Low Static Built In Ducted 7,500 to 24,200 Btu/h Vertical / Horizontal Air Handler 12,000 to 54,000 Btu/h

Transcription

1 EM-MultiV-Ducted-IndoorUnits 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 Low Static Built In Ducted 7,500 to 24,200 Btu/h Vertical / Horizontal Air Handler 12,000 to 54,000 Btu/h

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

3 Table of Contents Unit Nomenclature... 4 Indoor Unit Overview... 5 Controllers Overview... 8 LATS Overview High Static Ducted Indoor Units Mechanical Specifications General Data Electrical Data External Dimensions Electrical Wiring Diagrams Refrigerant Flow Diagrams External Static Pressure and Air Flow External Static Pressure Ranges Acoustic Data Capacity Tables Optional Accessories Low Static Ducted Indoor Units Mechanical Specifications General Data Electrical Data External Dimensions Electrical Wiring Diagrams Refrigerant Flow Diagrams External Static Pressure and Air Flow External Static Pressure Ranges Acoustic Data Capacity Tables Vertical / Horizontal Air Handler Units Mechanical Specifications General Data Electrical Data External Dimensions Electrical Wiring Diagrams Refrigerant Flow Diagrams External Static Pressure and Air Flow External Static Pressure Ranges Heater Capacity Airflow / Static Pressure Drop Factors Acoustic Data Capacity Tables Optional Accessories Application Guidelines Selecting the Best Location General Mounting General Drain Piping Information Wiring Guidelines Wired Remote Controller Location Acronyms Introduction Built In Indoor Units Mechanical Specifications General Data Electrical Data External Dimensions Electrical Wiring Diagrams Refrigerant Flow Diagrams External Static Pressure and Air Flow External Static Pressure Ranges Acoustic Data Capacity Tables Optional Accessories TABLE OF symbols DANGER CAUTION 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 should not be completed. Introduction 3

4 unit nomenclature ARN U 07 3 TN C 4 Family ARN = Multi V Indoor Unit (Refrigerant R410A) MULTI V Ducted Indoor Unit Engineering Manual Type U = DC Inverter Heat Pump Indoor Unit Nominal Capacity 05 = 5,000 Btu/h 18 = 18,000 Btu/h 07 = 7,000 Btu/h 24 = 24,000 Btu/h 09 = 9,000 Btu/h 28 = 28,000 Btu/h 12 = 12,000 Btu/h 30 = 30,000 Btu/h 15 = 15,000 Btu/h 36 = 36,000 Btu/h Electrical Ratings 3 = V/60Hz/1Ph Model B3 = Ducted (low static - bottom return) B4 = Ducted (low static - bottom return) B8 = Ducted (high static) BG = Ducted (high static) BR = 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) Feature A = Basic C = Plasma Filter G = Low Static 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 S8 = Wall Mounted/Mirror (large frame) SE = Wall Mounted/Mirror (small frame) SB = Standard Wall Mounted SC = Standard Wall Mounted TT = 1-Way Ceiling Cassette TU = 1-Way Ceiling Cassette TL = 2-Way Ceiling Cassette TM = 4-Way Ceiling Cassette L = Neo Plasma R = Mirror and Neo Plasma U = Uncased TN = 4-Way Ceiling Cassette TP = 4-Way Ceiling Cassette TQ = 4-Way Ceiling Cassette TR = 4-Way Ceiling Cassette VE = Convertible Surface Mounted VJ = Ceiling Suspended Generation 2 = Second 4 = Fourth A = Second, Revision A 4 Introduction

5 Indoor Unit Overview Wall-Mounted / Ceiling Cassette Table 1: Wall-Mounted / Ceiling Cassette Indoor Units. Unit/Type 1 ARNU***** 2 (W x D x H) Dimensions (inches) Wall Mounted ART COOL TM Mirror Wall Mounted Standard Ceiling Cassette One Way Ceiling Cassette Two Way Nominal Capacity Btu/h Cooling 3 Heating 3 Air Flow Rate (CFM) (H/M/L 4 ) Weight (lbs.) Pipe Connections (inches, O.D.) (Liquid, Vapor) 073 SER2 7,500 8, /212/ SER2 9,600 10, /247/ /16 x 6-1/2 x 11-1/ SER2 12,300 13, /283/212 1/4, 1/2 153 SER2 15,400 17, /283/ S8R2 19,100 21, /459/ /16 x 7-7/8 x 11-13/ S8R2 24,200 27, /508/424 3/8, 5/8 053 SBL4 5,500 6,100 1,120/1,080/1, SBL4 7,500 8,500 1,190/1,120/1, SBL4 35-1/4 x 8-15/16 x 11-7/16 9,600 10,900 1,260/1,190/1, SBL4 12,300 13,600 1,420/1,260/1,120 1/4, 1/2 153 SBL4 15,400 17,100 1,550/1,350/1, SCL4 19,100 21,500 1,120/1,050/ /16 x 9-7/8 x 12-13/ SCL4 24,200 27,300 1,280/1,140/1,000 3/8, 5/8 073 TUC4 7,500 8, /258/ TUC4 Body: 33-7/8 x 17-3/4 x 6-11/16 Panel: 43-5/16 x 19-3/4 x 1-3/8 9,600 10, /304/ TUC4 12,300 13, /325/290 Body: 33 Panel: 10 1/4, 1/2 183 TTC4 Body: 46-1/2 x 17-3/4 x 6-7/8 19,100 21, /427/385 Body: TTC4 Panel: 55-15/16 x 19-3/4 x 1-3/8 24,200 24, /470/406 Panel: 13 3/8, 5/8 183 TLC4 19,100 21, /424/353 1/4, 1/2 Body: 32-11/16 x 21-5/8 x 8-7/8 Panel: 41-5/16 x 25-3/16 x 1-5/8 Body: 49 Panel: TLC4 24,200 27, /530/459 3/8, 5/8 Introduction Ceiling Cassette Four Way (2' x 2') Ceiling Cassette Four Way (3' x 3') 053 TRC4 5,500 6, /247/212 Body: TRC4 093 TRC4 Body: 22-7/16 x 22-7/16 x 8-7/16 Panel: 27-9/16 x 27-9/16 x 7/8 7,500 9,600 8,500 10, /247/ /265/251 Panel: 7 Body: TRC4 12,300 13, /283/247 Panel: TQC4 Body: 22-7/16 x 22-7/16 x 10-3/32 15,400 17, /353/328 Body: TQC4 Panel: 27-9/16 x 27-9/16 x 7/8 19,100 21, /388/353 Panel: TPC4 Body: 33-1/16 x 33-1/16 x 8 24,200 27, /530/ TPC4 Panel: 37-3/8 x 37-3/8 x 1-7/16 28,000 31, /565/ TNC4 Body: 33-1/16 x 33-1/16 x 9-5/8 Panel: 37-3/8 x 37-3/8 x 1-7/16 36,200 40, /777/ TMC4 Body: 33-1/16 x 33-1/16 x 11-5/16 42,000 43,800 1,059/918/ TMC4 Panel: 37-3/8 x 37-3/8 x 1-7/16 48,100 51,200 1,130/953/883 Body: 48 Panel: 13 Body: 54 Panel: 13 Body: 59 Panel: 13 1/4, 1/2 3/8, 5/8 1 All indoor units require V/60Hz/1Ph and an AWG18-2 communication cable. 2 Model number shows nominal capacity and frame size designator. 3 Nominal cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB). Nominal heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60 F wet bulb (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 4 H/M/L = High/Medium/Low Introduction 5

6 Indoor Unit Overview Ducted MULTI V Ducted Indoor Unit Engineering Manual Table 2: Ducted Indoor Units. Unit/Type 1 ARNU***** 2 (W x D x H) Dimensions (inches) Ducted High Static Ducted Low Static Ducted Low Static - Built In Vertical/Horizontal Air Handling Unit 073 BGA4 Nominal Capacity Btu/h Cooling 3 Heating 3 Air Flow Rate (CFM) (H/M/L 4 ) 7,500 8, / 406 / BGA4 9,600 10, / 406 / BGA4 12,300 13, / 427 / BGA4 15,400 17, / 417 / BGA4 46-1/2 x 17-3/4 x 11-3/4 19,100 21, /487/ BGA4 24,200 27, /537/ BGA4 28,000 31,500 1,130/1,003/ BGA4 36,200 40,600 1,003/894/ BGA4 42,000 43, /770/ BRA4 48,100 51,200 1,568/1,395/1, /16 x 23-3/8 x BRA4 54,000 61,400 1,819/1,678/1,395 Weight (lbs.) 84 Pipe Connections (inches, O.D.) (Liquid, Vapor) 3/8, 5/8 Max. ESP (inches) B8A4 76,400 86,000 2,050/1,766/1,766 3/8, 3/4 61-1/2 x 27-1/8 x 18-1/ B8A4 95, ,500 2,542/2,260/2,260 3/8, 7/8 073 L1G4 7,500 8, /230/ /16 x 27-9/16 x 7-1/2 093 L1G4 9,600 10, /250/ L2G4 12,300 13, /310/250 1/4, 1/2 153 L2G4 35-7/16 x 27-9/16 x 7-1/2 15,400 17, /360/ L2G4 19,100 21, /450/ L3G4 43-5/16 x 27-9/16 x 7-1/2 24,000 27, /570/ /8. 5/8 073 B3G4 7,500 8, /229/ B3G4 9,600 10, /247/ /8 x 22-5/8 x 7-1/ B3G4 12,300 13, /283/229 1/4, 1/2 153 B3G4 15,400 17, /353/ B4G4 19,100 21, /424/ /16 x 22-5/8 x 7-1/ B4G4 24,200 27, /530/353 3/8, 5/8 123 NJA4 12,000 13, /480/380 1/4, 1/2 183 NJA4 18,000 20, /530/ NJA4 18 x 21-1/4 x 48-11/16 24,000 27, /640/ NJA4 30,000 34, /800/ NJA4 36,000 40, /880/ NKA4 42,000 46,000 1,250/1,100/1,000 3/8, 5/8 483 NKA4 25 x 21-1/4 x 55-3/16 48,000 54,000 1,400/1,260/1, NKA4 54,000 60,000 1,475/1,400/1,260 1 All indoor units require V/60Hz/1Ph and an AWG18-2 communication cable. 2 Model number shows nominal capacity and frame size designator. 3 Nominal cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB) Nominal heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60 F wet bulb (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 4 H/M/L = High/Medium/Low Introduction

7 Indoor Unit Overview Surface Mounted / Floor Standing Table 3: Surface Mounted / Floor Standing Indoor Units. Unit/Type 1 ARNU**** 2 (W x D x H) Dimensions (inches) Nominal Capacity Btu/h Cooling 3 Heating 3 Air Flow Rate (CFM) (H/M/L 4 ) Weight (lbs.) Pipe Connections (inches, O.D.) (Liquid, Vapor) Ceiling Suspended 183VJA2 19,100 21, /495/424 1/4, 1/2 37-7/16 x 8-11/16 x 25-5/ VJA2 24,200 27, /565/495 3/8, 5/8 Convertible Surface Mounted 093VEA2 9,600 10, /243/ /16 x 7-7/8 x 19-5/16 123VEA2 12,300 13, /268/ /4, 1/2 Floor Standing Cased 073 CEA4 7,500 8, /265/ CEA4 9,600 10, /300/ x 8 x CEA4 12,300 13, /335/ CEA4 15,400 17, /353/ /4, 1/2 Introduction 183 CFA4 19,100 21, /494/ /16 x 8 x CFA4 24,200 27, /565/494 3/8, 5/8 Floor Standing Uncased 073 CEU4 7,500 8, /265/ CEU4 9,600 10, /300/ /2 x 7-15/16 x 25-3/ CEU4 12,300 13, /335/ /4, 1/2 153 CEU4 15,400 17, /353/ CFU4 19,100 21, /494/ /16 x 7-1/2 x 25-3/ CFU4 24,200 27, /565/494 3/8, 5/8 1 All indoor units require V/60Hz/1Ph and an AWG18-2 communication cable. 2 Model number shows nominal capacity and frame size designator. 3 Nominal cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB). Nominal heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60 F wet bulb (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 4 H/M/L = High/Medium/Low Introduction 7

8 Controllers Overview Zone Controllers and Communication Cables Table 4: Zone Controllers. Zone Controller Name Model No. Case Color Max Wire Length (ft) Description Simple Controller with mode selection PQRCVCL0Q PQRCVCL0QW Black White 164 Allows control of indoor unit on/off, operation mode, fan speed, and temperature setpoint for up to 16 indoor units. MULTI V Ducted Indoor Unit Engineering Manual Simple Controller without mode selection LG Premium Controller LG Programmable Thermostat PQRCHCA0Q PQRCHCA0QW Black White 164 PREMTA000 Ivory 164 PREMTB10U White 164 Wireless Handheld PQWRHQ0FDB Ivory ---- Wall-Mounted Remote Temperature Sensor PQRSTA0 Ivory 50 Allows control of indoor unit on/off, fan speed, and temperature setpoint for up to 16 indoor units. Allows control of indoor unit on/off, operation mode, occupied/ unoccupied temperature setpoints, fan speed, and air flow direction for up to 16 indoor units. Programmable schedule with 5 events per day with control of occupied/unoccupied, on/off, mode, setpoints and fan speed. Advanced functions include two setpoint autochangeover, minimum difference between setpoints, setback, timed override, target energy consumption display, check energy display and master/slave. Allows control of indoor unit on/off, operation mode, occupied and unoccupied temperature setpoints, fan speed, and airflow direction for up to 16 indoor units. Programmable schedule with 5 events per day with control of occupied unoccupied, on/off, mode, setpoints and fan speed. Advanced functions include two setpoint autochangeover, minimum difference between setpoints, setback and timed override. Allows control of indoor unit on/off, operation mode, fan speed, and temperature setpoint. Allows remote temperature measurement for cassette and ducted units. Before specifying or placing an order, refer to the V-Net Network Solution Engineering Product Data Book and review the detailed technical data provided to fully understand the capabilities and limitations of these devices. For information on controller compatibility refer to the Controls and Options Tables on pages 12 and 13. Table 5: Zone Controller Communication Cables. Communication Cable Name Model No. Wire Length (ft.) Description Wired Remote Group Control Cable Assembly PZCWRCG3 33 Required when grouping multiple indoor units with a single zone controller. Wired Remote/Group Control Extension Cable PZCWRC1 33 Increases the distance between a remote controller and an indoor unit or between indoor units in a control group. Before specifying or placing an order, refer to the V-Net Network Solution Engineering Product Data Book and review the detailed technical data provided to fully understand the capabilities and limitations of these devices. For information on controller compatibility refer to the Controls and Options Tables on pages 12 and Introduction

9 Controllers Overview Specialty Application Devices Table 6: Specialty Application Devices. Specialty Application Device Name Simple Dry Contact Dry Contact for Economizer, occupied/ unoccupied Dry Contact Unit for 24V Thermostat Model No. PQDSB1 PQDSBC1 PDRYCB300 Connect to Indoor Unit Application On/Off, Run Status, Error Status On/Off, Mode, Controller Lock, Power Save, Run Status, Error Status On/Off, Thermo On/ Off, Mode, Fan Speed, Run Status, Error Status Binary Signals Input/ Output 1/2 2/2 --- Description Enables the indoor unit to be controlled and monitored by third party controls using binary inputs and outputs. Enables the indoor unit to be controlled and monitored by a third party thermostat or controller. Digital Output (DO) Kit PQNFP00T0 Comm Bus On/Off 0/1 One 25A DPST normally open relay. Used with central controller to control third party device manually or by schedule. I/O Module PEXPMB000. ENCXLUS AC Smart IV and ACP IV Third party equipment control. Allows system expansion through Digital and Analog inputs and outputs Digital Inputs: Dry Contact input only 3 Digital Outputs: Max. 2A@30VAC/DC 4 Analog Outputs: 0 to 10 VDC, configurable; 0 to 20 ma, configurable 4 Universal Inputs individually configurable as analog or digital: Analog: Voltage. Current. Thermistor (NTC, PT, Ni) Digital for Dry Contact input only Introduction Auxiliary Heater Relay Kit PRARH0 PRARS0 Indoor Unit Third party supplemental heat control 0/1 Adds coordinated control of an external heater with normal heat pump operations. Auxiliary Two-Stage Heater Relay Kit PRARH1 Indoor Unit Third party supplemental heat control 0/2 Adds coordinated control of an external heater with normal heat pump operations. Power Distribution Indicator (PDI) Premium PQNUD1S41 Comm Bus Energy consumption monitoring 8 Watt Node Meters Monitors total outdoor unit power consumption for up to eight systems, and distributes per indoor unit based on weighted calculation. Mode Selector Switch PRDSBM Outdoor Unit Multi V Heat Pump Only --- Locks outdoor unit into Heat, Cool, or Fan Mode. Before specifying or placing an order, refer to the V-Net Network Solution Engineering Product Data Book and review the detailed technical data provided to fully understand the capabilities and limitations of these devices. For information on controller compatibility refer to the Controls and Options Tables on pages 12 and 13. Introduction 9

