TECHNICAL DATA & SERVICE MANUAL FILE NO. KS2462R / C2462R, CL2462R SPLIT SYSTEM AIR CONDITIONER INDOOR MODEL No. KS2462R PRODUCT CODE No. 854 019 00 OUTDOOR MODEL No. 854 019 01 CL2462R 854 019 02 Indoor Unit Outdoor Unit KS2462R 854648419200 PRODUCT CODE No. C2462R C2462R CL2462R SM830092 REFERENCE NO.
Important Please Read Before Starting When Installing …………………………………………………………………… This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. …In a Room Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and floors.
Table of Contents 1. OPERATING RANGE ....................................................................................... 4 2. SPECIFICATIONS ............................................................................................ 5 (1) Unit Specifications ...................................................................................... 5 (2) Major Component Specifications ................................................................ 7 (A) Indoor Unit ......................................
1. OPERATING RANGE KS2462R / C2462R Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum Minimum 95 °F DB / 71 °F WB 67 °F DB / 57 °F WB 115 °F DB 67 °F DB KS2462R / CL2462R Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.
2. SPECIFICATIONS 1-1 Unit Specifications MODEL No. POWER SOURCE PERFORMANCE Capacity Indoor Unit Outdoor Unit BTU / h kW Cu.ft. / min. Pints / h Air circulation (Hi) Moisture removal (High) ELECTRICAL RATINGS Voltage rating VAC Available voltage range VAC Running amperes* A Max. running amperes** A Power input W Power factor % S.E.E.R BTU / Wh Max.
2. SPECIFICATIONS 1-1 Unit Specifications MODEL No. POWER SOURCE PERFORMANCE Capacity Indoor Unit Outdoor Unit BTU / h kW Cu.ft. / min. Pints / h Air circulation (Hi) Moisture removal (High) ELECTRICAL RATINGS Voltage rating VAC Available voltage range VAC Running amperes* A Max. running amperes** A Power input W Power factor % S.E.E.R BTU / Wh Max.
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 length in. (mm) 1 ... O.D. 4 (100), L33-3/8 (847) Fan motor Model KFG4X - 31B6P-S Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m.
2. SPECIFICATIONS (2) Major Component Specifications (B) Outdoor Unit MODEL No. C2462R Source 230 - 208 V / 1 phase / 60 Hz Compressor Scroll (Hermetic) Model ZP23K3E Source 230 - 208 V / 1 phase / 60 Hz Nominal output W 2,400 Compressor oil cc 1,120 Coil resistance (Ambient temperature 77 °F) Ω C - R : 2.28 , C - S : 1.
2. SPECIFICATIONS (2) Major Component Specifications (B) Outdoor Unit MODEL No. CL2462R Source 230 - 208 V / 1 phase / 60 Hz Controller P.C.B. Ass'y CR - CL2432 (Microprocessor) Control circuit fuse 250 V, 3 A Compressor Scroll (Hermetic) Model ZP23K3E Source 230 - 208 V / 1 phase / 60 Hz Nominal output W 2,400 Compressor oil cc 1,120 Coil resistance (Ambient temperature 77 °F) Ω C – R : 0.885 , C – S : 1.
2. SPECIFICATIONS (3) Other Component Specifications (A) Indoor Unit MODEL No. KS2462R Power Transformer Rated ATR – T5 Primary AC 230 V, 60 Hz Secondary AC19 V, 0.5 A Capacity Coil resistance (Ambient temprature 77 °F) 9.5 VA Primary (WHT - WHT) : 457.5 Secondary (BRN - BRN) : 3.9 Ω 277 °F Thermistor cut off temperature Thermistor (Coil sensor) Coil resistance DTN - TKS131B 32 °F : 15.0 ± 2 % kΩ Thermistor (Room sensor) Coil resistance DTN - TKS128B 77 °F : 5.
2. SPECIFICATIONS (3) Other Component Specifications (A) Outdoor Unit MODEL No. C2462R Compressor Motor Magnetic Contactor FC - 1SUL Coil rated Coil resistance (at 68 °F) AC 240 V, 60 Hz Ω 587 ± 5 % Contact rated (Main) AC 240 V, 26 A Contact rated (Auxiliary) AC 240 V, 3 A Power Relay HH62S Coil rated Coil resistance (at 68 °F) AC 240 V, 60 Hz kΩ 17.
