Page 2 - Important; CAUTION; Please Read Before Starting
– 2 – SM830092 Important CAUTION When Installing …………………………………………………………………… …In a RoomProperly insulate any tubing run inside a room to prevent“sweating” that can cause dripping and water damage to wallsand floors. …In Moist or Uneven LocationsUse a raised concrete pad or concrete blocks to provide ...
Page 3 - Table of Contents
– 3 – SM830092 Table of Contents 1. OPERATING RANGE ....................................................................................... 4 2. SPECIFICATIONS ............................................................................................ 5 (1) Unit Specifications ........................
Page 5 - -1 Unit Specifications
– 5 – SM830092 2. SPECIFICATIONS MODEL No. Indoor Unit KS2462R Outdoor Unit C2462R POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity kW 7.912 BTU / h BTU / Wh 27,000 Air circulation (Hi) Cu.ft. / min. 559 Moisture removal (High) Pints / h 6.5 7.619 26,000 519 6.4 ELECTRICAL RAT...
Page 7 - DATA SUBJECT TO CHANGE WITHOUT NOTICE
– 7 – SM830092 2. SPECIFICATIONS (2) Major Component Specifications (A) Indoor Unit MODEL No. KS2462R Source 230 - 208 V / 1 phase / 60 Hz Remote controller (Accessory) RCS - 1PS4U - G Controller P. C. B Ass'y CR - KS2462R Control circuit fuse 250 V, 3 A Fan Type Cross-flow Number ... Dia. and lengt...
Page 13 - Remote control unit
– 13 – SM830092 3. DIMENSIONAL DATA (1) Indoor Unit: KS2462R 6-27/32 Center of tubing hole (2 places) Narrow tube 3/8"(ø9.52) Wide tube 3/4"(ø19.05) 8-31/32 Remote control unit 1-7/8 5-5/16 13 44-7/8 1-7/8 Drain hose O.D. 23/32"(ø18) 2-13/32 25/32 6-7/32 Dimension : inch 2199_M_S
Page 17 - PERFORMANCE CHARTS; Operating Current
– 17 – SM830092 5. PERFORMANCE CHARTS (1) Operating Current 1 Indoor Unit: KS2462R Outdoor Unit: C2462R Operating current characteristics versus outdoor ambient temperature and indoor temperature.(Indoor relative humidity: 50%, Indoor fan speed: High) 208V 1061_X_S Oper ating current (A) 85 (30)80 (...
Page 19 - • Low Pressure
– 19 – SM830092 5. PERFORMANCE CHARTS 230V / 208 V • Low Pressure Low pressure characteristics versus outdoor ambient temperature and indoor temperature.(Indoor relative humidity: 50%, Indoor fan speed: High) (2) High and Low Pressure 1 Indoor Unit: KS2462R Outdoor Unit: C2462R • High Pressure High ...
Page 20 - High and Low Pressure
– 20 – SM830092 5. PERFORMANCE CHARTS 230 / 208V (2) High and Low Pressure 2 Indoor Unit: KS2462R Outdoor Unit: CL2462R • High Pressure High pressure characteristics versus outdoor ambient temperature and indoor temperature.(Indoor relative humidity: 50%, Indoor fan speed: High) • Low Pressure Low p...
Page 21 - AIR THROW DISTANCE CHART
– 21 – SM830092 6. AIR THROW DISTANCE CHART Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 80 ° F (26.7 ° C) Fan speed : High 0 5 10 15 5 10 15 20 25 30 : Flap angle 0 ° , : Axis air velocity 0 ° : Flap angle 30 ° , : Axis air velocity 30 ° 2200_M_S I...
Page 22 - REFRIGERANT FLOW DIAGRAM; Indoor Unit
– 22 – SM830092 7. REFRIGERANT FLOW DIAGRAM Indoor Unit: KS2462R Outdoor Unit: CL2462R Indoor Unit: KS2462R Outdoor Unit: C2462R Condenser Compressor Accumulator Sub-condenser HP Highpressureswitch O. D.3/4"(19.05mm) O. D.3/4"(19.05mm) Wide tube Narrow tube O. D.3/8"(9.52 mm) O. D.3/8...
