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GUIDELINES | 55

Application Guidelines

Due to our policy of continuous product innovation, some specifications may change without notification.

APPLICATION GUIDELINES

Selecting the Best Location / General Mounting - Floor Standing

Figure 33: Selecting the Best Location / Minimum Clearance Require-

ments — Ceiling Suspended Indoor Units.

Figure 34: Selecting the Best Location / Minimum Clearance Require-

ments — Convertible Surface Indoor Units.

More than

27-9/16 inches

More than

11-13/16 inches

More than

27-9/16 inches

More than

7-7/8 inches

More than

2 inches

More than

7-7/8 inches

More than

7-7/8 inches

More than 2 inches

More than

7-7/8 inches

Ceiling Mounting Installation

Wall Mounting Installation

General Mounting - Floor Standing Indoor Units

Figure 35: Bolt Pitch for Floor Standing Indoor Units.

• The unit requires a minimum clearance of 3-15/16 below the unit for air intake.

• Verify that the floor standing indoor unit is level so that drainage flows smoothly. If there is an incline, water may leak.

• Depending on the shape and type of the wall surface, the indoor unit operating sound may be louder.

7-13/16

7-5/8

Unit: Inch

Table 35: Location of the Wall Bolts for Floor Standing Indoor Units.

Indoor Unit

A (Inch)

Floor Standing Cased and Uncased CEA / CEU Frames

33-3/4

Floor Standing Cased and Uncased CFA / CFU Frames

44-3/4

1. To provide stabilization, floor standing indoor units need to be

secured to a wall. Ensure the wall is strong enough to bear the

weight of the unit. If necessary, reinforce the wall before installing

the unit.

2. Mark the appropriate location on the wall for the holes, then drill

the holes.

3. Apply the installation mount and install the Floor Standing indoor

unit.

Summary of Contents for ARNU073CEA4

Page 1: ...8_17 FLOOR STANDING CEILING SUSPENDED AND CONVERTIBLE SURFACE MOUNTED INDOOR UNIT ENGINEERING MANUAL Floor Standing 7 500 to 24 200 Btu h Convertible Surface Mounted 9 600 and 12 300 Btu h Ceiling Suspended 19 100 and 24 200 Btu h Cased Uncased ...

Page 2: ...l as all reports illustrations data information and other materials are the property of LG Electronics U S A Inc and are disclosed by LG Electronics U S A Inc only in confidence This document is for design purposes only A summary list of safety precautions is on page 3 For more technical materials such as submittals catalogs installation owner s and service manuals visit www lghvac com ...

Page 3: ...y Tables 38 40 Convertible Surface Mounted Indoor Units 41 52 Mechanical Specifications 42 General Data 43 Electrical Data 43 External Dimensions 44 Electrical Wiring Diagram 45 Refrigerant Flow Diagram 47 Acoustic Data 48 Air Velocity Temperature Distribution 49 50 Capacity Tables 51 52 Application Guidelines 53 60 Selecting the Best Location 54 55 General Mounting 55 57 General Drain Piping Info...

Page 4: ... Indoor Unit Refrigerant R410A 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 NJ Vertical Horizontal Air Handling Unit NK Vertical Horizontal Air Handling Unit SB Wall Mounted SC Wall Moun...

Page 5: ... LG LATS program with Revit software It permits engineers to layout and validate Multi V VRF systems directly into Revit drawings AutoCAD and Revit are both registered marks of Autodesk Inc Features All LG product design criteria have been loaded into the program making LATS simple to use double click or drag and drop the com ponent choices Build systems in Tree Mode where the refrigerant system c...

Page 6: ... of room s Outdoor unit cannot be placed where originally intended Structural elements prevent routing the piping as planned Air conditioning system conflicts with other building systems plumbing gas lines etc The contractor must mark any deviation from the design on the Shop Drawing including as built straight lines and elbows This Mark Up drawing should be returned to the design engineer or Rep ...

Page 7: ...e 10 Electrical Data on page 12 External Dimensions on page 13 Electrical Wiring Diagram on page 15 Refrigerant Flow Diagrams on page 17 External Static Pressure and Air Flow on page 18 Acoustic Data on page 19 Air Velocity Temperature Distribution on page 22 Capacity Tables on page 25 ...

