technical data & service manual split system air conditioner
Contents
1. LJ 480 995 206 i Remote control unit LO e N Center of tubing hole 2 places Drain hose 18 Narrow tube 6 35 1 4 KR188E Wide tube 12 7 1 2 Unit mm Indoor Unit FCR518CL 900 190 680 86 U Center of tubing hole 075 4 places _ n Wide tube 12 7 1 2 FCR518CL J H N Narrow tube 6 35 1 4 i Drain hose 026 2 JU 61 18 5 41 Dimensions mm Outdoor Unit AER518SC 538 lt gt Air intake Ea2. Probe Insulation tester Fig 1 Terminal plate 777 Clip 4 Copper Insulation tube or KL tester metallic part SS Fig 2 Clip C Copper tube or metallic part Insulation tester Fig 3 From fan motor compressor and other parts Metallic part Clip Insulation tester Fig 4 11 2 Checking Continuity of Fuse on PCB Ass y Fuse Remove the PCB Ass y from the electrical component box Then pull out the fuse from the PCB Ass y Fig 5 Check for continuity using a multimeter as shown in PCB Assy Fig 6 Fi 11 3 Checking Motor Capacitor Remove the lead wires from the capacitor terminals and then place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the 2 multimeter to the maximum value The capacitor is good if the pointer bounces to a great extent and then gradually returns to its original position The range of deflection and deflection time differ according to the capacity of the capacitor p Compressor motor capacitor Fan motor capacitor 45 Fuse Multimeter 9 5 Fig 6 Fig 7 12 DISASSEMBLY PROCEDURE FOR INDOOR UNIT N IMPORTANT Please Read Before Starting Safety precautions for servicing the CEILING MOUNTED indoor unit Before attempting to replace heavy and bulky parts such as the e
3. 9 SSCS A XSZS Z S C 0SXoPSC ER o RR e E 8 COP os EE Sl Compressor locked rotor 43 Controls Temperature control O Noise Power Level Refrigerant tube diameter Optional Hanging wall bracket Unit dimensions Height mm Width mm Se Depih GA d Package dimensions Height mm 6 Width mm S Dem mm Weight Net kg Shipping kg i cM Indoor Unit Outdoor Unit eeng 900 830 190 305 EE EE 1011 994 296 413 2 MED MM E 30 0 57 0 S EE Remarks Rating conditions are Cooling Indoor air temperature 27 C D B 19 C W B Outdoor air temperature 35 C D B 24 C W B DATA SUBJECT TO CHANGE WITHOUT NOTICE 2 2 Major Component Specifications 2 2 1 Indoor Unit Indoor Unit AWR518CL Part No POW K188E rM t MR M EE PR TOTNM Microprocessor S Control circuit fuse 250 V 3 15 Remote Control Unit RCS 8PS3E Type Cross flow 5 Coil resistance Ambient temp 20 C Q WHT BRN 130 4 i WHT PNK 169 8 G s L af E S LL mE 5 gt Q 4 i m Each terminals 1 2 1 3 1 4 1 5 400 7 Coil P Aluminum plate fin Copper t
4. SPECIFICATIONS Unit Specification Major Component Specifications GE Other Component Specifications 3 DIMENSIONAL DATA REFRIGERANT FLOW DIAGRAM 5 Pi PERFORMANCE DATA GE Charts EE Throw Distance Chart 16 5 3 Cooling Capacit 16 N 6 ELECTRICAL DATA EL Electrical Characteristic 6 2 Electric Wiring Diagrams E Installation Site Selection 21 2 Remote Control Unit Installation Position 24 7 3 Recommended Wire Length and Diameter 24 Outdoor Fan Speed Control BH FUNCTION S Charging additional refrigerant Retro fitting existing system Room Temperature Control Ho TR UBLESHOOTING Check before and after troubleshooting Air Conditioner Does not operate RIS A1S18 9 9 2 9 3 E 19 7 9 8 Some Parts of Air Conditioner does not operate Air Conditioner Operates but abnormalities are observed If a sensor is defective 11 CHECKING ELECTRICAL COMPONENTS Measurements of insulation resistance Checking continuity of on ass Checking motor capacitor DISASSEMBLY PROCEDURE FOR INDOOR UNIT Removing air intake grille Removing side panels Access and removal of electrical components box Removing flap motor Removing evaporator Removing fan and fan motor 1 OPERATING RANGE Temperature Indoor Air Intake Temp Outdoor Air Intake Temp 32 23 W B 43 D B
5. Never attempt to charge additional refrigerant when refrigerant has been leaking CAUTION from the unit Follow the procedure described below to locate points of leaks and carry out repairs then recharge the refrigerant 1 Detecting Leaks Use the detector for R407C to locate refrigerant leak points 2 Recovering refrigerant 1 Detecting leaks Never release the gas to the atmosphere recover residual refrigerant using the refrigerant recovery unit for R407C instead 1 composition will have been altered 2 Recovering refrigerant 3 Welding leaking points OK Do not reuse the recovered refrigerant because its OK Confirm again that no residual refrigerant exists in the unit before starting welding Y Weld securely using flux and wax for R407C 3 Welding leaking points Prevent oxide film from forming inside the tubes utilizing substitution with nitrogen N2 in the OK refrigerant circuit of the unit Leave ends of tubes open during welding ERRECHEN OK Use nitrogen gas for the pressurized gas and never use a refrigerant other than R407C Also do not use oxygen or any flammable gas 5 Evacuation Use solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation OK of air due to a power interruption the valve will prevent the pump oil from flowing back The equipment may be damaged if moisture rema
6. To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts TRANSFORMER TR 7 INSTALLATION INSTRUCTIONS 7 1 Installation Site Selection 22 2 Indoor Unit i 15 cm 15 cm min 15 om To prevent abnormal heat min dr RS INDOOR UNIT WARNING generation and the possibility YY of fire don t place obstacles gs ie P enclosures and grills in front Front View of or surrounding the air Fig 1 conditioner in a way that may block air flow AVOID 9 direct sunlight nearby heat sources that may affect performance of the unit INDOOR Tubing length L IT areas where leakage of flammable gas may be expected places where large amounts of oil mist exist Elevation OUTDOOR difference H UNIT DO select an appropriate position from which every corner of the room can be uniformly air conditioned Fig 2a High on a wall is best select a location that will hold the weight of the unit select a location where tubing and drain pipe have the CAUTION shortest run to the outside Indoor Unit For stable operation of the air conditioner do not install wall mounted type indoor units less than 1 5m from floor level allow room for operation and maintenance as well as unrestricted air flow around the unit Fig 1 Wall V Minimum height
