TCL SERVICE MANUAL. Models WALL MOUNTED SPLIT-TYPE AIR CONDITIONERS. No.TE CONTENTS

Transcription

1 TCL WALL MOUNTED SPLIT-TYPE AIR CONDITIONERS SERVICE MANUAL No.TE Models TAC-07CS/K TAC-09CS/K TAC-12CS/K TAC-18CS/K TAC-24CS/K TAC-07CSC/K TAC-09CSC/K TAC-12CSC/K TAC-18CSC/K TAC-24CSC/K TAC-07CHS/K TAC-09CHS/K TAC-12CHS/K TAC-18CHS/K TAC-24CHS/K TAC-07CHSC/K TAC-09CHSC/K TAC-12CHSC/K TAC-18CHSC/K TAC-24CHSC/K CONTENTS 1. IMPORTANT NOTICE 2 2. TECHNICAL SPECIFICATION 3 3. DIMENSIONS 8 4. REFRIGERATING CYCLE SYSTEM 9 5. PERFORMANCE CURVES OPERATION DETAILS WIRING DIAGRAM EXPLOSION VIEW PARTS LIST ANNEX 1 THERMISTOR CHARACTERISTIC 11. ANNEX 2 GENERAL 12. ANNEX 3 TROUBLE SHOOTING 13. ANNEX 4 R407C REFRIGERANT 14. ANNEX 5 INSTALLATION INSTRUCTION Part 1

2 IMPORTANT NOTICE This service manual is intended for use by individuals possessing adequate backgrounds of electrical, electronic and mechanical experience. Any attempt to repair the appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use. The information, specifications and parameter are subject to change due to technical modification or improvement without any prior notice. The accurate specifications are presented on the nameplate label. How to order spare parts To have your order filled promptly and correctly, please furnish the following information: 1. Model No. with Indoor or Outdoor 2. No. in the Explosion View 3. Part Name 4. The quantity you ordered 2

3 Technical Specifications Model No. TAC-07CS/K TAC-07CHS/K TAC-09CS/K TAC-09CHS/K Type Cooling Only Heating Pump Cooling Only Heating Pump Control type Remote Remote Remote Remote Rated cooling capacity Btu/h 7,000 7,000 9,000 9,000 Rated heating capacity Btu/h N/A 7,500 N/A 9,500 EER for cooling Btu/h.w COP for heating W/W N/A 2.8 N/A 2.8 Moisture removal Liters/h High db(a) Indoor noise level at cooling Med. db(a) Low db(a) Outdoor noise level db(a) Electrical Data Power supply V~/50Hz Voltage Range V 198~ ~ ~ ~264 Rated current Cooling A Heating A N/A 4.1 N/A 4.1 Rated input Cooling W Heating W N/A 880 N/A 880 Refrigerating System Refrigerant/Charge Gram R22/700g R22/700g R22/700g R22/700g Type Rotary Rotary Rotary Rotary Compressor Model LRA A MFG Evaporator Louver fin and Grooved tube type ( 7) Condenser Corrugated fin and Grooved tube type ( 9.53) Expansion device Capillary tube Defrosting system Microcomputer controlled reverse system Fan System Indoor air circulation m 3 /h Indoor fan type Cross flow Cross flow Cross flow Cross flow Indoor fan speed H/M/L Cooling rpm 1000/950/ /950/ /950/ /950/900 Heating rpm N/A 970/900/800 N/A 970/900/800 Dry rpm Sleep rpm Indoor fan motor output W Outdoor air circulation m 3 /h Outdoor fan type Propeller fan Propeller fan Propeller fan Propeller fan Outdoor fan speed rpm Outdoor fan motor output W Connections Refrigerant coupling Flare type Connecting Pipe Gas Inches 5/8 5/8 5/8 5/8 Liquid Inches 7/16 7/16 7/16 7/16 Connecting Wiring Size Core number Drainage Pipe O.D 16mm Others Suitable area m 2 12~19 12~19 12~19 12~19 Net dimensions Indoor mm (W x H x D) Outdoor mm Net weight Indoor kg Outdoor kg Packing dimensions Indoor mm (W x H x D) Outdoor mm Gross weight Indoor kg Outdoor kg Loading Capacity 40 /40 HC 132/280/ /280/ /280/ /280/318 3

4 Model No. TAC-07CSC/K TAC-07CHSC/K TAC-09CSC/K TAC-09CHSC/K Type Cooling Only Heating Pump Cooling Only Heating Pump Control type Remote Remote Remote Remote Rated cooling capacity Btu/h 7,000 7,000 9,000 9,000 Rated heating capacity Btu/h N/A 7,500 N/A 9,500 EER for cooling Btu/h.w COP for heating W/W N/A 3.2 N/A 3.2 Moisture removal Liters/h High db(a) Indoor noise level at cooling Med. db(a) Low db(a) Outdoor noise level db(a) Electrical Data Power supply V~/50Hz Voltage Range V 198~ ~ ~ ~264 Rated current Cooling A Heating A N/A 4.1 N/A 4.1 Rated input Cooling W Heating W N/A 880 N/A 880 Refrigerating System Refrigerant/Charge Gram R407C/700g R407C/700g R407C/700g R407C/700g Type Rotary Rotary Rotary Rotary Compressor Model LRA A MFG Evaporator Louver fin and Grooved tube type ( 7) Condenser Corrugated fin and Grooved tube type ( 9.53) Expansion device Capillary tube Defrosting system Microcomputer controlled reverse system Fan System Indoor air circulation m 3 /h Indoor fan type Cross flow Cross flow Cross flow Cross flow Cooling rpm 1230/1150/ /1150/ /1150/ /1150/1000 Indoor fan speed Heating rpm N/A 1230/1150/1000 N/A 1230/1150/1000 H/M/L Dry rpm Sleep rpm Indoor fan motor output W Outdoor air circulation m 3 /h Outdoor fan type Propeller fan Propeller fan Propeller fan Propeller fan Outdoor fan speed rpm Outdoor fan motor output W Connections Refrigerant coupling Flare type Connecting Pipe Gas Inches 7/16 7/16 3/4 3/4 Liquid Inches 3/4 3/4 7/16 7/16 Connecting Wiring Size Core number Drainage Pipe O.D 16mm Others Suitable area m 2 12~19 12~19 12~19 12~19 Net dimensions Indoor mm (W x H x D) Outdoor mm Net weight Indoor kg Outdoor kg Packing dimensions Indoor mm (W x H x D) Outdoor mm Gross weight Indoor kg Outdoor kg Loading Capacity 40 /40 HC 111/238/ /238/ /238/ /238/276 4

5 Model No. TAC-12CS/K TAC-12CHS/K TAC-18CS/K TAC-18CHS/K Type Cooling Only Heating Pump Cooling Only Heating Pump Control type Remote Remote Remote Remote Rated cooling capacity Btu/h 12,000 12,000 18,000 18,000 Rated heating capacity Btu/h N/A 12,800 N/A 19,000 EER for cooling Btu/h.w COP for heating W/W N/A 2.65 N/A 2.65 Moisture removal Liters/h High db(a) Indoor noise level at cooling Med. db(a) Low db(a) Outdoor noise level db(a) Electrical Data Power supply V~/50Hz Voltage Range V 198~ ~ ~ ~264 Rated current Cooling A Heating A N/A 5.9 N/A 9.0 Rated input Cooling W Heating W N/A 1335 N/A 1970 Refrigerating System Refrigerant/Charge Gram R22/870g R22/870g R22/1700g R22/1700g Type Rotary Rotary Rotary Rotary Compressor Model LRA A MFG Evaporator Louver fin and Grooved tube type ( 7) Condenser Corrugated fin and Grooved tube type ( 9.53) Expansion device Capillary tube Defrosting system Microcomputer controlled reverse system Fan System Indoor air circulation m 3 /h / /850 Indoor fan type Cross flow Cross flow Cross flow Cross flow Indoor fan speed H/M/L Cooling rpm 1150/1060/ /1060/ /1200/ /1200/1100 Heating rpm N/A 1150/1060/900 N/A 1300/1200/1100 Dry rpm Sleep rpm / /1000 Indoor fan motor output W Outdoor air circulation m 3 /h Outdoor fan type Propeller fan Propeller fan Propeller fan Propeller fan Outdoor fan speed rpm Outdoor fan motor output W Connections Refrigerant coupling Flare type Connecting Pipe Gas Inches 7/16 7/16 3/4 3/4 Liquid Inches 3/4 3/4 7/16 7/16 Connecting Wiring Size Core number Drainage Pipe O.D 16mm Others Suitable area m 2 16~28 16~28 30~40 30~40 Net dimensions Indoor mm (W x H x D) Outdoor mm Net weight Indoor kg Outdoor kg Packing dimensions Indoor mm (W x H x D) Outdoor mm Gross weight Indoor kg Outdoor kg Loading Capacity 40 /40 HC 111/238/ /238/276 90/188/218 90/188/218 5

