LG MULTI V S ARUN072BSS5 Engineering Manual Download Page 1

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THREE-PHASE

HEAT PUMP

OUTDOOR UNIT

ENGINEERING MANUAL

Variable Refrigerant Flow

208-230V, 60 Hz, 3-Phase Outdoor Units

6.0 and 8.0 Tons

Summary of Contents for MULTI V S ARUN072BSS5

Page 1: ...THREE PHASE HEAT PUMP OUTDOOR UNIT ENGINEERING MANUAL Variable Refrigerant Flow 208 230V 60 Hz 3 Phase Outdoor Units 6 0 and 8 0 Tons ...

Page 2: ... 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 To access additional technical documentation such as submittals indoor unit engineering manuals installation service product data performance general best practice and building ventilation manuals as well as white ...

Page 3: ... that may result in equipment or property damage accidents only This symbol indicates an action must not be completed DANGER CAUTION Unit Nomenclature 4 LG Air Conditioner Technical Solution LATS 5 6 Refrigerant Charge Worksheet 7 Outdoor Unit Product Data 8 23 0HFKDQLFDO 6SHFL FDWLRQV 9 10 2XWGRRU 8QLW 6SHFL FDWLRQV 11 Electrical Data 12 Dimensions Center of Gravity 13 Wiring Diagram 14 Refrigera...

Page 4: ...FWURQLFV 8 6 QF QJOHZRRG OLIIV 1 OO ULJKWV UHVHUYHG LV D UHJLVWHUHG WUDGHPDUN RI RUS THREE PHASE Outdoor Units ODU ARU N 072 B S 5 Generation 5 Fifth Airflow Configuration S Side Discharge Electrical Ratings B 208 230V 60Hz 3Ph Capacity Mbh Type N Heat Pump Family ARU Multi V Outdoor Unit Refrigerant R410A 072 72 096 96 UNIT NOMENCLATURE Outdoor Units S Type S Standard ...

Page 5: ...ATS 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 component choices Build systems in Tree Mode where the refrigerant system can be ...

Page 6: ...rawing including as built straight lines and elbows This Mark Up drawing must be returned to the design engineer or Rep who must input contractor changes into the LATS file Copy the original LATS software file save and rename as a separate file and modify all piping lengths by double clicking on each length and editing information Like the shop drawing the Auto Piping and System Check must also be...

Page 7: ...allery SF 9k to 12k 0 22 12 1 Way Cassette TU 7k to 12k 0 44 13 1 Way Cassette TT 18k to 24k 0 64 14 2 Way Cassette TS 18k to 24k 0 75 15 4 Way 2 x 2 Cassette TR 5k to 7k 0 40 16 4 Way 2 x 2 Cassette TR 9k to 12k 0 55 17 4 Way 2 x 2 Cassette TQ 15k to 18k 0 71 18 4 Way 3 x 3 Cassette TA 7k to 48k 1 5 19 High Static Ducted M1 7k to 24k 0 57 20 High Static Ducted M2 7k to 24k 0 77 21 High Static Duc...

Page 8: ...Specifications on page 9 General Data on page 11 Electrical Data on page 12 Dimensions Center of Gravity on page 13 Wiring Diagram on page 14 Refrigerant Flow Diagrams on page 15 Acoustic Data on page 18 Accessories on page 20 ...

Page 9: ...rant piping system for a minimum period of three 3 minutes after eight 8 hours of compressor operation Single Inverter Compressor The outdoor unit is equipped with one hermetically sealed scroll 6 8 ton compressor The compressor is specifically designed for the refrigerant provided and is manufactured by LG The frequency inverter is designed by LG and is capable of providing a modulation range for...

Page 10: ...em pump down cycle designed to store refrigerant in the outdoor unit up to 13 2 lbs 6 8 ton In Heating mode a cooperative control algorithm automatically balances in real time the distribution of refrigerant to the indoor units when the system s refrigerant mass flow is insufficient to satisfy the demand of all indoor units when the system is called on to operate outside the system design paramete...

Page 11: ...le 1 9 3KDVH 2XWGRRU 8QLW 6SHFL FDWLRQV 1 Nominal capacity applied with non ducted indoor units and 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 capaci ties are net with a Combination Ratio between 95 105 Nominal cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb DB and...

