Panasonic CS-KS12NB41 & CZ-18BT1U + CU-KS12NK1A Technical & Service Manual Download Page 5 | Manualshive

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Panasonic CS-KS12NB41 & CZ-18BT1U + CU-KS12NK1A Technical & Service Manual Download Page 5

10. CHECKING ELECTRICAL COMPONENTS

10-1. Measurement of Insulation Resistance
10-2. Checking Continuity of Fuse on PCB Ass'y

11. REFRIGERANT R410A:

SPECIAL PRECAUTIONS WHEN SERVICING UNIT

11-1.  Characteristics of New Refrigerant R410A
11-2.  Checklist before Servicing
11-3.  Tools Specifically for R410A
11-4.  Tubing Installation Procedures
11-5.  In Case of Compressor Malfunction
11-6.  In Case Refrigerant is Leaking
11-7.  Charging Additional Refrigerant
11-8.  Retro-Fitting Existing Systems

APPENDIX A Operating Instructions

CS-KS12NB41 & CZ- CU-KS12NK1A

CS-KS18NB4UW & CZ- CU-KS18NKU

CS-KS18NB4UW & CZ- CU-KS18NKUA

APPENDIX B INSTALLATION INSTRUCTIONS

CS-KS12NB41 & CZ- CU-KS12NK1A

CS-KS18NB4UW & CZ- CU-KS18NKU

CS-KS18NB4UW & CZ- CU-KS18NKUA

APPENDIX C Operating Instructions

(CZ-RD515U)

APPENDIX D INSTALLATION INSTRUCTIONS

(CZ-RD515U)

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Summary of Contents for CS-KS12NB41 & CZ-18BT1U + CU-KS12NK1A

Page 1: ...52 361 18 1 852 361 16 1 852 361 19 CS KS12NB41 Body CZ 18BT1U Panel CS KS18NB4UW Body CZ 18BT1U Panel CU KS12NK1A CU KS18NKU CU KS18NKUA REFERENCE NO SM700879 Outdoor Unit Indoor Model No Body Panel Product Code No Body Panel 1 852 361 04 1 852 361 15 1 852 361 06 1 852 361 15 Body Panel Remote Controller Wired Remote Controller Option CS KS12NB41 CZ 18BT1U CS KS18NB4UW CZ 18BT1U CU KS18NKU CU KS...

Page 2: ...ection perform the repair work after sufficiently discharging it Insufficient capacitor discharge may cause an electric shock Do not perform repair work on the electric sections with wet hands Doing so may cause an electric shock Do not start or stop the air conditioner by means of connecting or disconnecting the power plug Doing so may cause an electric shock or fire When conducting repair work o...

Page 3: ...on Caution Do not wash the air conditioner with water as this may cause an electric shock or fire For the repair work in places with high humidity or moisture make sure to ground the unit Failure to do so may cause an electric shock Confirm that the component attachment position wiring condition soldering condition and connector connection are normal If not it may cause overheating or fire Confirm...

Page 4: ...racteristics 6 2 Electric Wiring Diagrams 7 MAINTENANCE 7 1 Address Setting of the Remote Control Unit 7 2 Disconnecting and Connecting Positive Connector for Outdoor Unit 7 3 Disassembly Procedure 8 FUNCTIONS 8 1 Operation Functions 8 2 Protective Functions 9 TROUBLESHOOTING BEFORE CALLING FOR SERVICE 9 1 Precautions before Performing Inspection or Repair 9 2 Method of Self Diagnostics 9 3 Checki...

Page 5: ...mpressor Malfunction 11 6 In Case Refrigerant is Leaking 11 7 Charging Additional Refrigerant 11 8 Retro Fitting Existing Systems APPENDIX A Operating Instructions CS KS12NB41 CZ 18BT1U CU KS12NK1A CS KS18NB4UW CZ 18BT1U CU KS18NKU CS KS18NB4UW CZ 18BT1U CU KS18NKUA APPENDIX B INSTALLATION INSTRUCTIONS CS KS12NB41 CZ 18BT1U CU KS12NK1A CS KS18NB4UW CZ 18BT1U CU KS18NKU CS KS18NB4UW CZ 18BT1U CU KS...

Page 6: ...or Air Intake Temp Outdoor Air Intake Temp Cooling 95 F DB 71 F WB 67 F DB 57 F WB Maximum Minimum 115 F DB 0 F DB Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Models CS KS18NB4UW CZ 18BT1U CU KS18NKU Models CS KS12NB41 CZ 18BT1U CU KS12NK1A CS KS18NB4UW CZ 18BT1U CU KS18NKUA 6 ...

Page 7: ...Max allowable tubing length at shipment Flare Type 25 7 5 44 40 36 51 R410A 2 87 1 300 Electric Expansion Valve Washable Anti Mold DC Twin Rotary Inverter Auto Timer Indoor Outdoor Fan Speeds 24 Hour ON or OFF Timer 1 Hour OFF Timer Auto and 3 steps Auto Hi Me Lo Airflow Direction Indoor Horizontal Controls Temperature Control Control Unit Microprocessor I C Thermister Wireless Remote Control Unit...

Page 8: ...ch mm Package Dimensions Height Width Depth inch mm inch mm Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimensions Weight Outdoor Unit Unit Dimensions Height Width Depth Outdoor Unit CU KS18NKU inch mm 670 26 3 8 880 34 21 32 285 11 7 32 733 28 27 32 1 012 39 27 32 379 14 29 32 41 0 90 4 45 0 99 2 0 28 9 88 inch mm inch mm Package Dimensions Height Width Depth inch mm inch mm ...

Page 9: ... 6 35 1 2 12 7 ft m Max allowable tubing length at shipment Flare Type 25 7 5 44 40 36 51 R410A 2 87 1 300 Electric Expansion Valve Washable Anti Mold DC Twin Rotary Inverter Auto Timer Indoor Outdoor Fan Speeds 24 Hour ON or OFF Timer 1 Hour OFF Timer Auto and 3 steps Auto Hi Me Lo Airflow Direction Indoor Horizontal Controls Temperature Control Control Unit Microprocessor I C Thermister Wireless...

Page 10: ...Width Depth inch mm inch mm Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimensions Weight Outdoor Unit Unit Dimensions Height Width Depth Outdoor Unit CU KS18NKU inch mm 670 26 3 8 880 34 21 32 285 11 7 32 1 012 39 27 32 41 0 90 4 45 0 99 2 0 28 9 88 inch mm inch mm Package Dimensions Height Width Depth inch mm inch mm 208V 313 12 5 16 625 24 19 32 625 24 19 32 18 7 41 3 22 5 ...

Page 11: ... 3 8 9 52 ft m Max allowable tubing length at shipment Flare Type 25 7 5 34 32 31 47 R410A 2 43 1 100 Electric Expansion Valve Washable Anti Mold DC Rotary Inverter Auto Timer Indoor Outdoor Fan Speeds 24 Hour ON or OFF Timer 1 Hour OFF Timer Auto and 3 steps Auto Hi and multi steps Airflow Direction Indoor Horizontal Controls Temperature Control Control Unit Microprocessor I C Thermister Wireless...

