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LG LC098HV4 Engineering Manual Download Page 36

36   

Four-W

ay Ceiling Cassette System 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.

LCN187, 247, 367, 427HV

INDOOR UNIT WIRING DIAGRAM

Figure 30: Four-Way Ceiling Cassette LCN187, 247, 367, 427 HV Indoor Unit Wiring Diagram.

Summary of Contents for LC098HV4

Page 1: ...EM ENGINEERING MANUAL Single Zone Four Way Ceiling Cassette Heat Pump Systems 3 4 to 3 1 2 Tons LC187HV 18 000 Btu h LC188HV4 18 000 Btu h LC247HV 24 000 Btu h LC367HV 36 000 Btu h LC427HV 42 000 Btu h LC098HV4 9 000 Btu h LC128HV4 12 000 Btu h ...

Page 2: ...TICE 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 For more technical materials such as submittals catalogs installation owner s and service manuals visit www lghvac com ...

Page 3: ... a smart alternative to both central HVAC and window mounted air conditioners These inverter heat pump systems are available in a variety of configurations to suit different cooling and heating situations Installation by a qualified HVAC contractor is safe and easy little to no duct work or sheet metal is required Inverter Systems LG Single Zone Four Way Ceiling Cassette air source systems offer t...

Page 4: ...roperty damage accidents only This symbol indicates an action that should not be performed Product Features and Benefits 8 Unit Nomenclature 9 Four Way Ceiling Cassette System Data 10 Four Way Ceiling Cassette Pairing Table 10 Specifications 11 Electrical Data 13 Outdoor Unit Dimensions 14 Indoor Unit Dimensions 17 Acoustic Data 21 Air Velocity and Temperature Distribution 23 Refrigerant Flow Diag...

Page 5: ...INTRODUCTION ...

Page 6: ...o 64 F WB for heating Operating ranges for 9 000 and 12 000 Btu h indoor units of 57 F to 77 F WB for cooling 59 F to 81 F DB for heating Indoor unit temperature setting range for 9 000 and 12 000 Btu h of 65 F to 86 F DB for cooling 61 F to 86 F WB for heating Operating ranges for 18 000 24 000 36 000 42 000 Btu h outdoor units of 5 F to 118 F DB for cooling 0 F to 64 F WB for heating Operating r...

Page 7: ...Nomenclature on page 9 General Data on page 10 Electrical Data on page 13 Dimensions on page 14 Acoustic Data on page 21 Air Velocity and Temperature Distribution on page 23 Refrigerant Flow Diagrams on page 27 Wiring Diagrams on page 31 Accessories on page 37 ...

Page 8: ...r unit Occupants remain comfortable while utility costs are reduced Simplified Installation The LG four way ceiling cassette system simplifies and reduces mechanical and control system design time The designer no longer has to be concerned with interconnecting chilled and condenser water piping complicated air distribution duct systems matching and selecting chillers towers pumps coils fans air ha...

Page 9: ... Efficiency Inverter VP Gallery YV Premier EV Mega V Standard Inverter T Thermostat Compatible Nominal Capacity Nominal cooling capacity in Btu h Frame Type A Art Cool S Standard C Four Way Ceiling Cassette D Ceiling Concealed Duct Low Static H Ceiling Concealed Duct High Static V Vertical Horizontal Air Handling L LG 09 9 000 12 12 000 18 18 000 24 24 000 30 30 000 36 36 000 42 42 000 54 54 000 L...

Page 10: ...rademark of LG Corp Outdoor Unit Model Indoor Unit Model Controller LUU097HV LUU127HV LCN098HV4 LCN128HV4 PQWRHQ0FDB LUU187HV LUU189HV LUU247HV LCN187HV LCN189HV4 LCN247HV PQWRHQ0FDB LUU367HV LUU427HV LCN367HV LCN427HV PQWRHQ0FDB The following table shows the available outdoor and indoor unit along with the factory provided controller Table 1 Four Way Ceiling Cassette System Pairing Table GENERAL ...

Page 11: ... 4 x 18 4 x 18 4 x 18 Compressor Type x Qty Twin Rotary x 1 Twin Rotary x 1 Twin Rotary x 1 Dehumidification Rate pts hr 1 6 2 47 3 3 Fan Indoor Unit Type x Qty Turbo x 1 Outdoor Unit Type x Qty Axial x 1 Motor Drive Brushless Digitally Controlled Direct Airflow Rate Indoor Unit H M L CFM 300 265 230 335 283 247 460 424 388 Outdoor Unit CFM 988 988 2 048 Table 2 Four Way Ceiling Cassette System Ge...

