LG LH247HV Engineering Manual Download Page 18

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outdoor unit reFrigerant FloW diagram

Luu247HV and Luu367HV

cooling / Heating Mode

Refrigerant Flow

Cooling

Heating

High Pressure

Sensor

4 way

36k/42k model only

Valve

Discharge

Temperature

Thermistor

Suction

Temperature

Fusible

Plug

Thermistor

Accumulator

Inverter

Compressor

Strainer

Condenser Out

Temperature

Thermistor

Outdoor Ambient Air

Temperature

Thermistor

Ø3/8

Flare Connection

Ø5/8

Flare Connection

Condensing

Temperature

Thermistor

Electronic

Expansion Valve

Liquid Side

Piping

Vapor Side

Piping

SVC

Figure 10: LUU247HV and LUU367HV Refrigerant Flow Diagram.

Description (Based on Cooling Mode)

PCB Connector

LUU247HV

LUU367HV

Suction Temperature Thermistor

CN-TH3

Discharge Temperature Thermistor

Condenser Outlet Temperature Thermistor

CN-TH2

Outdoor Ambient Air Temperature Thermistor

Condenser Inlet Temperature Thermistor

CN-TH4

Pressure Sensor

CN-TH1

P-SENSOR(H)

Table 7: Ceiling-Concealed Duct (High Static) Outdoor Unit Thermistor Details.

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

18 | duct (HIgH StatIc)

Ceiling-Concealed Duct (High Static) System Engineering Manual

Summary of Contents for LH247HV

Page 1: ...Single Zone Ceiling Concealed Duct High Static System Engineering Manual Single Zone Ceiling Concealed Duct High Static Heat Pump Systems 2 and 3 Tons LH247HV 24 000 Btu h LH367HV 36 000 Btu h ...

Page 2: ... 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 This document as well as all reports illustrations data information and other materials are the property of LG Electronics U S A Inc ...

Page 3: ...ment Considerations 41 48 Refrigerant Piping Design Layout Best Practices 49 60 Design Guideline Summary 50 Selecting Field Supplied Copper Tubing 51 52 Refrigerant Piping System Layout 53 57 Piping Insulation 58 59 Condensate Drain Piping 59 60 Electrical and Mechanical Specifications 61 67 Wiring Connections 62 65 Mechanical Specifications 66 67 Acronyms 68 TABLE OF sYMBOLS This symbol indicates...

Page 4: ...dow 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 Technology LG DFS air source systems offer zoning without the need for zone damper systems The advanced controls of the ceil...

Page 5: ...V High 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...

Page 6: ...s to control their environmental condition providing individualized control of the set point temperature and allowing occupants to condition only the occupied zones Inverter variable speed compressors are also measurably quieter and consume less energy than those in conventional air Benefits of Ceiling Concealed Duct High Static Systems Inverter technology Available in 24 000 and 36 000 Btu h capa...

Page 7: ...and Benefits on page 8 General Data on page 9 Electrical Data on page 10 Dimensions on page 11 Acoustic Data on page 15 Refrigerant Flow Diagrams on page 18 Wiring Diagrams on page 20 Accessories on page 24 Product data ...

Page 8: ... compressor efficiency which reduces power consumption and monthly utility bills This inverter technology allows the LG ceiling concealed duct high static outdoor unit to vary the compressor motor shaft speed and deliver an appropriate amount of cooling to the indoor unit Occupants remain comfort able while utility costs are reduced Simplified Installation The LG ceiling concealed duct high static...

Page 9: ...Elevation Difference ft 98 Table 2 Ceiling Concealed Duct High Static System General Data General Data Specifications EEV Electronic Expansion Valve IDU Indoor Unit ODU outdoor Unit Power wiring is field supplied and must comply with the applicable local and national codes This unit comes with a dry helium charge This data is rated 0 ft above sea level with 24 6 ft of refrigerant line per indoor u...