Page 12: ...9 32 625 24 19 32 18 7 41 3 11 5 32 283 inch mm 22 5 8 575 inch mm Package Dimensions Height Width Depth 28 1 8 714 inch mm 11 13 32 290 inch mm 24 13 16 630 41 9 19 4 59 0 13 24 19 32 625 6 0 2 7 1 9 16 40 24 19 32 625 26 11 16 678 4 1 8 105 26 3 16 665 7 7 3 5 1 65 0 04 Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimensions Weight Outdoor Unit Unit Dimensions Height Width De...

Page 13: ...5 1 2 12 7 ft m Max allowable tubing length at shipment Flare Type 25 7 5 44 40 36 51 R410A 2 87 1 300 Electric Expansion Valve Washable Anti Mold DC Twin Rotary Inverter Auto Timer Indoor Outdoor Fan Speeds 24 Hour ON or OFF Timer 1 Hour OFF Timer Auto and 3 steps Auto Hi and multi steps Airflow Direction Indoor Horizontal Controls Temperature Control Control Unit Microprocessor I C Thermister Wi...

Page 14: ...Width Depth inch mm inch mm Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimensions Weight Outdoor Unit Unit Dimensions Height Width Depth Outdoor Unit CU KS18NKUA inch mm 670 26 3 8 880 34 21 32 285 11 7 32 733 28 27 32 1 012 39 27 32 379 14 29 32 41 0 90 4 45 0 99 2 0 28 9 88 inch mm inch mm Package Dimensions Height Width Depth inch mm inch mm 230V 313 12 5 16 625 24 19 32 6...

Page 15: ... 1 2 12 7 ft m Max allowable tubing length at shipment Flare Type 25 7 5 44 40 36 51 R410A 2 87 1 300 Electric Expansion Valve Washable Anti Mold DC Twin Rotary Inverter Auto Timer Indoor Outdoor Fan Speeds 24 Hour ON or OFF Timer 1 Hour OFF Timer Auto and 3 steps Auto Hi and multi steps Airflow Direction Indoor Horizontal Controls Temperature Control Control Unit Microprocessor I C Thermister Wir...

Page 16: ...Width Depth inch mm inch mm Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimensions Weight Outdoor Unit Unit Dimensions Height Width Depth Outdoor Unit CU KS18NKUA inch mm 670 26 3 8 880 34 21 32 285 11 7 32 379 14 29 32 41 0 90 4 45 0 99 2 0 28 9 88 inch mm inch mm Package Dimensions Height Width Depth inch mm inch mm 208V 313 12 5 16 625 24 19 32 625 24 19 32 18 7 41 3 22 5 8...

Page 17: ... Copper Tube 2 18 1 2 94 0 273 Face Area Coil Rows Fins per inch Heat Exchanger Coil ft2 m2 DATA SUBJECT TO CHANGE WITHOUT NOTICE Control PCB Control Circuit Fuse Controls Part No Microprocessor 250V 3A CB CS KS12NB4U 1 D12 5 8 L5 3 4 D322 L147 Turbo DC Motor SIC 62FW D866 2 1 8 470 Fan Q ty Dia and Length Type inch mm Fan Motor Coil Resistance Rough Measure RPM Cool Type Model Q ty No of Poles Am...

Page 18: ...50V 3A CB CS KS18NB4U 1 D12 5 8 L5 3 4 D322 L147 Turbo DC Motor SIC 62FW D866 2 1 8 650 Fan Q ty Dia and Length Type inch mm Fan Motor Coil Resistance Rough Measure RPM Cool Type Model Q ty No of Poles Ambient Temp 68 F 20 C Run Capacitor Micro F VAC Ohm DATA SUBJECT TO CHANGE WITHOUT NOTICE Internal Controller Safety Device Type PLD 12230ST 1 1 AC208 to 240V 60Hz 10 8 333 10 Coil Resistance Model...

Page 19: ... Compressor Model Nominal Output Compressor Coil Resistance Ambient Temp 68 F 20 C Ohm DC Twin Rotary Hermetic C 6RVN93H0M 1 050W R S S T T R 0 482 0 482 0 482 CT Peak current cut off control Compressor Discharge Temp Control Operation cut off control in abnormal ambient Temp Safety Device Micro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7L115 Model Operation Temp Open 239 ...

Page 20: ...C Motor Type Compressor Model Nominal Output Compressor Coil Resistance Ambient Temp 68 F 20 C Ohm DC Rotary Hermetic G4C090LU1ER 900W U V V W W U 0 81 0 81 0 81 CT Peak current cut off control Compressor Discharge Temp Control Operation cut off control in abnormal ambient Temp Safety Device Micro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7L115 Model Operation Temp Open 23...

Page 21: ... Motor Type Compressor Model Nominal Output Compressor Coil Resistance Ambient Temp 68 F 20 C Ohm DC Twin Rotary Hermetic C 6RVN93H0M 1 050W R S S T T R 0 482 0 482 0 482 CT Peak current cut off control Compressor Discharge Temp Control Operation cut off control in abnormal ambient Temp Safety Device Micro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7L115 Model Operation Tem...

Page 22: ...r Model KTEC 35 S98 Indoor heat exchanger sensor Model PT2M 51H S3 Compressor temp sensor CU KS12NK1A Model DTN TKS274Y TH2 CU KS18NKU CU KS18NKUA Model DTN TKS293B Resistance k ohm Resistance k ohm Temperature F C Outdoor air temp sensor CU KS12NK1A Model DTN TKS269B CU KS18NKU CU KS18NKUA Model TKS295B Outdoor heat exchanger sensor CU KS12NK1A Model DTN TKS274Y TH1 CU KS18NKU CU KS18NKUA Model T...

Page 23: ...iew 8 1 3 16 21 32 3 1 8 The length of the suspension bolts should be selected so that there is a gap of 1 3 16 or the ceiling 21 32 or more below the lower surface of the main unit as shown in the figure at right If the suspension bolts is too long it will contact the ceiling panel and the unit cannot be installed A A Air intake Discharge outlet Refrigerant tubing liquid tube dia 1 4 flared Refri...

Page 24: ... 21 3 16 6 3 32 4 9 32 2 5 32 Narrow tube service valve dia 1 4 6 35 Wide tube service valve dia 3 8 9 52 3 19 32 15 32 10 7 16 265 11 13 32 12 7 16 Unit inch mm 852 0 0010 12600 0 28 11 32 720 2 1 8 21 9 16 548 5 8 Outdoor Unit CU KS12NK1A 24 ...

Page 25: ... 4 6 35 Wide tube service valve dia 1 2 12 70 4 3 8 2 5 32 6 17 32 5 23 32 3 32 26 3 8 670 23 32 1 13 16 34 21 32 880 23 15 16 5 11 32 15 32 11 7 32 285 12 7 32 13 5 32 11 17 32 I D 2 3 3 2 2 I D 1 5 1 6 1 3 8 2 17 32 2 13 32 Outdoor Unit CU KS18NKU CU KS18NKUA 25 ...