Page 12: ... Unit Type x Qty Propeller x 1 Propeller x 2 Motor Drive Brushless Digitally Controlled Direct Airflow Rate Indoor Unit Max H M L CFM 565 494 424 600 530 459 1 060 989 918 1 060 989 918 Outdoor Unit CFM 2 048 2 048 1 942 x 2 1 942 x 2 Piping Liquid in Connection Size Pipe Size 3 8 3 8 Vapor in Connection Size Pipe Size 5 8 5 8 Indoor Unit Condensate Drain O D I D in 1 1 4 1 Additional Refrigerant ...

Page 13: ...enser Fan Quantity Condenser Fan Motor FLA 3 4 LUU097HV 60 208 230 187 253 11 9 15 1 9 0 1 0 25 1 LUU127HV 12 3 1 1 2 LUU187HV 18 1 30 13 5 0 6 1 1 2 LUU189HV 20 30 13 5 1 6 2 LUU247HV 18 1 30 13 5 0 6 3 LUU367HV 24 5 40 18 0 2 0 6 x 2 3 1 2 LUU427HV Voltage tolerance is 10 Maximum allowable voltage unbalance is 2 RLA Rated Load Amps MCA Minimum Circuit Ampacity Maximum Overcurrent Protection MOP ...

Page 14: ...r Anchor Bolts M 13 32 3D View 1 3 16 11 11 32 31 32 2 9 16 17 11 16 15 16 21 15 32 30 5 16 2 23 32 5 8 2 3 32 5 21 32 6 2 3 4 5 7 1 17 11 16 15 16 4 25 32 Side View Valve Cover Removed 8 25 32 2 3 4 4 7 16 1 11 32 1 7 32 1 29 32 2 2 3 32 1 13 32 1 1 16 6 5 8 10 7 1 2 15 11 16 19 11 16 4 LD Ф25 32 Holes for drain connection 9 29 32 Intake air temperature sensor cover Handle Conduit Liquid pipe con...

Page 15: ... 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 OUTDOOR UNIT DIMENSIONS LUU187HV LUU189HV LUU247HV Figure 3 LUU187HV LUU189HV LUU247HV Outdoor Unit Dimensions ...

Page 16: ...ontinuous 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 OUTDOOR UNIT DIMENSIONS LUU367HV LUU427HV Figure 4 LUU367HV LUU427HV Outdoor Unit Dimensions ...

Page 17: ...novation 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 INDOOR UNIT DIMENSIONS LCN098HV4 LCN128HV4 Figure 5 LCN098HV4 LCN128HV4 Indoor Unit Dimensions ...

Page 18: ... of LG Corp Figure 6 LCN187HV LCN247HV Indoor Unit Dimensions INDOOR UNIT DIMENSIONS Job Name Location Tag Date PO No Ceiling Cassette Single Zone Page 3 of 3 DFS SB AC 006 US 013E23 For continual product development LG reserves the right to change specifications without notice LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG Life s Good is a registered trademark of LG Corp www ...

Page 19: ...tions 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 7 LCN188HV4 Indoor Unit Dimensions INDOOR UNIT DIMENSIONS LCN188HV4 Supply Air Vane Supply Air Vane Supply Air Vane Return Air Grille ...

Page 20: ... of LG Corp Figure 8 LCN367HV LCN427HV Indoor Unit Dimensions INDOOR UNIT DIMENSIONS Job Name Location Tag Date PO No Ceiling Cassette Single Zone Page 3 of 3 DFS SB AC 007 US 013E23 For continual product development LG reserves the right to change specifications without notice LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG Life s Good is a registered trademark of LG Corp www ...

Page 21: ...essure Level Measurement Location 3 3 ft 4 9 ft D Figure 10 Four Way Ceiling Cassette Outdoor Unit Sound Pressure Level Diagrams LUU187HV LUU247HV LU Octave Band Center Frequency Hz Octave Band Sound Pressure Level 0dB 20μPa Octave Band Sound Pressure Level 0dB 20μPa 10 20 30 40 50 60 70 80 63 125 250 500 1000 2000 4000 8000 NC 15 NC 20 NC 25 NC 30 NC 35 NC 40 NC 45 NC 50 NC 55 NC 60 NC 65 Approxi...