10 Controllers Overview Central Controllers MULTI V Ducted Indoor Unit Engineering Manual Table 7: Central Controllers (connect to the outdoor unit terminals Internet A, Internet B). Central Controller Name AC Smart IV Model No. PACS4B000. ENCXLUS Devices per Controller Systems per Comm Bus Devices per Comm Bus No. of Comm Bus Ports Binary Signals Input/ Output 2 DI / 2 DO AC Ez PQCSZ250S Advanced Control Platform IV (ACP IV) PACP4B000. ENCXLUS Power, Conn 24 VAC 12 VDC, ODU /4 24 VAC Description Monitors / operates indoor units through a touch screen. Manages up to 128 devices. Advanced functions include programmable schedules, temperature setpoint range lock, remote controller lock, run time limit, manual control and scheduling of digital output kit, peak/demand control, visual floor plan navigation, web access, operation and error history log, one digital input and two digital outputs for device interlocking and error notification. Provides for scheduling in addition to basic indoor unit control and monitoring. Provides for scheduling, remote controller lock, setpoint range limit, web access, peak/demand control, PDI integration, and AC Manager Plus integration advanced functionality in addition to basic unit control and monitoring. Before specifying or placing an order, refer to the V-Net Network Solution Engineering Product Data Book and review the detailed technical data provided to fully understand the capabilities and limitations of these devices. For information on controller compatibility refer to the Controls and Options Tables on pages 12 and Introduction

11 Introduction Controllers Overview Integration Solutions Table 8: Summary Data Integration Solutions (connect to outdoor unit terminals Internet A, Internet B). Integration Solution Name ACP IV BACnet Gateway LonWorks Gateway Model No. Devices per Controller Systems per Comm Bus Devices per Comm Bus No. of Comm Bus Ports Power Binary Signals Input/ Output Description PQNFB17C1 PLNWKB VAC 24 VAC 10/4 2/2 Allow integration of LG equipment for control and monitoring by open protocol BACnet and LonWorks building automation and controls systems.* Before specifying or placing an order, refer to the V-Net Network Solution Engineering Product Data Book and review the detailed technical data provided to fully understand the capabilities and limitations of these devices. For information on controller compatibility refer to the Controls and Options Tables on pages 12 and 13. * BACnet TM is a trademark of ASHRAE; LonWorks TM is a trademark of Echlelon Corporation. Introduction 11

12 Controllers Overview Options and Features Table 9: Options and Features. Feature Wall Mounted Standard Finish Wall Mounted ART COOL Mirror 1-Way Cassette 2-Way Cassette 4-Way Cassette Ducted High Static Ducted Low Static MULTI V Ducted Indoor Unit Engineering Manual Airflow Operation Filter Controllers Others Nominal Chassis Size (MBh) Air supply outlets Airflow direction (left/right) manual auto Auto airflow direction (up/down) Fan speed (Heating mode) Fan speed (Cooling mode) Fan speed (fan mode) Chaos swing (random louver swing) Chaos wind (random fan speed) Jet-cool (power cooling) E.S.P. control High ceiling Auto-restart after power restore Hot start Diagnostics Auto changeover 1 Auto operation 6 Auto clean (coil dry) Child lock Dual thermistor control Dual set-point control Filter life display Power consumption display (with PDI) Forced operation Group control Requires the use of one Group control cable kit (PZCWRCG3) for every additional indoor unit Timer (on/off) Weekly schedule Test operation mode Plasma 3 Washable anti-fungal 2 7-day programmable controller o o o o o o o o Simple controller w/mode o o o o o o o o Simple controller w/o mode o o o o o o o o Wireless controller o o o o o o o 4 o 4 Condensate lift Ventilation air 5 5 Casing Standard grille Auto elevation grille o Suction grille Suction canvas Aux. heat kit 1 For Heat Recovery systems only. 2 Primary washable filters. 3 Secondary plasma filters. 4 Requires 7-day programmable zone controller. 5 Requires ventilation kit PTVK430 or PTVK410+PTVK420 (For TP, TN, TM frames)(temperature, humidity, and volume limitations apply). 6 Heat Pump systems only. = Standard feature o = Unit option 12 Introduction

13 Controllers Overview Options and Features Table 10: Options and Features, continued. Feature Ducted Low Static Bottom Return Vert.-Horiz. AHU (NJ) Vert.-Horiz. AHU (NK) Ceiling Suspended Convertible Surface Mount Floor Mount Cased Floor Mount Uncased Airflow Operation Filter Controllers Others Nominal Chassis Size (MBh) Air supply outlets Airflow direction (left/right) manual manual Auto airflow direction (up/down) Fan speed (Heating mode) Fan speed (Cooling mode) Fan speed (fan mode) Chaos swing (random louver swing) Chaos wind (random fan speed) Jet-cool (power cooling) E.S.P. control Auto-restart after power restore Hot start Diagnostics Auto changeover 1 Auto operation 6 Auto clean (coil dry) Child lock Dual thermistor control Dual set-point control Filter life display Power consumption display (with PDI) Forced operation Group control Requires the use of one Group control cable kit (PZCWRCG3) for every additional indoor unit Timer (on/off) Weekly schedule Test operation mode Plasma 3 Washable anti-fungal 2 7-day programmable controller o o o o o Simple controller w/mode o o o o o o o Simple controller w/o mode o o o o o o o Wireless controller o 4 o o o o o 4 o 4 Condensate lift Ventilation air Casing Standard grille Auto elevation grille Suction grille o Suction canvas o Aux. heat kit 1 For Heat Recovery systems only. 2 Primary washable filters. 3 Secondary plasma filters. 4 Requires 7-day programmable zone controller. 5 Requires ventilation kit PTVK430 or PTVK410+PTVK420 (For TP, TN, TM frames)(temperature, humidity, and volume limitations apply). 6 Heat Pump systems only. = Standard feature o = Unit option Introduction Introduction 13

14 LATS Multi V Piping Design Software The proper design and installation of the refrigerant piping system is a critical element of a Multi V system. Multi V Heat Pump systems require two pipes between components a liquid line and a vapor line. Multi V Heat Recovery systems require three pipes between the outdoor unit and the heat recovery unit a liquid line, a low-pressure vapor line, and a high-pressure vapor line. A properly designed refrigerant piping system ensures that refrigerant is delivered to the indoor unit coils for optimal system performance and capacity. MULTI V Ducted Indoor Unit Engineering Manual LG Air Conditioner Technical Solution (LATS) software is a total design solution for LG Multi V air conditioning systems. This Windows -based application assists the design engineer with specifying and sizing outdoor and indoor units (by calculating component capacity based on design conditions), laying out the refrigeration distribution pipe system, checking piping limitations, calculating refrigerant charge, and generating equipment schedules and piping diagrams in (.dxf) format for use on CAD building design drawings.* * Windows is a registered mark of Microsoft Corporation. To ensure that the refrigerant piping design meets LG s quality standards, a LATS refrigerant piping design must be provided with every Multi V order. Following the installation, if any changes or variations to the design are necessary, a new LATS file must be created and provided to LG prior to system commissioning to ensure the proper pipe size has not changed. Design Choices LATS Multi V software is flexible, offering the HVAC system engineer an easy to use Tree mode. Tree Mode Using the Tree mode, the engineer can quickly create a one-line schematic drawing of a Multi V system. Integration of the engineered pipe system into the building drawings is done at a later date by the draftsperson using standard drafting software tools. Import building loads from an external file (.xls format). System components selected using an easy drag and drop process. Automatically analyzes and checks the design complies with most piping design limitations. Sizes refrigerant piping. Generates a system engineering report (.xls format). Generates an equipment schedule (.xls or.dxf format). Generates a system piping diagram (.dxf format). Figure 1: Screenshot of LATS Pipe System Design Tool in Tree Mode. LATS Report LATS Multi V software generates a report file (.xls format) containing project design parameters, cooling and heating design day system component performance, and capacity data. The report calculates the system combination ratio, calculates the system refrigerant charge, and provides detailed bill of material information including a list of Multi V outdoor units, air handlers, control devices, accessories, refrigerant pipe sizes segregated by building, by system, by pipe size, and by pipe segments. 14 Introduction

15 CEILING-CONCEALED DUCTED HIGH STATIC Mechanical Specifications on page 16 General Data on page 17 Electrical Data on page 20 External Dimensions on page 21 Electrical Wiring Diagram on page 24 Refrigerant Flow Diagrams on page 30 External Static Pressure and Air Flow on page 32 External Static Pressure Ranges on page 34 Acoustic Data on page 36 Capacity Tables on page 42 Optional Accessories on page 51

16 DUCTED High Static Mechanical Specifications MULTI V Ducted Indoor Unit Engineering Manual 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 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. 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 wallmounted 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 HIPS (high impact polystyrene resin). 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 Child lock Dual thermistor control Dual setpoint control Filter life and power consumption 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) 16 HIGH STATIC

17 DUCTED HIGH STATIC General Data BG Units Table 11: Ducted High Static (BG Frame) Indoor Unit General Data. Model No. ARNU073BGA4 ARNU093BGA4 ARNU123BGA4 ARNU153BGA4 ARNU183BGA4 Cooling Mode Performance Capacity (Btu/h) 7,500 9,600 12,300 15,400 19,100 Power Input 1 (W) Heating Mode Performance Capacity (Btu/h) 8,500 10,900 13,600 17,100 21,500 Power Input 1 (W) Entering Mixed Air Cooling Max. ( F WB) Heating Min. ( F DB) Unit Data Refrigerant Type 2 R410A R410A R410A R410A R410A Refrigerant Control EEV EEV EEV EEV EEV Sound Pressure 3 db(a) (H/M/L) 35 / 35 / / 35 / / 35 / / 36 / / 39 / 37 Net Unit Weight (lbs.) Shipping Weight (lbs.) Communication Cable 4 (No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 Fan Type Sirocco Sirocco Sirocco Sirocco Sirocco Motor Housing Motor/Drive Brushless Digitally Controlled / Direct Airflow Rate H/M/L (CFM) Standard Mode 516 / 484 / / 484 / / 533 / / 427 / / 470 / 427 Airflow Rate H/M/L (CFM) High Mode (Factory Set) 441 / 406 / / 406 / / 427 / / 417 / / 487 / 417 External Static Pressure (in. wg) Standard Mode External Static Pressure (in. wg) High Mode (Factory Set) Piping Liquid Line (in., O.D.) 3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare Vapor Line (in., O.D.) 5/8 Flare 5/8 Flare 5/8 Flare 5/8 Flare 5/8 Flare 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. This data is rated 0 ft above sea level, with 25 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. All capacities are net with a combination ratio between %. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB). Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 1 Power Input is rated at high speed. 2 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. 3 Sound Pressure levels are tested in an anechoic chamber under ISO Standard All communication cable to be minimum 18 AWG, 2-conductor, stranded, shielded and must comply with applicable and national code. 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 High Static 17

18 DUCTED HIGH STATIC General Data BG Units MULTI V Ducted Indoor Unit Engineering Manual Table 12: Ducted High Static (BG Frame) Indoor Unit General Data, continued. Model No. ARNU243BGA4 ARNU283BGA4 ARNU363BGA4 ARNU423BGA4 Cooling Mode Performance Capacity (Btu/h) 24,200 28,000 36,200 42,000 Power Input 1 (W) Heating Mode Performance Capacity (Btu/h) 27,300 31,500 40,600 43,800 Power Input 1 (W) Entering Mixed Air Cooling Max. ( F WB) Heating Min. ( F DB) Unit Data Refrigerant Type 2 R410A R410A R410A R410A Refrigerant Control EEV EEV EEV EEV Sound Pressure 3 db(a) (H/M/L) 42 / 39 / / 41 / / 43 / / 44 / 44 Net Unit Weight (lbs.) Shipping Weight (lbs.) Communication Cable 4 (No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 Fan Type Sirocco Sirocco Sirocco Sirocco Motor Housing Motor/Drive Brushless Digitally Controlled / Direct Airflow Rate H/M/L (CFM) Standard Mode 671 / 576 / / 770 / 622 1,003 / 894 / 770 1,130 / 1,003 / 961 Airflow Rate H/M/L (CFM) High Mode (Factory Set) 671 / 537 / / 851 / 770 1,141 / 1,024 / 894 1,218 / 1,141 / 1,084 External Static Pressure (in. wg) Standard Mode External Static Pressure (in. wg) High Mode (Factory Set) Piping Liquid Line (in., O.D.) 3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare Vapor Line (in., O.D.) 5/8 Flare 5/8 Flare 5/8 Flare 5/8 Flare 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. This data is rated 0 ft above sea level, with 25 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. All capacities are net with a combination ratio between %. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB). Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 1 Power Input is rated at high speed. 2 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. 3 Sound Pressure levels are tested in an anechoic chamber under ISO Standard All communication cable to be minimum 18 AWG, 2-conductor, stranded, shielded and must comply with applicable and national code. 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. 18 HIGH STATIC

19 DUCTED HIGH STATIC General Data BR and B8 Units Table 13: Ducted High Static (BR and B8 Frames) Indoor Unit General Data. Model No. ARNU483BRA4 ARNU543BRA4 ARNU763B8A4 ARNU963B8A4 Cooling Mode Performance Capacity (Btu/h) 48,100 54,000 76,400 95,900 Power Input 1 (W) Heating Mode Performance Capacity (Btu/h) 51,200 61,400 86, ,500 Power Input 1 (W) Entering Mixed Air Cooling Max. ( F WB) Heating Min. ( F DB) Unit Data Refrigerant Type 2 R410A R410A R410A R410A Refrigerant Control EEV EEV EEV EEV Sound Pressure 3 db(a) (H/M/L) 45 / 43 / / 45 / / 48 / / 50 / 50 Net Unit Weight (lbs.) Shipping Weight (lbs.) Communication Cable 4 (No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 Fan Type Sirocco Sirocco Sirocco Sirocco Motor Housing Motor/Drive Brushless Digitally Controlled / Direct Airflow Rate H/M/L (CFM) Standard Mode 1,568 / 1,395 / 1,183 1,819 / 1,678 / 1,395 2,050 / 1,766 / 1,766 2,684 / 2,260 / 2,260 Airflow Rate H/M/L (CFM) High Mode (Factory Set) 1,582 / 1,434 / 1,176 1,801 / 1,582 / 1,434 2,260 / 1,766 / 1,766 2,542 / 2,260 / 2,260 External Static Pressure (in. wg) Standard Mode External Static Pressure (in. wg) High Mode (Factory Set) Piping Liquid Line (in., O.D.) 3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare Vapor Line (in., O.D.) 5/8 Flare 5/8 Flare 3/4 Flare 7/8 Flare 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. This data is rated 0 ft above sea level, with 25 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. All capacities are net with a combination ratio between %. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB). Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 1 Power Input is rated at high speed. 2 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. 3 Sound Pressure levels are tested in an anechoic chamber under ISO Standard All communication cable to be minimum 18 AWG, 2-conductor, stranded, shielded and must comply with applicable and national code. 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 High Static 19

20 Ducted High Static Electrical Data MULTI V Ducted Indoor Unit Engineering Manual Table 14: Ducted High Static (BG, BR, and B8 Frames) Indoor Unit Electrical Data. BG Units Model Voltage Range MCA MOP Rated Amps (A) ARNU073BGA Power Supply Power Input (W) Hz Volts Phase Cooling Heating ARNU093BGA ARNU123BGA ARNU153BGA ARNU183BGA ARNU243BGA ARNU283BGA ARNU363BGA ARNU423BGA BR Units ARNU483BRA ARNU543BRA B8 Units ARNU763B8A ARNU963B8A 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. 20 HIGH STATIC

21 Ducted High Static External Dimensions BG Units Figure 2: ARNU073~423BGA4 Dimensions. 13/ /2 8-5/8 Power Supply Connection 15/16 Air Return 48-1/2 Liquid Pipe Connection: 3/8 2-1/ /4 2-1/16 ø4 5-7/8 2-3/8 8-7/8 1-15/ /4 3-7/ / /16 Air Supply 1-3/ /4 3-7/ /4 Gas Pipe Connection: 5/8 Ducted High Static 11-3/4 7-5/16 6-1/4 4-7/ /8 17-3/4 1-15/ / /16 1-7/8 6-9/16 5-9/16 Drain Pipe Connection: 1 9-1/8 9-9/16 9-1/8 9-9/16 9-1/8 17-3/4 Center of Gravity Unit: inches Note: All measurements have a tolerance of ±1/4 in. 46-9/16 High Static 21

22 Ducted High Static External Dimensions BR Units Figure 3: ARNU483BRA4, ARNU543BRA4 Dimensions /4 Power Supply Connection 12 Liquid Pipe Connection: 3/8 MULTI V Ducted Indoor Unit Engineering Manual R60 7-3/4 2-3/8 12-1/ /4 5-9/ / /2 48-7/16 Air Return 4-5/8 Air Outlet 24-1/2 39-5/8 9-1/ / /2 39-9/16 4-7/ / / /16 6-7/8 11-7/8 11-9/16 Gas Pipe Connection: 5/8 3-9/16 4-9/16 5-5/16 7-7/ /4 3-15/16 3-1/ / / / /16 8-3/4 Drain Pipe Connection: /16 Center of Gravity Unit: inches Note: All measurements have a tolerance of ±1/4 in. 48-7/16 22 HIGH STATIC

