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Window Air Conditioner SVC MANUAL(Exploded

1. LGE Internal Use Only 2 1 2 CONTROL BOX 1 Remove the front grille Refer to section 2 1 1 2 Remove the two screws which fasten the control box See Figure 2 3 Pull the control box from the Air guide 4 Remove the control box cover See Figure 3 5 Disconnect wire housings on the control box 6 Pull the control box assembly out from the unit See Figure 4 7 Re install the components by referring to the removal procedure Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 12 T WH Figure 2 SS 2 PC Figure 3 Figure 4 LGE Internal Use Only 2 2 AIR HANDLING PARTS 2 2 1 ELECTRIC HEATER ELECTRIC HEATER MODEL ONLY 1 Remove the front grille Refer to section 2 1 1 2 Remove the control box assembly Refer to section 2 1 2 3 Remove the 4 screws which fasten the Evaporator See Figure 5 4 Remove the top cover assembly net steel brace See Figure 6 ay N UM xu 5 Remove the 6 screws which fasten the Air guide 6 Pull the Air guide assembly out from the unit See Figure 7 zz KE HLE Siae ilg 7 7 Remove 2 screws which fasten the electric heater in the left hand side 8 Pull the electric h
2. COMPLAINT CAUSE REMEDY Compressor will not run but fan motor runs Voltage Check voltage See the limits on the preceding page If not within limits call an electrician Wiring Check the wire connections if loose repair or replace the terminal If wires are off refer to wiring diagram for identification and replace Check wire locations If not per wiring diagram correct Rotary Check for continuity refer to the wiring diagram for terminal identification Replace the switch if circuit is open Thermostat Check the position of knob If not at the coldest setting advance the knob to this setting and restart unit Check continuity of the thermostat Replace thermostat if circuit is open Capacitor Discharge capacitor before servicing Check the capacitor Replace if not within 10 of manufacturers rating Replace if shorted open or damaged Compressor Check the compressor for open circuit or ground If open or grounded replace the compressor Overload Check the compressor overload if externally mounted Replace if open If the compressor temperature is high remove the overload cool it and retest ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM 208 230V 187V 253V Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 47 LGE Internal U
3. ese Jo jne2 l3duvo 30 dOL HO uOO 14 Q3HSINIJ Su3HLO J1oVL1d323U TIVM LINGNOD 5 YAMOd 2 30 dOl 30013 Q3HSINIJ 3SVO TIVM uoodrino YATIVLSNI Ad 3355 ONILNNOW LLav 8 L 07 8 L ET 88 w E ET l 8VH ES NC xx 1nvo x 1nvo TALNIT 19315 2 7 195 p105 NOLLVTIVLSNI 3GIS Q3 TIV L3G 335 TIVM LGE Internal Use Only 24 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 3 2 3 UNIT INSTALLATION 1 Remove the shipping screw from the ventilation door See Figure 17 2 Remove the front gille by pulling it out at the bottom to release it then lift it up along the unit top front See Figure 18 3 Slide the unit into the wall sleeve and secure with 6 screws through the unit flange holes See Figure 19 4 Reinstall the front grille by hooking the top over the unit top then pushing it in at the bottom See Figure 20 Copyright 2007 LG Electronics Inc All right reserved 25 Only for training and service purposes Figure 18 Figure 20 LGE Internal Use Only 3 3 ELECTRICAL REQUIREMENTS 3 3 1 ELECTRICAL DATA FOR 230 208V MODEL N CAUTION 1 Do not use an extension cord with this unit 2 When the unit is in
4. 13 3 4 16 16 23 4 Wall Sleeve 23 4 Inside Edge Y Back of 25 8 Left End View 5 8 Ground Screw Location Top View Knockouts In Bottom Receptacle Provided Inside subbase 3 1 16 Accessory 13 7 8 352 mm 76mm 20 5 16 515 5 _ 15 E Y so 4 1 80 91 h n 3l a E or E c5 Concentric Knockouts In Rear Front View Figure 59 Wiring Diagram 2 50 mm Max Adjustment d b 2 Field Wiring Line Voltage lh BLK RED NEMA 6 20R 7 208 Receptacle Receptacle Q TB3 b d b i x d Field Wiring NEMA 6 30R NEMA 7 30R Line Voltage Receptacle Receptacle 230 208 VAC Field Schematic 265 VAC Field Schematic Figure 60 NEMA Plug Configurations Voltage Unit Plug Subbase Receptacle 230 208 NEMA6 15AMP S 5 5 S NEMA6 20AMP 265 NEMA7 20AMP S 5 7 20 230 208 20 Gs Gs NEMA6 20AMP 265 7 20 IN 5 S S NEMA7 20AMP 230 208 NEMA6 30AMP Gs Q 5 G9 S NEMA6 30AMP 265 NEMA7 30AMP S E 69 R NEMA7 30AMP LGE Internal Use Only 5 1 OUTSIDE
5. 7 Re install the components by referring to notes See Figure 20 2 4 3 CAPILLARY TUBE 1 After discharging the refrigerant completely unbraze the interconnecting tube at the capillary tube 2 Remove the capillary tube 3 Re install the components by referring to notes Copyright 2007 LG Electronics Inc All right reserved 17 Only for training and service purposes Figure 19 Figure 28 SX NN LGE Internal Use Only NOTES Replacement of the refrigeration cycle 1 When replacing the refrigeration cycle be sure to 6 Recharge as follows discharge the refrigerant system using a 1 Refrigeration cycle systems are charged from the refrigerant recovery system high side If the total charge cannot be put If there is no valve to attach the recovery system in the high side the balance will be put in the install one such as a WATCO A 1 before venting suction line through the access valve which you the refrigerant Leave the valve in place after installed as the system was opened servicing the system 2 Connect the charging cylinder as shown in Figure 2 After discharging the unit completely remove the 16B desired component and unbraze the pinch off With valve C open discharge the hose at the tubes manifold connection 3 Solder service valves into the pinch off tube ports 3 Open val
6. C 86 F 30 0 C 54 F 12 2 86 F 30 0 C ON OFF OFF 56 F 18 3 C 86 F 30 0 C 54 F 12 2 C 84 F 28 9 C OFF ON OFF 58 F 14 4 C 86 F 30 0 C 54 F 12 2 C 82 F 27 8 C ON ON OFF 60 15 5 C 86 F 30 0 C 54 F 12 2 C 80 F 26 7 C OFF OFF ON 62 16 6 C 86 F 30 0 C 54 F 12 2 C 78 F 25 5 C ON OFF ON 64 17 7 86 F 30 0 54 12 2 76 F 24 4 OFF ON ON 66 F 18 9 C 86 F 30 0 C 54 F 12 2 C 74 F 23 3 C ON ON ON 68 20 0 C 86 F 30 0 C 54 F 12 2 C 72 F 22 2 C 6 7 Unit Type OFF OFF Cooling Electric Heater Heat Pump OFF ON Cooling Electric Heater ON OFF Heat Pump Only ON ON Cooling Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only REMOVING THE GRILLE Additional controls are available after removing the front grille and option cover of control box To remove the front grille pull out the bottom of front grille and then lift up To replace the front grille place the tabs over the top of the unit and push the bottom of front grille until the clips snap into place ADDITIONAL CONTROLS The additional controls are located behind the option cover of control box The standard settings will be in the OFF position The authorized service man has to check switches and ensure the switch
7. Drill four 1 8 inch holes in wall sleeve to line up with holes in subbase Figure 57 Location D next page Mount subbase to wall sleeve with four sheet metal screws provided with kit Figure 57 Location D next page 5 Remove the left front cover from the subbase Figure 57 Part A next page 6 Position skirting on each side of wall sleeve to prevent the entry of foreign materials Trim skirting to desired length Attach skirting with four sheet metal screws provided with kit Figure 57 Location E next page Wire subbase for appropriate voltage Figure 59 next page 41 LGE Internal Use Only Note Figure 58 Dimensions The proper subbase must be ordered to obtain the correct electrical receptacle Figure 60 8 After wiring is complete mount covers A and F to the subbase with provided screws Figure 57 9 When installing optional accessories to the subbase refer to each installation instruction for that accessory Figure 55 Figure 57 Part Location Identification Part Location Identification Left Front Cover Right Front Cover Front Cord Panel Wall Sleeve Hole Location Skirting Hole Location m imijo oj u Right Cover Assembly Wall Sleeve Wiring Access Low Voltage Compartment Copyright 2007 LG Electronics Inc All right reserved 42 Only for training and service purposes Wall Sleeve Outdoor Side
8. generated during cooling operation in accordance with ARI standards and actually uses this water for maximum unit efficiency A level unit will also insure proper performance of the Internal Condensate Removal ICR system optional on heat pump units 2 The wall case should be secured to the wall at both sides Use a minimum of two screws or other fastening device on each side See Figure 2 page 24 Mark the wall case on each side 2 from the bottom and 2 from the top at a point where basic wall structure is located Drill wall case and use fasteners appropriate for wall construction All holes for fasteners in the side of the wall case must be at least 2 up from the bottom of the wall case Never locate screws or put other holes in the bottom of the wall case If the wall opening is greater than the case dimensions spacers must be used on the sides between the wall case and the wall support structure to prevent distorting the wall case 3 Caulk or gasket the entire opening on the outside between the wall case and exterior wall surface 4 sides to provide total water and air seal 4 Caulk or gasket room side opening between wall case and interior wall surface 4 sides Opening beneath or around the wall case can allow outdoor air to leak into the room resulting in increased operating costs and improper room temperature control Care should be taken in location of electrical supply entry in relationship to wall sleeve to assure
9. 18 4 60 Heat Exchanger Evaporator Rows Column FPI 2R 10C 18FPI Condensor Rows Column FPI 17 20FPI Power Supply Cable Power Cord No mm 3 2 1 Dimensions W H D mm 1 066 406 505 inch 42 16 19 7 8 Net Weight kg lbs 50 2 110 7 Tool Code Chassis YA Features Temperature Control Thermistor Energy Saver Mode Prefilter washable anti fungus Plasma Filter Steps Fan Cool Heat 2 2 2 Airflow Direction Control up amp down Manual Airflow Direction Control left amp right Remote Controller Type Wall Thermostat Setting Temperature Cooling 54 F 86 12 2 30 C Range Heating 54 F 86 F 12 2 C 30 C Auto Operation Micom Control Panel Touch Type Micom Timer 12h On Off Air Discharge Rear Air Ventilation Defrost Control Hot Start Look Look Cabinet Type Chassis Type Slide In Out Note Applied No relation Special Function Electric Heater For circuit breaker rating please confirm to local standards wherever necessary Some of functions are slightly different depending upon models The specification may be subject to change without prior notice for purpose of improvement Copyright 2007 LG Electronics Inc All right reserved Only for trai
