Panasonic CU-S18NKU-1 manual

© Panasonic HA Air-Conditioni ng (M) Sdn. Bhd. 2011. Unauthorized copying and distribu tion is a violation of law. Order No: PHAAM1111084C1 Indoor Unit Outdoor Unit CS-S9NKUW-1 CS-S12NKUW-1 CS-S18NKU-1 CS-S22NKU-1 CU-S9NKU-1 CU-S12NKU-1 CU-S18NKU-1 CU-S22NKU-1 Please file and use this manual together with the service manual for Model No. CU-2S18NB[...]

2 TABLE OF CONTENTS 1. Safety Pr ecautions .............................................3 2. Specification .......................................................5 3. Location of Controls and Components ............9 3.1 Indoor Un it ....................................................9 3.2 Outdoor Unit .............................................[...]

3 1. Safety Precautions • Read the following “SAFETY PRECAUTIONS” carefully before per form any servicing. • Electrical work must be installed or servic ed by a licensed elec trician. Be sure to use the correct rating of the po we r plug a nd main circuit for the model installed. • The caution items stated here must be fo llo wed because [...]

4 WARNING 19. During installation, install the refrigerant piping properly bef ore run t he compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration c ycle and result in ex plosion, injury etc.). 20. During pump down operation, stop the[...]

5 2. S pecification Indoor CS-S9NKUW-1 CS-S12NKUW-1 Model Outdoor CU-S9NKU-1 CU-S12NKU-1 Performance Test Condition ARI ARI Phase, Hz Single, 60 Single, 60 Power Supply V 208 230 208 230 Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. kW 1.20 2.49 3.00 1.20 2.49 3.00 1.20 3.48 3.85 1.20 3.48 3.85 Capacity BTU/h 4100 8500 10200 4100 8500[...]

6 Control Device Capillary Tube Capillary Tube Refrigerant Oil cm 3 RB68A or Freol Alpha68M (320) RB68A or Freol Alpha68M (320) Refrigeration Cycle Refrigerant Type g (oz) R410A, 965 (34.1) R410A, 980 (34.6) Height(I/D / O/D) mm (inch) 290 (11-7/16) / 540 (21-9/32) 290 (11-7/16) / 540 (21-9/32) Width (I/D / O/D) mm (inch) 870 (34-9/32) / 780 (30-23[...]

7 Indoor CS-S18NKU-1 CS-S22NKU-1 Model Outdoor CU-S18NKU-1 CU-S22NKU-1 Performance Test Condition ARI ARI Phase, Hz Single, 60 Single, 60 Power Supply V 208 230 208 230 Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. kW 1.30 5.01 5.80 1.30 5.01 5.80 1.30 6.18 6.85 1.30 6.18 6.85 Capacity BTU/h 4400 17100 19800 4400 17100 19800 4400 2100[...]

8 Control Device Expansion Valve Expansion Valve Refrigerant Oil cm 3 RB68A or Freol Alpha68M (400) RB68A or Freol Alpha68M (400) Refrigeration Cycle Refrigerant Type g (oz) R410A, 1.18k (41.7) R410A, 1.37k (48.4) Height(I/D / O/D) mm (inch) 290 (11-7/16) / 795 (31-5/16) 290 (11-7/16) / 795 (31-5/16) Width (I/D / O/D) mm (inch) 1070 (42-5/32) / 875[...]

9 3. Location of Controls and Components 3.1 Indoor Unit 3.2 Outdoor Unit 3.3 Remote Control[...]

10 4. Dimensions 4.1 Indoor Unit 4.1.1 CS-S9NKUW-1 CS-S12NKUW-1[...]

11 4.1.2 CS-S18NKU-1 CS-S22NKU-1[...]

12 4.2 Outdoor Unit 4.2.1 CU-S9NKU-1 CU-S12NKU-1 4.2.2 CU-S18NKU-1 CU-S22NKU-1[...]

