

Cooling Mode Performance

Capacity (Btu/h) Max Power Input1 (W)

L/M/H Power Input at Factory Default (W)

28,000 36,200 42,000 48,100 54,000

650 650 650 650 650

60 / 83 / 109 75 / 107 / 161 75 / 107 / 161 75 / 107 / 172 172 / 215 / 260

Heating Mode Performance

Capacity (Btu/h)

Power Input1 (W)

L/M/H Power Input at Factory Default (W)

31,500 40,600 47,000 54,200 61,400

650 650 650 650 650

60 / 83 / 109 75 / 107 / 161 75 / 107 / 161 75 / 107 / 172 172 / 215 / 260

Entering Mixed Air

Cooling Max. (°F WB)

Heating Min. (°F DB)

2

76 76 76 76 76

59 59 59 59 59

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)

R410A R410A R410A R410A R410A

EEV EEV EEV EEV EEV

40/39/37 41/39/37 41/39/37 42/39/37 44/43/42

96.1 96.1 96.1 96.1 96.1

110.0 110.0 110.0 110.0 110.0

2 x 18 2 x 18 2 x 18 2 x 18 2 x 18

Fan

Type

Motor

Housing

Sirocco Sirocco Sirocco Sirocco Sirocco

1 1 1 1 1

2 2 2 2 2

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) Standard Mode

External Static Pressure (in. wg) High Mode (Factory Set)

1,235 / 1,060 / 915 1,327 / 1,097 / 952 1,327 / 1,097 / 952 1,457 / 1,189 / 952 1,720 / 1,558 / 1,424

1,250 / 1,017 / 837 1,449 / 1,191 / 918 1,449 / 1,191 / 918 1,482 / 1,191 / 918 1,744 / 1,614 / 1,482

0.19 0.19 0.19 0.19 0.19

0.23 0.23 0.23 0.23 0.23

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

Source Units produced after February 2019.

3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare

5/8 Flare 5/8 Flare 5/8 Flare 5/8 Flare 5/8 Flare

1 1 1 1 1

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 specications may change without notication.

HIGH STATIC | 15

DUCTED HIGH STATIC

General Data

B8 Units

Table 5: Ducted High Static (B8 Frames) Indoor Unit General Data.

Model No. ARNU363B8A4 ARNU423B8A4 ARNU483B8A4 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

Source Units produced after February 2019.

36,200 42,000 48,100 76,400 95,900

800 800 800 800 800

403 / 420 / 478 465 / 497 / 528 482 / 500 / 538 505 / 505 / 765 750 / 750 / 800

40,600 43,800 51,200 86,000 107,500

800 800 800 800 800

403 / 420 / 478 465 / 497 / 528 482 / 500 / 538 505 / 505 / 765 750 / 750 / 800

76 76 76 76 76

59 59 59 59 59

R410A R410A R410A R410A R410A

EEV EEV EEV EEV EEV

46 / 45 / 42 47 / 46 / 43 47 / 46 / 44 50 / 48 / 48 52 / 50 / 50

192 192 192 192 192

222 222 222 222 222

2 x 18 2 x 18 2 x 18 2 x 18 2 x 18

Sirocco Sirocco Sirocco Sirocco Sirocco

2 2 2 2 2

1,896 / 1,748 / 1,550 1,963 / 1,786 / 1,589 2,048 / 1,846 / 1,670 2,050 / 1,766 / 1,766 2,684 / 2,260 / 2,260

1,730 / 1,317 / 1,066 1,914 / 1,458 / 1,123 2,019 / 1,518 / 1,200 2,260 / 1,766 / 1,766 2,542 / 2,260 / 2,260

0.35 0.35 0.35 0.59 0.59

0.70 0.70 0.70 0.87 0.87

3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare

3/4 Brazed 3/4 Brazed 3/4 Brazed 3/4 Brazed 7/8 Brazed

1 1 1 1 1

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.

16 | HIGH STATIC

Due to our policy of continuous product innovation, some specications may change without notication.

DUCTED HIGH STATIC

Electrical Data

Table 6: Ducted High Static Indoor Unit Electrical Data.