Page 23 - INSTALLATION INSTRUCTIONS; Table 3; Tubing Length; • Refrigerant tubing between the indoor and
– 23 – SM830092 8. INSTALLATION INSTRUCTIONS Table 3 Max. Allowable Tubing Limit of Tubing Limit of Elevation Required Amount of Model Length at Shipment Length (L) Difference (H) Additional Refrigerant (ft.) (ft.) (ft.) (oz./ft.)* C2462R, CL2462R 23 132 50 0.43 * If total tubing length becomes 23 t...
Page 24 - Selecting the Installation Site
– 24 – SM830092 8. INSTALLATION INSTRUCTIONS Minimum height from floor level 5 ft. Indoor Unit Wall Floor level 2205_M_S 2) Selecting the Installation Site AVOID: areas where leakage of flammable gas maybe expected.places where large amounts of oil mistexist. (Fig. 2)direct sunlight.locations near h...
Page 25 - Outdoor Unit; Air discharge chamber for top discharge; Install the air-discharge chamber in the filed when:
– 25 – SM830092 8. INSTALLATION INSTRUCTIONS Outdoor Unit AVOID: heat sources, exhaust fans, etc. Fig. 4damp, humid or uneven locations. DO: choose a place as cool as possible.choose a place that is well ventilated andoutside air temperature does not exceedmaximum 115 ° F constantly. allow enough ro...
Page 26 - General
– 26 – SM830092 8. INSTALLATION INSTRUCTIONS Wind Shield for "CL" Model It is recommended to use wind shields for "CL" model (Fig. 5b). "CL" model is designed to use in low outdoor temperature conditions. General When the outdoor unit is installed in a position exposed to str...
Page 27 - Electrical Wiring; (3) To prevent possible hazards from insulation
– 27 – SM830092 8. INSTALLATION INSTRUCTIONS 3) Electrical Wiring General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, thencarry out the wiring closely following thewiring diagram. (2) Provide a power outlet to be used exclusively for each...
Page 28 - Models; Wiring; Indoor Unit; N O T E
– 28 – SM830092 8. INSTALLATION INSTRUCTIONS 7-2. Recommended Wire Length and Wire Diameter for Power Supply System 7-3. Wiring System Diagram Models Time DelayFuse orCircuitCapacity (B) *1 Inter-unit Wiring (A) *1 Power Supply AGW #14 C2462R, CL2462R 64 ft. (AWG #12) 35 A 132 ft. *1 Refer to the Wi...
Page 29 - Electrical characteristics
– 29 – SM830092 9. ELECTRICAL DATA Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 - 208 V / 1 phase / 60 Hz Rating conditions A 0.38 - 0.37 0.90 - 0.90 8.8 - 9.6 10.1 - 10.9 kW 0.08 - 0.07 0.18 - 0.17 2.02 - 2.00 2.25 - 2.24 Full load conditions A 0.38 - 0.3...
Page 30 - ELECTRICAL WIRING DIAGRAMS; FLP; CONTROLLER; • Electric Wiring Diagram
– 30 – SM830092 10. ELECTRICAL WIRING DIAGRAMS (1) Indoor Unit 1 KS2462R 8 7 6 5 4 3 2 18 7 6 5 4 3 2 1 12345 12345 12345 12345 FLP CONNECTOR FLAP25P [BLK] FLAP15P [WHT] LAMP 4P [WHT] RECEIVER 3P [WHT] SEC2P [WHT] PRY3P [RED] SUP5P [WHT] ROOM/COIL4P [WHT] [WHT] [GRN] [BLK] WHT BLUBLUBLUBLU 12 12 13 ...
Page 31 - CM
– 31 – SM830092 10. ELECTRICAL WIRING DIAGRAMS CM RC1 2P (GRN) 8P (WHT) 2P (WHT) 63PL 31 32 13 14 T W S V R U A B P S EARTH TERMINAL C R S GRN/YEL 52C 5 7 8 1 3 1 2 1 2 6 2 4 2Y 49FO EARTH TERMINAL POWER SUPPLY 60Hz 1ø 208V/230V TO INDOOR UNIT TERMINAL PLATE (6P) 1 2 G 4 L1 L2 RED 63PH P S 1 2 1 2 W...