Page 22: ... 40 50 60 70 80 63 125 250 5 Approximate Hearing Threshold LCN187HV LCN247HV LCN367HV Figure 12 Four Way Ceiling Cassette Indoor Unit Sound Pressure Level Diagrams Table 6 Four Way Ceiling Cassette Indoor Unit Sound Pressure Levels dB A Model Sound Pressure Levels dB A H M L LCN098HV4 36 33 30 LCN128HV4 38 35 32 LCN187HV 38 36 34 LCN188HV4 41 39 36 LCN247HV 38 36 34 LCN367HV 46 44 43 LCN427HV 46 4...

Page 23: ...7ft 3ft 0ft 0ft 5ft 5ft 8ft 8ft 0ft 9ft 7ft 3ft 0ft 5ft 5ft 8ft 8ft 0ft 9ft 7ft 3ft 5ft 5ft 8ft 8ft 0ft 0ft 9ft 7ft 3ft 5ft 5ft 8ft 8ft 0ft 6 6 6 6 4 9 4 9 3 3 3 3 1 6 1 6 64 64 68 68 72 72 75 75 Discharge angle 50 Air velocity ft s Temperature F 6 6 6 6 4 9 4 9 3 3 3 3 1 6 1 6 91 91 86 86 81 81 75 75 70 70 Cooling Heating Discharge angle 40 Air velocity ft s Temperature F 9ft 7ft 3ft 0ft 0ft 5ft ...

Page 24: ... 3ft 0ft 9ft 7ft 3ft 0ft 13ft 10ft 10ft 13ft 7ft 7ft 3ft 3ft 0ft 9ft 7ft 3ft 0ft 13ft 10ft 10ft 13ft 7ft 7ft 3ft 3ft 0ft 6 6 6 6 4 6 4 6 3 3 3 3 Discharge angle 50 Air velocity ft s Temperature F 91 91 86 86 81 81 75 75 72 72 75 75 6 6 6 6 3 3 3 3 1 6 1 6 68 64 64 68 72 72 73 73 Cooling Heating Discharge angle 40 Air velocity ft s Temperature F 9ft 7ft 3ft 0ft 13ft 10ft 10ft 13ft 7ft 7ft 3ft 3ft 0...

Page 25: ... 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 AIR VELOCITY AND TEMPERATURE DISTRIBUTION Figure 17 LCN188HV4 Air Velocity and Temperature Distribution Charts ...

Page 26: ... 7ft 3ft 3ft 0ft 7ft 3ft 10ft 7ft 13ft 10 5ft 13ft 16ft 10ft 16ft 7ft 3ft 3ft 0ft 7ft 3ft 10ft 7ft 13ft 10 5ft 13ft 16ft 10ft 16ft 7ft 3ft 3ft 0ft 7ft 3ft 10ft 7ft 13ft 10 5ft 13ft 16ft 10ft 16ft 7ft 3ft 3ft 0ft 7ft 3ft 10ft 7ft 13ft 75 91 91 75 81 81 86 86 72 72 13 1 13 1 9 8 9 8 6 6 6 6 3 3 3 3 64 64 68 68 72 72 75 75 Cooling Heating Discharge angle 40 Air velocity ft s Temperature F 13 1 13 1 9...

Page 27: ...r CN C_PIPE Discharge Temperature Thermistor CN DISCHARGE Suction Temperature Thermistor CN SUCTION Condensing Temperature Thermistor CN MID High Pressure Sensor CN H_PRESSURE Electronic Expansion Valve CN EEV_A Table 7 LUU097 127HV Four Way Ceiling Concealed Outdoor Unit Thermistor Details Refrigerant Flow Cooling Heating M High Pressure Sensor 4 way Valve Discharge Temperature Thermistor Suction...

Page 28: ...HV4 3 8 1 4 Table 9 LCN098 128HV4 4 Way Ceiling Cassette Indoor Unit Refrigerant Pipe Connections Description Based on Cooling Mode PCB Connector Indoor Air Temperature Thermistor CN ROOM Evaporator Inlet Temperature Thermistor CN PIPE IN Evaporator Outlet Temperature Thermistor CN PIPE OUT Heat exchanger Gas pipe connection port flare connection Liquid pipe connection port flare connection Turbo ...

Page 29: ... Inlet Temperature Thermistor CN TH4 CN TH4 Pressure Sensor CN TH1 P SENSOR H Table 11 LUU187 427 Four Way Ceiling Concealed Outdoor Unit Thermistor Details OUTDOOR UNIT REFRIGERANT FLOW DIAGRAM Refrigerant Flow Cooling Heating M M High Pressure Sensor 4 way 36k 42k model only Valve Discharge Temperature Thermistor Suction Temperature Fusible Plug Thermistor Accumulator Inverter Compressor Straine...