Page 12: ...nit Model No Compressor Motor Outdoor Unit Fan Motor MCA MOCP Quantity Motor Amps Fan Qty Amps RLA Ea FLA x Qty 6 0 ARUN072BSS5 1 17 6 2 1 2 x 2 24 4 40 8 0 ARUN096BSS5 1 18 6 2 1 2 x 2 25 7 40 Voltage tolerance is 10 Maximum allowable voltage unbalance is 2 MCA Minimum Circuit Ampacity Maximum Overcurrent Protection MOCP is calculated as follows Largest motor FLA x 2 25 Sum of other motor FLA rou...

Page 13: ...QWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL FDWLRQV PD FKDQJH ZLWKRXW QRWL FDWLRQ OHFWURQLFV 8 6 QF QJOHZRRG OLIIV 1 OO ULJKWV UHVHUYHG LV D UHJLVWHUHG WUDGHPDUN RI RUS DIMENSIONS CENTER OF GRAVITY Figure 4 ARUN072BSS5 and ARUN096BSS5 Dimensions THREE PHASE ...

Page 14: ... XH WR RXU SROLF RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL FDWLRQV PD FKDQJH ZLWKRXW QRWL FDWLRQ OHFWURQLFV 8 6 QF QJOHZRRG OLIIV 1 OO ULJKWV UHVHUYHG LV D UHJLVWHUHG WUDGHPDUN RI RUS WIRING DIAGRAM Figure 5 ARUN072BSS5 and ARUN096BSS5 Wiring Diagram 7 2021 THREE PHASE ...

Page 15: ...ircuit Outlet Temperature Sensor Accumulator Liquid Pipe Temperature sensor Remarks Pressure Sensor Temperature Sensor Solenoid valve EEV Strainer Outdoor Unit Pressure Switch SVC Valve Sub Cooling EEV Sub Cooler Inverter Compressor Comp Discharge Temperature Sensor High Pressure Switch High Pressure Sensor Low Pressure Sensor Hot Gas Valve Oil Separator Charging Port Fusible Plug Vapor Pipe Liqui...

Page 16: ...rature Sensor Outdoor Unit HEX Temperature Sensor Fan Indoor Unit Indoor Unit 4 Way Valve Outdoor EEV Sub cooling Circuit Outlet Temperature Sensor Accumulator Liquid Pipe Temperature sensor Remarks Pressure Sensor Temperature Sensor Solenoid valve Strainer Outdoor Unit Pressure Switch SVC Valve Sub Cooling EEV Sub Cooler Inverter Compressor Low Pressure Sensor Oil Separator Vapor Pipe Liquid Pipe...

Page 17: ...EV Sub cooling Circuit Outlet Temperature Sensor Sub Cooler Accumulator Remarks Pressure Sensor Temperature Sensor Solenoid valve Strainer Outdoor Unit Pressure Switch SVC Valve Sub Cooling EEV Inverter Compressor Low Pressure Sensor Oil Separator Vapor Pipe Liquid Pipe High Temp High Pressure Vapor High Temp High Pressure Liquid Low Temp Low Pressure Vapor Fan Outdoor Temperature Sensor Outdoor U...

Page 18: ...BSS5 Acoustic Measurement Location Sound Pressure Levels 0HDVXUHPHQW WDNHQ ƍ DERYH ILQLVKHG IORRU DQG DW D GLVWDQFH RI ƍ IURP IDFH RI IDQ discharge Measurements taken with no attenuation and units operating at full load normal operating condition Sound level will vary depending on a range of factors such as construction acoustic absorption coefficient of particular area in which the equipment is i...

Page 19: ...und 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 5HIHUHQFH DFRXVWLF LQWHQVLW G ȝ P2 Model No dB A ARUN072BSS5 72 ARUN096BSS5 73 Table 4 ARUN072BSS5 and ARUN096BSS5 Sound Power Le...

Page 20: ...19 05 2 I D 1 4 6 35 I D 3 8 9 52 I D 3 8 9 52 ARBLN14521 I D 1 2 12 7 2 3 4 70 18 9 16 471 20 3 8 517 125 4 15 16 5 1 8 130 I D 5 8 15 88 I D 1 5 8 41 3 I D 1 5 8 41 3 I D 1 5 8 41 3 I D 1 1 2 38 1 I D 1 1 2 38 1 I D 1 1 2 38 1 O D 1 1 2 38 1 O D 5 8 15 88 2 3 3 2 2 3 3 4 3 4 120 4 3 4 120 3 9 16 90 I D 3 4 19 05 I D 3 4 19 05 I D 7 8 22 2 I D 7 8 22 2 O D 7 8 22 2 I D 1 3 8 34 9 I D 1 3 8 34 9 I...

