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LG Multi V ARNU053TRD4 Installation Manual Download Page 42

42

MUL

TI V Ceiling Cassette Indoor Units

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.

Figure 36: Properly Installing Decorative Cover Against the Two-Way Cassette Indoor Unit Frame.

Cassette

Frame

Decorative Panel

Ceiling

Board

Ceiling

Board

 

 

Correct Installation

Incorrect Installation

Cassette

Frame

Air

Air

Decorative Panel 

against Cassette 

Frame with No Gap

Cool Air 

Leaking

Through 

Gap

Cass

ram

cora

r 

ng

ugh 

Deco

Air

Figure 35: Two-Way Cassette Decorative Cover Installation.

Cassette Frame

Decorative Cover

Control Box Cover

Piping Side

Louver Motor

Display

Lead Wire for

Louver Motor

and Control Panel

Decorative Cover

Installation Screws 

Decorative Cover

Installation Screws 

Two-Way Decorative Cover Installation

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1.  Install the two decorative cover attaching screws (M5) on the cassette frame (factory supplied). Tighten only about 3/8 inch.
2.  Remove the air inlet grille from the decorative cover. (Remove the hook for the air inlet grille cord.)
3.  Hook the decorative cover key hole on the installed screws, and slide the panel so that the screws lock into the key hole edge.
4.  Tighten completely the two initially installed screws, and then install the two additional screws.
5.  Connect the louver motor connector and display connector.
6.  After tightening these screws, install the air inlet grille (including the air filter).

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INSTALL DECORATIVE COVER

Summary of Contents for Multi V ARNU053TRD4

Page 1: ...4 ARNU183TTD4 ARNU243TTD4 Four Way 2 x 2 Models ARNU053TRD4 ARNU073TRD4 ARNU093TRD4 ARNU123TRD4 ARNU153TQD4 ARNU183TQD4 Two Way Models ARNU183TSA4 ARNU243TSA4 Four Way 3 x 3 Models ARNU073TAA4 ARNU093TAA4 ARNU123TAA4 ARNU153TAA4 ARNU183TAA4 ARNU243TAA4 ARNU283TAA4 ARNU363TAA4 ARNU423TAA4 ARNU483TAA4 ...

Page 2: ...e reference Content familiarity is required for proper installation The instructions included in this manual must be followed to prevent product malfunction property damage injury or death to the user or other people Incorrect operation due to ignoring any instructions will cause harm or damage The level of seriousness is classified by the symbols described by the summary list of safety precaution...

Page 3: ... DQG QVSHFW 29 QVWDOO DVVHWWH UDPH 30 33 Refrigerant Piping 33 38 3LSLQJ 0DWHULDOV DQG DQGOLQJ 33 3LSH 6XSSRUWV 34 3LSLQJ 3UHSDUDWLRQ 35 37 3LSH RQQHFWLRQV QVXODWLQJ WKH 5HIULJHUDQW 3LSLQJ 38 General Condensate Piping 39 40 Install Decorative Cover 41 43 Install Branch Duct 44 46 Wiring 47 66 HQHUDO QIRUPDWLRQ 6HSDUDWLQJ LULQJ DQG DEOHV 47 3RZHU LULQJ RPPXQLFDWLRQ DEOH RQQHFWLRQV 48 3RZHU 6XSSO 3R...

Page 4: ...LVN RI SK VLFDO LQMXU RU GHDWK Wear protective gloves when handling equipment 6KDUS HGJHV PD FDXVH SHUVRQDO LQMXU Dispose the packing materials safely 3DFNLQJ PDWHULDOV VXFK DV QDLOV DQG RWKHU PHWDO RU ZRRGHQ SDUWV PD FDXVH SXQFWXUH ZRXQGV RU RWKHU LQMXULHV 7HDU DSDUW DQG WKURZ DZD SODVWLF SDFNDJLQJ EDJV VR WKDW FKLOGUHQ PD QRW SOD ZLWK WKHP DQG ULVN VXIIRFDWLRQ DQG GHDWK R QRW LQVWDOO WKH XQLW LQ...

Page 5: ...ubing remember to allow for pipe expansion PSURSHU SLSLQJ PD FDXVH UHIULJHUDQW OHDNV DQG V VWHP PDOIXQFWLRQ Take appropriate actions at the end of HVAC equipment life to recover recycle reclaim or destroy R410A refrigerant ac cording to applicable U S Environmental Protection Agency EPA rules Periodically check that the outdoor unit is not damaged 7KHUH LV D ULVN RI HTXLSPHQW GDPDJH Install the un...

Page 6: ...DQG IROORZ DOO LQVWUXFWLRQV LQ WKLV PDQXDO FDQ UHVXOW LQ HTXLSPHQW PDOIXQFWLRQ SURSHUW GDPDJH SHUVRQDO LQMXU RU GHDWK Ensure the unit is connected to a dedicated power source that provides adequate power I WKH SRZHU VRXUFH FDSDFLW LV LQDGHTXDWH RU WKH HOHFWULF ZRUN LV QRW SHUIRUPHG SURSHUO LW PD UHVXOW LQ UH HOHFWULF VKRFN SK VLFDO LQMXU RU GHDWK Refer to local state and federal codes and use powe...