Page 30: ... PIPE OUT Heat exchanger Gas pipe connection port flare connection Liquid pipe connection port flare connection Turbo fan Cooling Heating M Indoor Air Temperature Thermistor Evaporator Inlet Temperature Thermistor Evaporator Outlet Temperature Thermistor Figure 23 LCN187 188HV4 247HV 367HV 427HV Refrigerant Flow Diagram LCN187HV 188HV4 247HV 367HV 427HV Table 14 LCN187 188HV4 427HV 4 Way Cassette ...

Page 31: ...cations may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp OUTDOOR UNIT WIRING DIAGRAM LUU097HV and LUU127HV Figure 25 Four Way Ceiling Cassette LUU097HV and LUU127HV Outdoor Unit Wiring Diagram ...

Page 32: ...ovation 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 OUTDOOR UNIT WIRING DIAGRAM Figure 26 Four Way Ceiling Cassette LUU187HV and LUU247HV Outdoor Unit Wiring Diagram LUU187HV and LUU247HV ...

Page 33: ... 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 OUTDOOR UNIT WIRING DIAGRAM Figure 27 Four Way Ceiling Cassette LUU189HV Outdoor Unit Wiring Diagram LUU189HV ...

Page 34: ...ovation 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 OUTDOOR UNIT WIRING DIAGRAM LUU367HV and LUU427HV Figure 28 Four Way Ceiling Cassette LUU367HV and LUU427HV Outdoor Unit Wiring Diagram ...

Page 35: ...ecifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp LCN098 128 188HV4 INDOOR UNIT WIRING DIAGRAM Figure 29 Four Way Ceiling Cassette LCN098 128 188HV4 Indoor Unit Wiring Diagram ...

Page 36: ...novation 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 LCN187 247 367 427HV INDOOR UNIT WIRING DIAGRAM Figure 30 Four Way Ceiling Cassette LCN187 247 367 427 HV Indoor Unit Wiring Diagram ...

Page 37: ...r every additional indoor unit o Sleep mode Timer on off Weekly schedule Two thermistor control Controllers 7 Day programmable controller o3 Simple wired remote controller o3 Wireless LCD remote control Dry contact o3 Dry contact temperature setting o3 Central control LGAP Special Function Wi Fi5 o5 1 Branch location and static filter requirements Requires PTPKQ0 plasma kit 2 Primary washable filt...

Page 38: ...need for a separate interface device The main screen for LGMV allows the user to view the following real time data on one screen Additional information that can be gathered from the main screen 1 Graph Graphic shows the following Compressors showing actual speeds EEVs IDUs Low and high pressures Temperature sensors Four way reversing valve Outdoor fans showing status and speeds 2 Setting Converts ...

Page 39: ...uct 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 Cooling Capacity Data on page 40 Heating Capacity Data on page 47 PERFORMANCE DATA ...

Page 40: ...7 88 0 51 10 94 7 95 0 52 11 48 8 10 0 53 65 8 76 7 60 0 47 9 30 8 03 0 49 9 84 7 77 0 51 10 24 7 94 0 51 10 93 8 00 0 52 11 47 8 16 0 53 70 8 75 7 65 0 48 9 29 8 09 0 50 9 84 7 83 0 51 10 23 7 99 0 52 10 92 8 06 0 53 11 47 8 21 0 54 75 8 54 7 53 0 50 9 08 7 96 0 52 9 62 7 72 0 54 10 01 7 89 0 55 10 71 7 96 0 56 11 25 8 12 0 57 80 8 33 7 40 0 53 8 87 7 84 0 55 9 41 7 61 0 57 9 80 7 78 0 58 10 49 7...

Page 41: ... 0 69 14 16 9 26 0 70 65 10 80 8 69 0 63 11 47 9 18 0 65 12 14 8 89 0 68 12 62 9 07 0 68 13 48 9 15 0 70 14 15 9 32 0 71 70 10 79 8 75 0 64 11 46 9 24 0 66 12 13 8 95 0 69 12 61 9 14 0 69 13 47 9 22 0 71 14 14 9 39 0 72 75 10 53 8 61 0 67 11 20 9 10 0 70 11 87 8 82 0 72 12 35 9 02 0 73 13 20 9 10 0 74 13 87 9 28 0 76 80 10 27 8 46 0 71 10 94 8 96 0 73 11 60 8 70 0 76 12 09 8 89 0 77 12 94 8 99 0 7...