10. CONNECTIONS Wiring Schematic for Straight Cool Unit C9 o w s CONTROL BOARD CONNECTIONS THERMOSTAT CONNECTIONS 4 LGE Internal Use Only P disass Before the following disassembly POWER SWITCH is set to OFF and disconnected the power cord 2 1 MECHANICAL PARTS 2 1 1 FRONT GRILLE 1 Remove the front grille See Figure 1 2 To remove the front grille pull out the bottom of the front grille and then lift up Re install the component by referring to the removal procedure 3 To replace the front grille place the tabs over the top of the unit and push the bottom of front grille until the clips snap into place This Room Air Conditioner PTAC discharges air from the top of the unit through reversible 2 position discharge grille louvers The unit is shipped from the factory with the discharge grille louvers at an angle of 40 off vertical In the alternate position the louvers will be at an angle of 15 off vertical To adjust air direction remove the front grille Remove the 4 screws that fasten the discharge grille to the front grille Flip the discharge grille 180 then reattach the discharge grille to the front grille with 4 screws Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 11 Figure 1
11. DIMENSIONS 1 066mm 42 406mm 16 505mm 20 406mm 16 5 2 PIPING SYSTEM Following is a brief description of the important components and their functions in the refrigeration system Refer to Figure 61 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle ROOM AIR CONDITIONER CYCLE OF REFRIGERATION EVAPORATOR COILS CONDENSER COILS SUCTION LIME VAPOR INLET COMPLETE LIQUID BOIL OFF POINT COOL LOW PRESSURE VAPOR HOT DISCHARGED AIR COOLED AIR 4 ROOM AIR HEAT LOAD OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH 4 gt OMPRESSOI m LIQUID PRESSURE LIQUID OUTLET LIQUID REFRIGERANT i Z HiGH PRESSURE VAPOR CAPILLARY TUBE w S B 1 0 VAPOR Figure 60 Copyright 2007 LG Electronics Inc All right reserved 43 9 LGE Internal Use Only Only for training and service purposes 5 3 TROUBLESHOOTING GUIDE In general possible trouble is classified in two causes The one is Starting Failure which is caused from an electrical defect and the other is Ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application Unit is running but cooling is ineffective Ineffec
12. Only 2 2 4 SHROUD 1 2 3 4 2 Remove the axial fan Refer to section 2 2 3 Remove the 4 screws which fasten the condenser with the shroud and the basepan See Figure 11 Remove the shroud Re install the component by referring to the removal procedure 3 ELECTRICAL PARTS 2 3 1 OUTDOOR MOTOR 1 2 3 4 5 Remove the clamp cord and disconnect a wire housing in control box Refer to section 2 1 2 Remove the axial fan Refer to section 2 2 3 Remove the 2 screws which fasten the motor See Figure 12 Remove the motor Re install the component by referring to the removal procedure above 2 3 2 INDOOR MOTOR Refer to section 2 2 2 2 3 3 COMPRESSOR 1 Discharge the refrigerant system using a refrigerant recovery system If there is no valve to attach the recovery system install one such as a WATCO A 1 before venting the refrigerant Leave the valve in place after servicing the system Disconnect the 3 leads from the compressor After purging the unit completely unbraze the suction and discharge tubes at the compressor connections Remove the 3 nuts and the 3 washers which fasten the compressor See Figure 15 Remove the compressor Re instill the components by referring to the removal procedure above 2 3 4 CAPACITOR 1 Remove the control box Refer to section 2 1 2 2 Remove 1 screw and disconnect the leads which connected to the box ty
13. access to receptacle or junction box once unit is installed 22 LGE Internal Use Only FRAMING FOR WALL CASE BRICK VENEER AND FRAME CONSTRUCTION MAIN STUD JACK STUDS HEADER 4 x 4 OR 2 2 x4 ON EDGE 16 1 4 MIN ADJUSTABLE FRAMING TO SECURE THIS DIMENSION JACK STUD CRIPPLE FINISHED FLOOR SUB FLOOR Note Do not remove the stiffener support from inside the wall case until the chassis is to be installled Figure 1 FASTENING WALL CASE MAIN STUDS MOUNTING SCREW HOLE NO HOLES PERMITTED IN BOTTOM OF CASE NO HOLES PERMITTED IN BOTTOM OF CASE JACK STUD MAIN STUD Framing detail for this construction is as shown in Figure 1 Note use of lintel under first course of brick above theZoneline case Choice of attachment devices Do not use the case as alintel Mounting screw through both ends of case or thetop holes shown are tobe made by the installer Mounting screw holes and attachment devices by installer Figure 2 Copyright 2007 LG Electronics Inc All right reserved 23 Only for training and service purposes LGE Internal Use Only AY LNA SLVNYSL1V ALINGNOD AlddNAS A 1NV VOZ vu 3sva ans J0U93X3 pue sonau T y sulof 31 4n0J ese JO 4e3euuued Jne q9 YooaLNo YATIVLSNI A8 3355 ONILNNOW TALNIT po32euuo eseg qns 40193X3 pue 10u93U sutof 31 Sopis 1
14. as xx 8 Be ga T CN DISP 1 AH 2i Au EOT lV3H AH Z NO 190 t 5 E B xx oP roncon SUBPWB ASM P NO 6871A00086 CNTRANS os 99888888 5 BDIFDTDRIDATMSTWS GG O WY AC Unit Typev2 _ 888888 CN AUX TRANS 878 5 CAPACITOR P NO 3850A20594H CN DISP1 CN ODT CN DISP2 CN IDAT By lt DEC CN IDPT CN AUX CN THERMO S CN LINK CN IDF CN 4WAY CN ODF CN ICR Copyright 2007 LG Electronics Inc All right reserved 50 n LGE Internal Use Only Only for training and service purposes Internal OLP type compressors Note Please ensure GCSC since the replacement parts may be changed depending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com Copyright 2007 LG Electronics Inc All right reserved 51 Only for training and service purposes LGE Internal Use Only P NO MFL42137102 NOV 2007
15. condensate produced and condensate would then drip from the outside of the wall sleeve If this condensation is unacceptable then a drain system including factory approved drain kit for the wall sleeve should be installed Receiving Upon receipt of the product inspect the shipping carton for signs of visible damage Report any damage or shortage to the carrier and note it on the delivery receipt Unit must be stored in its original shipping carton in a dry secure place prior to its installation and use Installation The installation and servicing of the equipment referred to in this booklet should be performed by qualified experienced technicians AN WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Remove front plastic cover by rotating bottom outward and then lifting up and out from chassis Unplug and remove the chassis from the wallsleeve Movethe chassis where the front and back of the chassis can be easily accessed Remove the wire junction box cover by remo
16. connect tabs are toward the center of the unit Attach fuse holders using the screws and nuts provided Figure 48 Remove both power cord leads one lead from the capacitor and one from the electronic board Install one power cord lead on the center terminal of one fuse holder Figure 49 7 Install the remaining power cord lead on the center terminal of the second fuse holder Figure 49 Connect BK 10 wire from the side terminal of one fuse holder to the Line terminal on the electronic board Figure 48 Connect RD 10 wire from the side terminal of the other fuse holder to the common C terminal on the capacitor Figure 49 10 Tilt control panel back to original location being careful not to pinch any wires Align the control panel with the cover and screw panels into place with original screws Replace escutcheon and control knobs Fuse Holder Kit Installation With Subbase See previous section for installation in the control panel 1 Remove both knockouts at the fuse holder location Figure 50 2 Install the fuse holders using screws provided The side connector tab on the fuse holders should be towards the left 3 Connect a stripped BK 9 wire to the center of the quick connect tab of the fuse holders Wire nut the other end of this wire to the black field connection wire TB1 Figure 51 4 Connect the other stripped BK 9 wire to the quick connect tab on the side of t
17. damage Report any damage or shortage to the carrier and note it on the delivery receipt Unit must be stored in its original shipping carton in a dry secure place prior to its installation and use Installation The installation and servicing of the equipment referred to in this booklet should be performed by qualified experienced technicians Fuse Holder Kit Installation Without Subbase 1 Remove front by rotating bottom outward and then lifting up and out from chassis Figure 48 Control Panel Mode Switch Thermostat before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Remove two screws to gain access inside Control Panel Important Note The unit OFF switch does not disconnect all electrical power to this unit Fuse Holder Knockouts under panel Copyright 2007 LG Electronics Inc All right reserved 38 Only for training and service purposes LGE Internal Use Only To access inside the control panel after removing the knobs and escutcheon remove the screws holding panel in position Tilt control panel forward being careful not to pinch any wires Figure 48 As viewed from the front remove both knockouts on the control panel 4 Insert two fuse holders from the front The fuse holders should be oriented so the quick
18. the OFF position the power supply to the electrical controls is still energized 3 Disconnect the power to the unit before servicing the unit 4 Remove the power cord from the wall receptacle 5 Remove or turn off the protective device fuses or circuit breaker Wirings including installation of the receptacle must comply with the NEC and local codes local regulations FUSE Use a time delay fuse or circuit breaker Refer to the nameplate for proper power supply requirements 3 3 2 ELECTRICAL SAFETY IMPORTANT GROUNDING INSTRUCTIONS Tandem 15A Perpendicular 20A Large Tandem 30A 230 208 volt receptacle configuration The air conditioner has a three prong grounding plug on its power supply cord which must be plugged into properly grounded three prong wall receptacle for your protection against possible shock hazard FUSE Use a time delay fuse or circuit breaker Refer to the nameplate for proper power supply requirements 208 230 and 208 230 VOLT UNITS These units are equipped with a three prong grounding plug on the power supply cord which must be plugged into a matching properly grounded three prong wall receptacle for your protection against possible shock hazard If such an outlet is not present one must be installed by a qualified electrician in accordance with the National Electrical Code and local codes and ordinances NOTE DO NOT USE AN EXTENSION CORD on 208 230 and 208 230 Volt units Copyright 2