Page 7: ...XH WR GXVW RU ZDWHU LQ WKH service panel Periodically verify the equipment mounts have not deterio rated I WKH EDVH FROODSVHV WKH XQLW FRXOG IDOO DQG FDXVH SURSHUW GDPDJH RU SURGXFW IDLOXUH Do not allow water dirt or animals to enter the unit 7KHUH LV ULVN RI XQLW IDLOXUH WARNING Do not allow water dirt or animals to enter the unit 7KHUH LV ULVN RI XQLW IDLOXUH UH HOHFWULF VKRFN SK VLFDO LQMXU RU ...

Page 8: ...ion 4 Fourth TT 1 Way Ceiling Cassette TU 1 Way Ceiling Cassette TS 2 Way Ceiling Cassette TA 4 Way Ceiling Cassette TQ 4 Way Ceiling Cassette TR 4 Way Ceiling Cassette Electrical Ratings 3 208 230V 60Hz 1Phase Nominal Capacity Nominal cooling capacity in Btu h Type U Inverter Heat Pump Family ARN Multi V Indoor Unit Refrigerant R410A 4 Feature A C L R Standard 05 5 500 07 7 500 09 9 600 12 12 300...

Page 9: ...ed construction mechanical electrical and or other disciplines Connecting cable power and control Pipes vapor line and liquid line with insulation 3 8 or 1 2 Threaded hanger rods 3 8 or 1 2 nuts flat washers and lock split washers Insulated drain hose Additional drain hose Level Screwdriver Electrical lineman pliers Electric drill Holesaw Drill Flaring tool set Tubing cutter Tube pipe reamer Torqu...

Page 10: ...rs for Hanging Bracket Eight 8 Paper Pattern for Installation One 1 Table 1 Included Items For Vapor Piping For Liquid Piping INTRODUCTION Table 2 Grille Panel Accessory Table Sold Separately For Cassette Type Description Model No Quantity One Way Grille Kit for 7 to 12 MBh Indoor Units PT UUC1 One 1 Grille Kit for 18 and 24MBh Indoor Units PT UTC Two Way Grille Kit PT USC Four Way 2 x 2 Grille Ki...

Page 11: ...ulti V Cassette Indoor Units INTRODUCTION Unit Model Number Ceiling Cassette One Way ARNU073TUD4 ARNU093TUD4 ARNU123TUD4 ARNU183TTD4 ARNU243TTD4 Ceiling Cassette Two Way ARNU183TSA4 ARNU243TSA4 Ceiling Cassette Four Way 2 x 2 ARNU053TRD4 ARNU073TRD4 ARNU093TRD4 ARNU123TRD4 ARNU153TQD4 ARNU183TQD4 HLOLQJ DVVHWWH RXU D ƍ ƍ ARNU073TAA4 ARNU093TAA4 ARNU123TAA4 ARNU153TAA4 ARNU183TAA4 ARNU243TAA4 ARNU2...

Page 12: ...zone depletion potential ODP is 0 WARNING R QRW SODFH WKH UHIULJHUDQW F OLQGHU LQ GLUHFW VXQOLJKW 5HIULJHUDQW F OLQGHU ZLOO H SORGH FDXVLQJ VHYHUH LQMXU RU GHDWK HFDXVH 5 LV D FRPELQDWLRQ RI 5 DQG 5 WKH UHTXLUHG DGGLWLRQDO UHIULJHUDQW PXVW EH FKDUJHG LQ LWV OLTXLG VWDWH I WKH UHIULJHUDQW LV FKDUJHG LQ LWV JDVHRXV VWDWH LWV FRPSRVLWLRQ FKDQJHV DQG WKH V VWHP ZLOO QRW ZRUN SURSHUO R QRW KHDW SLSLQJ ...

Page 13: ...Controlled Direct Airflow Rate H M L CFM 290 258 226 325 304 290 353 325 290 470 427 385 515 470 406 Piping Liquid Line in O D 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 5 8 Flare Condensate Line in I D 1 1 1 1 1 Table 4 One Way Ceiling Cassette TU and TT Frames Indoor Unit General Data GENERAL DATA 6SHFL FDWLRQV EEV Electronic Expan...

Page 14: ...459 Piping Liquid Line in O D 1 4 Flare 3 8 Flare Vapor Line in O D 1 2 Flare 5 8 Flare Condensate Line in I D 1 1 Table 5 Two Way Ceiling Cassette TS Frames Indoor Unit General Data EEV Electronic Expansion Valve 3RZHU ZLULQJ LV HOG VXSSOLHG DQG PXVW FRPSO ZLWK WKH DSSOLFDEOH ORFDO DQG QDWLRQDO codes See page 18 for detailed electrical data This unit comes with a dry nitrogen charge All capacitie...