Page 10: ...unbalance is 2 RLA Rated Load Amps MCA Minimum Circuit Ampacity Maximum Overcurrent Protection MOP is calculated as follows Largest motor FLA x 2 25 Sum of other motor FLA rounded down to the nearest standard fuse size Table 3 Electrical Data Electrical Data Due to our policy of continuous product innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cli...

Page 11: ...hange 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 lghvac com Outdoor Unit ODU LUU247HV Duct High Static 11 Product Data 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...

Page 12: ...hout 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 lghvac com Outdoor Unit ODU LUU367HV 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 12 Duct High Static Ce...

Page 13: ...cifications 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 lghvac com Indoor Unit IDU LHN247HV LHN247HV Duct High Static 13 Product Data 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 ...

Page 14: ...hout 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 lghvac com Indoor Unit IDU LHN367HV 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 14 Duct High Static Cei...

Page 15: ...7 Ceiling Concealed Duct High Static Outdoor Unit Sound Pressure Level Diagrams LUU187HV LUU247HV LUU367HV LUU427HV 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 Approximate Hearing Threshold Octave Band...

Page 16: ...r flow rate value with the temperature up down button External Static Pressure value range 0 255 External Static Pressure value will be displayed at the upper right hand section of the screen 3 Press the button to save set the chosen External Static Pressure value 4 To deactivate the controller set mode press the and buttons simultaneously for three 3 seconds If there is no input no buttons presse...

Page 17: ...ic chamber per ISO Standard 3745 4 9 ft 6 6 ft 3 3 ft DUCT DISCHARGE SUCTION DUCT Octave Band Sound Pressure Level 0dB 20μPa 10 20 30 40 50 60 70 80 Approximate Hearing Threshold Octave Band Center Frequency Hz Octave Band Sound Pressure Level 0dB 20μPa 10 20 30 40 50 60 70 80 63 125 250 500 1000 2000 4000 8000 Octave Band Center Frequency Hz 63 125 250 500 1000 2000 4000 8000 NC 15 NC 20 NC 25 NC...

Page 18: ...LUU247HV and LUU367HV Refrigerant Flow Diagram Description Based on Cooling Mode PCB Connector LUU247HV LUU367HV Suction Temperature Thermistor CN TH3 CN TH3 Discharge Temperature Thermistor Condenser Outlet Temperature Thermistor CN TH2 CN TH2 Outdoor Ambient Air Temperature Thermistor Condenser Inlet Temperature Thermistor CN TH4 CN TH4 Pressure Sensor CN TH1 P SENSOR H Table 7 Ceiling Concealed...

Page 19: ... Inlet Temperature Thermistor CN PIPE IN Evaporator Outlet Temperature Thermistor CN PIPE OUT LHN247HV and LHN367HV Cooling Heating Mode Sirocco Fan Heat Exchanger Vapor Pipe Connection Port Flare Connection Liquid Pipe Connection Port Flare Connection Cooling Heating M Evaporator Outlet Temperature Thermistor Evaporator Inlet Temperature Thermistor Indoor Air Temperature Thermistor Duct High Stat...

Page 20: ...iagram LUU247HV 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 20 Duct High Static Ceiling Concealed Duct High Static System Engineering Manual ...

Page 21: ...am Outdoor Unit Wiring Diagram LUU367HV Duct High Static 21 Product Data 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 22: ...Wiring Diagram 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 22 Duct High Static Ceiling Concealed Duct High Static System Engineering Manual ...

Page 23: ...ic LHN367HV Indoor Unit Wiring Diagram Duct High Static 23 Product Data 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 24: ...its Table 10 Summary Data Zone Controllers Before specifying or placing an order refer to the V Net Network Solutions Engineering Product Data Book and review the detailed technical data provided to fully understand the capabilities and limitations of these devices For information on controller capabilities refer to the Controls and Options Table on page 27 Zone Controllers Table 11 Summary Data Z...

Page 25: ... Save Run Status Error Status 2 2 Dry Contact Unit for Thermostat PQDSBNGCM1 ON OFF Thermo ON OFF Mode Fan Speed Run Status Error Status Enables the indoor unit to be controlled and monitored by a third party thermostat or controller PI 485 V net Control Integration Board PMNFP14A0 A1 Outdoor Unit Control integration to LG V net controls AC Smart Premium ACP BACnet LonWorks etc Digital Output DO K...