6 Model No. TAC-12CSC/K TAC-12CHSC/K TAC-18CSC/K TAC-18CHSC/K Type Cooling Only Heating Pump Cooling Only Heating Pump Control type Remote Remote Remote Remote Rated cooling capacity Btu/h 12,000 12,000 18,000 18,000 Rated heating capacity Btu/h N/A 12,800 N/A 1,9000 EER for cooling Btu/h.w COP for heating W/W N/A 3.2 N/A 2.8 Moisture removal Liters/h High db(a) Indoor noise level at cooling Med. db(a) Low db(a) Outdoor noise level db(a) Electrical Data Power supply V~/50Hz Voltage Range V 198~ ~ ~ ~264 Rated current Cooling A Heating A N/A 5.5 N/A 8.7 Rated input Cooling W Heating W N/A 1170 N/A 1900 Refrigerating System Refrigerant/Charge Gram R407C/1450g R407C/1450g R407C/1800g R407C/1800g Type Rotary Rotary Rotary Rotary Compressor Model LRA A MFG Evaporator Louver fin and Grooved tube type ( 7) Condenser Corrugated fin and Grooved tube type ( 9.53) Expansion device Capillary tube Defrosting system Microcomputer controlled reverse system Fan System Indoor air circulation m 3 /h Indoor fan type Cross flow Cross flow Cross flow Cross flow Cooling rpm 1230/1150/ /1150/ /970/ /970/880 Indoor fan speed Heating rpm N/A 1230/1150/1000 N/A 1060/970/880 H/M/L Dry rpm Sleep rpm Indoor fan motor output W Outdoor air circulation m 3 /h Outdoor fan type Propeller fan Propeller fan Propeller fan Propeller fan Outdoor fan speed rpm Outdoor fan motor output W Connections Refrigerant coupling Flare type Connecting Pipe Gas Inches 3/4 3/4 3/4 3/4 Liquid Inches 7/16 7/16 7/16 7/16 Connecting Wiring Size Core number Drainage Pipe O.D 16mm Others Suitable area m 2 16~28 16~28 30~40 30~40 Net dimensions Indoor mm (W x H x D) Outdoor mm Net weight Indoor kg Outdoor kg Packing dimensions Indoor mm (W x H x D) Outdoor mm Gross weight Indoor kg Outdoor kg Loading Capacity 40 /40 HC 112/236/ /236/248 66/142/162 66/142/162 6

7 Model No. TAC-24CS/K TAC-24CHS/K TAC-24CSC/K TAC-24CHSC/K Type Cooling Only Heating Pump Cooling Only Heating Pump Control type Remote Remote Remote Remote Rated cooling capacity Btu/h 24,000 24,000 24,000 24,000 Rated heating capacity Btu/h N/A 26,000 N/A 26,000 EER for cooling Btu/h.w COP for heating W/W N/A 2.55 N/A 2.8 Moisture removal Liters/h High db(a) Indoor noise level at cooling Med. db(a) Low db(a) Outdoor noise level db(a) Electrical Data Power supply V~/50Hz Voltage Range V 198~ ~ ~ ~264 Rated current Cooling A Heating A N/A 13.8 N/A 11.8 Rated input Cooling W Heating W N/A 2800 N/A 2600 Refrigerating System Refrigerant/Charge Gram R22/2500g R22/2500g R407C/2540g R407C/2540g Type Rotary Rotary Rotary Rotary Compressor Model LRA A MFG Evaporator Louver fin and Grooved tube type ( 7) Condenser Corrugated fin and Grooved tube type ( 9.53) Expansion device Capillary tube Defrosting system Microcomputer controlled reverse system Fan System Indoor air circulation m 3 /h Indoor fan type Cross flow Cross flow Cross flow Cross flow Indoor fan speed H/M/L Cooling rpm 1300/1200/ /1200/ /1250/ /1250/1150 Heating rpm N/A 1300/1200/1100 N/A 1300/1250/1150 Dry rpm Sleep rpm Indoor fan motor output W Outdoor air circulation m 3 /h Outdoor fan type Propeller fan Propeller fan Propeller fan Propeller fan Outdoor fan speed rpm Outdoor fan motor output W Connections Refrigerant coupling Flare type Connecting Pipe Gas Inches 7/8 7/8 7/8 7/8 Liquid Inches 5/8 5/8 5/8 5/8 Connecting Wiring Size Core number Drainage Pipe O.D 16mm Others Suitable area m 2 35~48 35~48 35~48 35~48 Net dimensions Indoor mm (W x H x D) Outdoor mm Net weight Indoor kg Outdoor kg Packing dimensions Indoor mm (W x H x D) Outdoor mm Gross weight Indoor kg Outdoor kg Loading Capacity 40 /40 HC 66/142/162 66/142/162 66/142/162 66/142/162 Note: The technical specifications is only reference. 7

8 Product Dimensions TCL Air Conditioner Service Manual Indoor Unit 54 mm 16mm 124mm A C B Outdoor Unit F G H I E J D K Unit: mm Capacity A B C D E F G H I J K 7K&9K K K K

9 Refrigerating Cycle System Heat Pump TCL Air Conditioner Service Manual INDOOR UNIT Refrigerant pipe (Option) (with heat insulator) Reversing valve (4- way valve) OUTDOOR UNIT Indoor heat exchanger Indoor coil thermistor Distributor Flared connection Outdoor heat exchanger Room temperature thermistor Accumulator Compressor Defrost thermistor Flared connection Check valve Capillary tube Refrigerant pipe (Option) (with heat insulator) Capillary tube Refrigerant flow in cooling or Defrosting Refrigerant flow in heating Cooling Only INDOOR UNIT Refrigerant pipe (Optional) (with heat insulator) OUTDOOR UNIT Indoor heat exchanger Indoor coil thermistor Stop valve (with service port) Outdoor heat exchanger Room temperature thermistor Flared connection Compressor Stop valve Capillary tube Strainer Refrigerant pipe (Option) (with heat insulator) Refrigerant flow in cooling 9

10 MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Models Max. length : m A Piping size O.D : mm Gas Liquid Length of connecting pipe : m Indoor unit Outdoor unit 07K 09K K K 15 24K MAX. HEIGHT DIFFERENCE ADDITIONAL REFRIGERANT CHARGE(R-22 : g) Outdoor unit precharged Models (up to 7m) 7m Refrigerant piping length (one way) 10m 15m 07K 09K see <<Specification>> 12K see <<Specification>> K see <<Specification>> 160 Calculation : Xg=20g/m (A-7)m Models Outdoor unit precharged (up to 7m) 7m Refrigerant piping length (one way) 10m 15m 24K see <<Specification>> Calculation : Xg=30g/m (A-7)m 10

11 EVACUATION PROCEDURES(AIR PURGE) Connect the refrigerant pipes (both the liquid and gas pipes) between the indoor and the outdoor units. Remove the service port cap of the stop valve on the side of the outdoor unit gas pipe.(the stop valve will not work in its initial state fresh out of the factory (totally closed with cap on)) When vacuuming Connect the gage manifold valve and the vacuum pump to the service port of the stop valve on the liquid pipe side of the outdoor unit. Run the vacuum pump for more than 15 minutes and at this time confirm that the pressure gage indicates 0.1 Mpa. Check the vacuum with the gage manifold valve, then close the gage manifold valve, and stop the vacuum pump. Leave it as it is for one or two minutes. Make sure the pointer of the gage manifold valve remains in the same position. Remove the gage manifold valve quickly from the service port of the stop valve. After refrigerant pipes are connected and evacuated, fully open all stop valves on gas and liquid pipe sides. Operating without fully opening lowers the performance and causes trouble. Pipe length : 7m maximum No gas charge is needed Pipe length exceeding 7m Charge the prescribed amount of gas Tighten the cap to the service port to obtain the initial status. Retighten the cap. Leak test 11

12 PERFORMANCE CURVES The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions, since operating conditions vary according to the areas where these units are installed. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve. (1) GUARANTEED VOLTAGE Rated voltage : ±10% (198 ~ 264V),50Hz (2) AIR FLOW Air flow should be set at MAX. (3) MAIN READINGS (1) Indoor intake air wet-bulb temperature : CWB (2) Indoor outlet air wet-bulb temperature : CWB (3) Outdoor intake air dry-bulb temperature : CDB (4) Total input: W (5) Indoor intake air dry-bulb temperature : CDB (6) Outdoor intake air wet-bulb temperature : CWB (7) Total input : W } } Cooling Heating Indoor air wet/dry-bulb temperature difference on the left side of the chart on next page shows the difference between the indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service. How to measure the indoor air wet-bulb/dry-bulb temperature difference 1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed is high. 2. Attach at least 2 sets of wet-and dry-bulb thermometers to the outdoor air intake. Cover the thermometers to prevent direct rays of the sun. 3. Check that the air filter is cleaned. 4. Open windows and doors of room. 5. Press the EMERGENCY OPERATION switch once(twice) to start the EMERGENCY COOL(HEAT) MODE. 6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature minutes later, measure temperature again and check that the temperature does not change. INDOOR UNIT OUTDOOR UNIT Wet-and dry-bulb thermometers Wet-and dry-bulb thermometers 12

13 NOTE:The above curves are for the heating operation without any frost. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation 1 Both indoor and outdoor unit are under the same temperature/humidity condition. Dry-bulb temperature Relative humidity(%) ➁ Air flow should be set at MAX. 3 The unit of pressure has been changed to MPa on the international system of units(si unit system). The conversion factor is : 1(MPa G) =10.2(kgf/ f G) (kgf/f G)(MPa G) K 07K Outdoor low pressure /240V Outdoor unit current (A) 220V 240V Ambient temperature( C) Ambient humidity(%) Ambient temperature( C) Ambient humidity(%) 13

14 (kgf/f G)(MPa G) Outdoor low pressure K 220/240V Outdoor unit current (A) 09K 220V 240V (kgf/f G)(MPa G) Ambient temperature( C) Ambient humidity(%) 12K Ambient temperature( C) Ambient humidity(%) 12K Outdoor low pressure /240V Outdoor unit current (A) 220V 240V Outdoor low pressure Ambient temperature( C) Ambient humidity(%) (kgf/f G)(MPa G) 18K /240V Outdoor unit current (A) Ambient temperature( C) Ambient humidity(%) 18K 220V 240V Outdoor low pressure Ambient temperature( C) Ambient humidity(%) (kgf/f G)(MPa G) 24K V Outdoor unit current (A) Ambient temperature( C) Ambient humidity(%) 24K 220V 240V Ambient temperature( C) Ambient humidity(%) Ambient temperature( C) Ambient humidity(%) 14

15 HEAT operation Condition indoor:dry bulb temperature 20.0 C Wet bulb temperature 14.5 C Outdoor:Dry bulb temperature 7,15,20 C Wet bulb temperature 6,12,14.5 C 07K 12K Outdoor unit current (A) 220V 240V Outdoor unit current (A) 220V 240V Ambient temperature( C) Ambient temperature( C) 09K 18K Outdoor unit current (A) 220V 240V Outdoor unit current (A) 220V 240V Ambient temperature( C) Ambient temperature( C) 24K 13 Outdoor unit current (A) V 240V Ambient temperature( C) 15