Page 26: ...FRIGERANT FLOW DIAGRAM 4 1 Refrigerant Flow Diagram Indoor Unit CS KS12NB41 CZ 18BT1U Outdoor Unit CU KS12NK1A Compressor Accumulator Wide tube service valve Narrow tube service valve Heat exchanger Muffler Cooling cycle Outdoor unit Electric expansion valve M Muffler H P High pressure switch 26 ...

Page 27: ...oor Unit CS KS18NB4UW CZ 18BT1U Outdoor Unit CU KS18NKU CU KS18NKUA Heat exchanger Strainer Compressor Accumulator Wide tube service valve Narrow tube service valve Heat exchanger Muffler Cooling cycle Outdoor unit Electric expansion valve M H P High pressure switch 27 ...

Page 28: ... wide tube service valve psig MPaG Operating current A 73 0 5 102 0 7 131 0 9 Outdoor inlet air DB temp F C Outdoor inlet air DB temp F C Indoor discharge air temperature F C 77 25 86 30 95 35 104 40 Hi Fan Lo Fan 10 11 12 13 14 15 77 25 86 30 95 35 104 40 Outdoor inlet air DB temp F C Indoor Air Temp 86 F 30 C 80 F 27 C 75 F 24 C Indoor Air Temp 86 F 30 C 80 F 27 C 75 F 24 C Indoor Air Temp 86 F ...

Page 29: ... service valve psig MPaG Operating current A 73 0 5 102 0 7 131 0 9 Outdoor inlet air DB temp F C Outdoor inlet air DB temp F C Indoor discharge air temperature F C 77 25 86 30 95 35 104 40 Hi Fan Lo Fan 5 6 7 8 9 10 77 25 86 30 95 35 104 40 Outdoor inlet air DB temp F C Indoor Air Temp 86 F 30 C 80 F 27 C 75 F 24 C Indoor Air Temp 86 F 30 C 80 F 27 C 75 F 24 C Indoor Air Temp 86 F 30 C 80 F 27 C ...

Page 30: ...C 12 230 12 030 11 790 11 580 10 580 7 950 CI 0 80 0 94 1 08 1 18 1 25 1 07 72 22 2 SHC 7 070 6 930 6 840 6 700 6 200 4 970 63 76 24 4 SHC 7 940 7 800 7 710 7 570 7 070 5 840 17 2 80 26 7 SHC 8 850 8 720 8 580 8 490 7 980 6 750 84 28 9 SHC 9 720 9 590 9 450 9 360 8 850 7 620 88 31 1 SHC 10 590 10 450 10 360 10 230 9 720 7 950 TC 12 460 12 290 12 070 11 900 10 700 8 040 CI 0 82 0 96 1 10 1 20 1 25 ...

Page 31: ... 790 17 400 17 000 14 080 9 650 CI 1 17 1 37 1 57 1 75 1 67 1 30 72 22 2 SHC 10 400 10 200 10 000 9 800 8 340 6 290 63 76 24 4 SHC 11 590 11 390 11 190 11 000 9 540 7 480 17 2 80 26 7 SHC 12 850 12 650 12 450 12 260 10 800 8 740 84 28 9 SHC 14 040 13 850 13 650 13 450 11 990 9 650 88 31 1 SHC 15 240 15 110 14 840 14 640 13 180 9 650 TC 18 510 18 220 17 860 17 500 14 220 9 750 CI 1 19 1 40 1 60 1 7...

Page 32: ...C 5 650 5 650 5 700 8 580 5 740 5 740 5 790 63 76 24 4 SHC 6 520 6 520 6 570 9 450 6 610 6 610 6 660 17 2 80 26 7 SHC 7 440 7 440 7 480 9 590 7 530 7 530 7 530 84 28 9 SHC 8 300 8 300 8 350 9 590 8 400 8 400 8 400 88 31 1 SHC 9 170 9 170 9 220 9 590 9 270 9 270 9 270 TC 9 250 9 290 9 410 9 530 9 620 9 670 9 720 CI 0 61 0 63 0 57 0 54 0 52 0 56 0 59 72 22 2 SHC 4 370 4 370 4 420 8 580 4 510 4 560 4...

Page 33: ... 0 93 0 78 0 75 0 72 0 75 72 22 2 SHC 6 090 6 160 6 220 11 860 6 360 6 420 6 420 67 76 24 4 SHC 7 280 7 350 7 420 13 050 7 550 7 610 7 680 19 4 80 26 7 SHC 8 540 8 610 8 680 13 380 8 810 8 870 8 870 84 28 9 SHC 9 740 9 800 9 870 13 380 10 000 10 070 10 070 88 31 1 SHC 11 000 11 000 11 060 13 380 11 190 11 260 11 330 TC 12 550 12 630 12 830 13 160 13 390 13 600 13 750 CI 1 00 1 03 1 03 0 85 0 80 0 ...

Page 34: ...1A Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 115V Single phase 60Hz Rating conditions Running amp 0 21 Power input 18 12 39 1 242 Cooling 12 6 1 260 Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 35 C DB A W 34 ...

Page 35: ...7 F 19 4 C WB Outdoor air temperature 95 F 35 C DB Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 35 C DB Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 35 C DB Cooling 9 1 1 860 Indoor Unit CS KS18NB4UW CZ 18BT1U Outdoor Unit CU KS18NKUA Indoor Unit Outdoor Unit Fan Motor Fan Motor Compressor...

Page 36: ...ONTROLLER TO OUTDOOR UNIT GND FERRITE CORE AC1 AC2 SI 1 RED YEL BLU 1 1 YEL RED 3 3 1 1 2 1 1 2 2 1 1 2 2 2 3 3 4 4 5 5 6 6 7 7 1 1 2 2 3 3 4 4 5 5 6 6 7 7 1 1 2 2 3 3 4 4 5 5 1 1 2 2 3 3 4 4 5 5 6 6 7 7 1 1 2 2 3 3 4 4 1 1 2 2 1 1 3 3 3 3 4 4 5 5 1 1 2 2 1 1 2 2 1 1 2 2 3 3 4 4 5 5 1 1 2 2 3 3 4 4 5 5 6 6 6 6 7 7 8 8 9 9 10 10 YEL RED BRN RED ORG YEL PNK BLU VLT 2 3 RED BLK BLK WHT WHT GRN YEL RE...

Page 37: ...Outdoor Unit CU KS12NK1A 8FA2 5251 12300 2 37 ...

Page 38: ...OIL THERMISTOR MV0 MAGNETIC COIL w w ELEC SYSTEM ASSY 1 2 3 4 5 6 REACTANCE WHT 2P CONNECTOR WHT WHT WHT WHT RED RED PINK RED PINK WHT WHT WHT WHT WHT WHT BLU BLU U V W BLK BLK BLK BLK YEL YEL ORG YEL GRY BLK RED COMP A TH COIL OUTDOOR 7P CONNECTOR WHT 2P CONNECTOR RED 2P CONNECTOR BLK WHT WHT BLK BLK BLK BLK BLK 1 4 5 6 POWER RELAY GND GND TO INDOOR UNIT POWER SUPPLY S R T CM N L HIGH PRESSURE SW...