Page 26: ...work Solutions Engineering Product Data Book and review the detailed technical data provided to fully understand the capabilities and limitations of these devices For information on controller capabilities refer to the Controls and Options Table on page 27 Table 14 Summary Data Integration Solutions Connect to Outdoor Unit Through the PI 485 Board accessory sold separately Central Controller Name ...

Page 27: ...e o Unit option Accessories Functions Controls and Options Table 16 Ceiling Concealed Duct High Static Indoor Unit Accessories Overview Model No Description ZFBXBG01A High Efficiency Filter Box ZFBXD201A Dynamic V8 2VL Low Profile Air Cleaner ZPLMV201A Dynamic 2VL Air Cleaner Low Profile Return Air Plenum ZFBXD402A Dynamic V8 4VL Low Profile Air Cleaner ZPLMV402A Dynamic 4VL Air Cleaner Low Profil...

Page 28: ...sures Temperature sensors Four way reversing valve Outdoor fans showing status and speeds 2 Setting Converts metric values to imperial values 3 Making Data Recording of real time data to a separate file created to be stored on the user s computer 4 Loading Data Recorded data from a saved CSV file can be loaded to create an LGMV session 5 Electrical Data The lower half of main screen is changed to ...

Page 29: ... Cooling Capacity Data on page 30 Heating Capacity Data on page 32 PERFORMANCE DATA ...

Page 30: ...0 22 21 20 11 1 23 23 65 21 30 1 57 25 09 21 98 1 68 26 13 21 14 1 71 27 97 21 38 1 74 29 42 21 82 1 76 85 21 65 19 75 1 40 23 09 20 95 1 70 24 53 21 64 1 81 25 57 20 83 1 84 27 40 21 09 1 87 28 84 21 54 1 90 90 21 09 19 37 1 56 22 53 20 58 1 84 23 96 21 29 1 93 25 00 20 51 1 96 26 83 20 79 2 00 28 27 21 26 2 03 95 20 49 19 17 1 73 21 92 20 40 1 96 23 35 21 13 2 03 24 00 20 06 2 00 26 20 20 68 2 1...

Page 31: ...9 35 47 29 77 2 28 37 64 30 71 2 45 39 20 29 55 2 49 41 96 29 87 2 53 44 12 30 49 2 57 85 32 48 27 59 2 03 34 63 29 27 2 48 36 79 30 24 2 63 38 35 29 11 2 67 41 10 29 46 2 72 43 26 30 10 2 76 90 31 64 27 07 2 28 33 79 28 76 2 68 35 94 29 75 2 81 37 50 28 66 2 85 40 25 29 05 2 90 42 40 29 71 2 96 95 30 74 26 79 2 52 32 88 28 50 2 86 35 02 29 52 2 96 36 00 28 03 2 91 39 30 28 90 3 05 41 44 29 58 3 1...

Page 32: ... 79 20 44 2 87 20 19 25 84 2 59 25 02 2 67 24 21 2 76 23 75 2 81 23 38 2 85 22 49 2 93 25 23 29 74 2 67 28 86 2 75 27 86 2 86 27 33 2 91 26 91 2 96 25 89 3 04 30 28 33 65 2 77 32 61 2 86 31 49 2 95 30 91 3 02 30 45 3 07 29 33 3 14 35 32 37 55 2 87 36 36 2 97 35 12 3 05 34 49 3 12 33 98 3 18 32 76 3 25 40 36 39 47 2 95 38 36 3 05 37 14 3 14 36 49 3 21 35 98 3 26 34 68 3 34 45 41 41 86 3 06 40 86 3 ...

Page 33: ... Equipment Selection Procedure on page 34 Building Ventilation Design Guide on page 36 Placement Considerations on page 41 Application Guidelines ...