Page 15: ...1 1 Motor Drive Brushless Digitally Controlled Direct Airflow Rate H M L CFM 265 247 212 265 247 212 283 265 251 307 283 247 388 353 328 396 388 353 Piping Liquid Line in O D 1 4 Flare 1 4 Flare 1 4 Flare 1 4 Flare 1 4 Flare 1 4 Flare Vapor Line in O D 1 2 Flare 1 2 Flare 1 2 Flare 1 2 Flare 1 2 Flare 1 2 Flare Condensate Line in I D 1 1 1 1 1 1 Table 6 Four Way Ceiling Cassette 2 x 2 TR and TQ Fr...

Page 16: ...is only Do not ground the ODU to IDUs HRUs communication cable at any other point Wiring must comply with all applicable local and national codes Model No ARNU073TAA4 ARNU093TAA4 ARNU123TAA4 ARNU153TAA4 ARNU183TAA4 Cooling Mode Performance Capacity Btu h 7 500 9 600 12 300 15 400 19 100 Max Power Input1 W 79 79 79 79 79 L M H Power Input at Factory Default W 10 9 16 1 23 3 10 9 17 6 24 7 13 3 19 2...

Page 17: ... Do not ground the ODU to IDUs HRUs communication cable at any other point Wiring must comply with all applicable local and national codes Model No ARNU243TAA4 ARNU283TAA4 ARNU363TAA4 ARNU423TAA4 ARNU483TAA4 Cooling Mode Performance Capacity Btu h 24 200 28 000 36 200 42 000 48 100 Max Power Input1 W 199 199 199 199 199 L M HPowerInputatFactoryDefault W 24 7 31 1 40 0 26 1 35 2 45 5 31 1 43 4 64 7...

Page 18: ...1 12 13 ARNU073TRD4 0 25 0 20 30 30 11 12 13 ARNU093TRD4 0 25 0 20 30 30 12 13 14 ARNU123TRD4 0 25 0 20 30 30 13 15 17 ARNU153TQD4 0 25 0 20 30 30 18 21 24 ARNU183TQD4 0 25 0 20 30 30 19 22 25 Four Way Ceiling Cassette 3 x 3 Indoor Units ARNU073TAA4 187 253 2 09 15 1 67 60 208 230 1 79 79 10 9 16 1 23 3 ARNU093TAA4 2 09 1 67 79 79 10 9 17 6 24 7 ARNU123TAA4 2 09 1 67 79 79 13 3 19 2 26 1 ARNU153TA...

Page 19: ...ll rights reserved LG is a registered trademark of LG Corp GENERAL DATA LPHQVLRQV 78 UDPH ZLWK 37 88 ULOOH 43 5 16 19 11 16 1 3 8 34 11 16 Air outlet Hole 6 5 8 4 3 16 8 1 8 10 11 16 3 13 16 5 1 4 2 1 4 17 13 16 1 1 16 12 5 8 39 13 16 3 7 16 33 11 16 Unit inches Note All measurements have a tolerance of 1 4 in 2 3 4Ø 1 8Ø 2 3 4 2 5 8 Outdoor air knockout 12 13 7 8 37 1 2 ...

Page 20: ...iffs NJ All rights reserved LG is a registered trademark of LG Corp GENERAL DATA LPHQVLRQV 77 UDPH ZLWK 37 87 ULOOH 13 16 2 9 16 7 1 16 9 3 4 2 1 4 3 1 2 3 13 16 6 7 8 5 3 16 1 1 4 17 3 4 55 15 16 19 11 16 1 5 16 47 1 4 Air Outlet Hole 2 9 16 52 7 16 46 7 16 Unit inches Note All measurements have a tolerance of 1 4 in 15 3 8 2 3 4Ø 1 8Ø 2 5 8 Outdoor air knockout 13 7 8 12 50 1 4 ...

Page 21: ... Drain Piping Connection Routing Hole for Wired Remote Controller Wiring Flexible Drain Hose Air Intake Ceiling Cassette Grille Corner Display Cover Supplied with Grille Ceiling Cassette Grille Kit PT USC required sold separately Air Outlet Knock Out Fresh Air Intake Hole Communication Line Refrigerant Drain Piping Direction 1 Unit should be installed in compliance with the installation manual 2 U...

Page 22: ...s 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 GENERAL DATA LPHQVLRQV 75 UDPH ...

Page 23: ...6 3 16 157 7 9 16 192 23 5 8 600 Ceiling Opening 23 5 8 600 Ceiling Opening 20 3 8 517 Hanging Bolt 20 3 8 517 Hanging Bolt 10 3 16 259 10 3 16 259 10 3 16 259 10 3 16 259 20 9 16 523 Hanging Bolt 18 1 8 461 Hanging Bolt 22 7 16 570 22 7 16 570 5 9 16 142 2 50 1 3 16 30 1 25 1 25 7 3 16 183 1 5 16 34 3 1 2 89 6 1 16 154 24 7 16 620 14 15 16 379 Air Outlet Hole 24 7 16 620 14 15 16 379 Air Outlet H...

Page 24: ...nded in accordance with the local or state regu lations and applicable national codes 3 All field supplied electrical components and materials must comply with local state and national codes Outside Air Intake Hole Unit Inch Air Outlet Air Inlet Wired Remote Controller Wiring Routing Hole Power Wiring and Communications Cable Routing Hole Installation Position of Frame Retain the distance shown be...