Page 42: ...67 18 61 16 55 0 91 19 70 17 03 0 98 20 49 16 36 1 00 21 88 16 50 1 00 22 96 16 81 1 00 70 17 50 15 77 0 69 18 58 16 65 0 93 19 67 17 14 1 01 20 46 16 47 1 02 21 84 16 60 1 02 22 93 16 92 1 02 75 17 08 15 51 0 73 18 16 16 40 0 96 19 24 16 90 1 03 20 03 16 25 1 05 21 41 16 40 1 06 22 50 16 73 1 07 80 16 66 15 24 0 77 17 74 16 14 0 99 18 82 16 66 1 06 19 60 16 02 1 08 20 98 16 20 1 10 22 06 16 53 1 ...

Page 43: ... 19 70 13 48 1 09 20 49 13 76 1 11 21 88 13 88 1 13 22 97 14 14 1 15 65 17 51 13 27 1 03 18 60 14 02 1 07 19 69 13 58 1 11 20 47 13 86 1 12 21 86 13 98 1 14 22 95 14 24 1 16 70 17 50 13 37 1 04 18 58 14 12 1 08 19 67 13 67 1 12 20 46 13 96 1 13 21 84 14 08 1 16 22 93 14 35 1 18 75 17 08 13 15 1 10 18 16 13 91 1 14 19 24 13 48 1 18 20 03 13 78 1 20 21 41 13 91 1 22 22 50 14 18 1 24 80 16 66 12 92 1...

Page 44: ...70 23 33 19 17 1 04 24 78 20 25 1 41 26 23 20 84 1 52 27 27 20 02 1 55 29 13 20 19 1 55 30 57 20 57 1 55 75 22 77 18 85 1 11 24 21 19 94 1 45 25 66 20 55 1 57 26 70 19 75 1 59 28 55 19 94 1 61 29 99 20 34 1 62 80 22 21 18 53 1 17 23 65 19 63 1 50 25 09 20 25 1 61 26 13 19 48 1 64 27 97 19 69 1 66 29 42 20 10 1 68 85 21 65 18 19 1 33 23 09 19 30 1 63 24 53 19 93 1 72 25 57 19 19 1 75 27 40 19 43 1 ...

Page 45: ...2 36 45 93 29 98 2 36 70 34 99 28 12 1 61 37 17 29 70 2 19 39 34 30 58 2 37 40 91 29 37 2 41 43 69 29 61 2 41 45 86 30 18 2 41 75 34 15 27 66 1 72 36 32 29 25 2 26 38 49 30 15 2 43 40 05 28 98 2 48 42 82 29 26 2 50 44 99 29 83 2 51 80 33 31 27 18 1 82 35 47 28 79 2 33 37 64 29 71 2 50 39 20 28 58 2 55 41 96 28 89 2 59 44 12 29 48 2 62 85 32 48 26 69 2 07 34 63 28 31 2 53 36 79 29 24 2 68 38 35 28 ...

Page 46: ...6 3 23 51 04 34 65 3 24 53 58 35 30 3 23 70 40 83 33 11 2 21 43 36 34 97 3 00 45 90 36 00 3 25 47 73 34 58 3 30 50 97 34 87 3 30 53 50 35 53 3 30 75 39 84 32 56 2 36 42 37 34 44 3 10 44 90 35 50 3 34 46 73 34 12 3 39 49 96 34 45 3 42 52 49 35 13 3 44 80 38 86 32 01 2 50 41 39 33 90 3 19 43 91 34 98 3 42 45 73 33 65 3 49 48 95 34 01 3 54 51 48 34 72 3 59 85 37 89 31 42 2 84 40 41 33 33 3 47 42 92 3...

Page 47: ... refrigerant piping length is accordance with standard length of each outdoor unit Nominal heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb DB and 60ºF wet bulb WB and outdoor ambient conditions of 47ºF dry bulb DB and 43ºF wet bulb WB Model No Nominal Capacity Btu h Outdoor Air Temp Indoor Air Temp F DB F DB F WB 61 64 68 70 72 75 TC PI TC PI TC PI TC PI TC PI T...

Page 48: ...ing capacity rating obtained with air entering the indoor unit at 70ºF dry bulb DB and 60ºF wet bulb WB and outdoor ambient conditions of 47ºF dry bulb DB and 43ºF wet bulb WB PERFORMANCE DATA Heating Capacity Tables Table 28 LC188HV4 System Heating Capacity Table TC Total Capacity kBtu h PI Power input KW Power input KW includes compressor and fan s Nominal capacity as rated 0 ft above sea level ...

