Airwell K XLN24 RC 3PH Technical Manual Download Page 61

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CONTROL SYSTEM

11-26

Revision 0

11.12.3 Heating Mode Protections

a. Outdoor Coil Deicing (excluding RH Group)

Mode: HEATING, AUTO (at heating)

Temp: Selected desired temperature

Fan: Any

Timer: Any

I-FEEL: Any

Control function
To protect the outdoor coil from ice formation by controlling COMP & RV operation.

1) Deicer Activation Algorithm

a) Static deicer threshold is -5°C

b) Dynamic deicer threshold changes of 3°C in 3 minutes in the OCT

temperature

c) In first COMP activation (after SB or OFF), if OCT < 0°C, min time to first

deicer is 10 min else 40 min.

d) In a case of reading 3 successive OCT values below –10°C and

previously 3 successive OCT values of 43°C (4.7 K) , the unit will activate
deicing procedure.

Summary of Contents for K XLN24 RC 3PH

Page 1: ...K XLN Cassette R410A Indoor Units Outdoor Units R410A K XLN24 RC OU724 RC K XLN24 RC 3PH OU724T RC K XLN30 RC OU830 RC K XLN30 RC 3PH OU830T RC REFRIGERANT R410A HEATPUMP TM K XLN A 0 GB August 2005...

Page 2: ...represent effected non effected pages divided by chapters Dates of issue for original and changed pages are Original 0 August 2005 Total number of pages in this publication is 88 consisting of the fo...

Page 3: ...3 RATING CONDITIONS 3 1 4 OUTLINE DIMENSIONS 4 1 5 PERFORMANCE DATA 5 1 6 ELECTRICAL DATA 6 1 7 WIRING DIAGRAMS 7 1 8 ELECTRICAL CONNECTIONS 8 1 9 REFRIGERATION DIAGRAMS 9 1 10 TUBING CONNECTIONS 10...

Page 4: ...ondensate water pump Automatic treated air sweep Easy installation and service 1 3 Indoor Unit The indoor unit is celling mounted and can be easily fitted to many types of residential and commercials...

Page 5: ...e type interconnecting tubing to be produced on site For further details please refer to the Installation Manual 1 8 Accessories ASK All Season Kit For low ambient working conditions in cooling an ASK...

Page 6: ...724T RC R410A OU830 ST R410A OU830T ST R410A OU830 RC R410A OU830T RC R410A this conbination is out of the lego concept and cannot be matched with other types of indoor units The above table lists out...

Page 7: ...unit 7 Frame Units per pallet units 5 Unit 15 Frame INDOOR Stacking height units 5 Levels unit 15 Levels Frame Refrigerant control Capillary tube restrictor for heating Compressor type model Rotary M...

Page 8: ...ame Units per pallet units 5 Unit 15 Frame INDOOR Stacking height units 5 Levels unit 15 Levels Frame Refrigerant control Capillary tube restrictor for heating Compressor type model Rotary Mitsubishi...

Page 9: ...40 unit 7 Frame Units per pallet units 5 Unit 15 Frame INDOOR Stacking height units 5 Levels unit 15 Levels Frame Refrigerant control Capillary Compressor type model Rotary Mitsubishi NN33VAAMT Fan t...

Page 10: ...nit 7 Frame Units per pallet units 5 Unit 15 Frame INDOOR Stacking height units 5 Levels unit 15 Levels Frame Refrigerant control Capillary Compressor type model Rotary Mitsubishi NN33YCAMT Fan type q...

Page 11: ...or 27o C DB 19o C WB Outdoor 35 o C DB Heating Indoor 20o C DB Outdoor 7o C DB 6o C WB 3 1 Operating Limits 3 1 1 R410A Indoor Outdoor Upper limit 32o C DB 23o C WB 46o C DB Cooling Lower limit 21o C...

Page 12: ...OUTLINE DIMENSIONS Revision 0 4 1 4 OUTLINE DIMENSIONS 4 1 K XLN 24 30...

Page 13: ...OUTLINE DIMENSIONS 4 2 Revision 0 4 2 Outdoor Unit OU724 4 3 Outdoor Unit OU830...

Page 14: ...1 4 93 5 22 5 12 5 25 25 PI 1 86 1 88 1 90 1 91 1 91 TC 6 16 6 63 7 18 7 45 7 72 SC 4 38 4 73 5 10 5 00 5 21 30 PI 2 02 2 04 2 07 2 08 2 09 TC 5 69 6 16 6 77 7 11 7 38 SC 4 12 4 48 4 90 4 84 5 04 35 P...

Page 15: ...8 35 20 9 03 2 47 8 81 2 68 8 57 8 78 the above chart includes the weighted deicing infleuence LEGEND TH Total Heating Capacity kW PI Power Input kW WB Wet Bulb Temp o C DB Dry Bulb Temp o C ID Indoor...