2. SPECIFICATIONS (3) Other Component Specifications (B) Outdoor Unit MODEL No. CL2462R Compressor Motor Magnetic Contactor FC - 1SUL Coil rated Coil resistance (at 77 °F) AC 240 V, 60 Hz Ω 587 ± 5 % Contact rated (Main) AC 240 V, 26 A Contact rated (Auxiliary) AC 240 V, 3 A Power Relay HH62S Coil rated Coil resistance (at 77 °F) AC 240 V, 60 Hz kΩ 17.2 Contact rated AC 220 V, 5 A Power Transformer ATR - I35B Rated Primary AC 220 V, 60 Hz Secondary 14 V, 0.2 A Capacity 2.
3. DIMENSIONAL DATA (1) Indoor Unit: KS2462R 13 44-7/8 8-31/32 1-7/8 1-7/8 6-7/32 Remote control unit 6-27/32 5-5/16 Center of tubing hole (2 places) 2-13/32 25/32 Wide tube 3/4"(ø19.05) Narrow tube 3/8"(ø9.52) Drain hose O.D.
3. DIMENSIONAL DATA Outdoor Unit: C2462R, CL2462R 4-3/8 25-31/32 1/2 3/4 13-3/8 14-31/32 1/2 1/2 1/2 15-15/16 6-23/32 25/32 (2) 5 18-1/16 16-7/8 36-5/8 37 5 4 4 Dimension : inch Hole for anchor bolt (4-R1/4) Refrigerant tube joint (narrow tube) Flare connection 3/8 in (9.52 mm) Refrigerant tube joint (wide tube) Flare connection 3/4 in (19.
4. COOLING CAPACITY 1 Indoor Unit: KS2462R Outdoor Unit: C2462R • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT. TEMP. °F (°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
4. COOLING CAPACITY 1 Indoor Unit: KS2462R Outdoor Unit: C2462R • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT. TEMP. °F (°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
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) 230V Outdoor fan speed Low High 14 Indoor temp. °F (°C) Operating current (A) 13 12 85 (30) 80 (27) 75 (24) 70 (21) 11 10 9 8 7 59 (15) 68 (20) 77 (25) 86 (30) 95 (35) 104 (40) Outdoor ambient temp.
5. PERFORMANCE CHARTS (1) Operating Current 2 Indoor Unit: KS2462R Outdoor Unit: CL2462R Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V Low Outdoor fan speed Med High 14 Indoor temp. °F (°C) Operating current (A) 13 12 85 (30) 80 (27) 75 (24) 70 (21) 11 10 9 8 7 23 (–5) 32 (0) 41 (5) 50 (10) 59 (15) 68 (20) 77 (25) 86 (30) 95 (35) 104 (40) Outdoor ambient temp.
5. PERFORMANCE CHARTS (2) High and Low Pressure 1 Indoor Unit: KS2462R Outdoor Unit: C2462R • High Pressure High pressure characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V / 208 V Outdoor fan speed Low High 480 Indoor temp. °F (°C) Discharge pressure (psig) 460 440 85 (30) 80 (27) 75 (24) 70 (21) 420 400 380 360 340 320 300 59 (15) 68 (20) 77 (25) 86 (30) 95 (35) 104 (40) Outdoor ambient temp.
5. PERFORMANCE CHARTS (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) 230 / 208V Low Outdoor fan speed Med High 500 Indoor temp.
6. AIR THROW DISTANCE CHART Indoor Unit: KS2462R Room air temp. : Fan speed : 80°F (26.7°C) High Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.
7. REFRIGERANT FLOW DIAGRAM Indoor Unit: KS2462R Outdoor Unit: C2462R Outdoor Unit Wide tube O. D. 3/4" (19.05mm) Wide tube service valve O. D. 3/4" (19.05mm) LP Accumulator Narrow tube service valve Capillary tube Strainer Narrow tube O. D. 3/8" (9.52 mm) HP Condenser Evaporator High pressure switch Compressor Indoor Unit Sub-condenser O. D. 3/8" (9.52 mm) 2201_M_S Indoor Unit: KS2462R Outdoor Unit: CL2462R Outdoor Unit Wide tube O. D. 3/4" (19.05mm) Wide tube service valve O. D.