Page 21: ...5 8 I D 1 2 I D 3 4 I D 5 8 I D 7 8 I D 1 1 8 I D 1 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 I D 5 8 I D 1 2 I D 5 8 I D 1 2 I D 5 8 I D 3 4 4 3 4 I D 1 4 I D 3 8 I D 3 8 I D 1 2 6 5 16 22 7 8 I D 3 4 I D 5 8 ID15 88 5 8 ID12 7 1 2 I D 5 8 I D 1 2 I D 7 8 I D 1 1 8 I D 1 27 9 16 4 3 4 I D 1 4 I D 3 8 I D 3 8 I D 1 4 I D 3 8 I D 1 2 I D 5 8 I D 1 2 4 3 4 28 3 8 I D 1 4 I D 3 8 I ...

Page 22: ...HJLVWHUHG WUDGHPDUN RI RUS ACCESSORIES Low Ambient Wind Baffle ZLABGP04A Optional low ambient baffles allow for Multi V S Three Phase outdoor units operation down to 9 9 F in cooling mode Includes 20 Gauge Paint Grip Wind Baffle in Soft Dove Grey RXU LQF 3ODWHG 3DQ HDG 3KLOOLSV 6FUHZV Ǝ Use two 2 ZLABGP04A kits with the 6 ton ARUN072BSS5 and 8 ton ARUN096BSS5 Contact an LG Sales Representative for...

Page 23: ...o connect a computer USB port to the outdoor unit main printed circuit board PCB using an accessory cable without the need for a separate interface device The main screen for LGMV allows user to view the following real time data on one screen Additional screens can be accessed by tabs on the main screen 1 Cycleview Graphic of internal components including 2 Graph Full screen graph of actual high a...

Page 24: ...Cooling Capacity Data on page 25 Heating Capacity Data on page 35 Maximum Heating Capacity Data on page 41 PERFORMANCE DATA ...

Page 25: ... 6 5 43 46 7 5 43 47 5 5 45 47 5 5 47 120 9 9 59 6 1 75 71 1 2 12 82 6 2 51 88 5 2 71 92 5 2 92 96 7 3 35 98 7 3 46 4 59 6 1 85 71 1 2 24 82 6 2 65 88 5 2 86 92 5 3 08 96 7 3 53 98 7 3 65 0 59 6 1 92 71 1 2 33 82 6 2 76 88 5 2 97 92 5 3 21 96 7 3 67 98 7 3 80 5 59 6 1 99 71 1 2 41 82 6 2 86 88 5 3 08 92 5 3 32 96 7 3 81 98 7 3 94 10 59 6 2 05 71 1 2 48 82 6 2 94 88 5 3 17 92 5 3 42 96 7 3 92 98 7 ...

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Page 27: ...44 0 4 64 80 9 9 38 9 1 09 46 3 1 32 54 0 1 53 57 5 1 66 61 4 1 79 68 8 2 05 76 2 2 28 4 38 9 1 16 46 3 1 39 54 0 1 62 57 5 1 76 61 4 1 89 68 8 2 16 76 2 2 41 0 38 9 1 20 46 3 1 45 54 0 1 68 57 5 1 83 61 4 1 97 68 8 2 25 76 2 2 50 5 38 9 1 25 46 3 1 50 54 0 1 74 57 5 1 89 61 4 2 04 68 8 2 33 76 2 2 60 10 38 9 1 28 46 3 1 54 54 0 1 79 57 5 1 95 61 4 2 10 68 8 2 40 76 2 2 67 14 38 9 1 33 46 3 1 60 5...

Page 28: ... 1 3 57 40 5 3 17 40 2 3 58 60 9 9 29 3 0 84 34 7 0 97 40 5 1 14 43 1 1 22 46 0 1 31 51 8 1 49 57 2 1 66 4 29 3 0 88 34 7 1 03 40 5 1 20 43 1 1 29 46 0 1 39 51 8 1 57 57 2 1 75 0 29 3 0 92 34 7 1 07 40 5 1 25 43 1 1 34 46 0 1 44 51 8 1 63 57 2 1 83 5 29 3 0 95 34 7 1 11 40 5 1 30 43 1 1 39 46 0 1 49 51 8 1 69 57 2 1 89 10 29 3 0 98 34 7 1 14 40 5 1 34 43 1 1 43 46 0 1 54 51 8 1 74 57 2 1 95 14 29 ...