16 Operation Details 1 Remote controller Remote controller The remote controller transmits signals to the system. 1 ON/OFF button Used to start and stop operation when pressed FEEL COOL DRY FAN HEAT SLEEP TIMER MODE SLEEP TIMER ON TMIER OFF AUTO HIGH MID LOW SWING FAN SWING ON/OFF TIMER button Used to select TIMER operation. UP button (TOO COOL button) Used to increase the set room temperature and time. DOWN button (TOO WARM button) Used to decrease the set room temperature and time. SLEEP button Used to set or cancel sleep mode operation. VANE control button Used to adjust airflow direction. 7 8 FAN SPEED control button Used to select the indoor fan motor speed: Auto, High, Mid and Low. MODE button Used to select the type of operation mode: Feel, Cooling, Dry, Fan and Heating(Only for Heat Pump). Note: Each mode and relevant function will be further specified in following pages. Remote Controller presetting The remote controller is not er presetting presetting as Cooling Only Air Conditioner or Heat Pump by manufacturer. Each time after the remote controller replace batteries or is energized, the arrowhead will flashes on the front of Heat or Cool on LCD of the remote controller. User can preset the remote controller type depending on the air conditioner type you have purchased as follows: Press any button when the arrowhead flashes on the front of Cool, Cooling Only is set. Press any button when the arrowhead flashes on the front of Heat, Heat Pump is set. If you don t press any button within 10 seconds, the remote controller is preset as Heat Pump automatically. Note : If the air conditioner you purchased is a Cooling Only one, but you preset the remote controller as Heat Pump, it doesn t bring any matter. But if the air conditioner you purchased is a Heat Pump one, and you preset the remote controller as Cooling Only, then you CAN NOT preset the Heating operation with the remote controller. 16

17 Elctronic Controller 1. Safety Control (1) Time Delay Safety Control TCL Air Conditioner Service Manual 3 minutes delay for compressor---the compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle in order to protect the compressor. 2 minutes delay for 4-way valve---the 4-way valve is ceased for 2 minutes to prevent the refrigerant-gas abnormal noise when the HEATING operation is OFF or switch to the other operation mode. 20 seconds delay for indoor fan--- When the assistant thermistor turns off, the indoor fan operates in low speed for 20 seconds to release the heat of indoor unit. (2) Indoor Pipe Temperature Sensor Frost Prevention Control When the indoor pipe temperature sensor reads 0 or below for 5 minutes, the indoor pipe temperature sensor frost prevention control starts. The compressor and outdoor fan stop and indoor fan operates at high speed for 3 minutes. After that, if the indoor pipe temperature sensor reads less than 5 this control prolonged until the indoor pipe temperature sensor reads 5 or more. (3) High Temperature Protection Control During HEATING operation, the outdoor fan motor and compressor are controlled by the indoor pipe temperature to prevent the high temperature of compressor. Outdoor fan OFF: 52 Outdoor fan ON:48 Compressor OFF:62 Compressor ON:48 2. I Feel Mode Operation (1) When the I Feel mode is selected, the operation mode and initial set temperature are determined by the initial room temperature at start-up of the operation except to turn off the air conditioner and operates it again. (2) If the mode is change to I Feel mode from other mode, the I Feel mode doesn t operate until compressor stop for more than 3 minutes. Mode Initial room temperature Initial set temperature COOLING DRY HEATING for Heat Pump Type FAN for Cooling Only Type 26 or more 20 to 25 Less than In the I Feel mode, when the controller receives the up or down single of temperature, the set temperature can adjust by 1 upper or lower. The biggest you can adjust by 2 upper or lower. 3. COOLING Mode Operation (1) When the COOLING mode is selected without setting temperature, the system will set the set temperature at 26 automatically with the AUTO FAN speed. (2) When selecting the COOLING mode operation, the system will operate according to the setting by the remote controller and the operation is as following: 17

18 Room Temp. Set TEMP. 1 Set TEMP. 1 Time More than 2 min More than 2 min More than 2 min More than 2 min More than 2 min Indoor Fan Set Speed Set Speed Set Speed Set Speed Set Speed Compressor ON OFF ON OFF ON Outdoor Fan ON OFF ON OFF ON 4. DRY Mode Operation (1) The system for DRY operation used the same refrigerant circle as the cooling circle. (2) When the system operates in DRY mode,at first it operates in cooling mode at 18 for 3 minutes, and then, the system operates in cooling mode with low speed that regards the temperature of the room temperature sensor reads decrease 2 as the set temperature. During the course of this, the fan speed setted operation is failing but the vane motor can be controlled. 5. HEATING Mode Operation (Only available for Heat Pump) (1) When the HEATING mode is selected without setting temperature, the system will set the temperature at 23 automatically with the AUTO FAN speed. (2) When selecting the HEATING mode operation, the system will operate according to the setting by the remote controller and the operation is as following: Set Temp. 1 Set Temp. 1 Room Temp. Time More than 2 min More than 2 min More than 2 min More than 2 min More than 2 min Compressor ON OFF ON OFF ON Outdoor fan ON OFF ON OFF ON (3) In HEATING mode, the indoor fan motor is controlled by Cold Air Prevention Control. (4) Cold Air Prevention Control The function is intend to prevent cold air from being discharged when the heating operation starts or when defrosting. The indoor fan speed will be controlled as following: The vane angle is at the angle C(100 ). Indoor Pipe Temperature OFF UL Set Speed UL OFF UL 18

19 (5) Defrost Defrosting of the outdoor heat exchange is controlled by the microprocessor with detection by the defrost sensor. Defrost starting conditions When the conditions of a) or b) is satisfy, the defrosting operation starts. a) Under the heating operation, the compressor cumulative operation time exceeds 50 minutes and the temperature of the outdoor defrost sensor reads lower than 8 b) Under the heating operation, the compressor cumulative operation time exceeds 50 minutes, if the indoor pipe temperature sensor reads lower than 40 continuously for 2minutes. Note: If haven t the outdoor pipe temperature sensor that use the condition b) to defrost, against use the condition a). Defrost terminating conditions When the condition c) or d) is satisfy, the defrosting operation stops. c) The outdoor defrost sensor reads 15 or more. d) The defrosting time exceeds 10 minutes. Defrosting time chart Outdoor Fan ON OFF ON Revering Valve ON OFF ON Compressor Relay ON OFF ON OFF ON 39S 5S Defrost Count MAX 12min 19S 15S t (6) Assistant Thermistor Function Assistant thermistor is add the thermitor of the electricity to rise the heating capacity automatically not effected by the signal of the remote controller about assistant thermistor ON/OFF buttons. 1) When the condition all of A~G are satisfy, the assistant thermistor opens. A. Under the heating operation, the compressor operates over than 3 minutes. B. The indoor fan operates in normal. C. The system operates not in defrosting. D. The assistant thermistor turn off over than 30 seconds. E. The set temperature is 3 or more than the room temperature. F. The room temperature sensor reads less than 22. G. The indoor pipe temperature reads 43 or less. 2) When one of the conditions of A~E is satisfy, the assistant thermistor is off. A. The compressor is turned off. B. The room temperature sensor reads 24 or more. C. The indoor pipe temperature sensor reads 48 or more. D. The indoor fan is stopped. 6. FAN mode operation 19

20 The indoor fan motor always turns on at the set speed and the vane motor turns on at the set fattle way Valve contro HEATING ON COOLING/DRY OFF The 4-way valve reverses for 5 seconds right before start-up of the compressor as following chart: COOLING/DRY HEATING Compressor 4-way Valve Outdoor Fan 5s 5s 8. SLEEP mode When the SLEEP button is pressed, the SLEEP mode is selected as following: The indoor fan speed is set at the super low speed. When selecting COOLING/DRY operation with SLEEP mode, the set temperature will be raised by 1 1 hour later and by 2 2 hour later. When selecting HEATING operation with SLEEP mode, the set temperature will be dropped by 1 1 hour later and 2 2hour later. After the System operates in SLEEP mode for 8 hours, it will stop automatically. 9. Fan motor control (1) Rotational frequency feedback control The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to feedback the rotational frequency. Comparing the current rotational frequency with the target rotational frequency, the microprocessor adjusts fan motor electric to make the current rotational frequency close to the target rotational frequency. With this control, when the fan speed is switched, the rotational frequency changes smoothly. (2) When the rotational frequency feedback signal has not output for 5 seconds (or when the microprocessor can t detect the signal for 5 seconds), the fan motor is regarded locked-up. Then the electric current to the fan motor is shut off. 10 seconds later, the electric current is applied to the fan motor again. During the fan motor lock-up, the POWER indicator lamp flashes on and off to show the fan motor abnormality. 10. Auto Fan Speed Control (1) When the auto fan speed is selected, the indoor fan motor speed is automatically controlled by the room temperature and the set temperature. (2) In COOLING mode, the indoor fan motor operates as following: Fan Speed Hi Me Lo Room temperature minus set temperature: (3) In HEATING mode, the indoor fan motor operates as following; Fan Speed Hi Mi Lo Room temperature minus set temperature