13 5. Refrigeration Cycle Diagram 5.1 CS-S9NKUW-1 CU-S9NKU-1 CS-S12NKUW-1 CU-S12NKU-1[...]

14 5.2 CS-S18NKU-1 CU-S18NKU-1 CS-S22NKU-1 CU-S22NKU-1[...]

15 6. Block Diagram 6.1 CS-S9NKUW-1 CU-S9NKU-1 CS-S12NKUW-1 CU-S12NKU-1[...]

16 6.2 CS-S18NKU-1 CU-S18NKU-1 CS-S22NKU-1 CU-S22NKU-1[...]

17 7. Wiring Connection Diagram 7.1 Indoor Unit 7.1.1 CS-S9NKUW-1 CS-S12NKUW-1[...]

18 7.1.2 CS-S18NKU-1 CS-S22NKU-1[...]

19 7.2 Outdoor Unit 7.2.1 CU-S9NKU-1 CU-S12NKU-1[...]

20 7.2.2 CU-S18NKU-1[...]

21 7.2.3 CU-S22NKU-1[...]

22 8. Electronic Circuit Diagram 8.1 Indoor Unit 8.1.1 CS-S9NKUW-1 CS-S12NKUW-1[...]

23 8.1.2 CS-S18NKU-1 CS-S22NKU-1[...]

24 8.2 Outdoor Unit 8.2.1 CU-S9NKU-1 CU-S12NKU-1[...]

25 8.2.2 CU-S18NKU-1[...]

26 8.2.3 CU-S22NKU-1[...]

27 9. Printed Circuit Board 9.1 Indoor Unit 9.1.1 Main Printed Circuit Board[...]

28 9.1.2 Power Printed Circuit Board 9.1.3 Indicator Prin ted Circuit Board[...]

29 9.2 Outdoor Unit 9.2.1 Main Printed Circuit Board 9.2.1.1 CU-S9NKU- 1 CU-S12NKU-1[...]

30 9.2.1.2 CU-S18NKU-1 CU-S22NKU-1[...]

31 10. Inst allation Instruction 10.1 S9NKUW-1 S12NKUW-1 10.1.1 Select the Best Location 10.1.1.1 Indoor Unit • Do not in stall the unit in excessive oil fume area such as kitchen, workshop and etc. • There sh ould not be any heat source or steam near the unit. • There sh ould not be any ob stacles bl ocking the air circulation. • A place w[...]

32 10.1.3 Indoor Unit 10.1.3.1 How to Fix Installation Plate The mounting wall shall be stron g and solid enough to prevent if from the vibratio n. The centre of installation plate sho uld be at more than c at right and left of the wall. The distance from installation plate edge to ceiling sho uld more than d . From installation plate left edge to [...]

33 10.1.3.3 Indoor Unit Installation 10.1.3.4 For the right rear piping 10.1.3.5 For the right bottom piping 10.1.3.6 For the embedded piping (This can be used for left rear pipi ng and bottom piping also.)[...]

34 10.1.3.7 Connect the Cable to the Indoor Unit 1. The inside and outside con necting cable can be connected without remo ving the front grille. 2. Unscrew the conduit cover and fix the conduit connector to conduit cover with lock nut, then secure it against chassi s. 3. Connecting wire between indoor unit and outdoor unit should be UL listed or C[...]

35 10.1.3.8 Wire Stripping and connecting requirement 10.1.3.9 Cutting and flaring the piping 1 Please cut using pipe cutter and then re move the burrs. 2 Remove the burrs by using reamer . If burrs is not removed, gas l eakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. 3 Please make flare after inserting t[...]

36 10.1.4 Outdoor Unit 10.1.4.1 Install the Outdoor Unit • After selecting the best location, start installa tion to Indoor/Outdo or Unit Installation Diagram. 1 Fix the unit on concrete or rigid frame fi rmly and horizontally by bolt nut (ø13/32”). 2 When installing at roof, please con sider strong wind and earth quake. Please fasten the inst[...]