Page 29: ... 1 76 47 6 1 96 55 24 3 1 06 28 9 1 23 33 8 1 41 36 0 1 49 38 3 1 59 43 1 1 79 47 6 1 99 60 24 3 1 08 28 9 1 26 33 8 1 45 36 0 1 55 38 3 1 65 43 1 1 85 47 6 2 07 65 24 3 1 10 28 9 1 28 33 8 1 47 36 0 1 57 38 3 1 67 43 1 1 88 47 6 2 10 70 24 3 1 13 28 9 1 31 33 8 1 50 36 0 1 62 38 3 1 72 43 1 1 94 47 6 2 17 75 24 3 1 14 28 9 1 33 33 8 1 54 36 0 1 64 38 3 1 75 43 1 1 97 47 6 2 21 80 24 3 1 17 28 9 1...

Page 30: ...7 8 10 35 78 9 10 37 78 6 10 38 122 61 0 5 56 62 3 7 12 62 0 7 81 62 2 7 83 62 3 7 83 63 4 7 86 63 3 7 89 120 9 9 79 4 2 52 94 8 3 06 110 2 3 62 118 1 3 91 123 3 4 21 128 9 4 83 131 6 4 99 4 79 4 2 66 94 8 3 23 110 2 3 82 118 1 4 12 123 3 4 44 128 9 5 10 131 6 5 27 0 79 4 2 77 94 8 3 36 110 2 3 98 118 1 4 29 123 3 4 62 128 9 5 30 131 6 5 48 5 79 4 2 87 94 8 3 48 110 2 4 12 118 1 4 44 123 3 4 79 12...

Page 31: ...7 20 61 4 7 21 62 8 7 23 62 6 7 26 100 9 9 64 7 2 04 77 1 2 47 89 6 2 92 96 0 3 19 105 5 3 45 118 3 3 98 124 9 4 14 4 64 7 2 16 77 1 2 60 89 6 3 08 96 0 3 36 105 5 3 64 118 3 4 20 124 9 4 37 0 64 7 2 24 77 1 2 71 89 6 3 21 96 0 3 50 105 5 3 78 118 3 4 36 124 9 4 55 5 64 7 2 33 77 1 2 81 89 6 3 33 96 0 3 62 105 5 3 92 118 3 4 52 124 9 4 71 10 64 7 2 39 77 1 2 89 89 6 3 42 96 0 3 73 105 5 4 03 118 3...

Page 32: ... 57 1 6 14 58 1 6 44 58 7 6 59 58 6 6 69 80 9 9 51 9 1 58 61 7 1 90 72 0 2 21 76 7 2 40 81 9 2 59 91 7 2 95 101 6 3 29 4 51 9 1 67 61 7 2 01 72 0 2 33 76 7 2 53 81 9 2 73 91 7 3 12 101 6 3 47 0 51 9 1 73 61 7 2 09 72 0 2 43 76 7 2 63 81 9 2 84 91 7 3 24 101 6 3 61 5 51 9 1 80 61 7 2 16 72 0 2 51 76 7 2 73 81 9 2 94 91 7 3 36 101 6 3 74 10 51 9 1 85 61 7 2 23 72 0 2 59 76 7 2 81 81 9 3 03 91 7 3 46...

Page 33: ...53 6 5 16 60 9 9 39 0 1 21 46 3 1 40 54 0 1 65 57 4 1 76 61 3 1 90 69 0 2 15 76 3 2 40 4 39 0 1 28 46 3 1 48 54 0 1 74 57 4 1 86 61 3 2 00 69 0 2 26 76 3 2 53 0 39 0 1 33 46 3 1 54 54 0 1 81 57 4 1 93 61 3 2 08 69 0 2 35 76 3 2 63 5 39 0 1 38 46 3 1 60 54 0 1 87 57 4 2 00 61 3 2 16 69 0 2 44 76 3 2 73 10 39 0 1 41 46 3 1 64 54 0 1 93 57 4 2 06 61 3 2 22 69 0 2 51 76 3 2 81 14 39 0 1 47 46 3 1 70 5...