Page 25: ... EEV Electronic Expansion Valve Heat Exchanger CFF Th3 Th2 EEV Filter Filter Th1 Refrigerant Pipes to Outdoor Unit Ceiling Cassette lndoor Unit One Way Flare Nut Flare Nut Liquid Line Vapor Line Figure 6 Refrigerant Piping Diagram TS Frame Heat Exchanger Turbo Fan Th3 Th1 Th2 EEV Filter Filter Refrigerant Pipes to Outdoor Unit Liquid Line Vapor Line Flare Nut Flare Nut Ceiling Cassette lndoor Unit...

Page 26: ...a registered trademark of LG Corp GENERAL DATA 5HIULJHUDQW 3LSLQJ LDJUDPV Heating Cooling Th1 Thermistor Return Air Th2 Thermistor Pipe In Th3 Thermistor Pipe Out EEV Electronic Expansion Valve Heat Exchanger Turbo Fan Th3 Th1 Th2 EEV Ceiling Cassette lndoor Unit 4 Way Filter Filter Refrigerant Pipes to Outdoor Unit Flare Nut Flare Nut Liquid Line Vapor Line Figure 7 Refrigerant Piping Diagram TR ...

Page 27: ...d pattern to determine the size of the ceiling opening and the hanging bolt locations required by the unit Don ts R QRW LQVWDOO WKH XQLW ZKHUH LW ZLOO EH VXEMHFWHG WR GLUHFW WKHUPDO UDGLDWLRQ IURP RWKHU KHDW VRXUFHV R QRW LQVWDOO WKH XQLW LQ D ORFDWLRQ ZKHUH DFLGLF VROXWLRQ DQG VSUD VXOIXU DUH RIWHQ XVHG R QRW XVH WKH XQLW LQ HQYLURQPHQWV ZKHUH RLO RU VXOIXULF JDV DUH SUHVHQW R QRW LQVWDOO WKH XQL...

Page 28: ...Required Clearances for Cassette Indoor Units See the figure below for required clearance distances around a typical installed Cassette indoor unit RFDWLRQ 6HOHFWLRQ 5HTXLUHG OHDUDQFHV Follow paper pattern to install the screws 4 pieces Paper pattern for installation Adjust the same height Ceiling board Ceiling Cut the ceiling following the outside edge of the paper pattern Indoor Unit Ceiling boa...

Page 29: ...MXVWRU WR LQVSHFW DOO RXU VXSHUYLVRU RQ KRZ WR SURFHHG ZLWK ILOLQJ D IUHLJKW FODLP DQG WR RUGHU D UHSODFHPHQW XQLW 7R DYRLG GDPDJLQJ WKH LQGRRU XQLW GR QRW XQSDFN WKH XQLW DQG UHPRYH WKH SURWHFWLYH PDWHULDOV XQWLO LW LV UHDG WR LQVWDOO HIRUH XQSDFN LQJ FDUHIXOO PRYH WKH SDFNDJHG XQLW WR D ZRUN DUHD QHDU WKH LQVWDOODWLRQ ORFDWLRQ 1 Before opening the shipping container verify that the correct unit ...

Page 30: ...g 2 Use the provided paper template or corrugated cardboard from the bottom packaging as a guide to determine the size of the ceil ing opening and the hanging bolt locations required by the unit The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions To access carefully cut away corrugated cardboard from the packing material 3 Using one of the tem...

Page 31: ...JHUV EROWV DQG KDUGZDUH PXVW EH VHFXUHO LQVWDOOHG WR SUHYHQW WKH IUDPH IDOOLQJ IURP LWV ORFDWLRQ 7KHUH LV ULVN RI SURSHUW GDPDJH IURP IDOOLQJ HTXLSPHQW QVXUH WKH XQLW LV SURSHUO LQVWDOOHG QFRUUHFWO LQVWDOOHG XQLWV FDQ UHVXOW LQ GHJUDGHG SHUIRUPDQFH RU DQ LQRSHUDWLYH XQLW V VWHP 8VH D OHYHO LQGLFDWRU WR HQVXUH WKH IUDPH LV LQVWDOOHG RQ D OHYHO SODQH QFRUUHFWO LQVWDOOHG XQLWV FDQ UHVXOW LQ GHJUDGHG ...

Page 32: ...nit 3 Refer to the installation guide template for the dimensions to the ceiling opening Match the center of the indoor unit labeled to the center indicated on the installation guide 4 Align the installation guide template with the label attached to the unit affixing the template to the unit if desired to properly place the unit 5 Remove the temporary washer plate and position the indoor unit hang...

Page 33: ...ugh the walls Evacuate system to a maximum of 500 microns and insure the vacuum holds at that level for 1 hour Remove dust from the piping Piping ends should remain capped until connections are complete Connect piping properly at the side of the unit Remove caps only after the piping is cut and burrs are removed Retain the cap on the piping when passing it through walls etc Test system for air tig...

Page 34: ...insulation in the confines of the support clamp A properly installed pipe system will have sufficient supports to avoid pipes from sagging during the life of the system As necessary place supports closer for segments where potential sagging could occur Maximum spacing of pipe supports shall meet local codes If local codes do not specify pipe support spacing pipe must be supported Maximum of five 5...