Page 8: ...enuating rubber grommets The fan impeller is statically and dynamically balanced The fan speed is controlled using a microprocessor based direct digital control algo rithm 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 hi...

Page 9: ...e 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 local or central controller displayed diagnostic codes are specific alpha numeric and provide the servic...

Page 10: ...0 0 0 0 0 0 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 1 1 1 1 1 1 Table 1 Cased Floor Standing CEA CFA Indoor Unit General Data EEV Electronic Expansion Valve Power wiring is field supplied and must comply with the applicable local and national codes This...

Page 11: ...e 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 1 1 1 1 1 1 Table 2 Uncased Floor Standing CEU CFU Indoor Unit General Data 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 ra...

Page 12: ... CEA CFA Cased Units ARNU073CEA4 208 230 1 0 15 0 76 60 208 230 1 85 85 ARNU093CEA4 1 0 0 76 85 85 ARNU123CEA4 1 0 0 76 85 85 ARNU153CEA4 1 0 0 76 85 85 ARNU183CFA4 1 2 15 0 97 115 115 ARNU243CFA4 1 2 0 97 115 115 CEU CFU Uncased Units ARNU073CEU4 208 230 1 0 15 0 76 60 208 230 1 85 85 ARNU093CEU4 1 0 0 76 85 85 ARNU123CEU4 1 0 0 76 85 85 ARNU153CEU4 1 0 0 76 85 85 ARNU183CFU4 1 2 15 0 97 115 115 ...

Page 13: ...STANDING External Dimensions Figure 3 ARNU073 153CEA4 ARNU073 153CEU4 Dimensions CEA Cased CEU Uncased Units With Case 42 42 5 13 16 5 13 16 15 16 2 3 4 25 8 Air Supply Air Return Unit inches Note All measurements have a tolerance of 1 4 in Without Case 38 1 2 31 5 16 25 3 16 1 2 3 4 2 1 2 7 15 16 6 5 16 1 2 W Model ARNU073CEA4 ARNU093CEA4 ARNU123CEA4 ARNU153CEA4 H 42 25 8 ARNU073CEU4 ARNU093CEU4 ...

Page 14: ...demark of LG Corp FLOOR STANDING External Dimensions CFA Cased CFU Uncased Units Figure 4 ARNU183 243CFA4 ARNU183 243CFU4 Dimensions 8 52 15 16 25 2 3 4 5 13 16 41 1 4 1 15 16 5 13 16 7 1 2 6 5 16 49 7 16 43 1 4 42 3 16 4 5 16 1 3 16 3 3 16 5 11 16 2 3 4 13 16 25 5 32 8 With Case Unit inches Note All measurements have a tolerance of 1 4 in Without Case Air Supply Air Return 1 2 W Model ARNU183CFA4...

Page 15: ...y change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp FLOOR STANDING Electrical Wiring Diagram CEA and CFA Cased CEU and CFU Uncased Units Figure 5 ARNU073 153CEA4 ARNU183 243CFA4 ARNU073 153CEU4 ARNU183 243CFU4 Wiring Diagram ...

Page 16: ... is Auto if there is no setting 2 Auto For Dry Contact it is always Auto mode SW5 CONTINUOUS FAN Off On Selects continuous fan for floor standing indoor units 1 On Indoor unit fan will always operate at a set fan speed except when the system is off or the outdoor unit is in defrost mode when the oudoor unit is in defrost mode the fan will operate at super low fan speed 2 Off Indoor unit fan speed ...

Page 17: ...igerant Pipe Connection Port Diameters Thermistor Description TH1 Return air thermistor TH2 Pipe in thermistor TH3 Pipe out thermistor Table 7 CEA and CFA Cased CEU and CFU Uncased Indoor Unit Thermistors CEA and CFA Cased CEU and CFU Uncased Units Heat Exchanger Sirocco Fan TH3 TH1 TH2 lndoor unit EEV Heating Cooling Filter Filter Model Liquid inch Vapor inch CEA CFA Cased Units ARNU073CEA4 1 4 F...

Page 18: ... 236 155 90 294 256 181 95 320 267 208 100 335 281 245 105 358 315 268 110 377 337 298 115 396 359 323 120 418 378 349 130 459 420 397 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 ...