7. u Minimum 19 D B 14 W B 19 C D B 2 SPECIFICATIONS 2 1 Unit Specifications Indoor Unit AWR518CL Outdoor Unit AER518SC Power Source 230 V Single phase 50Hz Voltage rating V 230 d Cooling bal E Moisture removal High Liters h 2 2 E Available voltage range V 198 to 264 E Running amperes A 9 1 Power input W 1950 TT ET DTD EE SE EE an a a a an a a aaa eege EE Compressor locked rotor 43 Controls Temperature control O Noise Power Level Refrigerant tube diameter Optional Hanging wall bracket Unit dimensions Height mm Width mm Se Depih GA d Package dimensions Height mm 6 Width mm S Dem mm Weight Net kg Shipping kg i cM Indoor Unit Outdoor Unit a qus ss 995 830 206 I 305 uS EE aana a 1 070 994 363 413 15 0 57 0 S ST aaa nia sn Remarks Rating conditions are Cooling Indoor air temperature 27 C D B 19 C W B Outdoor air temperature 35 C D B 24 C W B DATA SUBJECT TO CHANGE WITHOUT NOTICE Indoor Unit FCR518CL Outdoor Unit AER518SC Power Source 230V Single phase 50Hz Voltage rating V 230 Bis Cooling o c bal E I Moisture removal High Liters h 2 3 E Available voltage range V 198 to 264 E Running amperes A 9 1 Power input W 1950
8. Timer is turned ON Check to see YES FM gt motor winding OK Measure resistance of flap motor winding FLP Measure coil resistance of either power relay or magnetic contactor PR or MG OK Replace the fuse if is displayed on remote control 38 gt Cancel the timer mode 10 2 3 Only outdoor unit does not run A Check setting temperature Is room temperature too low Try to lower setting temperature by temperature setting button button Outdoor unit still does not run Try to run using another remote control unit OK Remote control unit is defective B Check power relay in outdoor unit Power sounds click when 220 to 240V is applied PR Check indoor PCB Ass y 39 10 3 Some part of air conditioner does not operate 10 3 1 Only indoor fan does not run Fan cannot Check fan rotation be turned Turn fan gently once or twice by hand Measure resistance of indoor fan motor winding Check fan motor capacitor C1 10 3 2 Only outdoor fan does not run Fan cannot Check fan rotation be turned Turn fan gently once or twice by hand Measure resistance of outdoor fan motor winding Check fan motor capacitor C2 Check fan casing foreign matter on inside Remove foreign matte
9. h 307 N 4 S Air discharge 830 ac 212 holes gi o e E Wide tube service valve 212 7 1 2 Narrow tube service valve 06 35 1 4 Unit mm 4 REFRIGERANT FLOW DIAGRAM Indoor Unit AWR518CL Outdoor Unit AER518SC FCR518CL Indoor Unit Outdoor Unit Wide tube i service Compressor 1 Wide tube valve Accumulator m i Hk oO OD 12 7 mm 27 1 5 5 s 2 8 8 G 8 Narrow tube service Narrow tube valve Capillary tube Strainer th H DK Ww DJ OD 96 35 mm 1 4 Insulation of Refrigerant Tubing IMPORTANT Because capillary tubing is used in the outdoor unit both the wide and narrow tubes of this air conditioner become cold To Insulation prevent heat loss and wet floors due to dripping of IN Thickness Thickness condensation both tubes must be well insulated with a Min 8 mm Min 8 mm proper insulation material The thickness of the insulation should be a min 8 mm Narrow tube Wide tube After a tube has been insulated never try to bend it into a narrow curve because it can cause the tube to break or crack 12 5 PERFORMANCE DATA 5 1 Performance charts AWR518CL AER518SC Indoor Unit Outdoor Unit H Cooling Characteristics door inlet air B temp
10. 10 IMPORTANT The foamed polystyrene drain pan is fragile DO NOT apply excessive force when removing it 8 The evaporator can be removed by sliding it out from the drain pan in the direction of the arrow Fig 11 Front panel Fig 9 Rubber cap Thermistor Drain pan Front fan casing Drain hose Plastic clamp Fig 10 Mounting plate Mounting Evaporator Indoor coil Drain pan Fig 11 49 12 6 Removing Fan and Fan Motor 1 Unlatch the 2 hooks each side to take off the front fan casing Fig 12 Hook Front fan casing Fig 12 2 Remove the 2 screws attaching the rear fan casing and then pull the fan casing out 7 gt QA V Na KE L Rear fan casing Fig 13 3 Insert a hex wrench in the fan boss and turn it Centrifugal fan counterclockwise to loosen the centrifugal fan The fan can be removed by sliding it to the left Fig 14 Hex wrench 8mm or 7 64 Fig 14 4 Remove the 4 bolts to remove the fan motor from the frame Fig 15 Bolts M6 Fan motor Frame an melo Fig 15 50 go c limz s p Via Varese 90 21013 Gallarate Italy Tel 39 0331 755111 Fax 39 0331 776240 www argoclima it Printed in italy
11. Y Min 10 Valve side 4 Min 25 cm i Min 4 M Min au S 5 Air discharge 18 A 2 lt o 77777 7 7 7777777 be 8 View Fig 4 Ground Side View Fig 4c AER518SC mod Anchor bolts Min 10 cm Air intake Concrete or equal 22 7 2 Remote Control Unit Installation Position The remote control unit can be operated from either a non fixed position or a wall mounted position To ensure that the air conditioner operates correctly do not install the remote control unit in the following places In direct sunlight Behind a curtain or other place where it is covered More than 8 m away from the air conditioner In the path of the air conditioner s airstream Where it may become extremely hot or cold Where it may be subject to electrical or magnetic interference Mounting on a Wall a Removable mounting 1 Momentarily hold the remote control unit at the desired mounting position 2 Confirm that the air conditioner responds correctly when you press keys on the remote control from that position 3 After confirming correct operation use a screwdriver to screw the supplied special mounting screw into the wall Fig 6a 4 Hang the remote control unit from the mounting screw b Non removable mounting 1 Momentarily hold the remote control unit at the desired mounting position 2 Confirm that the air conditioner responds correctly when