23 Ducted High Static External Dimensions B8 Units Figure 4: ARNU763B8A4, ARNU963B8A4 Dimensions. 13/ /8 4-9/16 Power Supply Connection Gas Pipe Connection 76,000: 3/4 96,000: 7/8 17-3/8 2-3/4 4-3/4 18-1/8 63-7/8 61-5/8 Air Return 2-1/4 3/4 2-1/2 2-3/4 Liquid Pipe Connection: 3/8 5-9/16 3-7/8 Drain Pipe Connection: /8 12-9/ /4 44-3/16 Air Supply 15-11/ /8 27-1/8 11-1/2 2-9/16 1-3/16 6-3/8 8-3/4 2-5/ /4 4-7/8 2-3/8 Ducted High Static 11-9/ / / / / /8 61-1/2 Center of Gravity Unit: inches Note: All measurements have a tolerance of ±1/4 in. High Static 23

24 MULTI V Ducted Indoor Unit Engineering Manual Ducted High Static Electrical Wiring Diagram BG Units Figure 5: ARNU073~423BGA4 Wiring Diagram. 24 HIGH STATIC

25 Ducted High Static Electrical Wiring Diagram BG Units Table 15: BG Unit Wiring Diagram Legend. Table 16: BG Unit DIP Switch Settings. DIP Switch Setting Off On Remarks SW3 GROUP Master Slave Group Control setting using 7-Day Programmable Controller SW4 DRY CONTACT Variable Auto SW5 EXTRA 1 Off On SW8 Terminal Purpose Function CN-POWER AC Power supply AC Power line CN-MOTOR1 Fan motor output Motor output of BLDC RV-VM Sub PCB power supply Power supply connection CN-FLOAT (BL) Float switch input Float switch sensing CN-ZONE Zone controller Zone 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-CC Dry contact Dry Contact connection CN-PTC Auxiliary heater Connection for Auxiliary Heater CN-PIPE/OUT (RD) Discharge pipe sensor Pipe out thermistor CN-PIPE/IN (WH) Suction pipe sensor Pipe in thermistor CN-REMO (GN) Wired remote controller Wired remote control connection CN-ROOM (YL) Room sensor Room air thermistor CN-D/PUMP Drain pump output AC output for drain pump CN-485 Communication Connection between indoor and outdoor units COMMUNICATIONS RATE Gen. 2 Gen. 4 Dry Contact Mode Setting 1. Variable: Auto/Manual Mode can be chosen by 7-Day Programmable Controller or Wireless Remote Controller (when shipped from factory -> Manual Mode) 2. Auto: For Dry Contact, it is always Auto mode -OFF: Default (does not operate continuously) -ON: Fan operates continuously -OFF: 1.2kbps -ON: 9.6kbps For Multi V systems, DIP switches 1, 2, 6, and 7 must be set to OFF. These DIP switches are used for other models. Ducted High Static High Static 25

26 MULTI V Ducted Indoor Unit Engineering Manual Ducted High Static Electrical Wiring Diagram BR Units Figure 6: ARNU483BRA4, ARNU543BRA4 Wiring Diagram. 26 HIGH STATIC

27 Ducted High Static Electrical Wiring Diagram BR Units Table 17: BR Unit Wiring Diagram Legend. DIP Switch Setting Off On Remarks SW3 GROUP Master Slave Group Control setting using 7-Day Programmable Controller SW4 DRY CONTACT Variable Auto SW5 EXTRA 1 Off On SW8 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 RV-VM Sub PCB power supply Power supply connection CN-FLOAT (BL) Float switch input Float switch sensing CN-ZONE Zone controller Zone 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-CC Dry contact Dry Contact connection CN-PTC Auxiliary heater Connection for Auxiliary Heater CN-PIPE/OUT (RD) Discharge pipe sensor Pipe out thermistor CN-PIPE/IN (WH) Suction pipe sensor Pipe in thermistor CN-REMO (GN) Wired remote controller Wired remote control connection CN-ROOM (YL) Room sensor Room air thermistor CN-D/PUMP Drain pump output AC output for drain pump Table 18: BR Unit DIP Switch Settings. CN-485 Communication Connection between indoor and outdoor units COMMUNICATIONS RATE Gen. 2 Gen. 4 Dry Contact Mode Setting 1. Variable: Auto/Manual Mode can be chosen by 7-Day Programmable Controller or Wireless Remote Controller (when shipped from factory -> Manual Mode) 2. Auto: For Dry Contact, it is always Auto mode -OFF: Default (does not operate continuously) -ON: Fan operates continuously -OFF: 1.2kbps -ON: 9.6kbps For Multi V systems, DIP switches 1, 2, 6, and 7 must be set to OFF. These DIP switches are used for other models. Ducted High Static High Static 27

28 MULTI V Ducted Indoor Unit Engineering Manual Ducted High Static Electrical Wiring Diagram B8 Units Figure 7: ARNU763B8A4, ARNU963B8A4 Wiring Diagram. 28 HIGH STATIC

29 Ducted High Static Electrical Wiring Diagram B8 Units Table 19: 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 power supply Power supply connection CN-FLOAT (BL) Float switch input Float switch sensing CN-ZONE Zone controller Zone 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-CC Dry contact Dry Contact connection CN-PTC Auxiliary heater Connection for Auxiliary Heater CN-REMO (GN) Wired remote controller Wired remote control connection CN-PIPE/OUT (RD) Discharge pipe sensor Pipe out thermistor CN-PIPE/IN (WH) Suction pipe sensor Pipe in thermistor CN-ROOM (YL) Room sensor Room air thermistor CN-D/PUMP Drain pump output AC output for drain pump Table 20: B8 Unit DIP Switch Settings. CN-485 Communication Connection between indoor and outdoor units DIP Switch Setting Off On Remarks SW3 GROUP Master Slave Group Control setting using 7-Day Programmable Controller SW4 DRY CONTACT Variable Auto SW5 EXTRA 1 Off On SW8 COMMUNICATIONS RATE Gen. 2 Gen. 4 Dry Contact Mode Setting 1. Variable: Auto/Manual Mode can be chosen by 7-Day Programmable Controller or Wireless Remote Controller (when shipped from factory -> Manual Mode) 2. Auto: For Dry Contact, it is always Auto mode -OFF: Default (does not operate continuously) -ON: Fan operates continuously -OFF: 1.2kbps -ON: 9.6kbps For Multi V systems, DIP switches 1, 2, 6, and 7 must be set to OFF. These DIP switches are used for other models. Ducted High Static High Static 29

30 Ducted High Static Refrigerant Flow Diagram BG, BR Units Figure 8: BG, BR Unit Refrigerant Flow Diagram. Heat Exchanger EEV Filter Cooling Heating MULTI V Ducted Indoor Unit Engineering Manual TH3 TH2 Sirocco Fan TH1 lndoor unit Table 21: BG, BR Unit Refrigerant Pipe Connection Port Diameters. Model Liquid (inch) Vapor (inch) BG Units ARNU073BGA4 ARNU093BGA4 ARNU123BGA4 ARNU153BGA4 ARNU183BGA4 ARNU243BGA4 ARNU283BGA4 ARNU363BGA4 ARNU423BGA4 3/8 Flare 5/8 Flare BR Units ARNU483BRA4 ARNU543BRA4 3/8 Flare 5/8 Flare Filter Table 22: BG, BR Frame Thermistors. Thermistor TH1 TH2 TH3 Description Return air thermistor Pipe in thermistor Pipe out thermistor 30 HIGH STATIC

31 Ducted High Static Refrigerant Flow Diagram B8 Units Figure 9: B8 Unit Refrigerant Flow Diagram. Heat Exchanger EEV Filter Cooling Heating TH3 Sirocco Fan TH2 Check Valve Solenoid Valve Filter TH1 lndoor unit Table 23: B8 Unit Refrigerant Pipe Connection Port Diameters. Model Liquid (inch) Vapor (inch) ARNU763B8A4 3/8 Flare 3/4 Flare ARNU963B8A4 3/8 Flare 7/8 Flare Ducted High Static Table 24: B8 Unit Thermistors. Thermistor TH1 TH2 TH3 Description Return air thermistor Pipe in thermistor Pipe out thermistor High Static 31

32 Ducted High Static External Static Pressure and Air Flow Tables BG, BR, B8 Units MULTI V Ducted Indoor Unit Engineering Manual Table 25: BG Unit External Static Pressure and Air Flow Table. Set Value Static Pressure (in. wg) ,066 1,059 1, ,281 1,271 1,133 1,073 1, ,334 1,324 1,197 1,133 1,084 1, ,465 1,447 1,432 1,271 1,218 1,133 1, ,500 1,497 1,469 1,349 1,274 1,236 1,221 1, Table 26: BR Unit External Static Pressure and Air Flow Table. Set Value Static Pressure (in. wg) ,642 1,543 1,349 1, ,762 1,628 1,518 1,183 1, ,839 1,772 1,691 1,395 1, ,815 1,808 1,779 1,568 1,522 1,176 1,133 1, ,892 1,896 1,868 1,762 1,705 1,433 1,419 1,158 1, ,967 1,794 1,582 1,504 1,416 1,327 1, ,843 1,794 1,776 1,613 1,575 1,370 1, ,921 1,808 1,779 1,624 1,536 Table 27: B8 Unit External Static Pressure and Air Flow Table. Set Value Static Pressure (in. wg) , , ,249 1, ,511 2,009 1, ,694 2,461 1, ,941 2,775 2,380 1, ,167 3,076 2,786 2,387 1, ,298 3,227 3,040 2,719 2,345 1,787 1, ,298 3,227 3,118 2,998 2,680 2,454 2,147 1, ,291 3,224 3,118 2,998 2,864 2,733 2,443 2,398 1, All static pressure air flow rates are listed in CFM. 2. The tables above show the correlation between air flow rates and external static pressure. 3. The tables above show the available external static pressure range. If the external static pressure of the installed indoor unit is less than the lowest value (as mentioned in the table), the indoor unit components can fail. 32 HIGH STATIC

33 Ducted High Static External Static Pressure and Air Flow Charts BG, BR, B8 Units Figure 10: BG Unit External Static Pressure and Air Flow Chart. P ESP Setting 120 ESP Setting 110 ESP Setting 100 ESP Setting 130 ESP Setting 160 ESP Setting 150 ESP Setting Q (CFM) Figure 11: BR Unit External Static Pressure and Air Flow Chart. P ESP Setting 90 ESP Setting 100 ESP Setting 120 ESP Setting 110 ESP Setting 126 Ducted High Static Q (CFM) Figure 12: B8 Unit External Static Pressure and Air Flow Chart. P ESP Setting Q (CFM) ESP Setting 105 ESP Setting 95 ESP Setting 85 High Static 33

34 Ducted High Static External Static Pressure Ranges BG, BR, B8 Units MULTI V Ducted Indoor Unit Engineering Manual Table 28: BG Unit External Static Pressure Ranges. Model Capacity (MBh) Mode Setting Value Standard ESP (in. wg) CFM Min. ESP (in. wg) Max. ESP (in. wg) High High Mid (Factory Set) Low ARNU073BGA4 7.5 High Standard Mid Low High High Mid (Factory Set) Low ARNU093BGA4 9.6 High Standard Mid Low High High Mid (Factory Set) Low ARNU123BGA High Standard Mid Low High High Mid (Factory Set) Low ARNU153BGA High Standard Mid Low High High Mid (Factory Set) Low ARNU183BGA High Standard Mid Low High High Mid (Factory Set) Low ARNU243BGA High Standard Mid Low High High Mid (Factory Set) Low ARNU283BGA High Standard Mid Low High 151 1,084 High Mid , (Factory Set) Low ARNU363BGA High 138 1,003 Standard Mid Low High 157 1,218 High Mid , (Factory Set) Low 151 1,084 ARNU423BGA High 145 1,130 Standard Mid , Low The table above shows the available E.S.P. range. 34 HIGH STATIC

35 Ducted High Static External Static Pressure Ranges BG, BR, B8 Units Table 29: BR Unit External Static Pressure Ranges. Model Capacity (MBh) Mode Setting Value Standard ESP (in. wg) CFM Min. ESP (in. wg) Max. ESP (in. wg) High 116 1,582 High Mid , (Factory Set) Low 106 1,176 ARNU483BRA High 106 1,568 Standard Mid , Low 95 1,183 High 121 1,801 High Mid , (Factory Set) Low 111 1,434 ARNU543BRA High 112 1,819 Standard Mid , Low 102 1,395 Table 30: B8 Unit External Static Pressure Ranges. Model Capacity (MBh) Mode Setting Value Standard ESP (in. wg) CFM Min. ESP (in. wg) Max. ESP (in. wg) High 102 2,119 High Mid , (Factory Set) Low 98 1,766 ARNU763B8A High 86 2,260 Standard Mid , Low 83 1,766 High 105 2,542 High Mid , (Factory Set) Low 102 2,260 ARNU963B8A High 94 2,684 Standard Mid , Low 89 2,260 The tables above show the available E.S.P. range. Ducted High Static High Static 35

36 Ducted High Static Acoustic Data Sound Pressure Levels Figure 13: Sound Pressure Measurement Location. DISCHARGE SUCTION DUCT DUCT 6.6 ft. 3.3 ft. 4.9 ft. Measurements are taken 4.9 ft away from the front of the unit. Sound pressure levels are measured in db(a) with a tolerance of ±3. Sound pressure levels are tested in an anechoic chamber under ISO Standard Operating Conditions: Power source: 220V/60 Hz Sound level will vary depending on a range of factors including the construction (acoustic absorption coefficient) of a particular room in which the unit was installed. MULTI V Ducted Indoor Unit Engineering Manual Table 31: Ducted High Static Indoor Unit Sound Pressure Levels. Model Sound Pressure Levels db(a) High Fan Speed Medium Fan Speed Low Fan Speed BG Units ARNU073BGA ARNU093BGA ARNU123BGA ARNU153BGA ARNU183BGA ARNU243BGA ARNU283BGA ARNU363BGA ARNU423BGA BR Units ARNU483BRA ARNU543BRA B8 Units ARNU763B8A ARNU963B8A Figure 14: ARNU073BGA4, ARNU093BGA4, and ARNU123BGA4 Sound Pressure Level Diagrams. ARNU073BGA4 ARNU093BGA4 ARNU123BGA4 36 HIGH STATIC

37 Ducted High Static Acoustic Data Sound Pressure Levels Figure 15: ARNU153BGA4, ARNU183BGA4, and ARNU243BGA4 Sound Pressure Level Diagrams. ARNU153BGA4 ARNU183BGA4 ARNU243BGA4 Figure 16: ARNU283BGA4, ARNU363BGA4, and ARNU423BGA4 Sound Pressure Level Diagrams. ARNU283BGA4 ARNU363BGA4 ARNU423BGA4 Ducted High Static High Static 37

38 Ducted High Static Acoustic Data Sound Pressure Levels Figure 17: ARNU483BRA4, ARNU543BRA4 Sound Pressure Level Diagrams. ARNU483BRA4 ARNU543BRA4 MULTI V Ducted Indoor Unit Engineering Manual Figure 18: ARNU763B8A4, ARNU963B8A4 Sound Pressure Level Diagrams. ARNU763B8A4 ARNU963B8A4 38 HIGH STATIC

39 Ducted High Static Acoustic Data Sound Power Levels Table 32: Ducted High Static Indoor Unit Sound Power Levels. Model Sound Power Levels db(a) High Fan Speed BG Units ARNU073BGA4 53 ARNU093BGA4 54 ARNU123BGA4 55 ARNU153BGA4 56 ARNU183BGA4 58 ARNU243BGA4 60 ARNU283BGA4 61 ARNU363BGA4 62 ARNU423BGA4 64 BR Units ARNU483BRA4 62 ARNU543BRA4 65 B8 Units ARNU763B8A4 70 ARNU963B8A4 72 Data is valid under diffuse field conditions. Data is valid under nominal operating conditions. Sound power level is measured using rated conditions, and tested in a reverberation room per ISO 3741 standards. Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. Reference acoustic intensity: 0dB = 10E-6μW/m 2 Figure 19: ARNU073BGA4, ARNU093BGA4, and ARNU123BGA4 Sound Power Level Diagrams. ARNU073BGA4 ARNU093BGA4 ARNU123BGA4 Ducted High Static High Static 39

40 Ducted High Static Acoustic Data Sound Power Levels Figure 20: ARNU153BGA4, ARNU183BGA4, and ARNU243BGA4 Sound Power Level Diagrams. ARNU153BGA4 ARNU183BGA4 ARNU243BGA4 MULTI V Ducted Indoor Unit Engineering Manual Figure 21: ARNU283BGA4, ARNU363BGA4, and ARNU423BGA4 Sound Power Level Diagrams. ARNU283BGA4 ARNU363BGA4 ARNU423BGA4 40 HIGH STATIC

41 Ducted High Static Acoustic Data Sound Power Levels Figure 22: ARNU483BRA4 and ARNU543BRA4 Sound Power Level Diagrams. ARNU483BRA4 ARNU543BRA4 Figure 23: ARNU763B8A4 and ARNU963B8A4 Sound Power Level Diagrams. ARNU763B8A4 ARNU963B8A4 Ducted High Static High Static 41