19. the necessity of rework fillers Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes framing moving electrical outlets and other expensive modifications For existing construction it is important that carpentry masonry and electrical work be performed by competent qualified personnel Since installations in existing construction may involve removal of building material from the structure locating the wall case must be done correctly 21 LGE Internal Use Only 3 2 2 PREPARATION OF THE FRONT GRILLE Carefully remove shipping tape from the front grille Q y YG y Shipping Tape Brick Frame Stucco and Shingle Construction For new construction the opening for the wall case should be framed and the wall case inserted into the opening during construction Lintels should be used when the building material is heavy and is not self supporting such as brick The wall case will fit an opening of six courses of standard brick or five courses of jumbo brick Wall framing in this type construction is normally on 16 centers and the wall case will fit a framed opening spanning three 16 O C 2 x 4 stud spaces For existing construction the indoor and outdoor wall will need to be cut out allowing for clearances of 1 8 on all sides of the wall case Work should begin on the inside wall Cut the correct dimensions and mark using drill holes the outside wal
20. 0 2 gr See Detail A dum Ji 77 Sleeve overflow port VES Do not close up this port gt E9 Gasket 2 p ET 5 Blank off Plate 2 ss 4 Mounting Screws s Wall Sleeve Bottom a l 1 2 Outdoor Drain Fitting O Lute Screws 2 Detail A 33 LGE Internal Use Only Indoor Drain Kit Installation The internal drain is installed on the bottom of the wall sleeve when it is required to drain the condensate into a drain System inside of the building The components of the wall sleeve drain kit are shown in Detail A Use components C 2 D E mounting screws 6 and the Outdoor drain fitting 1 The components D E and drain fitting of the kit are mounted on the bottom of the wall sleeve prior to the installation of the sleeve It may be located in a feasible area on the bottom of the sleeve which is inside of the room except when a subbase is used When a subbase is installed the drain may be a minimum of 3 1 2 from the front flange of the wall sleeve The minimum clearance should provide adequate clearance for the subbase see Figures 40 and 41 Cut out the template in the lower right hand corner of these instructions to locate the field drilled holes Two to mount the plate and one for the Outdoor drain fitting See Detail A on how the components have to be installed after the holes are drilled in the bottom of the wall sleeve If the drain fitting is not connected to
21. 007 LG Electronics Inc All right reserved 26 Only for training and service purposes LGE Internal Use Only 4 Field ir Note The installation and servicing of this equipment must be performed by qualifieed experienced technicians NOTICE Warnings and Cautions appear at appropriate sections throughout this manual Read these carefully N WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It may also be used to alert against unsafe practices CAUTION Indicates a situation that may result in equipment or property damage only accidents Control Panel Key Lock 2 Remove existing door assembly by lifting door halfway and Part No AYCP101 using both hands bow door just enough for door hinge pins to slide out of mating holes Figure 22 Figure 22 Door Removal Description The Key Lock kit prevents tampering of the controls used to set temperatures and heating or cooling functions Receiving Upon receipt of the product inspect shipping carton for signs of visible damage Report any damage or shortage to the carrier and note it on the delivery receipt Unit must be stored in its original shipping carton in a dry secure place prior to its installation and use 3 Install the new door assembly with the key loc
22. Box Location Control Panel E AKN Base Pan Bracket Figure 47 Electrical Wiring Routing Right Side of Chassis Wire Tie 3 16 Inch Diamenter Hole Electrical Supply Wires Back of Control Panel 37 LGE Internal Use Only Fuse Holder Kit Part No AYFH1101 000 Description This optional fuse holder kit can be installed directly in the chassis or in the optional subbase Fuse holder kits are available in 230 208 volt ratings The installer should supply time delay fuses at 15 20 25 or 30 amps in accordance with the Maximum Overcurrent Protection as listed on the unit nameplate Fuses may be purchased from the parts department Note The installation and servicing of this equipment must be performed by qualified experienced technicians only N WARNING Hazardous Voltage Disconnect all electric power including remote disconnects CAUTION Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors may result in equipment damage Important Note All wiring must comply with applicable local and national codes Type and location of fused disconnect switch es must comply with all applicable codes Failure to follow these codes could result in overheating and equipment failure Receiving Upon receipt of the product inspect the shipping carton for signs of visible
23. Desk Control R 0 202 FD1 DR2 DR MS2 1 2 pe 1 Molex Housing Spec 396 06 GL i a 7 19 THERMOSTAT REMOTE WALL THERMOSTAT When the wires are connected the unit will be controlled by a remote wall Wiring Schematic for thermostat Straight Cool Unit The thermostat connections supply the 24 Volt AC When you install the 9 digital electronic thermostat you must set it to 24 Volt AC See the installation Instruction in this manual for the Remote Wall Thermostat M Ww 24 Volt N 7 N 24 Volt L GH D Compressor a wa Heater G Reversing Valve CONNECTIONS High Fan Li R8 Low Fan CONNECTIONS Ww w m NW M GL GH O W Y R C Molex Housing Spec 396 07V Copyright 2007 LG Electronics Inc All right reserved 9 Only for training and service purposes LGE Internal Use Only REMOTE LOCAL CONTROL When remote local switch 1 is on it allow the unit to operate by the control of Remote Wall Thermostat The unit control by knobs are not available ENERGY SAVER The energy saver switch 2 is on This switch is set at continuous fan to provide continuous fan operation in cool or heat modes When the switch is off the continuous fan allows continuous circulation of room air and make the more balanced temperature of the room When the switch is on the fan is on or off with the compressor or with th
24. NTROLLED F Figure 53 1 Grasp the cabinet front as shown in Figure 53 2 Pull the bottom of the cabinet front away from the chassis until the retaining clips disengage as in Figure 54 3 Lift the cabinet front off the chassis 4 Lifting the front edge of the escutcheon slide the tabs at the top of the escutcheon out of the retaining holes and remove the escutcheon See Figure 55 Figure 54 40 LGE Internal Use Only Replace the escutcheon with the one from this kit by inserting the tabs at the top of the escutcheon into the retaining holes and laying the escutcheon flat on the control panel Replace the front by reversing steps 1 through 4 N Store the control knobs and escutcheon just removed from the unit for possible reinstallation if the wall thermostat is no longer desired Figure 55 Escutcheon Subbase Part No AYSB1101 230 208V 20A AYSB2101 230 208V 30A Description The subbase may be installed on the wall sleeve before or after installing the wall sleeve The subbase is prewired Electrical connections can be made on the left side after the access cover is removed grounding screw is provided Receiving Upon receipt of the product inspect the shipping carton for signs of visible damage Report any damage or shortage to the carrier and note it on the delivery receipt The unit must be stored in its original shipping carton in a d
25. achment to the wall sleeve Receiving Compare kit identification number with sales order to ensure that the correct kit has been received Inspect the leveling legs for shipping damage File damage claims with the delivering carrier immediately Installation The installation and servicing of this equipment should be performed by qualified experienced technicians AL Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit Checklist The following is an abbreviated guide to leveling leg installation Refer to appropriate areas for more detailed information 34 LGE Internal Use Only Leveling Leg Assembly Installation on Wall Sleeve To install the leveling leg assembly complete the following Drill four 1 8 inch diameter holes in the wall sleeve two on 1 Drill two 1 8 inch holes in each side of the wall sleeve as each side using the leveling legs as a template Caulk shown in Figure 43 using the leveling leg assembly as a around screws to prevent water leaks template Locations near the front of the sleeve provide 2 Attach the legs to the wall sleeve using the screws more supp
26. an indoor drainage system immediately after the wall sleeve is installed it must be plugged with a cork to prevent indoor water damage in case it rains An indoor tube or hose furnished by others must be installed on the drain fitting and interconnected to the drain system inside of the building Install the two blank off plates C and gaskets A on the outdoor portion of the wall sleeve as shown in Figure 40 These components may be installed after the sleeve is secured in the wall opening just prior to the installation of the condenser grille and chassis Figure 41 AE LEE IC MD 500 Dia f Mtg E VL amp 156 Dia Mtg Holes 2 Dim Notto Inside Edge of Front Sleeve Flange Y Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Leveling Legs Part No AYLL101 Description Leveling legs are designed to provide extra front support and leveling of the wall sleeve Two leg assemblies are required per unit and are provided in each kit Four screws are also provided with each kit for attachment to the wall sleeve See Figure 42 The leveling legs must be installed before the chassis is installed but after the wall sleeve is in place Holes must be drilled in each side of the wall sleeve below the duct package holes for att