12. minimum necessary amount for the cylinder is 0 76 10 x 0 20 2 76Kg Single valve with siphon tube For the remaining refrigerant refer to the instructions Charge with the cylinder in the Fig 5 of the refrigerant manufacturer normal position R Configurations and characteristics of cylinders If using a charging cylinder transfer the specified amount of liquid refrigerant from the refrigerant cylinder to the charging cylinder Prepare an evacuated charging cylinder beforehand To prevent the composition Charqi of R407C from changing 7 never bleed the refrigerant gas into the atmosphere while transferring the refrigerant Fig 6 Do not use the refrigerant if the amount in the charging cylinder is less than 20 ging cy Refrigerant cylinder Fig 6 33 9 7 Charging additional refrigerant 9 7 1 When tubes are extended Observe the proper amount of refrigerant as stated in this service manual the installation manual that came with the indoor unit Charge additional refrigerant in liquid state Never charge additional refrigerant if refrigerant is leaking from the unit Follow N CAUTION instructions given in 9 6 In case refrigerant is leaking and completely carry out repairs Only then should you recharge the refrigerant 9 8 Retro fitting existing systems 9 8 1 Use of existing units Never use new refrigerant R407C for existing units which use R22 Thi
13. 11 CHECKING ELECTRICAL COMPONENTS 11 1 Measurement of Insulation Resistance The insulation is in good condition if the resistance exceeds 2MQ 11 1 1 Power Supply Wires Clamp the ground wire of the power supply wires with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires Fig 1 Then measure the resistance between the ground wire and the other power wire Fig 1 11 1 2 Indoor Unit Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw on the terminal plate Fig 2 Note that the ground line terminal should be skipped for the check 11 1 3 Outdoor Unit Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate Fig 2 11 1 4 Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the desired electric part from terminal plate capacitor etc Similarly disconnect the connector Then measure the insulation resistance Figs 3 and 4 Refer to Electric Wiring Diagram If the probe cannot enter the poles because the hole is too narrow then use a probe with a thinner pin 44 Ground wire
14. C fan speed i Low l I i High l 1 l 1 Operating curreni A 25 30 35 40 45 50 Outdoor inlet air D B temp C door inlet air 1 18 11 1 08 10 0 98 9 Outdoor B temp C fan speed Low saing High 0 89 8 0 79 7 0 69 6 0 59 5 0 49 4 0 39 3 Fs 0 29 2 Low pressure at wide tube service MPa kgf cm2G 25 30 35 40 45 50 Outdoor inlet air temp Points of Rating condition Black dots in above charts indicate the following rating conditions Cooling Indoor air temperature 27 19 W B Outdoor air temperature 35 D B 24 C W B 5 2 Air Throw Distance Chart Indoor Unit AWR518CL Room air temp 27 Fan speed High Horizontal distance m 1 2 3 4 5 6 7 8 9 Axis air velocity m s Vertical distance m angle 0 Axis air velocity 0 Flap angle 30 Axis air velocity 30 AIR FLOW CHART Indoor Unit FCR518CL Room air temp Fan speed H Floor mounted 27 High e Axis air verocity Axis air verocity M s Vertical distance m Ceiling mounted o Horizontal distance m e Flap angle d 6 7 7 L 5 Horizontal distance m 6 7 e Axis air verocity
15. is more easily affected by dust or moisture compared with R22 thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation No addition of compressor oil for RA07C No additional charge of compressor oil is permitted No use of refrigerant other than R407C Never use a refrigerant other than R407C 9 If refrigerant R407C is exposed to fire Through welding etc toxic gas may be released when 407 refrigerant is exposed to fire Therefore be sure to provide ample ventilation during installation work Caution in case of R407C leak Check for possible leak points with the special leak detector R407C If a leak occurs inside the room immediately provide thorough ventilation 28 9 3 Tools specifically for R407C For servicing use the following tools for R407C Tool Distinction Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Tools specifically for R407C Refrigerant recovery unit e Vacuum pump with anti reverse flow 1 Solenoid valve installed type which prevents oil from flowing back into the unit when the power is off is recommended e Vacuum pump 2 can be used if the following adapter is attached e Vacuum pump adapter reverse flow prevention adapter 443 Solenoid valve installed adapter attached to a conventional vacuum pump Electronic scale for charging refrigerant Flare tool Bender Tools which
16. pinched pipes of both discharge and suction tubes of the new compressor replace it quickly OK 3 Checking for sealing 3 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R407C Also do not use OK oxygen or any flammable gas 4 Evacuation Y Use a solenoid valve installed vacuum pump so 4 Evacuation that even if power is cut off in the middle of evacuation OK of air due to a power interruption the valve will prevent the pump oil from flowing back The equipment may be damaged if moisture remains in the tubing thus carry out the evacuation thoroughly 5 Recharging When using a vacuum pump with exhaust air volume more than 25L min and ultimate vacuum pressure rate of 0 05Torr Standard time of evacuation Length of tubing Less than 10 m More than 10 m More than 10 min More than 15 min 30 5 Recharging lt Valve Be sure to charge the specified amount of refrigerant in liquid state using the service port of wide tube service valve The proper amount is listed on the unit s nameplate When the entire amount cannot be charged all at once charge gradually while operating the unit in Cooling Operation Never charge a large amount CAUTION of liquid refrigerant at once to the unit This may cause damage to the compressor Single valve Charge the liquid refrigerant lt When charged with a refrigerant cylind