37 10.1.4.2.4 Gas leak checking Pressure test to system to 400 PSIG with dry nitr ogen, in stages. Thoro ughly leak check the system. If the pressure holds, release the nitrogen and proceed to section 1 0.1.4.3. 10.1.4.3 Evacuation of the equipment When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in t[...]

38 9. Secure the wire onto the control boa rd with the holder (clamper). 10. After completing wiring connections, reattach the control board cover (Metal and Resin) and the top panel to the original position with the screws. 11. For wire stripping and connectio n requirement, refer to instruction g of indoor unit. This equipment must be properly ea[...]

39 10.2 S18NKU-1 S22NKU-1 10.2.1 Select the Best Location 10.2.1.1 Indoor Unit • Do not install the unit in excessive oil fume areas such as kitch ens, worksho ps etc. • There should not be any heat source or steam near the unit. • There should not be any ob stacles blocki ng the air circulation. • A place where air circulation in the room [...]

40 10.2.3 Indoor Unit 10.2.3.1 How to Fix Installation Plate The mounting wall must be strong and solid enough to prevent if from the vibration. The centre of installation plate sho uld be at more than c at right and left of the wall. The distance from installation plate edge to ceiling sho uld more than d . From installation plate left edge to uni[...]

41 10.2.3.3 Indoor Unit Installation 10.2.3.4 For the right rear piping 10.2.3.5 For the right bottom piping 10.2.3.6 For the embedded piping (This can be used for left rear pipi ng and bottom piping also.)[...]

42 10.2.3.7 Connect the Cable to the Indoor Unit 1. The inside and outside con necting cable can be connected without remo ving the front grille. 2. Unscrew the conduit cover and fix the conduit connector to conduit cover with lock nut, then secure it against chassi s. 3. Connecting wire between indoor unit and outdoor unit should be UL listed or C[...]

43 10.2.3.8 Wire Stripping and connecting requirement 10.2.3.9 Cutting and flaring the piping 1 Please cut using pipe cutter and then re move the burrs. 2 Remove the burrs by using reamer . If burrs is not removed, gas l eakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. 3 Please make flare after inserting t[...]

44 10.2.4 Outdoor Unit 10.2.4.1 Install the Outdoor Unit • After selecting the best location, start installa tion to Indoor/Outdo or Unit Installation Diagram. 1 Fix the unit on concrete or rigid frame fi rmly and horizontally by bolt nut (ø13/32”). 2 When installing at roof, please con sider strong wind and earth quake. Please fasten the inst[...]

45 10.2.4.3 Evacuation of the equipment When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedures. 1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-wa y valve. 2. Connect the micron gauge between vacuum pump an d service port[...]

46 9. Secure the wire onto the contro l board with the holder (cla mper). 10. After completing wiring connections, reattach the particular plate an d control board cover (metal and resin ) to the original position with the screws. 11. For wire stripping and connectio n requirement, refer to instruction g of indoor u nit. This equipment must be prop[...]

47 11. Operation Control 11.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operation mode as time passes, automatically adjusts output power fo r maximum comfort always. In order to achieve the suitabl e operation mode, the microcomputer maintains the set temperatur e by measuring the tempera[...]

48 11.2 Indoor Fan Motor Operation 11.2.1 Basic Rotation Speed • Manual Fan Speed o Fan motor’s number of rotation is determ ined according to remote control setting. Remote control ○ ○ ○ ○ ○ Tab Hi Me+ Me Me- Lo • Auto Fan Speed o According to room temperature an d setting temperature, indoor fan speed is det ermined automatically.[...]

49 11.5.1 Vertical Airflow Vane Angle (°) Operation Mode Airflow Direction 1 2 3 4 5 Auto 20 ~ 45 Cooling Manual 20 26 32 37 45 Auto 20 ~ 45 Soft Dry Manual 20 26 32 37 45 • Automatic vertical airflow direction can be set using re mote control; the vane swings up and down withi n the angles as stated above. It does not swing during fan moto r st[...]