21 11. Auto Vane Operation Control (1) Vane motor drive The unit is equipped with a stepping motor for the vane. The rotating direction, speed and angle of the motor are controlled by pulse signal transmitted from indoor microprocessor. (2) Positioning The vane is once pressed to the vane stopper below to confirm the standard position and then set to the desired angle. The positioning is decided as follow: When the ON/OFF button is pressed. When the vane control is change from AUTO to MANUAL. When the SWING is finished. When the test run starts. When the power supply turns ON. (3) The auto vane changes as follows by pressing the VANE CONTROL button. (4) VANE AUTO mode In vane auto mode, the microprocessor automatically determines the vane angle and operation to make the optimum room-temperature distribution. (5) SWING mode When presses the SWING button, the vane swings. 12. TIMER Operation How to set the timer Press ON/OFF button to start the air conditioner. Press TIMER CONTROL button for once in timer on--- SET the TIME of TIMER; press for second time---start operation for SHUT OFF; press third time---cancel operation for TIMER. Press TIMER CONTROL button for once in timer off---set the TIME of TIMER; press for second time---start operation for TURN ON; press for third time---cancel operation for TIMER. Press UP and DOWN button to set the time, time setting is 30-minutes units. After setting the timer, check that TIMER INDICATOR lamp of the indoor unit lights. Press the ON/OFF button for the air conditioner operates in timer, the timer will be cancelled. TIMER setting can be cancelled by power failure or breaker functioning. 13. EMERGENCY-TEST Operation When the EMERGENCY Operation switch is press once, COOLING mode is selected and if in 3 seconds the EMERGENCY Operation switch is pressed again, HEATING mode is selected. Then presses once again, the unit switch off. When the remote controller is missing, has failed or the batteries run down, press the EMERGENCY Operation switch on the front of the indoor unit, The unit will start. The first 30 minutes of operation will be the test run operation. The operation is for servicing in set mode. The indoor fan runs at high speed and the system is in continuous operation. The vane motor is ON and the timer is reset to normal. After 30 minutes of test run operation the system shifts to AUTO COOLING/HEATING mode. and the indoor fan runs in outomatic speed. The vane motor is on. The operation continues until the EMERGENCY operation switch is pressed or a button on the remote controller is pressed, the normal operation will start. NOTE: Do not press the EMERGENCY Operation switch during normal operation. 14. AUTO RESTART function (Option) When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are memorized by the indoor electric control PCB. The AUTO RESART function sets to work the 21

22 moment power has restored after power failure. Then, the unit will restart automatically. Auto-restart presetting: The appliance is preset as no auto-restart function by manufacture. If Auto-restart function is needed, follow the below step to active this function: 1) Make sure air conditioner is turned off. 2) Press down and hold the Emergency button (ON/OFF) on the indoor unit white turn on the air conditioner. 3) Keep pressing the Emergency button for over 10s until three short beeps are heard. Then Auto-restart function is activated. To cancel the Auto-restart function, repeat above procedure until four short beeps are heard. 15. Failure Display and Handling a) The failure of the resistance of heat sensitive: When the resistance of heat sensitive reads the temperature is lower than 50 or over than 110 that judge the heat sensitive is bad. b) The Outdoor Protection Control When the system checks the signal from outdoor of the voltage is 0V, the system delay 1second to start for check the signal again, if checks the signal of the voltage is 0V too, that the system not to star, or operates on normal. c) Failure Display When the controller is failure, the buzzer will voice long for three times, and displays the failure from the failure lamp. d) Failure Code If have the digital pipe that display the failure code for digital pipe, or display for the run lamp. Type of failure The lamp flash Display of digital pipe The failure of room temperature sensor Once/cycle E1 The failure of indoor pipe temperature sensor Twice/cycle E2 Outdoor protection function 5 times/cycle E5 The failure of indoor fan 6 times/cycle E6 e) Failure Handling When the room temperature sensor or the indoor pipe temperature sensor is failure, the system will be shut off, the compressor will be OFF, and the outdoor fan and the indoor fan will be OFF. The system doesn t receive the signal of remoter controller except the signal of shut off it. When the failure disappear, the controller can operate in normal mode. before this, presses the ON/OFF to start the system, and it will operate in COOLING or HEATING for 30 minutes, and follows shut off. During this, it displays the failure and the protction is failing. You must be give the electric again to operate it. In the failure, you can operate the FAN mode. When the outdoor protects in the COOLING or DRY, the outdoor unit stops, the indoor fan operates in set speed ; and in the HEATING, the outdoor unit stops, the assistant thermistor stops, the indoor fan operates in cold air prevention control. The system doesn t receive the signal of remoter controller except the signal of shut off it. When the system check the voltage is 220V and the delay control is finished, it operates at normal again. When the indoor fan motor is failure, the compressor is stopped, the outdoor fan and indoor fan is stopped and display the failure. The system doesn t receive the signal of remoter controller except the signal of shut off it. f) Display Of The Control In the display board the lamp from left is the POWER lamp(red), the SLEEP lamp(yellow), the TIMER lamp(yellow), the RUN lamp(green). (7) When gives the control electric, the buzzer voices a long for 0.3 second per cycle. 22

23 Wiring Diagram TCL Air Conditioner Service Manual Mode No.: TAC-07CS/K, TAC-09CS/K, TAC-12CS/K TAC-07CSC/K, TAC-09CSC/K, TAC-12CSC/K INDOOR UNIT transformer Display PCB TH1 Room Temp.Sensor TH2 Pipe Temp.Sensor CN1 CN2 CN8 CN6 CN5 PCB P2-1 P2-2 N.O. 4 K1 COM 3 CN4 CN3 Yellow/Green Blue Brown Yellow/Green Blue Brown Power supply evaporator N 1 Outdoor Unit Vane Motor M M protector Fan Motor Indoor Unit OUTDOOR UNIT Brown Blue Yellow/Green 1 N White Black Blue Yellow/Green Compressor CM C R(M) White S Red Blue Protector Compressor Capacitor Orange Blue Fan Capacitor Blue M Yellow/Green Indoor Unit Outdoor Unit Fan Motor 23

24 Mode No.: TAC-07CHS/K, TAC-09CHS/K, TAC-12CHS/K TAC-07CHSC/K, TAC-09CHSC/K, TAC-12CHSC/K INDOOR UNIT Transformer Theimistor Display PCB TH1 Room Temp. sensor TH2 Pipe Temp. sensor CN8 CN6 CN1 CN2 PCB P2-1 P5 P4 CN11 P2-2 CN10 NO 4 K1 COM 3 CN5 CN4 CN3 Yellow/Green Blue Yellow Red Brown Blue Yellow/Green Brown Evaporator Power Supply N Outdoor Unit Note: The thermistor is only with the assistant thermistor type. M Vane Motor M Protecter Fan Motor Indoor Unit OUTDOOR UNIT Brown(White) Red Yellow Blue Yellow/Green N 4-way Vane Blue White Black Blue Blue Yellow/Green Protecter Orange Compressor CM C S Red M R(M) Blue Compressor Capacitor Blue Fan Capaciter Blue Yellow/Green Indoor Unit Outdoor Unit Fan Motor 24

25 Mode No.: TAC-18CS/K, TAC-18CSC/K INDOOR UNIT To The Outdoor Brown Blue Yellow/Green Yellow/Green L N Blue Brown Transformer 1 N N L White Blue Yellow/Green Yellow/Green Blue Brown PCB AC(N) N.O Relay COM Display PCB Fan Motor FM SM SM Vane Motor Room Temp. Sensor Pipe Temp. Sensor OUTDOOR UNIT Brown Blue Yellow/Green 1 N White Black Blue Yellow/Green Compressor CM C White R(M) S Red Blue Protector Compressor Capacitor Orange Blue Fan Capacitor Blue M Yellow/Green Indoor Unit Outdoor Unit Fan Motor 25

26 Mode No.: TAC-18CHS/K, TAC-18CHSC/K INDOOR UNIT To The Outdoor Unit Brown Red Yellow Blue Yellow/Green Yellow/Green L N Blue Brown N N L White Red Yellow Blue Yellow/Green Yellow/Green Blue Brown O.FAN N.O VAL COM AC(N) Relay Display PCB PCB Transformer FM Fan Motor SM SM Vane Motor Room Temp. Sensor Pipe Temp. Sensor To The Outdoor Sensor OUTDOOR UNIT Brown(White) Red Yellow Blue Yellow/Green Indoor Unit N 4-way Vane Blue White Black Blue Yellow/Green Pipe Temp. Sensor Outdoor Unit Blue Compressor CM C R(M) S Red Blue Protecter Compressor Capacitor Orange M Fan Motor Blue Fan Capaciter Blue Yellow/Green 26

27 Mode No.: TAC-24CS/K, TAC-24CSC/K INDOOR UNIT Transformer To Outdoor Unit White Blue Brown Yellow/Green 1 N L White N.O Blue COM Brown AC(N) Yellow/Green Relay PCB FM Fan Motor SM SM Vane Motor Display PCB Room Temp. Sensor Pipe Temp. Sensor OUTDOOR UNIT Yellow/Green White Blue Brown Yellow/Green Brown Blue To Power Supply To Indoor Unit 1 N L L N Brown White Red White Brown Blue Yellow/Green Fan Capacitor C1 Yellow Blue Red FM Relay Fan Motor Blue White Yellow/Green Red Conpressor Capacitor C2 Blue C S R CM Conpressor Motor 27

28 Mode No.: TAC-24CHS/K, TAC-24CHSC/K INDOOR UNIT To Outdoor Unit White Red Yellow Blue Brown Yellow/Green N L White Red Yellow Blue Brown Yellow/Green To Outdoor Unit O.FAN N.O VAL COM AC(N) Relay PCB Transformer FM Fan Motor SM SM Vane Motor Display PCB Room Temp. Sensor Pipe Temp. Sensor OUTDOOR UNIT Yellow/Green White Red Yellow White Brown Yellow/Green Brown Blue To Power Supply To Indoor Unit N L L N White Red Blue White Brown Blue Brown Blue 4-way Vane Yellow/Green Relay Fan Capacitor C1 Yellow Pipe Temp. Sensor Red FM Fan Motor Blue Compressor Capacity White Yellow/Green Blue Red C2 C S R FM Blue Compressor Motor 28

29 INDOOR UNIT TAC-07CS/K,TAC-07CSH/K,TAC-07CSC/K,TAC-07CHSC/K,TAC-09CS/K,TAC-09CHS/K,TAC-09CSC/K, TAC-09CHSC/K, TAC-12CS/K, TAC-12CHS/K, TAC-12CSC/K, TAC-12CHC/K,