17. H Disconnect the power or turn off circuit breaker before you start checking or servicing 1 Remove the front screw with a screwdriver Fig 4 2 Slide the lid out and up Fig 4 3 Disconnect the wiring as necessary 4 Remove the 4 screws then pull out the electrical component box Fig 5 Hook Hook Tapping screws 4 x 10 mm Fig 3 Fig 4 Fig 5 47 12 4 Removing Flap Motor 1 Remove the 3 screws used to mount the top panel Fig 6 2 While unlatching the 2 tabs inside the back of the top panel lift the top panel diagonally in the direction of the arrow Fig 6 8 Remove the 2 screws to pull off the flap motor The arm and cam come off together with the motor Fig 7 motor Fig 6 12 5 Removing Evaporator Fig 7 Indoor Heat Exchange Coil 1 Remove the 7 screws used to mount the blades Fig 8 Blades 2 Lift the blades in the direction of the arrow Fig 8 AAA Y Fig 8 48 3 Remove the 6 screws of the front panel and pull it toward you Fig 9 4 Remove the 2 screws used to mount the evaporator Fig 10 5 Remove the rubber cap to pull the thermistor out of the evaporator Fig 10 6 Cut the plastic clamp securing the drain hose to the front fan casing Fig 10 7 The evaporator is built into the drain pan Pull out the drain pan together with the evaporator in the direction of the arrow Fig
18. MPERATURE 35 C D B INDOOR UNIT ENTERING AIR TEMP 27 C D B 19 C W B 6 ELECTRICAL DATA 6 1 Electrical Characteristics Indoor Unit AWR518CL Outdoor Unit AER518SC Indoor Unit Outdoor Unit Complete Unit 230V Single phase SOHz Rating Conditions RunnngAmps A os o9 8 LS Power Input kW 0 070 0 093 Full Load Conditions Running Amps A 10 5 Power Input kW 0 070 0 093 Rating Conditions Indoor Air Temperature 27 C D B 19C W B Outdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 C D B 23 W B Outdoor Air Temperature 46 C D B Indoor Unit FCR518CL Outdoor Unit AER518SC Compete Un 230V Single phase 50Hz Rating Conditions Running Amps A 033 050 827 9 1 Power Inu 755 59 NAN kW Full Load Conditions Running Amps A kW 035 LE 0 070 0 093 2 30 Rating Conditions Indoor Air Temperature 27 C D B 19C W B Outdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 D B 23 W B Outdoor Air Temperature 46 C D B Power Input 6 2 Electric Wiring Diagrams HESE RERSIECE To avoid electrical shock hazard be Outdoor Unit AER518SC sure to disconnect power before WARNING checking servicing and or cleaning any electrical parts 2 8 19 Indoor Unit FCR518CL TERMINAL PLATE FROM OUTDOOR APOO UNIT FLAP MOTOR GRN YEL d FAN MOTOR COIL TH1 THERMISTOR 20 ROOM TH2
19. TECHNICAL DATA amp SERVICE MANUAL Indoor Unit Outdoor Unit I AWR518CL AER518SC FCR518CL SPLIT SYSTEM AIR CONDITIONER AER518SC 6 Ceiling Mounted 0 8180 218 0 07 2001 Important Please Read Before Starting This air conditioning system meets strict safety and operating standards As the installer or service person it is an important part of your job to install or service the system so it operates safely and efficiently For safe installation and trouble free operation you must Carefully read this instruction booklet before beginning Follow each installation or repair step exactly as shown Observe all local state and national electrical codes Pay close attention to all warning and caution notices given in this manual This symbol refers to a hazard or N unsafe practice which can result in severe personal injury or death This symbol refers to a hazard or practice which result in personal injury or product or property damage If Necessary Get Help These instructions are all you need for most installation sites and maintenance conditions If you require help for a special problem contact our sales service outlet or your certified dealer for additional instructions In Case of Improper Installation The manufacturer shall in no way be responsible for improper installation or maintenance service including failure to
20. can be commonly Torque wrench used for R22 and R407C Cutter Reamer Welding machine nitrogen gas cylinder The above tools specifically for R407C must not be used for R22 Doing so will N CAUTION cause malfunction of the unit For the above vacuum pump 4 1 2 and vacuum pump adapter those for R22 type units can be used for R407C type However they must be used exclusively for 407 and never alternately with R22 9 4 For tubing installation procedures When the tubes are connected always apply HAB oil on the flare portions to improve the sealing of tubing The following is the HAB oil generally used Esso ZERICE 532 NOTE For details on tubing installation procedures refer to the installation manuals attached to the indoor unit and outdoor unit 29 9 5 In case of compressor malfunction Should the compressor malfunction be sure to replace compressor as quickly as CAUTION possible Use only the tools indicated exclusively for R407C See 9 3 Tools specifically for R407C 9 5 1 Procedure for replacing compressor 1 Recovering refrigerant Any remaining refrigerant inside the unit should not be released to the atmosphere but recovered using the refrigerant recovery unit for R407C OK 1 Recovering refrigerant Do not reuse the recovered refrigerant since will contain impurities 2 Replacing compressor 2 Replacing compressor Soon after removing
21. cuit breaker is set to ON it is tripped soon Resetting is not possible There is a possibility of ground fault Check insulation resistance If resistance value is 2 or less insulation is defective NO 5185 Indoor Inter unit Outdoor Power unit wiring unit supply wiring 1X 1 Lis Circuit Power 211 x 2 N xX breaker supply x e 4 4 Ground WARNING Set circuit breaker to OFF p Remove both power supply wires and inter unit wires from terminal NO Insulation of plate in outdoor unit gt outdoor unit Measure insulation resistance is defective of outdoor unit lt Measure insulation resistance of electrical parts in outdoor unit Remove inter unit wires from NO Insulation of terminal plate in indoor unit Measure insulation resistance of indoor unit indoor unit is defective lt Measure insulation resistance of electrical parts in indoor unit B Circuit breaker trips in several minutes after turning the air conditioner on There is a possibility of short circuit Check capacity of circuit breaker Capacity of circuit breaker is suitable Measure resistance of outdoor fan motor winding Measure resistance of compressor motor winding Replace with suitable one larger capacity 36 10 2 2 Neither indoor no