Page 35: ...d Compare the geometry with the figure to the right If the flare is defective cut it off and re do procedure If flare looks good blow the pipe clean with dry nitrogen 90 45 A R 0 4 0 8 Dimensions of the Flare Pipe Size in O D A Dimension mm in 1 2 1 4 5 8 3 8 3 4 Flared Connection Dimensions Tightening Torque Handle Incorrect Flare Even Length Cracked Yoke Inside is shiny with no scratches Surface...

Page 36: ...ing the flare nuts use both a torque wrench and a backup wrench 4 After all the piping has been connected and the caps have been tightened check for refrigerant gas leaks Loosening the Flare Nuts Always use two 2 wrenches to loosen the flare nuts Do not use polyolyester POE or any other type of mineral oil as a thread lubricant These lubricants are not compatible with the PVE oil used in this syst...

Page 37: ...tter do not use a saw to cut pipe De bur and clean all cuts before assembly 7 Brazing joints Use a dry nitrogen purge operating at a minimum pressure of three 3 psig and maintain a steady flow Use a 15 silver phosphorous copper brazing alloy to avoid overheating and produce good flow Protect isolation valves electronic expansion valves and other heat sensitive control components from excessive hea...

Page 38: ... WKDW FDQ HDVLO EHFRPH EORFNHG Figure 27 Typical Refrigerant Line Flare Fitting Insulation Detail No Clearance Overlap Insulation Where the Port and the Piping Meet Insulation for Indoor Unit Port Field Supplied Insulation for Refrigerant Piping Field Supplied Insulation Clip Field Supplied REFRIGERANT PIPING 3LSH RQQHFWLRQV QVXODWLQJ WKH 5HIULJHUDQW 3LSLQJ Insulating the Refrigerant Piping Suffic...

Page 39: ...trap at the top of the IDU condensate pump discharge riser before connection to the Y 45 fitting No Gravity Condensate Pipe Connection Ceiling cassette indoor units do not have a gravity condensate pipe connection There is a service drain plug on the bottom of each unit under the decorative panel This drain plug is intended as a service feature and is not to be used as a permanent gravity drain co...

Page 40: ...n location 2 Connect the provided flexible drain pipe to the main drain pipe 7KH VXSSOLHG ÀH LEOH GUDLQ KRVH PXVW QRW EH LQVWDOOHG ZLWK D VKDUS FXUYH RU WZLVW FXUYHG RU WZLVWHG ÀH LEOH KRVH ZLOO EHFRPH GDPDJHG GXH WR YLEUDWLRQ DQG RU OHDNV 3 Pour water into the flexible pipe as shown in the figure at right to test for leaks Repair leaks if necessary 4 Route the flexible drain pipe to the indoor un...

Page 41: ...l 6 Attach the vane motor connector display connector and air inlet 7 Install the air inlet panel including the air filter and side covers Figure 33 One Way Cassette Decorative Cover Installation QVWDOO WKH GHFRUDWLYH FRYHU VQXJO DQG ZLWKRXW JDSV Q JDSV EHWZHHQ WKH FHLOLQJ DQG WKH FDVVHWWH IUDPH ZLOO UHOHDVH FRRO DLU ZKLFK ZLOO FDXVH VZHDWLQJ DWHU GURSV WKDW IDOO ZLOO GDPDJH WKH VXUURXQGLQJ FHLOLQ...

Page 42: ...tion Screws Two Way Decorative Cover Installation HFRUDWLYH FRYHU LV DQ RSWLRQDO DFFHVVRU WKDW LV VROG VHSDUDWHO HIRUH LQVWDOOLQJ WKH GHFRUDWLYH SDQHO DOZD V UHPRYH WKH SDSHU WHPSODWH ILUVW 1 Install the two decorative cover attaching screws M5 on the cassette frame factory supplied Tighten only about 3 8 inch 2 Remove the air inlet grille from the decorative cover Remove the hook for the air inle...

Page 43: ... 2 Places about 3 8 in QVWDOO WKH GHFRUDWLYH FRYHU VQXJO DQG ZLWKRXW JDSV Q JDSV EHWZHHQ WKH FHLOLQJ DQG WKH FDVVHWWH IUDPH ZLOO UHOHDVH FRRO DLU ZKLFK ZLOO FDXVH VZHDWLQJ DWHU GURSV WKDW IDOO ZLOO GDPDJH WKH VXUURXQGLQJ FHLOLQJ ÀRRU DQG ZDOOV Figure 39 Properly Installing Decorative Cover Against the Four Way Cassette Indoor Unit Frame Four Way Decorative Cover Installation HFRUDWLYH FRYHU LV DQ ...