Page 16: ...r Temp DB o C Suction Pressure Bar g 21 15 D B W B C 24 17 D B W B C 27 19 D B W B C 29 21 D B W B C 32 23 D B W B C Discharge Pressure VS Outdoor Temp 14 16 18 20 22 24 26 28 30 32 34 36 38 40 15 20...

Page 17: ...Outdoor Temp 3 4 5 6 7 8 9 10 11 10 5 0 5 10 15 20 Outdoor Temp WB o C Suction Pressure Bar g 15 D B C 20 D B C 25 D B C Discharge Pressure VS Outdoor Temp 18 23 28 33 38 43 10 5 0 5 10 15 20 Outdoor...

Page 18: ...27 6 43 25 PI 2 43 2 45 2 48 2 50 2 50 TC 7 55 8 13 8 80 9 13 9 46 SC 5 36 5 79 6 25 6 12 6 37 30 PI 2 63 2 67 2 70 2 72 2 73 TC 6 97 7 55 8 30 8 72 9 05 SC 5 05 5 49 6 00 5 93 6 17 35 PI 2 85 2 89 2...

Page 19: ...2 58 7 5 56 2 36 5 36 2 49 5 16 2 63 2 5 90 2 39 5 70 2 53 5 51 2 68 2 7 18 2 51 6 88 2 66 6 59 2 82 6 9 21 2 69 8 94 2 88 8 63 3 06 10 10 01 2 84 9 74 3 04 9 48 3 25 15 10 82 2 97 10 55 3 20 10 28 3...

Page 20: ...6 27 6 43 25 PI 2 37 2 39 2 41 2 43 2 43 TC 7 55 8 13 8 80 9 13 9 46 SC 5 36 5 79 6 25 6 12 6 37 30 PI 2 56 2 59 2 63 2 65 2 66 TC 6 97 7 55 8 30 8 72 9 05 SC 5 05 5 49 6 00 5 93 6 17 35 PI 2 77 2 81...

Page 21: ...1 40 2 96 11 13 3 21 10 82 3 46 the above chart includes the weighted deicing infleuence LEGEND TH Total Heating Capacity kW PI Power Input kW WB Wet Bulb Temp o C DB Dry Bulb Temp o C ID Indoor OU Ou...

Page 22: ...15 20 25 30 35 40 46 Outdoor Temp DB o C Suction Pressure Bar g 21 15 D B W B C 24 17 D B W B C 27 19 D B W B C 29 21 D B W B C 32 23 D B W B C Discharge Pressure VS Outdoor Temp 16 18 20 22 24 26 28...

Page 23: ...4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 10 5 0 5 10 15 20 Outdoor Temp WB o C Suction Pressure Bar g 15 D B C 20 D B C 25 D B C Discharge Pressure VS Outdoor Temp 18 20 22 24 26 28 30 32 34 36 38 40 10 5 0...

Page 24: ...11 0 15 20 25 30 35 40 46 Outdoor Temp DB o C Suction Pressure Bar g 21 15 D B W B C 24 17 D B W B C 27 19 D B W B C 29 21 D B W B C 32 23 D B W B C Discharge Pressure VS Outdoor Temp 16 18 20 22 24...

Page 25: ...4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 10 5 0 5 10 15 20 Outdoor Temp WB o C Suction Pressure Bar g 15 D B C 20 D B C 25 D B C Discharge Pressure VS Outdoor Temp 18 20 22 24 26 28 30 32 34 36 38 40 10 5 0...

Page 26: ...2 5 mm 2 2x0 75 mm 2 OCT senser 6x2 5 mm 2 2x0 75 mm 2 OCT senser 6 X 2 5 mm 2 2 X 0 5 mm 2 OCT Sensor 6 3 Three Phase Units MODEL K XLN 24T K XLN30T To Outdoor To Outdoor Power Supply 3PH 400V 50 Hz...

Page 27: ...M SENSOR OUT P5 P10 PLUG PUMP P8 P12 P14 P3 P11 P4 P6 P1 P2 DISPLAY BOARD PTC SWITCH Water switch PTC PTC PLUG PLUG PLUG 12PIN PTC 7 2 Indoor Unit K XLN 24 30 Power Supply to Outdoor ICT SENSOR CAP1 2...

Page 28: ...10 OUT P5 P14 P9 P12 P8 ROOM SENSOR PLUG R D BU PUMP P6 P4 PTC PTC PTC 12PIN Water switch CN406 CN405 FUSE CN403 CN402 CN402A CN403A BU W H PLUG FUSE CN401 CN401A RD LEG EN D BK BLAC K BU BLU E BN BR...