8. INSTALLATION INSTRUCTIONS 1) Tubing Length • Refrigerant tubing between the indoor and outdoor units should be kept as short as possible. • Select and decide the installation location so that the length of the refrigerant tubing will be within the limits given in Table 1. Tubing length (L) INDOOR UNIT Elevation difference (H) OUTDOOR UNIT 0711_M_I Fig. 1 Table 3 Model Max. Allowable Tubing Length at Shipment (ft.) Limit of Tubing Length (L) (ft.) Limit of Elevation Difference (H) (ft.
8. INSTALLATION INSTRUCTIONS 2) Selecting the Installation Site Indoor Unit AVOID: areas where leakage of flammable gas may be expected. places where large amounts of oil mist exist. (Fig. 2) direct sunlight. locations near heat sources which may affect performance of the unit. locations where external air may enter the room directly. This may cause “sweating” on the air discharge ports, causing them to spray or drip. (Fig.
8. INSTALLATION INSTRUCTIONS Outdoor Unit Exhaust fan Hot air AVOID: Heat source Outdoor unit heat sources, exhaust fans, etc. Fig. 4 damp, humid or uneven locations. DO: 0591_C_I choose a place as cool as possible. choose a place that is well ventilated and outside air temperature does not exceed maximum 115 °F constantly. allow enough room around unit for air intake/ exhaust and possible maintenance. Fig.
8. INSTALLATION INSTRUCTIONS Wind Shield for "CL" Model Wind shield (air discharge side) IMPORTANT It is recommended to use wind shields for "CL" model (Fig. 5b). "CL" model is designed to use in low outdoor temperature conditions. Front General When the outdoor unit is installed in a position exposed to strong wind (like seasonal winds with low air temperature in winter), a suitable wind shield must be installed on the outdoor unit. Fig.
8. INSTALLATION INSTRUCTIONS 3) Electrical Wiring General Precautions on Wiring (1) Before wiring, confirm the rated voltage of (7) Regulations on wire diameters differ from the unit as shown on its nameplate, then locality to locality. For field wiring rules, carry out the wiring closely following the please refer to your LOCAL ELECTRICAL wiring diagram. CODES before beginning. You must ensure that installation complies with all (2) Provide a power outlet to be used relevant rules and regulations.
8. INSTALLATION INSTRUCTIONS 7-2. Recommended Wire Length and Wire Diameter for Power Supply System (A)*1 Power Supply Models C2462R, CL2462R AGW #14 Time Delay Fuse or Circuit Capacity 132 ft. 35 A (B)*1 Inter-unit Wiring 64 ft. (AWG #12) *1 Refer to the Wiring System Diagrams (See below diagram) for the meaning of “A” and “B.
9. ELECTRICAL DATA Electrical characteristics Indoor model: KS2462R / Outdoor model: C2462R, CL2462R Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 - 208 V / 1 phase / 60 Hz 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 A 0.38 - 0.37 0.90 - 0.90 11.1 - 12.4 12.4 - 13.7 kW 0.08 - 0.07 0.18 - 0.17 2.55 - 2.58 2.81 - 2.
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L2 L1 4 G EARTH TERMINAL G L2 L1 BRN RED RED WHT WHT RED WHT C B 52C A U R R V S S RC1 32 W 14 2P (WHT) WHT 31 T 13 GRN/YEL CM RED 1 2 P 1 2 S CH 63PH 2P 1 2 P (WHT) 1 2 S EARTH TERMINAL 8 63PL 5 ORG 1 3 2 2P 1 2 P (GRN) 1 2 S RED 7 1Y 6 4 GRN/YEL ORG GRY ORG RED RC2 9P(WHT) FMO COM H M L 1 3 5 7 9 FMO 49FO HGBV AC230V AC208V AC14V 854-2-5269-159-00-0 TH 2P (WHT) TEMP 1 2 2P (WHT) SEC 1 2 3P(WHT) PRY 1 3 3P(YEL) HGBV 1 3 TR CONTROLLER (CR-CL2432)
10.
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 temperature changes and the thermostat activates the compressor to start (thermo ON) or stop (thermo OFF). Fig. 1 shows about the cooling cycle. Signal from remote control unit 3 minutes 3 minutes 3 minutes Thermo.
11. PROCESSES AND FUNCTIONS (2) Dry Operation (Dehumidification) Dry operation uses the ability of the cooling cycle to remove moisture from the air, but by running at low level to dehumidify without greatly reducing the room temperature. The air conditioner repeats the cycle of turning ON and OFF automatically as shown in the chart below according to the room temperature. Room temp. Cooling operation T + 4 °F Dry A zone Compressor : Set temp.