Page 44: ...KDW FRYHUV WKH ZKROH FDELQHW 5HFRPPHQGHG LQVXODWLRQ WKLFNQHVV LV PRUH WKDQ LQFKHV PP I WKH LQVXODWLRQ WKLFNQHVV LV OHVV WKDQ LQFKHV PP FRQGHQ VDWLRQ ZLOO IRUP RQ LQ WKH FDELQHW A A B B Unit Inch 3 15 16 13 3 4 2 2 2 2 3 15 16 Cut Side Panels Cut EPS Foam Insulation C C D D Duct Chamber Cover the Whole Cabinet with Insulation Figure 40 Four Way Cassette Indoor Unit Branch Duct Option Examples Figur...

Page 45: ... decreasing I WKH LQVXODWLRQ RQ LQ WKH GXFW FKDPEHU VXE GXFW LV QRW WKLFN HQRXJK FRQGHQVDWLRQ ZLOO IRUP RQ LQ WKH FDELQHW I WKH LQVXODWLRQ RQ WKH DLU RXWOHW LV QRW WKLFN HQRXJK FRQGHQVDWLRQ ZLOO IRUP RQ WKH YDQH DQG IURQW SDQHO I WKH LQVXODWLRQ RQ WKH DLU RXWOHW GRHV QRW FRYHU LW HQWLUHO FRQGHQ VDWLRQ ZLOO IRUP RQ WKH YDQH DQG IURQW SDQHO Ceiling Panel 5 Install the insulated flexible duct Use a c...

Page 46: ... GXFW DQG ZDOO XVH D SODVWLF VOHHYH HWF 3 R QRW LQVWDOO WKH GXFW DV VKRZQ LQ WKH LPDJHV EHORZ Room1 Room2 Indoor Unit Room 1 Room 2 Indoor Unit R ndoo Uni Ro oor nit Roo do Roo o Indoor Unit Indoor Unit Do not sharply bend the duct Do not bend the duct too many times Do not reduce the duct diameter INSTALL BRANCH DUCT Duct System Application Figure 48 Correct Duct System Application Ducts Should S...

Page 47: ...WUXF WLRQV LQ WKLV PDQXDO FDQ UHVXOW LQ HTXLSPHQW PDOIXQFWLRQ RU SURSHUW GDPDJH RQVLGHU DPELHQW FRQGLWLRQV WHPSHUDWXUH GLUHFW VXQOLJKW LQFOHPHQW ZHDWKHU HWF ZKHQ VHOHFWLQJ LQVWDOOLQJ DQG FRQQHFWLQJ WKH SRZHU ZLULQJ 3URSHUO JURXQG DOO RXWGRRU XQLWV DQG LQGRRU XQLWV URXQG ZLULQJ PXVW DOZD V EH LQVWDOOHG E D TXDOLILHG WHFKQLFLDQ PSURSHUO JURXQG ZLUH FDQ FDXVH FRPPXQLFDWLRQ SUREOHPV IURP HOHFWULFDO QR...

Page 48: ...KLOH VHUYLFLQJ DQG WR SUHYHQW H WHUQDO IRUFHV IURP GDPDJLQJ WKH WHUPLQDO EORFN Copper Wire Terminate multiple power wires of the same gauge to both sides Do not terminate two wires on one side Do not terminate different gauge wires to a terminal block 3RZHU LULQJ RPPXQLFDWLRQ DEOH RQQHFWLRQV Best practice dictates using solderless ring or fork terminals at all power wiring and communica tion cable...

Page 49: ...UV IXVHV RYHUFXUUHQW SURWHFWLRQ VZLWFKHV DQG ZLULQJ LQ DFFRUGDQFH ZLWK ORFDO VWDWH DQG 1 UHJXODWLRQV UHODWHG WR HOHFWULFDO HTXLSPHQW DQG ZLULQJ DQG IROORZLQJ WKH LQVWUXFWLRQV LQ WKLV PDQXDO HQHUDWHG RYHUFXUUHQW ZLOO LQFOXGH VRPH DPRXQW RI GLUHFW FXUUHQW 8VLQJ DQ RYHUVL HG EUHDNHU RU IXVH ZLOO UHVXOW LQ HOHFWULF VKRFN SK VLFDO LQMXU RU GHDWK 8VH WKH DSSURSULDWH W SH RI RYHUFXUUHQW SURWHFWLRQ HQHUDW...

Page 50: ...eat recovery units Insulation as required by NEC and local codes Rated for continuous exposure of temperatures up to 140 F Maximum allowable communication cable length is 3 281 feet HeatRecoveryUnit ForHeatRecovery SystemsOnly MasterOutdoorUnit IndoorUnit IndoorUnit IndoorUnit IndoorUnit IndoorUnit IndoorUnit WiredControllers WiredControllers WiredControllers Figure 54 Correct Master Outdoor Unit ...

Page 51: ...Some indoor units use terminal block connections other indoor units use Molex connections See diagrams below for the two options Refer to the wiring diagram schematic found in the indoor unit itself or to the indoor unit wiring diagrams in the Engineering Manuals for more information NEVER splice cut or extend LG supplied cable with field provided cable Always include enough cable to cover distanc...

Page 52: ...ductor twisted stranded unshielded All wiring must comply with all applicable local and national codes From the master indoor unit to the slave indoor unit s daisy chain using 22 AWG 3 conductor twisted stranded unshielded Do not attach wire to 12VDC terminal to the slave indoor units All wiring must comply with all applicable local and national codes For indoor units with CN REMO connections Use ...