30 INDOOR UNIT TAC-18CS/K, TAC-18CSC/K, TAC-18CHS/K, TAC-18CHSC/K TAC-24CS/K, TAC-24CSC/K, TAC-24CHS/K, TAC-24CHSC/K

31 Outdoor Unit TAC-07CS/K, TAC-07CSC/K, TAC-09CS/K, TAC-09CSC/K, TAC-12CS/K, TAC-12CSC/K, TAC-18CS/K, TAC-18CSC/K, TAC-24CS/K, TAC-24CSC/K

32 Outdoor Unit: TAC-07CHS/K, TAC-07CHSC/K, TAC-09CHS/K, TAC-09CHSC/K, TAC-12CHS/K TAC-12CHSC/K, TAC-18CHS/K, TAC-18CHSC/K, TAC-24CHS/K, TAC-24CHSC/K

33 Parts List Indoor Unit- TAC-07CS/K, TAC-09CS/K No. Part No. Part Name Q ty Remark Installation Plate Base Cross Fan Bearing Mount Evaporator Water Drainage Assembly Vertical Vane Assembly Face Frame Screw Cover Display PCB Display PCB Box Air Filter Front Panel Display PC Board Cover Power Supply Cord Vane Drainage Hose Electrical Box Cover Cable Clamp Terminal Terminal Fixing Board Vane Motor Main PCB Sensor Holder Electrical Box Indoor Motor Cover Indoor Motor Transformer Pipe Temp. Sensor & Room 1 Temp. Sensor Assembly In And Out Pipe Fixer Remote Controller 1 Not shown in Explosion Remote Controller Supporter 1 view Indoor Carton Left Foaming Right Foaming 1 33

34 Indoor Unit- TAC-07CHS/K, TAC-09CHS/K No. Part No. Part Name Q ty Remark Installation Plate Base Cross Fan Bearing Mount Evaporator Water Drainage Assembly Vertical Vane Assembly Face Frame Screw Cover Display PCB Display PCB Box Air Filter Front Panel Display PC Board Cover Power Supply Cord Vane Drainage Hose Electrical Box Cover Cable Clamp Terminal Terminal Fixing Board Vane Motor Main PCB Sensor Holder Electrical Box Indoor Motor Cover Indoor Motor Transformer Pipe Temp. Sensor & Room 1 Temp. Sensor Assembly In And Out Pipe Fixer Remote Controller 1 Not shown in Explosion Remote Controller Supporter 1 view Indoor Carton Left Foaming Right Foaming 1 34

35 Indoor Unit- TAC-07CSC/K, TAC-09CSC/K No. Part No. Part Name Q ty Remark Installation Plate Base Cross Fan Bearing Mount Evaporator Water Drainage Assembly Vertical Vane Assembly Face Frame Screw Cover Display PCB Display PCB Box Air Filter Front Panel Display PC Board Cover Power Supply Cord Vane Drainage Hose Electrical Box Cover Cable Clamp Terminal Terminal Fixing Board Vane Motor Main PCB Sensor Holder Electrical Box Indoor Motor Cover Indoor Motor Transformer Pipe Temp. Sensor & Room 1 Temp. Sensor Assembly In And Out Pipe Fixer Remote Controller 1 Not shown in Explosion Remote Controller Supporter 1 view Indoor Carton Left Foaming Right Foaming 1 35

36 Indoor Unit- TAC-07CHSC/K, TAC-09CHSC/K No. Part No. Part Name Q ty Remark Installation Plate Base Cross Fan Bearing Mount Evaporator Water Drainage Assembly Vertical Vane Assembly Face Frame Screw Cover Display PCB Display PCB Box Air Filter Front Panel Display PC Board Cover Power Supply Cord Vane Drainage Hose Electrical Box Cover Cable Clamp Terminal Terminal Fixing Board Vane Motor Main PCB Sensor Holder Electrical Box Indoor Motor Cover Indoor Motor Transformer Pipe Temp. Sensor & Room 1 Temp. Sensor Assembly In And Out Pipe Fixer Remote Controller 1 Not shown in Explosion Remote Controller Supporter 1 view Indoor Carton Left Foaming Right Foaming 1 36

37 Indoor Unit- TAC-12CS/K, TAC-12CSC/K No. Part No. Part Name Q ty Remark Installation Plate Base Cross Fan Bearing Mount Evaporator Water Drainage Assembly Vertical Vane Assembly Face Frame Screw Cover Display PCB Display PCB Box Air Filter Front Panel Display PC Board Cover Power Supply Cord Vane Drainage Hose Electrical Box Cover Cable Clamp Terminal Terminal Fixing Board Vane Motor Main PCB Sensor Holder Electrical Box Indoor Motor Cover Indoor Motor Transformer Pipe Temp. Sensor & Room 1 Temp. Sensor Assembly In And Out Pipe Fixer Remote Controller 1 Not shown in Explosion Remote Controller Supporter 1 view Indoor Carton Left Foaming Right Foaming 1 37

38 Indoor Unit- TAC-12CHS/K, TAC-12CHSC/K No. Part No. Part Name Q ty Remark Installation Plate Base Cross Fan Bearing Mount Evaporator Water Drainage Assembly Vertical Vane Assembly Face Frame Screw Cover Display PCB Display PCB Box Air Filter Front Panel Display PC Board Cover Power Supply Cord Vane Drainage Hose Electrical Box Cover Cable Clamp Terminal Terminal Fixing Board Vane Motor Main PCB Sensor Holder Electrical Box Indoor Motor Cover Indoor Motor Transformer Pipe Temp. Sensor & Room 1 Temp. Sensor Assembly In And Out Pipe Fixer Remote Controller 1 Not shown in Explosion Remote Controller Supporter 1 view Indoor Carton Left Foaming Right Foaming 1 38

39 Indoor Unit- TAC-18CS/K,TAC-18CSC/K, TAC-24CS/K, TAC-24CSC/K No. Part No. Part Name Q ty Remark Installation Plate Base Cross Fan Bearing Mount Evaporator Water Drainage Assembly Vertical Vane Assembly Face Frame Screw Cover Display PCB Display PCB Box Air Filter Front Panel Display PCB Cover Electrical Box Cover Power Supply Cord Vane A Vane B Drainage Hose Cable Clamp Vane Motor Terminal Terminal Fixing Board Sensor Holder Main PCB Indoor Motor Cover Indoor Motor Electrical Box Transformer Pipe Temp. Sensor & Room 1 Temp. Sensor Assembly Remote Controller Remote Controller Supporter 1 Not shown in Explosion Indoor Carton 1 view Left Foaming Right Foaming Middle Pasteboard Supporter Middle Foaming Supporter 1 39

40 Indoor Unit- TAC-18CHS/K,TAC-18CHSC/K, TAC-24CHS/K, TAC-24CHSC/K No. Part No. Part Name Q ty Remark Installation Plate Base Cross Fan Bearing Mount Evaporator Water Drainage Assembly Vertical Vane Assembly Face Frame Screw Cover Display PCB Display PCB Box Air Filter Front Panel Display PCB Cover Electrical Box Cover Power Supply Cord Vane A Vane B Drainage Hose Cable Clamp Vane Motor Terminal Terminal Fixing Board Sensor Holder Main PCB Indoor Motor Cover Indoor Motor Electrical Box Transformer Pipe Temp. Sensor & Room 1 Temp. Sensor Assembly Remote Controller Remote Controller Supporter 1 Not shown in Explosion Indoor Carton 1 view Left Foaming Right Foaming Middle Pasteboard Supporter Middle Foaming Supporter 1 39

41 Outdoor Unit- TAC-07CS/K, TAC-09CS/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly Compressor and its Accessories Discharge Pipe Suction Pipe Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp( 7) Compressor Power Supply 1 Wiring Earthing Wiring Base Carton Cabinet Carton 1 Not shown in the Explosion Base Foaming 1 view Cover Forming 1 40

42 Outdoor Unit- TAC-07CSC/K, TAC-09CSC/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly 1 Consist The Filter For Dry Compressor and its Accessories Discharge Pipe Suction Pipe Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp1( 7) Compressor Power Supply 1 Wiring Earthing Wiring Base Carton Cabinet Carton 1 Not shown in the Explosion Base Foaming 1 view Cover Forming 1 41

43 Outdoor Unit- TAC-07CHS/K, TAC-09CHS/K No. Part No. Part Name Q ty Remark Grille Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard way Assembly Compressor and its Accessories Discharge Pipe Suction Pipe Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp( 6) Cable Clamp( 7) Compressor Power Supply 1 Wiring Earthing Wiring Base Carton Cabinet Carton 1 Not shown in the Explosion Base Foaming 1 view Cover Forming 1 42

44 Outdoor Unit- TAC-07CHSC/K, TAC-09CHSC/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly 1 Consist the filter for dry Compressor and its Accessories way Vane Assembly Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp( 6) Cable Clamp( 7) Compressor Power Supply Wiring Earthing Wiring Base Carton Cabinet Carton 1 Not shown in the Explosion Base Foaming 1 view Cover Forming 1 43

45 Outdoor Unit- TAC-12CS/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly Compressor and its Accessories Discharge Pipe Suction Pipe Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp Compressor Power Supply 1 Wiring Earthing Wiring Base Carton 1 Not shown in the Explosion Cabinet Carton 1 view Base Foaming Cover Forming 1 44

46 Outdoor Unit- TAC-12CSC/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly 1 Consist The Filter For Dry Compressor and its Accessories Discharge Pipe Suction Pipe Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp( 7) Compressor Power Supply 1 Wiring Earthing Wiring Base Carton Cabinet Carton 1 Not shown in the Explosion Base Foaming 1 view Cover Forming 1 45

47 Outdoor Unit- TAC-12CHS/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly Compressor and its Accessories way Vane Assembly Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp( 6) Cable Clamp( 7) Compressor Power Supply Wiring Earthing Wiring Base Carton Cabinet Carton 1 Not shown in the Explosion Base Foaming 1 view Cover Forming 1 46

48 Outdoor Unit- TAC-12CHSC/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly 1 Consist the filter for dry Compressor and its Accessories way Vane Assembly Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp( 6) Cable Clamp( 7) Compressor Power Supply Wiring Earthing Wiring Base Carton Cabinet Carton 1 Not shown in the Explosion Base Foaming 1 view Cover Forming 1 47