42 Ducted High Static Cooling Capacity Tables ARNU073BGA4, ARNU093BGA4, ARNU123BGA4 MULTI V Ducted Indoor Unit Engineering Manual Table 33: ARNU073BGA4, ARNU093BGA4, ARNU123BGA4 Cooling Capacity Table. Model No. / Capacity Index ARNU073BGA4 / 7.5 ARNU093BGA4 / 9.6 ARNU123BGA4 / 12.3 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). 42 HIGH STATIC

43 Ducted High Static Cooling Capacity Tables ARNU153BGA4, ARNU183BGA4, ARNU243BGA4 Table 34: ARNU153BGA4, ARNU183BGA4, ARNU243BGA4 Cooling Capacity Table. Model No. / Capacity Index ARNU153BGA4 / 15.4 ARNU183BGA4 / 19.1 ARNU243BGA4 / 24.2 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). Ducted High Static High Static 43

44 Ducted High Static Cooling Capacity Tables ARNU283BGA4, ARNU363BGA4, ARNU423BGA4 MULTI V Ducted Indoor Unit Engineering Manual Table 35: ARNU283BGA4, ARNU363BGA4, ARNU423BGA4 Cooling Capacity Table. Model No. / Capacity Index ARNU283BGA4 / 28.0 ARNU363BGA4 / 36.2 ARNU423BGA4 / 42.0 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). 44 HIGH STATIC

45 Ducted High Static Cooling Capacity Tables ARNU483BRA4, ARNU543BRA4, ARNU763B8A4 Table 36: ARNU483BRA4, ARNU543BRA4, ARNU763B8A4 Cooling Capacity Table. Model No. / Capacity Index ARNU483BRA4 / 48.1 ARNU543BRA4 / 54.0 ARNU763B8A4 / 76.4 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). Ducted High Static High Static 45

46 Ducted High Static Cooling Capacity Tables ARNU963B8A4 MULTI V Ducted Indoor Unit Engineering Manual Table 37: ARNU963B8A4 Cooling Capacity Table. Model No. / Capacity Index ARNU963B8A4 / 95.9 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). 46 HIGH STATIC

47 Ducted High Static Heating Capacity Tables ARNU073BGA4, ARNU093BGA4, ARNU123BGA4, ARNU153BGA4 Table 38: ARNU073BGA4, ARNU093BGA4, ARNU123BGA4, ARNU153BGA4 Heating Capacity Table. Model No. / Outdoor Air Temp. Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC TC TC TC TC TC TC TC MBh MBh MBh MBh MBh MBh MBh MBh ARNU073BGA4 / 7.5 ARNU093BGA4 / 9.6 ARNU123BGA4 / 12.3 ARNU153BGA4 / 15.4 TC: Total Capacity (MBh) Ducted High Static High Static 47

48 Ducted High Static Heating Capacity Tables ARNU183BGA4, ARNU243BGA4, ARNU283BGA4, ARNU363BGA4 MULTI V Ducted Indoor Unit Engineering Manual Table 39: ARNU183BGA4, ARNU243BGA4, ARNU283BGA4, ARNU363BGA4 Heating Capacity Table. Model No. / Outdoor Air Temp. Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC TC TC TC TC TC TC TC MBh MBh MBh MBh MBh MBh MBh MBh ARNU183BGA4 / 19.1 ARNU243BGA4 / 24.2 ARNU283BGA4 / 28.0 ARNU363BGA4 / 36.2 TC: Total Capacity (MBh) HIGH STATIC

49 Ducted High Static Heating Capacity Tables ARNU423BGA4, ARNU483BRA4, ARNU543BRA4, ARNU763B8A4 Table 40: ARNU423BGA4, ARNU483BRA4, ARNU543BRA4, ARNU763B8A4 Heating Capacity Table. Model No. / Outdoor Air Temp. Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC TC TC TC TC TC TC TC MBh MBh MBh MBh MBh MBh MBh MBh ARNU423BGA4 / 42.0 ARNU483BRA4 / 48.1 ARNU543BRA4 / 54.0 ARNU763B8A4 / 76.4 TC: Total Capacity (MBh) Ducted High Static High Static 49

50 Ducted High Static Heating Capacity Tables ARNU963B8A4 MULTI V Ducted Indoor Unit Engineering Manual Table 41: ARNU963B8A4 Heating Capacity Table. Model No. / Outdoor Air Temp Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC MBh TC MBh TC MBh TC MBh TC MBh TC MBh TC MBh TC MBh ARNU963B8A4 / TC: Total Capacity (MBh). 50 HIGH STATIC

51 Ducted High Static Optional Accessories Table 42: Optional Accessories for Ducted High Static Indoor Units. Accessory High Efficiency Filter Box Dynamic V8 Low Profile Air Cleaner Dynamic V8 VL Replacement Filter Pads Model Number ZFBXBG01A (For 7~42MBh Ducted High Static Indoor Units) ZFBXBR01A (For 48-54MBh Ducted High Static Indoor Units) ZFBXB801A (For 76-96MBh Ducted High Static Indoor Units) ZPLMV201A (2VL) ZPLMV402A (4VL) ZFLT1301A (4-Pack) ZFLT1302A (24-Pack) Return Air Grille ZGRLRA01A (Louvered) ZGRLRA02A (Egg Crate) Return Air Plenum All accessories are sold separately. ZPLMV201A (2VL) ZPLMV402A (4VL) Ducted High Static High Static 51

52 MULTI V Ducted Indoor Unit Engineering Manual 52 HIGH STATIC

53 CEILING-CONCEALED DUCTED LOW STATIC Mechanical Specifications on page 54 General Data on page 55 Electrical Data on page 56 External Dimensions on page 57 Electrical Wiring Diagram on page 58 Refrigerant Flow Diagrams on page 62 External Static Pressure and Air Flow on page 63 External Static Pressure Ranges on page 65 Acoustic Data on page 66 Capacity Tables on page 69

54 DUCTED LOW Static Mechanical Specifications MULTI V Ducted Indoor Unit Engineering Manual Casing The case is a low profile design with a maximum height of eight inches designed to mount concealed above the finished ceiling. Fan supply air is front horizontal with a rear horizontal field convertible to a bottom return. The unit is manufactured with coated metal. Cold surfaces are covered with a polystyrene insulating material. 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 HT-700 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 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 anti-fungal treatment. 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 54 Low STATIC upon outdoor unit operating mode. In Heating mode, the microprocessor control will activate the indoor unit when indoor room temperature falls below set-point 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 wallmounted 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 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 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, eighteen (18) to twenty-one (21) fins per inch. Controls Features Auto changeover (Heat Recovery only) Auto operation Auto restart Child lock Dual thermistor control Dual set-point control Filter life and power consumption 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)

55 DUCTED LOW STATIC General Data L1, L2, L3 Units Table 43: Ducted Low Static (L1, L2, L3 Frames) Indoor Unit General Data. Model No. ARNU073L1G4 ARNU093L1G4 ARNU123L2G4 ARNU153L2G4 ARNU183L2G4 ARNU243L3G4 Cooling Mode Performance Capacity (Btu/h) 7,500 9,600 12,300 15,400 19,100 24,000 Power Input 1 (W) Heating Mode Performance Capacity (Btu/h) 8,500 10,900 13,600 17,100 21,500 27,300 Power Input 1 (W) Entering Mixed Air Cooling Max. ( F WB) Heating Min. ( F DB) Unit Data Refrigerant Type 2 R410A R410A R410A R410A R410A R410A Refrigerant Control EEV EEV EEV EEV EEV EEV Sound Pressure 3 db(a) (H/M/L) 27 / 26 / / 26 / / 29 / / 31 / / 34 / / 35 / 32 Net Unit Weight (lbs.) Shipping Weight (lbs.) Communication Cable 4 (No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 Fan Type Sirocco Sirocco Sirocco Sirocco Sirocco Sirocco Motor Housing Motor/Drive Brushless Digitally Controlled / Direct Airflow Rate H/M/L (CFM) Standard Mode 270 / 230 / / 250 / / 310 / / 360 / / 450 / / 570 / 430 Airflow Rate H/M/L (CFM) High Mode (Factory Set) 270 / 230 / / 250 / / 310 / / 360 / / 450 / / 570 / 430 External Static Pressure (in. wg) Standard Mode External Static Pressure (in. wg) High Mode (Factory Set) Piping Liquid Line (in., O.D.) 1/4 Flare 1/4 Flare 1/4 Flare 1/4 Flare 1/4 Flare 3/8 Flare Vapor Line (in., O.D.) 1/2 Flare 1/2 Flare 1/2 Flare 1/2 Flare 1/2 Flare 5/8 Flare 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. This data is rated 0 ft above sea level, with 25 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. All capacities are net with a combination ratio between %. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB). Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 1 Power Input is rated at high speed. 2 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. 3 Sound Pressure levels are tested in an anechoic chamber under ISO Standard All communication cable to be minimum 18 AWG, 2-conductor, stranded, shielded and must comply with applicable and national code. 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 Low Static Low Static 55

56 DUCTED LOW Static Electrical Data MULTI V Ducted Indoor Unit Engineering Manual Table 44: Ducted Low Static (L1, L2, L3 Frames) Indoor Unit Electrical Data. L1 Units Model Voltage Range MCA MOP Rated Amps (A) Power Supply Power Input (W) Hz Volts Phase Cooling Heating ARNU073L1G ARNU093L1G L2 Units ARNU123L2G ARNU153L2G ARNU183L2G L3 Units ARNU243L3G 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. 56 Low STATIC

57 DUCTED LOW STATIC External Dimensions L1, L2, L3 Units Figure 24: ARNU L1G4, ARNU123~183L2G4, ARNU243L3G4 Dimensions. 13/16 D Air Outlet 11-1/2 2-5/8 4-11/16 7-1/2 3-15/ /16 Vapor Pipe Connection Liquid Pipe Connection Drain Pipe Connection Power Supply Connection 27-9/16 7-1/2 6-1/16 13/ /4 8-11/16 L1 : 14-7/16 L2 : 22-1/16 L3 : 29-3/4 C Air Inlet 5-5/16 1-3/8 L1 : 2-15/16 L2 : 3-1/16 L3 : 3-3/16 Ducted Low Static B A Center of Gravity Unit: inches Note: All measurements have a tolerance of ±1/4 in. ARNU073L1G4 ARNU093L1G4 ARNU123L2G4 ARNU153L2G4 ARNU183L2G4 ARNU243L3G4 A B C D 30-1/2 27-9/ / /8 35-7/ /4 33-7/8 46-1/4 43-5/ /8 41-3/4 Low Static 57

58 MULTI V Ducted Indoor Unit Engineering Manual DUCTED LOW Static Electrical Wiring Diagram L1 Units Figure 25: ARNU073L1G4, ARNU093L1G4 Wiring Diagram. 58 Low STATIC

59 Ducted Low Static Electrical Wiring Diagram L1 Units Table 45: L1 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 PC power supply Power supply connection CN-FLOAT Float switch input Float switch sensing CN-ZONE Zone controller Zone 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-CC Dry contact Dry Contact connection CN-PTC Auxiliary heater Connection for Auxiliary Heater CN-PIPE/OUT Discharge pipe sensor Pipe out thermistor CN-LEAK Refrigerant leak detector Refrigerant leak detector connection CN-PIPE/IN Suction pipe sensor Pipe in thermistor CN-REMO Wired remote controller Wired remote control connection CN-ROOM Room sensor Room air thermistor CN-D/PUMP Drain pump output AC output for drain pump CN-485 Communication Connection between indoor and outdoor units Table 46: L1 Unit DIP Switch Settings. Ducted Low Static DIP Switch Setting Off On Remarks SW3 GROUP Master Slave Group Control setting using 7-Day Programmable Controller SW4 DRY CONTACT Variable Auto Dry Contact Mode Setting 1. Variable: Auto/Manual Mode can be chosen by 7-Day Programmable Controller or Wireless Remote Controller (when shipped from factory -> Manual Mode) 2. Auto: For Dry Contact, it is always Auto mode SW5 EXTRA 1 Off On SW8 COMMUNICATIONS RATE Gen. 2 Gen. 4 -OFF: Default (does not operate continuously) -ON: Fan operates continuously -OFF: 1.2kbps -ON: 9.6kbps For Multi V systems, DIP switches 1, 2, 6, and 7 must be set to OFF. These DIP switches are used for other models. Low Static 59

60 MULTI V Ducted Indoor Unit Engineering Manual DUCTED LOW Static Electrical Wiring Diagram L2, L3 Units Figure 26: ARNU123L2G4, ARNU153L2G4, ARNU183L2G4, ARNU243L3G4 Wiring Diagram. 60 Low STATIC

61 Ducted Low Static Electrical Wiring Diagram L2, L3 Units Table 47: L2, L3 Unit Wiring Diagram Legend. DIP Switch Setting Off On Remarks SW3 GROUP Master Slave Group Control setting using 7-Day Programmable Controller SW4 DRY CONTACT Variable Auto SW5 EXTRA 1 Off On SW8 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 PC power supply Power supply connection CN-FLOAT Float switch input Float switch sensing CN-ZONE Zone controller Zone 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-CC Dry contact Dry Contact connection CN-PTC Auxiliary heater Connection for Auxiliary Heater CN-PIPE/OUT Discharge pipe sensor Pipe out thermistor CN-LEAK Refrigerant leak detector Refrigerant leak detector connection CN-PIPE/IN Suction pipe sensor Pipe in thermistor CN-REMO Wired remote controller Wired remote control connection CN-ROOM Room sensor Room air thermistor CN-D/PUMP Drain pump output AC output for drain pump CN-485 Communication Connection between indoor and outdoor units Table 48: L2, L3 Unit DIP Switch Settings. COMMUNICATIONS RATE Gen. 2 Gen. 4 Dry Contact Mode Setting 1. Variable: Auto/Manual Mode can be chosen by 7-Day Programmable Controller or Wireless Remote Controller (when shipped from factory -> Manual Mode) 2. Auto: For Dry Contact, it is always Auto mode -OFF: Default (does not operate continuously) -ON: Fan operates continuously -OFF: 1.2kbps -ON: 9.6kbps For Multi V systems, DIP switches 1, 2, 6, and 7 must be set to OFF. These DIP switches are used for other models. Ducted Low Static Low Static 61

62 DUCTED LOW Static Refrigerant Flow Diagram L1, L2, L3 Units Figure 27: L1, L2, L3 Unit Refrigerant Flow Diagram. Heat Exchanger EEV Filter Cooling Heating TH3 TH2 Sirocco Fan Filter MULTI V Ducted Indoor Unit Engineering Manual TH1 lndoor unit Table 49: L1, L2, L3 Unit Refrigerant Pipe Connection Port Diameters. Model Liquid (inch) Vapor (inch) L1 Units ARNU073L1G4 ARNU093L1G4 1/4 Flare 1/2 Flare L2 Units ARNU123L2G4 ARNU153L2G4 ARNU183L2G4 1/4 Flare 1/2 Flare L3 Units ARNU243L3G4 3/8 Flare 5/8 Flare Table 50: L1, L2, L3 Unit Thermistors. Thermistor TH1 TH2 TH3 Description Return air thermistor Pipe in thermistor Pipe out thermistor 62 Low STATIC

63 DUCTED LOW Static External Static Pressure and Air Flow Tables L1, L2, L3 Units Table 51: L1 Unit External Static Pressure and Air Flow Table. Set Value Static Pressure (in. wg) Table 52: L2 Unit External Static Pressure and Air Flow Table. Set Value Static Pressure (in. wg) Table 53: L3 Unit External Static Pressure and Air Flow Table. Set Value Static Pressure (in. wg) All static pressure air flow rates are listed in CFM. 2. The tables above show the correlation between air flow rates and external static pressure. 3. The tables above show the available external static pressure range. Ducted Low Static If the external static pressure of the installed indoor unit is less than the lowest value (as mentioned in the table), the indoor unit components can fail. Low Static 63

64 Ducted Low Static External Static Pressure and Air Flow Charts L1, L2, L3 Units Figure 28: L1 Unit External Static Pressure and Air Flow Chart. MULTI V Ducted Indoor Unit Engineering Manual External Sta c Pressure(in-wg) ESP Setting 90 ESP Setting 100 ESP Setting 110 Air Flow(cfm) ESP Setting 120 ESP Setting Figure 29: L2 Unit External Static Pressure and Air Flow Chart. External Sta c Pressure(in-wg) ESP 0.12 Setting ESP Setting 0.08 ESP Setting ESP ESP Setting Setting Air Flow(cfm) Figure 30: L3 Unit External Static Pressure and Air Flow Chart. External Sta c Pressure(in-wg) ESP Setting ESP Setting ESP ESP ESP ESP Setting Setting Setting Setting Air Flow(cfm)) 64 Low STATIC

