Panasonic Cs Ksxxnb4x Cz 18bt1u Technical Service Manual
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Outdoor UnitCU-KS18NKUA Control PCB Control Circuit Fuse ControlsPart No. Microprocessor 250V 25A CB-CU-KS18NKUA DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.5 77.5 77.5 Micro F VAC External FinishAcrylic baked-on enamel finishFV50S ... 0.74 (350) - - Internal Controller Yes Aluminum Plate Fin / Copper Tube 2 21.2 Face Area ft 2 (m2)5.49 (0.510) Coil Rows Fins per inch Heat Exchanger Coil SIC-67FV-F460-1 ... 1 Compressor Oil ... Amount 8 50 820 OhmDC Motor Type Compressor Model / Nominal Output Compressor Coil Resistance (Ambient Temp. 68 °F (20 °C)) OhmDC 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 HeaterYes Yes Yes Overload Relay CS-7L115 Model Operation Temp. Open : 239 °F (115 °C), Close : 203 °F (95 °C) - - - 1 ... D16-17/32 (D420) Fan Propeller Q'ty ... Dia. inch (mm) Type Type Over- Current Protection (Ambient Temp. 68 °F (20 °C)) Fan Motor Nominal Output Coil Resistance Safety DeviceRough Measure RPM (Cool) Run Capacitor Type Model ... Q'ty No. of Poles W 21
2-3. Other Component Specifications Indoor Unit CS-KS12NB41 & CZ-18BT1U CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU CU-KS12NK1A CU-KS18NKUA 0 32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) 40 60 80 100 120 140 160 180 200 20 50 1 0 2 3 4 5 6 7 8 9 10 59 68 77 86 95 104 (10) (15) (20) (25) (30) (35) (40) • Indoor air temp sensor (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:TKS292B) 40 35 30 25 20 15 10 5 0 -4 5 14 23 32 41 50 59 68 ( -20)(-15)(-10) (-5) (0) (5) (10) (15) (20) Resistance (k ohm) Temperature °F (°C) Temperature °F (°C)22
3. DIMENSIONAL DATA Indoor Unit CS-KS12NB41 & CZ-18BT1U CS-KS18NB4UW & CZ-18BT1U 6-5/16 6-11/16 1-3/16 (30) 4-19/32 1-25/32 1-25/32 2-3/32 8-15/32 22-5/8 (575) 11-5/32 (283) 3 65 Less than 31/32 Less than 31/32 3-5/8 22-5/8 (575) 12-7/8 Suspension bolt pitch Suspension bolt pitch21-1/32 (534) 21-1/32 (534) 12-7/16 23-5/8 (600) Ceiling opening dimensions 23-5/8 (600) Ceiling opening dimensions 7 Center of panel 24-19/32 (625) 24-19/32 (625)13-5/32 (334) 14-3/32 (358) 12 2 2 2 7-11/16 4-29/32 A View 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) Refrigerant tubing (gas tube) dia. 1/2" (flared) Drain tube connection port VP20 (outer dia. 1") Power supply port Suspension bolt hole (4 - 1/2" x 1-1/8" hole) Fresh air intake duct connection port (dia. 3-7/8") 1 2 3 4 5 6 7 8 7-23/321-27/32 1-3/322-3/32 2-3/4 1-9/32 5-9/16 25/32 Unit : inch (mm) 23
10-13/16 3-19/32 ID:23/322-ID:15/16 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
Unit : inch (mm) (852-0-0010-13300-0) Narrow tube service valve dia.1/4" (6.35)Wide tube service valve dia.1/2" (12.70) 4-3/8 2-5/326-17/32 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 ID:23/322-ID:15/161-3/8 2-17/32 2-13/32 Outdoor Unit CU-KS18NKU CU-KS18NKUA 25
Wide tube Narrow tube Heat exchanger Indoor unit Strainer O.D. 3/8" (9.52 mm) O.D. 1/4" (6.35 mm) 4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram Indoor Unit CS-KS12NB41 & CZ-18BT1UOutdoor 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
Wide tube Narrow tube Indoor unit O.D. 1/2" (12.7mm) O.D. 1/4" (6.35 mm) Indoor Unit CS-KS18NB4UW & CZ-18BT1UOutdoor 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