Rated

Model Voltage Range MCA MOP

Amps

(A)

BH Units

ARNU073BHA4

ARNU093BHA4 1.32 1.06 150 150 52 / 58 / 67

ARNU123BHA4 1.32 1.06 150 150 58 / 67 / 78

ARNU153BHA4 1.32 1.06 150 150 58 / 78 / 90

ARNU183BHA4 1.32 1.06 150 150 78 / 90 / 103

ARNU243BHA4 1.32 1.06 150 150 103 / 117 / 132

208-230

1.32

1.06

15

M2 Units

ARNU073M2A4

ARNU093M2A4 2.9 2.3 430 430 21 / 29 / 38

ARNU123M2A4 2.9 2.3 430 430 25 / 34 / 43

ARNU153M2A4 2.9 2.3 430 430 25 / 34 / 43

ARNU183M2A4 2.9 2.3 430 430 34 / 43 / 67

ARNU243M2A4 2.9 2.3 430 430 34 / 43 / 67

ARNU283M2A4 2.9 2.3 430 430 57 / 88 / 123

ARNU363M2A4 2.9 2.3 430 430 88 / 123 / 184

ARNU423M2A4 2.9 2.3 430 430 136 / 193 / 231

208-230

2.9

2.3

15

M3 Units

ARNU283M3A4

ARNU363M3A4 3.1 2.5 650 650 75 / 107 / 161

ARNU423M3A4 3.1 2.5 650 650 75 / 107 / 161

ARNU483M3A4 3.1 2.5 650 650 75 / 107 / 172

ARNU543M3A4 3.1 2.5 650 650 172 / 215 / 260

208-230

3.1

2.5

15

B8 Units

ARNU363B8A4

ARNU423B8A4 6.5 5.2 800 800 465 / 497 / 528

ARNU483B8A4 6.5 5.2 800 800 482 / 500 / 538

ARNU763B8A4 6.5 5.2 800 800 505 / 505 / 765

ARNU963B8A4

208-230

6.5

15

6.5 5.2 800 800 750 / 750 / 800

5.2

Power Supply Power Input (W)

Hz Volts Phase

60 208-230 1

Max.

Cooling

150 150 49 / 52 / 58

430 430 21 / 29 / 38

650 650 60 / 83 / 109

800 800 403 / 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 specications may change without notication.

HIGH STATIC | 17

DUCTED HIGH STATIC

External Dimensions

BH Units

Figure 3: ARNU073~243BHA4 Dimensions.

MULTI V Ducted Indoor Unit Engineering Manual

Due to our policy of continuous product innovation, some specications may change without notication.

18 | HIGH STATIC

Figure 4: ARNU073~423M2A4 Dimensions.

9-3/32

DUCTED HIGH STATIC

External Dimensions

M2 Units

47-1/2

10-11/16 16-9/16

49-3/16

27-1/16

47-15/32

9-5/16

10-11/16

1-25/32

26-5/32

27-9/16

Ducted High Static

27-1/4

7-7/8

54-7/32

49-9/32

24-3/8

50-17/32

3-9/16

7-7/32

6-19/32

5-15/32

2-1/32

7/8

27/32

8-21/32

10-13/32

9-1/4

14-9/32

Due to our policy of continuous product innovation, some specications may change without notication.

HIGH STATIC | 19

DUCTED HIGH STATIC

External Dimensions M3 Units

Figure 5: ARNU283~543M3A4 Dimensions.

12-21/32

12-3/4

14-27/32

47-9/16

49-3/16

27-1/8

47-19/32

12-27/32

14-3/16

2-1/32

11-7/16

26-3/16

27-19/32

49-1/4

27-3/16

24-3/8

50-9/16

54-11/32

7-3/8

2-7/32

1-3/32

13/16

6-27/32

5-1/2

MULTI V Ducted Indoor Unit Engineering Manual

6-5/32

7-15/16

6-3/4

12-23/32

28-9/16

Due to our policy of continuous product innovation, some specications may change without notication.