Page 49: ...unit Nominal heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb DB and 60ºF wet bulb WB and outdoor ambient conditions of 47ºF dry bulb DB and 43ºF wet bulb WB Table 30 LC367HV System Heating Capacity Table Model No Nominal Capacity Btu h Outdoor Air Temp Indoor Air Temp F DB F DB F WB 61 64 68 70 72 75 TC PI TC PI TC PI TC PI TC PI TC PI LC367HV 36 000 0 0 4 19 98...

Page 50: ... 3 51 37 55 3 59 36 98 3 65 35 63 3 74 35 32 44 13 3 46 42 72 3 58 41 27 3 67 40 53 3 76 39 93 3 83 38 49 3 92 40 36 46 38 3 56 45 07 3 68 43 64 3 79 42 88 3 86 42 28 3 93 40 74 4 03 45 41 49 19 3 68 48 01 3 81 46 60 3 93 45 82 4 00 45 20 4 05 43 56 4 17 47 43 50 31 3 73 49 19 3 86 47 78 3 98 47 00 4 05 46 38 4 10 44 69 4 23 50 46 50 46 3 71 49 44 3 82 48 22 3 93 47 52 3 99 46 96 4 04 45 37 4 15 5...

Page 51: ... Equipment Selection Procedure on page 52 Building Ventilation Design Guide on page 54 Placement Considerations on page 59 APPLICATION GUIDELINES ...

Page 52: ...ng lengths is shown below Table 33 18 000 to 42 000 Btu h Capacity Cassette System Cooling and Heating Capacity Coefficient Factors Table 34 Equivalent Piping Length for Elbows Altitude Correction Factor The impact of air density must be considered on systems installed at a significant altitude above sea level therefore locally accepted alti tude correction factors must be applied Piping Length ft...

Page 53: ...30 Check the Indoor and Outdoor Unit Selection s Compare the corrected cooling and heating capacities to the load calculations Is each capacity sufficient for the zone it serves For each indoor unit the corrected capacity must be at least equal to the total of the cooling design load plus ventilation load if applicable for the space s served by the indoor unit For each indoor unit the corrected ca...

Page 54: ...nconditioned Outdoor Air Natural ventilation devices such as operable windows or louvers may be used to ventilate the building when local code permits The open area of a window or the free area of a louver must meet the minimum percentage of the net occupied floor area Advantages Occupants control the volume of the ventilation air manually Useful for historic buildings that have no ceiling space a...

Page 55: ...d to open close outdoor air dampers or to turn on off ventilation fans Useful for large open spaces like warehouses garages and workshops Outdoor air volume is a known quantity Air loads may be easier to calculate since fans will regulate the amount of outdoor air May be used with the full lineup of Duct Free Split system indoor units This may result in loss of building pressurization control incr...

Page 56: ...nit to overcome the additional static pressure Filter required to be added to the outdoor air duct Ducted and four way cassette models are the only indoor units that accept the connection of an outdoor air duct to the unit case In most cases in lieu of using the factory mounted return air thermistor on indoor units a remote wall temperature sensor or zone controller will be needed to provide an ac...

Page 57: ...an and filter system is centralized to the main outdoor air unit Disadvantages Ducted and four way cassette indoor units are the only models designed for direct connection of an outside air duct Ceiling space is required for ductwork Failure of outdoor air may impact indoor unit operation In lieu of using the factory mounted return air thermistor a remote wall temperature sensor or zone controller...

Page 58: ...e even when the Duct Free Split system indoor unit fan changes speed or cycles on and off DDOAS controls do not have to be interlocked with the Duct Free Split system In lieu of installing localized smaller outside air treatment equipment throughout the building this method centralizes the ventilation air source making service and filter changes easier and less disruptive for the building occupant...

Page 59: ...ed Ceiling High or dropped ceilings often found in commercial buildings and offices may cause a wide temperature differentiation To countermeasure Change the indoor unit mode selection to allow for higher ceilings see table Install an air circulator Set the air discharge outlet so that heated air flows in a downward direction Use a dual door system to protect the building gate or exit Ceiling Heig...

Page 60: ...ifications Indoor Unit Drain Connection 1 1 4 inch outside diameter Field Supplied Drain Piping Polyvinyl chloride piping with 1 inch inside diameter and pipe fittings 1 50 1 100 27 1 2 inches 9k 12k 31 1 2 inches 18k to 42k Figure 38 Indoor Unit Drain Piping Installing in an Area with High Humidity Levels If the environment is prone to humidity levels of 80 or more near the ocean lakes etc or whe...