Page 34: ...acity table using design conditions The result is the NET cooling or heating capacity Refrigerant Line Length Derates For air cooled systems a capacity correction factor may have to be applied to account for the length of the system s refrigerant pipe Rate of change in capacity due to increased piping lengths is shown below Table 21 Cooling Capacity Coefficient Factor Equivalent Piping Length for ...

Page 35: ... 24 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 c...

Page 36: ... S A Inc takes no responsibility and offers no warranty expressed or implied of merchantability or fitness of purpose if this method fails to perform as stated or intended For a complete copy of ASHRAE Standard 62 1 and 62 2 refer to the American Standard of Heating and Air Conditioning Engineers ASHRAE website at www ashrae org Method 1 Natural Ventilation Non Ducted Unconditioned Outdoor Air Nat...

Page 37: ...er cooled nor heated before entering the building Advantages Outdoor air may be manually controlled by the occupant or auto matic controls may be installed 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 amo...

Page 38: ...levels of the occupied space Disadvantages Fan s will be required to push outdoor air to the indoor unit 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 thermisto...

Page 39: ...conditions Advantages Indoor unit capacity may not need to be increased because of outdoor air Fan 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 usi...

Page 40: ...ration of indoor unit the resulting untreated air will be readily noticed by the occupants The outdoor air unit may supply neutral air to the occupant space 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 throug...

Page 41: ...erable amounts of oil iron powder or flour are used The indoor unit should not be installed where sulfuric acid and flammable or corrosive gases are generated vented into or stored Avoid installing the indoor unit near high frequency generators or near any equipment that generates an electromagnetic field minimum 3 1 3 feet away Do not install the indoor unit near a doorway The indoor unit may be ...

Page 42: ...13 16 2 1 4 23 7 32 1 3 16 4 3 4 39 19 32 11 9 16 Table 25 Indoor Unit Bolt Location Dimensions Indoor Unit Placement Considerations 1 50 1 100 slope Hanger distance 3 3 49 2feet Hanger Bracket Maximum 27 9 16 inches Flexible drain hose Insulation Metal clamp Maximum 11 13 16inches Indoor Unit Drain System Drain piping must have downward gradient of at least 1 50 to 1 100 to prevent reverse flow s...

Page 43: ...stible gas may generate flow stagnate or leak Don t install the unit in a location where oil acidic solutions sprays or dust sulfur carbon other corrosive materials are present often used Install a fence to prevent vermin from crawling into the unit or unauthorized individuals from accessing it When deciding on a location to place the outdoor unit be sure to choose an area where run off from defro...

Page 44: ...d communication 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 26 Lightening Protection Diagram Table 26 Safety Zone Specifications Building Height feet 66 98 148 197 Protection Angle 55 45 3...

Page 45: ...Unit to the Platform Minimum 7 7 8 7 7 8 15 3 4 Minimum 24 13 32 Unit Inch Outdoor Unit Bolt Type Concrete Height Bolt Depth LUU247HV M10 J Minimum 7 7 8 inches Minimum 2 3 4 inches LUU367HV M10 J Minimum 2 3 4 inches Table 27 Outdoor Unit Foundation Specifications LUU367HV Outdoor Unit LUU247HV Outdoor Unit Bolting the Outdoor Unit to the Platform Bolting the Outdoor Unit to the Platform Procedur...

Page 46: ...rection Outdoor Unit Service Access and Allowable Clearances Appropriate airflow through the outdoor unit coil is critical for proper unit operation Include enough space for airflow and for service access If installing multiple outdoor units avoid placing the units where the discharge of one unit will blow into the inlet side of an adjacent unit No obstacles to air circulation around the unit keep...

Page 47: ...acles above and on the air discharge side Where there are obstacles on both suction and discharge sides discharge side obstacle is higher than the outdoor unit Where there are obstacles above and on both suction and discharge sides discharge side obstacle is higher than the outdoor unit Maximum 19 11 16 Minimum 11 13 16 Minimum 39 3 8 L H A Minimum 19 11 16 Minimum 11 13 16 Where there are obstacl...