65 DUCTED LOW Static External Static Pressure Ranges L1, L2, L3 Units Table 54: L1 Unit External Static Pressure Ranges. Model Capacity (MBh) Mode Setting Value Standard ESP (in. wg) CFM Min. ESP (in. wg) Max. ESP (in. wg) High High Mid (Factory Set) Low ARNU073L1G4 7.5 High Standard Mid Low High High Mid (Factory Set) Low ARNU093L1G4 9.6 High Standard Mid Low Table 56: L2 Unit External Static Pressure Ranges. Model Capacity (MBh) Mode Setting Value Standard ESP (in. wg) CFM Min. ESP (in. wg) Max. ESP (in. wg) High High Mid (Factory Set) Low ARNU123L2G High Standard Mid Low High High Mid (Factory Set) Low ARNU153L2G High Standard Mid Low High High Mid (Factory Set) Low ARNU183L2G High Standard Mid Low Ducted Low Static Table 55: L3 Unit External Static Pressure Ranges. Model Capacity (MBh) Mode Setting Value Standard ESP (in. wg) CFM Min. ESP (in. wg) Max. ESP (in. wg) High High Mid (Factory Set) Low ARNU243L3G High Standard Mid Low The tables above show the available E.S.P. range. Low Static 65

66 Ducted Low Static Acoustic Data Sound Pressure Levels Figure 31: Sound Pressure Measurement Location. DISCHARGE SUCTION DUCT DUCT 6.6 ft. 3.3 ft. 4.9 ft. Measurements are taken 4.9 ft away from the front of the unit. Sound pressure levels are measured in db(a) with a tolerance of ±3. Sound pressure levels are tested in an anechoic chamber under ISO Standard Operating Conditions: Power source: 220V/60 Hz Sound level will vary depending on a range of factors including the construction (acoustic absorption coefficient) of a particular room in which the unit was installed. MULTI V Ducted Indoor Unit Engineering Manual Table 57: Ducted Low Static Sound Pressure Levels. Sound Pressure Levels db(a) Model High Fan Speed Medium Fan Speed Low Fan Speed L1 Units L2 Units L3 Units ARNU073L1G ARNU093L1G ARNU123L2G ARNU153L2G ARNU183L2G ARNU243L3G Figure 32: ARNU073L1G4, ARNU093L1G4, and ARNU123L2G4 Sound Pressure Level Diagrams. ARNU073L1G4 ARNU093L1G4 ARNU123L2G4 66 Low STATIC

67 Ducted Low Static Acoustic Data Sound Pressure Levels / Sound Power Levels Figure 33: ARNU153L2G4, ARNU183L2G4, and ARNU243L3G4 Sound Pressure Level Diagrams. ARNU153L2G4 ARNU183L2G4 ARNU243L3G4 Sound Power Levels Table 58: Ducted Low Static Sound Power Levels. Model Sound Power Levels db(a) L1 Units ARNU073L1G4 48 ARNU093L1G4 49 L2 Units ARNU123L2G4 52 ARNU153L2G4 53 ARNU183L2G4 54 L3 Units ARNU243L3G4 58 Data is valid under diffuse field conditions. Data is valid under nominal operating conditions. Sound power level is measured using rated conditions, and tested in a reverberation room per ISO 3741 standards. Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. Reference acoustic intensity: 0dB = 10E-6μW/m 2 Ducted Low Static Low Static 67

68 Ducted Low Static Acoustic Data Sound Power Levels Figure 34: ARNU073L1G4, ARNU093L1G4, and ARNU123L2G4 Sound Power Level Diagrams. ARNU073L1G4 ARNU093L1G4 ARNU123L2G4 MULTI V Ducted Indoor Unit Engineering Manual Figure 35: ARNU153L2G4, ARNU183L2G4, and ARNU243L3G4 Sound Power Level Diagrams. ARNU153L2G4 ARNU183L2G4 ARNU243L3G4 68 Low STATIC

69 Ducted Low Static Cooling Capacity Tables ARNU073L1G4, ARNU093L1G4, ARNU123L2G4 Table 59: ARNU073L1G4, ARNU093L1G4, ARNU123L2G4 Cooling Capacity Table. Model No. / Capacity Index ARNU073L1G4 / 7.5 ARNU093L1G4 / 9.6 ARNU123L2G4 / 12.3 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). Ducted Low Static Low Static 69

70 Ducted Low Static Cooling Capacity Tables ARNU153L2G4, ARNU183L2G4, ARNU243L3G4 MULTI V Ducted Indoor Unit Engineering Manual Table 60: ARNU153L2G4, ARNU183L2G4, ARNU243L3G4 Cooling Capacity Table. Model No. / Capacity Index ARNU153L2G4 / 15.4 ARNU183L2G4 / 19.1 ARNU243L3G4 / 24.2 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). 70 Low STATIC

71 Ducted Low Static Heating Capacity Tables ARNU073L1G4, ARNU093L1G4, ARNU123L2G4, ARNU153L2G4 Table 61: ARNU073L1G4, ARNU093L1G4, ARNU123L2G4, ARNU153L2G4 Heating Capacity Table. Model No. / Outdoor Air Temp. Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC TC TC TC TC TC TC TC MBh MBh MBh MBh MBh MBh MBh MBh ARNU073L1G4 / 7.5 ARNU093L1G4 / 9.6 ARNU123L2G4 / 12.3 ARNU153L2G4 / 15.4 TC: Total Capacity (MBh) Ducted Low Static Low Static 71

72 Ducted Low Static Heating Capacity Tables ARNU183L2G4, ARNU243L3G4 MULTI V Ducted Indoor Unit Engineering Manual Table 62: ARNU183L2G4, ARNU243L3G4 Heating Capacity Table. Model No. / Outdoor Air Temp Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC MBh TC MBh TC MBh TC MBh TC MBh TC MBh TC MBh TC MBh ARNU183L2G4 / ARNU243L3G4 / 24.2 TC: Total Capacity (MBh) Low STATIC

73 CEILING-CONCEALED DUCTED BUILT IN Mechanical Specifications on page 74 General Data on page 75 Electrical Data on page 76 External Dimensions on page 77 Electrical Wiring Diagram on page 78 Refrigerant Flow Diagrams on page 80 External Static Pressure and Air Flow on page 81 External Static Pressure Ranges on page 83 Acoustic Data on page 84 Capacity Tables on page 87 Optional Accessories on page 91

74 DUCTED Built In Mechanical Specifications MULTI V Ducted Indoor Unit Engineering Manual Casing The case is designed to mount concealed above a finished ceiling. Supply air is front horizontal with a dedicated bottom vertical return. The unit is manufactured with coated metal. Cold surfaces are covered with a coated polystyrene insulating material. 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 HR-2407 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 a limited amount of additional resistance to airflow caused by field connected ductwork or other airflow restricting devices. Ceiling Grille/Duct Kit An optional flush-mounted ceiling return air grille and accordion-style canvas duct kit provides a short-ducted return air solution. Air Filter Return air is filtered with a removable, washable filter with anti-fungal treatment. 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 74 Built In upon outdoor unit operating mode. In Heating mode, the microprocessor control will activate the indoor unit when indoor room temperature falls below set-point temperature and signals the outdoor unit to begin the 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 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, eighteen (18) to twenty-one (21) fins per inch. Controls Features Auto changeover (Heat Recovery only) Auto operation Auto restart Child lock Dual thermistor control Dual set-point control Filter life and power consumption 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)

75 DUCTED Built In General Data B3, B4 Units Table 63: Ducted Built In (B3, B4 Frames) Indoor Unit General Data. Model No. ARNU073B3G4 ARNU093B3G4 ARNU123B3G4 ARNU153B3G4 ARNU183B4G4 ARNU243B4G4 Cooling Mode Performance Capacity (Btu/h) 7,500 9,600 12,300 15,400 19,100 24,200 Power Input 1 (W) Heating Mode Performance Capacity (Btu/h) 8,500 10,900 13,600 17,100 21,500 27,300 Power Input 1 (W) Entering Mixed Air Cooling Max. ( F WB) Heating Min. ( F DB) Unit Data Refrigerant Type 2 R410A R410A R410A R410A R410A R410A Refrigerant Control EEV EEV EEV EEV EEV EEV Sound Pressure 3 db(a) (H/M/L) 33 / 32 / / 33 / / 34 / / 40 / / 40 / / 43 / 37 Net Unit Weight (lbs.) Shipping Weight (lbs.) Communication Cable 4 (No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 Fan Type Sirocco Sirocco Sirocco Sirocco Sirocco Sirocco Motor Housing Motor/Drive Brushless Digitally Controlled / Direct Airflow Rate H/M/L (CFM) Standard Mode 283 / 229 / / 247 / / 283 / / 353 / / 424 / / 530 / 353 Airflow Rate H/M/L (CFM) High Mode (Factory Set) 283 / 229 / / 247 / / 283 / / 353 / / 424 / / 530 / 353 External Static Pressure (in. wg) Standard Mode External Static Pressure (in. wg) High Mode (Factory Set) Piping Liquid Line (in., O.D.) 1/4 Flare 1/4 Flare 1/4 Flare 1/4 Flare 1/4 Flare 3/8 Flare Vapor Line (in., O.D.) 1/2 Flare 1/2 Flare 1/2 Flare 1/2 Flare 1/2 Flare 5/8 Flare 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. This data is rated 0 ft above sea level, with 25 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. All capacities are net with a combination ratio between %. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB). Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 1 Power Input is rated at high speed. 2 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. 3 Sound Pressure levels are tested in an anechoic chamber under ISO Standard All communication cable to be minimum 18 AWG, 2-conductor, stranded, shielded and must comply with applicable and national code. 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 Built In Built In 75

76 DUCTED Built In Electrical Data MULTI V Ducted Indoor Unit Engineering Manual Table 64: Ducted Built In (B3, B4 Frames) Indoor Unit Electrical Data. B3 Units Model Voltage Range MCA MOP Rated Amps (A) ARNU073B3G Power Supply Power Input (W) Hz Volts Phase Cooling Heating ARNU093B3G ARNU123B3G ARNU153B3G B4 Units ARNU183B4G ARNU243B4G 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. 76 Built In

77 DUCTED Built In External Dimensions B3, B4 Units Figure 36: ARNU073~153B3G4, ARNU B4G4 Dimensions. With Suction Grill With Suction Grill With Suction Grill & Suction Canvas & Suction Canvas 2-1/2 7-1/2 2-3/8 Return Air 22-5/8 15-1/8 24-5/ /4 10-7/8 8-1/2 1 Drain Liquid Vapor B2 Supply Air A2 A3 C2 B3 C3 9-13/16 7-7/ /16 (Max) 7-1/2 A1 With Suction Grill With Suction Grill & Suction Canvas With Suction Grill Model ARNU073B3G4 ARNU093B3G4 ARNU123B3G4 ARNU153B3G4 ARNU183B4G4 ARNU243B4G4 A1 32-5/8 43-5/16 Power Connection Unit: inches Note: All measurements have a tolerance of ±1/4 in. Ducted Built In Accessory A2 B2 C2 Accessory A3 B3 C3 PBSGB / /8 2-3/16 PBSC / /16 1-9/16 to 9-13/16 PBSGB / /8 2-3/16 PBSC / /16 1-9/16 to 9-13/16 Built In 77

78 MULTI V Ducted Indoor Unit Engineering Manual DUCTED Built In Electrical Wiring Diagram B3, B4 Units Figure 37: ARNU073~153B3G4, ARNU B4G4 Wiring Diagram. 78 Built In

79 Ducted Built In Electrical Wiring Diagram B3, B4 Units Table 65: B3, B4 Unit Wiring Diagram Legend. DIP Switch Setting Off On Remarks SW3 GROUP Master Slave Group Control setting using 7-Day Programmable Controller SW4 DRY CONTACT Variable Auto SW5 EXTRA 1 Off On SW8 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 PC power supply Power supply connection CN-FLOAT Float switch input Float switch sensing CN-ZONE Zone controller Zone 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-CC Dry contact Dry Contact connection CN-PTC Auxiliary heater Connection for Auxiliary Heater CN-PIPE/OUT Discharge pipe sensor Pipe out thermistor CN-LEAK Refrigerant leak detector Refrigerant leak detector connection CN-PIPE/IN Suction pipe sensor Pipe in thermistor CN-REMO Wired remote controller Wired remote control connection CN-ROOM Room sensor Room air thermistor CN-D/PUMP Drain pump output AC output for drain pump CN-485 Communication Connection between indoor and outdoor units Table 66: B3, B4 Unit DIP Switch Settings. COMMUNICATIONS RATE Gen. 2 Gen. 4 Dry Contact Mode Setting 1. Variable: Auto/Manual Mode can be chosen by 7-Day Programmable Controller or Wireless Remote Controller (when shipped from factory -> Manual Mode) 2. Auto: For Dry Contact, it is always Auto mode -OFF: Default (does not operate continuously) -ON: Fan operates continuously -OFF: 1.2kbps -ON: 9.6kbps For Multi V systems, DIP switches 1, 2, 6, and 7 must be set to OFF. These DIP switches are used for other models. Ducted Built In Built In 79

80 DUCTED Built In Refrigerant Flow Diagram B3, B4 Units Figure 38: B3, B4 Unit Refrigerant Flow Diagram. Heat Exchanger EEV Filter Cooling Heating MULTI V Ducted Indoor Unit Engineering Manual TH3 TH2 Sirocco Fan TH1 lndoor unit Table 67: B3, B4 Unit Refrigerant Pipe Connection Port Diameters. Model Liquid (inch) Vapor (inch) B3 Units ARNU073B3G4 ARNU093B3G4 ARNU123B3G4 ARNU153B3G4 1/4 Flare 1/2 Flare B4 Units ARNU183B4G4 1/4 Flare 1/2 Flare ARNU243B4G4 3/8 Flare 5/8 Flare Filter Table 68: B3, B4 Unit Thermistors. Thermistor TH1 TH2 TH3 Description Return air thermistor Pipe in thermistor Pipe out thermistor 80 Built In

81 DUCTED Built In External Static Pressure and Air Flow Tables B3, B4 Units Table 69: B3 Unit External Static Pressure and Air Flow Table. Set Value Static Pressure (in. wg) Table 70: B4 Unit External Static Pressure and Air Flow Table. Set Value Static Pressure (in. wg) Ducted Built In 1. All static pressure air flow rates are listed in CFM. 2. The tables above show the correlation between air flow rates and external static pressure. 3. The tables above show the available external static pressure range. If the external static pressure of the installed indoor unit is less than the lowest value (as mentioned in the table), the indoor unit components can fail. Built In 81

82 Ducted Built In External Static Pressure and Air Flow Charts B3, B4 Units Figure 39: B3 Unit External Static Pressure and Air Flow Chart MULTI V Ducted Indoor Unit Engineering Manual External Sta c Pressure(in-wg) ESP Setting 90 ESP Setting 100 Air Flow(cfm) ESP Setting ESP Setting ESP 0.04 Setting ESP Setting Figure 40: B4 Unit External Static Pressure and Air Flow Chart. External Sta c Pressure(in-wg) ESP ESP 0.06 ESP Setting Setting ESP Setting ESP Setting 110 Setting Air Flow(cfm) 82 Built In

83 DUCTED Built In External Static Pressure Ranges B3, B4 Units Table 71: B3 Unit External Static Pressure Ranges. Model Capacity (MBh) Mode Setting Value Standard ESP (in. wg) CFM Min. ESP (in. wg) Max. ESP (in. wg) High High Mid (Factory Set) Low ARNU073B3G4 7.5 High Standard Mid Low High High Mid (Factory Set) Low ARNU093B3G4 9.6 High Standard Mid Low High High Mid (Factory Set) Low ARNU123B3G High Standard Mid Low High High Mid (Factory Set) Low ARNU153B3G High Standard Mid Low Ducted Built In Table 72: B4 Unit External Static Pressure Ranges. Model Capacity (MBh) Mode Setting Value Standard ESP (in. wg) CFM Min. ESP (in. wg) Max. ESP (in. wg) High High Mid (Factory Set) Low ARNU183B4G High Standard Mid Low High High Mid (Factory Set) Low ARNU243B4G High Standard Mid Low The tables above show the available E.S.P. range. Built In 83

84 Ducted Built In Acoustic Data Sound Pressure Levels Figure 41: Sound Pressure Measurement Location. Ceiling 6.6ft Microphone 4.9ft Measurements are taken 4.9 ft away from the front of the unit. Sound pressure levels are measured in db(a) with a tolerance of ±3. Sound pressure levels are tested in an anechoic chamber under ISO Standard Operating Conditions: Power source: 220V/60 Hz Sound level will vary depending on a range of factors including the construction (acoustic absorption coefficient) of a particular room in which the unit was installed. MULTI V Ducted Indoor Unit Engineering Manual Table 73: Ducted Built In Indoor Unit Sound Pressure Levels. Sound Pressure Levels db(a) Model High Fan Speed Medium Fan Speed Low Fan Speed B3 Units B4 Units ARNU073B3G ARNU093B3G ARNU123B3G ARNU153B3G ARNU183B4G ARNU243B4G Figure 42: ARNU073B3G4, ARNU093B3G4, and ARNU123B3G4 Sound Pressure Level Diagrams. ARNU073B3G4 ARNU093B3G4 ARNU123B3G4 84 Built In