Page 34: ...2 12 51 0 2 27 57 4 2 54 63 4 2 82 55 32 4 1 53 38 6 1 77 45 0 2 03 48 0 2 15 51 0 2 30 57 4 2 59 63 4 2 87 60 32 4 1 56 38 6 1 82 45 0 2 09 48 0 2 23 51 0 2 38 57 4 2 67 63 4 2 98 65 32 4 1 58 38 6 1 85 45 0 2 12 48 0 2 27 51 0 2 41 57 4 2 71 63 4 3 03 70 32 4 1 63 38 6 1 88 45 0 2 17 48 0 2 33 51 0 2 47 57 4 2 79 63 4 3 13 75 32 4 1 64 38 6 1 92 45 0 2 22 48 0 2 36 51 0 2 52 57 4 2 84 63 4 3 19 ...

Page 35: ...69 5 5 91 68 5 6 34 67 8 6 72 67 1 7 11 66 6 7 35 66 2 7 40 65 8 7 48 0 0 0 4 76 1 6 10 75 4 6 39 74 3 6 83 73 5 7 21 72 8 7 59 72 2 7 83 71 8 7 89 71 4 7 96 5 0 4 5 83 5 6 71 82 7 7 00 81 5 7 43 80 7 7 81 79 9 8 20 79 2 8 44 78 8 8 49 78 3 8 57 10 0 9 0 90 9 7 31 90 1 7 60 88 8 8 04 87 9 8 42 87 0 8 80 86 3 9 05 85 8 9 10 85 3 9 17 15 0 14 0 98 2 7 91 97 2 8 20 95 9 8 63 94 9 9 01 93 9 9 40 91 6 ...

Page 36: ... 9 42 4 0 4 4 67 7 6 78 67 4 7 05 67 0 7 47 66 6 8 02 66 2 8 58 65 7 8 80 65 4 8 82 64 9 8 83 0 0 0 4 73 4 7 26 73 1 7 54 72 7 7 95 72 2 8 39 71 6 8 83 68 9 8 80 65 9 8 77 61 9 8 72 5 0 4 5 81 3 7 87 80 3 8 14 78 8 8 56 76 5 8 68 74 2 8 80 69 8 8 67 65 6 8 44 59 9 8 13 10 0 9 0 88 8 8 70 85 8 8 75 81 3 8 82 77 8 8 79 74 2 8 76 69 8 8 35 65 6 7 97 59 9 7 47 15 0 14 0 89 8 8 82 86 4 8 80 81 3 8 77 7...

Page 37: ...6 76 56 3 6 90 53 3 7 12 50 8 7 11 48 3 7 11 45 5 7 00 43 0 6 79 39 6 6 51 0 0 0 4 58 3 7 16 56 3 7 15 53 3 7 14 50 8 7 05 48 3 6 95 45 5 6 71 43 0 6 48 39 6 6 17 5 0 4 5 58 3 7 14 56 3 7 13 53 3 7 11 50 8 6 84 48 3 6 56 45 5 6 32 43 0 6 09 39 6 5 79 10 0 9 0 58 3 7 26 56 3 7 10 53 3 6 86 50 8 6 52 48 3 6 17 45 5 5 93 43 0 5 71 39 6 5 41 15 0 14 0 58 3 6 92 56 3 6 72 53 3 6 43 50 8 6 11 48 3 5 79 ...

Page 38: ... 7 11 52 0 0 0 4 101 5 9 40 100 5 9 85 99 1 10 52 98 1 11 11 97 1 11 70 96 3 12 07 95 8 12 16 95 1 12 27 5 0 4 5 111 3 10 33 110 3 10 78 108 7 11 45 107 6 12 04 106 5 12 63 105 7 13 01 105 1 13 09 104 4 13 20 10 0 9 0 121 2 11 27 120 1 11 71 118 4 12 39 117 2 12 98 116 0 13 56 115 0 13 94 114 5 14 02 113 7 14 14 15 0 14 0 130 9 12 18 129 7 12 63 127 8 13 30 126 5 13 89 125 3 14 48 122 1 14 79 116 ...