Page 53: ...Q DQG SRODULW FRQILJXUDWLRQ DLOXUH WR IROORZ DQ RI WKHVH SRZHU DQG FRPPXQLFDWLRQV ZLULQJ JXLGHOLQHV RU LQVWUXFWLRQV ZLOO FDXVH FRPPXQLFDWLRQV HUURUV DQG XQLW PDO IXQFWLRQ Do Not s 1HYHU XVH ZLUH FDSV DQG QHYHU VSOLFH FRPPXQLFDWLRQV FDEOHV 1HYHU FRQQHFW RQH FRQWUROOHUV RU RWKHU FHQWUDO FRQWUROOHUV RU EXLOGLQJ PDQDJHPHQW V VWHP JDWHZD V WR WKH LQGRRU XQLW RXWGRRU XQLW FRPPXQLFDWLRQV FDEOH Connection...

Page 54: ...iring connections the Outdoor Unit Installation Manual for information regarding the outdoor unit and heat recovery unit wiring connections or review the wiring diagrams on the applicable units URVV FRQQHFWLQJ WKH DQG RU DQG WHUPLQDOV ZLOO FDXVH FRPPXQLFDWLRQV HUURUV DQG V VWHP PDOIXQFWLRQ LHOG SURYLGHG FRPPXQLFDWLRQ FDEOH EHWZHHQ 0DLQ 2 8 WR 8V 58V WR EH FRQGXFWRU WZLVWHG VWUDQGHG VKLHOGHG QVXUH ...

Page 55: ... 2QH D 77 78 UDPHV 1 L1 2 L2 3 A 4 B Power Supply High Voltage 208 230V Communications Lock nut Conduit mounting plate Conduit Indoor Unit Terminal Block 1 L1 Power Input 208 230V 60 Hz 1 Phase A A B B GND 12V DRY2 DRY1 INTERNET IDU SODU 3 4 2 L2 Outdoor Unit Terminal Block Ground Communication Line IDU to ODU Figure 61 TT TU Frame Wiring Cable Connections Figure 60 Typical TT TU Frame Wiring Cabl...

Page 56: ... Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING 2QH D 77 78 UDPHV 5 18 Figure 62 TT TU Frame Wiring Diagram If a Third Party Dry Contact and an LG internal heater or an LG Auxiliary Heater Kit is installed supplemental heat capability cannot be controlled by the Third Party Thermostat ...

Page 57: ...l CN_VANE2 Step Motor Step motor output CN_VANE1 Step Motor Step motor output CN_DCDRAIN Drain pump output AC output for drain pump CN_485 Communication Connection between indoor and outdoor units CN_COMM Communication Connection on Sub PCB between indoor and outdoor units CN_POWER AC Power supply AC power line input for indoor controller DIP Switch Setting Off On Remarks SW3 GROUP CONTROL Master ...

Page 58: ...Wiring Conduit Power Wiring Figure 63 Typical TS Frame Wiring Cable Routing Figure 64 TS Frame Wiring Cable Connections Communication Line IDU to ODU Indoor Unit Terminal Block RD YL A B BK N L2 L L1 Wired Remote Controller A B A B A B GND 12V DRY2 DRY1 INTERNET Outdoor Unit Terminal Block IDU ODU Ground Power Input 208 230V 60 Hz 1 Phase If a Third Party Dry Contact and an LG internal heater or a...

Page 59: ...tronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING 7ZR D 76 UDPH Figure 65 TS Frame Wiring Diagram 5 18 If a Third Party Dry Contact and an LG internal heater or an LG Auxiliary Heater Kit is installed supplemental heat capability cannot be controlled by the Third Party Thermostat ...

Page 60: ...ti V IV Multi V Water IV Multi V S Engineering Manual for additional information Terminal Purpose Function CN MOTOR1 Fan motor output Motor output of BLDC CN EEV EEV Output EEV Control output CN CC Dry Contact Dry Contact CN OPTION Option PCB EEPROM Option PCB connection CN ROOM Room sensor Room air thermistor CN PIPE_IN Suction pipe sensor Pipe in thermistor CN HUMID N A N A CN PIPE_OUT Discharge...

Page 61: ...ur Way Cassette Wiring Cable Routing Side View Power Supply High Voltage 208 230V L L1 N L2 YL RD BK A B Lock nut Conduit mounting plate Conduit Figure 69 TA Frame Four Way Cassette Wiring Cable Routing Side View Outside Air Kit 208 230 V 3 L3 4 L4 Power Supply 208 230 V Communication Cable 3 A 4 B Lock nut Conduit Conduit mounting plate 1 L1 2 L2 To Outside Air Kit RD YL BK TA Frame L L3 N L4 L L...

Page 62: ... Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp RXU D 75 74 UDPHV WIRING Figure 71 TR TQ Frame Wiring Diagram 5 18 If a Third Party Dry Contact and an LG internal heater or an LG Auxiliary Heater Kit is installed supplemental heat capability cannot be controlled by the Third Party Thermostat ...