Page 19: ...NU073CEU4 35 33 31 ARNU093CEU4 36 34 32 ARNU123CEU4 37 35 33 ARNU153CEU4 38 37 35 ARNU183CFU4 40 37 34 ARNU243CFU4 43 40 37 Table 10 Floor Standing Sound Indoor Unit Pressure Levels Figure 8 ARNU073CEA4 CEU4 ARNU093CEA4 CEU4 and ARNU123CEA4 CEU4 Sound Pressure Level Diagrams 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...

Page 20: ...erating 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 m2 Model Sound Power Levels dB A CEA CFA Cased Units ARNU073CEA4 54...

Page 21: ...registered trademark of LG Corp Figure 10 ARNU073CEA4 CEU4 ARNU093CEA4 CEU4 and ARNU123CEA4 CEU4 Sound Power Level Diagrams FLOOR STANDING Acoustic Data Sound Power Levels Figure 11 ARNU153CEA4 CEU4 ARNU183CFA4 CFU4 and ARNU243CFA4 CFU4 Sound Pressure Level Diagrams ARNU073CEA4 ARNU073CEU4 ARNU093CEA4 ARNU093CEU4 ARNU123CEA4 ARNU123CEU4 ARNU153CEA4 ARNU153CEU4 ARNU183CFA4 ARNU183CFU4 ARNU243CFA4 A...

Page 22: ...9 ft 6 6 ft 3 3 ft 8 9 ft 6 6 ft 3 3 ft Air velocity ft s Temperature F 0 5 0 5 0 5 0 5 1 1 1 1 5 2 3 5 16 17 1 8 18 19 19 2 0 20 2 0 21 21 21 21 21 2 2 22 22 2 2 22 2 2 0 0 0 8 9 ft 6 6 ft 3 3 ft 8 9 ft 6 6 ft 3 3 ft Air velocity ft s Temperature F Cooling Discharge angle 45 Heating Discharge angle 60 2 4 24 24 2 4 24 24 2 6 26 26 26 26 8 3 83 83 83 8 2 82 80 8 0 8 4 8 4 8 6 0 3 0 2 3 5 3 5 3 5 1...

Page 23: ...3 5 1 1 1 5 1 5 1 5 2 5 0 0 0 0 8 9 ft 6 6 ft 3 3 ft 8 9 ft 6 6 ft 3 3 ft Air velocity ft s Temperature F 1 5 16 17 1 8 18 1 9 19 2 0 20 20 2 1 21 21 21 21 21 0 5 0 5 0 5 0 5 1 1 1 1 1 5 1 5 1 5 2 2 2 2 5 3 3 5 4 0 0 0 0 8 9 ft 6 6 ft 3 3 ft 8 9 ft 6 6 ft 3 3 ft Air velocity ft s Temperature F Cooling Discharge angle 45 Heating Discharge angle 60 2 8 28 28 28 28 3 0 30 3 0 30 32 32 3 2 34 34 3 4 3...

Page 24: ...2 32 32 34 34 3 6 3 6 3 8 3 8 4 0 4 2 0 5 0 5 0 5 0 5 1 0 1 0 1 0 2 0 0 0 0 0 8 9 ft 6 6 ft 3 3 ft 8 9 ft 6 6 ft 3 3 ft Air velocity ft s Temperature F 1 8 18 2 0 20 20 2 0 20 20 1 0 1 0 1 0 1 0 2 0 2 0 3 0 0 0 0 0 8 9 ft 6 6 ft 3 3 ft 8 9 ft 6 6 ft 3 3 ft Air velocity ft s Temperature F Cooling Discharge angle 45 Heating Discharge angle 60 0 0 5 0 5 0 5 0 5 1 0 1 0 1 0 2 0 2 0 2 0 3 0 4 0 3 0 30 ...

Page 25: ... 50 6 3 5 3 7 7 6 1 8 6 6 5 9 6 6 9 10 8 7 4 11 4 7 4 12 4 7 3 55 6 3 5 3 7 7 6 1 8 6 6 5 9 6 6 9 10 8 7 4 11 4 7 4 12 4 7 4 60 6 3 5 3 7 7 6 1 8 6 6 5 9 6 6 9 10 8 7 4 11 4 7 4 12 3 7 3 65 6 3 5 3 7 7 6 1 8 6 6 5 9 6 6 9 10 8 7 4 11 4 7 4 12 1 7 2 70 6 3 5 3 7 7 6 1 8 6 6 5 9 6 6 9 10 8 7 4 11 4 7 4 11 9 7 1 75 6 3 5 3 7 7 6 1 8 6 6 5 9 6 6 9 10 8 7 4 11 4 7 4 11 6 6 9 80 6 3 5 3 7 7 6 1 8 6 6 5 ...