Page 32 - • Schematic Diagram; Symbols
– 32 – SM830092 10. ELECTRICAL WIRING DIAGRAMS 2Y 52C 1 2 2Y TERMINALPLATE (6P) 2Y RC2 63PH C L H C R S RC1 52C – 1 – 2 1Y 1Y H M FMO CM 6 5 1 2 49FO 52C 23S • Schematic Diagram Symbols Description CM FMO 49FO 52C 63PH 23S RC1, 2 1Y, 2Y Compressor Motor Outdoor Fan Motor Outdoor Fan Motor Thermal Pr...
Page 35 - PROCESSES AND FUNCTIONS; Chart Summary and Explanations; Once the compressor starts, it keeps running for 5 minutes.; ON; Compressor; OFF
– 35 – SM830092 11. PROCESSES AND FUNCTIONS (1) Room Temperature Control The Unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF.This process is controlled by the thermostat located in the indoor unit.The figures shows how each part of the system performs when the room ...
Page 36 - Cooling operation; Continuous operation; Dry B zone; NOTE
– 36 – SM830092 11. PROCESSES AND FUNCTIONS (2) Dry Operation (Dehumidification) Dry operation uses the ability of the cooling cycle to remove moisture from the air, but byrunning at low level to dehumidify without greatly reducing the room temperature. The airconditioner repeats the cycle of turnin...
Page 37 - F, the control circuit stops the compressor for at
– 37 – SM830092 (3) Freeze Prevention Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces theefficiency of the unit, and frost buildup on the coil blocks cool air circulation from the indoorunit’s fan. 11. PROCESSES AND FUNCTIONS ON ON ON ON OFF OFF Set speed More t...
Page 39 - Check that voltage is within the specified range (; Check the lead wires and connectors in indoor and outdoor units.; Single-phase outdoor unit; SERVICE PROCEDURES
– 39 – SM830092 (1) Troubleshooting 1) Check before and after Troubleshooting Many problems may happen because of wiring or power supply problems, so youshould check these areas first. Problems here can cause false results in some of theother tests, and so should be corrected first. 1 Check power su...
Page 40 - ) Air Conditioner does not Operate; If resistance value is 2 M
– 40 – SM830092 2) Air Conditioner does not Operate 1 Circuit breaker trips (or fuse blows). (a) When the circuit breaker is set to ON, it is tripped soon. • There is a possibility of ground fault.• Check insulation resistance. If resistance value is 2 M Ω or less, it is a defect of insulation. 1 2 ...
Page 41 - • There is a possibility of short circuit.; Neither indoor unit nor outdoor unit runs.; A. Power is not supplied; OK
– 41 – SM830092 12. SERVICE PROCEDURES (b) Circuit breaker trips in several minutes after turning the air conditioner on. • There is a possibility of short circuit. 2 Neither indoor unit nor outdoor unit runs. A. Power is not supplied 0616_X_S • Try to run both indoor and outdoor units with another ...
Page 42 - C. Check “Operation selector” switch in the indoor unit.; Transformer in indoor unit.; YES
– 42 – SM830092 12. SERVICE PROCEDURES C. Check “Operation selector” switch in the indoor unit. D. Check compressor motor protectors. (a) High pressure switch (63PH) 0618_X_S • Check high pressure switch. Does high pressure switch actuate ? (63PH) YES YES Clean heat exchanger coilor remove obstacles...
Page 44 - A. Check COOL / FAN selector switch in the remote control unit.
– 44 – SM830092 12. SERVICE PROCEDURES 3) Outdoor Unit does not Run. A. Check COOL / FAN selector switch in the remote control unit. B. Check set temperature. 2220_X_S • Is MODE selector button set to COOL ? NO Set to COOL. 2221_X_S Try to lower settemperature by Temperaturesetting button “COOLER”. ...
Page 45 - C. Check compressor motor magnetic contactor.
– 45 – SM830092 12. SERVICE PROCEDURES C. Check compressor motor magnetic contactor. D. Check indoor unit P.C.B. 0628_X_S • Check voltage between terminals No.2 and No.4 at terminal plate. • Check P.C.B. Ass’y. No voltage appears. P.C.B. Ass’y is defective. E. Check outdoor unit P.C.B. (CL2462R Type...