20 | HIGH STATIC

3-5/8

Figure 6: ARNU363~963B8A4 Dimensions.

DUCTED HIGH STATIC

External Dimensions

B8 Units

Ducted High Static

Due to our policy of continuous product innovation, some specications may change without notication.

HIGH STATIC | 21

DUCTED HIGH STATIC

Electrical Wiring Diagram

BH Units

Figure 7: ARNU073~243BHA4 Wiring Diagram.

MULTI V Ducted Indoor Unit Engineering Manual

Due to our policy of continuous product innovation, some specications may change without notication.

22 | HIGH STATIC

Table 7: BH Unit Wiring Diagram Legend.

Terminal Purpose Function

CN-POWER AC Power supply AC Power line

CN-MOTOR1 Fan motor output Motor output of BLDC

CN-DAMPER N / A N / A

CN-ZONE Zone controller Zone controller connection

CN-EXT External on / off controller External on / off Controller connection

CN-EEV EEV Output EEV control output

CN-OPTION Optional PCB EPROM Option PCB connection

CN-DISPLAY Display Display of indoor status

CN-PTC Auxiliary heater Connection for Auxiliary Heater

CN-CC Dry contact Dry Contact connection

CN-HUMID N / A N / A

CN-LEAK Leak detector Leak detector connection

CN-FLOAT Float switch input Float switch sensing

CN-PIPE/OUT Discharge pipe sensor Pipe out thermistor

CN-WF Wi-Fi Wi-Fi module connection

CN-AIRC N / A N / A

CN-PIPE/IN Suction pipe sensor Pipe in thermistor

CN-ROOM Room sensor Room air thermistor

CN-REMO Wired remote controller Wired remote control connection

CN-D/PUMP Drain pump output AC output for drain pump

CN-485 Communication Connection 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 Setting Off On Remarks

SW3 GROUP CONTROL Master Slave

SW4

SW5 CONTINUOUS FAN Off On

*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

Variable Auto

Due to our policy of continuous product innovation, some specications may change without notication.

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 specications may change without notication.

24 | HIGH STATIC

Table 9: M2 Unit Wiring Diagram Legend.

Terminal Purpose Function

CN-POWER AC Power supply AC Power line

CN-MOTOR1 Fan motor output Motor output of BLDC

CN-VM Sub PCB to Main PCB power supply Power supply connection

CN-DAMPER N / A N / A

CN-ZONE Zone controller Zone controller connection

CN-EXT External on / off controller External on / off Controller connection

CN-EEV EEV Output EEV control output

CN-OPTION Optional PCB EPROM Option PCB connection

CN-DISPLAY Display Display of indoor status

CN-PTC Auxiliary heater Connection for Auxiliary Heater

CN-CC Dry contact Dry Contact connection

CN-HUMID N / A N / A

CN-LEAK Leak detector Leak detector connection

CN-FLOAT Float switch input Float switch sensing

CN-PIPE/OUT Discharge pipe sensor Pipe out thermistor

CN-WF Wi-Fi Wi-Fi module connection

CN-AIRC N / A N / A

CN-PIPE/IN Suction pipe sensor Pipe in thermistor

CN-ROOM Room sensor Room air thermistor

CN-REMO Wired remote controller Wired remote control connection

CN-D/PUMP Drain pump output AC output for drain pump

CN-485 Communication Connection 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 Setting Off On Remarks

SW3 GROUP CONTROL Master Slave

SW4

SW5 CONTINUOUS FAN Off On

*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

Variable Auto

Due to our policy of continuous product innovation, some specications may change without notication.

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 specications may change without notication.

26 | HIGH STATIC

Table 11: M3 Unit Wiring Diagram Legend.

