Home

LG_Series_IV_ODU-AirCooled_InstallationManual-Part2

Contents

1. Figure 61 Connecting Communication Cables to Outdoor Figure 62 Outdoor Unit to Indoor Unit Communications Cable Termination Detail Unit Communication Terminals DEE Indoor and d eat SE de K K ommunication Cable d jq D Multi Frame SODUB SODUA IDUB JIDUA CEN B CEN A DRY 1 DRY 2 GND 12V ODU System DLO OOSIPIOIPIVI Communication Cable Between Master Outdoor Unit Heat Recovery Units Heat Recovery Systems Only and Indoor Units Ye L L1 1 L1 2 L2 3A 4 B 1 L1 2 L2 3 L1 4 L2 5 A 6 B TR TQ Cassette Frames and TM TN Be Cassette For Heat Recovery Systems Only All Other Indoor Unit Styles Frames Only Communication Cables Between Master and Slave Outdoor Units Multi Frame Systems Only Figure 63 Power Wiring Termination Detail Field Provided 18 Gauge Stranded Two core Cable aster Outdoor Unit Slavel Outdoor Unit Slave2 Outdoor Unit Shielded e Insulation material as recommended by local code A M e The terminal tagged GND on the outdoor unit main PCB is notan earth ground t
2. Setting up the Heat Recovery Unit Figure 70 Heat Recovery Unit PCB Dip Switches Only For Heat Recovery Systems hab tousg General No veoh Each heat recovery unit will have a unique address assign so the outdoor unit will be able distinguish it from other heat recovery keen units The unique address is assigned by adjusting the rotary dials on the heat recovery unit printed circuit board PCB Upon completion of the heat recovery unit address the heat recov J ery unit operating parameters will be set by adjusting the positions aie Cc SES swo DIP Switches on SWO1M SW02M a Switch for addressing HR unit SWDIM No 1 heating vaia LED red Procedure Km ae o V SWOIMISWO3M ISWO4M Before beginning the physical process of assigning heat recovery OPS Runining SWEM den Gwch tr manuel vae addresses map out the address assignments using a copy of the LATS tree mode diagram Guidelines 1 Addresses must be sequential and addresses cannot be skipped 2 Assign the lowest address to the heat recovery unit that has the largest capacity indoor unit connected to port number 1 If the capacity of all indoor units connected to port number 1 of each heat recovery unit is the same assign address 0 to the heat recovery unit farthest away from the outdoor unit Assign the next address to the next farthest away and so on until all heat recovery units have an address The heat recovery unit with the highest address should be
3. e Suction temperature version e Inverter compressor discharge temperature Software version IDU fan speed Upper outdoor coil pipe temperature Installer name IDU EEV position Lower outdoor coil pipe temperature Model number IDU room temperature Liquid line pipe temperature Site name IDU inlet pipe temperature Subcooler inlet temperature Total number of connected IDUs IDU outlet pipe temperature Subcooler outlet temperature Communication indicator IDU error code e Four way reversing valve operation e IDU capacity indicator light IDU operating mode Additional screens can be accessed by tabs on the main screen Figure 73 MV Cycleview Additional screens include the following 1 Cycleview Graphic of internal components including e Compressors showing actual speeds e EEN IDUS e Temperature and pressure sensors e Four way reversing valve 2 Graph Full screen graph of actual high and low pressures and high and low pressure limits A sliding bar enables user to go back in time and view data 3 Control FTN Enables user to turn on IDUs in 1 8 F increments 4 Useful Tab e Unit Conversion Converts metric values to imperial values A Note Images on these pages are examples of LGMV screenshots Actual images may differ depending on the version of the software and the units installed LG Due to our policy of continuous product innovation some specifications may change without notificat
4. Due to our policy of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V REFRIGERANT CHARGE WORKSHEET ie A M e The system will stop operation due to excessive or insufficient refrigerant therefore always charge the unit properly When servicing always refer to any notes about system piping length and additional refrigerant amounts System Refrigerant Charge Calculator Ibs System Tag or ID Line Description Chassisl D Size Quantity CF Ref _ Total bel Linear feet of 1 4 liquid line tubing ae eee ERR 2 Linearfeetof 3 8 liquid line ung J TH 3 Linearfeetof 1 2 liquid line tubing I 0o 4 Linearfeetof 5 8 liquid line tubin o o S o o o o S S one S 5 Linearfeetof3 4 liquidlinetubing E 6 Linear feet of 7 8 liquid line tubing fr f Linear feet of 1 liquid line tubing 8 Wall Mounted ArtCool Mirror CEC SE f ktis 9 Wall Mounted Art Cool Mirror pap 18K to 24K 040 22 High Static Ducted o DR O S 48K to 54k 30k 3 CC 34 a Additional Refrigerant Charge Required 36a ARU 072 4 Outdoor Unit Factory Refrigerant Charge To obtain factory refrigerant charge for each frame Arumer see the Multi V IV Engineering Manual or Installation ARULA ER Specification Tables ARUGA 168K Total
5. PRE COMMISSIONING MULTI V Indoor Unit Auto Addressing Troubleshooting a Failed Indoor Unit Auto Addressing Procedure If the quantity of indoor units the auto addressing procedure found is incorrect or the 88 never disappears from the display for the seven 7 minutes the auto address routine has failed and a communications problem exists If the Auto Address Procedure failed L 2 Verify ALL indoor unit ON OFF buttons are in the OFF position i e ON OFF button NOT illuminated Check the terminations polarity and continuity of each conductor on the communications cable between the outdoor unit and the indoor units Verify the indoor unit to outdoor unit communications cable is wired correctly e Verify the conductor connected to the 3 or 5 in the case of cassette frame codes TP TN TM terminals on all indoor units and is terminated on the outdoor unit terminal tagged IDU A e In a similar fashion verify the conductor connected to all indoor units on the 4 or 6 in the case of cassette chassis codes TP TN TM terminals and is terminated on the outdoor unit terminal tagged IDU B Verify the shield of the communications cable is grounded at the outdoor unit only All segment shields should be spliced together at each indoor unit and NOT grounded After repairing the communications cable go to Step 9 of the Initiate the Auto Addressing Procedure and repeat the process until successful P
6. MULTI V Figure 55 Heat Pump and Heat Recovery 96 000 to 168 000 Btu h Single Frame Power Wiring and Communication Cable Internal Routing and Terminations Left End Right End Main power i Main l power terminal block terminal block Ground wire Ground wire j Rouer N sn S il Dous d Ground cable g fa i if 2 ground cable Spacing it Le E zo L tz e o j LE T CH BW D ell TI Communication CH ES 7 Communication cable J L J a cable Main power Main power terminal block terminal block Ground wire Ground wire P ower Ground cable NA O l D ieee I i 4 eg Power Ground cable Communication Communication cable i Cable Spacing A Note When connecting the power wiring and communication cables avoid placing these near the oil level sensor If placed near the sensor elec tromagnetic energy may cause the sensor to malfunction 138 Due to our policy
7. gt 203 F 3 2 Excessive increase in slavel outdoor unit fan heat System has shut off because slavel outdoor unit fan heatsink sink temperature temperature is gt 203 F 3 Excessive increase in slave2 outdoor unit fan heat System has shut off because slavel outdoor unit fan heatsink sink temperature temperature is gt 203 F Master outdoor unit fan heatsink temperature Disconnection or short circuit of master outdoor unit fan heat sensor error sink temperature sensor Ge Slavel outdoor unit fan heatsink temperature Disconnection or short circuit of slavel outdoor unit fan heat sensor error sink temperature sensor Slave2 outdoor unit fan heatsink temperature Disconnection or short circuit of slave2 outdoor unit fan heat sensor error sink temperature sensor 1 Valve addressing error Automatic valve addressing procedure failed a Heat recovery unit liquid sensor error C Heat recovery unit Heat recovery unit number Outdoor Unit Disconnection or short circuit of heat recovery unit liquid pipe sensor Heat recovery unit subcooling pipe inlet sensor error Disconnection or short circuit of heat recovery unit subcooling C Heat recovery unit Heat recovery unit pipe inlet sensor number Heat recovery unit subcooling pipe outlet sensor error Disconnection or short circuit of heat recovery unit subcooling C Heat recovery unit Heat recovery unit pipe outlet sensor number Communication error between o
8. lf a zone controller Remote Unit controller on the Hydro Kit is connected to the component verify the LCD screen displays current operational characteristics Pre commissioning Process The pre commissioning process will prepare the system for commissioning in several steps 1 Power up the system 2 Verify power is correct 3 Run self diagnostics check 4 Assign a system address to indoor units 5 Assign addresses to heat recovery units heat recovery systems only 6 Assign each central control device an address Power Up the System Verify the Power is Correct Multi V IV outdoor units require either 208 230V 60Hz 3 or 460V 60Hz 38 power Verify that the power and phase requirements are correct and all three legs are present Make sure that the power imbalance ratio between phases is no greater than 2 If the electrical power is dirty the unit may shutdown on a compressor safety and or the lifespan will be reduced Multi V IV outdoor units are inverter driven Do not install a phase leading capacitor If one is included it will deteriorate the power factor improvement effect and may cause the capacitor to generate an abnormal amount of heat LG Due to our policy of continuous product innovation some specifications may change without notification 147 DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HUIUOISSIWIWO9 d1q MULTI V IV System In
9. Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HUIUOISSIWIWO9 d1q MULTI V IV System Installation Manual PRE COMMISSIONING MULTI V Prepare the Refrigerant Piping System Vacuum for Heat Recovery Systems Vacuum the refrigerant piping system by connecting the vacuum pump to the service ports for the liquid pipes and the high pressure vapor pipes on the outdoor unit the low pressure vapor pipe is included in the vacuum procedure through the heat recovery unit Use a vacuum pump with a gauge that can evacuate to 500 microns and vacuum with the service port valve closed Never air purge with refrigerant 1 Evacuate the system for two 2 hours bringing the system up to 500 microns After maintaining the system to 500 microns for more than one 1 hour confirm that pressure has risen If not there may be moisture or a leak somewhere in the refrigerant piping system 2 Ifthe system has been evacuated for more than two 2 hours and itis suspected that moisture may be present rainwater may have entered the piping if installation look a long time to complete or if work occurred during a rainy season pressurize to 14 psi vacuum break with nitrogen gas and then vacuum again for one 1 hour to 500 microns If the system cannot be evacuated to 500 microns within two 2 hours repeat vacuum break After maintaining the system in vacuum for one 1 hour check to the vacuum gauge to see if pressure ha
10. LG LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V Figure 68 Indoor Unit Auto Addressing Procedure Flowchart Wait 45 seconds Outdoor unit sequences through self diagnostics check Wait until LED is blank Press hold the red Auto Address Button for five 5 seconds PRE COMMISSIONING Indoor Unit Auto Addressing Initiate auto addressing procedure LED displays AR 88 Wait three 3 to seven 7 minutes Auto addressing procedure is complete The number of indoor units that have successfully completed the auto addressing procedure will display on the LED for ten 10 seconds LED displays A 88 Check the communication cable connections Address number of each indoor unit is shown on the wired remote controller display or on the indoor unit display The address number will disappear Auto addressing successful after pressing the on off button on the remote controller If 01 02 08 is seen that means that eight 8 indoor units have been successfully auto addressed LG Due to our policy of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp 151 HUIUOISSIWIWO9 d1q MULTI V IV System Installation Manual