Page 48: ... 39 3 8 Minimum 39 3 8 Maximum 19 11 16 Minimum 11 13 16 Where there are obstacles on both suction and discharge sides discharge side obstacle is lower than the outdoor unit Where there are obstacles above and on both suction and discharge sides discharge side obstacle is lower than the outdoor unit Minimum 19 11 16 Minimum 11 13 16 H Minimum 11 13 16 Minimum 78 3 4 Minimum 23 19 32 Minimum 39 3 8...

Page 49: ...mmary on page 50 Selecting Field Supplied Copper Tubing on page 51 Refrigerant Piping System Layout on page 53 Piping Insulation on page 58 Condensate Drain Piping on page 59 Refrigerant Piping Design Layout Best Practices ...

Page 50: ...tic refrigerant pipe system Refrigerant Piping Design Design Guideline Summary Table 30 Single Zone Ceiling Concealed Duct High Static Refrigerant Piping System Limitations System Model Name LH247HV LH367HV Pipe Length ELF Equivalent Length of Pipe Longest total equivalent piping length 164 feet 246 feet Distance between fittings and indoor or outdoor units 20 inches 20 inches Elevation All Elevat...

Page 51: ... stress failure The refrigerant pipe support system must be engineered to allow free expansion to occur When a segment of pipe is mounted between two fixed points provisions must be provided to allow pipe expansion to naturally occur The most common method is the inclusion of expansion Loop or U bends See Figure 33 on page 53 Each segment of pipe has a natural fixed point where no movement occurs ...

Page 52: ... 56 0 70 0 84 0 91 0 98 1 05 1 12 1 19 1 26 1 33 1 40 1 47 1 54 1 51 1 61 1 82 1 96 2 03 2 10 160 0 64 0 64 0 80 0 96 1 04 1 12 1 20 1 28 1 36 1 44 1 52 1 60 1 68 1 76 1 73 1 84 2 08 2 24 2 32 2 40 180 0 72 0 72 0 90 1 08 1 17 1 26 1 35 1 44 1 53 1 62 1 71 1 80 1 89 1 98 1 94 2 07 2 34 2 52 2 61 2 70 200 0 80 0 80 1 00 1 20 1 30 1 40 1 50 1 60 1 70 1 80 1 90 2 00 2 10 2 20 2 16 2 30 2 60 2 80 2 90...

Page 53: ...slope cannot exceed 10 up or down In line Refrigeration Components The designer and installer should verify the refrigerant piping system is free of traps sagging pipes sight glasses filter dryers solonoid valves tee fittings etc on the refrigerant piping system between the outdoor units and the indoor units The components may cause vapor to form in the liquid stream Over time dryers may deteriora...

Page 54: ... hangers should be used with shields between the hangers and insulation Field provided pipe supports should be designed to meet local codes If allowed by code use fiber straps or split ring hangers sus pended from the ceiling on all thread rods fiber straps or split ring hangers can be used as long as they do not compress the pipe in sulation Place a second layer of insulation over the pipe insula...

Page 55: ...iquid Piping 1 4 Thickness of Gas Piping Insulation 0 4 x 2 Thickness of Liquid Piping Insulation 0 4 x 2 Surplus 0 8 Sleeve diameter total 3 1 minimum Diameter of penetrations shall be determined by pipe diameter plus the thickness of the insulation Vapor Line Liquid Line Min 18 Gauge Communications Cable Pipe Sleeve Insulation Material Insulation Material Underground Refrigerant Piping Refrigera...

Page 56: ...onnection for a Single Zone System 1 Remove the connection cover from the unit by loosening the screws 2 Align the center of the refrigerant pipe and corresponding connection and tighten the flare nut by hand 3 Tighten the flare nut with a torque wrench until the wrench clicks See page 57 for guidelines for the torque amount to use Figure 44 Ceiling Concealed Duct High Static Refrigerant Piping Co...