27. and discard the red lead from the wire assembly 8 Remove the retaining ring from the threaded portion of the straight conduit clamp Insert the three wires into the metal box through one of the two openings in the box Replace the hole cover grommet into the unused hole to prevent objects from entering the box 9 Replace the retaining ring back on the conduit clamp inside the metal box and tighten the ring securely 10 Insert the three wires extending from the metal box into the incoming power opening on the unit so that approximately 20 inches 508 mm of the wires protrude through the opening 11 Attach the metal box to the chassis with the two screws provided See Figure 45 12 Insert the wire tie into the 1 4 inch diameter hole located just above the incoming power opening Tie all wires together securely with the wire tie See Figure 46 36 LGE Internal Use Only 208 230 Volt Units Remove and discard the white lead from the wire assembly Connect black lead to the line 2 terminal the control board Connect the red lead to the common C terminal on the capacitor 4 Connect the ground wire to the partition panel where the ground wire on the power cord was located Use the supplied green ground screw Connect the red lead in the wire assembly the junction box to the red lead of the field power source Connect the black lead in the wire assembly at j
28. ar sleeve opening 4 Install the stamped aluminum grille by aligning the guide pins located in the lower right and left hand corners of the grille with the corresponding holes in the rear of the wall Sleeve Secure the grille by threading each of the screws into the plastic grommets Remove the wire handle not shown in the picture from the center of the grille prior to installing the chassis into the Sleeve Note Be sure to keep a firm grip on wire handle and grille to prevent it from dropping and or causing possible injury or property damage Architectural Grille 1 Remove the cardboard sleeve stiffener and the rear enclosure of the sleeve as described in Step 1 of the stamped aluminum grille instructions 2 Turn the grille so it can be removed through the rear sleeve opening 3 Install the grille by aligning the four screws supplied to their corresonding holes in the architectural grille 31 LGE Internal Use Only 4 Secure the grille to the sleeve by tightening the four screws to their corresponding holes in the grille 5 Remove the wire handle after the installation is complete Note The stamped aluminum grille includes 6 screws washers nuts and plastic grommets The architectural grille includes 4 Screws Condensate Drain kit Part No AYDR101 Description Condensate water will drain from the chassis into the sleeve during normal heat pump operation This can also occur d
29. as follows High F2 Low F1 High F2 Low F1 E SAVE HEAT L F1LOW F2HIGH FAN HIGH POWER iae To turn the air conditioner ON push this button To turn the air conditioner OFF push the button again This button takes priority over any other button Push this button to cycle through the modes from COOL gt Ru TEMPERATURE SETTING COOL Use this button to automatically control the Fan runs continually for normal cooling operation temperature of the room ENERGY SAVER The temperature can be set within a range of 54 F to 86 by increments of 2 F The fan stops when the compressor stops cooling The setting appears in the display Approximately every 3 minutes the fan will turn on and the unit will check the room air temperature to determine if cooling is needed FAN Fan operation without heating or cooling HEAT Fan runs continually for normal heating operation TIMER SHUT OFF TIME You will usually use shut off time while you sleep If unit is running use Timer to set number of hours until shut off For your sleeping comfort once Time is set the Temperature setting will raise 2 F after 30 minutes and once again after another 30 minutes Push Timer to cycle through the settings from 1 Hour gt 2 Hours gt gt 12 Hours maximum i 6 Copyright 2007 LG Electronics Inc All right reserve
30. at HIGH or LOW speed for either COOLING or HEATING Two Fan motors The unit has two fan motors to provide quiet operation and maximum efficiency LED Diagnostics All units have this feature indicating the problem when the unit is not operating properly with easy to read diagnostics For example 1 blink every 2 seconds indicates compressor failure m 8 Copyright 2007 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes Indoor Filters The unit uses two indoor filters which slide in and cut easily The filters may be cleaned by washing and brushing without removing the front grille Rotary Compressor The unit uses a rotary compressor for quiet reliable operation and long life 2 Position Discharge Grille The discharge grille can provide air flows upward at an angle of 40 off vertical or 15 degree off vertical The angle is changed by removing the front grille and 4 screws that fasten the discharge grille to the front grille and rotating the louvers to an alternate position Indoor Room Freeze Protection When the unit senses the room temperature falls to less than 40 F the unit activates the fan motor and either the electric resistance heater or the hydronic heater to prevent pipes or fixtures from freezing This also overrides front desk control of the unit mounted or wall mounted controls Door Switch Occupancy Sensor The unit is capable of accommodating a fiel
31. base Installation Electrical Receptacle Field Connection Wiring 39 LGE Internal Use Only Remote Escutcheon Kit Part No AYRE110 Description This kit provides an attractive replacement escutcheon see Figure 52 The kit allows the removal of control knobs and graphics which are not required when a wall thermostat is used to control the unit Receiving Upon receipt of the product inspect the shipping carton for signs of visible damage Report any damage or shortage to the carrier and note it on the delivery receipt The unit must be stored in its original shipping carton in a dry secure place prior to its installation and use Installation The installation and servicing of the equipment referred to in this booklet should be performed by qualified experienced technicians N WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit Figure 51 Standard Escutcheon e HEAT E SAVE HIGH COOL Low TIMER Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ROM A REMOTE LOCATION FR UNIT IS CO
32. can cause serious cuts When lifting the air conditioner it is HEAVY Use 2 people to lift 1 066 mm 42 For existing sleeve you should measure the wall sleeve dimensions Install the new air conditioner according to these installation instructions to achieve the best performence All wall sleeves used to mount the new air conditioner must be in good structural condition and have a rear grille that securely attaches to the sleeve or the flange of the sleeve to secure the E Dimension of sleeve assembly optional To avoid vibration and noise make sure the unit is installed securely and firmly 42 12 SQ HOLE 2 REQ D we E 234 L 4 1 2 TYP 1 2 ri E F When installing the sleeve make certain there is nothing P Z N within 20 of the back that would interfere with heat radiation p and exhaust air flow HOLEGREQD Wall opening 16 1 4 x42 1 4 Insulation strip must be attached to prevent the re circulation of exhaust air to inward side from the either side of condenser space The insulation strip is provided with the box Refer to the diagram below iy GRILLE INSULATION SLEEVE COOLED EAT TOP VIEW RADIATION INTAKE AIR 1 4 Bubble y of the level ROOM CABINET __ 20 1 Take out the insulation strip from the upper packing u 280 mm Insulation Strip 11 Front 2 At
33. d LGE Internal Use Only Only for training and service purposes 1 3 ADDITIONAL CONTROLS REMOVING THE FRONT GRILLE Additional controls are available after removing the front grille and option cover of control box To remove the front grille pull out the bottom of front grille and then lift up To replace the front grille place the tabs over the top of the unit and push the bottom of front grille until the clips snap into place ADDITIONAL CONTROLS The additional controls are located behind the option cover of control box The standard settings will be in the OFF position The authorized servicer has to check switches and ensure the switches are in the desired position Remote Local Energy Saver REMOTE ON ON ON LOCAL OFF OFF OFF OFF OFF OFF 5 Temperature Limit 1 Temperature Limit 2 Temperature Limit 3 PTAC PTHP UNIT TYPE x TEMPERATURE LIMITING Temperature Limiting can save money by limiting the lowest temperature for cooling and the highest temperature for heating The temperature limiting is controlled by switches 1 3 This temperature limiting is not available with the Remote Wall Thermostat id o Y 6 Temperature Temperature Temperature Cooling Operation Heating Operation Limit 1 Limit 2 Limit 3 Lowest Temp HighestTemp LowestTemp Highest Temp OFF OFF OFF 54 F 12 2
34. d installed door switch and occupancy sensor to operate the energy management feature For additional information refer to the unit operation section Compressor Overload Protection This feature prevents the damage of the compressor by sensing the indoor tube temperature in heating If the indoor temperature is over 130 F the outdoor fan will be switched off and back on when the temperature drops below 120 F Outdoor Air Temperature Switchover This will effectively change the unit from heat pump mode to total electric resistance heat Temperature limits The unit is programmed to provide both heating and cooling temperature limits by dip switches on control panel from 50 F to 90 F Temperature limits help to prevent overheating and overcooling and reduce energy costs Condensate Drain Valve The unit has a condensate drain valve to prevent water from collecting or freezing in the basepan Quick Heater Recovery The unit is designed to operate the electric heater to warm the room to the temperature set point as soon as heat pump cycle is on in heating This feature has an advantage of reducing the time to reach the set point and improving the temperature increase for better comfort Reverse Cycle Defrosting PTHDs only The unit will activate the reverse cycle defrost when the outdoor coil temperature has remained at a cold temperature to form the ice on the coil This ice will reduce airflow though the coil and will also re