11. The figures above are based on parallel lengths up to 328 feet long For lengths in excess of 328 feet the distances will have to be recalculated in direct proportion to the additional line lengths involved If the power supply waveform continues to exhibit some distortion the space between the power wiring and communication cable should be increased A Noe e Do not bunch the power wiring and communication cables together e Do not run the power wiring and the communication cable in the same conduit LG Due to our policy of continuous product innovation some specifications may change without notification 135 DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp DuuuuW weysAs ed11 99 9 MULTI V IV System Installation Manual ELECTRICAL SYSTEM INSTALLATION Wiring and Cable Terminations Location of Outdoor Unit PCBs and Other Components Figure 53 Single Frame Outdoor Units Small Frame Outdoor Units MULTI V Large Frame Outdoor Units Main PCB Power Conditioner Internal Electrical Device Interface Board 136 Line Voltage Terminal Block Due to our policy of continuous product innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ Al rights reserved LG is a r
12. an Air Balance for Ducted Indoor Units For each ducted model indoor unit confirm that the Test and Balance contractor adjusted the fan speed setting values Record the actual fan setting value used to deliver cataloged CF Ms at the jobsite static pressure conditions in the appropriate column on the Pre Commissioning Device Configuration Worksheet If the fan setting value was left at the factory default insert 00 in the blank A Note Itis always best if the air balance is completed prior to a request for a commissioning agent If the air balancing contractor has not completed the work before commissioning the Commissioning Agent is not responsible for setting the indoor unit air flow rates fan speed or insure the air volume delivered at each indoor unit is per project specifications only to spot check Excessive or restricted airflow may impact the ability of the Commissioning Agent to successfully complete system commissioning If problem exists request verification from the Test and Balance contractor If necessary provide instruction to the air balance technician on how to adjust the indoor unit fan setting value 156 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI Mm PRE COMMISSIONING Setting Up the Heat Recovery Unit Only For Heat Recovery Systems
13. common multiple core communications cable Each communications bus shall be provided a separate cable e be tween outdoor unit s and indoor units outdoor units and central controller s If communications cables of separate systems are wired using a common multiple core cable it will result in a poor communications signal and unacceptable system operation LG Due to our policy of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp Wired Controllers 143 DuuuuW weysAs jed11 99 9 MULTI V IV System Installation Manual ELECTRICAL SYSTEM INSTALLATION MULTI V Communications Cables Communication Cables Between the Master Outdoor Unit and Indoor Units Heat Recovery Units continued e Communications Cable from the Outdoor Units and Indoor Units Heat Recovery Units Heat Recovery System Only Begins at the Master Outdoor Unit e Field Provided 18 Gauge Stranded Two core Cable Shielded Insulation material as recommended by local code A Note The terminal tagged GND on the outdoor unit main PCB is not an earth ground terminal It is a neutral terminal provided to connect the outdoor unit to central control devices
14. error between slave2 outdoor unit and Slave2 outdoor unit main PCB is not receiving signals from master master and slavel outdoor units and slavel outdoor units avel outdoor unit fan CT sensor error n uM Wn For detailed information on how to troubleshoot each error see the Multi V IV Service Manuals on www lg vrf com LG Due to our policy of continuous product innovation some specifications may change without notification 173 LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp s po 10113 MULTI V IV System Installation Manual ERROR CODE TABLES MULTI Mm Table 62 Error Codes continued 1 0 5 1 Master outdoor unit fan PCB communication error _ Master outdoor unit main PCB is not receiving a signal from the fan _ 1 0 5 2 Slavel outdoor unit fan PCB communication error __ Slavel outdoor unit main PCB is not receiving a signal from the fan _ 1 0 5 3 Slave2 outdoor unit fan PCB communication error Slave2 outdoor unit main PCB is not receiving a signal from the fan _ 1 0 6 1 Master outdoor unit fan IPM error Instant overcurrent peak of master outdoor unit fan IPM 1 0 6 2 Slavel outdoor unit fan IPM error Instant overcurrent peak of slavel outdoor unit fan IPM 1 0 6 3 Slave2 outdoor unit fan IPM error Instant overcurrent peak of slave outdoor unit fan IPM E o
15. in standby waiting for another SWO02C 4 backward command 12 Upon successful completion of the auto address procedure SW01C e confirm record the system address assigned to each indoor unit by the auto address procedure in the column provided on the Pre commissioning Device Configuration Worksheet 13 After recording the system addresses assigned to each device open the outdoor unit disconnect Remove the outdoor unit to indoor unit communications cable from terminals IDU A and IDU B Protect conductors by placing electrical tape over the bare ends 14 Close the disconnect to reapply power to the outdoor unit and energize the compressor crankcase heater Once again verify that the outdoor unit to indoor unit s communications cable is not connected to terminals IDU A and IDU B of the outdoor unit 15 Replace the control panel door AWARNING Upon successful completion of the auto addressing function an unintentional compressor start can occur unless the communications cable to the indoor units is removed from the outdoor unit terminals IDU A and IDU B Do NOT open the service valves or attempt to start outdoor unit compressors or until directed by the Commissioning Agent Major damage to the unit piping and compressors will occur and there is a risk of explosion suffocation physical injury and or death 150 Due to our policy of continuous product innovation some specifications may change without notification
16. of PVE refrigeration oil before tightening flare fittings Insure all field made flares are 45 Use factory supplied flare nuts only All pipe segments were properly supported and all wall penetrations were sleeved All pipe insulation is not compressed at any point Y branch and headers fittings were properly supported per details provided in the Multi V IV Outdoor Unit Installation Manual Insure Y branch fittings are installed in the correct direction Flow is always from the single end to the double end No oil traps solenoid valves sight glasses filter driers or any other unauthorized refrigerant specialities are present Optional High quality R410A rated full port ball valves with a Schrader port were used at all indoor units and at will in the refrigerant piping network Recommended for serviceability Best practice includes a minimum of 20 of straight pipe was installed between each elbow and Y branch or header fitting and between two Y branch fittings Due to our policy of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V u INSTALLATION CHECKLIST PAGE 2 LG Heat Recovery Unit Description Check Heat Recovery Unit is installed properly cannot be installed upsidedown or any angle top up and level O Piping is insulated
17. properly per the design engineer s specifications Insulation lines butt the housing of the Heat Recovery Unit DIP switches and rotary dial settings are correct Eoo If large capacity indoor unit a Y branch is installed properly Condensate Pump Drain Installation Description Check Indoor unit condensate drain pipes were installed correctly aa All condensate vertical risers are equal to or less than 27 1 2 from the bottom of the indoor unit 7 Indoor units with condensate pumps were level Units with gravity drains were level or slightly canted toward the drain connection a and are supported properly E condensate drain lines were properly connected do not have traps and connect to the top surface of the main drain ine Power Wire and Communications Cables Description Check Power wiring was connected to a three phase 208 230V source or three phase 460V verify system electrical requirements fo Ground wire was installed and properly terminated at the outdoor unit s is The power supplied was clean with voltage fluctuations within specifications 10 of nameplate Power wiring to the outdoor unit s was installed per all local electrical code requirements Power wiring to each indoor unit was installed per all local electrical code requirements ie 4 Communications cable between the outdoor unit s and indoor units was connected in a daisy chain configuration i e single Ll parallel chain No Star or multiple para
18. 49 Display Code Definitions Outdoor Unit Nominal Capacity w iee 9 2 e m x x os 2 x 2 Table 50 Display Code Definitions Voltage Outdoorunitcode 2 J e o o Electrical Requirements 208 230V 60Hz 30 460V 60Hz 30 Table 51 Segment Display Sequence Two 2 seconds per segment following a forty five 45 second wait Sequence Description CT Cogdeiel Master Outdoor Unit Nominal Capacity HP Horsepower 8 14 tons Slavel Outdoor Unit Nominal Capacity If applicable HP Horsepower 8 24 tons Slave2 Outdoor Unit Nominal Capacity If applicable HP Horsepower Total Nominal Capacity of System HP Horsepower 208 230V 60Hz 30 Unit Voltage 460V 60Hz 30 WE THeatPump 2 4 Unit Type Heat Pump 2 6 Oo o 46 NotApplicable 148 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ Al rights reserved LG is a registered trademark of LG Corp MULTI Mm PRE COMMISSIONING Indoor Unit Auto Addressing Indoor Unit Auto Addressing AWARNING Disconnects should only be operated by a properly licensed electrician at this time Never look at a disconnect switch when closing Turn away from the switch when closing Incorrect wiring could cause the disconnect to explode physical injury and or death A Note During the pre commissioning process do not chang
19. Factory Refrigerant Charge sum of refrig charge for all Outdoor Units in the system w w ALA N N tay JL 41 37 37 1 Total System Charge Sum of Additional Refrigerant Charge Required and Total Factory Refrigerant Charge ICF Ref Correction Factor for Refrigerant Charge For refrigerant charge purposes consider only the liquid line ignore the vapor line s Due to our policy of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V IV System Installation Manual MAINTENANCE RECOMMENDATIONS MULTI V u Table 64 Maintenance Recommendations Occurrence Minimum Wash filters On a regular basis as needed Indoor Units Clean check condensate pan Outdoor Units ol ES LE EEE Communications Cable and Power Wiring Monn thatal Ee are properly A Note Itis also recommended to monitor system operation using LGMV Software atleast once a year 184 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp
20. MULTI V ELECTRICAL SYSTEM INSTALLATION General Information A WARNING e All power wiring and communication cable installation must be performed by authorized service providers working in accordance with local state and NEC regulations related to electrical equipment and wiring and following the instructions in this manual e Undersized wiring may lead to unacceptable voltage at the unit and may cause unit malfunction and be a fire hazard e Properly ground all outdoor units and indoor units Ground wiring must always be installed by a qualified technician Do not connect ground wire to refrigerant gas or water piping to lightening rods to telephone ground wiring or to the building plumbing system Failure to properly provide an NEC approved earth ground can result in equipment malfunction property damage electric shock physical injury or death e Install appropriately sized breakers fuses overcurrent protection switches and wiring in accordance with local state and NEC regulations related to electrical equipment and wiring and following the instructions in this manual Generated overcurrent may include some amount of direct current Using an oversized breaker or fuse may result in equipment malfunction property damage electric shock physical injury or death e The outdoor units are inverter driven Do not install a phase leading capacitor if installed it will deteriorate the power factor im provement effect and may cause the ca