Page 39: ... Fig 2 3 Press and hold the remote controller HIGH POWER button and 1 HR TIMER button Then press and hold the ACL reset button with a pointed object such as the tip of a pen After 5 seconds release ACL button first then release HIGH POWER and 1 HR TIMER buttons oP 1 test run appears blinking in the remote controller clock display area 4 Each time the 1 HR TIMER button is pressed the display change...

Page 40: ...lways hold the cover to disconnect See illustration at left For the connector without the resin cover push the lock in the direction of 2 while pulling it off How to Connect In order to connect hold the resin cover of the connector and push it in Confirm the click sound for the inside lock Pull the cover upward When the cover is pulled upward the lock is released with the sequence of 1 and 2 7 2 D...

Page 41: ...nectors in the control box 1 Remove the 2 screws and remove the control box cover Fig 4 2 Disconnect the connectors CN04 FLAP 5P CN12 RC 4P and CN13 IND 7P Fig 5 Latch Latch Hook Hinge Air intake grill Screw Control box cover CN13 CN04 CN12 Fig 1 Fig 4 Fig 5 Fig 2 Fig 3 Hinge Control PCboard To avoid electrical shock hazard be sure to disconnect power before attempting to disassemble the unit When...

Page 42: ...r and remove the cover with the section 2 pulled down Fig 7 4 Remove the strap 3 locations from the hook on the ceiling panel Fig 8 There is no strap on the indicator cover 5 Remove the bolt 4 locations with a washer and remove the ceiling panel Fig 9 Screw Bolt Bolt Screw Indicator cover Corner cover Corner cover Corner cover Clamp Clamp Pull down section 2 Lead wire Cover Center 1 Fig 6 Fig 7 Fi...

Page 43: ...d control box 1 Remove a screw and remove the terminal cover Fig 11 2 Remove the 2 screws and remove the power box cover Fig 11 3 Disconnect the power lines No 1 and No 2 signal line No 3 and ground cable from the terminals in the power box Fig 12 Indoor air temperature sensor CN08 Terminal Fig 10 Fig 11 Fig 12 Ground cable Terminal cover Screw Screw Power box cover Power lines Signal line 43 ...

Page 44: ... connector CN03 DCM 6P in the power box Fig 14 6 Remove the 4 screws and remove the power box Fig 14 7 Disconnect the connectors CN06 FS 3P and CN09 COIL 1 2P in the control box Fig 15 8 Remove the 2 screws and remove the control box Fig 15 Fig 13 Fig 14 Fig 15 Screw Screw Screw Screw Screw CN06 CN03 Screw Screw Ground cable CN07 CN09 44 ...

Page 45: ...e the drain cap to drain the water Fig 16 2 Refer to the installation instructions for recovery of refrigerant or removal of the power cable or tubing 7 3 6 Remove the main body lower section 1 Remove the 4 screws Fig 16 2 Remove the 2 screws Fig 17 3 Disconnect the connector CN03 DCM 6P in the power box Fig 18 4 Lift the main body lower section and remove it from the main body upper section Screw...

Page 46: ... float switch 1 Remove the 2 screws Fig 20 2 Loosen the clamp and disconnect the drain hose from the drain pump Fig 20 3 Remove the drain pump from the main body upper section Fig 20 4 Remove a nut and remove the float switch Fig 21 Heat exchanger sensor Fig 20 Fig 21 Fig 19 Holder Drain pump Screw Clamp Float switch Nut Drain hose 46 ...

Page 47: ...ove the fan motor Fig 23 7 3 10 Remove the heat exchanger 1 Remove the 3 screws Fig 24 2 Remove the 3 screws Fig 25 3 Remove the heat exchanger from the main body upper section with the heat exchanger lifted Fig 22 Fig 23 Fig 24 Fig 25 Turbo fan Nut Screw Nut Fan motor Screw Screw Heat exchanger Screw Main body upper section 47 ...

Page 48: ...3 C below the set temperature When the monitoring range is entered the compressor stops and the indoor fan operates with 1 f fluctuation DRY A DRY B Monitor Conditions are monitored at all times when the room temperature is below 59 F 15 C Load COOL zone A zone B zone Emergency operation is available when the remote controller malfunctions has been lost or otherwise cannot be used The set temperat...

Page 49: ...er operation Frequency MAX 0 Start End Time 30 min 5 min Setting temperature Press the NIGHT SETBACK button When NIGHT SETBACK operation is set the temperature and fan speed settings will be adjusted automatically to allow comfortable sleep When NIGHT SETBACK operation is set mark appears on the remote controller The main unit display lamp also becomes dimmer COOL and DRY modes When the night setb...

Page 50: ... reaches 46 F 8 C or above A B C a b c d Indoor heat exchanger temperature F C 36 2 43 6 46 8 This function controls the operation frequency to prevent the compressor discharge temperature from rising more than a specified temperature a Area Automatic capacity control b When the temperature rises above Point A the operation frequency is reduced at a specified rate c Area Further frequency increase...

Page 51: ...ontroller HIGH POWER button and 1 HR TIMER button Then press and hold the ACL reset button with a pointed object such as the tip of a pen After 5 seconds release ACL button first then release HIGH POWER and 1 HR TIMER buttons oP 1 test run appears blinking in the remote controller clock display area Step 2 Next press the 1 HR TIMER button once to change the display from oP 1 to oP 3 self diagnosti...

Page 52: ...T LOCATION 3 I D PCB FAILURE I D INDOOR 1 OPEN OR SHORT CIRCUIT IN SENSOR 2 POOR CONTACT AT CONNECTOR OR OPEN CIRCUIT AT TERMINAL PRESS FIT LOCATION 3 O D PCB FAILURE O D OUTDOOR O D PCB FAILURE 1 MIS WIRING 2 AC POWER FAILURE 3 BLOWN FUSE 4 POWER RELAY FAILURE 5 I D OR O D PCB FAILURE 6 O D FAN MOTOR FAILURE 7 REACTOR FAILURE 8 HIGH PRESSURE SW FAILURE 9 OLR FAILURE 10 MAGNETIC COIL FAILURE 1 HIC...

Page 53: ... current mode is TEST run If there are no problems with the above then check the outdoor unit 1 The rated voltage must be present between inter unit wirings 1 and 2 Connect a 5 k ohm resistor between inter unit wirings 2 and 3 When the voltage at both ends is measured approximately 12 to 15V DC must be output and the multimeter pointer must bounce once every 8 seconds Or instead of measuring the v...

Page 54: ...age B For terminal strip short circuit work or inter unit wiring removal turn off the power to avoid an electric shock Release the terminal strip short circuit after the completion of self diagnostics Do not perform the short circuit work between any other terminals except for specified ones on the specified terminal strip If such work is performed between the incorrect terminals the unit might be...

Page 55: ...he operation button on the indoor unit 2 Perform the self diagnosis five seconds after the operation start 1 Turn off the power and wait until the power lamp LED of the outdoor unit controller is turned OFF 2 Remove the short circuit between the terminals 2 and 3 on the outdoor unit terminal strip 3 Disconnect the cable from the terminal 3 on the indoor unit terminal strip Fig 4 Short circuit betw...