22. e Earth s ozone layer Its refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant R22 9 1 2 Components mixing proportions HFC32 23 HFC125 25 HFC 134a 52 9 1 3 Characteristics Less toxic more chemically stable refrigerant Composition of refrigerant R407C changes whether it is in gaseous phase or liquid phase Thus when there is a refrigerant leak the basic performance of the air conditioner may be degraded because of a change composition of the remaining refrigerant Therefore do not add new refrigerant Instead recover the remaining refrigerant with the refrigerant recovery unit Then after evacuation totally recharge the specified amount of refrigerant with the new refrigerant at its normal mixed composition state liquid phase When refrigerant R407C is used the composition will differ depending on whether it is in gaseous or liquid phase and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in gaseous state Thus always charge the refrigerant while it is in the liquid phase 6 Ether type oil is used for the compressor oil for R407C type units which is N CAUTION different from the mineral oil used for R22 Thus more attention to moisture prevention and faster replacement work compared with conventional models are required 9 2 Checklist before servicing Tubing precautions Refrigerant R407C
23. e Flap angle Axis air verocity M s Vertical distance m lt 1 gt 2301 ei 45 5 3 Cooling Capacity Indoor Unit AWR518CL Outdoor Unit AER518SC RATING CAPACITY 4 8 kW AIR FLOW RATE 760 m h CONDENSER WB DB 25 30 35 40 4 CM 1 61 1 71 1 84 2 02 2 20 21 23 15 25 27 29 31 cw re 176 ts 20 26 CM 1 64 1 76 1 89 2 08 2 26 21 SHC 2 42 23 2 82 17 25 3 22 27 3 62 29 4 03 31 4 24 TC 5 22 5 04 4 80 4 51 4 15 _____ 722 182 155 25 2s 21 23 19 25 27 29 31 SHC 4 12 CM 1 76 1 87 2 01 2 20 2 39 21 CM 1 80 1 91 2 06 2 25 2 45 23 2 21 2 12 2 00 1 88 1 75 2 59 2 40 2 98 2 81 3 41 3 20 TC TOTAL COOLING CAPACITY SHC SENSIBLE HEAT CAPACITY CM COMPRESSOR INPUT RATING CONDITIONS OUTDOOR AMBIENT TEMPERATURE 35 C D B INDOOR UNIT ENTERING AIR TEMP 27 C D B 19 C W B Indoor Unit FCR518CL Outdoor Unit AER518SC RATING CAPACITY 4 8 kW AIR FLOW RATE 760 m h CONDENSER 4 55 4 41 4 21 3 94 3 64 1 61 1 71 1 84 2 02 2 20 TC 4 93 4 74 4 51 4 24 3 90 CM 1 64 1 76 1 89 2 08 2 26 SHC TC 5 53 5 34 5 09 4 78 4 40 E 1 76 gt 2 01 TO 5 91 5 66 5 34 5 00 4 65 CM 1 80 1 91 2 06 2 25 2 45 Bpe 5 22 5 04 7 80 4 51 4 15 1 72 1 82 1 95 2 14 2 32 19 l i TOTAL COOLING SHC SENSIBLE HEAT CAPACITY CM COMPRESSOR INPUT RATING CONDITIONS OUTDOOR AMBIENT TE
24. efrigerant pressure the control circuit has a built in automatic time delay to allow the internal pressure to equalize As a protective measure the control circuit switches the compressor OFF after 5 minutes or more of compressor operation Thermo When the room temperature is above T 1 C T C is set temperature Compressor Thermo OFF When the room temperature is equal to or below set temperature T C Compressor OFF 25 8 2 Dry Operation Dehumidification Dry operation uses the ability of the cooling cycle to remove moisture from the air but by running at low level to dehumidify without greatly reducing the room temperature The air conditioner repeats the cycle of turning ON and OFF automatically as shown in the chart below according to the room temperature Room temp Cooling operation T 2 C Dry A zone Compressor Continuous operation FMI indoor fan L low speed LL very low speed intermittent ventilation Set temp T C only while the compressor is ON 1 Dry zone Compressor Intermittent operation ON for 3 minutes and OFF for 9 minutes FMI indoor fan L low speed LL very low speed intermittent ventilation only while the compressor is ON Room temp 15 C Monitor zone Both the indoor and outdoor units stop Intermittent ventilation occurs by switching the indoor fan speed between L lt gt LL Dry operation does not occur when the ro
25. er use the Wilh the cylinder iry the Fig 1 d up side down position electronic scale for charging refrigerant In this case if the volume of refrigerant in the cylinder becomes less than 20 of the fully charged amount the composition of the refrigerant starts to change Thus do not use K Valve the refrigerant if the amount in the refrigerant cylinder is less than 20 Also charge the minimum necessary amount to the cylinder before using it for charging the air conditioning unit Example In case of charging refrigerant to a unit requiring 0 76Kg using a capacity of 10Kg cylinder the minimum necessary amount for the cylinder is 0 76 10x 0 20 2 76Kg Single valve with siphon tube For the remaining refrigerant refer to the Charge with the cylinder in the instructions of the refrigerant manufacturer normal position Configurations and characteristics of cylinders Fig 2 If using a charging cylinder transfer the specified amount of liquid refrigerant from the refrigerant cylinder to the charging cylinder Prepare an evacuated charging cylinder beforehand To prevent the composition of R407C from changing Charging never bleed the refrigerant cylinder gas into the atmosphere while transferring the refrigerant Fig 3 Do not use the refrigerant if the amount in the charging cylinder is less than 20 NY Open Refrigerant cylinder Fig 3 31 9 6 In case refrigerant is leaking