49 Outdoor Unit- TAC-18CS/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly Compressor and its Accessories Discharge Pipe Suction Pipe Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Up Cable Clamp Lower Cable Clamp Compressor Power Supply 1 Wiring Earthing Wiring Base Carton 1 Not shown in the Explosion Cabinet Carton 1 view Base Foaming Cover Forming 1 48

50 Outdoor Unit- TAC-18CSC/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly 1 Consist the filter for dry Compressor and its Accessories Suction Pipe Discharge Pipe Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp Compressor Power Supply 1 Wiring Earthing Wiring AC Contactor Base Carton 1 Not shown in the Explosion Cabinet Carton 1 view Cover Carton 1 49

51 Outdoor Unit- TAC-18CHS/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly Compressor and its Accessories way Vane assembly Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Up Cable Clamp Lower Cable Clamp Compressor Power Supply 1 Wiring Earthing Wiring Outdoor Pipe Sensor Base Carton 1 Not shown in the Explosion Cabinet Carton 1 view Base Foaming Cover Forming 1 50

52 Outdoor Unit- TAC-18CHSC/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly 1 Consist the filter for dry Compressor and its Accessories way Vane assembly Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp Compressor Power Supply 1 Wiring Earthing Wiring AC Contactor Outdoor Pipe Sensor Base Carton 1 Not shown in the Explosion Cabinet Carton 1 view Cover Carton 1 51

53 Outdoor Unit- TAC-24CS/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly Compressor and its Accessories Suction Pipe Discharge Pipe Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp Compressor Power Supply 1 Wiring Earthing Wiring AC Contactor Base Carton 1 Not shown in the Explosion Cabinet Carton 1 view Cover Carton 1 52

54 Outdoor Unit- TAC-24CSC/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly 1 Consist the filter for dry Compressor and its Accessories Suction Pipe Discharge Pipe Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp Compressor Power Supply 1 Wiring Earthing Wiring AC Contactor Base Carton 1 Not shown in the Explosion Cabinet Carton 1 view Cover Carton 1 53

55 Outdoor Unit- TAC-24CHS/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly Compressor and its Accessories way Vane assembly Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp Compressor Power Supply 1 Wiring Earthing Wiring AC Contactor Outdoor Pipe Sensor Base Carton 1 Not shown in the Explosion Cabinet Carton 1 view Cover Carton 1 54

56 Outdoor Unit- TAC-24CHSC/K No. Part No. Part Name Q ty Remark Grille 1 Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left Plate Front Plate Fan Guard Capillary Assembly 1 Consist the filter for dry Compressor and its Accessories way Vane assembly Base Two-way Valve Valve Supporter Three-way Valve Right Plate Electrical Box Cover Electrical Parts Box Capacitor Strip Compressor Capacitor Fan Motor Capacitor Terminal Cable Clamp Compressor Power Supply 1 Wiring Earthing Wiring AC Contactor Outdoor Pipe Sensor Base Carton 1 Not shown in the Explosion Cabinet Carton 1 view Cover Carton 1 55

57 ANNEX 2 GENERAL INDEX 1. Type of air conditioner 2. Four elements of air conditioning 3. Principle of refrigerating cycle 4. Definition of terms 5. The term of unit 6. The term of function 7. Mollier diagram 8. Psychrometric chart 9. Noise characteristics 10. Load calculation 11. The coordination coefficient of cooling capacity

58 1. Type of air conditioner 1.1 Distribution according to function Cooling Cooling + Heating (Electric heater) Cooling + Heating (Heat pump) 27 c 20 c 19 c 40 c Cooling Cooling+Heating 1.2 Distribution according to installation type Window Split Window Skinny PTAC Split Floor Standing Multi Cassette Duct Convertible Duct Cassette Split Window Floor Standing Skinny Convertible PTAC Multi 2

59 2. Four elements of air conditioning 1) Temperature : The dry-bulb temperature by cooling or heating room air. 2) Humidity : A comfortable humidity condition of room air is generally kept by the relative humidity of air, and the room air is controlled into a given relative humidity condition. 3) The degree of purity : Remove dusts in the air, and keep smoke from exceeding the allowable degree of concentration. 4) Air flow : To disperse properly the air regulated in temperature, humidity and the degree of purity into indoor, make an appropriate air flow and keep uniformly the temperature/humidity condition of room unit. Standard for feeling comfortable Classification Summer Winter Temperature 21 ~ 28 C 20 ~24 C Relative humidity 30 ~ 60% 30 ~ 60% Air flow 0.2m/s or less 0.2m/s or less 3. Principle of refrigerating cycle 3.1 Principle of refrigerating : It is as follows. 1) Sprinkling with water in summer causes to cool surroundings. Because water absorbs the heat of surroundings with evaporating. 2) Gasifying a liquid (R-22) which is easier to evaporate than water makes cooler. Because water evaporates at 100 C under 1 atmosphere but freon gas (R-22) does a very low temperature of -40 C 3) It is an Airconditioner that the principle is used for. 3

60 3.2 Refrigerating cycle 1) Refrigerating cycle COOLED AIR EVAPORATOR COILS COMPLETE LIQUID BOIL OFF POINT ROOM AIR HEAT LOAD ROOM AIR CONITIONER CYCLE OF REFRIGERATION SUCTION LINE COOL LOW PRESSURE VAPOR VAPOR INLET CONDENSER COILS HOT DISCHARGED AIR MOTOR OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH COMPRESSOR LIQUID PRESSURE DROP OIL (LIQUID REFRIGERANT) CAPILLARY TUBE LIQUID OUTLET HIGH PRESSURE VAPOR LIQUID REFRIGERANT LOW PRESSURE VAPOR 2) The principle of refrigerating cycle Compressor Condenser Capillary Evaporator Low Press Gas High High Low Compression Press Liquification Press Expansion Press Evaporation Gas Liquid Liquid Low Press Gas (Mid. Temp) (Hi. Temp) (Hi. Temp) (Low Temp) (Mid. Temp) Emission Absorbing 3) The role of each cycle (1) Compression : The gasified refrigerant evaporated is absorbed into compressor through the suction pipe, and then compressed by a piston in cylinder and turned into a gas of high temperature and high pressure which is able to be liquified in a room temperature. (2) Liquification : The gas of high temperature and high pressure in compressor is cooled by air in condenser and liquified by a condensing heat. (3) Expansion : With passing through the capillary tube, the high pressure refrigerant liquified in condenser turns into a low pressure condition, which is easy to evaporate. (4) Evaporation : The liquid refrigerant of low temperature and low pressure passed though the capillary tube absorbs the room air heat in evaporator and evaporates into a gas. 4

61 4. Definition of terms 1) Air conditioning : Keeping room air in an optimum condition, depending on the use or purpose. (Cooling, heating, humidity regulating, air cleaning, etc.) 2) Cooling (Heating) capacity : Calorie which is able to be released (or added) per a unit time in room. It is expressed in Kcal/h, BTU/h or W. 3) Absolute humidity : The amount of vapor contained in the air. Generally it is equal to the amount of vapor by g unit contained in 1m 3 air, and is expressed in g/m 3. 4) Relative humidity : The ratio between the amount of vapor contained in the air and the maximum amount (the amount of saturated vapor) of vapor capable of containing at that temperature in %. * Relative humidity = Actual vapor pressure/saturated vapor pressure x 100 or = Actual vapor pressure of dew point temperature /saturated vapor pressure of dry-bulb temp. x 100 5) Dew point temperature : The surface temperature which starts dewing on the surface when cooling a substance in the air. 6) Latent heat and sensible heat : Heat which causes a change in the state of a substance, with its temperature constant, is called latent heat whereas heat which changes the temperature of a substance is called sensible heat. Latent heat is expressed in terms of calories needed to cause a change of state of a substance per 1 kg. The following equation shows that Q Kcal is needed to change state of a substance weight G Kg when the latent heat is L Kcal/kg. Q = GL Liquid Solid Fusion Heat Solidification Heat Condensation Heat Sublimation Heat Vaporization Heat Gas Three States of a Substance 7) Thermal flow (1) Radiation : A phenomenon which thermal energy as an electro-magnetic wave is transmitted directly from a thermal source. (2) Conductive emission : A phenomenon which transmits from high to low temperature when there is a temperature difference partially in a substance. (Example : When one tip of iron rod becomes hot.) (3) Convection : When the temperature of a fluid like gas or liquid changes by heat, the high temperature part expands and thus the density drops to cause to be light whereas the low temperature part is to be heavy. It means a phenomenon that heat is transmitted together when floating happens by the weight difference of air. 5

62 5. The term of unit 1) Kcal : Adding or releasing heat to or from a substance changes its temperature. This change of temperature is in proportion the heat added or released. This heat is called calorie which is expressed in Kcal or cal. 1 Kcal is equal to the amount of heat required to raise the 1 C temperature of 1kg water 4 C. 2) BTU : 1 BTU is equal to the amount of heat required to raise the 1 F temperature of 1 lb water. 1 Kcal = BTU, 1 BTU = Kcal 3) RT : 1 RT (Refrigerating Ton) is equal to the capacity which makes 1 Ton water 0 C into ice 0 C in 24 hours. It is expressed in calorie required to freeze water 1 Ton water 32 F(2000 lb) into ice 32 F, and when using the solidification latent heat of water, 1RT is as follows 1 RT = 144BTU/lb x 2000 lb/24hr = 12,000 BTU/hr = 3,024 Kcal/hr = KW 4) Hp : Horse Power 1 Hp = 0.75 KW = 645 Kcal/h, 1W = 0.86 Kcal/h 5) Temperature conversion ( C F) F = 9/5 C + 32, C = 5/9 ( F-32) 6) Area or volume conversion 1m 2 = ft 2, 1m 3 = ft 3 7) Weight conversion 1Kg = 2.2 lb, 1 lb = 0.45 Kg 8) Unit conversion table Classification BTU/h Kcal/h W KJ Hp RT 1BTU/h Kcal/h W KJ Hp RT