21. Software 213 Error No 21 on slave2 unit 21051 Error e If two or more errors occur simultaneously the lower error code number is displayed first No 105 on master unit After error is resolved the error code does not display Error Code Nomenclature Definitions e MICOM Non volatile memory chip where unit 1 Repeats A 2 1 2 C 1 2 setup information is stored e EPROM Non volatile memory chip where Compressor Error device identification size and factory defined Unit s Master slaves Slave default component operating parameters are Compressor Error stored Table 57 Error Codes ErrorCode __Descrip on O Z o J Deis S O _ Indoor unit air temperature sensor has disconnected or short d unint ratuen a remotewall tempera circuited Check the wiring connection at the CN Room socket EE on the indoor unit PCB then check the thermistor D 1 Indoor unit inlet pipe temperature sensor has disconnected or Hea unit inlet pipe temperature sensor communica short circuited Check the connection at the CN PIPE IN socket E on the indoor unit PCB then check the thermistor Communication error between zone controller and Indoor unit PCB has not received communications signal from indoor unit zone controller Drain pump and or flow switch is are malfunctioning Also check oa indoor unit drain ail dla drain line for obstructions e Indoor unit has not received communications signal fro
22. able A Note Main power j terminal block Ground wire iq P ower Ground cable bag El Communication cable Main power terminal block Power Ground cable Spacing Ground wire Communication cable When connecting the power wiring and communication cables avoid placing these near the oil level sensor If placed near the sensor elec tromagnetic energy may cause the sensor to malfunction Due to our policy of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp 137 Bulli wesAs e914199 9 MULTI V IV System Installation Manual ELECTRICAL SYSTEM INSTALLATION Wiring and Cable Terminations
23. ading of less than 500 microns 9 At 500 microns valve off the charging port by closing the core removal tool ball valves 10 Remove the vacuum hoses and pumps A Note Do not open the outdoor unit service valves and release the factory refrigerant charge until the Commissioning Agent authorizes to do so 11 Leave the refrigerant piping system in a vacuum until the Commissioning Agent arrives and is satisfied with the micron gauge reading A Note The system must be left in a vacuum until the Commissioning Agent arrives and verifies the quality of the evacuation process If the evacu ation procedure was not conducted properly the system will likely malfunction and operate erratically Significant costs may be incurred including but not limited to refrigerant reclaim recycle and replacement 162 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI Mo PRE COMMISSIONING Prepare the Refrigerant Piping System Vacuum for Heat Pump Systems Vacuum the refrigerant piping system by connecting the vacuum pump to the service ports for the liquid pipes and the vapor pipes on the outdoor unit Use a vacuum pump with a gauge that can evacuate to 500 microns and vacuum with the service port valve closed Never air purge with refrigerant 1 Evacuate the system fo
24. ble Shields between connected devices shall be tied together and continuous from the outdoor unit s to the last device connected A M e e Ring and spade terminals used to connect communications cables MUST be copper bearing Do NOT use terminals that are gal vanized or nickle plate over steel e Always verify the communication cable is connected to a communications terminal on the outdoor unit s Never apply line voltage power to the communication cable connec tion If contact is made the PCBs may be damaged The shield of the communications cable connecting the outdoor unit s to the indoor units should be grounded only to the out door unit s frame s Tie the shield of each cable segment together using a wire nut at each indoor unit e Never ground the shield of the communica tions cable to the indoor unit frame or other grounded entities of the building e Position the outdoor unit s communica Master Outdoor Unit Heat Recovery Unit for Heat Recovery Systems Only Wired Controllers Figure 60 Outdoor Unit Communications Labeling Schematic Wired Controllers Wired Controllers Mester Outdoor Unit Improperly Terminated Communications Cable Multiple Core Cable in a Starburst Heat aa Unit for Heat Recovery Systems Only Configuration Wired Controllers Wree Controllers tions cables away from the power wiring Refer to minimum spacing requirements provided in Table 48 e Never use a
25. cal Service Manual for this product for more information e For refrigerant charging in a multi frame system only use the charging ports on one outdoor unit does not matter which one e For evacuation purposes in a multi frame system connect to the hot gas service port and liquid service port on only one outdoor unit A Note DO NOT apply power to any Multi V system device prior to performing a system evacuation There is a possibility that EEV valves may close and isolate sections of the pipe system Contact your LG Applied Rep champion or service technician for the procedure to reopen the EEV valves before evacuation 1 Release the Pressure Test dry nitrogen charge from all refrigerant pipes 2 Verify ALL field installed isolation ball valves are OPEN including those that are capped for future use 3 Remove and discard the Schrader valve cores at the outdoor unit s charging ports This is a preventive step that ensures that valves used after charging the system have not been subjected to the high pressure value used during the Pressure Test 4 Attach a 5 16 core removal tool equipped with ball valve and a new core to each charging port on the outdoor unit 5 Check the vacuum pump s you intend to use and verify the oil in the sump is fresh and not contaminated 6 Attach the vacuum pump s to each charging port simultaneously using high quality refrigerant vacuum hoses 7 Perform a triple evacuation 8 Achieve a micron gauge re
26. ch indoor unit On wall mounted indoor unit models set the assignment using the handheld remote controller e Use a daisy chain configuration and connect all of the group s indoor units together starting at the Master unit A M e Cable connected to Zone Controller is the factory default connection LG LG Supplied LN Be Figure 65 Indoor Unit Group to Zone Controller Connections OnAll Indoor Unit Styles Om l Indoor Unit Styles OnAll Indoor Unit Styles CN REMO CN REMO CN REMO 0 0 LG Supplied C LG Supplied Group Control P A Due to our policy of continuous product innovation some specifications may change without notification 145 DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HunIiM weysAs 1 911 9913 MULTI V PRE COMMISSIONING Preparing the Electrical System Prepare the Electrical System 1 Verify correct clean specified power is at the line side of each system component s disconnect 2 Note if the green LED light on the component PCB board is illuminated 3 Ifa Dynamic V 8 VL air cleaner is installed on a high static ducted model indoor unit verify power has been provided to the air cleaner controller Verify by observing the LED in the center of the disconnect plate is illuminated 4
27. e any DIP switch settings All switches should be left in the OFF position on both DIP Switches SWO1B and SW02B Initiate the Auto Addressing Procedure A Note f the Auto Address Procedure has never been successfully completed for the system the compressor s will not start when power is applied to the unit e Auto addressing is only possible on the main PCB of the outdoor unit master unit if dual triple frame system Figure 66 Master Slavel and 1 Verify all that all i i ted to th t erify all that all indoor units connected to the system have power to the PCB board AND all zone Slave2 DIP Switch Settings controller system start buttons are OFF Master Outdoor Unit 2 Remove the maintenance access panel and unit control box cover from the outdoor unit Place panels and screws in a secure area 3 Verify that the communications cable between the indoor units and the outdoor unit is terminated at the outdoor unit terminals IDU A and IDU B 4 Verify the shield on the communications cable is grounded at the outdoor unit 5 If installing a dual or triple frame system verify which outdoor unit will be the Master unit the Slavel unit and the Slave2 unit check if the DIP switches on DIP SW01 are set as shown on right The outdoor unit with the largest capacity must be set as the Master unit 6 Cycle power on the outdoor unit Leave disconnect in the ON position 7 Check the outdoor unit s current con
28. eat Recovery Systems Configure the Heat Recovery Unit Settings 1 Identify how many ports are connected see Table 53 2 Group ports if necessary If any connected indoor units are large capacity models indoor units with gt 54 000 Btu h capacity two heat recovery ports must be grouped to serve a large capacity indoor using an inverted Y branches 3 Set DIP Switches as outlined in Tables 53 and 54 Table 53 Selecting the Heat Recovery Unit Model PRHRO21A Two 2 ports recon setno leU Bel UO 123 4567 8 123 45 67 8 One port connected Two ports connected Three ports connected Four ports connected A Note 158 Each heat recovery unit has dip switches No 2 and No 3 factory set as shown above in initial setting To use a PRHR 021A for one port cap offthe second pipe and setthe dip switches on the heat recovery unit for one port connected as shown in the table above To use a PRHRO31A for two ports cap off the third port and set the dip switches on the heat recovery unit for two ports connected as shown in the table above e To use a PRHR 041A for three ports cap off the fourth port and set the dip switches on the heat recovery unitfor three ports connected as shown in the table above e To use a PRHRO41A for two ports cap off the third and fourth ports and set the dip switches on the heat recovery unit for two ports connected as shown in the table above e Any unused por
29. ect one extension cable and the communications cable from the zone controller to the Y cable Plan the Central Control Addresses Assignments Check with the building s Chief Engineer and gather any preferences he may have If there are no preferences e Hex assignments do not have to be assigned in any particular order or an order defined by the routing of the communications cable between the indoor units In most cases Hex addresses can be skipped e All members of a Hex Group are not required to be on the same Multi V system e Addresses can be assigned at random notin any particular order and can be skipped 10n AC EZ do not skip addresses Start with Hex address 0 Buttons have pre assigned Hex addresses If an address is skipped the associated button will do nothing Indoor Unit Central Control Address Assignments A central control address is made up of two hexadecimal characters Figure 69 Central Control Address Nomenclature e The first character in the central control address is the Hex Group Identifier Possible Hex Group Identifiers in order of lowest to highest are 0 9 followed by A F The second character in the address is the Hex Member Identifier in a Hex Group Hex Member Identifiers in order from lowest to highest are 0 9 followed by A F Hex Address Assignment Limitations anes First character is Second character e There is a limit of 16 Members per Hex Group the Hex Group is the Hex Member e There is a limit
30. ed zone controller e NEVER Splice cut or extend cable length with field provided cable If the length needs to be extended the LG Extension Kit sold separately must be used A maximum of four 4 kits up to 165 feet can be used Figure 64 Indoor Unit to Zone Controller Connection NS On All Indoor Unit Styles Ra CN REMO e Set the indoor unit operating parameters using DIP switches or by setting up the zone controller Refer to the indoor unit installation manuals for more details A M e Cable connected to Zone Controller is the factory default connection Communication Cables Between Multiple Indoor Units Operating as a Group Group Control e If any indoor units were specified to operate in unison use one or multiple three core Group Control Kit sold separately containing extension and Y splitter cables One 1 group control cable kit for each indoor unit in the group except for the last indoor unit Always use an LG provided group control communications cable Group Control Kit sold separately between the indoor unit and the wall mounted zone controller e NEVER splice cut or extend cable length with field provided cable e Before running cable decide which indoor unit will be the Master The zone controller will be connected to the master e Identity each indoor unit operating as a group as Master or Slave Adjust the pertinent DIP switch at ea
31. egistered trademark of LG Corp LG MULTI V ELECTRICAL SYSTEM INSTALLATION Wiring and Cable Terminations Figure 54 Heat Pump and Heat Recovery 72 000 Btu h Single Frame Power Wiring and Communication Cable Internal Routing and Terminations Right End Left End H KA qala B i mec Main power terminal block Ground wire Houer Ground cable Spacing Communication cable Main power cn sl AY I IR terminal block d IL LAI Vi Ground wire H Power Ground cable sac LA i D BEE Communication c