26. evention B Short When thermistor is short the air conditioner will be in the following conditions as the controller tries to detect extremely high indoor coil temperature In Cooling mode Function of freeze prevention will not work even when the frost builds up on indoor heat exchanger coil 10 5 2 Room temp thermistor TH2 is defective A Open When thermistor opens the air conditioner will be in the following conditions as the controller tries to detect extremely low room temperature In Cooling mode The air conditioner soon stops and will not start again Thermo OFF Neither outdoor fan nor compressor runs B Short When thermistor is short the air conditioner will be in the following conditions as a the controller tries to detect extremely high room temperature Sensor In Cooling mode air conditioner continues to operate Thermo ON Both the outdoor fan and compressor do not stop As a result the Lead room becomes too cold Thermistor Structure Open A lead wire is broken or disconnected or the circuit inside the temperature sensor is open wires NOTE Definition of Open or Short Circuit of Sensor Thermistor Short The protective cover of a lead wire has been damaged and the exposed wire is touching another metal part or both lead wires have become exposed and are touching each other Alternatively the circuit inside the temperature sensor is closed 43
27. follow the instructions in this document Special Precautions When Wiring ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH ONLY A QUALIFIED EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked Highly dangerous electrical voltages are used in this system Carefully refer to the wiring diagram and these instructions when wiring Improper connections and inadequate grounding can cause accidental injury or death Ground the unit following local electrical codes Connect all wiring tightly Loose wiring may cause overheating at connection points and a possible fire hazard When Transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the units weight It may be necessary to construct a strong wood or metal frame to provide added support In a Room Properly insulate any tubing run inside a room to prevent sweating that can cause dripping and water damage to walls and floors In Moist or Uneven Locations Use a raised concrete pad or concrete blocks to provide a solid level foundation for the outdoor unit This
28. from floor level 1 5m install the unit within the maximum elevation difference H above or below the outdoor unit and within a total tubing length L from the outdoor unit as qetailed Table 1 and Fig 2a 7777171717111117 Floor level Fig 2b Table 1 Max Allowable Tubing Length at Shipment m Limit of Tubing Length L m Limit of Elevation Difference H m Required Amount of Additional Refrigerant g m AER518SC 7 5 20 21 25 If total tubing length becomes 7 5 to 20 m max charge additional refrigerant R407c by 25 g m No additional charge of compressor oil is necessary Outdoor Unit AVOID heat sources exhaust fans etc Fig 3 damp humid or uneven locations Hot s 1 fan DO choose a place as cool as possible Cinta um choose a place that is well ventilated allow enough room around the unit for air intake exhaust and possible maintenance Figs 4a to 4b provide a solid base concrete block 10 x 40 cm beams or equal a minimum of 10 cm above ground level to reduce humidity and protect the unit against possible water damage and decreased service life Fig 5a use lug bolts or equal to bolt down unit reducing vibration and noise Required space around the unit 5185 mod 5185 mod Obstacle above Air intake in
29. hod etc poon AERS18SC OUTDOOR UNIT UNIT Each wire must be firmly connected B No wire should be allowed to touch refrigerant tubing the compressor any moving part To avoid the risk of electric K shock each air conditioner unit must be grounded Power supply 220 240 V 50Hz Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram The indoor unit draws its power from the outdoor unit 24 8 FUNCTION 8 1 Room Temperature Control Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit The room temperature and other information is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit Signal from remote control unit 3 minutes 3 minutes 3 minutes minutes minutes 3 minutes minutes Thermo Thermo Thermo Thermo Thermo Thermo Thermo OFF ON OFF ON ON ON _ a C O settemp T C uum eee EES Se ae s More than 5 minutes 5 minutes 3 minutes Room temp ___ 4 Outdoor fan Indoor fan Set speed The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least 3 minutes To protect the compressor from stalling out when trying to start against the high side r
30. ins 6 Recharging in the tubing thus carry out the evacuation thoroughly When using a vacuum pump with exhaust air volume more than 25L min and ultimate vacuum pressure rate of 0 05Torr Standard time of evacuation Length of tubing Less than 10 m More than 10 m More than 10 min More than 15 min 32 6 Recharging Valve Be sure to charge the specified amount of refrigerant in liquid state using the service port of wide tube service valve The proper amount is listed on the unit s nameplate When the entire amount cannot be charged all at once charge gradually while operating the unit in Cooling Operation Never charge a large amount CAUTION of liquid refrigerant at once to the unit This may cause damage to the compressor Single valve Charge the liquid refrigerant When charged with refrigerant cylinder use the with the cylinder in the Fig 4 electronic scale for charging refrigerant In this case if basado pasihan the volume of refrigerant in the cylinder becomes less than 20 of the fully charged amount the composition of the refrigerant starts to change Thus do not use the refrigerant if the amount in the refrigerant cylinder is less than 20 E Valve Also charge the minimum necessary amount to the cylinder before using it for charging the air conditioning unit Example In case of charging refrigerant to a unit requiring 0 76Kg using a capacity of 10Kg cylinder the