Page 57: ...at sensitive control components from excessive heat with a wet rag or a heat barrier spray product Pressure reducing Valve Packless Valve Tape Nitrogen Pipe to be brazed Refrigerant Piping Figure 45 Refrigerant Pipe Brazing Keep the piping system free of contaminants and debris such copper burrs slag or carbon dust during installation Flare Connection Practices 1 Place a couple of drops of refrige...

Page 58: ...tion if necessary Check the fit of the insulation jacket after the header fitting and all run out pipes are installed Mark all pipes at the point where the insulation jacket ends Remove the jacket Install field provided insulation on the run out and main trunk pipes first Install the LG provided insulation plugs on the ends of all unused header ports Peel the adhesive glue protector slip from the ...

Page 59: ...r unit does not operate 2 When the humidity is high and there is no air flow in the location where the piping is installed The thickness of the above insulation material is based on heat conductivity of 0 61 Btu in h ft2 F Minimum Refrigerant Pipe Ethylene Propylene Diene Methylene EPDM Insulation Wall Thickness Requirements continued Indoor unit Or Outdoor unit Gradient of at least 1 50 1 100 Fig...

Page 60: ...g Trap Models with drain pump Models without drain pump Polyethylene insulation 10t PVC drain pipe Metal clamp Drain pan Thermal insulation bend area Flexible drain hose Thermal insulation drain pipe area Flexible hose Drain pump PVC elbow PVC Max 31 1 2 inches 11 13 16 inches or less Common drain pipe Figure 53 Properly Insulated Condensate Drain Piping Sharp crook Sharp bend Clamp connection Rev...

Page 61: ... Wiring Connections on page 62 Mechanical Specifications on page 66 Acronyms on page 68 Electrical and Mechanical Specifications ...

Page 62: ...switch or circuit breaker that interrupts the power source circuit breaker should be resistant to electromagnetic currents To avoid the possibility of explosion fire etc do not connect the ground wiring to gas or sewage pipes lightening rods and telephone wires Use clamps to prevent the wires from touching the piping Use ring terminals to attach the wiring Verify that all power wiring and communic...

Page 63: ... Power Wiring Figure 58 Close up of a Typical Ring Terminal Circuit Breaker Ground Wire Power Supply Outdoor unit Figure 59 Proper and Improper Power Wiring Connections Never apply line voltage power to the communications cable terminal block If contact is made the PCBs may be damaged Always include some allowance in the wiring length when terminating Provide some slack to facilitate removing the ...

Page 64: ...ommunication Cable 1 L1 2 L2 Terminal Block Indoor 3 Indoor Unit Power Wiring Connecting the Power Wiring Communications Cable to the Outdoor Unit LUU247HV Outdoor Unit Connections 1 Remove the control cover from the unit by loosening the screws 2 Take off the caps on the conduit panel 3 Connect both the power supply and low voltage lines to the corre sponding terminals on the terminal block 4 Be ...

Page 65: ... the power wiring and communications cable outside of the indoor unit 3 Connect each wire to its appropriate terminal on the indoor unit control board Ver ify that the color and terminal numbers from the outdoor unit wiring match the color and terminal numbers on the indoor unit 4 Secure the power wiring communications cable with the cable restraint 5 Screw the steel clamp to the inside of the con...

Page 66: ... heating Indoor Unit Operating ranges for indoor units of 57 F to 77 F WB for cooling 59 F to 81 F DB for heating Casing Frame Outdoor Unit The outdoor condensing unit case is constructed from pre coated metal PCM that has been tested in accordance with ASTM B 117 salt spray procedure for a minimum of 1 000 hours Case has a removable panel to allow access to major internal components and legs to s...

Page 67: ...is mounted on vibra tion attenuating rubber grommets Fan speed is controlled using a microprocessor based direct digital control algorithm The indoor fan has Low Med High and Auto settings for Cooling mode and has Low Med High and Auto settings for Heating mode The Auto setting adjusts the fan speed based on the difference between the controller set point and space temperature Air Filter Indoor Un...

Page 68: ...ximum Starting 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 out...

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Page 72: ... 11405 Old Roswell Road Alpharetta Georgia 30009 www lghvac com www lg dfs com DFS EM AM 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 ...

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