85 Ducted Built In Acoustic Data Sound Pressure Levels / Sound Power Levels Figure 43: ARNU153B3G4, ARNU183B4G4, and ARNU243B4G4 Sound Pressure Level Diagrams. ARNU153B3G4 ARNU183B4G4 ARNU243B4G4 Sound Power Levels Table 74: Ducted Built In Indoor Unit Sound Power Levels. Model Sound Power Levels db(a) B3 Units ARNU073B3G4 53 ARNU093B3G4 54 ARNU123B3G4 55 ARNU153B3G4 60 B4 Units ARNU183B4G4 61 ARNU243B4G4 62 Data is valid under diffuse field conditions. Data is valid under nominal operating conditions. Sound power level is measured using rated conditions, and tested in a reverberation room per ISO 3741 standards. Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. Reference acoustic intensity: 0dB = 10E-6μW/m 2 Ducted Built In Built In 85

86 Ducted Built In Acoustic Data Sound Power Levels Figure 44: ARNU073B3G4, ARNU093B3G4, and ARNU123B3G4 Sound Power Level Diagrams. ARNU073B3G4 ARNU093B3G4 ARNU123B3G4 MULTI V Ducted Indoor Unit Engineering Manual Figure 45: ARNU153B3G4, ARNU183B4G4, and ARNU243B4G4 Sound Power Level Diagrams. ARNU153B3G4 ARNU183B4G4 ARNU243B4G4 86 Built In

87 Ducted Built In Cooling Capacity Tables ARNU073B3G4, ARNU093B3G4, ARNU123B3G4 Table 75: ARNU073B3G4, ARNU093B3G4, ARNU123B3G4 Cooling Capacity Table. Model No. / Capacity Index ARNU073B3G4 / 7.5 ARNU093B3G4 / 9.6 ARNU123B3G4 / 12.3 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). Ducted Built In Built In 87

88 Ducted Built In Cooling Capacity Tables ARNU153B3G4, ARNU183B4G4, ARNU243B4G4 MULTI V Ducted Indoor Unit Engineering Manual Table 76: ARNU153B3G4, ARNU183B4G4, ARNU243B4G4 Cooling Capacity Table. Model No. / Capacity Index ARNU153B3G4 / 15.4 ARNU183B4G4 / 19.1 ARNU243B4G4 / 24.2 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). 88 Built In

89 Ducted Built In Heating Capacity Tables ARNU073B3G4, ARNU093B3G4, ARNU123B3G4, ARNU153B3G4 Table 77: ARNU073B3G4, ARNU093B3G4, ARNU123B3G4, ARNU153B3G4 Heating Capacity Table. Model No. / Outdoor Air Temp. Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC TC TC TC TC TC TC TC MBh MBh MBh MBh MBh MBh MBh MBh ARNU073B3G4 / 7.5 ARNU093B3G4 / 9.6 ARNU123B3G4 / 12.3 ARNU153B3G4 / 15.4 TC: Total Capacity (MBh) Ducted Built In Built In 89

90 Ducted Built In Heating Capacity Tables ARNU183B4G4, ARNU243B4G4 MULTI V Ducted Indoor Unit Engineering Manual Table 78: ARNU183B4G4, ARNU243B4G4 Heating Capacity Table. Model No. / Outdoor Air Temp Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC MBh TC MBh TC MBh TC MBh TC MBh TC MBh TC MBh TC MBh ARNU183B4G4 / ARNU243B4G4 / 24.2 TC: Total Capacity (MBh) Built In

91 Ducted Built In Ducted Built In Optional Accessories Table 79: Optional Accessories for Ducted Built In Indoor Units. Accessory Return Air Grille Return Air Canvas All accessories are sold separately. Model Number PBSGB30 (For 7~15MBh Ducted Built In Indoor Units [B3 Frames]) PBSGB40 (For 18-24MBh Ducted Built In Indoor Units [B4 Frames]) PBSC30 (For 7~15MBh Ducted Built In Indoor Units [B3 Frames]) PBSC40 (For 18-24MBh Ducted Built In Indoor Units [B4 Frames]) Built In 91

92 MULTI V Ducted Indoor Unit Engineering Manual 92 Built In

93 VERTICAL / HORIZONTAL AIR HANDLER Mechanical Specifications on page 94 General Data on page 96 Electrical Data on page 98 External Dimensions on page 99 Electrical Wiring Diagram on page 101 Refrigerant Flow Diagrams on page 103 External Static Pressure and Air Flow on page 104 External Static Pressure Ranges on page 105 Heater Capacity Airflow / Static Pressure Drop Factors on page 106 Acoustic Data on page 107 Capacity Tables on page 111 Optional Accessories on page 116

94 Vertical / Horizontal Air Handler Mechanical Specifications MULTI V Ducted Indoor Unit Engineering Manual Casing The unit is designed to operate in the vertical up flow configuration or horizontal left end supply air. Return air opening is on the bottom in the vertical position or right end in the horizontal position. Return air plenum sub-base is to be field-provided. The supply air connection is male flange. The unit case is made of 22-gauge coated metal and the external surfaces are finished with a high gloss baked enamel finish. Finish color is morning fog (medium beige). Cold surfaces are galvanized steel. The cold surfaces of the case are internally insulated with ½ inch foil faced, polystyrene fiber insulation. The inside surface of the fan assembly door access panel is treated with ½ inch polystyrene fiber insulation, encapsulated on both sides, and sealed along the edges with a reinforced foil-faced covering to prevent deterioration caused by panel removal. All access panels are provided with gasket seals to minimize air leakage. The unit case is designed to accept an internal, optional, LG electric strip heater. The unit bears the ETL label. Unit breaker, fuses, and / or disconnect are provided by others. Fan Assembly and Control The indoor unit has an integral fan assembly consisting of a galvanized steel housing and a forward-curved fan wheel. The direct drive fan/motor assembly is mounted on rubber grommets isolating the rotating assembly from the fan housing. The fan motor is a Brushless Digitally-Controlled design (BLDC), having 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. Fan speed is controlled using a microprocessor-based direct digital control algorithm that provides a minimum of 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). The setting provides delivery of the high speed air volume against an external static pressure of up to 1.0 in-wg. temperature safety switch, and interconnecting control wiring harness with a quick connect plug for easy connection to the air handler control board. Auxiliary heat modules are available in nominal capacities of 5, 10, 15, and 20 kw at 230/60/1. Heating elements are powered from a field provided separate power source. 5 and 10 kw modules are powered from a single power wire. The 15 and 20 kw modules are powered from two power wires. Heating module breakers, fuses, and / or disconnects are to be field provided. Electric Heat Module Controls The electric heat module is capable of operating at full capacity during system defrost and oil return operations. When the air handler is operating in the Cooling, Dry, or Fan Only modes, the electric heater operation is locked out and unavailable. When the air handler is operating in the Heating mode, the heater is field selectable to operate when the room temperature is 2 F lower than set-point or manually if provided with a start/stop signal from a third-party outside source. Microprocessor Controls The unit is equipped with an integrated microprocessor-based controller capable of performing functions necessary to operate the system without the use of a wall-mounted controller. A temperature thermistor is mounted in the return air stream. All unit operating parameters, excluding the operation 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 (RS-485). The microprocessor control provides the following functions: auto addressing, selfdiagnostics, auto restart following power restoration, and will operate the indoor unit using one of the following five operation modes: Air Filter The unit comes with a filter rack capable of accepting a fieldprovided 16 x 20 x 1 (NJ chassis) or 24 x 20 x 1 (NK chassis) filter cartridge. The filter rack is equipped with guides that keep the filter centered in the rack. Filter service access is from the front of the unit without removing the coil or fan area access panels. Filter access door is provided with thumb screws that can be removed. Optional Auxiliary Electric Heat Module(s) LG optional electric heat modules are designed for field installation in the reheat position. The electric heat module is provided with heating elements, contractors, relays, high 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. 94 VAH

95 Vertical / Horizontal Air Handler Mechanical Specifications In Heating mode, the microprocessor control does not begin fan operation until coil pipe temperature reaches 76ºF. Significant airflow is generated when pipe temperature reaches 80 F. A field-selectable option maintains fan operation for 30 minutes following cooling cycle operations. 1. Wall-mounted wire controller 2. Factory-mounted return air thermistor or the optional wallmounted wired remote temperature sensor. 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. A single indoor unit has the capability of being controlled by up to two local wired controllers. 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 local or central controller, displayed diagnostic codes are specific and provide the service technician with the reason for the code displayed. Handling Condensate The drain pan is designed to work with a gravity building drain system. If condensate lifts/pumps are needed, they are to be field-provided. A secondary drain port plug is provided allowing the pan to be drained for service. Condensate float safety switch connections are available on the main control board for connection of a field supplied float safety switch. Condensate Drain Pan The condensate drain pan is constructed of HIPS (high impact polystyrene resin). Coil The indoor unit coil is constructed with grooved design copper tubes with slit coil fins, 2 to 3 rows, 18 fins per inch. Controls Features Auto changeover (Heat Recovery only) Auto operation Auto restart Child lock Dual thermistor control External static pressure control Group control Hot start Self diagnostics Timer (on / off) Weekly schedule Fan speed control Dual set-point control Filter life and power consumption display Multiple auxiliary heater applications Vertical / Horizontal Air Handler VAH 95

96 Vertical / Horizontal Air Handler General Data NJ Frames MULTI V Ducted Indoor Unit Engineering Manual Table 80: Vertical / Horizontal (NJ Frame) Air Handler Unit General Data. Model No. ARNU123NJA4 ARNU183NJA4 ARNU243NJA4 ARNU303NJA4 ARNU363NJA4 Cooling Mode Performance Capacity (Btu/h) 12,000 18,000 24,000 30,000 36,000 Power Input 1 (W) Heating Mode Performance Capacity (Btu/h) 13,500 20,000 27,000 34,000 40,000 Power Input 1 (W) Entering Mixed Air Cooling Max. ( F WB) Heating Min. ( F DB) Unit Data Refrigerant Type 2 R410A R410A R410A R410A R410A Refrigerant Control EEV EEV EEV EEV EEV Sound Pressure 3 db(a) (H/M/L) 42 / 41 / / 42 / / 42 / / 43 / / 44 / 43 Net Unit Weight (lbs.) Shipping Weight (lbs.) Communication Cable 4 (No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 Fan Type Sirocco Sirocco Sirocco Sirocco Sirocco Motor Housing Motor/Drive Brushless Digitally Controlled / Direct Airflow Rate H/M/L (CFM) Standard Mode 530 / 480 / / 530 / / 640 / / 800 / / 880 / 800 Airflow Rate H/M/L (CFM) High Mode (Factory Set) 530 / 480 / / 530 / / 640 / / 800 / / 880 / 800 External Static Pressure (in. wg) Standard Mode External Static Pressure (in. wg) High Mode (Factory Set) Piping Liquid Line (in., O.D.) 1/4 Flare 1/4 Flare 3/8 Flare 3/8 Flare 3/8 Flare Vapor Line (in., O.D.) 1/2 Flare 1/2 Flare 5/8 Flare 5/8 Flare 5/8 Flare 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. This data is rated 0 ft above sea level, with 25 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. All capacities are net with a combination ratio between %. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB). Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 1 Power Input is rated at high speed. 2 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. 3 Sound Pressure levels are tested in an anechoic chamber under ISO Standard All communication cable to be minimum 18 AWG, 2-conductor, stranded, shielded and must comply with applicable and national code. 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. 96 VAH

97 Vertical / Horizontal Air Handler General Data NK Frames Table 81: Vertical / Horizontal (NK Frame) Air Handler Unit General Data. Model No. ARNU423NKA4 ARNU483NKA4 ARNU543NKA4 Cooling Mode Performance Capacity (Btu/h) 42,000 48,000 54,000 Power Input 1 (W) Heating Mode Performance Capacity (Btu/h) 46,000 54,000 60,000 Power Input 1 (W) Entering Mixed Air Cooling Max. ( F WB) Heating Min. ( F DB) Unit Data Refrigerant Type 2 R410A R410A R410A Refrigerant Control EEV EEV EEV Sound Pressure 3 db(a) (H/M/L) 46 / 44 / / 47 / / 49 / 47 Net Unit Weight (lbs.) Shipping Weight (lbs.) Communication Cable 4 (No. x AWG) 2 x 18 2 x 18 2 x 18 Fan Type Sirocco Sirocco Sirocco Motor Housing Motor/Drive Brushless Digitally Controlled / Direct Airflow Rate H/M/L (CFM) Standard Mode 1,250 / 1,100 / 1,000 1,400 / 1,260 / 1,000 1,475 / 1,400 / 1,260 Airflow Rate H/M/L (CFM) High Mode (Factory Set) 1,250 / 1,100 / 1,000 1,400 / 1,260 / 1,000 1,475 / 1,400 / 1,260 External Static Pressure (in. wg) Standard Mode External Static Pressure (in. wg) High Mode (Factory Set) Piping Liquid Line (in., O.D.) 3/8 Flare 3/8 Flare 3/8 Flare Vapor Line (in., O.D.) 5/8 Flare 5/8 Flare 5/8 Flare 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. This data is rated 0 ft above sea level, with 25 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. All capacities are net with a combination ratio between %. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB). Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 1 Power Input is rated at high speed. 2 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. 3 Sound Pressure levels are tested in an anechoic chamber under ISO Standard All communication cable to be minimum 18 AWG, 2-conductor, stranded, shielded and must comply with applicable and national code. 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. Vertical / Horizontal Air Handler VAH 97

98 Vertical / Horizontal Air Handler Electrical Data MULTI V Ducted Indoor Unit Engineering Manual Table 82: Vertical / Horizontal (NJ, NK Frames) Air Handler Unit Electrical Data. Model Voltage Range MCA MOP Rated Amps (A) NJ Frames ARNU123NJA Power Supply Power Input (W) Hz Volts Phase Cooling Heating ARNU183NJA ARNU243NJA ARNU303NJA ARNU363NJA NK Frames ARNU423NKA ARNU483NKA ARNU543NKA 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. 98 VAH

99 Vertical / Horizontal Air Handler External Dimensions NJ Frame Figure 46: ARNU123~363NJA4 Dimensions. Supply Air opening 48-11/ / / / /8 1-15/ /4 TOP VIEW 2-1/8 2-1/16 1-5/8 7/8 Wiring knockouts 1-11/16 Wiring knockouts 1-9/16 7/8 Wiring knockouts 49-5/ /16 2-9/16 SIDE VIEW Liquid pipe Vapor pipe Vertical / Horizontal Air Handler Drain connection for upflow application Return Air opening 14-5/16 1-1/2 4-11/16 BOTTOM VIEW Unit: inches Note: All measurements have a tolerance of ±1/4 in. Drain connection for horizontal application 9-15/16 13 FRONT VIEW 1-9/16 VAH 99

100 Vertical / Horizontal Air Handler External Dimensions NK Frame Figure 47: ARNU423~543NKA4 Dimensions. Supply Air opening 55-3/16 MULTI V Ducted Indoor Unit Engineering Manual /4 12-1/8 21-1/4 25 Return Air opening 1-9/ /16 2-1/16 2-3/16 1-5/8 7/8 Wiring knockouts 1-11/16 Wiring knockouts 1-9/ /16 7/8 Wiring knockouts 55-3/16 2-9/ /4 1-1/2 SIDE VIEW Liquid pipe Vapor pipe Drain connection for upflow application Unit: inches Note: All measurements have a tolerance of ±1/4 in. Drain connection for horizontal application 4-11/ /16 20 FRONT VIEW 1-9/ VAH

101 Vertical / Horizontal Air Handler Vertical / Horizontal Air Handler Electrical Wiring Diagram NJ, NK Frame Figure 48: ARNU123~363NJA4, ARNU NKA4 Wiring Diagram. VAH 101

102 Vertical / Horizontal Air Handler Electrical Wiring Diagram NJ, NK Frame MULTI V Ducted Indoor Unit Engineering Manual Table 83: NJ, NK Frame Wiring Diagram Legend. Terminal Purpose Function CN-POWER AC Power supply AC Power line CN-MOTOR1 Fan motor output Motor output of BLDC RV-VM Sub PC power supply Power supply connection CN_OUT Heater Connection for heater CN-FLOAT Float switch input Float switch sensing CN-ZONE Zone controller Zone 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-CC Dry contact Dry Contact connection CN-PIPE/OUT (RD) Discharge pipe sensor Pipe out thermistor CN-LEAK (VI) Refrigerant leak detector Refrigerant leak detector connection CN-PIPE/IN (WH) Suction pipe sensor Pipe in thermistor CN-REMO (GN) Wired remote controller Wired remote control connection CN-ROOM (YL) Room sensor Room air thermistor CN-D/PUMP Drain pump output AC output for drain pump CN-485 Communication Connection between indoor and outdoor units Table 84: NJ, NK Frame DIP Switch Settings. DIP Switch Setting Off On Remarks SW3 GROUP Master Slave Group Control setting using 7-Day Programmable Controller SW4 DRY CONTACT Variable Auto SW5 EXTRA 1 Off On SW6 Heater Off On SW8 COMMUNICATIONS RATE Gen. 2 Gen. 4 Dry Contact Mode Setting 1. Variable: Auto/Manual Mode can be chosen by 7-Day Programmable Controller or Wireless Remote Controller (when shipped from factory -> Manual Mode) 2. Auto: For Dry Contact, it is always Auto mode -OFF: Default (does not operate continuously) -ON: Fan operates continuously -ON: Automatic heater operation -OFF: Default (heater manual operation) -OFF: 1.2kbps -ON: 9.6kbps For Multi V indoor units without electric heaters, DIP switches 1, 2, 6,, and 7 must be set to OFF. These DIP switches are used for other models. For Multi V systems with an electric heater, DIP switches 5 and 6 must be set to ON. SW 5 ON: Fan operates continuously. During defrost or oil return operation, uninterrupted heating can be attained as a result of continuous heater and fan operation. SW 5 OFF: Fan does not operate continuously. There will be a reduction in heating capacity during defrost or oil return operation. SW 6 ON: Automatic heater operation. The heater operates automatically according to heater logic without manual intervention. SW 6 OFF: Heater manual operation. Manual operation is required for on/off, but heater operation will follow heater logic. 102 VAH