Page 61: ... inhabitants of surrounding buildings Where the unit will not be exposed to direct strong winds Where there is enough strength to bear the weight of the unit Include space for drainage to ensure condensate flows properly out of the unit when it is in heating mode Avoid placing the outdoor unit in a low lying area where water could accumulate A location that allows for optimum air flow and is easil...

Page 62: ...ation cable should be installed five 5 feet away from lightning rod A high resistance ground system should be included to protect against induced lightning or indirect strike Ground Safe zone Lightning rod Protection Angle 25 55 1 5m 5 feet Lightning rod Figure 39 Lightning Protection Diagram Table 38 Safety Zone Specifications Building Height feet 66 98 148 197 Protection Angle 55 45 35 25 If the...

Page 63: ... inches LUU187HV LUU189HV LUU247HV M10 J Minimum 7 7 8 inches LUU367HV LUU427HV M10 J Table 39 Outdoor Unit Foundation Specifications Bolting the Outdoor Unit to the Platform Bolting the Outdoor Unit to the Platform Procedure When installing the outdoor unit onto a concrete or rigid mount use a bolt and nut 1 Ensure that the concrete platform will not degrade easily and has enough strength to bear...

Page 64: ...d 20 12 Minimum 14 4 Case 4 Standard 12 24 Minimum 4 8 79 Case 5 Standard 24 12 Minimum 10 4 Table 40 9 000 to 24 000 Outdoor Unit Service Access and Allowable Clearances Diagram Legend 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 If the outdoor unit is installed between standard and minimum clearanc...

Page 65: ...wind Minimum 19 1 16 Fence or obstacles Unit Inch Minimum 11 13 16 Ensure that the space at the back of the outdoor unit is a minimum of 11 13 16 inches and include a minimum of 23 5 8 inches at the right side of the unit for service If the outdoor unit discharge side faces a wall include a minimum of 19 11 16 inches between the outdoor unit and the wall Install the outdoor unit so that the discha...

Page 66: ... 13 16 Minimum 39 3 8 L H A 6 Table 41 Ratio among H A and L If a stand is necessary it should be contained not open frame to prevent the discharge air from short cycling L A L H 0 L 1 2 H 29 1 32 inches 1 2 H L 39 3 8 inches H L Set Stand as L H L Minimum 39 3 8 Minimum 39 3 8 Maximum 19 11 16 Minimum 11 13 16 Where there are obstacles above and on both suction and discharge sides discharge side ...

Page 67: ...GERANT PIPING DESIGN LAYOUT BEST PRACTICES Refrigerant Piping Design on page 68 Selecting Field Supplied Copper Tubing on page 69 Refrigerant Piping System Layout on page 70 Electrical Connections on page 77 ...

Page 68: ...V LC427HV Pipe Length ELF Equivalent Length of Pipe Longest total equivalent piping length 66 feet 164 feet 246 feet Shortest total equivalent piping length 6 6 6 6 6 6 Distance between fittings and indoor or outdoor units 20 inches 20 inches 20 inches No additional refrigerant 24 6 feet 24 6 feet 24 6 feet Elevation All Elevation Limitations are Measured in Actual Feet If outdoor unit is above in...

Page 69: ... 0 43 0 46 0 52 0 56 0 58 0 60 50 0 20 0 20 0 25 0 30 0 33 0 35 0 38 0 40 0 43 0 45 0 48 0 50 0 53 0 55 0 54 0 58 0 65 0 70 0 73 0 75 60 0 24 0 24 0 30 0 36 0 39 0 42 0 45 0 48 0 51 0 54 0 57 0 60 0 63 0 66 0 65 0 69 0 78 0 84 0 87 0 90 70 0 28 0 28 0 35 0 42 0 46 0 49 0 53 0 56 0 60 0 63 0 67 0 70 0 74 0 77 0 76 0 81 0 91 0 98 1 02 1 05 80 0 32 0 32 0 40 0 48 0 52 0 56 0 60 0 64 0 68 0 72 0 76 0 ...

Page 70: ...ired the entire system must be shut down and evacuated Position valves with a minimum distance of three 3 to six 6 inches of pipe on either side of the valve Valves must be easily accessible for service If necessary install drywall access doors or removable ceiling panels and position the valves to face the access door or ceiling panel open ing Mount valves with adequate space between them to allo...

Page 71: ...thin the confines of the support pipe 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 must meet local codes If local codes do not specify pipe support spacing pipe must be supported Maximum of five feet 5...