35. duce the efficiency of unit The LG PTHP will employ an active reverse cycle defrost function to melt the ice off the outdoor coil for insuring room comfort conditions and savings from extended operation High Temperature Heat Pump Operation Protection The compressor will be switched off to prevent damage when the heat pump is operated in high outdoor temperatures Remote Thermostat Control Each unit is built to be operated from any standard 4 or 5 wire remote mounted thermostat if desired The unit has a built in low voltage power source which can accommodate a large variety of thermostat choices manual auto changeover or programmable A remote thermostat can also be added to any installed unit Zone Sensor Occupants enjoy ultimate comfort with consistent climate control Attach an optional inexpensive remote Zone Sensor to exactly match the functions of the PTAC without disabling any features Copyright 2007 LG Electronics Inc All right reserved 4 Only for training and service purposes LGE Internal Use Only 1 2 CONTROL LOCATIONS OPERATION TEMPERATURE OPERATION WARMER COOLER ELECTRIC HEATING MODEL TEMPERATURE CONTROL Set the Thermostat control to the desired temperature mark 5 the mid point is a good starting position If the room temperature is not satisfactory after a reasonable time adjust the control to a cooler or warmer setting as appropriate VENTILATION The ventilation lever is locat
36. e drain fitting in the opening of gasket A and hole of plate B Secure this assembly to the rear of the sleeve with two sheet metal screws into holes G provided in sleeve See Figures 37 and 38 Locate the other gasket A on the back of blank off plate C and secure the assembly to the left rear of wall sleeve with sheet metal screws provided See Figure 39 for finished left hand side installation If the unit chassis is to be installed right away install the condenser grille to wall sleeve with hardware provided See condenser grille installation instructions e If the unit chassis will not be installed right away replace the rear enclosure panel in the wall sleeve This will help protect the inside of the building from weather damage If a subbase is used be sure the right hand subbase cover is removed before the chassis is installed in the sleeve Slide the chassis into the wall sleeve until the chassis flanges Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes contact the front edge of sleeve Secure the chassis to the wall sleeve on each side with screws provided Re install the cabinet front See the following pages for installation instructions of indoor drain kit Figure 37 Figure 38 F zc 4 A PLATE EN G DRAIN FITTING Figure 39 BLANK OFF zai SHEET METAL SCREWS Figure 4
37. e heater FRONT DESK CONTROL When the pair wire is connected to the connector LOand LI the unit can be turned ON or OFF with a switch located at the Front Desk Control panel When the front desk switch is ON the fan operate according to the condition of setting without working compressor and heater When the front desk switch is OFF the unit can operate according to the setting of controls Wire AWG Maximum Length 22 600ft 180m 20 900ft 270m 118 1500ft 450m 116 2000ft 610m LO LI GL GH O W Y R C Front Desk Switch REMOTE WALL THERMOSTAT When the wires are connected the unit will be controlled by a remote wall thermostat The thermostat connections supply the 24 Volt AC When you install the digital electronic thermostat you must set it to the 24 Volt AC See the installation Instruction in this manual for the Remote Wall Thermostat 24 Volt N 24 Volt L Compressor Heater Reversing Valve High Fan Low Fan LO LI GL GH O W Y R C Molex Housing Spec 396 09V Copyright 2007 LG Electronics Inc All right reserved 10 Only for training and service purposes Note The following figures show wiring schematics for heat pump and straight cool units with electric heat respectively Wiring Schematic for Remote Heat Pump 2 o s m GL CONTROL BOARD CONNECTIONS THERMOSTAT
38. eater towards left for a while and then lift up vertically to disassemble it completely from Air guide Figure 8 p Copyright 2007 LG Electronics Inc All right reserved 13 Only for training and service purposes LGE Internal Use Only 2 2 2 CROSS FLOW 1 Remove the front grille Refer to section 2 1 1 2 Remove the control box assembly Refer to section 2 1 2 3 Remove the Air Guide Assembly from the unit Refer to section 2 2 1 4 Loosen the screw on the cross flow fan See Figure 9 Figure 9 5 Remove the 4 screws which fasten the indoor motor and the earth wire See Figure 10 6 Remove the supports on both sides 7 Pull the cross flow fan out from the air guide 8 Re install the components by referring to the removal procedure Figure 10 2 2 3 AXIAL FAN 1 Remove the brace 2 Remove the 4 screws which fasten the condenser with the shroud and the basepan See Figure 11 3 Remove the condenser sideways carefully Figure 11 4 Remove the clamp which secures the fan with pliers See Figure 12 5 Remove the axial fan 6 Re install the components by referring to the removal procedure Figure 12 Copyright 2007 LG Electronics Inc All right reserved 14 Only for training and service purposes p m lt 7 A LGE Internal Use
39. ed to the lower left side of the unit The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions When fresh air is necessary in the room set the ventilation lever to the OPEN position The damper is opened and outdoor air is drawn into the room This will reduce the cooling or heating efficiency When the air conditioner has performed a cooling or heating operation and is turned off or set to the fan position wait at least 3 minutes before resetting to the cooling operation A slight heat odor may come from the unit when first switching to HEAT after the cooling season is over This odor caused by fine dust particles on the heater will disappear quickly This is harmless Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes g COOLER COOLING ONLY MODEL OPERATION MODE SELECTOR OFF Turns air conditioner off LOW FAN Low speed fan operation without cooling HIGH FAN High speed fan operation without cooling LOW COOL Cooling with the low speed fan operation HIGH COOL Cooling with the high speed fan operation LOW HEAT Heating with the low speed fan operation HIGH HEAT Heating with the high speed fan operation LGE Internal Use Only ELECTRONIC CONTROLS The controls will look like one of the following FAN SPEED Every time you push this button it cycles through the settings
40. es are in the desired position REMOTE ON ON ON ON ON OFF LOCAL OFF OFF OFF OFF 3 Remote Local Energy Saver Temperature Limit 1 Temperature Limit 2 Temperature Limit 3 TEMPERATURE LIMITING Temperature Limiting can save money by limiting the lowest temperature for cooling and the highest temperature for heating The temperature limiting is controlled by dip switch 1 3 This temperature limiting is not available with the Remote Wall Thermostat Temperature Temperature Temperature Cooling Operation Heating Operation Limit 1 Limit 2 Limit 3 Lowest Temp Highest Temp Lowest Temp Highest Temp OFF OFF OFF 54 F 12 2 C 86 F 30 0 C 54 F 12 2 C 86 F 30 0 C ON OFF OFF 56 F 13 3 86 F 30 0 C 54 F 12 2 C 84 F 28 9 C OFF ON OFF 58 F 14 4 C 86 F 30 0 C 54 F 12 2 C 82 F 27 8 C ON ON OFF 60 F 15 5 C 86 F 30 0 C 54 F 12 2 C 80 F 26 7 C OFF OFF ON 62 F 16 6 C 86 F 30 0 C 54 F 12 2 C 78 F 25 5 C ON OFF ON 64 F 17 7 C 86 F 30 0 C 54 F 12 2 C 76 F 24 4 C OFF ON ON 66 F 18 9 C 86 F 30 0 C 54 F 12 2 C 74 F 23 3 C ON ON ON 68 F 20 0 C 86 F 30 0 C 54 F 12 2 C 72 F 22 2 C Copyright 2007 LG Electronics Inc All right reserved 8 Only for training and service purposes LGE Internal Use Onl
41. he same fuse holder Wire nut the other end to black subbase wire leading to receptacle Figure 51 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure 49 Fuse Holder Diagram Control Panel Installation FUSEHOLDERS EX i El elo Terminal Blocks Behind the Control Panel an Q Control Knobs 0 EISA ransiorme SW 7 O fone Ext2 Ext Status Light Fuse Control Board 5 Connect the stripped RD 9 wire to the center quick connect tab of the second fuse holder Wire nut the other end to the red field connection wire TB3 Figure 51 6 Connect the other stripped RD 9 wire to the quick connect tab on the side of the second fuse holder Wire nut other end to red subbase wire which leads to receptacle Figure 51 7 Insert time delay fuses into the fuse holders Size all fuses by the Maximum Overcurrent Protection shown on the nameplate Also refer to the serial plate on the unit Figure 50 Subbase Left Side Fuse Holder Knockouts Power Switch Leg Knockouts Figure 51 Fuse Holder Diagram Sub
42. http biz lgservice com Window Air Conditioner MODEL LP120HED Y8 CAUTION Before Servicing the unit read the safety precautions in General SVC manual Only for authorized service personnel LP120HED Y8 Cooling Capacity 3 46 3 52 11 800 12 000 Heating Capacity 3 14 3 19 10 700 10 900 Electric Heater capacity kW 3 08 3 49 10 500 11 900 Power Input Cooling Heating 1 090 950 1 110 970 Running Current Cooling Heating 5 4 4 8 5 0 4 4 Starting current Cooling Heating Electric Heater Current 14 9 152 EER 3 17 3 17 Btu h W 10 8 10 8 COP W W 3 3 3 3 Power Supply V Hz 1 208 60 1 230 60 Power Factor 94 8 95 2 95 7 95 8 19 2 20 Air Flow Rate Indoor Max 10 5 370 Outdoor Max 20 706 Moisture Removal 1 5 Sound Level Indoor H M L 49 47 SOUND PRESSURE 1M Outdoor Max 63 Refrigerant amp Charge R22 825 29 1 Compressor Type Rotary Non Tropical Model QK164KBB Motor Type PSC Oil Type SUNISO 465 Oil Charge 280 Name MRA12124 12026 Fan Type In Out Cross Flow Fan Axial Fan Motor Type In Out 4 Poles Motor Output In Out W