31. ish Acrylic baked on enamel finish DATA SUBJECT TO CHANGE WITHOUT NOTICE 2 3 Other Component Specifications Indoor Unit AWR518CL Transformer TR Rating Primary Secondary Capacity Q at 219 Coil resistance Thermal cut off temp Thermistor Coil sensor Resistance Indoor Unit FCR518CL Thermistor Room sensor TH2 Resistance kQ Thermistor Coil sensor TH1 Resistance kQ Transformer TR Rating Primary Secondary Capacity Coil resistance Q at 21 C Thermal cut off temp ATR J105 AC 230V 50 60Hz 19V 0 526A 10VA Primary WHT WHT Secondary BRN 150 DTN TKS131B 25 5 0 3 35 56 10 10 0 4 30 15 7 944 35 20 6 3 4 40 25 5 0 4 50 PBC 41E S14 40 1 5 24 4 5 15 3 5 9 9 5 ATR H85 11V 0 727A 8VA Primary WHT WHT Secondary BRN 145 C 2A 250V 205 10 2 0 10 3 3 4 2 7 4 1 8 4 6 5 5 4 4 5 3 0 5 2 1 5 214 10 1 58 10 Outdoor Unit AER518SC Power Relay Coil rating Coil resistance Contact rating Thermostat Fan Speed Control 23S Switching temp Contact rating G7L 2A TUB AC 200 240V 50 60Hz 21 15 AC 220V 25A MQT5S 27YZJ SE s 2550 30 A low HIGH 27 0 C 8 AC 220V 3A DIMENSIONAL DATA 3 AWR518CL Indoor Unit
32. om temperature is under 15 C which is the monitor zone When the compressor stops the indoor fan stops as well 8 3 Freeze Prevention This function prevents freezing of the indoor heat exchange coil When the compressor has been running for 10 minutes or more and the temperature of the indoor heat exchange coil falls below 1 C the control circuit stops the compressor for at least 6 minutes The compressor does not start again until the temperature rises above 8 C or 6 minutes has elapsed Thermo OFF Room temp Thermo ON T 1 Set temp T C M h dee heat exch 6 USE WAN EK 1 C A 1 More than More than 10 minutes 10 minutes Pe DE Compressor ON Indoor fan Set speed Set speed 26 8 4 Outdoor Fan Speed Control To optimize performance of the air conditioner the outdoor fan speed is switched automatically according to the outdoor temperature I the outdoor air temperature falls below C the fan speed switches to LOW I the outdoor air temperature rises above B C the fan speed switches to HIGH Outdoor air temperature C Outdoor fan speed Models AER518SC 27 9 REFRIGERANT R407C SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9 1 Characteristics of new refrigerant R407C 9 1 1 What is new refrigerant R407C R407C is a new refrigerant that contains three types of non azeotropy type mixed refrigerant which does not adversely affect th
33. prevents water damage and abnormal vibration an Area with High Winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a suitable air baffle In a Snowy Area for Heat Pump type Systems Install the outdoor unit on a raised platform that is higher than drifting snow Provide snow vents When Connecting Refrigerant Tubing Use the flare method for connecting tubing Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before starting the test run When Servicing Turn the power off at the main power box mains before opening the unit to check or repair electrical parts and wiring Keep your fingers and clothing away from any moving parts Clean up the site after you finish remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced Others Ventilate enclosed areas when installing testing the refrigeration system Escaped refrigerant gas on contact with fire or heat can produce dangerously toxic gas Confirm upon completing installation that no refrigerant gas is leaking If escaped gas comes in contact with a stove gas water heater electric room heater or other heat source it can produce dangerously toxic gas Table of Contents Page OPERATING RANGE
34. r or repair Fan motor burnout or foreign matter in bearings Repair or replace Check fan casing foreign matter on inside Fan motor burnout or foreign matter in bearings Remove foreign matter or repair Repair or replace 10 3 3 Only compressor does not run Check compressor motor capacitor Either internal protector or overload relay is working Either OLR or 49C YES Measure resistance of compressor motor winding Temperature of compressor is abnormally high YES Refrigerant gas shortage YES Y NO Y Charge refrigerant gas R407c Rotor may be locked up 10 3 4 Only flap motor does not run Measure resistance of flap motor winding FLP 10 3 5 Function of outdoor fan speed control does not work properly Check thermostat in outdoor unit 235 Refer to 8 4 Outdoor Fan Speed Control 41 10 4 Air conditioner operates but abnormalities are observed 10 4 1 Poor cooling Check position of remote control unit YES Cool air from air conditioner reaches position directly Wide and narrow tubes between indoor unit and outdoor unit are Change position of remote control unit insulated YES Temperature difference Measure temperature of suction and is small di
35. r outdoor unit runs A Power is not supplied Circuit breaker is tripped Check power supply gt Reset breaker Power is being supplied to the outdoor unit Power failure Wait for recovery gt or contact power B Check remote control unit Try to run with another remote control unit First remote control unit is defective Check for residue buildup on transmitter of remote control unit Check for residue buildup on remote control receiver on front of indoor company gt Clean transmitter gt Clean receiver unit C Check OPERATION selector switch in the indoor unit OPERATION selector switch is set YES in ON position NO Set OPERATION selector switch to ON D Check transformer in indoor unit Measure resistance of primary and secondary winding TR 37 Indoor PCB Ass y is defective E Check fuse on the indoor Ass y Check fuse on indoor PCB Ass y If fuse has been blown Measure resistance of indoor fan for continuity F Check operation lamp to see if light is ON Light is Measure resistance of primary and secondary winding of transformer TR Indoor PCB switch Ass y is defective F Check TIMER on the remote control unit
