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...
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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......
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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...
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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
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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
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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
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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
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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...
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• 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...
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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...