Page 56: ...ter the operation start 1 Turn off the power and wait until the power lamp LED of the outdoor unit controller is turned OFF 2 Disconnect the cable from the terminal 3 on the Outdoor unit terminal strip Fig 6 Defect in the inter unit cable 1 Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit 2 Perform the self diagnosis five seconds after...

Page 57: ... 1 The fan does not stop when the unit stops Indoor unit controller trouble Trouble symptom 2 The fan motor does not rotate when the unit is operating Diagnostic procedure Disconnect the motor connectors and measure the voltage at the DC motor connectors on the indoor unit controller 3 locations Diagnostic results All of the above measured values are normal Fan motor trouble Replace the motor Any ...

Page 58: ...uickly stops when the outdoor unit operates There is trouble in the system that provides feedback of motor rotation speed from the motor to the outdoor unit controller Trouble symptom 4 Fan motor rotation speed does not change during outdoor unit operation Trouble symptom 5 Fan motor rotation speed varies excessively during outdoor unit operation Remedy for symptom 3 to 5 It is not possible to ide...

Page 59: ...distance from the noise source 1 Use shielded wires 2 Move unit away from the noise source Trouble Either of the following trouble may occur 1 The unit may stop suddenly during operation 2 Indicator lamps may flicker 2 Electromagnetic interference This refers to noise generated by high speed switching of the microcomputer and compressor This noise radiates through space and returns to the electric...

Page 60: ...g 1 10 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 10 1 3 Outdoor Unit Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and me...

Page 61: ... Fig 6 Fuse 10 2 Checking Continuity of Fuse on PCB Ass y 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 Fig 6 61 ...

Page 62: ...use of a change in 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 in liquid phase When refrigerant R410A is used the composition will differ depending on ...

Page 63: ...n R410A refrigerant is exposed to fire Therefore be sure to provide ample ventilation during installation work Caution in case of R410A leak Check for possible leak points with the special leak detector for R410A If a leak occurs inside the room immediately provide thorough ventilation A D Flare tool for R410A A D Conventional flare tool R22 Spacer 11 2 Checklist before Servicing Use a clutch type...

Page 64: ...s which can be com monly used for R22 R407C and R410A CAUTION The above tools specifically for R410A must not be used for R22 and R407C Doing so will cause malfunction of the unit For the above vacuum pump 1 2 and vacuum pump adapter 3 those for R22 type units can be used for R410A type However they must be used exclusively for R410A and never alternately with R22 and R407C For details on tubing i...

Page 65: ...it quickly 3 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R410A Also do not use oxygen or any flammable gas 4 Evacuation Use a solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption the valve will prevent the pump oil from flowing back The equipment may be damaged i...

Page 66: ...use an 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 the refrigerant if the amount in the charging cylinder is less than 20 Also charge the minimum necessary amount to the charging cylinder before using it to charge the air condi...

Page 67: ...lux and wax for R410A Prevent oxide film from forming inside the tubes utilizing substitution with nitrogen N2 in the refrigerant circuit of the unit Leave ends of tubes open during welding 4 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R410A Also do not use oxygen or any flammable gas 5 Evacuation Use a solenoid valve installed vacuum pump s...

Page 68: ... R410A for existing units which use R22 This will cause the air conditioner to operate improperly and may result in a hazardous condition 11 8 2 Use of Existing Tubing If replacing an older unit that used refrigerant R22 with a R410A unit do not use its existing tubing Instead completely new tubing must be used CAUTION Never charge additional refrigerant if refrigerant is leaking from the unit Fol...

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Page 70: ...Operating Instructions APPENDIX A 852 6 4181 211 00 1 CS KS12NB41 CZ 18BT1U CU KS12NK1A CS KS18NB4UW CZ 18BT1U CU KS18NKU CS KS18NB4UW CZ 18BT1U CU KS18NKUA A 1 ...

Page 71: ...ing the unit read these operating instructions thoroughly and keep them for future reference CV6233187622 This air conditioner uses the refrigerant R410A Ceiling Panel CZ 18BT1U Multiple use is applied for the model CS KS18NB4UW only Single use means that only one indoor unit is connected with one outdoor unit in a one unit to one unit configuration Multiple use i e Flexi Multi system means that t...

Page 72: ...rates at maximum output for 30 minutes regardless of the desired temperature The fan speed is 1 step above High CONTENTS Page FEATURES 2 PRODUCT INFORMATION 2 SAFETY PRECAUTIONS 2 INSTALLATION LOCATION 3 ELECTRICAL REQUIREMENTS 3 SAFETY INSTRUCTIONS 3 NAMES OF PARTS 4 USING THE REMOTE CONTROLLER 8 OPERATION WITH THE REMOTE CONTROLLER 9 1 Operation 9 2 Adjusting the Fan Speed 9 3 Fan Only 9 4 Night...

Page 73: ... outdoor units by users Engage authorized dealer or specialist for cleaning In case of malfunction of this appliance do not repair by yourself Contact to the sales dealer or service dealer for a repair Refrigerant gas leakage may cause fire For safety be sure to turn the air conditioner off and also to disconnect the power before cleaning Pull off the power plug from a receptacle or switch off the...

Page 74: ...ure fan speed timer setting and air sweeping Refrigerant Tubes The indoor and outdoor units are connected by copper tubes through which refrigerant gas flows Drain Hose Moisture in the room condenses and drains off through this hose Outdoor Condensing Unit The outdoor unit contains the compressor fan motor heat exchanger coil and other electrical components INDOOR UNIT Air Intakes Remote Controlle...

Page 75: ...ogram Timer ON Timer OFF Timer 1 hour OFF Timer 5 NIGHT SETBACK 6 Confirmation of transmission 7 Auto flap indication Flap angle indication Sweep indication 8 High power operation Displayed when setting timer Displayed when transmitting data Displayed when indoor unit sensor is in use Displayed when setting temperature Displayed when temperature is shown Displayed when the time display is set to 1...

Page 76: ...small tipped object such as a ballpoint pen the mark will appear at the display And the room temperature is detected by the sensor which is built into the indoor unit and the air conditioner is controlled accordingly If the remote controller is located near a heat source such as a space heater or in direct sunlight press the SENSOR button to switch to the sensor on the indoor unit NOTE ADDRESS swi...

Page 77: ...n For details see 4 Night Setback Mode When you press this button in the DRY or COOL mode the mark appears in the display and the remote controller will automatically adjust the set temperature to save energy Time display selector button This switches the time display between 24 hour time and 12 hour time The illustration above pictures the remote controller after the cover has been opened The rem...

Page 78: ...and during air conditioner operation the transmitter on the remote controller should be pointed towards the receiver on the indoor unit Make sure that there are no objects between the remote controller and receiver which could block the signal The batteries last about six months depending on how much you use the remote controller Replace the batteries when the remote controller s display fails to ...