Page 72: ...tions Diameter of penetrations shall be determined by pipe diameter plus the thickness of the insulation Underground Refrigerant Piping Refrigerant pipe installed underground should be routed inside a vapor tight protective sleeve to prevent insulation deterioration and water infiltration Refrigerant pipe installed inside underground casing must be continuous without any joints Underground refrige...

Page 73: ...Connections 1 Remove the connection cover from the unit by loosening the screws 2 Align the center of the refrigerant pipe and corresponding connection 3 Place a couple of drops of refrigerant oil on the opening rim of the flare before assembling Ensure you do not add any contaminants Tighten the flare nut initially by hand 4 Finish tightening the flare nut with a torque wrench until the wrench cl...

Page 74: ...ions with dry nitrogen prior to assembly Do not use a saw to cut pipe use a tubing cutter De burr and clean all cuts before assembly Store pipe stock in a dry place Keep pipe capped and clean Use adapters to assemble different sizes of pipe Do not use flux soft solder or anti oxidant agents Use a 15 silver phosphorous copper brazing alloy to avoid overheating and produce good flow Protect isolatio...

Page 75: ... need to be increased based on ambient conditions and local codes All insulation joints shall be glued with no air gaps Insulation material shall fit snugly against the refrigeration pipe with no air space between it and the pipe Insulation passing through pipe hangers inside conduit and or sleeves must not be compressed Protect insulation inside hangers and supports with a second layer All pipe i...

Page 76: ...to about 50 F When high temperature and humidity air touch the outside surface of the drain pipe condensation may form To prevent condensation from forming install polyethylene insulation 1 4 to 7 16 inches thick Drain piping must be properly insulated to prevent damage to the indoor unit and the ceiling Test the condensate drain piping system for leaks 24 hours after installation is complete Use ...

Page 77: ...ck 4 Be sure to ground the unit by following local codes 5 Allow for enough length add several inches for each wiring 6 Secure the cable with the cord clamp 7 Secure conduit tubes with lock nuts 8 Reattach the control cover to the original position with the fasten ing screws Figure 66 LUU098 128HV Outdoor Unit Terminal Block Location Terminal block Over 0 2 Control cover Conduit panel Connecting c...

Page 78: ...es with sealant to prevent foreign parti cles from entering the indoor unit Figure 70 Power Wiring and Communications Cable Connection Access Using a Conduit 1 Remove the rubber stopper on the indoor unit Pass the power wiring communications cable through the conduit the conduit mounting plate and to through the control panel of the indoor unit 2 Connect the power wiring communications cable to th...

Page 79: ...des Separately wire the high and low voltage lines to avoid damage to unit Local codes may require field installed disconnect switches from outdoor unit to indoor unit Use heat proof electrical wire capable of withstanding temperatures up to 167 F to avoid damage to unit Always use a circuit breaker or time delay fuse when connecting electrical wiring to the unit Firmly connect the wire Loose wiri...

Page 80: ...TECHNICAL DATA Mechanical Specifications on page 81 Acronyms on page 83 ...

Page 81: ...es for outdoor units of 5 F to 118 F DB for cool ing 0 F to 64 F WB for heating Operating ranges for indoor units of 57 F to 77 F WB for cooling 59 F to 81 F DB for heating Indoor unit temperature setting range of 65 F to 86 F DB for cooling 61 F to 86 F WB for heating Casing Frame Outdoor Unit The outdoor condensing unit case is constructed from pre coated metal PCM that has been tested in accord...

Page 82: ...nd dynamically balanced The fan motor is brushless digitally controlled BLDC with permanently lubricated and sealed ball bearings The fan motor assembly is mounted on vibra tion attenuating rubber grommets Fan speed is controlled using a microprocessor based direct digital control algorithm that provides pre programmed field selectable fixed or auto fan speeds in the Heating and Cooling modes The ...

Page 83: ...ting Current BUS Binary Unit System NC Noise Criterion regarding Sound Pressure Levels CFM Cubic Feet per Minute New Construction LEED Related DB Dry Bulb Normally Closed dB A Decibels with A frequency weighting NEC National Electrical Code DDOAS Decoupled Dedicated Outdoor Air System No Number DI Digital Input ODU Outdoor Unit DFS Duct Free Split PCB Printed Circuit Board DO Digital output PCM Pr...

Page 84: ... EM AC 001 US_014D02 20001747 ISO 9001 2008 LG ELECTRONICS INC 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 dfs com ...

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