63 6. The term of function 1) Compressor : Absorb and compress the low pressure refrigerant gasified in evaporator and flow into condenser. At this time, the low pressure needed is kept in evaporator and the refrigerant gas flows into condenser as high pressure condition. The most economical condition of compressor for an operating reason is when the refrigerant gas absorbed into compressor is in dry-saturated condition. The overly-heated suction gas may cause the mechanical ability of compressor to be reduced and the cylinder clearance of compressor to be re-expanded, and as a result, the refrigerant may be used without its refrigerating effect. The types of compressor is Recipro. type, Rotary type, Scroll type, Screw type, etc. and consists of cylinder, piston, vane, shaft, bearing, case and accumulator for structure reason. 2) Condenser : The high temperature/high pressure refrigerant gas compressed by compressor is sucked into condenser and liquified by cooling. The condenser is cooled by the forced-convection of fan. The calorie emitted from condenser is equal to the sum of the heat absorbed in evaporator and the calorie used for compressor operating. 3) Evaporator : Absorb the heat from room air by forced-convection. The liquid refrigerant in evaporator is evaporated by absorbing heat from room air and flowed into compressor as a gasified state. The evaporating temperature of refrigerant is decided by pressure, which is decided by the wet-bulb temperature of suction air and the wind flow, and the pressure in evaporator is normally 5Kg/cm 2 G and the evaporating temperature is 5~8 C. 4) Capillary : Regulate the refrigerant flow into evaporator, lower the pressure of refrigerant, and expand into a liquid of low temperature and low pressure. The type of capillary is generally a thin and long copper tube of 0.6~2.0mm 2 inner diameter and 1~2m long. The resistance of tube causes to turn into a liquid of low pressure and low temperature. 5) Dryer : Any moisture in refrigerating cycle may cause the compressor motor to be damaged or the refrigerant to be an ice state in the middle of cycle, which blocks the flow of refrigerant. Dryer is installed in a cycle for the purpose of removing such moisture. There are two types of dryer ; a liquid line dryer which is connected serially to the condenser outlet and a suction line dryer which is connected serially to the suction line, with a desiccative in dryer. The dryer is designed for uni-directional flowing of the refrigerant. 6) Muffler : Since Recipro. type compressor discharges the compressed gas discontinuously, a pulsating sound or vibration occurs through pipe. Muffler is installed in the discharged part of compressor for the purpose of absorbing the vibration of the discontinuously-discharged gas. 7) Strainer : Strainer serves to remove foreign substances from refrigerant by a metal net pelt of fine grid or a glass wool being inserted into metal vessel and refrigerant being passed through between the interval. The mounted position is between condenser and temperature auto expansion valve. 8) Service valve : SVC valve is used for vacuum working and refrigerant filling. Front seat is called a state which cap is opened and valve is completely rotated clockwise and refrigerant stops flowing in that condition, whereas back seat is called a state which valve is rotated completely counter-clockwise and refrigerant flows. In case of pressure measurements or vacuum work from service valve, the back seat condition is changed into some front seat condition. Product is released in front seat condition, so the back seat by brake-in is not needed. 7

64 9) Motor : Drive a rotating force by electric power and supply the driving force to fan and blower in both indoor and outdoor of air conditioner. 10) Fan : Serve to blow air through condenser and blow out the heat generated with refrigerant liquified in condenser. Its structure is similar with a motor fan. 11) Blower (Cross Flow Fan: C.F.F) : Suck room air, blow into evaporator, make evaporator absorb the heat, and disperse the cooled air into room. Blower is placed indoor unit, so a small size, high wind flow and low noise type is used. 12) Thermostat (Thermistor) : Sense the suction air into room and regulate automatically room temperature by compressor on/off depending on temperature. Thermostat is used for a mechanical type model and thermistor for a micom type control method. 13) Capacitor : Supply a driving torque to the compressor motor or fan motor for aircon and make the operating efficiency better during operation. 14) Over load protector (O.L.P) : A protective device of automatic return type which is placed in the wire of compressor and shuts off the power of compressor motor against the overheat and overcurrent of compressor. At this time, compressor is stopped operating by power off and fan only is at work. Generally the working temperature is 115±5 C and the return temperature is 93±5 C. 15) High pressure switch (H.P.S/W) : A protective device of automatic return type which protects compressor from overload by sensing the discharge pressure of compressor, working at an abnormal high temperature, and shutting off the electric circuit. Generally the working pressure is 28kg/cm 2 G and the return pressure is 23 kg/cm 2 G. 16) Sump heater : A cord heater which is wound around the compressor bottom, and its type is decided depending on the capacity of compressor. If compressor is not at work at power on, sump heater is at work whereas if compressor works, sump heater does not work, so be sure to always keep the compressor temperature higher than any other unit. 17) Accumulator : A kind of liquid refrigerant separator which prevents the liquid refrigerant from sucking into compressor and is installed in the suction inlet of compressor. 18) Reversing valve (4 way valve) : Convert the flow of refrigerant upon cooling/heating switch-over, electrically power on when heating and off when cooling, be installed in outdoor, and have four connecting valves as shown in the name. The refrigerant passing through compressor always flows to a constant direction and is able to reverse-operate completely the refrigerating cycle of both cooling and heating by a reversing valve. Consist of reversing valve and solenoid valve. The main valve in reversing valve uses a nylon resin which is deformed by heat 120 C or over and thus causes valve not to work, so be cautious while operating or when welding. 8

65 19) Solenoid valve : Regulate the refrigerant flow by refrigerant on/off in cycle which refrigerant flows according as the valve operates through a coil unit being powered on. Mainly it is used when reversing the 4 way valve of a cooling/heating model or constructing each unit cycle of multi model. 20) Check valve : Prevent refrigerant from reverse flow in refrigerating cycle. It is installed in a place where it is necessary to prevent the reverse flow of refrigerant in a copper pipe. It has a mechanical structure and attached to the opposite of a heating capillary to expand the heating/cooling model by two speeds, and is constructed so as to flow through capillary in heating and through the check valve in cooling only. 9

66 7. Mollier diagram 7.1 Refrigerant state transition on Mollier diagram 1) Refrigerant changes iso-barically and iso-thermally in evaporator, so enthalpy (the heat absorbed from evaporator) increases as shown in Figure 7.1 below. 2) In compressor, as the running speed of compressor is fast, it is thought there is no thermal input/output from or to the outside within a short time, which is regarded as an adiabatic change. Accordingly the compression process rises upto the discharge pressure along the iso-entropic line and the amount of energy of the compressor is the same as the enthalpy change of refrigerant between compressor cylinder inlet and outlet. 3) In condenser, the overheated vapor is cooled as much as the degree of overheat, saturated, and then condensed and somewhat over-cooled. The process is established by an isobar process, so an enthalpy down (the calorie emitted from condenser) happens horizontally on diagram. 4) Expansion process is a throttle expansion which there is no enthalpy change before and after the expansion valve and the pressure and temperature drop, so the process changes vertically downward. P Condensation Expansion Evaporation i Figure 7.1 Refrigerating cycle 7.2 How to draw a refrigerating cycle For example, draw a refrigerating cycle under the following operating condition. 1) Evaporation & condensation temperature : Find an evaporation temperature 8 C on the saturated liquid line or saturated vapor line in Mollier diagram and draw a horizontal line, isobar line (pressure 6.54 Refrigerant Evaporation temp. R-22 8 C kg/cm 2 abs) from that point. In the same manner, draw Condensation temp. 46 C a isobar line at condensation temperature 46 C, and the evaporation and condensation process changes Overheat temp. of suction gas. 8 C states between two isobar lines. Temp. just before expansion valve. 40 C Compression P Pd =18.1kg/cm, 2 abs P s = 6.54kg/ 2 cm, abs 8 C 46 C tc = 46 C tc = 8 C 46 C 8 C i Figure 7.2 Evaporation & condensation temperature P Ps 8 C 16 C tc = 16 C A Evaporation 16 C i Compression 8 C 152kcal/kg Figure 7.3 Suction gas state of compressor 2) Suction gas state of compressor : The state of compressor suction gas is the same as that of refrigerant at evaporator outlet, and the evaporation temperature and is 8 C and the degree of superheat is 8 C, so the temperature of suction gas is to be 16 C Accordingly the state point of compressor suction gas is the intersection between pressure 6.54 kg/cm 2 abs at wet vapor 8 C and superheat vapor 16 C, and is a point of pressure 6.54 kg/cm 2 abs, temperature 16 C, enthalpy Kcal/kg, non-volume m 3 /kg, entropy Kcal/kg K. (See Figure 7.3) 10

67 3) Discharged gas state (the state at compressor outlet or condenser inlet) : An adiabatic change is almost seen in compressor, so the state of discharged gas follows the isentropic line at point B of Figure 7.4. Accordingly the state point of discharge gas is the intersection with wet-vapor pressure 18.1 kg/cm 2 abs entrophy 1.138kcal/kg K at condensation temperature 46 C, and is a point of pressure 18.1kg/cm 2 abs, temperature 75 C, enthalpy Kcal/kg, specific volume m 3 /kg, entropy Kcal/kg K, and superheat 30 C. (Figure 7.4) P Isenthalpy line 75 C P Supercooling=6 C 40 C 46 C P d td = 46 C B P d C 40 C td = 46 C i 158.0kcal/kg Figure 7.4 A state of discharge gas 112kcal/kg Figure 7.5 A state of condensed liquid 4) State of condensed liquid : The temperature of refrigerant liquid just before expansion valve in the design condition is 40 C, so the state point is the intersection between 46 C wet air pressure 18.1kg/cm 2 abs and 40 C isothermic line (point C of Figure 7.5) in pressure 18.1kg/cm2 abs, temperature 40 C, enthalpy Kcal/kg, supercooling 6 C. 5) State of expansion valve outlet (The state of evaporator inlet) : The state is changed on isentropic line without thermal input/output in expansion valve, so the state point is the intersection between enthalpy Kcal/kg line and evaporation temperature 8 C isothermal line (point D of Figure 7.6) at pressure 6.54kg/cm 2 abs, temperature 8 C, enthalpy Kcal/kg, specific volume m 2 /kg, entrophy Kcal/kg K, and the degree of dryness 0.2. i P Pd Ps 40 C D Isenthalpy line tc= 8 C P Temperature just before expansion v/v =40 C e f d Expansion g q2 Condensation temp=46 C 46 C Condensation 40 Suction gas temp. = -16 C Dry saturated vapor Evaporation temp.= 8 C a Evaporation c Compression b kcal/kg i O q3 = (ia-ig) q1 = (ia -if) Al Figure 7.6 A state of expansion valve outlet Figure 7.7 A standard refrigerating cycle 11