Page 79: ...AN SPEED selector button to the setting you want STEP 5 Press the FLAP button and set the airflow direction as desired Refer to ADJUSTING THE AIRFLOW DIRECTION on page 12 To stop the air conditioner press the ON OFF operation button again Choose the best position in the room for the remote controller which also acts as the sensor for room comfort and transmits the operating instructions Once you v...

Page 80: ...oor unit being protected from ice or frost when combined with the outdoor unit for Low Ambient Cooling models In the event of power failure the unit will stop When the power is resumed the unit will restart automatically in approximately 5 minutes by the remote controller Clicking sound is heard from the air conditioner In cooling operation any plastic parts may shrink due to a sudden temperature ...

Page 81: ...Press the CLOCK button once if the time indicator is not flashing The time indication alone flashes 2 Press the Advance Return button until PM 10 30 is displayed The time can be set in 1 minute increments Holding down the button advances the time rapidly in 10 minute increments 3 Press the CLOCK button again This completes the setting of the current time Operation Indication 1 Press the OFF TIME s...

Page 82: ...let direct sunlight into the room Use sunshades blinds or curtains If the walls and ceiling of the room are warmed by the sun it will take longer to cool the room Do Always try to keep the air filter clean Refer to CARE AND CLEANING A clogged filter will impair the performance of the unit To prevent conditioned air from escaping keep windows doors and any other openings closed ADJUSTING THE AIRFLO...

Page 83: ...ing a footstool or the like be careful not to let it tip over Cleaning the main unit and Remote Controller Wipe clean using a soft dry cloth To remove stubborn dirt moisten a cloth in warm water no hotter than 104 F wring thoroughly and then wipe INDOOR UNIT OPERATION button OPERATION lamp Cooling operation Stop NOTE Cleaning and maintenance operations must be carried out by specially trained pers...

Page 84: ... the two air intake grille hinges 4 Clean the grille gently using a soft sponge or the like Then dry it with care Neutral detergent may be used to remove stubborn dirt Then rinse thoroughly with water and dry it Care After a prolonged idle period Check the indoor and outdoor unit air intakes and outlets for blockage if there is a blockage remove it Care Before a prolonged idle period Operate the f...

Page 85: ... Outdoor Unit Remove obstruction Poor cooling performance 1 Dirty or clogged air filter 1 Clean air filter to improve airflow 2 Heat source or many people in room 2 Eliminate heat source if possible 3 Doors and or windows are open 3 Shut them to keep the heat out 4 Obstacle near air intake or air discharge port 4 Remove it to ensure good airflow 5 Thermostat is set too high for cooling 5 Set the t...

Page 86: ...ration Outdoor Hi Indoor H M L Outdoor Hi Indoor H M L Heating Operation dB A dB A Indoor Unit CS KS12NB41 34 32 31 11 5 32 22 5 8 22 5 8 283 575 575 35 3 16 0 Indoor Unit CS KS18NB4UW 44 40 36 11 5 32 22 5 8 22 5 8 283 575 575 35 3 16 0 Outdoor Unit CU KS12NK1A 47 21 9 16 28 11 32 10 7 16 548 720 265 75 0 34 0 Outdoor Unit CU KS18NKU CU KS18NKUA 51 26 3 8 34 21 32 11 7 32 670 880 285 90 4 41 0 Mo...

Page 87: ... 575 35 3 16 0 Model No Outdoor Unit CU 4KS24NBU CU 3KS19NBU Single phase 208 230 V 60 Hz Heating Capacity Operation Sound Unit Dimensions H W D Net Weight Power Source Cooling Capacity kW BTU h kW BTU h inch mm lbs kg Cooling Operation Hi Heating Operation Hi dB A dB A 50 18 800 9 800 18 800 5 50 2 90 5 50 29 1 8 35 7 16 12 19 32 740 900 320 138 9 63 0 50 25 400 9 800 25 400 7 50 2 90 7 50 29 1 8...

Page 88: ...A 2 INSTALLATION INSTRUCTIONS APPENDIX B 852 6 4190 574 00 1 CS KS12NB41 CZ 18BT1U CU KS12NK1A CS KS18NB4UW CZ 18BT1U CU KS18NKU CS KS18NB4UW CZ 18BT1U CU KS18NKUA ...

Page 89: ...ing Instructions 3 8 Recommended Wire Length and Diameter 3 9 Wiring Instructions for Inter unit Connections 4 HOW TO INSTALL THE OUTDOOR UNIT 20 4 1 Wiring Instructions for the Outdoor Unit 5 REFRIGERANT TUBING 21 5 1 Use of the Flaring Method 5 2 Flaring Procedure with a Flare Tool 5 3 Caution before Connecting Tubes Tightly 5 4 Connecting Tubing between Indoor and Outdoor Units 5 5 Insulation o...

Page 90: ... connection points and a possible fire hazard 7R SUHYHQW SRVVLEOH KD DUGV IURP LQVXODWLRQ IDLOXUH the unit must be grounded When Transporting Be careful when picking up and moving the indoor and out door units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin alu minum fins on the air conditioner can cut your fingers When Installing Select an ...

Page 91: ...KHFN that no metal scraps or bits of wiring have been left inside the unit being serviced Others 9HQWLODWH DQ HQFORVHG DUHDV ZKHQ LQVWDOOLQJ RU WHVWLQJ the refrigeration system Escaped refrigerant gas on contact with fire or heat can produce dangerously toxic gas RQILUP XSRQ FRPSOHWLQJ LQVWDOODWLRQ WKDW QR UHIULJHUDQW gas is leaking If escaped gas comes in contact with a stove gas water heater ele...

Page 92: ...e indoor and outdoor units and make sure all accessory parts listed are with the system before beginning 1 1 Tools Required for Installation not supplied 1 Standard screwdriver 2 Phillips head screwdriver 3 Knife or wire stripper 4 Tape measure 5 Carpenter s level 6 Sabre saw or key hole saw 7 Hacksaw 8 Core bits 9 Hammer 10 Drill 11 Tube cutter 12 Tube flaring tool 13 Torque wrench 14 Adjustable ...

Page 93: ...ble 3 and Fig 2 install the indoor unit more than 3 3 1 m away from any antenna or power lines or connecting wires used for television radio telephone security system or intercom Electrical noise from any of these sources may affect operation Fig 1 3 3 ft 1m 1m 1m 3 3 ft 1m 3 3 ft 3 3 ft 3 3 ft 1m Fig 2 Tubing length L Elevation difference H Outdoor unit Indoor unit WARNING To prevent abnormal hea...

Page 94: ...ater damage and decreased service life Fig 5a install cushion rubber under unit s feet to reduce vibration and noise Fig 5b use lug bolts or equal to bolt down unit reducing vibration and noise install in a location where no antenna of a television or radio exists within 10 3 m Outdoor unit Hot air Heat source Exhaust fan NO Fig 3 Air intake Min 2 5 cm Air discharge Min 2 5 cm Min 8 20 cm Valve si...

Page 95: ...s must be installed on the outdoor unit Fig 5c This unit is designed so that the fan of the outdoor unit runs at low speed when the air conditioner is operated at low outdoor air temperatures When the outdoor unit is exposed to strong wind the system pressure drops because of the freeze protector Install a pair of windbaffle plates at the front and back of the outdoor unit if it will be subject to...