103 Vertical / Horizontal Air Handler Refrigerant Flow Diagram NJ, NK Frames Figure 49: NJ, NK Frame Refrigerant Flow Diagram. Sirroco Fan Heat Exchanger EEV Filter Cooling Heating TH3 TH2 TH1 Filter lndoor unit Table 85: NJ, NK Frame Refrigerant Pipe Connection Port Diameters. Model Liquid (inch) Vapor (inch) NJ Frames ARNU123NJA4 ARNU183NJA4 1/4 Flare 1/2 Flare ARNU243NJA4 ARNU303NJA4 ARNU363NJA4 NK Frames ARNU423NKA4 3/8 Flare 5/8 Flare ARNU483NKA4 ARNU543NKA4 3/8 Flare 5/8 Flare Vertical / Horizontal Air Handler Table 86: NJ, NK Frame Thermistors. Thermistor TH1 TH2 TH3 Description Return air thermistor Pipe in thermistor Pipe out thermistor VAH 103

104 Vertical / Horizontal Air Handler External Static Pressure and Air Flow Charts NJ, NK Frames Figure 50: NJ Frame External Static Pressure and Air Flow Chart (in wg) 0.6 (in wg) 0.5 (in wg) 0.4 (in wg) 0.3 (in wg) MULTI V Ducted Indoor Unit Engineering Manual Pressure CFM Figure 51: NK Frame External Static Pressure and Air Flow Chart Pressure (in wg) 0.1 (in wg) 0.8 (in wg) 0.7 (in wg) 0.6 (in wg) 0.5 (in wg) 0.4 (in wg) 0.3 (in wg) 0.2 (in wg) 0.1 (in wg) CFM 104 VAH

105 Vertical / Horizontal Air Handler External Static Pressure and Air Flow NJ, NK Frames Table 87: NJ Frame External Static Pressure and Air Flow Table. Model No. / Capacity (MBh) ARNU123NJA / 12 ARNU183NJA4 / 18 ARNU243NJA4 / 24 ARNU303NJA4 / 30 ARNU363NJA4 / 36 Flow Rate Static Pressure (in. WG) Mode CFM High 530 ** *92 *92 *92 Mid 480 ** *92 *92 *92 Low 380 ** *92 *92 *92 High 580 ** *95 *95 *95 Mid 530 ** *92 *92 *92 Low 480 ** *92 *92 *92 High *98 *98 *98 Mid *96 *96 *96 Low 480 ** *92 *92 *92 High *103 *103 *103 Mid *101 *101 *101 Low *96 *96 *96 High *103 *103 *103 *103 Mid *103 *103 *103 Low *101 *101 *101 Table 88: NK Frame External Static Pressure and Air Flow Table. Model No. / Capacity (MBh) ARNU423NKA4 / 42 ARNU483NKA4 / 48 ARNU543NKA4 / 54 * Flow rate (CFM) decreases by 3% per 0.1 in. WG. ** Fan external static pressure is at minimum value. Flow Rate Static Pressure (in. WG) Mode CFM High 1, *115 *115 Mid 1, Low 1, High 1, *115 *115 Mid 1, *115 Low 1, High 1, *115 *115 Mid 1, *115 *115 Low 1, *115 Minimum airflow rates are listed in CFM. If the flow rate (CFM) is increased by 400 CFM/ton from 1.5 tons to 2.5 tons of capacity, then ESP value should be increased by 4. If the flow rate (CFM) is increased by 400 CFM/ton from 3.0 tons to 4.5 tons of capacity, then The ESP value should be increased by 5. Factory Default is high static pressure. High static pressure is 0.5 in wg. Low static pressure is 0.3 in wg. Vertical Air Handling Units are UL Listed up to 0.5 in wg external static pressure, including air filter, set coil, and largest kw size heater, unless otherwise noted. Vertical / Horizontal Air Handler If the ESP is set incorrectly, the air conditioning may malfunction. VAH 105

106 Vertical / Horizontal Air Handler Heater Capacity Airflow / Static Pressure Drop Factors MULTI V Ducted Indoor Unit Engineering Manual Table 89: Minimum Airflow by Heater Capacity. Capacity (MBh [tons]) Heater Capacity (kw) (1.0) 380 Not available Not available Not available 18 (1.5) 380 Not available Not available Not available 24 (2.0) Not available Not available 30 (2.5) Not available Not available 36 (3.0) Not available Not available 42 (3.5) 1,000 1,000 1,000 1, (4.0) 1,000 1,000 1,000 1, (4.5) 1,300 1,300 1,300 1,300 Airflow rates in the table above are listed in CFM. Vertical Air Handling Units are UL Listed up to 0.5 in wg external static pressure, including air filter, set coil, and largest kw size heater, unless otherwise noted. Do not operate with less than the minimum airflow. If an airflow is used below the minimum, there is a risk of fire, which may lead to physical injury or death. Flow rate (CFM) is decreased by 3% per 0.1 in wg from 0.8 in wg to 1.0 in wg. Do not operate with less than the minimum airflow. If an airflow is used below the minimum, there is a risk of damage to the product. Table 90: Electric Heater Static Pressure Drop Factors. Heater Capacity (kw) Static Pressure Drop (in. wg) in wg = inch water gauge If the electric heater has been installed, then the ESP value has to be set. For every increase in static pressure by 0.01 in wg, the ESP value should be increased by 1. If the ESP setting value is inappropriate, the provided safety device will turn the heater off according to the airflow. Table 91: Air Filter Static Pressure Drop Factors. Capacity (MBh(tons)) Flow Rate (CFM) Static Pressure Drop (in wg) High (480) (1.0) Middle (380) Low (380) High(530) (1.5) Middle(480) Low(380) High(710) (2.0) Middle(640) Low(480) High(880) (2.5) Middle(800) Low(630) High(990) (3.0) Middle(880) Low(800) High(1250) (3.5) Middle(1100) Low(1000) High(1400) (4.0) Middle(1260) Low(1000) High(1475) (4.5) Middle(1400) Low(1260) If the air filter has been installed, the ESP value has to be set. For every increase in static pressure by 0.01 in. wg, the ESP value should be increased by VAH

107 Vertical / Horizontal Air Handler Acoustic Data Sound Pressure Levels Figure 52: Sound Pressure Measurement Location. Microphone 3.3ft Measurements are taken 3.3 ft away from the front of the unit. Sound pressure levels are measured in db(a) with a tolerance of ±3. Sound pressure levels are tested in an anechoic chamber under ISO Standard Operating Conditions: Power source: 220V/60 Hz Sound level will vary depending on a range of factors including the construction (acoustic absorption coefficient) of a particular room in which the unit was installed. 3.3ft Table 92: Vertical / Horizontal Air Handler Unit Sound Pressure Levels. Model Sound Pressure Levels db(a) High Fan Speed Medium Fan Speed Low Fan Speed NJ Frames ARNU123NJA ARNU183NJA ARNU243NJA ARNU303NJA ARNU363NJA NK Frames ARNU423NKA ARNU483NKA ARNU543NKA Figure 53: ARNU123NJA4, ARNU183NJA4, and ARNU243NJA4 Sound Pressure Level Diagrams. ARNU123NJA4 ARNU183NJA4 ARNU243NJA4 Vertical / Horizontal Air Handler VAH 107

108 Vertical / Horizontal Air Handler Acoustic Data Sound Pressure Levels Figure 54: ARNU303NJA4, ARNU363NJA4, and ARNU423NKA4 Sound Pressure Level Diagrams. ARNU303NJA4 ARNU363NJA4 ARNU423NKA4 MULTI V Ducted Indoor Unit Engineering Manual Figure 55: ARNU483NKA4 and ARNU543NKA4 Sound Pressure Level Diagrams. ARNU483NKA4 ARNU543NKA4 108 VAH

109 Vertical / Horizontal Air Handler Acoustic Data Sound Power Levels Sound Power Levels Table 93: Vertical / Horizontal Air Handler Unit Sound Power Levels. Model Sound Power Levels db(a) High Fan Speed NJ Frames ARNU123NJA4 59 ARNU183NJA4 59 ARNU243NJA4 60 ARNU303NJA4 60 ARNU363NJA4 61 NK Frames ARNU423NKA4 61 ARNU483NKA4 62 ARNU543NKA4 63 Data is valid under diffuse field conditions. Data is valid under nominal operating conditions. Sound power level is measured using rated conditions, and tested in a reverberation room per ISO 3741 standards. Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. Reference acoustic intensity: 0dB = 10E-6μW/m 2 Figure 56: ARNU123NJA4, ARNU183NJA4, and ARNU243NJA4 Sound Power Level Diagrams. ARNU123NJA4 ARNU183NJA4 ARNU243NJA4 Vertical / Horizontal Air Handler VAH 109

110 Vertical / Horizontal Air Handler Acoustic Data Sound Power Levels Figure 57: ARNU303NJA4, ARNU363NJA4, and ARNU423NKA4 Sound Power Level Diagrams. ARNU303NJA4 ARNU363NJA4 ARNU423NKA4 MULTI V Ducted Indoor Unit Engineering Manual Figure 58: ARNU483NKA4 and ARNU543NKA4 Sound Power Level Diagrams. ARNU483NKA4 ARNU543NKA4 110 VAH

111 Vertical / Horizontal Air Handler Cooling Capacity Tables ARNU123NJA4, ARNU183NJA4, ARNU243NJA4 Table 94: ARNU123NJA4, ARNU183NJA4, ARNU243NJA4 Cooling Capacity Table. Model No. / Capacity Index ARNU123NJA4 / 12.0 ARNU183NJA4 / 18.0 ARNU243NJA4 / 24.0 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). Vertical / Horizontal Air Handler VAH 111

112 Vertical / Horizontal Air Handler Cooling Capacity Tables ARNU303NJA4, ARNU363NJA4, ARNU423NKA4 MULTI V Ducted Indoor Unit Engineering Manual Table 95: ARNU303NJA4, ARNU363NJA4, ARNU423NKA4 Cooling Capacity Table. Model No. / Capacity Index ARNU303NJA4 / 30.0 ARNU363NJA4 / 36.0 ARNU42NKA4 / 42.0 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). 112 VAH

113 Vertical / Horizontal Air Handler Cooling Capacity Tables ARNU483NKA4, ARNU543NKA4 Table 96: ARNU483NKA4, ARNU543NKA4 Cooling Capacity Table. Model No. / Capacity Index ARNU483NKA4 / 48.0 ARNU543NKA4 / 54.0 Outdoor Air Temp. ( F DB) Indoor Air Temperature ( F DB / WB) 68 / / / / / / / 76 TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh TC: Total Capacity (MBh); SHC: Sensible Heat Capacity (MBh). Vertical / Horizontal Air Handler VAH 113

114 Vertical / Horizontal Air Handler Heating Capacity Tables ARNU123NJA4, ARNU183NJA4, ARNU243NJA4, ARNU303NJA4 MULTI V Ducted Indoor Unit Engineering Manual Table 97: ARNU073B3G4, ARNU093B3G4, ARNU123B3G4, ARNU153B3G4 Heating Capacity Table. Model No. / Outdoor Air Temp. Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC TC TC TC TC TC TC TC MBh MBh MBh MBh MBh MBh MBh MBh ARNU123NJA4 / 12.0 ARNU183NJA4 / 18.0 ARNU243NJA4 / 24.0 ARNU303NJA4 / 30.0 TC: Total Capacity (MBh) VAH

115 Vertical / Horizontal Air Handler Heating Capacity Tables ARNU363NJA4, ARNU423NKA4, ARNU483NKA4, ARNU543NKA4 Table 98: ARNU363NJA4, ARNU423NKA4, ARNU483NKA4, ARNU542NKA4 Heating Capacity Table. Model No. / Outdoor Air Temp. Indoor Air Temperature ( F DB) Capacity Index F DB F WB TC TC TC TC TC TC TC TC MBh MBh MBh MBh MBh MBh MBh MBh ARNU363NJA4 / 36.0 ARNU42NKA4 / 42.0 ARNU483NKA4 / 48.0 ARNU543NKA4 / 54.0 TC: Total Capacity (MBh) Vertical / Horizontal Air Handler VAH 115

116 Vertical / Horizontal Air Handler Optional Accessories Table 99: Optional Accessories for Vertical / Horizontal Air Handler Units. Accessory 5kW Electric Heater 10kW Electric Heater 15kW Electric Heater 20kW Electric Heater All accessories are sold separately. Model Number ANEH053B1 ANEH103B2 ANEH153B2 ANEH203B2 MULTI V Ducted Indoor Unit Engineering Manual Figure 59: Electric Heater. Example: 5kW Capacity Heater Bi metal Bracket Terminal Block Heater Coil Relay Heater Cable Image shown above may vary depending on model capacity. Table 100: Electric Heater Capacities. Indoor Unit Model No. / Capacity (MBh) Model Number / Heater Capacity ANEH053B1 (5kW) ANEH103B2 (10kW) ANEH153B2 (15kW) ANEH203B2 (20kW) ARNU123NJA4 (12) X Not available Not available Not available ARNU183NJA4 (18) X Not available Not available Not available ARNU243NJA4 (24) X X Not available Not available ARNU303NJA4 (30) X X Not available Not available ARNU363NJA4 (36) X X Not available Not available ARNU423NKA4 (42) X X X X ARNU483NKA4 (48) X X X X ARNU543NKA4 (54) X X X X For additional information, refer to the Electric Heater Manual. 116 VAH

117 APPLICATION GUIDELINES Selecting the Best Location on page 118 General Mounting - High, Low, and Built In Ducted Units on page 120 General Mounting - Vertical / Horizontal Air Handling Units on page 122 General Drain Piping Information on page 124 Wiring Guidelines on page 126 Wired Controller Location on page 128 Acronyms on page 129

118 Application Guidelines Selecting the Best Location MULTI V Ducted Indoor Unit Engineering Manual Selecting the Best Location Do s Place the unit where air circulation will not be blocked. Place the unit where drainage can be obtained easily and to minimize the length of the condensate drain piping. Place the unit where noise prevention is taken into consideration. Place the unit in a location that can support a load four times the indoor unit weight, and where the indoor unit can be level. Ensure there is sufficient maintenance space. Locate the indoor unit in a location where it can be easily connected to the outdoor unit / heat recovery unit. Don ts Avoid installing the unit near high-frequency generators. Do not install the unit near a doorway. The unit should not be installed near a heat or steam source, or where considerable amounts of oil, iron powder, or flour are used. (These materials may generate condensate, cause a reduction in heat exchanger efficiency, or the drain pump to malfunction. If this is a potential problem, install a ventilation fan large enough to vent out these materials.) The unit should not be installed where sulfuric acid and flammable or corrosive gases are generated, vented into, or stored. There is risk of fire, explosion, and physical injury or death. The unit may be damaged, may malfunction, and / or will not operate as designed if installed in any of the conditions listed. If the unit is installed near a body of water, the installation parts are at risk of corroding. Appropriate anti-corrosion methods should be taken for the unit and all installation parts. Figure 60: Selecting the Best Location / Minimum Clearance Requirements (for High Static, Low Static, Built In Ducted Units). Unit: inch Figure 61: Minimum Clearances for Vertical / Horizontal Air Handler Units. Minimum 14 inches More than 23-5/8 inches Front 23-5/8 Service access 23-5/8 x 23-5/8 Control box 39-3/8 Minumim 13/16 for High and Low Static Ducted Units Minimum 14 inches Rear 0 inches 0 inches* 23-5/8 0 inches* *When using top panel access holes for power wiring / communications cable Installing in an Area Exposed to Unconditioned Air In some installation applications, areas (floors, walls) in some rooms may be exposed to unconditioned air (room may be above or next to an unheated garage or storeroom). To countermeasure: Figure 62: Installing Near a Heat or Steam Source. Indoor Unit Verify that carpet is or will be installed (carpet may increase the temperature by three [3] degrees). Add insulation between the floor joists. Install radiant heat or another type of heating system to the floor. Include enough distance Heat or steam source Install a ventilation fan with sufficient capacity 118 Guidelines