68 For the refrigerating cycle a b e f as shown in Figure 7.7, if the cooling capacity of condenser increases by the temperature down of saturated liquid, cooling water or air and then the temperature of condenser outlet refrigerant liquid decreases, the refrigerating cycle will be a b e f. Likewisely, the temperature difference when the temperature of condenser outlet refrigerant liquid is below the temperature of saturated liquid at that pressure is called the degree of supercooling, which enhances the refrigerating effect. The effect of supercooling is as follows. Standard Supercooling rise Refrigerating effect q e=ia-ig < q e'=ia-if q e ia-id q e' ia-if Coefficient of performance = < = Al ib-ia Al ib-ia 7.3 Calculation of refrigerating cycle 1) Refrigerating effect : Calories which evaporator absorbes, and the refrigerant flowing through evaporator is a wet vapor and at outlet a superheat vapor. In D A process in Figure 7.8, refrigerant absorbs Calorie qe from surroundings with evaporating. qe = ia - id... (7.1) The refrigerating effect is one which is calculated by equation (7.1), and is expressed in calories which refrigerant 1kg absorbs from evaporator during A B C D cycle. The refrigerating effect when the state of refrigerant gas sucked into compressor is changed into A', A'' in Figure 7.8 is as follows. qe' = ia' - id... (7.2) qe" =ia" - id... (7.3) P C B P C B D q" e A" A' A D A q' e q e q e AI ic i D i i" A i' A i A Figure 7.8 Refrigerating effect 2) Work of compression : The heat equivalent of work which has compressed refrigerant 1kg is the difference of enthalpy between compressive process A B as shown in Figure 7.9, and the equation of calculation is as follows. Al = ib - ia... (7.4) 3) Calorie of condensation : The calorie emitted from condenser is the sum of the refrigerating effect and the heat equivalent of work. (Figure 7.10) qe' = qe + Al qe = (ia - id) + (ib - ia) = ib - id... (7.5) P Figure 7.9 Work of compression C D ic id i q e q e' = q e i AI ia i B i A A AI Figure 7.10 Calorie of condensation i B B 12

69 4) Circulation amount of refrigerant : An amount of refrigerant to be evaporated in evaporator to obtain the refrigerating capacity needed. It is expressed in the weight by the unit time. G = Q... (7.6) qe G: Circulation amount of refrigerant (kg/h) Q: Refrigerating capacity needed (Kcal/h) qe: Refrigerating effect by the refrigerant 1kg (Kcal/kg) To decide the capacity of compressor, the circulation amount of refrigerant should be converted into the suction gas amount of compressor. V = GvA = Q va= qe V: Suction gas amount of compressor (m 3 /h) VA: Specific volume of refrigerant at compressor inlet (m 3 /kg) The amount of piston extrusion is calculated as follows. D: Diameter of cylinder (m) n: Rotational speed of compressor (rpm) L: Piston stroke (m) N: No. of cylinder QvA (m 3 /h)... (7.7) ia - id V' = π D 2 L X 60nL... (7.8) 4 5) Coefficient of performance : The efficiency of refrigerating cycle. It is expressed in COP as the abbreviation of Coefficient of Performance. COP = Refrigerating effect Refrigerating effect Heat equivalent of work Shaft power for compressor(kw) x 860 COP = qe Al = ia-id ib-ia...(7.9) Al : Heat equivalent of work for compression (Kcal/kg) qe : Refrigerating effect (Kcal/kg) COP is greater than 1, and the greater COP is, the better the performance is. For the general COP of refrigerator, compressive efficiency hc and machine efficiency hm should be considered. COP'= COP x hc x hm...(7.10) 13

70 Example) By using the Mollier diagram of R-22, find the compression ratio, refrigeratiny effect, work of compression, calorie of condensation, circulation amount of refrigerant, coefficient of performance, and refrigerating effect per 1KW. Condensation pressure : Pd = 18.1kg/cm 2 abs Evaporation pressure : Ps = 6.5kg/cm 2 abs Compression ratio : Pr = Pc/Pe = 18.1/6.5 = 2.78 Enthalpy : ia = 148.5kcal/kg ib = 158.5kcal/kg ic = 110kcal/kg id = 110kcal/kg ic' = id'= 112kcal/kg ie = 148kcal/kg Absolute Pressure(kg/cm2 abs) C D 46 C C C' 38 C B 75 C D' 8 C E 16 C A m 3/kg m /kg Accordingly, Refrigerating effect : q1 = ia - id = = 38.5 [kcal/kg] Work of compression : A1 = ib - ia = = 10 [kcal/kg] Calorie of condensation : q2 = ib - ic = = 48.5 [kcal/kg] Circulation amount of refrigerant : G=Q/q1 = 3320/38.5 = 86.2 [kg/h.rt] (per 1 Refrigerating Ton) COP : q1/a1 = 38.5/10 = 3.85 Refrigerating effect per 1KW : k = 860 x 3.85 = 3311 [kcal/h. KW] 14

71 0.01 TCL Air Conditioner Service Manual Mollier diagram p-h graph of R22 v= m 3 /kg p-h graph of R C 150 C 100 C t=90 C t=90 C x= S=1.35kcal/kg.K 50 C 0 C 50 C 100 C 200 C 150 C 50 C s=1.10kcal/kg.k v= 2.0m 3 /kg t=-90 C t=-90 C h kcal/kg P (kgf/cm 2 ) 15

72 8. Psychrometric chart 8.1 Psychrometric chart Psychrometric chart shows the characteristics of moist air by a diagram, including i-x, t-x, and t-i diagram. The i-x diagram is shown in the right side. A point expressing the state of air in the psychrometric chart is called a state point, which is used for finding a dry-bulb temperature,wet-bulb temperature, dew point temperature, relative humidity, absolute humidity, enthalpy, etc. For example, at dry-bulb temperature 26 C, and relative humidity 50%, the enthalpy, absolute humidity, wetbulb temperature, dew point temperature and specific volume is found from the psychrometric chart as follows. Enthalpy I = 12.6 (Kcal/kg) Absolute humidity x = (kg/kg) Wet-bulb temperature t = ( C) Dew point temperature t = ( C) Specific volume v = (m 3 /kg) I=12.6 t"=14.70 t'=18.71 =50% V=0.862 [ C] 26 Figure. Psychrometric chart Discomfort index (DI) In summer, Discomfort Index is frequently used in the weather forecast on TV or newspapers. Man feels hot or dry according as the relative humidity is high or low, but not the absolute humidity. Generally, now that we feel discomfortable at high relative humidity, the state which is felt uncomfortable at both dry-bulb and wetbulb temperature may be expressed empirically as an equation, Discomfort Index (DI), which is used as an emotional index for summer temperature and humidity condition. * DI = (Wet-bulb temperature + Dry-bulb temperature) x * Degree of DI DI Degree of DI Intolerable discomfort (Unable to bear the sultry weather.) Everybody feels uncomfortable. (Sweat at hot weather.) Half or more people feel uncomfortable. (Feel the heat a little.) Start to feel uncomfortable. Comfortable 16

73 8.3 Dewing The most damp condition of air is at the saturated air condition of relative humidity 100% which is unable to contain moisture any longer. As a result, the water vapor (moisture) in the air is condensed and turned into liquid as waterdrop which can be seen. Such phenomenon is called dewing or condensation, commonly sweating. Dew point temperature means the temperature of air when starting to form dew. For example, when taking out a bottle of beer from refrigerator in summer, you have probably seen several times the surface of beer bottle sweats, that is, waterdrop form. The phenomenon is because the moist air around the bottle of beer is changed rapidly into a state beyond relative humidity 100% with rapid cooling below the dew point temperature, and the vapor in the air not contained forms dew. Maybe you have ever experienced damages that summer cooling in your house caused the bedclothes in wardrobe to be damp by de wing or the winter heating caused to form dew on window and waterdrop to flow into wall or floor carpet. Dewing prevention Such a fine particle (vapor in air) that its shadow or shape has never appeared is rapidly cooled when it touches a cold substance below dew point temperature. That is, shocking or starting by rapid cooling causes waterdrops to be emerged out; dewing. It is necessary to prevent from dewing in room because it gives trouble. For example, in order to keep room windows from dewing in heating, insulation effect should be increased by making room humidity down or using a double window. Americans frequently does not humidify when heating, and if humidifying, they lower room humidity considerably. Relative humidity in room to prevent inner area from dewing Heat loss rate [Kcal/m 2 h C] Outdoor temperature [ C] [%] 25[%] 29[%] 33[%] 38[%] 43[%] 48[%]

74 Psychrometric chart Steam partial pressure Pw [mmhg] Absolute humidity x [kg/kg(da)] Enthalpy h [kcal/kg(da)] PSYCHROMETRIC CHART NORMAL TEMPERATURES ATMOS PHERIC PRESSURE 760mm Hg (-10~+50 C, ATMOS PHERIC PRESSURE 760mm Hg) Heat inherent moisture ratio =dh/dx[kcal/kg] Sensible Heat Factor Relative humidity ø [%] Saturated degree ø [%] Wet Bulb temperature t' [ C] Specific volume v [m 3 /kg(da)] Ice water Dry Bulb temperature t' [ C]