Hi Fan Lo Fan Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V) (1) Low pressure performance chart (2) Operating current performance chart (3) Indoor discharge air performance chart Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. NOTE 5. PERFORMANCE DATA 5-1. Temperature Charts Indoor Unit CS-KS12NB41 & CZ-18BT1U Outdoor Unit CU-KS12NK1A Low pressure at 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 1011 12 13 14 1577 (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) 75°F (24°C)Indoor Air Temp.86°F (30°C)80°F (27°C) 75°F (24°C) Hi Fan Lo Fan 32 (0)41 (5)50 (10)59 (15)68 (20)77 (25)86 (30)95 (35)104 (40) 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) 28
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. NOTE Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V) (1) Low pressure performance chart (2) Operating current performance chart (3) Indoor discharge air performance chart Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU or CU-KS18NKUA Hi Fan Lo Fan Low pressure at 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 56 7 8 9 1077 (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) 75°F (24°C)Indoor Air Temp.86°F (30°C)80°F (27°C) 75°F (24°C) Hi Fan Lo Fan 32 (0)41 (5)50 (10)59 (15)68 (20)77 (25)86 (30)95 (35)104 (40) Indoor Air Temp.86°F (30°C) 75°F (24°C) Indoor Air Temp.86°F (30°C) 75°F (24°C) 80°F (27°C)80°F (27°C) 29
5-2. Cooling Capacity Indoor Unit : CS-KS12NB41 & CZ-18BT1U Outdoor Unit : CU-KS12NK1A Power Supply : 115V Single Phase 60Hz < Cooling Capacity > TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB : Outdoor Ambient Temp. 95 °F (35 °C) DB 2. 3. Above data represents the value when the operation frequency of a compressor is fixed.Above data does not take Freeze Prevention Protection during cooling operation into account. For this reason, the value may vary from the actual cooling characteristics. NOTE RATING CAPACITY: 11,900 BTU/h AIR FLOW RATE: 235 CFM INDOOR OUTDOOR ENT. TEMP. oF (oC) AMBIENT TEMP. oF (oC) WB DB 65 75 85 95 105 115 (18.3) (23.9) (29.4) (35.0) (40.6) (46.1) TC 8,350 8,570 8,800 8,930 9,210 7,830 CI 0.790.931.061.161.251.07 72 (22.2) SHC 6,340 6,430 6,570 6,610 6,800 6,060 59 76 (24.4) SHC 7,210 7,300 7,440 7,480 7,660 6,930 (15.0) 80 (26.7) SHC 8,120 8,210 8,350 8,400 8,530 7,830 84 (28.9) SHC 8,350 8,570 8,800 8,930 9,210 7,830 88 (31.1) SHC 8,350 8,570 8,800 8,930 9,210 7,830 TC 12,230 12,030 11,790 11,580 10,580 7,950 CI 0.800.941.081.181.251.07 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 0.820.961.101.201.251.07 72 (22.2) SHC 5,790 5,700 5,610 5,520 4,970 3,870 67 76 (24.4) SHC 6,660 6,570 6,480 6,380 5,880 4,740 (19.4) 80 (26.7) SHC 7,570 7,480 7,390 7,300 6,750 5,650 84 (28.9) SHC 8,440 8,350 8,260 8,170 7,620 6,520 88 (31.1) SHC 9,310 9,220 9,130 9,040 8,490 7,390 TC 12,640 12,490 12,300 12,170 10,770 8,100 CI 0.840.981.131.221.251.07 72 (22.2) SHC 4,460 4,420 4,330 4,280 3,690 2,680 71 76 (24.4) SHC 5,330 5,290 5,200 5,150 4,560 3,550 (21.7) 80 (26.7) SHC 6,250 6,200 6,110 6,060 5,470 4,460 84 (28.9) SHC 7,120 7,070 6,980 6,930 6,340 5,330 88 (31.1) SHC 7,980 7,940 7,850 7,800 7,210 6,200 TC 12,730 12,610 12,450 12,370 10,780 8,120 CI 0.861.011.151.251.251.07 75 76 (24.4) SHC 4,050 4,010 3,960 3,920 3,370 2,450 (23.9) 80 (26.7) SHC 4,970 4,920 4,880 4,830 4,280 3,370 84 (28.9) SHC 5,840 5,790 5,740 5,700 5,150 4,240 88 (31.1) SHC 6,700 6,660 6,610 6,570 6,020 5,100 30