Page 39: ... 87 89 3 11 51 88 8 12 36 88 3 13 22 87 6 13 57 87 1 13 58 86 5 13 61 0 0 0 4 97 9 11 19 97 5 11 61 96 9 12 25 96 2 12 93 95 5 13 61 91 9 13 56 87 9 13 51 82 5 13 44 5 0 4 5 108 4 12 12 107 0 12 55 105 0 13 19 102 0 13 37 98 9 13 55 93 1 13 36 87 4 13 00 79 9 12 52 10 0 9 0 118 4 13 41 114 4 13 48 108 4 13 59 103 7 13 55 98 9 13 50 93 1 12 86 87 4 12 29 79 9 11 52 15 0 14 0 119 8 13 59 115 2 13 56...

Page 40: ...57 3 10 93 52 9 10 90 4 0 4 4 77 7 10 41 75 1 10 64 71 1 10 97 67 7 10 96 64 4 10 96 60 6 10 79 57 3 10 46 52 9 10 03 0 0 0 4 77 7 11 04 75 1 11 02 71 1 11 00 67 7 10 86 64 4 10 71 60 6 10 33 57 3 9 98 52 9 9 51 5 0 4 5 77 7 11 00 75 1 10 98 71 1 10 96 67 7 10 53 64 4 10 11 60 6 9 73 57 3 9 39 52 9 8 93 10 0 9 0 77 7 11 19 75 1 10 94 71 1 10 57 67 7 10 04 64 4 9 51 60 6 9 14 57 3 8 80 52 9 8 34 15...

Page 41: ...3 0 98 0 6 66 94 4 6 52 89 0 6 32 85 0 6 13 81 0 5 94 76 2 5 60 71 8 5 42 65 8 5 18 50 0 46 0 98 0 6 41 94 4 6 28 89 0 6 09 85 0 5 90 81 0 5 72 76 2 5 39 71 8 5 22 65 8 4 99 55 0 51 0 98 0 6 02 94 4 5 90 89 0 5 71 85 0 5 54 81 0 5 37 76 2 5 06 71 8 4 90 65 8 4 68 60 0 56 0 98 0 5 60 94 4 5 48 89 0 5 31 85 0 5 15 81 0 4 99 76 2 4 71 71 8 4 55 65 8 4 35 Table 5 ARUN072BSS5 Maximum Heating Capacity T...

Page 42: ...Defrost Correction Factor on page 43 Elevation Correction Factors on page 43 CORRECTION FACTORS ...

Page 43: ...the equivalent length of the liquid line from the outdoor unit to the farthest indoor unit Also determine the elevation difference of farthest indoor unit above or below the outdoor unit Find corresponding cooling capacity correction factor in the table below Multiply the cooling correction factor by standard cooling capacity The resultant is the NET cooling capacity The correction factors shown b...

Page 44: ...ELECTRICAL CONNECTIONS Electrical Connections on page 45 Generation 4 Indoor Units on page 47 ...

Page 45: ... section for dimensional drawings wiring and refrigerant piping diagrams for the exact locations of the piping and electrical connection locations DANGER Figure 15 Multi V S Three Phase Power Wiring Communications Cable Connections Example R L1 Switch Fused Disconnect L N Communication cable 2 wire Cable Power cable 3 wire Cable Communication cable 3 wire Cable Power cable 2 wire Cable Power cable...

Page 46: ...at Selector Switch Provides manual override of microprocessor selected mode of operation heating cooling or fan only Central Control and Building Automation System Communication Bus Connection Connect LG Central Controller and BMS gateway products Indoor Unit s Communication Bus Connection Not used with Multi V S Three Phase 12V Power source for selected controllers Ground ODU B DRY 2 DRY1 Cen A C...

Page 47: ...the pipes There LV ULVN RI UH HOHFWULF VKRFN H SORVLRQ SK VLFDO LQMXU RU GHDWK QVWDOO D PDLQ VKXWRII VZLWFK WKDW LQWHUUXSWV DOO SRZHU VRXUFHV VLPXOWDQHRXVO 7KHUH LV ULVN RI UH HOHFWULF VKRFN H SORVLRQ SK VLFDO LQMXU RU GHDWK Communication cable between outdoor unit to indoor units must be 18 AWG 2 conductor twisted stranded shielded Ensure the commu nication cable shield is properly grounded to th...

Page 48: ...ITATIONS AND PLACEMENT CONSIDERATIONS Piping Limitations on page 49 Selecting the Best Location for Outdoor Unit s on page 51 2XWGRRU 8QLW OHDUDQFH 5HTXLUHPHQWV RQ SDJH Installing Outdoor Units Indoors on page 55 ...