43. inal Capacitor Discharge capacitor before testing Test capacitor Replace if not within 10 of manufacturer s rating Replace if shorted open or damaged Will not rotate Fan blade hitting shroud or cross flow fan hitting scroll Realign assembly Units using slinger ring condenser fans must have 1 4 to 5 16 inch clearance to the base If it is hitting the base shim up the bottom of the fan motor with mounting screw s Check fan motor bearings if motor shaft will not rotate replace the motor Fan motor runs intermittently Revolves on overload Check voltage See limits on this page If not within limits call an electrician Test capacitor Check bearings Does the fan blade rotate freely If not replace fan motor Pay attention to any change from high speed to low speed If the speed does not change replace the motor Fan motor noise Grommets Check grommets if worn or missing replace them Fan If cracked out of balance or partially missing replace it Turbo fan If cracked out of balance or partially missing replace it Loose set screw Tighten it Worn bearings If knocking sounds continue when running or loose replace the motor If the motor hums or noise appears to be internal while running replace motor Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 46 LGE Internal Use Only
44. k by bowing the door with both hands and aligning the door hinge pins with their bracket in the front Figure 23 Important Note Installation Personal Risk Hazard Underwriter s Laboratories Inc listed The installation and servicing of the equipment referred to in For institutional use only where supervisory monitoring is this booklet should be performed by qualified experienced available technicians Any other use may increase the risk of personal injury or property damage 1 Remove front from unit by pulling bottom out and then lifting upward Figure 21 Figure 23 New Door Installation Figure 21 Remove Front Hinge Pins Each Side Brackets Each Side Copyright 2007 LG Electronics Inc All right reserved 27 Only for training and service purposes LGE Internal Use Only Condensate Disposal Pump Kit Installation Part No AYSB2101 Description The internal condensate pump serves as a means for disposing of condensate generated during heat pump operation by transferring it to the indoor coil The warm coil surface and the warm room air help in evaporation of the condensate while adding humidity to the room As with any equipment of this type the addition of this kit will decrease the effective heating capacity of the unit This kit is not intended for use in seacoast or corrosive environments NOTE Under extreme high humidity conditions the internal condensate pump may not be able to dispose of all the
45. l from each corner of the inside cutout Studding that interferes with the opening must be removed and a suitable frame constructed to secure the wall case and provide adequate support for case and chassis Preparation of the Wall Case for All Types of Construction As shipped the LG wall sleeve is ready for installation Do not remove the stiffener from inside the wall case or the weather closure panel from the outside face of the wall case until the outdoor grille and chassis are ready to be installed Installation of Wall Case in Wall Opening 1 Position the wall case into the wall The room side edge of the wall case should be at least flush with the finished wall for line cord installations and permanent connection installations when no sub base is used and should project into the room at least 2 3 8 when a sub base is used If the minimum exterior dimensions are not met refer to page 23 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes The outside edge of the wall case should extend at least 1 4 beyond the outside wall This is necessary for proper caulking to prevent sealing thedrain holes in the rear flange of the wall case and to facilitate the installation of an accessory drain if used The wall case should be level from side to side and from level to 1 4 bubble tilt to the outdoors The condensate disposal system in the unit is designed to dissipate the condensate water
46. lacement Check circuit breaker and fuse Gas leakage of feeler bulb of thermostat Check control switch gt Improper thermostat setting gt Loose terminal connection Improper wiring Y Only fan fails to start Y Improper wiring Y Defect of fan motor capacitor Irregular motor resistance Q Irregular motor insulation Q Y Replacement of fan motor Irregular motor resistance Q Irregular motor insulation 0 Y Replacement of compressor Motor damaged Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 45 Regular but fails to start Replacement of compressor locking of rotor metal LGE Internal Use Only COMPLAINT CAUSE REMEDY Fan motor will not run No power Check voltage at outlet Correct if none Power supply cord Check voltage to rotary switch If none check power supply cord Replace cord if circuit is open Rotary switch Check switch continuity Refer to wiring diagram for terminal identification Replace switch if defective Wire disconnected or connection loose Connect wire Refer to wiring diagram for terminal identification Repair or replace loose term
47. mance of the unit The following information is intended to minimize installation problems and assure you of trouble free installation Refer to page 20 for required wall opening dimensions Minimum recommended interior and exterior case projection for standard wall thicknesses are shown in the drawings in this manual The case may be installed flush with the finished indoor wall Mounting an outdoor grille or louver section to the building face may cause a space between the outdoor coil and the louver section Air splitters aligned with the ends of the outdoor coil must be installed between the outdoor coil inlet and outlet air streams Gaps between the outdoor coil and the louver section may allow condenser air recirculation and affect the operation of the unit See page 40 for requirements for custom louver sections The wall case should be level from side to side and from level to 1 4 bubble tilt to the outdoors The condensate disposal system in the unit is designed to dissipate the condensate water generated during cooling operation in accordance with ARI standards and actually uses this water for maximum unit efficiency A level unit will also insure proper performance of the Internal Condensate Removal ICR system optional on heat pump units For new construction early planning with the architect is necessary Unit location electrical connection locations and wall openings of the proper dimensions are essential to avoid
48. ment referred to in this booklet should be performed by qualified experienced technicians A WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Note A baffle kit must not be used with a stamped aluminum grille on any PTAC installation Stamped Aluminum Grille 1 Prepare the wall sleeve for installation of the grille by removing the cardboard stiffener and rear enclosure panel from the sleeve These items may be removed from inside of the building Note The sleeve stiffener must be taken out before the rear sleeve enclosure panel can be removed from the sleeve 2 Prepare the stamped aluminum grille for installation on the sleeve by inserting the six 6 plastic grommets into the square holes located near the outer edges of all four sides of the grille With the grille positioned so the flanges of all four sides are in the up position insert the grommets so the square end protrudes through the grille in the opposite direction from the flanges Turn the grille so it can be removed through the re
49. ning and service purposes LGE Internal Use Only 1 1 FEATURES AND BENEFITS The PTAC has many features some of which are different than those found on conventional PTAC units The servicer must be familiar with these features in order to properly service the unit THE SLEEVE AND THE REAR GRILLE Available as an option VERTICAL AIR DEFLECTOR SLEEVE ASSEMBLY REAR GRILLE Horizontal Louver Including Aluminum Rear Grille Aluminum Rear Grille ESS TESS ESSSSSSSO SSSSS SSS Sos lt SSSESSESS 1095995944 mcm AIR FILTER SSSSSSSSSS SSSSSSSSSS m 55 SSOSSOSS 005606990 gt 55555 555 lt 5 5 5 55 SSS 5559 2994 SS INLET GRILLE Air Intake EXPANDED METAL GRILLE Superior for a performance Infinite Impulse Response The IIR function senses the temperature several times per second and makes micro adjustments several times per Compressor Restart Delay This feature extends the overall life of compressor by preventing the short cycling of the air conditioner When the compressor restarts LG PTAC is designed to give a minimum of three minutes to have a time of equalizing the refrigerant pressures for optimizing cycling Fan Only Setting High Low The fan can run at HIGH or LOW speed without COOLING or HEATING to provide air circulation and ventilation Indoor Fan Speed Selections High Low The fan can run
50. of the spraying tube Copyright 2007 LG Electronics Inc All right reserved 29 Only for training and service purposes LGE Internal Use Only Figure 31 Tube Pump assembly Rubber 14 Connect the condensate pump to the ICR Spraying elbows 3 e Tube 2 15 Assembly the unit back following the reverse order of disassembly NOTE All tube should be inserted into rubber elbows by at least 1 2 inch relay of the terminal of the board as shown in fig fig 32 amp 34 whichever is applicable Make sure to fasten the pump wire through the wire clip on the back side of the control barrier as shown in fig 33 Figure 32 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 30 LGE Internal Use Only Architecture Grille Aluminum Single Pack Part No AYAGALAO 1 Stamped Aluminum Grille Description Outdoor grilles are attached to the wall sleeve and exposed to the exterior wall The grilles are an industry standard size of 42 x 16 Receiving Upon receipt of the product inspect the shipping carton for signs of visible damage Report any damage or shortage to the carrier and note it on the delivery receipt The unit must be stored in its original shipping carton in a dry secure place prior to its installation and use Installation The installation and servicing of the equip