36. s will cause the air conditioner to operate improperly and may result in a hazardous condition 9 8 2 Use of existing tubing e If replacing an older unit that used refrigerant R22 with a R407C unit do not use its existing tubing Instead completely new tubing must be used 34 10 TROUBLESHOOTING 10 1 Check before and after troubleshooting Hazardous voltage can cause ELECTRIC SHOCK DEATH Disconnect power or turn off circuit breaker before you start checking or servicing 10 1 1 Check power supply wiring Check that power supply wires are correctly connected to terminals L and N on the terminal plate in the outdoor unit Indoor Outdoor unit unit 0 D Ground ici em e 2 A D Power supply N 220 240 50 2 Inter unit MNT power wiring Ground 10 1 2 Check inter unit wiring Check that inter unit wiring is correctly connected to the indoor unit from the outdoor unit 10 1 3 Check power supply Check that voltage is in specified range 10 of the rating Check that power is being supplied 10 1 4 Check lead wires and connectors in indoor and outdoor units Check that coating of lead wires is not damaged Check that lead wires and connectors are firmly connected Check that wiring is correct 35 10 2 Air conditioner does not operate 10 2 1 Circuit breaker trips or fuse blows A When the cir
37. scharge air of air conditioner Temperature difference between suction and discharge air is large enough approx 10 deg or more Insulate both wide and narrow tubes separately and then tape together Possibility of gas shortage Charge refrigerant gas R 4070 Check for clogging of air filter Air filter is clogged gt Clean filter Set fan speed to either YES Fan speed is set to LOW Review cooling load estimate HIGH or MEDIUM if performance of air conditioner is normal 10 4 2 Excessive cooling Reduce cooling load or replace the air conditioner with larger capacity NO Set temperature is suitable Remote control unit is placed where it can detect room temperature Set temperature to higher value using temperature setting buttons of the remote control unit properly 42 Change position of remote control unit 10 5 sensor is defective 10 5 1 Indoor coil temp thermistor TH1 is defective A Open When thermistor opens the air conditioner will be in the following conditions as the controller tries to detect extremely low indoor coil temperature In Cooling mode Function of freeze prevention continues to work That is the controller turns both compressor and outdoor fan motor periodically ON and OFF for several minutes Refer to 8 3 Freeze Pr
38. ube 5 Rows 2 5 Fin piteh aa s LL ARS I En Face area m2 0 250 DATA SUBJECT TO CHANGE WITHOUT NOTICE Indoor Unit FCR518CL 5 POW K185GS N ea Control circuit fuse 250V 3A Remote Control Unit RCS Centrifugal 16 45 15 5 GRY WHT 215 7 c 87 7 J T VLT YEL 87 7 WHT PNK 273 7 EHE MM Internal thermal fuse Open C 145 5 5 gaeren EE BE et Nominal output W 3 2 5 Coil Heat Exch Coil Rows Fin pitch mm Face area m2 Aluminum plate fin Copper tube DATA SUBJECT TO CHANGE WITHOUT NOTICE Outdoor Unit AER518SC Controller PCB Rotary Hermetic 6 UN T Ka Q 5 Safety devices 0 ee AL HI j Number De MM Fan motor model Number aaa of poles rpm 230 V High Nominal output Coil resistance Ambient temp 20 C Q WHT 77 7 7 S WHT YEL 366 0 7 WHT 211 05 7 o c p devices temp Open A TAGIH 13045 MERE E Automatic reclosing sss Run capacitor vi D VAC 440 Aluminum plate fin Copper tube 59 Rows 2 EE EE EE m an a ga a IN Face area m 0 508 External Fin
39. vaporator and fan motor disconnect the indoor unit from the system and place it on the floor Refer to the steps given below When checking or servicing the air intake grille side panels or electrical component box first check that power is completely disconnected Pay utmost care that your working platform is stable enough Also do not drop any replaced parts and tools on the floor For Floor Installation 12 1 Removing Air Intake Grille 1 Hold both ends and pull forward to open the air intake grille Fig 1 2 Remove the metal clips connecting the unit and the grille First with a screwdriver loosen the marked screw a little at the right side clip DO NOT loosen it too much otherwise the screw and small metal parts will fall off inside then press on the stopper and pull off Fig 2 Center latch 3 Do the same procedure for the left metal clip Fig 1 4 Unlatch the 2 tabs on the lower part of the grille to take it off completely Unit Air intake grille Metal clip Fig 2 46 12 2 Removing Side Panels 1 Remove the 3 screws attaching the left side panel Fig 3 2 Note the position of the hook on the inside of the left side panel To disengage the hook from the slot slide down the panel for removal Fig 3 3 Do the same procedure for the right side panel 12 3 Access and Removal of Electrical Component Box K Hazardous voltage can cause ELECTRIC SHOCK or DEAT
40. you press keys on the remote control from that position 3 After confirming correct operation use a screwdriver to screw the supplied special mounting screw into the wall Fig 6a 4 Remove the remote control cover by sliding it downward 5 Remove the batteries of the remote control unit 6 Use a screwdriver to screw the remote control unit securing screw into the wall through the hole in the battery compartment Fig 6b 7 Replace the batteries 8 Again confirm that the remote control unit operates correctly 23 Removable mounting Special mounting screw Fig 6a Non removable mounting Fig 6b Wall Wall 7 3 Recommended Wire Length and Size Regulations on wiring diameter differ from locality to NOTE locality For field wiring requirements please refer to your local electrical codes Carefully observe these regulations when carrying out the installation Refer to the WIRING SYSTEM DIAGRAM for the meaning of A and B in Table 2 Table 2 lists recommended wire lengths and cross section area for power supply systems Table 2 Cross Sectional Area mm A Power Supply Wiring Length m B Power Line Fuse or Circuit Breaker Capacity Model 2 5 mm 2 5 mm 5185 22 20 20 Be sure to comply with WIRING SYSTEM DIAGRAM WARNING local codes on running the wire from the indoor unit to the outdoor unit size of wire and wiring met
Download Pdf Manuals
Related Search