50  When quiet operation is stoppe d, operation is sh ifted to normal operation with previous setting .  When fan speed is changed, quiet ope ration is sh ifted to quiet operation of the new fan speed.  When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.  During quiet operation, if ON timer ac [...]

51 11.10 Indication Panel LED POWER TIMER QUIET POWERFUL Color Green Orange Orange Orange Light ON Operation ON Timer Setting ON Quiet Mode ON Powerful Mode ON Light OFF Operation OFF Timer Setting OFF Quiet Mode OFF Powerful Mode OFF Note: • If POWER LED blinks, the possible operation of the uni t is operation mode judg ment, or ON timer samplin[...]

52 12. Protection Control 12.1 Restart Control (Time Delay Safety Control) • The compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at re mote control within this p eriod. • This control is not applicable if the power supply is cut off and on again. • Th[...]

53 12.4.2 S18NK, S22NK • Overheating Prevention Control o When the IPM temperature rises to 212°F, compressor operation w ill stop immediately. o Compressor operation rest arts after 3 minut es the temperatu re decreases to 203°F. • DC Peak Current Control o When electric current to IPM exceeds set value of 29.9A, the compressor will st op op[...]

54 12.9 Outdoor Air Temperature Control • The compressor operating frequency is regulated in a cco rdance to the outdoor air temperature as shown in the diagram below. • This control will begin 1 minute after the compressor start s. • Compressor f requency will adjust based on outdoor air temperature. 12.10 Cooling Overload Control • Pipe t[...]

55 13. Servicing Mode 13.1 Auto Off/On Button Auto OFF/ON Button Pressed Auto OF F/ON Button Pressed 5 sec Auto Operation Test Run Operation (Forced Cooling Operation) Stop 1 AUTO OPERATION MODE The Auto Operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner wi th limite[...]

56 13.2 Remote Control Button 13.2.1 SET Button • To check remote control transmission co de and store the transmission code to EEPROM o Press “Set” button continu ously for 10 seconds by usi ng pointer o Press “Timer Set” button unit a “beep ” sound is heard as confirmati on of transmission code ch ange. 13.2.2 RESET (RC) • To clea[...]

57 14. T roubleshooting Guide 14.1 Refrigeration Cycle System In order to diagnose malfunctions, ensu re the air conditioner is free from electrical problems bef ore inspecting the refrigeration cycle. Such problems include in sufficient insulation, problem with the power source, malfunction of a compressor a nd a fan. The normal outlet air tempera[...]

58 14.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Condition of the air conditioner Low Pressure High Pressure Electric current during oper ation Insufficient refrigerant (gas leakage) Ô Ô Ô Clogged capillary tube or strainer Ô Ô Ô Short circuit in the indoor unit Ô Ô Ô Heat r[...]

59 14.2 Breakdown Self Diagnosis Function 14.2.1 Self Diagnosis Function (Thr ee Digits Alphanumeric Code) • Once error occurred during operation, the uni t will stop its operation, and Timer LED blinks. • Although Timer LED goes off when power supply is turn ed off, if the unit is ope rated under a breakdown condition, the LED will ON again. ?[...]

60 14.3 Error Code Table Diagnosis display Abnormality / Protecti on control Abnormality Judgment Emergency Operation Primary location to v erify H00 No abnormality detected - Normal operation H11 Indoor / Outdoor abnormal communication > 1 min after starting operation Indoor fan operation only • Internal / external cable connection • Indoor[...]

61 14.4 Troubleshooting Flowchart 14.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions • During startup and operation of cooling and heating, t he data received from outdoor unit in ind oor unit signal transmission is checked whether it is no rmal. Malfunction Caused • Faulty indoor unit PCB. • Faulty outdoor uni[...]