Page 29: ...WIRING DIAGRAMS Revision 0 7 3 7 5 Outdoor Unit OU724 OU830 3PH...

Page 30: ...ELECTRICAL CONNECTIONS Revision 0 8 1 8 ELECTRICAL CONNECTIONS 8 1 K XLN 24 Power Supply to Indoor 8 2 K XLN 24 30 Power Supply to Outdoor...

Page 31: ...ELECTRICAL CONNECTIONS 8 2 Revision 0 8 3 K XLN 24 30 3PH...

Page 32: ...REFRIGERATION DIAGRAMS Revision 0 9 1 9 REFRIGERATION DIAGRAMS 9 1 Heat Pump Models 9 1 1 K XLN 24 R410A...

Page 33: ...REFRIGERATION DIAGRAMS 9 2 Revision 0 9 1 2 K XLN 30 R410A...

Page 34: ...REFRIGERATION DIAGRAMS Revision 0 9 3 9 2 Cooling Only Models 9 2 1 K XLN 24 30...

Page 35: ...p end 2 Refrigerant Valve Port use Allen wrench to open close 3 Valve Protection Cap 4 Refrigerant Valve 5 Service Port Cap 6 Flare Nut 7 Unit Back Side 8 Copper Tube When the outdoor unit is installe...

Page 36: ...3 SW NO 2 SW NO 1 RC ALL MODES OF OPERATION OFF OFF STD COOL FAN DRY ACTIVE OFF ON HEAT COOL FAN DRY ACTIVE ON OFF AUTO FAN AF ON ON VERTICAL SWING ONLY TEMP DISPLAY IN C DEGREES OFF HORIZONTAL VERTIC...

Page 37: ...CONTROL SYSTEM 11 2 Revision 0 11 1 3 Main PCB Controller...

Page 38: ...L SYSTEM Revision 0 11 3 11 1 4 Display Board PCB Legend 1 Name Plate 2 Cooling LED 3 Heating LED 4 Push Button Mode 5 Timer LED 6 STBY LED 7 Operation LED 8 IR Receiver 9 Buzzer 10 Display Port Conne...

Page 39: ...LEVEL4 Overflow Level Max Maximum Min Minimum min Minute time NA Not Applicable OCP Outdoor Condensation Pump OCT Outdoor Coil Temperature RT3 sensor OF OFAN Outdoor Fan OPER Operate Para Paragraph RA...

Page 40: ...N operation a Min time interval between IFAN speed change in AUTOFAN Mode is 30 sec b Min time interval between IFAN speed change in H M L Mode is 1 sec c IFAN speed in Heat Cool AUTOFAN Mode is deter...

Page 41: ...ce after a unit is switched from OFF STBY to operation At the first occurrence of 10 min continuous COMP operation the current ICT are compared with those when the COMP was switched from OFF to ON 10...

Page 42: ...hen at the first occurrence of 15 min continuous COMP operation ICT is compared with ICT reading when the COMP was switched from OFF to ON 15 min before RV fault is defined when ICT decreases more tha...

Page 43: ...T R C sensor in I FEEL mode c Indoor Coil Temp is detected by ICT d Outdoor Coil Temp is detected by OCT 11 4 2 Control Functions a COMP Operation ON OFF RT SPT 0 1 COMP b OFAN Operation In normal ope...

Page 44: ...Revision 0 11 9 11 4 3 Sequence Diagrams a Maintaining room temp at desired level by comparing RT and SPT with user defined IFAN speed RT SPT oc 3 2 1 0 1 2 ON OFF ON OFF USER FAN SPEED ON OFF COMP WV...

Page 45: ...CONTROL SYSTEM 11 10 Revision 0 b Maintaining room temp at desired level by comparing RT and SPT with AUTO IFAN RT SPT o c 4 3 2 1 0 1 2 ON OFF ON OFF H L M ON OFF COMP WVL OFAN IFAN RV...

Page 46: ...ill be switched ON according to the following graph NOTE 1 When COMP is ON except WAX Model IFAN will change from LOW to OFF either when a ICT 28 and IFAN is on for 5 min or longer Or b ICT 20 NOTE 2...

Page 47: ...rules for Heaters in RC group a Heaters can be enabled only if IFAN is ON b Heaters will operate according to T and the following graph 32 20 20 15 50 ON OFF ICT 45 HE 1 HE 2 General Window 3 Rules f...

Page 48: ...Operation for RC and SH groups 1 As a general rule for RC and SH groups excluding protection modes OFAN starts with the compressor 2 When OFAN is ON it will operate according to the following conditio...

Page 49: ...HEAT AUTO at heating Temp Selected desired temperature Fan HIGH MED LOW Timer Any I FEEL ON or OFF 11 6 1 Sequence Diagram Maintains room temp at desired level by comparing RAT or RCT to SPT RT SPT o...