Page 26: ...12 6 10 4 15 3 12 0 17 2 12 8 19 1 13 6 21 4 14 6 22 7 14 4 24 6 14 4 55 12 6 10 4 15 3 12 0 17 2 12 8 19 1 13 6 21 4 14 6 22 7 14 4 24 6 14 4 60 12 6 10 4 15 3 12 0 17 2 12 8 19 1 13 6 21 4 14 6 22 7 14 4 24 4 14 3 65 12 6 10 4 15 3 12 0 17 2 12 8 19 1 13 6 21 4 14 6 22 7 14 4 24 1 14 1 70 12 6 10 4 15 3 12 0 17 2 12 8 19 1 13 6 21 4 14 6 22 7 14 4 23 7 13 9 75 12 6 10 4 15 3 12 0 17 2 12 8 19 1 ...

Page 27: ...7 2 0 0 4 7 5 7 5 7 5 7 5 7 5 7 4 7 4 7 4 5 0 4 5 8 5 8 4 8 3 8 3 8 3 8 3 8 3 8 3 10 0 9 0 8 8 8 8 8 8 8 7 8 7 8 7 8 7 8 7 15 0 14 0 9 4 9 4 9 4 9 4 9 4 9 4 9 3 9 2 20 0 19 0 9 9 9 9 9 9 9 9 9 7 9 7 9 5 9 4 25 0 23 0 10 4 10 4 10 4 10 4 10 4 10 1 10 0 9 9 30 0 28 0 10 6 10 6 10 6 10 6 10 6 10 4 10 0 9 7 35 0 32 0 10 9 10 9 10 9 10 9 10 8 10 6 10 0 9 5 40 0 36 0 11 3 11 3 11 3 11 3 10 9 10 6 10 0 9...

Page 28: ...0 56 0 20 9 19 8 18 8 18 0 17 1 16 6 15 7 14 9 ARNU183CFA4 ARNU183CFU4 19 1 4 4 4 14 4 14 4 14 4 14 4 14 2 14 2 14 2 14 2 0 0 4 14 8 14 8 14 8 14 8 14 8 14 6 14 6 14 6 5 0 4 5 16 8 16 6 16 3 16 3 16 3 16 3 16 3 16 3 10 0 9 0 17 4 17 4 17 4 17 2 17 2 17 2 17 2 17 2 15 0 14 0 18 5 18 5 18 5 18 5 18 5 18 5 18 3 18 1 20 0 19 0 19 6 19 6 19 6 19 6 19 1 19 1 18 8 18 5 25 0 23 0 20 4 20 4 20 4 20 4 20 4 ...

Page 29: ... General Data on page 31 Electrical Data on page 31 External Dimensions on page 32 Electrical Wiring Diagram on page 33 Refrigerant Flow Diagram on page 35 Acoustic Data on page 36 Air Velocity Temperature Distribution on page 37 Capacity Tables on page 38 ...

Page 30: ...dels of the optional wall mounted local or central controller The field supplied commu nication 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 self diag nostics auto restart following power restoration test ru...

Page 31: ...ence between outdoor and indoor units All capacities are net with a combination ratio between 95 105 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 an...

Page 32: ...e to our policy of continuous product innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp External Dimensions CEILING SUSPENDED Figure 18 ARNU183VJA2 and ARNU243VJA2 Dimensions ...

Page 33: ...may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp CEILING SUSPENDED Electrical Wiring Diagram Figure 19 ARNU183VJA2 and ARNU243VJA2 Wiring Diagram CN FLOAT Float switch is field supplied CN FLOAT has factory installed jumper ...

Page 34: ...n PCB connection CN DISPLAY Display Display of indoor status CN CC Dry contact Dry Contact connection CN REMO Wired remote controller Wired remote control connection CN ROOM Room sensor Room air thermistor CN PIPE OUT Discharge pipe sensor Pipe out thermistor CN PIPE IN Suction pipe sensor Pipe in thermistor CN COM Communication Communication between indoor and outdoor CEILING SUSPENDED Electrical...