62 14.4.2 H12 (Indoor/Outdoor Cap acity Rank Mismatched) Malfunction Decision Conditions • During startup, error code appears wh en different ty pes of indoor and outdoor units are inte rconnected. Malfunction Caused • Wrong models interconnected. • Wrong indoor unit or outdoor unit PCBs mounted. • Indoor unit or outdoor unit PCBs defective[...]

63 14.4.3 H14 (Indoor Intake Air Temp erature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, t he temperatures detected by the indoor intake ai r temperature sensor are used to determine sensor e rrors. Malfunction Caused • Faulty conne ctor conn ection. • Faulty sensor. • Faulty P[...]

64 14.4.4 H15 (Compressor Temper ature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, t he temperatures detected by the outdoor com pressor temperature sensor are used to determine sensor e rrors. Malfunction Caused • Faulty conne ctor conn ection. • Faulty sensor. • Faulty PCB. Tr[...]

65 14.4.5 H16 (Outdoor Current Transformer Open Circuit) Malfunction Decision Conditions • A current transformer (CT) is detected by checking the compressor runnin g frequency ( ≥ rated frequency) and CT detected input current (less than 1.14A) for continuou sly 20 seconds. Malfunction Caused • CT defective • Outdoor PCB defective • Compr[...]

66 14.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions • The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused • Operation stops due to short circuit inside the fan motor winding. ?[...]

67 14.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, t he temperatures detected by the indoor heat exch anger temperature sensor are used to determine sensor e rrors. Malfunction Caused • Faulty conne ctor conn ection. • Faulty sensor. • Faulty PCB.[...]

68 14.4.8 H27 (Outdoor Air Temper ature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, the temperatures detected by the outdoor air tempe rature sensor are used to determine sensor errors. Malfunction Caused • Faulty conne ctor conn ection. • Faulty sensor. • Faulty PCB. Troublesho[...]

69 14.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temp erature sensor are used to determine sensor errors. Malfunction Caused • Faulty conne ctor conn ection. • Faulty sensor. • Faulty PCB. Troublesh[...]

70 14.4.10 H30 (Compressor Discharge Temperature Sensor Abnormalit y ) Malfunction Decision Conditions • During startup and operation of cooling and heating, t he temperatures detected by the outdoo r discharge pipe temperature sensor are used to determine sensor e rrors. Malfunction Caused • Faulty conne ctor conn ection. • Faulty sensor. ?[...]

71 14.4.11 H33 (Unspecified Volt age between Indoor and Outdoor) Malfunction Decision Conditions • The supply power is detected for its requir em ent by the indoor/ outdoor transmission. Malfunction Caused • Wrong models interconnected. • Wrong indoor unit and outdoor unit PCBs used. • Indoor unit or outdoor unit PCB defective. Troubleshoot[...]

72 14.4.12 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions • The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused • Operation stops due to short circuit inside the fan motor winding. • Operation stops due to breaking of wire insi[...]

73 14.4.13 H98 (Indoor High Pressure Protection) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions • During heating operation, the temperature detected by the indoor p ipe temperature sensor is above 140°F. Malfunction Caused • Clogged air filter of the indoor unit • Dust accumulation on [...]

74 14.4.14 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Malfunction Decision Conditions • Freeze prevention control takes place (when indoor pi pe temperature is lower than 35.6°F) Malfunction Caused • Clogged air filter of the indoor unit • Dust accumulation on the indoor unit heat exchanger • Air short circuit • Detec[...]

75 14.4.15 F11 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • When cooling operation, when indoor pipe tempe rature or indoor heat exchanger temperature sensor is above 113°F. Malfunction Caused • Faulty conne ctor conn ection. • Faulty indoor pipe temperature sensor. • Faulty indoor main PCB. Troubleshootin[...]

