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TECHNICAL & SERVICE MANUAL
KS0971 + C0971
FILE NO.
+ CL0971
KS1271 + C1271
+ CL1271
Destination: North America
DC INVERTER SPLIT SYSTEM AIR CONDITIONER
Indoor Model No. Product Code No. Outdoor Model No. Product Code No.
KS0971 1 852 099 81 C0971 1 852 330 23
KS1271 1 852 099 82 C1271 1 852 330 24
CL0971 1 852 330 25
CL1271 1 852 330 26
Indoor Unit Outdoor Unit
KS0971 C0971
KS1271 C1271
CL0971
CL1271
IMPORTANT
These air conditioners employ new
refrigerant R410A.
Pay special attention w
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When Transporting Important! Be careful when picking up and moving the indoor and Please Read Before Starting outdoor units. Get a partner to help, and bend your knees This air conditioning system meets strict safety and operating when lifting to reduce strain on your back. Sharp edges or thin standards. As the installer or service person, it is an aluminum fins on the air conditioner can cut your fingers. important part of your job to install or service the system so it When Installing
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Table of Contents Page 1. OPERATING RANGE ................................................................................................................... 5 2. SPECIFICATIONS 2-1. Unit Specifications ............................................................................................................. 6 2-2. Major Component Specifications ....................................................................................... 10 2-3. Other Component Specifications ...............
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Page 10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of Insulation Resistance ............................................................................... 48 10-2. Checking Continuity of Fuse on PCB Ass'y ......................................................................... 49 11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1. Characteristics of New Refrigerant R410A ......................................................................... 50 11-2. Checklist be
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1. OPERATING RANGE Models : KS0971 + C0971 KS1271 + C1271 Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 95 °F D.B. / 71 °F W.B. 115 °F D.B. Cooling Minimum 67 °F D.B. / 57 °F W.B. 67 °F D.B. Models : KS0971 + CL0971 KS1271 + CL1271 Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 95 °F D.B. / 71 °F W.B. 115 °F D.B. Cooling Minimum 67 °F D.B. / 57 °F W.B. 0 °F D.B. 5
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2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit KS0971 Outdoor Unit C0971 Voltage Rating 115V Single-Phase 60Hz Cooling Total Capacity BTU/h 9,000 ( 3,000 to 9,000 ) kW 2.65 ( 0.9 to 2.65 ) Sensible Capacity 7,650 BTU/h Latent Capacity BTU/h 1,350 3 3 Air Circulation (High) ft /min (m /h) 282 (480) Moisture Removal (High) Pints/h 3.4 Available Voltage Range V 104 to 126 Running Amperes A 7.6 ( 2.5 to 7.6 ) Power Input W 750 ( 250 to 750 ) Power Factor % 86 EER BTU/h/W 12 SEER BTU/Wh 16
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Indoor Unit KS1271 Outdoor Unit C1271 Voltage Rating 115V Single-Phase 60Hz Cooling Total Capacity BTU/h 11,900 ( 3,000 to 11,900 ) kW 3.5 ( 0.9 to 3.5 ) Sensible Capacity 9,100 BTU/h Latent Capacity BTU/h 2,800 3 3 Air Circulation (High) ft /min (m /h) 294 (500) Moisture Removal (High) Pints/h 4.26 Available Voltage Range V 104 to 126 Running Amperes A 10.9 ( 2.5 to 10.9 ) Power Input W 1,090 ( 250 to 1,090 ) Power Factor % 87 EER BTU/h/W 10.9 SEER BTU/Wh 17 Compressor Locked Rotor Amperes A20
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Indoor Unit KS0971 Outdoor Unit CL0971 Voltage Rating 115V Single-Phase 60Hz Cooling Total Capacity BTU/h 9,000 ( 3,000 to 9,000 ) kW 2.65 ( 0.9 to 2.65 ) Sensible Capacity 7,650 BTU/h Latent Capacity BTU/h 1,350 3 3 Air Circulation (High) ft /min (m /h) 282 (480) Moisture Removal (High) Pints/h 3.4 Available Voltage Range V 104 to 126 Running Amperes A 7.6 ( 2.5 to 7.6 ) Power Input W 750 ( 250 to 750 ) Power Factor % 86 EER BTU/h/W 12 SEER BTU/Wh 16 Compressor Locked Rotor Amperes A20 Fuse or
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Indoor Unit KS1271 Outdoor Unit CL1271 Voltage Rating 115V Single-Phase 60Hz Cooling Total Capacity BTU/h 11,900 ( 3,000 to 11,900 ) kW 3.5 ( 0.9 to 3.5 ) Sensible Capacity 9,100 BTU/h Latent Capacity BTU/h 2,800 3 3 Air Circulation (High) ft /min (m /h) 294 (500) Moisture Removal (High) Pints/h 4.26 Available Voltage Range V 104 to 126 Running Amperes A 10.9 ( 2.5 to 10.9 ) Power Input W 1,090 ( 250 to 1,090 ) Power Factor % 87 EER BTU/h/W 10.9 SEER BTU/Wh 17 Compressor Locked Rotor Amperes A2