Page 35: ...frigerant Flow Diagram Figure 20 Ceiling Suspended Indoor Unit Refrigerant Flow Diagram Model Liquid inch Gas inch ARNU183VJA2 1 4 1 2 ARNU243VJA2 3 8 5 8 Table 21 Ceiling Suspended Indoor Unit Thermistors Table 20 Ceiling Suspended Indoor Unit Refrigerant Pipe Connection Port Diameters Thermistor Description TH1 Return air thermistor TH2 Pipe in thermistor TH3 Pipe out thermistor Heat Exchanger S...

Page 36: ...NC 35 NC 40 NC 45 NC 50 NC 55 NC 60 NC 65 Approximate Hearing Threshold Octave Band Sound Pressure Level dB re 20µPa 10 20 30 40 50 60 70 80 63 125 250 500 1000 2000 4000 8000 Octave Band Center Frequency Hz NC 15 NC 20 NC 25 NC 30 NC 35 NC 40 NC 45 NC 50 NC 55 NC 60 NC 65 Approximate Hearing Threshold ARNU183VJA2 ARNU243VJA2 3 3 ft Microphone 3 3 ft Figure 22 ARNU183VJA2 and ARNU243VJA2 Sound Pre...

Page 37: ...F 3 3 6 6 6 6 14 7 16 4 6 6 6 6 6 6 2 0 3 3 3 3 3 3 3 3 3 3 3 3 3 3 1 9 6 3 3 89 6 96 8 9 6 8 8 9 6 96 8 10 0 4 100 4 93 2 96 8 96 8 9 6 8 93 2 100 4 100 4 104 104 104 107 6 107 6 Air velocity ft s Temperature F 1 5 1 5 1 5 1 5 1 5 1 5 4 0 1 5 1 5 3 0 3 5 3 0 3 0 3 0 1 5 28 0 3 0 0 36 0 36 0 36 0 3 6 0 3 4 0 3 2 0 3 6 0 38 0 38 0 34 0 40 0 40 0 42 0 42 0 40 0 Cooling Discharge angle 50 Heating Dis...

Page 38: ...22 5 13 7 85 12 6 10 6 15 3 12 1 17 2 13 0 19 1 13 8 21 2 14 6 21 4 13 9 21 8 13 2 90 12 6 10 6 15 3 12 1 17 2 13 0 19 1 13 8 20 8 14 4 21 0 13 7 21 4 13 0 95 12 6 10 6 15 3 12 1 17 2 13 0 19 1 13 8 20 4 14 3 20 8 13 6 21 2 12 9 100 12 6 10 6 15 3 12 1 17 2 13 0 19 1 13 8 20 1 14 1 20 4 13 5 20 8 12 8 105 12 6 10 6 14 5 11 5 16 4 12 4 18 3 13 2 18 7 13 2 19 7 13 0 20 1 12 5 110 12 2 10 2 13 8 10 9...

Page 39: ... 19 2 35 0 32 0 21 5 21 5 21 5 21 5 21 3 20 9 19 8 18 8 40 0 36 0 22 4 22 4 22 4 22 4 21 5 20 9 19 8 18 8 45 0 41 0 23 2 23 2 23 2 22 6 21 5 20 9 19 8 18 8 47 0 43 0 24 1 23 9 23 7 22 6 21 5 20 9 19 8 18 8 50 0 46 0 25 8 24 7 23 7 22 6 21 5 20 9 19 8 18 8 55 0 51 0 26 3 24 9 23 7 22 6 21 5 20 9 19 8 18 8 60 0 56 0 26 3 24 9 23 7 22 6 21 5 20 9 19 8 18 8 ARNU243VJA2 24 2 4 4 4 18 3 18 3 18 3 18 3 1...

Page 40: ...nvertible Indoor Unit Engineering Manual Due to our policy of continuous product innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp ...

Page 41: ...e 42 General Data on page 43 Electrical Data on page 43 External Dimensions on page 44 Electrical Wiring Diagram on page 45 Refrigerant Flow Diagrams on page 47 Acoustic Data on page 48 Air Velocity Temperature Distribution on page 49 Capacity Tables on page 51 ...

Page 42: ...e 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 commu nication 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...

Page 43: ...t level difference between outdoor and indoor units All capacities are net with a combination ratio between 95 105 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 ...