32. erminal Ko E e Z CENB e Pele p ISODUB SODUA g g CENB e Bie GND DN ISODUB SODUA 2 DA CENB Sn Sen Se ES Itis a neutral terminal provided to connect Lele lela JE l i JE JE 1Glol lolaiaia the outdoor unit to central control devices EA 144 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ Al rights reserved LG is a registered trademark of LG Corp MULTI V ELECTRICAL SYSTEM INSTALLATION Communications Cables Communication Cables Between the Outdoor Unit s and the Central Control Device e Field Provided 18 Gauge Stranded Two core Cable Shielded Insulation material as recommended by local code Connect all central control devices such as AC Smart Il AC Smart Premium ACP BACnet and LonWorks gateways and energy recovery ventilators all on the same cable Order does not matter Polarity does Keep A terminals with A terminals and B terminals with B terminals Starting at the outdoor unit terminate the cable on terminals Internet A and Internet B Route the cable as needed between each device Connect the shield to ground ONLY at the outdoor unit Tie shields together at each termination point Communication Cables Between the Indoor Units and the Wall Mounted Zone Controller e Only use LG provided three core communications cable between the indoor unit and the wall mount
33. error Master outdoor unit fan is experiencing first position sensor failure 7 9 2 Slavel outdoor unit fan operation failure error Slave1 outdoor unit fan is experiencing first position sensor failure 7 9 3 Slave2 outdoor unit fan operation failure error Slave2 outdoor unit fan is experiencing first position sensor failure 8 6 1 Master outdoor unit main PCB onboard EPROM error Verify the EPROM is present and in the socket correctly 18 6 2 Slavel outdoor unit main PCB onboard EPROM error le Check if all pins are in and are not bent fa 6 3s ave2 outdoor unit main PCB onboard EPROM error M notch in the chip lines up with the arrow on the e Communication error between master outdoor unit fan MICOM 7 1 Master outdoor unit fan PCB EPROM error and EPROM e EPROM is missing e Communication error between slavel outdoor unit fan MICOM 7 2 Slavel outdoor unit fan PCB EPROM error and EPROM e EPROM is missing e Communication error between slave2 outdoor unit fan MICOM 7 3 Slave2 outdoor unit fan PCB EPROM error and EPROM e EPROM is missing HHDR Communication error between master outdoor unit and Master outdoor unit main PCB is not receiving signals from slave Slave outdoor units outdoor units ja fo a 2 Communication error between slavel outdoor unit and Slavel outdoor unit main PCB is not receiving signals from master master and slave2 outdoor units and slave2 outdoor units aofa Communication
34. figuration code s Observe the unit setup codes using the LED display found on the outdoor units PCB Each code will display for two 2 seconds A Note While this routine runs the unit runs a self diagnostics check At completion the LED should be clear and nothing displayed Diagnostic process should take from three 3 to seven 7 minutes LG Due to our policy of continuous product innovation some specifications may change without notification 149 LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HUIUOISSIWIWO9 d1q MULTI V IV System Installation Manual PRE COMMISSIONING MULTI V Indoor Unit Auto Addressing Initiate the Auto Addressing Procedure continued 8 Know how many indoor units are connected to the system Figure 67 Auto Address Button Location DIP SWO1 LED 9 Press and hold the red SW01C button for about five 5 seconds Release when 88 appears on the LED After three 3 to seven 7 minutes the display will flash a number for about ten 10 seconds indicating how many indoor units the system successfully communicated with 10 This number should match the known installed number of indoor units if the auto addressing procedure was successful Using LGMV read the address of each indoor unit SWO4C x cancel SWO3C gt forward 11 Upon completion of the auto addressing routine the display will be blank and the system will be
35. hen connected through the indoor unit however the user will not be able to record data This software can be used to both commission new systems and troubleshoot existing systems LGMV data can be recorded to a CSV file and emailed to an LG representative to assist with diagnostic evaluations Recommended Minimum PC Configuration e CPU Pentium IV 1 6 GHz e Hard Disk 600 MB when operating e Main Memory 1G e MS Office 2003 2007 recommended for select reporting Operating System Windows XP Vista 7 32 bit recommended functions 64 bit A Note Images on these pages are examples of LGMV screenshots Actual images may differ depending on the version of the software and the units installed 168 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI Mm ERROR CODE TABLES Error Codes Error Display e Indicate different types of unit failures assist in self diagnosis and to track the frequency The first second and third number on the LED of occurrence indicates error number the fourth number on e Error codes are shown on the LED of indoor units wired remote controller the outdoor LED indicates outdoor unit number unit control board and on the main screen of the LG Monitoring View LGMV Diagnostic Examples 211 Error No 21 on master unit
36. ion 167 LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp S9p0Dd 10113 MULTI V IV System Installation Manual LG MONITORING VIEW LGMV MULTI V u DIAGNOSTIC SOFTWARE 5 Data Figure 74 MV Control Indoor Units Screen e Data Saving Start Recording of real time data to a separate file created to be stored on the user s computer e Data Loading Start Recorded data from a saved CSV file can be loaded to create an LGMV session 6 Monitoring e Electrical The lower half of main screen is changed to show Inverter Compressor Amps Volts Power Hz Inverter control board fan Hz EI DN EI BI a EI D EI Error Codes LGMV software helps the service technician or commissioning agent to troubleshoot system operation issues by displaying malfunction codes These error codes can be seen on the main screen of the LGMV software program For an overview of Multi V IV error codes see page 169 For detailed information on how to troubleshoot individual error codes see the Multi V IV Service Manuals The software is available in a high version with all of the features listed above The low version has all features as the high version without Target High Pressure and Target Low Pressure values shown on main screen In lieu of connecting to the outdoor unit the user has the option to connect to the indoor unit with the use of a USB to RS 485 connector kit W
37. ld notes 3 A verified copy of the As Built LATS Multi V Project file mtv that includes all changes noted by the pipe fitter s in Number 2 The tree diagram notes should include changes to the line lengths used for each liquid line segment 4 A copy of a completed and verified Installation Checklist for the outdoor unit s indoor units ERVs heat recovery unit for Heat Recovery systems only Air Cleaners and Control Devices Correct any procedures needing attention before initiating a request for commissioning A copy of the air balance report showing proper airflow at all indoor units A completed Pre commissioning Device Configuration Worksheet A completed copy of the Pre commissioning Checklist If available a list of IP addresses obtained from the building owners IT department for each ACP BacNet LonWorks AC Smart Il AC Smart Premium devices Cojo Initiate a Commissioning Request Description Verify this checklist and requirements herein have been met Complete this checklist in its entirety BEFORE initiating a request for Commissioning Send all Pre commissioning Package Documents to your LG Applied Representative Contractor Name Phone Date This form must be completed and submitted to LG a minimum of three 3 weeks prior to final scheduling of any startup Note If any of the above items are not complete at time of start up back charges will be assessed for additional costs
38. llel circuits No cable splices or wire caps were used to connect communications cables LG supplied cable was used between each indoor unit and its zone controller No cables were spliced and no wire caps are KH present Communication type RS 485 BUS type All communications cables are a minimum of 18 Gauge two conductor stranded with insulation material per local code Cable fs segment shields were tied together Cable shield is grounded at the Master outdoor unit only Use appropriate crimping tool to attach ring or spade terminals at all power wiring and control cable terminations P Verify all ring and spade terminals are copper bearing in all communications daisy chains Galvanized or nickel plated steel Lo connectors were not used All power and control wires were properly separated using the recommended distance provided in the product installation manual Only LG supplied Y cables and extension cables were used between indoor units Due to our policy of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V PRE COMMISSIONING CHECKLIST La Page 1 Refrigerant Circuit Preparation Description Check Using a copy of the LATS Multi V pipe design diagram verify the sum of the indoor unit nominal capacity connected to the piping system is between 50 and 130 of the outd
39. m out door unit icati i i e Check indoor unit to outdoor unit communication cable for is L sues Check A terminals are connected to indoor unitA and 3 5 on 3 x 3 cassette terminals B connect to B or 4 6 on3 x3 cassette terminals Indoor unit outlet pipe temperature sensor has disconnected foo unit outlet pipe temperature sensor error or short circuited Check the connection at the CN PIPE OUT socket on the indoor unit PCB then check the thermistor He e Communication error between the indoor unit PCB board and its option card The option card is about 1 x 1 and is plugged into the indoor unit PCB board Check connection between the two Communication error between EPROM chips on indoor unit main PCB e Indoor unit EPROM data is not available e Fan motor has been removed or is defective Use the OHM and voltage check charts in the product service manual The system has detected the fan motor is not spinning Indoor unit BLDC fan motor communications error e On new installs verify installation manual and paperwork were removed from fan discharge shroud before unit was installed e Check the wiring plug and connection at sockets CN MOTOR1 and CN MOTOR2 if used A Master outdoor unit inverter compressor PCB error Outdoor unit inverter compressor PCB error e Under voltage CH HDD outdoor unit inverter compressor PCB error e Refrigerant flow restriction from defective LEV 2 1 3 bei outdoor unit inverter comp
40. n A Not All field power supply wiring must be engineered per local code ul l i3 til l al Gane eee pastert nedan FUSED A FUSED DISCONNECT l DISCONNECT l l Mounted i l Mounted Per Per Local Code Local Code LY Lu GD TT TI l THREE PHASE POWER SUPPLY PANEL BOARD Wiring Trough Field supplied wiring or component _ _ Field supplied wiring sized for combined chassis load requiment Wire crimp for bonding power supply cables field supplied LG Due to our policy of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp 141 HunIiM weaysAs 1 911 991 3 MULTI V IV System Installation Manual ELECTRICAL SYSTEM INSTALLATION MULTI V Power Wiring Triple Frame Outdoor Unit Wiring Configuration A Note All field power supply wiring must be engineered per local code R S T nl L2 al ual L2 L3 EEEE E rbl ln l FUSED l FUSED FUSED l l DISCONNECT DISCONNECT DISCONNECT l l l l Mounted i i Mounted i Mounted Per l Per Per l Local Code i Local Code l Local Code l Li L2 L3 l Ll1 L L3 4 I L1 L2 23 ne EEN E EE T T L THREE PHASE POWER SUPPLY PANEL BOARD Wiri
41. ner wants to know which indoor units are on each floor e Assign a different group number for each floor If there are more than 16 indoor units on a floor multiple Group Numbers may be necessary Member Number Can be assigned at will or for example can follow the room layout on each floor For each LG Central Controller product provided on the project devise a central control address schedule and assign a central control ad dress to each indoor unit s Hydro Kit s and ERV s units Record this central control address for each component in the column provided on the Pre commissioning Device Configuration Worksheet Upload Central Control Address to the Indoor Units For all ducted vertical and floor standing indoor units the central control address must be assigned using a wired zone controller Wall mount ceiling cassette ceiling suspended and the wall ceiling convertible indoor units the central control address can be assigned using a wireless handheld controller or a wired zone controller Power Up All Indoor Unit PCBs Turn the disconnect for each indoor unit to the ON position DO NOT turn the unit ON on off button remains off 154 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V PRE COMMISSIONING Central Control A M e Duri