119 Application Guidelines Selecting the Best Location Figure 63: Service Clearances for High Static Ducted Units. Figure 64: Service Clearances for Low Static and Built In Ducted Units. Service access 23-5/8 x 23-5/8 Control box A (Minimum) B (Minimum) B Unit: inch A Figure 65: Minimum Clearances for Built In Ducted Units with Accessories. Minimum 7-5/8 With Return Air Grille Service Space B A Ceiling Application Guidelines Minimum 7-5/8 With Return Air Grille and Return Air Canvas Duct Kit Refer to Return Air Grille and Return Air Canvas Installation Manual for detail installation of built in ducted units. Unit: inch Table 101: Service Clearance Dimensions For High Static, Low Static, and Built In Ducted Units. Frame Dimensions (inches) A B High Static Ducted BG 23-5/8 23-5/8 BR 23-5/8 23-5/8 B8 23-5/8 23-5/8 Low Static Ducted L1 31-1/2 31-1/2 L2 31-1/2 39-3/8 L3 31-1/2 47-1/4 Built In Ducted B3 23-5/8 35-7/16 B4 23-5/8 43-5/16 Guidelines 119

120 Application Guidelines General Mounting - High, Low, and Built In Ducted Units MULTI V Ducted Indoor Unit Engineering Manual General Mounting - High, Low, and Built In Ducted Units The ceiling should be strong and solid enough to protect the indoor unit from vibration. Refer to dimensions table below for each indoor unit type. Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. Figure 66: High Static Ducted BG, BR Frame Bolt Locations. A B I H G C E D F Drainage Point Apply a filter accessory at the air return opening. Install the unit with a slope towards the drainage point to ensure condensate drains easily. Figure 67: High Static Ducted B8 Frame Bolt Locations. A B K L F J Table 102: High Static Ducted BG, BR, B8 Frame Suspension Bolt Positions Frame Dimensions (inches) A B C D E F G H I J K L BG 48-9/ / /8 1-3/4 17-3/4 1-3/16 3-5/ /16 7-5/ BR 50-7/ / /16 2-1/4 23-1/4 1-3/ / /8 11-9/ B8 63-7/8 61-5/8 22-7/8 11-1/2 27-3/8 55-1/8 18-1/8 44-3/ / /8 17-9/16 5/8 EC G D Table 103: Low Static L1, L2, L3 Suspension Bolt Positions. Frame Dimension (inches) A B C D E F G H I J L1 28-7/8 30-7/ /4 27-9/16 1-7/16 7-1/2 13/ /8 27-9/16 L2 36-3/4 38-5/ /4 27-9/16 1-7/16 7-1/2 13/ /8 6-1/8 35-7/16 L3 44-5/8 46-3/ /4 27-9/16 1-7/16 7-1/2 13/ /4 6-1/8 43-5/16 H I Figure 68: Low Static Ducted Bolt Locations. E D C G J A B F I H Drain Hole 120 Guidelines

121 Application Guidelines General Mounting - High, Low, and Built In Ducted Units Table 104: Built In Ducted Suspension Bolt Positions. Dimensions (inches) Frame A B C D E F G H I J B3 33-7/ / /8 3-11/16 7-1/2 7/8 31-5/16 6-7/ /8 B4 44-7/ / /8 3-11/16 7-1/2 7/ /16 6-7/ /16 Figure 69: Built In Ducted Bolt Locations. B A J G E C D General Mounting Procedure 1. Select and mark the areas where the hanging bolts should be placed. 2. Drill the holes. 3. Install the unit horizontally using a level gauge. Do not damage power wiring during installation. There is risk of electric shock, which may result in physical injury or death. Do not damage power wiring during installation. There is a risk of equipment malfunction, which may result in property damage. Figure 71: Hanging Bolt Installation. Hanging bolt (W3/8 or M10) Nut (W3/8 or M10) Spring washer (M10) Flat washer for M10 (accessory) Drainage point Figure 70: Drilling Holes for the Hanging Bolts. H I F Application Guidelines The following parts are field supplied: Hanging bolt - W-3/8 or 1/2 Nut - W-3/8 or M10 Spring washer - M10 Flat washer for M10 (accessory) Nut (W3/8 or M10) Included with the indoor unit: Flat washer - M10 The threaded rod hangers (bolts) and hardware must be securely tightened to prevent the unit from falling from its installation location. There is a risk of personal injury from falling equipment. Figure 72: Old Versus New Building Hanging Bolt Installation. Old Building 1 Set Anchor 2 Plate Washer 3 Spring Washer 4 Nut 5 Hanging Bolts New Building Guidelines 121

122 Application Guidelines General Mounting - Vertical / Horizontal Air Handler Units MULTI V Ducted Indoor Unit Engineering Manual General Mounting - Vertical / Horizontal Air Handler Units Vertical / horizontal air handler units can be installed either in an upflow or a horizontal-left position. General Guidelines Support platforms should be sturdy enough to support the air handler unit plus any accessories including filter boxes. The size of the support should be bigger than the air handler unit; the unit itself should be placed at the center of the support. Vibration isolators (field-supplied) must be installed between the air handler unit and the support(s). Upflow installation has to be applied if a return plenum and a supply duct are present. Secure the plenum to support adapters and duct work. To prevent air leaks, seal all ducts following local codes. Follow all relevant building codes in installations in which an external condensate pan may be necessary. Supports for air handler units should be located in or above the external condensate pan. Specific Guidelines for Horizontal-Left Installation Units should not be installed where the access panels face up or down, nor where filter access is obstructed. If the air handler unit is suspended, use angled steel brackets with threaded rods as support. To ensure proper condensate drainage, the air handler unit must be installed so it is within 1/8 level of its length and width. Figure 73: Upflow Installation. Field-Supplied Supply Duct Field-Supplied Return Plenum Figure 74: Horizontal-Left Installation. Field-Supplied Supply Duct More than 3/8 inch threaded rod Field-Supplied Return Plenum More than 1-1/2 inch X 1-1/2 inch angle A B Recommended length more than 26 inch with 2 inch clearance on both sides of unit C Suspension Support Locations Table 105: Horizontal-Left Installation Dimensions. Model No. Capacity (Btu/h) Dimensions (inches) A B C NJ Frames ARNU123NJA2 12,000 ARNU183NJA2 18,000 ARNU243NJA2 24, /8 ARNU303NJA2 30,000 ARNU363NJA2 36,000 NK Frames ARNU423NKA2 42,000 ARNU483NKA2 48, ARNU543NKA2 54, Guidelines

123 Application Guidelines General Mounting - Vertical / Horizontal Air Handler Units Duct Work For Vertical / Horizontal Air Handler Units Use at least ten (10) M4-25L screws when attaching the supply duct to the vertical-horizontal air handler unit. Figure 75: Attaching Ducts to the Vertical / Horizontal Air Handler Unit. To prevent vibration transmission, install flexible connectors between the supply duct and the vertical-horizontal air handler unit. If an electrical heater is included, the flexible connector must be constructed from a heat-resistant material. When routed through unconditioned spaces, ducts must be insulated and covered with vapor barriers. Internal acoustical insulation lining may be necessary for a metal duct system if it does not have a 90 elbow and ten (10) feet of main duct to the first branch takeoff. At least ten (10) screws (M4-25L) Fibrous ducts could be used as a substitute if built and installed in accordance with the most recent edition of the Sheet Metal and Air Conditioning Contractors National Association (SMACNA) Construction Standard. Fibrous ducts and acoustical linings must follow National Fire Protection Association (NFPA) Standards 90A or 90B as tested by UL Standard 181 for Class 1 ducts. Seal around the ducts to prevent air leaks. At least six (6) screws (M-4-25L) More than 1 inch Application Guidelines Table 106: Vertical / Horizontal Air Handler Unit Duct Connection Dimensions Table. Dimensions (inches) Model No. A B C Height Width Depth D E F G H NJ Frames ARNU123NJA2 ARNU183NJA2 48-5/ /4 1-9/ / /8 ARNU243NJA2 ARNU303NJA2 ARNU363NJA2 NK Frames ARNU423NKA2 48-5/ /4 1-9/ / /8 ARNU483NKA2 ARNU543NKA2 48-5/ /4 1-9/ / /8 Figure 76: Vertical / Horizontal Air Handler Unit Duct Connection Dimensions Diagram. Refrigerant Pipe Connections Drain Connections for Horizontal-Left Installation Air Filter Cover Front Drain Connections for Upflow Installation Right Side Bottom Top Guidelines 123

124 APPLICATION GUIDELINES General Drain Piping Information General Drain Piping Information All ducted indoor units generate water during cooling operation, therefore, how to properly handle this condensation must be considered. High Static, Low Static, and Built In Ducted indoor units include factory-installed drain pumps; Vertical / Horizontal Air Handler units have a gravity drain. Depending on the location of the indoor unit, condensation can be drained directly to the outside of the building, or a common indoor unit drainage piping system can be installed. Figure 77: High Static, Low Static, Built In Ducted Indoor Unit Drain Pump to Drain Piping System. Metal clamp Max /16 inches PVC Elbow Hanger distance 3.3~4.9 feet PVC Piping Hanger Bracket 1/50~1/100 slope MULTI V Ducted Indoor Unit Engineering Manual Vertical / Horizontal Air Handler Unit Drain Information Avoid blocking filter access panel when connecting the condensate drain lines. An additional external condensate line should run from the unit into the pan. The entire condensate line should be drained from the external condensate pan. Point the drain hose downward for easy drain flow. Do not use pipe joint connection or PVC/CPVC for the unit drain line connection. Use Teflon tape. A field-supplied external condensate pan should be installed underneath the entire vertical / horizontal air handler unit. If not, damage may result due to condensate overflow. Table 107: Indoor Unit Drainage Specifications. Indoor Unit BG, BR, B8 Frame High Static Ducted L1, L2, L3 Frame Low Static Ducted B3, B4 Frame Built In Ducted NJ, NK Frame Vertical / Horizontal Air Handler Unit Drain Type 27-1/2 in. Lift Drain Pump, Factory Installed Gravity Drain Pipe Dia. (ID, in.) Ø1 Ø1 Drain pump Insulation Flexible drain hose Figure 78: Vertical / Horizontal Air Handler Unit Drain Piping System. Drain for Upflow Installations Horizontal-Left Drain Access Hole Air Filter Cover Supplementary drain with proper trap. (Fieldsupplied kit can be used.) Drain for Horizontal-Left Installations Main drain along with suitable trap. (A field-supplied trap with sufficient depth can be used. Standard-sized traps are not sufficient. Refer to the U-Trap Specifications figure for the recommended condensate trap.) Figure 79: Vertical / Horizontal Air Handler Unit U-Trap Specifications. Install the U-Trap to prevent leaks caused by blocking the intake air filter. Applied U-Trap Dimensions A 2-9/16 inch B 2C C 2 x SP SP = External Pressure (in. WG) Ex) External Pressure = 0.4 in. WG A 2-9/16 inches B 1-7/12 inches C 13/16 inches C A B U-Trap 3/4 inch connector Figure 80: Flexible Drain Hose Connection. Flexible Drain Hose Ducted indoor units and vertical / horizontal air handler units include a factoryprovided flexible drain hose (with one or two clamps) to connect the indoor unit to the drain piping / drain piping system. 124 Guidelines Clamp the Flexible Drain Hose Connection

125 Application Guidelines General Drain Piping Information Drain Piping Drain piping must have down slope (1/50 to 1/100). Any holes through the ceilings, walls, etc., must be large enough to accommodate the drain piping and insulation. To prevent reversal flow, do not provide up and down slope. For High Static, Low Static, and Built In Ducted Units, the outside diameter of the drain connection on the indoor unit is 1-1/4 inches. For Vertical / Horizontal Air Handling Units, use PVC with a 3/4 male pipe thread fitting for the condensate pan. For High Static, Low Static, and Built In Ducted Units, the drain piping material is polyvinyl chloride pipe (1 inch). Figure 81: Drain Piping Slope. Pipe clamp Indoor unit Maintenance drain port Upward routing not allowed Drain Leak Test A leak test should be performed 24 hours after the drainage system has been installed. Figure 82: Properly Insulating the Drainage Piping. Drain Pipe Insulation To prevent condensate from forming on the drain piping, fieldsupplied 5/16 inch thick polyethylene insulation should be properly installed. Ensure the indoor unit, refrigerant piping, drain piping, and power wiring / communication cables are properly supported with anchor bolts and clamp hangers positioned at 3.3 to 4.9 foot intervals. Common Indoor Unit Drainage System It is usual work practice to connect individual indoor unit drain pipes to one common indoor unit drainage system. The diameter of the common vertical drain pipe should be as large as necessary. The diameter of the horizontal pipe should be the same or larger than the vertical drain pipe. To avoid property damage in the event of the primary drain becoming clogged, and to optimize drain system performance, it may be prudent to install a secondary drain line. Design the drain system to plan for winter operation (condensate line may freeze up if condensate does not properly drain away). Drain all generated condensate from the external condensate pan to an appropriate area. Install a trap in the condensate lines as near to the indoor unit coil as possible. To prevent overflow, the outlet of each trap should be positioned below its connection to the condensate pan. All traps should be primed, insulated, and leak tested. Insulation Not Required Insulation Requir ed Figure 83: Example of a Common Indoor Unit Drainage System. 45 to 60 Angle 45 to 60 Angle 45 to 60 Angle 1/50 to 1/100 Slope 45 to 60 angle for protection against overflow Common horizontal drain pipe 27-1/2 in. (Maximum pump lift distance [depends on indoor unit type]). Properly Fitting Insulation Position the vent down to prevent debris from entering the system Common vertical drain pipe Include trap at the end. It is recommended that a dedicated drain pipe be installed for the air conditioning system. If the indoor unit drainage system is shared with a rainwater drain, waste water, or any other type of building drain system, back flow, leaks, ice may form, or noxious odors may infiltrate the air conditioning system. Install a trap if the drain access to the outside faces an undesirable location (i.e., sewer), otherwise, noxious odors may infiltrate the air conditioning system. Application Guidelines Guidelines 125

126 Application Guidelines Wiring Guidelines MULTI V Ducted Indoor Unit Engineering Manual General Power Wiring / Communications Cable Guidelines Follow manufacturer s circuit diagrams displayed on the inside of the control box cover. Have a separate power supply for the indoor units. Provide a circuit breaker switch between the power source and the indoor unit. Confirm power source specifications. Confirm that the electrical capacity is sufficient. Starting current must be maintained ±10 percent of the rated current marked on the name plate. Confirm wiring / cable thickness specifications: Power wiring is field supplied. Wire size is selected based on the larger MCA value, and must comply with the applicable local and national codes. Communication cable must be a minimum of 18 AWG, two-conductor, stranded, shielded, and must comply with the 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. It is recommended that a circuit breaker is installed, especially if conditions could become wet or moist. Include a disconnect in the power wiring system. Add an air gap contact separation of at least 1/8 inch in each active (phase) conductor. Any openings where the field wiring enters the cabinet must be completely sealed. Terminal screws may loosen during transport. Properly tighten the terminal connections during installation or risk electric shock, physical injury or death. Loose wiring may cause the wires to burnout or the terminal to overheat and catch fire. There is a risk of electric shock, physical injury or death. Terminal screws may loosen during transport. Properly tighten the terminal connections during installation or risk equipment malfunction or property damage. Loose wiring may cause unit malfunction, the wires to burnout or the terminal to overheat and catch fire. There is a risk of equipment malfunction or property damage. A voltage drop may cause the following problems: Magnetic switch vibration, fuse breaks, or disturbance to the normal function of an overload protection device. Compressor will not receive the proper starting current. Power Wiring and Communications Cable Connections 1. Insert the power wiring / communications cable from the outdoor unit or heat recovery unit (Heat Recovery systems only) using the designated path in the indoor unit. Figure 84: Location of Power Wiring / Communications Cable Terminals in the High Static and Low Static Ducted Indoor Units. BG, BR, B8 Frame Terminals 2. Connect each wire to its appropriate terminal on the indoor unit control board. Verify that the color and terminal numbers from the outdoor unit or heat recovery unit (Heat Recovery systems only) wiring match the color and terminal numbers on the indoor unit. L(L1) N(L2) Power Supply High Voltage (208/230V) A B Communications Conduit Lock nut Conduit mounting plate 3. Secure the power wiring / communications cable. 126 Guidelines

127 Application Guidelines Wiring Guidelines Figure 85: Location of Power Wiring / Communications Cable Terminals in the Built In Ducted Indoor Unit. B3, B4 Frame Terminals Lock nut L(L1) N(L2) YL RD BK 3(A) 4(B) Conduit Power Supply High Voltage (208/230V) Communications Figure 86: Location of Power Wiring / Communications Cable Terminals in the Vertical / Horizontal Air Handler Unit. Indoor Unit Terminal Block Power Wiring Through Optional Access Hole Figure 87: Terminal Block in the High Static (BG, BR, B8 Frame) Ducted Indoor Unit. Communication Cable Through Optional Access Hole INTERNET GND 12V L(L1) N(L2) YL RD BK A B B A - - B A SODU IDU Outdoor Unit Terminal Block DRY1 DRY2 Application Guidelines Power Input V / 60 Hz / 1 Phase Ground Wired Controller Figure 88: Terminal Block in the Low Static (L1, L2, L2 Frame) Ducted Indoor Unit. Outdoor Unit Terminal Block Indoor Unit Terminal Block SODU IDU INTERNET DRY1 DRY2 GND 12V L(L1) N(L2) 3(A) 4(B) B A - - B A Ground Power Input V / 60 Hz / 1 Phase Guidelines 127