11. PROCESSES AND FUNCTIONS (3) Freeze Prevention Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the efficiency of the unit, and frost buildup on the coil blocks cool air circulation from the indoor unit’s fan. Thermo. OFF Thermo. ON Room temp. T + 4 °F Set temp. T °F Indoor heat exch. coil temp. More than 6 minutes 6 minutes 30 °F More than 10 minutes Compressor Indoor fan ON More than 10 minutes OFF ON ON Set speed OFF ON Set speed 2214_M_S Fig.
11. PROCESSES AND FUNCTIONS (4) Outdoor Fan Speed Control (1) C2462R Type • In low outdoor temperature, the outdoor fan is set automatically from HIGH to LOW to prevent the indoor heat exchanger from freezing. • When the outdoor temperature falls below 78 °F, the outdoor fan is set from HIGH to LOW automatically. When the outdoor temperature rises to 82 °F, the outdoor fan is set from LOW to HIGH automatically.
12. SERVICE PROCEDURES (1) Troubleshooting 1) Check before and after Troubleshooting Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first. 1 Check power supply wiring (a) Single-phase Check that power supply wires are correctly connected to L1 and L2 on the 6P terminal in the outdoor unit.
12. SERVICE PROCEDURES 2) Air Conditioner does not Operate 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 MΩ or less, it is a defect of insulation. (Example) 3 Ground + + 4 + Power supply cords 2 + + Circuit breaker Outdoor unit 1 L1 2 L2 G G 4 + 1 + + 1 Indoor unit 1 2 G 4 Inter-unit power line *Set the circuit breaker to OFF.
12. SERVICE PROCEDURES (b) Circuit breaker trips in several minutes after turning the air conditioner on. • There is a possibility of short circuit. • Check capacity of circuit breaker. Replace it with a suitable one. (= larger capacity) NO Is capacity of circuit breaker sufficient ? • Check resistance of outdoor fan motor winding. • Check resistance of compressor motor winding. • Check resistance of flap motor winding. 2218_X_S 2 Neither indoor unit nor outdoor unit runs. A.
12. SERVICE PROCEDURES C. Check “Operation selector” switch in the indoor unit. • Has “Operation selector” switch been set to ON position ? IND. LAMP Ass’y or P.C.B. Ass’y in the indoor unit is defective. YES NO Set “Operation selector” switch to ON. But neither unit runs. Switch Ass’y or P.C.B. Ass’y in the indoor unit is defective. 0617_X_S D. Check compressor motor protectors. (a) High pressure switch (63PH) Disconnect the socket from 2P (WHT) connector. Check the continuity between No.1 and No.
12. SERVICE PROCEDURES F. Check. auxiliary relay. (1Y or 2Y) • Check coil resistance of auxiliary relay. (1Y or 2Y) 0620_X_S G. Check fuse on the P.C.B. Ass’y in the indoor unit. • Check fuse on the P.C.B. Ass'y in the indoor unit for continuity. • Check coil of compressor motor magnetic contactor. (52C) When the fuse blows. OK • P.C.B. Ass'y is defective. • Check resistance of primary and secondary winding of transformer. OK • Check resistance of indoor fan motor winding.
12. SERVICE PROCEDURES 3) Outdoor Unit does not Run. A. Check COOL / FAN selector switch in the remote control unit. • Is MODE selector button set to COOL ? NO Set to COOL. 2220_X_S B. Check set temperature. Try to lower set temperature by Temperature setting button “COOLER”. YES • Set “Operation selector” switch to TEST in the indoor unit. Outdoor unit runs. Is room temperature too low ? NO • Try to run both indoor and outdoor units with another remote control unit.
12. SERVICE PROCEDURES C. Check compressor motor magnetic contactor. • Check coil resistance of compressor motor magnetic contactor. (52C) 1035_X_S D. Check indoor unit P.C.B. • Check P.C.B. Ass’y. • Check voltage between terminals No.2 and No.4 at terminal plate. No voltage appears. P.C.B. Ass’y is defective. 0628_X_S E. Check outdoor unit P.C.B. (CL2462R Type) • Check P.C.B. Ass’y. • Check voltage between terminals L1 and L2 at terminal plate. No voltage appears. P.C.B. Ass’y is defective.