Page 96: ...4 19 64 17 3 8 25 64 5 29 32 25 32 25 32 mm 550 20 55 440 330 10 15 9 7 5 441 10 150 20 20 Dimensions A B C D E F G H I J K L M Model CU KS12NK1A inch 19 3 32 20 3 32 13 25 32 5 29 32 17 17 32 25 32 2 5 32 14 9 16 2 3 4 3 11 32 19 32 1 3 8 1 3 8 mm 485 510 350 150 445 20 55 370 70 85 15 35 35 Air Intake Baffle Air Discharge Baffle Fig 5d Item Q ty Remarks Baffle plate 1 Screw 5 32 15 32 4 12 mm ta...

Page 97: ... M6 15 20 mm 3 Nut 15 64 M6 3 Washer 3 Spring washer 3 Item Q ty Remarks Baffle plate 1 Bolt 15 64 13 32 19 32 M6 10 15 mm 4 Nut 15 64 M6 4 Washer 4 Spring washer 4 Air Intake Baffle Air Discharge Baffle Dimensions A B C D E F G H I J K L O Q R Model CU KS18NKUA inch 24 13 32 25 32 1 25 32 22 1 4 9 1 4 9 1 4 25 64 25 32 19 32 23 1 8 19 64 25 64 5 29 32 25 32 25 32 mm 620 20 45 565 235 235 10 20 15...

Page 98: ...ts to be used are 15 64 M6 ISO standard and the recommended length of the bolts is between 19 32 25 32 inch 15 20 mm 5 Use washers and spring washers to tightly fasten the windbaffle to the unit 2 Right side 1 Remove the front panel from the unit 2 Use 2 preholes on the panel side R to install the baffle plate 3 Remove the panel side R from the unit by removing the screws These screws are used in ...

Page 99: ...nd R from the unit and drill 4 holes of ø1 4 inch 6 5 mm at the prescribed positions 2 Install the windbaffle on the unit using field supply bolts and nuts 3 Recommended bolts to be used are 15 64 M6 ISO standard and the recommended length of the bolts is between 13 32 19 32 inch 10 15 mm 4 Use washers and spring washers to tightly fasten the windbaffle to the unit Fig 5j Panel side R Panel top Pa...

Page 100: ...ram The dia gram shows the relationship between the positions of the suspension fitting unit and panel Fig 6 2 3 3 Placing the Unit Inside the Ceiling 1 Be sure to remove the fan protection 4pcs for transportation before hanging up the indoor unit 2 When placing the unit inside the ceiling determine the pitch of the suspension bolts using the supplied full scale installation diagram Fig 6 3 Tubing...

Page 101: ...e drain hose first place 1 of the 2 hose bands over the unit drain port and the other hose band over the hard PVC pipe not supplied Then connect both ends of the supplied drain hose Fig 6 5 3 On the unit drain side grasp the hose band with pliers and insert the drain hose all the way to the base If other commercially available hose bands are used the drain hose may become pinched or wrinkled and t...

Page 102: ...t position 1 Check that the ceiling hole is 23 5 8 600 mm 23 5 8 600 mm Fig 6 11 2 Confirm that the position of the indoor unit and the ceiling as shown in the diagram If the positions of the ceiling sur face and unit do not match air leakage water leakage flap operation failure or other problems may occur Fig 6 11 The drain pump will continue to operate for a minimum of 6 min utes after the FS 3P...

Page 103: ... the unit and the ceiling panel or between the ceiling panel and the ceiling surface If there is a gap between the panel and the ceiling leave the ceiling panel attached and make fine adjustments to the installation height of the unit to eliminate the gap with the ceiling CAUTION Fig 6 17 Fig 6 18 Fig 6 19 Corner cover Indicator cover Press Pull up 2 1 latch Temporary latches Temporary DRAIN mark ...

Page 104: ...nal will not be received If the connectors are not connected the auto flap will not operate Be sure to connect them securely A Attaching the corner cover 1 Check that the safety strap from the corner cover is fas tened to the ceiling panel pin as shown in the figure Fig 6 23 2 Use the supplied screws to attach the corner cover to the ceiling panel B Attaching the air intake grille To install the a...

Page 105: ...Table 4 lists recommended wire lengths and diameters for power supply systems Refer to the wiring system diagram Fig 7a or Fig 7b for the meaning of A B and C in Table 4 Refer to your local codes or in the absence of local codes see the National Electric Code ANSI NFPA70 NOTE 17 3 6 5 Checking After Installation Check that there are no gaps between the unit and the ceiling panel or between the cei...

Page 106: ...may affect the operation To avoid the risk of electric shock each air conditioner unit must be grounded For the installation of a grounding device please observe local electrical codes Grounding is necessary especially for units using inverter circuits in order to release charged electricity and electrical noise caused by high tension Otherwise electrical shock may occur Place a dedicated ground m...

Page 107: ...fix it securely with the removed terminal screw using a screwdriver Loose wiring may cause the ter minal to overheat or result in unit malfunction A fire hazard may also exist Therefore be sure all wiring is tightly connected WARNING Fig 9 STRIP SIZE 9 32 7 mm ACTUAL SIZE Fig 8 Fig 10 Solid wire Loop Insulation Strip 15 16 25 mm 1 3 2 Earth screw Clamping strap Conduit Inter unit Power wiring Loca...

Page 108: ... Outdoor Unit First refer to Section 2 Installation Site Selection 4 1 Wiring Instructions for the Outdoor Unit Regulations on wire size differ from locality to locality For field wiring requirements please refer to your local electrical codes Make sure that the installation fully complies with all local and national regulations 1 Remove access panel C Fig 14 2 Connect the inter unit and power sup...

Page 109: ...are tool Figs 17 and 18 Use RIDGID or equivalent A good flare should have the following characteristics inside surface is glossy and smooth edge is smooth tapered sides are of uniform length 5 3 Caution before Connecting Tubes Tightly a Be sure to apply a sealing cap or water proof tape to prevent dust or water from getting into the tubes before they are used b Be sure to apply refrigerant lubrica...

Page 110: ...good insula tion characteristics be easy to use be age resistant and must not easily absorb moisture After a tube has been insulat ed never try to bend it into a narrow curve because it can cause the tube to break or crack CAUTION Fig 23 Fig 24 Never grasp the drain or refrigerant connecting out lets when moving the unit Indoor unit Outdoor unit Spanner Torque wrench Insulation tape supplied Flare...

Page 111: ...ning in the refrigerant system have undesirable effects as indicated below Therefore they must be purged completely pressure in the system rises operating current rises cooling or heating efficiency drops moisture in the air may freeze and block capillary tubing water may lead to corrosion of parts in the refrigerant system Air Purging with a Vacuum Pump for Test Run 1 Check that each tube both na...