76 14.4.16 F90 (Power Fact or Correction Protection) Malfunction Decision Conditions • During startup and operation of cooling and heating, when Power Factor Co rrection (P FC) protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level. Malfunction Caused • DC voltage peak due to power supply su rge. • DC voltage [...]

77 14.4.17 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions • During cooling, compressor frequency = Fcmax. • During cooling and heating operation, running current: 0.65A < I < 1.65A. • During cooling, indoor intake - indoor pipe < 39.2 °F. Malfunction Caused • Refrigerant shortage (refrigerant leakage) • Po[...]

78 14.4.18 F93 (Compressor Rotation Failure) Malfunction Decision Conditions A compressor rotation failure is detected by checkin g the compressor running condition throug h the position detection circuit. Malfunction Caused • Compressor terminal disconnect • Outdoor PCB malfunction Troubleshooting[...]

79 14.4.19 F95 (Cooling High Pressure Abnormality) Malfunction Decision Conditions During operation of cooli ng, when outdoor unit heat e xchanger high temperature data (141.8°F) is detected by the outdoor pipe temperature sensor. Malfunction Caused • Outdoor pipe temperature rise due to short circuit of hot discharge air flow. • Outdoor pipe [...]

80 14.4.20 F96 (IPM Overheating) Malfunction Decision Conditions During operating of cooli ng and heating, when IPM temper ature data (212° F) is detected by the IPM temperature sensor . Malfunction Caused • IPM overheats due to short circuit of hot discharge air flow. • IPM overheats due to defective of outdoor fan motor. • IPM overheats du[...]

81 14.4.21 F97 (Compressor Overheating) Malfunction Decision Conditions During operation of cooli ng and heating, when compre ssor tank temperature data (233.6°F) is detected by the compressor tank temperature sen sor. Malfunction Caused • Refrigerant shortage (refrigerant leakage). • 2/3 way valve closed. • Detection error due to faulty com[...]

82 14.4.22 F98 (Input Over Current Detection) Malfunction Decision Conditions During cooling and heating operatio n, when an input over-curr ent (16.8A) is detected by checking the input current value being detected by current tran sforme r (CT) with the compressor running. Malfunction Caused • Over-current due to compressor failure. • Over-cur[...]

83 14.4.23 F99 (Output O ver Current Detection) Malfunction Decision Conditions During operation of cooli ng and heating, when an output over-cur rent (18.5A) is detecte d by checking the current that flows in the inverter DC peak sensing circuitry. Malfunction Caused • DC peak due to compressor failure. • DC peak due to defective power transi [...]

84 WA RN ING 15. Disassembly an d Assembly Instructions High Voltage is generated in the electrical parts area by the capacitor. Ensure that t he capac itor has discharged sufficiently before proceeding with repair work. Failure to heed this cauti on may result in electric shocks. 15.1 Indoor Electronic Controllers, Cro ss Flow Fan and Indoor Fan M[...]

85 15.1.1.2 To remove discharge grille[...]

86 15.1.1.3 To remove control board 15.1.1.4 To remove cross flow fan and indoor fan motor[...]

87[...]

88 16. T echnical Dat a 16.1 Operation Characteristics 16.1.1 CS-S9NKUW-1 CU-S9NKU-1 • Cooling Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Piping length: 24.6ft o Compressor Freq: Fc[...]

89 • Piping Length Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Outdoor temperature: 95°F (DBT) o Compressor Freq: Fc[...]

90 16.1.2 CS-S12NKUW-1 CU-S12NKU-1 • Cooling Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Piping length: 24.6ft o Compressor Freq: Fc[...]

91 • Piping Length Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Outdoor temperature: 95°F (DBT) o Compressor Freq: Fc[...]

92 16.1.3 CS-S18NKU- 1 CU-S18NKU-1 • Cooling Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Piping length: 16.4ft o Compressor Freq: Fc[...]

93 • Piping Length Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Outdoor temperature: 95°F (DBT) o Compressor Freq: Fc[...]