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2-2. Major Component Specifications 2-2-1. Indoor Unit Indoor Unit KS0971 Control PCB Part No. CB-KS0971 Controls Microprocessor Control Circuit Fuse 250V 3A Remote Control Unit RCS-4VPIS4U Fan Type Cross-Flow Q'ty ... Dia. and Length inch (mm) 1 ... D3-11/16 / L24-31/32 (D94/L634) Fan Motor Type AC Motor Model ... Q'ty IBH-884-076 ... 1 No. of Poles 4 Rough Measure RPM (Cool) 1,200 Nominal Output W 16 Coil Resistance Ohm BRN-WHT : 57.9 (Ambient Temp. 68 °F (20 °C)) RED-WHT : 55.2 Safety Dev
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Indoor Unit KS1271 Control PCB Part No. CB-KS1271 Controls Microprocessor Control Circuit Fuse 250V 3A Remote Control Unit RCS-4VPIS4U Fan Type Cross-Flow Q'ty ... Dia. and Length inch (mm) 1 ... D3-11/16 / L24-31/32 (D94/L634) Fan Motor Type AC Motor Model ... Q'ty IBH-884-076 ... 1 No. of Poles 4 Rough Measure RPM (Cool) 1,250 Nominal Output W 16 Coil Resistance Ohm BRN-WHT : 57.9 (Ambient Temp. 68 °F (20 °C)) RED-WHT : 55.2 Safety Device Type Thermal Fuse Operating Temp. Open °F (°C) 266 (1
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2-2-2. Outdoor Unit Outdoor Unit C0971 Control PCB Part No. CB-C0971 Controls Microprocessor Control Circuit Fuse 125V 25A Compressor Type DC Rotary (Hermetic) Compressor Model / Nominal Output G4C090LU1ER / 900W Compressor Oil ... Amount Pints (cc) FV50S ... 0.68 (320) Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm U - V : 0.81 V - W : 0.81 W - U : 0.81 Safety Device CT (Peak current cut-off control) Yes Compressor Discharge Temp. Control Yes Operation cut-off control in abnormal ambi
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Outdoor Unit C1271 Control PCB Part No. CB-C1271 Controls Microprocessor Control Circuit Fuse 125V 25A Compressor Type DC Rotary (Hermetic) Compressor Model / Nominal Output G4C090LU1ER / 900W Compressor Oil ... Amount Pints (cc) FV50S ... 0.68 (320) Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm U - V : 0.81 V - W : 0.81 W - U : 0.81 Safety Device CT (Peak current cut-off control) Yes Compressor Discharge Temp. Control Yes Operation cut-off control in abnormal ambient Temp. Yes Overl
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Outdoor Unit CL0971 Control PCB Part No. CB-CL0971 Controls Microprocessor Control Circuit Fuse 125V 25A Compressor Type DC Rotary (Hermetic) Compressor Model / Nominal Output G4C090LU1ER / 900W Compressor Oil ... Amount Pints (cc) FV50S ... 0.68 (320) Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm U - V : 0.81 V - W : 0.81 W - U : 0.81 Safety Device CT (Peak current cut-off control) Yes Compressor Discharge Temp. Control Yes Operation cut-off control in abnormal ambient Temp. Yes Ove
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Outdoor Unit CL1271 Control PCB Part No. CB-CL1271 Controls Microprocessor Control Circuit Fuse 125V 25A Compressor Type DC Rotary (Hermetic) Compressor Model / Nominal Output G4C090LU1ER / 900W Compressor Oil ... Amount Pints (cc) FV50S ... 0.68 (320) Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm U - V : 0.81 V - W : 0.81 W - U : 0.81 Safety Device CT (Peak current cut-off control) Yes Compressor Discharge Temp. Control Yes Operation cut-off control in abnormal ambient Temp. Yes Ove
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2-3. Other Component Specifications Indoor Unit KS0971 KS1271 Outdoor Unit C0971 C1271 CL0971 CL1271 Indoor heat exchanger sensor (Model:PTM-D51H-S3 TH1) Indoor air temp sensor Compressor temp sensor (Model:PTM-D51H-S3 TH2) (Model:DTN-TKS274Y TH2) 10 200 9 180 8 160 7 140 6 120 5 100 4 80 3 60 2 40 1 20 0 0 50 59 68 77 86 95 104 32 50 68 86 104 122 140 158 176 194 (10) (15) (20) (25) (30) (35) (40) (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) Temperature °F (°C) Temper
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3. DIMENSIONAL DATA Indoor Unit KS0971 KS1271 Unit: inch(mm) 17
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Outdoor Unit C0971 C1271 CL0971 CL1271 21-3/16 3-19/32 15/32 10-13/16 Wide tube service valve dia.3/8" (9.52) 28-11/32 (720) 2-1/8 Narrow tube service valve dia.1/4" (6.35) 6-3/32 Unit: inch(mm) 18 ID:23/32 2-ID:15/16 3-19/32 5/8 21-9/16 (548) 10-7/16(265) 11-13/32 12-7/16 4-9/32 2-5/32
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4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram Indoor Unit KS0971 Outdoor Unit C0971 C1271 KS1271 CL0971 CL1271 Indoor unit Outdoor unit Wide tube service Wide tube valve Accumulator Muffler O.D. High pressure 3/8" switch (9.52 mm) H.P. Electric Narrow expansion tube valve service Narrow tube M valve Muffler O.D. *1 1/4" Cooling cycle (6.35 mm) *1: 0nly for C1271/CL1271 Insulation of Refrigerant Tubing IMPORTANT Because capillary tubing is used in the outdoor unit, both the
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5. PERFORMANCE DATA 5-1. Temperature Charts Indoor Unit KS0971 Outdoor Unit C0971 Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V) (1) Low pressure performance chart 173 (1.2) Lo fan Hi Fan 159 (1.1) 145 (1.0) 131 (0.9) 117 (0.8) 68 77 86 95 104 (20) (25) (30) (35) (40) Outdoor inlet air D.B. temp.°F(°C) (2) Operating current performance chart 9 Lo fan Hi Fan 8 7 6 5 4 68 77 86 95 104 (20) (25) (30) (35) (40) Outdoor inlet air D.B. temp.°F(°C) (3) Indoor dischar