Page 112: ... stem on the narrow tube service valve counter clockwise by 90 degrees 1 4 turn for 10 seconds and then turn the stem clockwise to close it again Fig 28 7 Leak test all joints at the tubing both indoor and outdoors with soapy water Bubbles indicate a leak Tighten the joint more when leaks then check if there is no leak Be sure to wipe off the soap with a clean cloth 8 With the hex wrench turn the ...

Page 113: ...V WKH V VWHP VKLIWV LQWR FRROLQJ operation and cool air will start to be felt Cooling mode test run is unaffected by the room tempera ture 3 Press the ON OFF operation button of the remote controller again to stop the test run Fig 29 4 Finally press the ACL Reset button of the remote controller to release it from Test Run mode to return to normal mode Fig 29 µ DQG R3 µ ZLOO GLVDSSHDU IURP WKH UHPR...

Page 114: ...wide tube valve stem Then quickly stop the unit 5 Disconnect all gauges and hoses and replace the valve caps as they were before Basic Functions of the Service Valves The basic functions of the service valves are given in Table 7 below Action Narrow Tube Service Valve 2 Way Wide Tube Service Valve 3 Way CLOSED Fully OPEN Fully OPEN Shipping Operating and test running the air conditioner Measuring ...

Page 115: ...ioner operates from that location The indoor unit should make a beeping sound to indicate that it has received the signal Fig 36 To take out the remote controller pull it forward Service Valve Connections a Temporary connection Screw in 3 5 turns by hand Fig 34 b To fasten the flare nuts apply specified torque as Table 8 and Fig 35 Table 8 Fig 34 Fig 35 CAUTION Be sure to tighten the flare nut usi...

Page 116: ...ress and hold the ACL Reset button with a pointed object such as the tip of a pen After 5 seconds release the ACL button first then release the HIGH POWER and 1HR TIMER but tons oP 1 Test Run appears blinking in the remote controller clock display area 4 Each time the 1HR TIMER button is pressed the display changes as shown below Press this but ton 2 times to change the display to oP 7 Address set...

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Page 118: ...Operating Instructions CZ RD515U 852 6 4181 230 00 1 APPENDIX C A 3 ...

Page 119: ...264181230001 CV6233187877 This wired remote controller is designed for both the COOL DRY HEAT Model and COOL DRY Model indoor unit Once the wired remote controller is connected the wireless remote controller cannot be used Before operating the unit read these operating instructions thoroughly and keep them for future reference ...

Page 120: ... Model Since the wired remote controller is designed to be commonly used for various air conditioners some of the functions of the wireless remote controller supplied with the indoor unit cannot be used Single use means that only one indoor unit is connected with one outdoor unit in a one unit to one unit configuration Multiple use i e Flexi Multi system means that two or more indoor units are con...

Page 121: ...unction of this appliance do not repair by yourself Contact to the sales dealer or service dealer for a repair Refrigerant gas leakage may cause fire For safety be sure to turn the air conditioner off and also to disconnect the power before cleaning Pull off the power plug from a receptacle or switch off the breaker or switch off the power disconnecting mean to isolate the air conditioner from the...

Page 122: ...rature The temperature setting changes by 2 F each time one of the TEMP buttons is pressed NIGHT SETBACK button For details see 5 Night Setback Mode When you press this button in the HEAT DRY or COOL mode the mark appears in the display and the remote controller will automatically adjust the set temperature to save energy Timer and Present Time setting buttons First press the SET button to select ...

Page 123: ...FAN The air conditioner works only as a circulation fan except for Multiple use of COOL DRY HEAT Model The indoor fan runs continuously when the system is in normal operation It does not turn off when the desired room temperature is reached If Night Set Back mode is selected the fan will turn off intermittently during cooling operation in order to control air flow NOTE SENSOR button When you press...

Page 124: ... setting 60 86 F When set to 80 F temperature indication 4 Timer 24 hour clock with ON OFF program Timer ON Timer OFF Timer 1 hour OFF Timer 5 NIGHT SETBACK 6 Flap angle indication Sweep indication Displayed when indoor unit sensor is in use Displayed when operating NIGHT SETBACK mode Displayed when setting temperature Displayed when temperature is shown Displayed when setting timer Symbols ...

Page 125: ...hange the settings as desired STEP 1 Press the MODE selector button and select the desired mode For heating operation For dehumidifying operation For cooling operation For fan only operation No Fan mode in Multiple use of COOL DRY HEAT Model o o o o STEP 2 To start the air conditioner press the ON OFF operation button STEP 3 Press the TEMP setting buttons to change the temperature setting to the d...

Page 126: ...perature control follow these steps STEP 1 Press the MODE selector button to switch to the fan mode STEP 2 Press the ON OFF operation button STEP 3 Press the FAN SPEED selector button to select the fan speed of your choice or There is no FAN only function in Multiple use of COOL DRY HEAT Model STEP 2 STEP 1 STEP 3 NOTE When the night setback mode is selected the air conditioner automatically raise...

Page 127: ... the HH button until PM 9 is displayed Press the MM button until 10 is displayed The display will flash for 10 sec and automatically stop flashing except for the symbol Operation Indication 1 Press the SET button twice The timer indication alone flashes and the previous set time is only displayed 2 Press the HH button until PM 11 is displayed Press the MM button until 30 is displayed The display w...

Page 128: ...ING THE AIRFLOW DIRECTION The vertical airflow can be adjusted by moving the flap with the remote controller Do not move the flap with your hands Confirm that the remote controller has been turned on Use the FLAP button to set either the sweep function or one of the six airflow direction settings The flap automatically closes when the unit is off During the heating operation the fan speed will be ...

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Page 130: ...A 4 INSTALLATION INSTRUCTIONS CZ RD515U 852 6 4190 592 00 0 APPENDIX D ...

Page 131: ...ool Dry Heat model at the time of shipment from the factory If the purchased air conditioner is a COOL DRY model follow the instructions on the label and change the switch on the reverse side of the remote controller unit to Cool Dry model Fig 1 The remote controller is also set to Single at the time of shipment from the factory For multiple use set the switch on the reverse side of the remote con...

Page 132: ...5 tab locations and disconnect the back plate of the remote controller by lift ing up slightly Fig 2 b The tabs are thin take care not to chip them 2 Use tapping screws to directly fasten the remote con troller back plate onto the wall Fig 6 3 Insert the connector into the PCB of the remote controller unit and wrap the wire harness around the hook Fig 4 4 Use nippers or a similar tool to cut out t...

Page 133: ...structions supplied with the indoor unit 5 Remove the terminal cover screws then remove the cover At this time take care not to drop the cover Fig 8 6 Pull in the wire harness from the remote controller as shown in Fig 8 b Remove the putty before wiring After wiring make sure to restore the putty 7 Insert the wire harness 4P terminal into the control box PCB connector RC Fig 8 a 8 Install the term...

Page 134: ...ler Fig 9 This starts the fan producing uncooled forced air with the 3 indicator lamps OPERATION lamp TIMER lamp and HIGH POWER lamp on the main unit blinking Fig 11 After 3 minutes the system shifts into cooling operation and cool air will start to be felt Cooling mode test run is unaffected by the room tempera ture 3 Press the ON OFF operation button of the remote controller again to stop the te...

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