42. ng Trough Legend K Wire crimp for bonding power supply cables field supplied ze ze e Field supplied wiring or component _ zs se Field supplied wiring sized for combined chassis load requiment 142 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V ELECTRICAL SYSTEM INSTALLATION Communications Cables Communications Cable between the Master Outdoor Unit and Indoor Units Heat Recovery Units Heat Recovery Systems Only e Use a two core shielded stranded cable between the outdoor unit s and the indoor units heat recovery units Heat Recovery Systems Only e Minimum 18 gauge shielded CVVS or CPEVS cable e Insulation material as required by local code e Rated for continuous exposure of tempera tures up to 140 F e Maximum allowable cable length 984 feet e Use copper bearing ring or spade terminals to terminate communication cables e Firmly attach the cable provide slack but se cure in a way to prevent external forces from being imparted on the terminal block e Communications cable connecting the out door unit an indoor unit s should be installed and terminated in a daisy chain BUS con figuration starting at the outdoor unit e Terminate the cable shield to a grounded surface at the outdoor unit s only Ca
43. ng the following procedure NEVER PUSH the ON OFF Enable operation Button on the zone controller For Indoor Units That ARE NOT Being Controlled as a Group 1 Verify the zone controller cable is plugged into CN_REMO socket on the indoor unit PCB 2 Using the controller go to the setup function 02 icons are different for each controller Refer to the controller user s manual for more information 3 Type in the Hex Central Control address that has been designated to the unit 4 Repeat Steps 1 through 3 for each indoor unit in the building For Indoor Units That ARE Being Controlled as a Group 1 Before attempting to assign a central control address to an indoor unit controlled as a group identify which unit in the group will be identi fied as the Master indoor unit and which indoor units are going to be identified as Slave units 2 Go to the Master indoor unit and access the PCB 3 Verify a group control pigtail cable is plugged into the CN REMO socket on the indoor unit PCB If itis not do so now by plugging the communications cable pigtail into the CN REMO socket 4 If the group control extension cable between the indoor units is plugged into the Y cable unplug the extension cable from the Y cable 5 If not already present plug the zone controller communications cable into the pigtail cable 6 Using the controller go to the setup function 02 icons are different for each controller Refer to the controller user s manual fo
44. of 16 Hex Groups per VRF system Identifier 0 F Identifier 0 F e There is a limit of 256 possible Member Identifiers per Central Control Example Group 1 Example Unit 14 See Central Controller Communications Limitations on the next page LG Due to our policy of continuous product innovation some specifications may change without notification 153 DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HUIUOISSIWIWO9 d1q MULTI V IV System Installation Manual PRE COMMISSIONING MULTI V Central Control Central Controller Communications Limitations Each type of Central Controller device is designed to communicate Table 52 Central Controller Indoor Unit Connection Limitations with a limited quantity of indoor units The quantity of indoor units Central Control Device Maximum Indoor Unit Quantity that can be connected to a single central control communications cable therefore will be defined by the central control device on that AC EZ cable with the smallest Maximum Indoor Unit Quantity as shown at AC Smart ll a A right AC Smart Il with Expansion Kit toners Gateway OO aooo Group Number If the building operator wants to know which indoor units are on each outdoor unit and multiple systems serve a building e Assign a Group Number to each system If there are more than 16 indoor units on a system multiple Group Numbers may be necessary If the building ow
45. of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ Al rights reserved LG is a registered trademark of LG Corp MULTI V ELECTRICAL SYSTEM INSTALLATION Power Wiring Power Supply Power Wiring Specifications 1 Outdoor unit s and indoor units must be provided power from Figure 56 Power Wiring Termination Detail Connect P ower Wiring to separate breakers Each outdoor unit frame in a multi frame Terminal Block Using Clamps configuration must be provided a dedicated fused disconnect or Main Power Connection breaker Heat Pump and Heat Recovery Outdoor Units are available o in both 30 208 230V 60Hz and 30 460V 60Hz Check the T e Main power nameplate of each frame and verify that the voltage of the terminal block frame matches the power source provided Peaster e Indoor Units and Heat Recovery Units Heat Recovery Systems Nee Only require 10 208 230V 60Hz power All Indoor Units and Heat Recovery Units Heat Recovery System Only draw mini mal power Where permitted by NEC and local code multiple Indoor Units may be powered from a single 15A breaker 2 Select power wire gauge and insulation type per NEC and local code requirements Maximum allowable voltage fluctuation 10 or nameplate rated value 3 Properly ground each Outdoor Unit per NEC and local codes On multi f
46. of its corresponding indoor unit should be setusing the same number Ve Indoor unit 04 Heat LL Valve 3 Indoor unit 03 ee I Ve Indoor unit 02 LL Valve 01 Indoor unit 01 iC H Central control address SW01M SW03M SW04M DIP Switch and Tact Switch for Manual Heat Recovery Unit Valve Addressing Use to manually address the heat recovery unit valve Normal Setting 1 Set the address of the heat recovery control unit valve to the central control address of the connected indoor unit e SWO1M Selects the valve to address e SW03M Increases the ten 10 digit of the valve address e SW04M Increases the valve address by one 1 2 Prerequisite for manual valve addressing The central control address of each indoor unit must be preset at its wired remote controller Table 55 Manual Valve Addressing Dip Switch No Setup o Nod Manualadaressing vave No4 SW03M Increases the ten 10 digit of the valve address SW04M Increases the valve address by one 1 160 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V PRE COMMISSIONING Setting up the Heat Recovery Unit Only For Heat Recovery Systems Zone Setting 1 Setthe address of the heat recovery cont
47. on LG DLG Electronics U S A Inc Englewood Cliffs NJ Al rights reserved LG is a registered trademark of LG Corp MULTI V PRE COMMISSIONING Group Control Central Control Terminating Group Controlled Indoor Units If any of the indoor units were specified to operate in unison create a group control communications circuit between the indoor units using a group control cable kit consisting of three 3 cables e One pigtail cable e One Y cable One extension cable segment 1 Before proceeding with group control cable terminations verify power is off at all indoor units effected 2 Identify which indoor unit will be the Master unit of the group If not already recorded record the Master and the Slave identity assignment to each indoor unit in the group on the Pre commissioning Device Configuration Worksheet 3 Termination Procedure e Starting with the Master unit plug in the male end of the pigtail cable into the CN REMO socket At the last Slave indoor unit in the group a pigtail cable is not required Plug the male end of the extension cable coming from the previous indoor unit into the CN REMO socket e Plug the Y cable into the pigtail at each indoor unit except for the last Slave indoor unit in the group where no Y cable cable will be needed e Connect two extension cable segments to each Y cable except for the Y cable connected to the Master indoor unit At the Master indoor unit conn
48. oning The Multi V System commissioning process and procedures are provided in a separate manual and or in training materials provided by the LG Academy Training Team To obtain a copy you must be a certified LG commissioning agent After Commissioning Has Been Requested The commissioning agent may contact you to discuss specific job points scheduled day s and expected duration It is the contractor s responsibility to provide all of the necessary start up labor refrigerant tools and test equipment needed to complete the process in the expected time frame Please note that the commissioning agent s allotted time at your project DOES NOT include owner training Itis understood that the contractor is to request for a commissioning agent when all required project readiness points are complete not based on an expected completion date The contractor also acknowledges that they will assume all responsibility for costs incurred by the commissioning agent including but not limited airfare travel costs transportation shipping labor and tool costs due to lack of readiness The commissioning agent s schedule is usually very rigid and may have no flexibility regarding duration It also involves advance travel ar rangements that may be impractical or impossible to change Freight Damage and Unit Replacements u cs ste Your LG Manufacturer Representative MISSING PAFS iiss iconiuterrsnsantianntrmornnnnnsin RNa RMMIRRNERE aan nanan annaa You
49. oor unit s s nominal capacity If this rule is violated the system will not start Check all indoor units for power at the unit disconnect and power is present at the indoor unit PCB board LED is lit DO NOT TURN ON THE UNIT using the ON OFF button Successful auto address routine is complete All device addresses have been recorded on the Indoor Unit Device Configuration Worksheet Insure all field installed full port ball valves are open The piping system held a constant 550 psig pressure for a minimum of 24 hours with all isolation valves open A triple system evacuation has been performed Micron gauge reading held at a minimum of 500 for 24 hours with all isolation valves open and without the vacuum pump connected Power was energized to the outdoor unit s at time on day to power the compressor crankcase heater s Must be at least 6 hours before commissioning The communications cable to the indoor units has been disconnected from the IDU B and IDU A terminals at the outdoor unit s None of the outdoor unit s service valves have been opened during the installation and preparation of the system for commissioning If the valves were opened the factory refrigerant charge has been released Prepare Pre commissioning Package Documents Include Check 1 A copy of the refrigerant piping system s shop drawing s generated by LATS Multi V pipe design software 2 Acopy of the pipe fitter s pipe changes and fie
50. p ket on the outdoor unit 171 MULTI V IV System Installation Manual ERROR CODE TABLES MULTI Mm Table 60 Error Codes continued Error Code Description O Debis O O O e Disconnection or short circuit of master outdoor unit IP M 1 Master outdoor unit IPM temperatur nsor error BG aster outdoor u emperature sensor erro temperature sencor Disconnection or short circuit of slave1 outdoor unit IP M avel outdoor unit IPM temperature sensor error temperature s n or Disconnection or short circuit of slave2 outdoor unit IP M GER Master outdoor unit three phase power is not connected One or more of R L1 L2 T L3 input power line connections properly is are missing for the master outdoor unit Bon avel outdoor unit three phase power is not connected One or more of R L1 L2 T L3 input power line connections properly is are missing for the slavel outdoor unit Slave2 outdoor unit three phase power is not connected One or more of R L1 S L2 T L3 input power line connections properly is are missing for the slave2 outdoor unit The total of the nominal indoor unit capacity is less than 50 or Ges Ge Combination ratio is out of range more than 130 of the nominal outdoor unit capacity Value of total indoor unit capacity exceeds allowable heat Total indoor unit capacity exceeds allowable heat recov e ani page unit branch capacity Heat Recovery Systems only a dE capacity specifications Heat Recove