51. ort provided 2 Adjust the leveling legs to the approximate height needed 3 Adjust the leveling legs to level the wall sleeve from side to and install them on either side of the wall sleeve using the side and provide a slight pitch to the outside one quarter screws provided Bottom of wall sleeve can be anywhere bubble in sight glass from three to five inches above the screw base Caulk around screws to prevent water leaks Figure 44 Leveling Leg Installation on Wall Sleeve 3 Level the sleeve horizontally from side to side Provide a slight slope one quarter bubble in the sight glass toward the outside Check the level again after the unit has been installed Adjust the legs as needed Figure 43 Leveling Leg Assembly 1 8 Diameter holes four required per unit field drilled Leveler Bracket 4 2 Speed Grip Nut Adjuster Screw NOTES 1 Two leveling legs are supplied in each kit 2 One kit is required per unit 3 Fout mounting screws are provided in each kit Copyright 2007 LG Electronics Inc All right reserved 35 Only for training and service purposes LGE Internal Use Only Hard Wire Kit Part No AYAGALAO1 Description Hard Wire Junction Box Direct Wire Sub Base The hard wire junction box kit is used to hard wire the unit when it is not desirable to use the standard unit subbase or the unit power cord The junction box provides a protected enclosure for electrical connec
52. parated and tied up properly The wires should also be pressed a little downwards to prevent touching it to the display pcb Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 16 Figure 17 Figure 18 LGE Internal Use Only 2 4 REFRIGERATION CYCLE i CAUTION Discharge the refrigerant system using a refrigerant recovery system If there is no valve to attach the recovery system install one such as a WATCO A 1 before venting the refrigerant Leave the valve in place after servicing the system 2 4 1 CONDENSER 1 Remove the brace and the shroud Refer to section 2 2 2 2 Remove the 4 screws which fasten the shroud Refer to section 2 2 2 3 Push forward the shroud and remove the 2 screws which fasten the condenser with the basepan 4 After discharging the refrigerant completely unbraze the interconnecting tube at the condenser connections 5 Remove the condenser 6 Re install the components by referring to notes See Figure 19 2 4 2 EVAPORATOR 1 Remove the front grille Refer to section 2 1 1 2 Discharge the refrigerant completely 3 Remove the control box assembly Refer to section 2 1 2 4 Remove the 4 screws which fasten the evaporator at the left side and the right side 5 Move the evaporator sideward carefully and then unbraze the interconnecting tube at the evaporator connectors 6 Remove the evaporator
53. pe capacitor See Figure 16 Remove 1 screw and the clamp which fastens the can type capacitor Disconnect all the leads of capacitor terminals Re install the components by referring to the removal procedure above Figure 13 Figure 15 Figure 16 Copyright 2007 LG Electronics Inc All right reserved 15 Only for training and service purposes LGE Internal Use Only 2 3 5 POWER CORD 1 Remove the control box Refer to section 2 1 2 2 Disconnect the grounding screw from the control box 3 Disconnect 2 receptacles Remove a screw which fastens the clip cord Separate the power cord from the control box See Figure 17 6 Re install the component by referring to the removal procedure above Use only one ground marked hole for ground connection 7 If the supply cord of this appliance is damaged it must be replaced by an exact replacement part The special cord means the cord which has the same specification marked on the supply cord fitted to the unit OR 2 3 6 P C B 1 Remove the escutcheon 2 Remove the two knobs 3 Remove the 2 screws which fasten P C B cover 4 Disconnect all the leads which connected to the 5 Remove the two screws which fasten the P C B board 6 Re install the components by referring to the removal procedure above AXES After servicing control box sure that AC and DC wires are se
54. rposes A WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit CAUTION Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors may result in equipment damage Important Note All wiring must comply with applicable local and national codes Types and location of disconnect switches must comply with all applicable codes 1 Remove the cover plate from the junction box 2 Mount the junction box to the wall or floor within 28 inches 711 mm of the lower right corner of the wall sleeve 3 If a disconnect switch is to be used make electrical connections to it and mount the switch in the junction box Refer to the Power Switch Installation Instructions 4 Remove control panel assembly by removing the two screws holding control panel in place Rotate the panel forward 5 Disconnect the power cord leads from all electrical connections including the ground wire 6 Remove the power cord clamp and the power cord from the unit 7 For 208 230 volt units remove and discard the white lead from the wire assembly For 265 volt units remove
55. ry secure place prior to its installation and use Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Installation The installation and servicing of the equipment referred to in this booklet should be performed by qualified experienced technicians N WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit CAUTION Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors may result in equipment damage Note When using a subbase the wall sleeve must be installed a minimum of 3 1 4 inches 83 mm above a finished floor and a minimum of 2 3 4 inches 70 mm from a finished wall Remove parts B and C Figure 57 next page from the subbase and join together using two metal screws provided This assembly now becomes the right front cover Part F of the subbase Figure 56 next page Position subbase under the front of the wall sleeve wo nm Align the back edge of the flange on cover A Figure 57 next page to front of the wall sleeve flange Figure 58 next page 4
56. se Only COMPLAINT CAUSE REMEDY Compressor cycles on overload Voltage Check the voltage See the limits on the preced ing page If not within limits call an electrician Overload Check overload if externally mounted Replace if open If the compressor temperature is high remove the overload cool and retest Fan motor If not running determine the cause Replace if required Condenser air flow restriction Remove the cabinet inspect the interior surface of the condenser if restricted clean carefully with a vacuum cleaner do not damage fins or brush Clean the interior base before reassembling Condenser fins If condenser fins are closed over a large area damaged on the coil surface head pressures will increase causing the compressor to cycle Straighten the fins or replace the coil Capacitor Test capacitor Wiring Check the terminals If loose repair or replace Refrigerating system Check the system for restriction Insufficient cooling or heating Air filter If restricted clean of replace Exhaust damper door Close if open Unit undersized Determine if the unit is properly sized for the area to be cooled Excessive noise Cross flow fan Check the set screw or clamp If loose or missing correct If the blower or fan is hitting air guide rearrange the air handling parts Copper tubing Carefully rearrange t
57. t serves only as a link between the unit and field supplied condensate drain system Installing the kit without connecting it to a drainage system Will result in inadequate condensate removal possible leakage and corrosion Algaecide Some algaecide products may cause damage to the unit basepan and therefore should not be used Contact your sales representative when considering the use of a commercial algaecide See Figure 35 for components of the drain kit 32 LGE Internal Use Only Figure 36 Outdoor Drain Kit Installation DRAIN FITTING PLATE B PLATE C 1 2 DRAIN FING GASKETS A MTG SCREWS Outdoor Drain Kit Installation Before installing the wall sleeve louvered condenser grille it must be determined if the optional outdoor wall sleeve drain kit is to be installed The drain kit will allow the condensate from the outdoor and indoor coils to be routed to a suitable area The drain kit can be installed so the condensate can be drained from the right or left hand side of the wall sleeve See Figure 36 See local codes for proper condensate disposal To install the outdoor drain components proceed as follows Remove the rear enclosure panel and the sleeve stiffener These items may be removed from the inside of the building The drain fitting can be installed on the left or right hand side of the sleeve Illustration will be for a right hand installation Insert th
58. tach the insulation strip onto the rear upper side of the wall sleeve 5 on Sleeve 3 To improve unit energy efficiency itis recommendedthe Jf __ change of outside grille for an unit protection and an addition of a plastic rear grille This is optional 4 Insulation strip prevents the exhaust air from re entering from either side of condenser space which may decrease the cooling efficiency of condenser pear i 20 Copyright 2007 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes 3 2 WALL SLEEVE INSTALLATION 3 2 1 Wall Case Installation Data General Generally units are installed 3 to 5 above the floor flush to finished floor installation is possible as near to the center of the room as possible underneath a window or a glass panel is typical Normal installation of the wall case allows installation flexibility from flush with the finished interior wall to a minimum of 1 4 of the wall case extending beyond the finished exterior of the building Special consideration must be given to installations where the wall case does not extend a minimum of 1 4 beyond the finished exterior wall Regardless of the installation there are several things to consider when selecting a location for installing the unit For instance drapery location could interfere with air discharge and placement of furniture may have an impact on the perfor