Page 46 - • Check fan motor capacitor.
– 46 – SM830092 12. SERVICE PROCEDURES 5) Some Part does not Operate. A. Indoor fan does not run. 4) Indoor Unit does not Run. (Indoor fan and flap motor do not run.) B. Flap motor does not run. • Check resistance of fan motor winding. • Check fan motor capacitor. OK Relay RY1 or RY2 on the P.C.B. A...
Page 47 - Temperature Falls below 78; • Check fan motor capacitor; Temperature Falls below 77
– 47 – SM830092 12. SERVICE PROCEDURES 7) Outdoor Fan Speed is not Switched from High to Low even when the Outdoor Temperature Falls below 78 ° F. (C2462R Type) 6) Outdoor Fan does not Run. • Check resistance of fan motor winding. • Check fan motor capacitor OK • Check continuity between terminals o...
Page 50 - A Sensor is Defective.; Neither outdoor fan nor compressor runs.
– 50 – SM830092 12. SERVICE PROCEDURES (2) A Sensor is Defective. 1 Indoor (heat exchanger) coil temp. Sensor is defective. (a) Open (=No continuity in sensor) Compressor and outdoor fan repeat ON for 10 minutes and OFF for 6 minuteswhen sensor opens. (b) Short “Freeze Prevention” does not operate w...
Page 51 - Checking the Electrical Components
– 51 – SM830092 12. SERVICE PROCEDURES (3) Checking the Electrical Components 1) Measurement of InsulationResistance • The electrical insulation is acceptable when the resistance exceeds 2 M Ω . 1 Power Supply Wires Clamp the earthed wire of the PowerSupply wires with a lead clip of theinsulation re...
Page 52 - Checking the Protective Devices; • Disconnect the connector which leads to the indoor fan motor (FMI).
– 52 – SM830092 12. SERVICE PROCEDURES 2) Checking the Protective Devices • Disconnect the connector, which consists of P (plug) and S (socket) when you want to check the protective device. • Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 20. • The Protective Device is prov...
Page 53 - Checking the Electrical Parts
– 53 – SM830092 Fan motorcapacitor Compressor motorcapacitor 1041_X_S Multimeter Ω Fig. 21 3) Checking the Electrical Parts 1 Power transformer ...........................Indoor unit *Measure the coil resistance. • Primary 230-208 V ; Measure the resistance between two WHT lead wire terminals of soc...
Page 54 - • Check for continuity using a multim-
– 54 – SM830092 12. SERVICE PROCEDURES 6 Continuity of fuse on P.C.B.Ass’y • Check for continuity using a multim- eter as shown in Fig. 22. Method Used to Replace Fuse onPCB Ass’y 1. Remove the PCB Ass’y from the electrical component box. 2. Remove the fuse from PCB Ass’y using pliers while heating ...
Page 55 - REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN INSTALLING UNIT; 1-1. Characteristics of New Refrigerant R410A; Less toxic, more chemically stable refrigerant; Size of flare; A Specification; refrigerant R22, the flare nuts that came with the unit must be used.
– 55 – SM830092 12. SERVICE PROCEDURES 11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN INSTALLING UNIT 11-1. Characteristics of New Refrigerant R410A 11-1-1. What is New Refrigerant R410A? R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture which do not ad...
Page 56 - Tubing precautions; No additional charge of compressor oil is required.; No use of refrigerant other than R410A; Never use a refrigerant other than R410A.; If refrigerant R410A is exposed to fire; sure to provide ample ventilation during installation work.; Caution in case of R410A leak; immediately provide thorough ventilation.; Narrow tube
– 56 – SM830092 12. SERVICE PROCEDURES Tubing precautions Refrigerant R410A is more easily affected by dust or moisture compared to R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation. Never use 0.7mm-thick copper tubing or tubing which is less than ...
Page 57 - For servicing, use the following tools for R410A; Doing so will cause malfunction of the unit.
– 57 – SM830092 12. SERVICE PROCEDURES 11-3. Tools Specifically for R410A For servicing, use the following tools for R410A To prevent other refrigerants (R22, R407C) from being mistakenly charged to this unit, sizes of the service ports and flare nuts of the narrow tube service valve and wide tube s...