12. SERVICE PROCEDURES 4) Indoor Unit does not Run. (Indoor fan and flap motor do not run.) P.C.B. Ass’y is defective. 0630_X_S 5) Some Part does not Operate. A. Indoor fan does not run. • Check fan rotation. Rotate the fan gently once or twice by hand. Fan cannot be rotated. Check fan casing for foreign matter on the inside. Remove foreign matter or repair. Fan motor burnout or foreign matter in bearing. Repair or replace. • Check resistance of fan motor winding. OK • Check fan motor capacitor.
12. SERVICE PROCEDURES 6) Outdoor Fan does not Run. • Check fan rotation. Rotate the fan gently once or twice by hand. Fan cannot be rotated. • Check fan casing for foreign matter on the inside. Remove foreign matter or repair. • Fan motor burnout or foreign matter in bearing. Repair or replace. • Check resistance of fan motor winding. OK • Check fan motor capacitor • Check continuity between terminals on the compressor motor magnetic contactor.
12. SERVICE PROCEDURES 9) Outdoor Fan does not Run for CL2462R. • Check fuse on PCB Ass’y in outdoor unit for continuity. If fuse blows, • Check resistance of primary winding of transformer. (TR) 1038_X_S 10) Compressor does not Run. • Check compressor motor capacitor (RC1). Wait for 30 minutes until compressor has cooled. OK Compressor runs. Compressor internal thermal protector is operated. • Check PTC. OK • Check resistance of compressor motor winding. • Check power supply voltage.
12. SERVICE PROCEDURES 11) Poor Cooling. Check installation position of remote control unit. • Does cool air from air conditioner reach remote control unit directly ? YES • Is wide tube between indoor unit and outdoor unit insulated ? NO Change installation position of remote control unit. Insulate wide tube and then execute taping with narrow tube. YES Temperature difference Possibility of is small. refrigerant shortage. • Measure temperatures of suction and discharge air of indoor unit.
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 minutes when sensor opens. (b) Short “Freeze Prevention” does not operate when dehumidified water is frozen on the indoor coil. 2 Room temp. Sensor (in the remote control unit) is defective. (a) Open (=No continuity in sensor) Neither outdoor fan nor compressor runs.
12. SERVICE PROCEDURES (3) Earthed wire Checking the Electrical Components 1) Clip Measurement of Insulation Resistance • The electrical insulation is acceptable when the resistance exceeds 2 MΩ. 1 Probe Insulation tester Fig. 16 0638_X_S Power Supply Wires Terminal plate Clamp the earthed wire of the Power Supply wires with a lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires. (Fig.
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 proved normal if there is a continuity between terminals. socket Multimeter Ω Fig. 20 0642_X_S 1 Indoor fan motor thermal protector (49FI) . . . . . .
12. SERVICE PROCEDURES 3) Checking the Electrical Parts *Measure the coil resistance. 1 Power transformer ...........................Indoor unit • Primary 230-208 V ; Measure the resistance between two WHT lead wire terminals of socket connected to power transformer. • Secondary 19 V ; Measure the resistance between two BRN lead wires. 2 Power transformer (TR) ................. Outdoor unit *Measure the coil resistance.
12. SERVICE PROCEDURES 6 Continuity of fuse on P.C.B. Ass’y • Check for continuity using a multimeter as shown in Fig. 22. Fuse NOTE Method Used to Replace Fuse on PCB Ass’y 1042_X_S 1. Remove the PCB Ass’y from the electrical component box. Fig. 22 2. Remove the fuse from PCB Ass’y using pliers while heating the soldered leads on the back side of the PCB Ass’y with a soldering iron (30W or 60W). (Fig. 23) 3. For replacement, insert a fuse of the same rating to the intended position and solder it.
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 adversely affect the earth’s ozone layer. Its refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant, R22. 11-1-2. Components (mixing proportions) HFC32 (50%) / HFC125 (50%) 11-1-3.
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 0.8mm in thickness, since air conditioners with R410A are subject to higher pressure than those using R22 and R407C. Outer diameter: mm (inch) Tubing wall thickness: mm (inch) Narrow tube ø6.35 (1/4") 0.8 (0.
12. SERVICE PROCEDURES 11-3. Tools Specifically for R410A For servicing, use the following tools for R410A Tool Distinction Tool Name Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Refrigerant recovery unit Tools specifically for R410A Vacuum pump with anti-reverse flow ( 1) (Solenoid valve-installed type, which prevents oil from flowing back into the unit when the power is off, is recommended.) Vacuum pump ( 2) … can be used if the following adapter is attached.
SM830092 – 58 –