51. pacitor to generate an abnormal amount of heat e Verify the power imbalance is no greater than 2 between phases at each outdoor unit frame e Consider ambient conditions temperature direct sunlight inclement weather etc when selecting installing and connecting the power wiring Outdoor Unit Wiring Cable Access Holes and Connections e Unscrew all of the screws and remove the front panel by pulling it forward Figure 52 Accessing the Power Wiring and e Connect the communication cable between the master and slave outdoor units Communication Cable Connections through the terminal block e Connect the communication cable between the outdoor unit s and indoor units and heat recovery control units Heat Recovery Systems only through the terminal block Separating Power Wires and Communication Cables e Position the power wiring a minimum of two 2 inches away from the communication cables to avoid operation problems caused by electri cal interference Do not run both in the same conduit e If itis necessary to run the power wiring and communication cable alongside each other and cannot be avoided table below for minimum recommended distances Table 48 Power Wire and Communications Cable Minimum Required Separation Minimum Allowable Distances Capacity of Power Supply Wiring current Recommended Minimum Distance 11 13 16 inches 19 11 16 inches 100V OO DEING 100A 39 3 8 inches Exceed 100A 59 1 16 inches
52. provided in the Multi V Outdoor and Indoor Unit Installation Manuals Refrigerant Piping Description Check You must have in your possession a copy of the As Designed LATS Multi V piping tree diagram BEFORE ANY FIELD PIPE SIZE OR LENGTH CHANGES ARE MADE PROPOSED CHANGES MUST BE FORWARDED TO THE DESIGN ENGINEER SO THAT THEY CAN INPUT THE CHANGES INTO LATS and RE ISSUE ANEW LATS MULTIV PIPING TREE DIAGRAM Installer must receive change authorization from the design engineer because any change made requires the review of the entire tree diagram and verification that the change did not impact the size of piping segments in other parts of the system Sa arn were properly stored capped and clean All burrs were removed after cutting and pipe ends were reamed efore brazing During refrigerant pipe installation for each segment of pipe a record was made of the pipe length including expansion loops offsets double back sections and sizes as well as the quantity and type of elbows used All long runs of straight pipe were provided with expansion loops Insure Y branch fittings are installed with no more than 10 of horizontal Insure Y branch fittings are installed with no more than 3 of vertical Insure all Header fittings are installed horizontal at an elevation above all connected indoor units A torque wrench and backup wrench were used to tighten all flare connections The back side of all flares were lubricated with a small drop
53. r LG Manufacturer Representative Received Wrong Outdoor Unit Model S ussss scene Your LG Manufacturer Representative Installation Startup and Commissioning Technical Assistance sssrinin 1 888 865 3026 LG Due to our policy of continuous product innovation some specifications may change without notification 165 DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HUIUOISSIWIWO9 d1q MULTI V u LG MONITORING VIEW LGMV DIAGNOSTIC SOFTWARE LGMV software allows the service technician or commissioning agent to connect a computer USB port to the outdoor unit ODU main printed circuit board PCB using an accessory cable without the need for a separate interface device The monitoring screen for LGMV allows the user to view the following real time data on one screen e Actual inverter compressor speed Pressure graph Figure 72 MV Real time Data Screen Target inverter compressor speed showing actual e Actual superheat low pressure and Target superhea SE e Actual subcooler circuit superheat p Ewe e Error code display e Target subcooler circuit superheat EE ER e Main EEV position p 3 l 8 indicator e Subcooling EEV position Target high e Inverter compressor current transducer pressure value e Target low e Outdoor air temperature pressure Actual high pressure saturation temperature PCB printed e Actual low pressure saturation temperature circuit board
54. r more information Type in the Central Control address designated for the Master indoor unit 7 Disable power to the Master indoor unit Do not restore Power to the Master indoor unit at this time It shall be restored in step 18 8 If the zone controller and associated communications cable has already been permanently mounted in place plug the Y cable back into the pigtail and obtain a loose zone controller with a communications cable to continue programming the Slave indoor units 9 Go to the first Slave indoor unit and disconnect the Y cable from the pigtail 10 Plug the zone controller communications cable into the socket on the pigtail cable Do not push the ON OFF button or enable indoor unit operation 11 Using the controller go to the setup function 02 icons are different for each controller Refer to the controller user s manual for more information Type in the Hex address assigned to the unit 12 Change DIP Switch No 3 on the indoor unit PCB to the ON position 13 Disable power to the indoor unit using the disconnect switch Wait one 1 minute 14 While power is off unplug the zone controller cable from the pigtail socket 15 Plug the group control Y cable back into the pigtail 16 Restore power to that Slave indoor unit and go to the next Slave indoor unit 17 Repeat Steps 9 to 16 for each Slave indoor unit except the last one in the group At the last Slave indoor unit the process is the same excep
55. r two 2 hours bringing the system up to 500 microns After maintaining the system to 500 microns for more than one 1 hour confirm that pressure has risen If not there may be moisture or a leak Somewhere in the refrigerant piping system 2 If the system has been evacuated for more than two 2 hours and it is suspected that moisture may be present rainwater may have entered the piping if installation look a long time to complete or if work occurred during a rainy season pressurize to 14 psi vacuum break with nitrogen gas and then vacuum again for one 1 hour to 500 microns If the system cannot be evacuated to 500 microns within two 2 hours repeat vacuum break After maintaining the system in vacuum for one 1 hour check to the vacuum gauge to see if pressure has risen Slave Unit Master Unit E Vacuum U pump H AMIO Ge g P j Sr Close Jo Close Ae 0 bi Q S v 2 2 gt 2 bi S bi S 3 oO Y Qe S gt 3 gt J 3 Liquid side far Indoor unit Vow Vapor side Y ZA eu LG Due to our policy of continuous product innovation some specifications may change without notification 163 DLG Electronics U S A Inc
56. rame installations ground each frame separately Wire Clamps 4 Ground each Indoor Unit and Heat Recovery Unit if applicable separately to a solid earth ground source per NEC and local code requirements Figure 57 Schematic of Suggested P ower Wiring 3Phase3 Wire Power supply Master Slavel Slave2 dE Switd J d Power supply Bd 1 Phase 60Hz 208 230V L1 do Disconnect Disconnect oofpofeofoo loofoofoojoo loofoofoojoo ee ee f A Sa oe AB Disconnect Pul bo Installer option E ogion Installer option Heat Recovery Unit Heat Recovery Systems Only a j LG Due to our policy of continuous product innovation some specifications may change without notification 139 DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp DuuuuW weysAs jeo11 99 9 MULTI V IV System Installation Manual ELECTRICAL SYSTEM INSTALLATION MULTI V Power Wiring Connecting the Power Wiring Best practice dictates using ring or spade terminals to terminate power wiring atthe power terminal block If ring terminals or spade clips are not available then e Do not terminate different gauge wires to the power terminal block Slack in the wiring may generate heat e When te
57. ress and hold the red SWO1C button for about five 5 seconds Release when 88 appears on the LED After three 3 to seven 7 minutes the display will flash a number for about ten 10 seconds indicating how many indoor units the system successfully communicated with This number should match the known installed number of indoor units if the auto addressing procedure was successful Upon completion of the auto addressing routine the display will be blank and the system will be in standby waiting for another command Record the system address the outdoor unit assigned to each indoor unit by the auto address procedure in the column provided on the Pre commissioning Device Configuration Worksheet After recording the system addresses assigned to each device open the outdoor unit disconnect Remove the outdoor unit to indoor unit communications cable from terminals IDU A and IDU B Protect conductors by placing electrical tape over the bare ends to prevent an accidental compressor start from occurring before the Commissioning Agent arrives Close the disconnect to reapply power to the outdoor unit and energize the compressor crankcase heater Once again verify the outdoor unit to indoor unit s communications cable is not connected to terminals IDU A and IDU B of the outdoor unit 10 Replace the control panel cover 152 Due to our policy of continuous product innovation some specifications may change without notificati
58. ressor PCB error _ Refrigerant charge is too high overcharge For detailed information on how to troubleshoot each error see the Multi V IV Service Manuals on www lg vrf com Indoor unit EPROM error LG Due to our policy of continuous product innovation some specifications may change without notification 169 DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp s po 10113 MULTI V IV System Installation Manual ERROR CODE TABLES MULTI Mm Table 58 Error Codes continued Error Code Deepen J o Deis y Master outdoor unit inverter board input overcurrent D RMS error e Overcurrent of outdoor unit inverter board PCB Slavel outdoor unit inverter board input overcurrent e Under voltage RMS error e Refrigerant flow restriction from defective LEV Slave2 outdoor unit inverter board input overcurrent e Refrigerant charge is too high overcharged dE RMS error 3 1 Low DC voltage sensed at the master outdoor unit inverter compressor DC link a Low voltage to the slave1 outdoor unit inverter DC voltage failed to charge on power up Start diagnosis at the compressor DC link CN inverter socket on the outdoor unit noise filter PCB 2 Low voltage to the slave2 outdoor unit inverter compressor DC link System has been turned off by the master outdoor unit high 2 4 master outdoor unt high pressure switch eror System has been
59. rge ducted and cassette model indoor units All Indoor units and heat recovery units for Heat Recovery systems only are installed properly supported and located indoors in a non corrosive environment Duct work installation completed ducted indoor units only Outdoor unit s gravity condensate drain line is connected and routed where it properly drained away or if installed in a mechanical room is connected and properly routed to a drain terminal Piping and Insulation Description Check Copper Over 5 8 inches Rigid ACR only 5 8 inches and under Can use softACR 15 silver brazing material only All refrigerant pipes and valves are insulated separately Insulation butts up against the walls of the indoor units and heat recovery units for Heat Recovery systems only No gaps or cracks Insulation was not compressed at clamps and hangers LG Y branch fittings or headers were used as per LATS Multi V report Optional Full port ball valves for all indoor units Schrader between the valve body and the indoor units Brazing Practices Description Use medical grade there are 4 available dry nitrogen for purging during brazin Minimum 3 4 maximum 1 condensate piping installed on indoor units material used is acceptable under local code Insulated as necessary to prevent condensation Check Installation For more information on any procedure refer to the detail
60. rminating wires of the same thickness follow the instructions demonstrated in the figures below e Firmly attach the wire secure in a way to prevent external forces Figure 58 Close up of a Typical Ring Terminal from being imparted on the terminal block Power Wiring SAS a Ring Terminal e Use an appropriately sized screwdriver for tightening the terminals e Do not overtighten the connections overtightening may damage a the terminals Figure 59 Proper and Improper Power Wiring Connections C opper Wire Terminate multiple power wires of Do not terminate two wires on Do not terminate different gauge the same gauge to both sides one side wires to a terminal block AWARNING If power wires are not properly terminated and firmly attached there is risk of fire electric shock and physical injury or death A Note e Never apply line voltage power to the communications cable terminal block If contact is made the PCBs may be damaged e Always include some allowance in the wiring length when terminating Provide some slack to facilitate removing the electrical panels while servicing 140 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ Al rights reserved LG is a registered trademark of LG Corp MULTI V ELECTRICAL SYSTEM INSTALLATION Power Wiring Dual Frame Outdoor Unit Wiring Configuratio