Page 63: ...ts 1 On Automatic vent relay will be turned on after ten 10 seconds of indoor unit operation 2 Off Manual ventilator needs to be set through the controller Terminal Purpose Function CN_MOTOR1 Fan motor output Motor output of BLDC CN_WF Wi Fi module Wi Fi module connection CN PTC Auxiliary heater Auxiliary heater connection CN_DUST N A N A CN_FLOAT Float switch input Float switch sensing CN_EEV EEV...

Page 64: ...n LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING RXU D 7 UDPH Figure 72 TA Frame Wiring Diagram 2 21 If a Third Party Dry Contact and an LG internal heater or an LG Auxiliary Heater Kit is installed supplemental heat capability cannot be controlled by the Third Party Thermostat ...

Page 65: ...eration 2 Off Manual ventilator needs to be set through the controller RXU D 7 UDPH Terminal Purpose Function CN_485 Communication Connection between indoor and outdoor units CN_MOTOR Fan motor output Motor output of BLDC CN_GRILL Elevation grille Elevation grille connection CN_PTC Auxiliary heater Auxiliary heater connection CN_CC Dry contact Dry Contact connection CN_EEV EEV Output EEV control o...

Page 66: ...J HTXLSPHQW 3HUIRUPLQJ WKHVH DFWLRQV ZLOO FDXVH FRPPXQLFDWLRQ HUURUV DQG XQLW PDOIXQFWLRQ WIRING Wired Controller Installation Ceiling Cassette indoor units can be used with various wired controllers optional sold separately Wired controllers include a sensor to detect room temperature To maintain comfort levels in the conditioned space the wired controller must be installed in a location away fro...

Page 67: ...ts were released in June 2018 and are not automatically backwards compatible with all LG manu factured VRF air water source units The 3A heat recovery units will be compatible with many LG manufactured air source water source units if the its Starting Production Date the Production Starting Serial No and or the Upgrade Software Service dates fall after the dates shown below see table LG VRF system...

Page 68: ...ayed at the wired remote controller Indoor units not in error can still be controlled To Select MAIN No 3 Off To Select SUB No 3 On Figure 74 Cassette Indoor Unit Main Sub DIP Switch Settings DIP Switch Settings See the following pages for group control configurations If the indoor unit is a main set switch 3 of the indoor unit s DIP switch to Off If the indoor unit is a sub set switch 3 of the in...

Page 69: ...een Indoor Units Main Dry Contact Optional ACP 5 AC Smart 5 LGAP Network System Wireless Handheld Controller MultiSITE CRC CONTROLS SETUP Figure 76 Group Control Method 2 Two Wired Remote Controllers One Configured as a Main and the Other as a Sub GND Signal 12V Sub Sub RQ ތ W FRQQHFW VHULDO 9 OLQH Main Main Main LVSOD UURU 0HVVDJH Main U RQWDFW 2SWLRQ Wireless Handheld Controller MultiSITE CRC Mu...

Page 70: ... Main Display Error Message Display Error Message N M Dry Contact Optional ACP 5 AC Smart 5 LGAP Network System MultiSITE CRC Wireless Handheld Controller OAU Controller Group Control Method 3 Similar to Group Control Method 1 except outside air units and standard indoor units must be grouped separately 1 0 EHFDXVH VHW temperatures are different CONTROLS SETUP OAU Outside Air Intake Unit Standard ...

Page 71: ... are connected to one indoor unit Set only one indoor unit in a group to main set the others to sub If main sub s are not set properly in a group application a malfunction will occur Set only one Simple Remote Controller to main set the others to sub All types of indoor units can be configured in a Group Control Method 4 configuration A wireless remote controller can be used at the same time as a ...

Page 72: ... rights reserved LG is a registered trademark of LG Corp Figure 80 Remote Control Display Error Message Main AC Smart 5 ACP 5 Optional Other Building Mgmt System Optional LGMV LGAP Network System GND Signal 12V Dry Contact Optional Remote Button Sensor Main MultiSITE CRC Wireless Handheld Controller Remote Control Figure below shows an example of a remote control configuration CONTROLS SETUP ...

Page 73: ...re of a 45 of vertical If required by local code is a secondary high level condensate shutoff switch present wired properly factory provided internal high level float switch will shut down cooling operation if high water level in the pan is detected Duct Work Description Check All seams sealed no air leaks Duct work is properly sized considering the available external static pressure rating of the...

Page 74: ...n at the terminal block Power wiring and communication cables are protected from chaffing and sharp edges at control box case and conduit pipe openings Communication cable between Master ODU to Slave ODU s and Master ODU to IDUs HRUs to be 18 AWG 2 conductor twisted stranded shielded Ensure the communication cable shield is properly grounded to the Master ODU chassis only Cable segment shields are...

Page 75: ...tte_IDU_6_20 IM_MultiV_CeilingCassette_IDU_11_19 IM_MultiV_CeilingCassette_IDU_9_16 IM_MultiV_CeilingCassette_IDU_2_16 IM MultiV IV CeilingCassette 01 15 LG Electronics U S A Inc Air Conditioning Technologies 4300 North Point Parkway Alpharetta Georgia 30022 www lghvac com ...

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