Page 44: ... policy of continuous product innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp External Dimensions Figure 25 ARNU093VEA2 and ARNU123VEA2 Dimensions CONVERTIBLE SURFACE MOUNTED ...

Page 45: ...duct innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp Electrical Wiring Diagram Figure 26 ARNU093VEA2 and ARNU123VEA2 Wiring Diagram CONVERTIBLE SURFACE MOUNTED ...

Page 46: ...Dry contact Dry Contact connection CN REMO Wired remote controller Wired remote control connection CN ROOM Room sensor Room air thermistor CN PIPE OUT Discharge pipe sensor Pipe out thermistor CN PIPE IN Suction pipe sensor Pipe in thermistor CN COM Communication Communication between indoor and outdoor Electrical Wiring Diagram CONVERTIBLE SURFACE MOUNTED For Gen 4 Multi V convertible surface ind...

Page 47: ...Convertible Surface Mounted Indoor Unit Refrigerant Flow Diagram Model Liquid inch Gas inch ARNU093VEA2 1 4 1 2 ARNU123VEA2 1 4 1 2 Table 30 Convertible Surface Mounted Indoor Unit Thermistors Table 29 Convertible Surface Mounted Indoor Unit Refrigerant Pipe Connection Port Diameters Thermistor Description TH1 Return air thermistor TH2 Pipe in thermistor TH3 Pipe out thermistor CONVERTIBLE SURFACE...

Page 48: ...d pressure levels are measured in dB A with a tolerance of 3 Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745 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 CONVERTIBLE SURFACE MOUNTED 3 3 ft Microphone 3 ...

Page 49: ... 93 2 93 2 95 1 9 5 1 35 1 95 1 95 1 100 4 3 6 0 10 0 4 1 0 0 4 107 6 1 0 4 95 89 6 9 6 8 9 6 8 1 6 1 6 1 3 3 3 1 3 0 4 1 6 3 3 1 6 3 3 1 6 1 6 1 6 6 6 1 3 1 6 3 3 3 3 3 3 4 9 Air velocity ft s Temperature F Air velocity ft s Temperature C 0 5 0 5 0 5 0 1 0 5 0 5 0 5 1 0 0 5 1 6 1 6 1 6 3 3 1 6 1 6 1 6 3 3 1 6 28 0 30 0 30 0 34 0 34 0 30 0 28 0 32 0 32 0 32 0 3 2 0 3 2 5 32 5 38 0 42 0 44 0 82 4 8...

Page 50: ...4 0 36 0 38 0 36 0 38 0 3 8 0 3 5 4 36 0 42 0 40 0 4 2 0 4 2 0 93 2 9 5 7 9 5 7 95 7 93 2 96 8 95 7 95 7 96 8 93 2 96 8 10 0 4 96 8 100 4 1 0 0 4 9 5 7 96 8 107 6 10 4 1 0 7 6 1 0 7 6 1 0 0 5 1 0 0 5 1 0 1 5 0 5 0 5 0 5 0 5 0 5 0 5 1 0 1 5 1 5 1 5 1 5 1 5 2 5 1 0 3 3 1 6 3 3 1 6 3 3 4 9 1 6 1 6 1 6 1 6 1 6 1 6 3 3 4 9 4 9 4 9 4 9 4 9 8 2 3 3 Air velocity ft s 100 4 Temperature F 85 3 85 3 91 8 91 ...

Page 51: ... 7 2 11 3 6 8 85 6 3 5 2 7 7 6 0 8 6 6 4 9 6 6 8 10 7 7 3 10 8 6 9 10 9 6 5 90 6 3 5 2 7 7 6 0 8 6 6 4 9 6 6 8 10 5 7 1 10 6 6 8 10 8 6 4 95 6 3 5 2 7 7 6 0 8 6 6 4 9 6 6 8 10 3 7 1 10 5 6 7 10 7 6 4 100 6 3 5 2 7 7 6 0 8 6 6 4 9 6 6 8 10 1 7 0 10 3 6 7 10 5 6 3 105 6 3 5 2 7 3 5 7 8 3 6 1 9 2 6 5 9 4 6 5 9 9 6 5 10 1 6 2 110 6 1 5 1 6 9 5 4 7 7 5 7 8 6 6 1 8 8 6 1 9 4 6 1 9 8 6 0 ARNU123VEA2 12 3...