61. rol unit valve to the central control address of the connected indoor unit e SWO1M Selects the valve to address e SW03M Increases the ten 10 digit of the valve address e SW04M Increases the valve address by one 1 e SWO5M Rotary switch 2 Prerequisite for manual valve addressing The central control address of each indoor unit must be preset at its wired remote controller Table 56 Zone Setting Dip Switch No CTT Increases the ten 10 digit of the valve address Increases the valve address by one 1 Manual addressing zoned indoor units LG Due to our policy of continuous product innovation some specifications may change without notification 161 DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HUIUOISSIWIWO9 d1q MULTI V IV System Installation Manual PRE COMMISSIONING MULTI V Prepare the Refrigerant Piping System Verify a Pressure Leak Test Has Been Performed If not perform one now Use medical grade dry nitrogen and pressure test the refrigerant piping system to a minimum of 550 psi for a period of 24 hours Evacuate the Refrigerant Piping System e The outdoor unit may be put in vacuum mode Generally using the vacuum mode feature does assist with the vacuum process and is not necessary if a vacuum pump is connected to all charging ports at the outdoor unit s simultaneously as suggested herein See the Techni
62. ror e Verify the EPROM is present and in the socket correctly 6 0 2 Slave outdoor unit inverter PCB EPROM error e Check if all pins are in and are not bent 6 0 3 Slave2 outdoor unit inverter PCB EPROM error e Check if notch in the chip lines up with the arrow on the socket ggg High temperature at the master outdoor unit inverter heatsink outdoor unit inverter heatsink es E a N heatsink outdoor unit inverter heatsink Deiere heatsink outdoor unit inverter heatsink avel outdoor unit power error ave2 outdoor unit power error For detailed information on how to troubleshoot each error see the Multi V IV Service Manuals on www lg vrf com 172 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI Mm ERROR CODE TABLES Table 61 Error Codes continued 5 1 Master outdoor unit inverter heatsink temperature Disconnection or short circuit of master outdoor unit inverter sensor error heatsink temperature sensor 5 2 Slavel outdoor unit inverter heatsink temperature Disconnection or short circuit of slavel outdoor unit inverter sensor error heatsink temperature sensor 5 3 Slave2 outdoor unit inverter heatsink temperature Disconnection or short circuit of slave2 outdoor unit inverter sensor error heat
63. ry PCB and inverter PCB e Communication error between main PCB CN 29 and inverter PCB and inverter PCB e Check connections at both sockets e Inspect interconnecting cable for wear PCB and inverter PCB e Check if outdoor unit to indoor unit s communications cable aye ee has disconnected or short circuited Communication error between outdoor unit main PCB and indoor unit s PCB e Check A terminals are connected to indoor unit A and 3 5 on 3 X 3 cassette terminals B connect to B or 4 6 on 3 x 3 cas sette terminals Master outdoor unit three phase power R L1 S L2 T L3 is not connected properly reverse phase phase is missing Slavel outdoor unit three phase power R L1 S L2 T L3 is not connected properly reverse phase phase is missing Slave2 outdoor unit three phase power R L1 S L2 T L3 is not connected properly reverse phase phase is missing aster outdoor unit main PCB and inverter PCB Master outdoor unit inverter PCB is not receiving signal from communication error main PCB Slavel outdoor unit main PCB and inverter PCB Slavel outdoor unit inverter PCB is not receiving signal from communication error main PCB Slave2 outdoor unit main PCB and inverter PCB Slave2 outdoor unit inverter PCB is not receiving signal from communication error main PCB GE Outdoor unit series installation error A smaller outdoor unit is set as the master outdoor unit 6 0 1 Master outdoor unit inverter PCB EPROM er
64. s risen Slave Unit Master Unit E a fe C e a p S i 58 5 S 2 8 S a2 Vacuum ZS 5 pump S a Heat recovery ES emgeet unit E gt Liquid side dr Vapor pipe 7 5 Can S Indoor unit Si gt A A Liquid pipe S 7 E Indoor unit D 4 vapor side Liquid pipe Oo E Vapor pipe T D P d Z T High pressure Indoor unit quid pipe s vaporside NS Vapor pipe 7 Indoor unit Liquid pipe 164 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ Al rights reserved LG is a registered trademark of LG Corp MULTI V PRE COMMISSIONING Prepare Pre commissioning Package Documents Initiate a Request Prepare Pre commissioning Package Documents 1 A copy of the refrigerant piping system s shop drawing s generated by LATS Multi V pipe design software 2 Acopy of the pipe fitter s pipe changes and field notes 3 A verified copy of the As Built LATS Multi V Project file mtv that includes all changes noted by the pipe fitter s in 2 Notes should include changes to the line lengths and elbows used for each liquid line segment 4 A copy of a completed and verified Installation Checklist for the o
65. sink temperature sensor 6 7 1 Master outdoor unit fan has locked up Master outdoor unit air flow is restricted 16 7 Slavel outdoor unit fan has locked up Slave1 outdoor unit air flow is restricted 6 7 3 Slave2 outdoor unit fan has locked up Slave2 outdoor unit air flow is restricted isconnection or short circuit of master outdoor unit fan current aster outdoor unit fan CT sensor error etection CT sensor isconnection or short circuit of slavel outdoor unit fan current etection CT sensor isconnection or short circuit of slave2 outdoor unit fan current ave2 outdoor unit fan CT sensor error etection CT sensor 7 6 1 Master outdoor unit fan DC link high voltage error Master outdoor unit fan DC link high voltage error 7 6 2 Slavel outdoor unit fan DC link high voltage error Slavel outdoor unit fan DC link high voltage error 7 6 3 Slave2 outdoor unit fan DC link high voltage error Slave2 outdoor unit fan DC link high voltage error e Glen Master outdoorunittanovercuirent rr r aster outdoor unit fan currentis gt 10A for 208 230V units or S III A for 460V units avel outdoor unit fan current is gt 10A for 208 230V units or avel outdoor unit fan overcurrent error A for 460V units ave2 outdoor unit fan current is gt 10A for 208 230V units or HDD ave2 outdoor unit fan overcurrent error 5A for 460V units 7 9 1 Master outdoor unit fan operation failure
66. stallation Manual PRE COMMISSIONING MULTI V Preparing the Electrical System Run Self Diagnostics Check A Note H the indoor units have already been successfully assigned a system address skip this step and go to Assign Addresses to the Heat Recovery Units 1 Power all indoor units 2 Power all heat recovery units in conjunction with powering indoor units heat recovery systems only 3 Verify the outdoor units to indoor units heat recovery units communications cable is installed and terminated correctly 4 Verify the communications cable between outdoor unit frames is installed and terminated correctly Inspect terminals SODU B and SODU A at each outdoor unit 5 Verify that DIP Switches 6 and or 7 on the slave outdoor unit s were properly adjusted for the jobsite configuration 6 Power all outdoor units Order does not matter on multi frame installation 7 As the power is provided to the main printed circuit board PCB on the Master outdoor unit observe the LED e Wait The perimeter segments will flash in sequence for 45 seconds e Verify the microprocessor s outdoor unit configuration agrees with the submittal information approved the design engineer see Tables 49 to 51 e Confirm that this step has been completed by checking the box provided on the Record following the information as it is provided The date is provided in sequence and segment of the sequence will remain lit for two 2 seconds Table
67. t must be sealed with a brazed copper cap not with a plastic cap Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V PRE COMMISSIONING Setting up the Heat Recovery Unit Only For Heat Recovery Systems Table 54 Valve Group Settings Indoor unit a Indoor unit No Valve Group Indoor unit Control Indoor unit Indoor unit No 1 2 Valve Indoor unit Control Large capacity indoor unit bo Indoor unit No 2 3 Valve _ Large capacity indoor unit Control Indoor unit No 3 4 Valve Large capacity indoor unit Control Indoor unit Indoor unit No 1 2 Valve Control E Large capacity indoor unit Large capacity indoor unit No 3 4 Valve ge capacity indoor uni Control LG Due to our policy of continuous product innovation some specifications may change without notification 159 DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HUIUOISSIWIWO9 d1q MULTI V IV System Installation Manual PRE COMMISSIONING MULTI V Setting up the Heat Recovery Unit Only For Heat Recovery Systems If manual addressing the heat recovery unit valve address and the central control address
68. t unplug the group control cable from socket CN REMO on the indoor unit PCB board and plug the zone controller cable into the same socket 18 After all Slave indoor unit have addresses assigned go back to the Master indoor unit and restore power LG Due to our policy of continuous product innovation some specifications may change without notification 155 LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HUIUOISSIWIWO9 d1q MULTI V IV System Installation Manual PRE COMMISSIONING MULTI V Indoor Unit Temperature Sensing Strategy Air Balance Indoor Unit Temperature Sensing Location Selection For each indoor unit connected to a wired zone controller select a zone temperature sensing option Assign one of three methods for the indoor unit to sense the zone temperature Skip this step for indoor units controlled from a handheld wireless controller Record the sensing for each indoor unit on the Pre commissioning Device Configuration Worksheet There are three possible strategies 1 Use the unit mounted return air sensor or the optional remote wall mounted sensor 2 Use the sensor mounted in the zone controller 3 Sense the temperature at the unit mounted return air sensor or the optional remote wall mounted sensor and sensor mounted in the zone controller then control based on the temperature reading using the sensor that is farthest from set point Conduct
69. temperature TH HEX2 error t heat exchanger pipe temperature TH_HEX2 error t suction pipe temperature sensor it suction pipe temperature sensor it suction pipe temperature sensor it inverter compressor2 discharge temperature Sensor error Slavel outdoor un it inverter compressor2 discharge temperature sensor error Slave2 outdoor un it inverter compressor2 discharge temperature sensor error located near the heat exchanger in heating mode e Chec k the connection at the CN 34 soc ket connector tag TH_HEX2 on the outdoor unit PCB then check if thermistor is open or shorted e Thermistor has disconnected or short ci e Chec PCB e Thermistor has disconnected or short c Disconnection or short circuit of master outdoor unit inverter k the connection at the CN 34 soc rcuited ircuited compressor2 discharge temperature sensor Disconnection or short circuit of slavel outdoor unit inverter compressor2 discharge temperature sensor Disconnection or short circuit of slave2 outdoor unit inverter compressor2 discharge temperature sensor For detailed information on how to troubleshoot each error see the Multi V IV Service Manuals on www lg vrf com LG Due to our policy of continuous product innovation some specifications may change without notification DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Cor
70. the one closest to the outdoor unit Up to 16 boxes can be on a single system Possible settings in order of lowest to highest are 1 2 3 4 5 6 7 8 9 4 B C D E F A M e Addressing must be performed following the detailed steps above because port number 1 on the heat recovery unit addressed 0 will remain open during the auto pipe detect procedure If the indoor unit capacity connected to the portis relatively small compared with other units on the system the outdoor unit high head pressure safety will trip and shut down the unit during the procedure 3 Record the address assigned to each heat recovery unit in the pertinent column on the Pre Commissioning Device Configuration Worksheet SWO05M Function Rotary Switch for Addressing Heat Recovery Units SWO5M must be set to 0 Figure 71 Adjusting the Heat Recovery Unit Addresses when installing only one heat recovery unit e When installing multiple heat recovery units address each AJB AJB AJB unit with sequentially increas ing numbers starting from 0 GOR GOR GOR e LG Due to our policy of continuous product innovation some specifications may change without notification 157 LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp HUIUOISSIWIWO9 a1q MULTI V IV System Installation Manual PRE COMMISSIONING MULTI V Setting Up the Heat Recovery Unit Only For H