94 16.1.4 CS-S22NKU- 1 CU-S22NKU-1 • Cooling Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Piping length: 16.4ft o Compressor Freq: Fc[...]

95 • Piping Length Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Outdoor temperature: 95°F (DBT) o Compressor Freq: Fc[...]

96 17. Exploded View and Replacement Part s List 17.1 Indoor Unit 17.1.1 CS-S9NKUW-1 CS-S12NKUW-1 Note The above exploded view is for the purp os e of parts disassembly and replaceme nt. The non-numbered pa rts are not kept as standard service parts.[...]

97 REF. NO. P A RT NAME & DESCRIPTI ON QTY. CS-S9NKUW-1 CS-S12NKUW-1 REMARK 1 CHASSIS COMPLETE 1 CWD50C163 3 ← 2 FAN MOTOR 1 L6CBYYYL0055 ← O 3 CROSS-FLOW FAN COMPLETE 1 CWH02C1076 ← 4 BEARING ASSY 1 CWH64K007 ← 5 SCREW - CROSS-FLOW FAN 1 CWH551146 ← 7 EVAPORATOR 1 CWB30C3181 CWB30C3182 8 FLARE NUT (LIQUID) 1 CWT251030 ← 9 FLARE NUT[...]

98 17.1.2 CS-S18NKU-1 CS-S22NKU-1 Note The above exploded view is for the purp os e of parts disassembly and replaceme nt. The non-numbered pa rts are not kept as standard service parts.[...]

99 REF. NO. P A RT NAME & DESCRIPTI ON QTY. CS-S18NKU-1 CS-S22NKU-1 REMARK 1 CHASSIS COMPLETE 1 CWD50C163 7 ← 2 FAN MOTOR 1 L6CBYYYL0056 ← O 3 CROSS-FLOW FAN COMPLETE 1 CWH02C1077 ← 4 BEARING ASSY 1 CWH64K007 ← 5 SCREW - CROSS-FLOW FAN 1 CWH551146 ← 7 EVAPORATOR 1 CWB30C3771 CWB30C3772 8 FLARE NUT (LIQUID) 1 CWT251030 ← 9 FLARE NUT [...]

100 17.2 Outdoor Unit 17.2.1 CU-S9NKU-1 CU-S12NKU-1 Note The above exploded view is for the purp os e of parts disassembly and replaceme nt. The non-numbered pa rts are not kept as standard service parts.[...]

101 REF. NO. PA RT NAME & DESCRIPTION QTY. CU-S9NKU-1 CU-S12N KU-1 REMARK 1 CHASSIS ASSY 1 CWD50K2206A ← 2 FAN MOTOR BRACKET 1 CWD541030 ← 3 SCREW - FAN MOTOR BRACKET 2 CWH551217 ← 4 FAN MOTOR 1 CWA951466 ← O 5 SCREW - FAN MOTOR MOUNT 4 CWH55406J ← 6 PROPELLER FA N ASSY 1 CWH03K1010 ← 7 NUT - PROPELLER FAN 1 CWH56053J ← 8 COMPRESS[...]

102 17.2.2 CU-S18NKU-1 CU-S22NKU-1 Note The above exploded view is for the purp os e of parts disassembly and replaceme nt. The non-numbered pa rts are not kept as standard service parts.[...]

103 REF. NO. PA RT NAME & DESCRIPTION QTY. CU-S18NKU-1 CU-S22NKU-1 REMARK 1 CHASSIS ASSY 1 CWD52K1227A ← 2 ANTI - VIBRATION BUSHING 3 CWH50077 ← 3 COMPRESSOR 1 5CS130XAD04 ← O 4 NUT - COMPRESSOR MOUNT 3 CWH56000J ← 5 FAN MOTOR BRACKET 1 CWD541126 ← 6 FAN MOTOR 1 CWA951686 ← O 7 SCREW - FAN MOTOR BRACKET 2 CWH551217 ← 8 SCREW - FAN[...]