Page 52: ... 10 9 10 9 10 9 10 9 10 8 10 6 10 0 9 5 40 0 36 0 11 3 11 3 11 3 11 3 10 9 10 6 10 0 9 5 45 0 41 0 11 8 11 8 11 8 11 4 10 9 10 6 10 0 9 5 47 0 43 0 12 2 12 1 12 0 11 4 10 9 10 6 10 0 9 5 50 0 46 0 13 1 12 5 12 0 11 4 10 9 10 6 10 0 9 5 55 0 51 0 13 3 12 6 12 0 11 4 10 9 10 6 10 0 9 5 60 0 56 0 13 3 12 6 12 0 11 4 10 9 10 6 10 0 9 5 ARNU123VEA2 12 3 4 4 4 9 1 9 1 9 1 9 1 9 0 9 0 9 0 9 0 0 0 4 9 4 9...

Page 53: ...or Units on page 55 General Ceiling Mounting Ceiling Suspended and Convertible Surface on page 56 General Wall Mounting Convertible Surface Indoor Units on page 57 General Drain Piping Information on page 57 Wiring Guidelines on page 59 Wired Remote Controller Location on page 60 Acronyms on page 61 ...

Page 54: ...er efficiency or the drain to malfunction If this is a potential problem install a ventilation fan large enough to vent out these materials 3 4 or more 5 7 8 or more 3 15 16 or more 6 7 8 or more Front Base Supply air direction Return air direction 39 3 8 or more Window B Maintenance area Window A 25 3 4 2 3 16 or more Cased Uncased Table 34 Floor Standing Minimum Maintenance Requirements Indoor U...

Page 55: ...allation General Mounting Floor Standing Indoor Units Figure 35 Bolt Pitch for Floor Standing Indoor Units The unit requires a minimum clearance of 3 15 16 below the unit for air intake Verify that the floor standing indoor unit is level so that drainage flows smoothly If there is an incline water may leak Depending on the shape and type of the wall surface the indoor unit operating sound may be l...

Page 56: ...s than or equal to 1 or between 3 8 3 4 inch in drain direction General Ceiling Mounting Ceiling Suspended and Convertible Surface Indoor Units Figure 36 Ceiling Mounting for Ceiling Suspended Indoor Units Do not damage power wiring during installation There is risk of elec tric shock which may result in physical injury or death Do not damage power wiring during installation There is a risk of equ...

Page 57: ...ing or a common indoor unit drainage piping system can be installed When the bottom surface of the indoor unit is at an elevation below the receiving build ing drain line connection install an inverted trap at the top of the condensate pump discharge riser before connection to the building drain pipe When the receiving drain line is mounted horizontal connect the inverted trap to the top half of t...

Page 58: ... a secondary drain line Design the drain system to plan for winter operation condensate line may freeze up if conden sate 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 conn...

Page 59: ...et must be completely sealed 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 mal function or property damage A voltage drop may cause the following problems Mag...

Page 60: ... Communications Cable Terminals in Convertible Surface Indoor Units Figure 49 Simplified View of Indoor Unit Terminal Connections Floor Standing Figure 50 Simplified View of Indoor Unit Terminal Connections Ceiling Suspended Figure 51 Simplified View of Indoor Unit Terminal Connections Convertible Surface Wired Controller Placement Floor standing ceiling suspended and convertible surface indoor un...

Page 61: ...tally Controlled MCA Minimum Circuit Ampacity BTL BACnet Testing Laboratories mm Millimeter Btu h British Thermal Unit per Hour MOP Maximum Overcurrent Protection CAA Clean Air Act OD Outside Diameter CFM Cubic Feet per Minute ODU Outdoor Unit CFR Code of Federal Regulations PI Power Input DB Dry Bulb PTAC Packaged Terminal Air Conditioner dB A Decibels with A frequency weighting SHC Sensible Heat...

Page 62: ...oorSuspendCovert_IndoorUnits_05_16 EM_MultiV_FloorSuspendCovert_IndoorUnits_4_15 LG Electronics Commercial Products Support 1 888 865 3026 USA Follow the prompts for commercial A C products LG Electronics U S A Inc Commercial Air Conditioning Division 4300 North Point Parkway Alpharetta Georgia 30022 www lg vrf com ...

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