71. tions may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI V Table 63 Error Codes continued ErrorCode Description 115 1 Master outdoor unit lower heat exchanger tempera ture sensor error 2 5 Slavel outdoor unit lower heat exchanger tempera ture sensor error 5 ture sensor error Communication error between master outdoor unit external board main and sub MICOMs Communication error between slavel outdoor unit external board main and sub MICOMs ERROR CODE TABLES Details e Check the connection at the CN 35 socket on the outdoor unit PCB e Thermistor has disconnected or short circuited Disconnection or short circuit of slavel outdoor unit lower heat exchanger temperature sensor Slave2 outdoor unit lower heat exchanger tempera Disconnection or short circuit of slave2 outdoor unit lower heat exchanger temperature sensor Master outdoor unit external board main to sub MICOMs communication failure Slavel outdoor unit external board main to sub MICOMs communication failure Communication error between slave2 outdoor unit Slave2 outdoor unit external board main to sub MICOMs external board main and sub MICOMs communication failure 3 1 Excessive increase in master outdoor unit fan heat System has shut off because master outdoor unit fan heatsink sink temperature temperature is
72. to low suction pressure Master outdoor unit remained below the low condenser ratio limit for three 3 minutes Slavel outdoor unit remained below the low condenser ratio limit for three 3 minutes Slave2 outdoor unit remained below the low condenser ratio limit for three 3 minutes Table 59 Error Codes continued Error Code Description Details 3 5 12 Master outdoor unit low side pressure transducer senses pressure below allowable limits 3 5 2 Slavel outdoor unit low side pressure transducer senses pressure below allowable limits Slavel outdoor unit low side pressure transducer senses pressure below allowable limits Master outdoor unit fell below low condenser com pression ratio limit Slavel outdoor unit fell below low condenser com pression ratio limit Ge ave2 outdoor unit fell below low condenser ratio limit 1 Master outdoor unit inverter compressor current trans ducer CT sensor error SR avel outdoor unit inverter compressor current trans Outdoor unit inverter compressor current transducer CT detec ducer CT sensor error tion sensor has disconnected or short circuited Slave2 outdoor unit inverter compressor current trans ducer CT sensor error BBE Master outdoor unit inverter compressorl discharge pipe temperature sensor error i e e Check the connection at the CN 34 socket on the outdoor unit Slavel outdoor unit inverter compressor1 discharge PCB pipe temperature sensor error iti e Thermis
73. tor has disconnected or short circuited Slave2 outdoor unit inverter compressor1 discharge pipe temperature sensor error E Master outdoor unit low pressure transducer error e Check the connection at the CN 30 socket on the outdoor unit 4 2 2 Slavel outdoor unit low pressure transducer error PCB 1 4 2 3 Slave2 outdoor unit low pressure transducer error Transducer has disconnected or short circuited 4 3 1 Master outdoor unit high pressure transducer error 4 3 2 Slavel outdoor unit high pressure transducer error PCB 4 3 3 Slave2 outdoor unit high pressure transducer error e Transducer has disconnected or short circuited 4 4 1 Master outdoor unit ambient temperature sensor error e Check the connection at the CN 33 socket on the outdoor unit 4 4 2 Slavel outdoor unit ambient temperature sensor error PCB 4 4 3 Slave2 outdoor unit ambient temperature sensor error Thermistor has disconnected or short circuited Check the connection at the CN 31 socket on the outdoor uni S9po0 d 10113 p0p aster outdoor unit heat exchanger pipe temperature e Check suction sensor in cooling mode check hot gas sensor sensor front side Slavel outdoor uni sensor front side Slave2 outdoor uni sensor front side Master outdoor uni error Slavel outdoor un error Slave2 outdoor un error Master outdoor un afre HUE GE TH HEX2 error t heat exchanger pipe
74. turned off by the slavel outdoor unit high 2 4 2 steven outioor unt nigh pressure sh eror api System has been turned off by the slave2 outdoor unit high 2 5 1 Input voltage to the master outdoor unit is too high or Master outdoor unit has an input voltage of 140V or 300V for 208 too low 230V units or an input voltage of lt 270V or 2487V for 460V units Input voltage to the slavel outdoor unit is too high or Slave1 outdoor unit has an input voltage of lt 140V or 2300V for 208 too low 230V units or an input voltage of lt 270V or 2487V for 460V units Input voltage to the slave2 outdoor unit is too high or Slave2 outdoor unit has an input voltage of lt 140V or 2300V for 208 f too low 230V units or an input voltage of lt 270V or 2487V for 460V units 2 1 Master outdoor unit inverter compressor operation error Ss jeji P p d operation failure due to outdoor unit inverter compressor problem 2 8 1 Master outdoor unit inverter DC link high voltage error Se l 2 8 2 Slavel outdoor unit inverter DC link high voltage error Ee because outdoor unit inverter PCB DC link 2 8 3 Slave2 outdoor unit inverter DC link high voltage error 9 a 2 9 1 Master outdoor unit inverter compressor overcurrent error 2 9 2 Slavel outdoor unit inverter compressor overcurrent error Outdoor unit inverter compressor current draw is too high 2 9 3 Slave2 outdoor unit inverter compressor o
75. utdoor unit and heat recovery unit C Heat recovery unit Heat recovery unit number Heat Recovery Unit Outdoor unit does not receive signal from heat recovery unit For detailed information on how to troubleshoot each error see the Multi V IV Service Manuals on www lg vrf com LG Due to our policy of continuous product innovation some specifications may change without notification 175 LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp s po 10113 d 97 Jo gt pa uspen pasa e a C7L Essai SHU e IN SYD Poove ug ul ny SN aLa OW uORe YHOU yom auey Aeu suopeoypads auos LOOK pnpod SNONUQUOD JO Aod no OH anad E 6T9IOETOZ Aal DIE E dno13 e ul V wnipaw wo 4309 9Zz vY S ssauppy i A oaugme IPISEINEIN 901 Y N 10 101 Uu09 EE adAL OI wooy se yun DEES uonoun4 GI 4aquiaw enue wa ss anjen Bugs ue suipjing S gt dno19 dno19 Ge paisn py s NCI pewa Ud jlewa Yyd aweN y2 1 WOD da1d aweN ASU Paloid d awey Auedwos 1039e13U0D YI N sSasppe dI 2135 mews Jy ai wa3shs 34eq GI Suipjing SuUEN Daloid yS LOoM UO PEANSIYUOD BIIAVQ SUIUOISSIWIWOD a1d A NINN 91 MULTI V u INSTALLATION CHECKLIST La PAGE 1 Major Component Rough In Description Check All Multi V outdoor units are connected properly per local code and the product installation procedures All literature and bagged accessories have been removed from the fan discha
76. utdoor unit fan DC link voltage is lt 140V for 208 230V alofia Master outdoor unit fan DC link low SE error units or lt 380V for 460V units Slavel outdoor unit fan DC link voltage is lt 140V for 208 230V 1 fof7 2 s avel outdoor unit fan DC link low voltage error units or lt 380V for 460V units Slave2 outdoor unit fan DC link voltage is lt 140V for 208 230V HHH ave2 outdoor unit fan DC link low voltage error units or lt 380V for 460V units aster outdoor unit liquid pipe temperature sensor a e Check the connection at the CN 32 socket on the outdoor unit t liquid pipe temperature sensor PCB it liquid pipe temperature sensor e Thermistor has disconnected or short circuited 1 Master outdoor unit subcooling inlet temperature sen sor error l Check the connection at the CN 35 socket on the outdoor unit Slavel outdoor unit subcooling inlet temperature sen pcp sor error 3 Slave2 outdoor unit subcooling inlet temperature sen sor error Master outdoor unit subcooling outlet temperature sensor error e Check the connection at the CN 32 socket on the outdoor unit Slavel outdoor unit subcooling outlet temperature PCB sensor error 3 Slave2 outdoor unit subcooling outlet temperature sensor error 1 1 6 2 Master outdoorunitoi leyels nsor ertor EE or short circuit of master outdoor unit oil level afael S avel outdoorunitoil lev lisensor rror Ra or short circuit of slave1 outdoor unit oil level PRUE sia
77. utdoor unit s indoor units heat recovery units ERVs Air Cleaners and Control Devices Correct any needing attention before continuing 5 A completed Pre commissioning Device Configuration Worksheet 6 A completed copy of the Pre commissioning Checklist 7 Ifan AC Smart Central Controller is provided and it is to be connected to the building network record the IP Address on the Pre commis sioning Device Configuration Worksheet Optional but Highly Recommended Itis always best if the air balance is completed prior to a request for a commissioning agent to insure the air volume delivered at each indoor unit is per project specifications The commissioning agent is not responsible for setting the indoor unit fan speed or ensure the air volume delivered at each indoor unit is per project specifications Excessive or restricted airflow may impact the ability of the commissioning agent to successfully complete system commissioning Upon completion of the air balance the report should include the adjusted indoor unit s fan speed Le fan setting value set by the Test and Balance technician to deliver cataloged air volume CFM at jobsite static pressure conditions Initiate a Request for a System Commissioning Contact your LG Applied Representative s Project Manager or your account representative and request a System Commissioning Provide all the documents listed in Prepare Pre commssioning Package section above System Commissi
78. ve outdoor unitoil levelsensor error E or short circuit of slave2 outdoor unit oil level 5 1 Communication error between master outdoor unit Master outdoor unit main board to external board communica main board and external board tion failure gt Communication error between slavel outdoor unit Slavel outdoor unit main board to external board communica main board and external board tion failure Communication error between slave2 outdoor unit Slave2 outdoor unit main board to external board communica main board and external board tion failure H Iran board and extemal boars __ Master outdoor unit operation mode conversion error 1 115 1 2 Slavel outdoor unit operation mode conversion error Pressure imbalance between outdoor units 1115 1 3 leave outdoor unit operation mode conversion error pppER aster outdoor unit upper heat exchanger temperature ea Check the connection at the CN 32 socket on the outdoor unit 1 5 3 2 avel outdoor unit upper heat exchanger temperature pcp sensor error BABA ave outdoor unit upper heat exchanger temperature Thermistor has disconnected or short circuited sensor error e Thermistor has disconnected or short circuited e Thermistor has disconnected or short circuited For detailed information on how to troubleshoot each error see the Multi V IV Service Manuals on www lg vrf com 174 Due to our policy of continuous product innovation some specifica
79. vercurrent error 3 2 1 Excessive increase in master outdoor unit inverter com pressorl gas discharge temperature 3 212 Excessive increase in slavel outdoor unit inverter com Shutdown due to excessive discharge gas temperature pressorl gas discharge temperature e Check the fan and coils Excessive increase in slave2 outdoor unit inverter com pressorl gas discharge temperature Excessive increase in master outdoor unit inverter com pressor2 gas discharge temperature Excessive increase in slavel outdoor unit inverter com Shutdown due to excessive discharge gas temperature pressor2 gas discharge temperature e Check the fan and coils 3 3 3 Excessive increase in slave2 outdoor unit inverter com pressor2 gas discharge temperature 3 1 Master outdoor unit compressor high pressure safety tripped 3 gt Slavel outdoor unit compressor high pressure safety Shutdown due to excessive discharge gas temperature tripped e Check the fan and coils Bae Slave2 outdoor unit compressor high pressure safety tripped For detailed information on how to troubleshoot each error see the Multi V IV Service Manuals on www lg vrf com 170 Due to our policy of continuous product innovation some specifications may change without notification LG DLG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp MULTI Mm ERROR CODE TABLES e Shutdown due

Download Pdf Manuals

Related Search

LG_Series_IV_ODU AirCooled_InstallationManual Part2

Related Contents

Azden 221R Microphone User Manual  Scarica la scheda prodotto  Safety 1st Compa'City  CW-E60 DISC DESIGNER JA  BEDIENUNGSANLEITUNG KONSERVIERUNGSSCHRÄNKE  ULTIMATE NES™ REMIX 1 Informações Importantes Primeiros  PREFACE - Alfalink.co.id    PosiTector - DeFelsko Corporation    

Copyright © All rights reserved. Failed to retrieve file