Terminal Purpose Function

CN-POWER AC Power supply AC Power line

CN-MOTOR1 Fan motor output Motor output of BLDC

CN-MOTOR2 Fan motor output Motor output of BLDC

CN-VM Sub PCB to Main PCB power supply Power supply connection

CN-DAMPER N / A N / A

CN-ZONE Zone controller Zone controller connection

CN-EXT External on / off controller External on / off Controller connection

CN-EEV EEV Output EEV control output

CN-OPTION Optional PCB EPROM Option PCB connection

CN-DISPLAY Display Display of indoor status

CN-PTC Auxiliary heater Connection for Auxiliary Heater

CN-CC Dry contact Dry Contact connection

CN-LEAK Leak detector Leak detector connection

CN-FLOAT Float switch input Float switch sensing

CN-PIPE/OUT Discharge pipe sensor Pipe out thermistor

CN-WF Wi-Fi Wi-Fi module connection

CN-HUMID N / A N / A

CN-AIRC N / A N / A

CN-PIPE/IN Suction pipe sensor Pipe in thermistor

CN-ROOM Room sensor Room air thermistor

CN-REMO Wired remote controller Wired remote control connection

CN-D/PUMP Drain pump output AC output for drain pump

CN-485 Communication Connection 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 Setting Off On Remarks

SW3 GROUP CONTROL Master Slave

SW4

SW5 CONTINUOUS FAN Off On

*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

Variable Auto

Due to our policy of continuous product innovation, some specications may change without notication.

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 specications may change without notication.

28 | HIGH STATIC

Table 13: B8 Unit Wiring Diagram Legend.

Terminal Purpose Function

CN-POWER AC Power supply AC Power line

CN-MOTOR1 Fan motor output Motor output of BLDC

CN-MOTOR2 Fan motor output Motor output of BLDC

CN-VM Sub PCB to Main PCB power supply Power supply connection

CN-DAMPER N / A N / A

CN-ZONE Zone controller Zone controller connection

CN-EXT External on / off controller External on / off Controller connection

CN-EEV EEV Output EEV control output

CN-OPTION Optional PCB EPROM Option PCB connection

CN-DISPLAY Display Display of indoor status

CN-PTC Auxiliary heater Connection for Auxiliary Heater

CN-CC Dry contact Dry Contact connection

CN-LEAK Leak detector Leak detector connection

CN-FLOAT Float switch input Float switch sensing

CN-PIPE/OUT Discharge pipe sensor Pipe out thermistor

CN-WF Wi-Fi Wi-Fi module connection

CN-HUMID N / A N / A

CN-AIRC N / A N / A

CN-PIPE/IN Suction pipe sensor Pipe in thermistor

CN-ROOM Room sensor Room air thermistor

CN-REMO Wired remote controller Wired remote control connection

CN-D/PUMP Drain pump output AC output for drain pump

CN-485 Communication Connection 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 Setting Off On Remarks

SW3 GROUP CONTROL Master Slave

SW4

SW5 CONTINUOUS FAN Off On

*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

Variable Auto

Due to our policy of continuous product innovation, some specications may change without notication.

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.

Model Liquid (inch) Vapor (inch)

BH Units

ARNU073BHA4 ARNU093BHA4 ARNU123BHA4 ARNU153BHA4 ARNU183BHA4 ARNU243BHA4 3/8 Flare 5/8 Flare

M2 Units

ARNU073M2A4 1/4 Flare 1/2 Flare ARNU093M2A4 1/4 Flare 1/2 Flare ARNU123M2A4

MULTI V Ducted Indoor Unit Engineering Manual

M3 Units

ARNU153M2A4 1/4 Flare 1/2 Flare ARNU183M2A4 1/4 Flare 1/2 Flare ARNU243M2A4 3/8 Flare 5/8 Flare ARNU283M2A4 3/8 Flare 5/8 Flare ARNU363M2A4 3/8 Flare 5/8 Flare ARNU423M2A4 3/8 Flare 5/8 Flare

ARNU283M3A4 ARNU363M3A4 ARNU423M3A4 ARNU483M3A4 ARNU543M3A4

1/4 Flare 1/2 Flare

3/8 Flare 5/8 Flare

TH2

lndoor unit

EEV

Heating

Filter

Table 16: BH, M2, M3 Frame Thermistors.

Thermistor Description

TH1 Return air thermistor TH2 Pipe in thermistor TH3 Pipe out thermistor

30 | HIGH STATIC

Due to our policy of continuous product innovation, some specications may change without notication.