Page 49: ...9 Longest pipe length after first branch 131 Longest pipe length 492 actual 574 equiv Max Total Equivalent Piping Length 984 Table 9 Piping Limitations for Multi V S Three Phase Heat Pump Operation See next page PIPING LIMITATIONS The following pages present Multi V S Three Phase piping limitations and are for illustrative purposes only Designers MUST use LATS when designing LG VRF systems 1 Assum...

Page 50: ...h Pipe B Diameters from Y branch to Y branch Header Vapor Pipe Main Pipe Liquid Pipe Branch Piping IDU IDU IDU IDU C IDU IDU IDU C C C C C C Multi V S Unit A B Branch Piping B Header Header Branch Piping B Indoor Unit Capacity1 Liquid pipe inches OD Vapor pipe inches OD 1 4Ø 1 2Ø 3 8Ø 5 8Ø 3 8Ø 3 4Ø 3 8Ø 7 8Ø Table 12 Indoor Unit Connecting Pipe from Branch C 1 9 600 24 200 Btu h 4 way 3 feet x 3 ...

Page 51: ...ation Where operating sound from the unit will disturb inhabitants of surrounding buildings Where the unit will be exposed to direct strong winds Where the discharge of one outdoor unit will blow into the inlet side of an adjacent unit when installing multiple outdoor units Planning for Snow and Ice To ensure the outdoor unit operates properly certain measures are required in locations where there...

Page 52: ...n winds Select a location with good drainage Periodically clean dust or salt particles off of the heat exchanger with water The system will take longer to provide heat or heating performance will be reduced in winter if the outdoor unit is installed Planning for Snow and Ice continued Tie Downs and Wind Restraints The strength of Multi V frames is adequate to be used with field provided wind restr...

Page 53: ...to face Do not place the unit where animals and or plants will be in the path of the warm air or where the warm air and or noise will disturb neighbors Installation clearances must comply with local building codes All figures not to scale Never place multiple units facing back to front or front to back as shown immediately below left or high and low system pressure problems will occur Single Unit ...

Page 54: ...ont Walls with Building Overhang Airflow Airflow Max 20 L H Min 50 Min 40 Min 4 Min 14 Min 59 Min 14 Min 4 Min 40 Min 28 Max 20 Min 4 Min 40 Min 14 Min 4 L H Min 59 Min 14 Min 4 Min 40 Max 20 Side by Side High Front Wall with Building Overhang and No Side or Rear Walls Side by Side High Rear Wall and Low Front Wall with No Side Walls Side by Side High Front and Rear Walls with No Side Walls Side b...

Page 55: ...ing the outdoor unit to compensate for loss of capacity at low ambient temperatures Can also curtail the need to provide inefficient redundant zone heating devices such as wall fin radiators and second stage ancillary heating devices Design Considerations Include Enclosure types and elements such as louvers rain hoods dampers and controls heating methods and sizing of heating devices Heating strat...

Page 56: ...ther conditions capital costs life cycle energy consumption and limitations set forth by local building codes For more detailed information on how to design indoor spaces for LG Multi V outdoor units see the white paper Air Source VRF Mechanical Room Design Considerations for Outdoor Unit Placement in Enclosures on www lghvac com RU GHWDLOHG SODFHPHQW FRQVLGHUDWLRQV DQG LQVWDOODWLRQ UHTXLUHPHQWV I...

Page 57: ...ver Diagram Minimum Outdoor Unit Clearances Air Intake Area I DQ DLU JXLGH ORXYHUV DUH LQVWDOOHG HQVXUH WKHUH LV DUH VXI FLHQW RXW door unit clearances air intake area If the clearances air intake area do does not follow manufacturer s guidelines it can cause a reduction LQ RXWGRRU XQLW HI FLHQF DQG RU SURGXFW PDOIXQFWLRQ QRQRSHUDWLRQ Figure 33 Open Rate by Louver Radian Formula Air Guide Duct Lou...

Page 58: ...ata performance general best practice and building ventilation manuals as well as white papers catalogs LATS software programs and more log in to www lghvac com LG Electronics U S A Inc Air Conditioning Technologies 4300 North Point Parkway Alpharetta Georgia 30022 www lghvac com New Issue EM_MultiV_S_3Phase_OutdoorUnits_08_21 ...

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