59. tes pinch off connection until 600 microns of vacuum are obtained Close valves A and B and observe the vacuum gauge for a few minutes A rise in pressure would indicate a possible leak or moisture remaining in the system With valves A and B closed stop the vacuum pump 4 Remove the hose from the vacuum pump and place it on the charging cylinder See Figure 16 B Open valve C Discharge the line at the manifold connection 5 The system is now for final charging Copyright 2007 LG Electronics Inc All right reserved 18 Only for training and service purposes LGE Internal Use Only Equipment needed Vacuum pump charging cylinder manifold gauge brazing equipment pinch off tool capable of making a vapor proof seal leak detector tubing cutter hand tools to remove components service valve CONDENSER COMPOUND HIGH PRESSURE SIDE MANIFOLD GAUGE B CAPILLARY TUBE SEE INSETS BELOW EVAPORATOR LOW PRESSURE SIDE COMPRESSOR EXTERNAL VACUUM PUMP CHARGING CYLINDER Figure 16 A Pulling Vacuum Figure 16 B Charging Copyright 2007 LG Electronics Inc All right reserved 19 Only for training and service purposes LGE Internal Use Only 3 1 HOW TO INSTALL THE UNIT Dimension of air conditioner CUm E There are sharp edges that
60. tions as required by some electrical codes The hard wire junction box is intended to be mounted on the floor or the adjacent wall The junction box is furnished with approximately 2 1 2 feet of 1 2 inch flexible steel conduit and a metal box for securing the conduit to the unit cabinet at the incoming power opening An optional 230 208V or 265V power switch assembly is available for use with the hard wire junction box or subbase The switch provides a POWER ON OFF function at the unit as required by some electrical codes A replacement junction box cover plate is provided with each Switch kit For additional information refer to the Power Switch Installation Instructions Receiving Upon receipt of the product inspect the shipping carton for signs of visible damage Report any damage or shortage to the carrier and note it on the delivery receipt Unit must be stored in its original shipping carton in a dry secure place prior to its installation and use Installation The installation and servicing of this equipment should performed by qualified experienced technicians Junction Box Kit Installation and Wiring Procedure Electrical connections at the unit must be made after the unit chassis is installed in the wall sleeve The installer must determine and supply the mounting components for attaching the junction box to the wall or door Copyright 2007 LG Electronics Inc All right reserved Only for training and service pu
61. tive Cooling Y Check of cold air circulation for smooth flow Check of outdoor coil Check heat load increase heat exchanger amp the fan operation Dirty indoor coil Heat exchanger Unexpected residue Check gas leakage Y Overloaded Circuit Malfunction of fan Repair gas leak Clogged of air filter Check of inside gas Obstruction at air outlet Replacement of unit if the pressure unit is beyond repair Adjusting of refrigerant charge Correct above trouble Malfunction of compressor Replacement of Check clogging in refrigeration circuit compressor i Repair clogging in refrigeration circuit Copyright 2007 LG Electronics Inc Only for training and service purposes Satisfactory operation with temperature difference of inlet 8 outlet air 44 6 50 7 10 C 44 LGE Internal Use Only Fails to Start Y Check power source Check control switch setting Only compressor fails to start Drop of power voltage Defect of compressor capacitor Check capacitor Rep
62. ubing not to contact compressor shroud and barrier Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 48 LGE Internal Use Only TOI The dia CAPILLARY TUBE Y EXCHANGE EVAPORATOR CONDENSER A Y REVERSING VALVE ACCUMULATOR Cooling COMPRESSOR a Heatig LOC Description PCB Connector Thermistor for indoor Air temperature CN IDAT Th2 Thermistor for evaporating temperature CN IDPT Th3 Thermistor for outdoor Air temperature CN ODT Th4 Thermistor for condenser Air temperature Copyright 2007 LG Electronics Inc All right reserved 49 Only for training and service purposes LGE Internal Use Only 7 schematic diagram _ a POWER INPUT NEUTRAL LIVE WH BK In part A there are 3 types GN YL HEATER Ese BIMETAL ROO OR OR Had Dye ry Q HEATER FUSE BIMETAL Y orf amp 4 270 0 0 seH BL FOR E HEATER MODEL GANA INDOOR COIL THERMISTOR BK CANO EMH INDOOR AIR XL THERMISTOR ON CN CN CN THERMO S AUXCS IDPT IDAT IN DISP 2 x BK yy BK OUTDOOR BLH FAN g MOTOR HOLSINYSHL v8000V1289 ON d WSSV V28206V0489 ON d 58 58
63. unction box to the black lead of the field power source 7 Connect the ground wire of the field power source to the ground wire of the wire assembly at the junction box Install the junction box cover plate Reinstall the control panel assembly 265 Volt Units Remove and discard the red lead from the wire assembly Connect the black lead to the center terminal of the fuse holder Connect the white lead to the common C terminal on the capacitor 4 Connect the ground wire to the partition panel where the ground wire on the power cord was located Use the supplied green ground screw Connect the white lead of the wire assembly the junction box to the white lead of the field power source Connect the black lead of the wire assembly the junction box to the black lead of the field power source 7 Connect the ground wire of the field power supply to the bare ground wire of the wire assembly at the junction box Install the junction box cover plate Reinstall the control panel assembly Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure 45 Mounting Hard Wire Junction Box Kit Wall Sleeve Ground Wie with Eyelet Terminal Power Leads with Push on X Connectors Metal Box with Straight Clamp Terere eren Conduit Figure 46 Metal
64. uring times of high humidity when in cooling operation Install either the outdoor or indoor drain kit components to control the condensate water where normal drainage from the wall sleeve is not possible or undesirable See Figure 35 for all components of the drain kit A WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Receiving Upon receipt of the product inspect the shipping carton for signs of visible damage Report any damage or shortage to the carrier and note it on the delivery receipt The product must be stored in its original shipping carton in a dry secure place prior to its installation and use Installation The installation and servicing of the equipment referred to in this booklet should be performed by qualified experienced technicians Figure 35 Components of Drain Kits DRAIN FITTING BLANK OFF BLANK OFF PLATE B PLATE PLATE C GASKETS A 1 2 DRAIN FITTING MTG SCREWS MTG SCREWS BLANK OFF GASKET E FOR PLATE D PLATE D Drain Installation Note The optional drain ki
65. ve A and allow the proper charge to leaving the valves open enter the system Valve B is still closed 4 Solder the pinch off tubes with service valves 4 If more charge is required the high side will not 5 Evacuate as follows take it Close valve A 1 Connect the vacuum pump as illustrated 5 With the unit running open valve B and add the Figure 16 A balance of the charge 2 Start the vacuum pump slowly open manifold a Do not add the liquid refrigerant to the low valves A and B with two full turns side counterclockwise and leave the valves closed b Watch the low side gauge allow pressure to The vacuum pump is now pulling through valves rise to 30 165 A and B up to valve C by means of the manifold c Turn off valve B and allow pressure to drop and entire system d Repeat steps B and C until the balance of the charge is in the system XX 6 When satisfied the unit is operating correctly If high vacuum equipment is used just crack use the pinch off tool with the unit still running valves A and B for a few minutes then open and clamp on to the pinch off tube Using a tube slowly with the two full turns counterclockwise cutter cut the pinch off tube about 2 inches from This will keep oil from foaming and being the pinch off tool Use sil fos solder and solder drawn into the vacuum pump pinch off tube closed Turn off the unit allow it to set for a while and then test the leakage of the 3 Operate the vacuum pump for 20 to 30 minu
66. ving four screws and lifting up as shown in fig 24 gt Remove and set aside the air discharge screen by unscrewing the 5 screws on the top e Remove the one screws holding the control board cover as shown fig 25 Remove the cover by lifting it up so its free from its hinges and put aside 6 Unplug the electric heater connecter located inside the wire junction box 28 LGE Internal Use Only 7 Remove the screw that attaches the electric heater wire to 11 Install tube 1 and tube 2 ref fig 31 on the pump the side of the indoor fan housing assembly using the rubber elbows as shown in fig 28 8 Remove the 3 screws which fasten the top cover assembly 12 Position pump assembly to the basepan as shown in fig 9 Position water spraying plastic tube into the electric heater 29 and fasten the pump bracket to the basepan using the cover Make sure that the three pairs total of six of plastic three screws provided tongues snap into the corresponding metal slots of the heater frame as shown in fig 27 Then install one of the three rubber elbows ref fig 31 at the inlet of the spraying tube and through the rubber grommet n 13 Insert tube 2 of the pump assembly through the plastic grommet of the sheet metal partition as shown in fig 30 Then connect the end of tube 2 to the plastic elbow 10 Place the top cover assembly back into the unit coming out of the inlet
67. y REMOTE LOCAL CONTROL When remote local switch 1 is on it allow the unit to operate by the Remote Wall Thermostat The unit control by knobs are not available ENERGY SAVER The energy saver switch 2 is on This switch is set at cycle fan to provide continuous fan operation in cool or heat modes When the switch is off the continuous fan allows continuous circulation of room air and make the more balanced temperature of the room When the switch is on the fan is on or off with the compressor or with the heater FRONT DESK CONTROL When the pair wire is connected to the connector FD2 and FD1 the unit can be turned ON or OFF with switch located at the Front Desk Control panel When the front desk switch is ON the fan operates according to the setting without working compressor and heater When the front desk switch is OFF the unit can operate according to the setting of controls Wire AWG Maximum Length 22 600 ft 180 m Note The following figures show wiring 20 900 ft 270 m schematics for heat pump and straight 18 1500 ft 450 m cool units with electric heat respectively 16 2000 ft 610 m Motion Sensor Wiring Schematic for Motion Sensor Remote Heat Pump Door Switch Door Switch C C Front Desk Control Front

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