Page 50: ...ofan Mode HEAT AUTO at heating Temp Selected desired temperature Fan AUTO Timer Any I FEEL ON or OFF 11 7 1 Sequence Diagram Maintains room temp at desired level by controlling COMP IFAN and OFAN RT S...

Page 51: ...TO at Heating Temp Selected desired temperature Fan HIGH MED LOW Timer Any I FEEL ON or OFF 11 8 1 Sequence Diagram Maintains room temp at desired level by controlling Heating Elements HE1 or HE2 RT S...

Page 52: ...HEAT AUTO at Heating Temp Selected desired temperature Fan AUTO Timer Any I FEEL ON or OFF 11 9 1 Sequence Diagram Maintains room temp at desired level by controlling the 2 Stage Electric Heaters RT S...

Page 53: ...SPT 1O C or SPT 1O C respectively d For RC SH units Mode change between Auto Heat Auto Cool Modes is possible only after the COMP has been OFF during the last T minutes Mode Change Time T Auto Cool to...

Page 54: ...r SH Groups Maintains room temp at desired level by selecting between cooling and heating modes RT SPT oc 3 2 1 0 1 2 3 4 ON OFF ON OFF H M L OFF ON OFF ON OFF COMP OFAN HE1 HE2 IFAN RV USER FAN SPEED...

Page 55: ...L 30 sec COMP OFAN HE1 HE2 IFAN RV OFF 3 min 2 Auto Heat Mode Auto Cool Mode Auto Heat Mode 1 3 min 2 11 11 Dry Mode 11 11 1 Dry ST or RC Group or P2000 Model with Any Group Settings Mode DRY Temp Se...

Page 56: ...han the 3 min Min COMP OFF time after every 15 min of continuous COMP operation 2 When DRY is OFF the COMP is forced ON for 6 min longer than the 3 min Min COMP ON time after every 15 min of continuou...

Page 57: ...ure Fan LOW automatically selected by software Timer Any I FEEL Any Control function Reduces room humidity with minimum temp fluctuations by operating in Cool Mode with LOW speed IFAN and HE RT SPT o...

Page 58: ...Fan Any Timer Any I FEEL ON or OFF Control Function Protects the indoor coil from ice formation at low ambient temperatures ICT o c 2 ON OFF ON OFF t1 t2 t3 COMP OFAN 1 5 14 0 1 ON OFF IFAN t1 t1 5 m...

Page 59: ...ED 52 55 61 66 L COMP is forced OFF OFAN is forced ON IFAN forced to LOW 68 OFAN follow operation of COMP COMP is forced OFF OFAN is forced ON For all models except WAX P2000 For WAX P2000 models NOTE...

Page 60: ...min Overflow when unit is ON Overflow when unit is OFF 1 min Notes 1 The switch used for water level detection is closed under normal condition and is open when water overflow 2 For the NEC version of...

Page 61: ...rom ice formation by controlling COMP RV operation 1 Deicer Activation Algorithm a Static deicer threshold is 5 C b Dynamic deicer threshold changes of 3 C in 3 minutes in the OCT temperature c In fir...

Page 62: ...ANY all SH units except WAX RC or WAX units HEs are forced OFF IFAN is forced to Low Speed BLINK ON OPER LED NOTES 1 In the following Deicing cycles the time interval between two Deicing cycles activ...

Page 63: ...G Fan Any Timer Any I FEEL ON or OFF Control Function Protects the compressor from high pressure by switching OFF the OFAN and COMP ICT o c Any Off Any Off COMP OFAN 52 55 61 66 COMP is forced OFF 67...

Page 64: ...schedule is disabled 2 The forced operation is activated when the mode button on the Display Board is used to switch the unit to COOL or HEAT mode 3 The IFAN is always set to Autofan Speed in forced...

Page 65: ...e from 0 to 3o C In other modes there is no SPT adjustment The SPT adjustment is cancelled when the Sleep mode is cancelled SPT Time Hr 4 8 5 3 2 6 Start Sleep 7 RT SPT 1 SPT 2 SPT 3 SPT 2 SPT 1 SPT 3...

Page 66: ...starting of Sleep the Sleep time is extended And instead of going to SB at the 7th hour the A C will work until reaching the Off time Case 3 is an exception to case 2 The Sleep Mode will not be extend...

Page 67: ...OR FAN SPEED TEST SELF TEST FLOW CHART Step 1 Step 2 Step 3 FOR CONTROLLER VERSION 4V5 OR HIGHER COOL HEAT COMPRESSOR OUTDOOR FAN R V LOW MEDIUM HIGH TIMER OPERATE STANDBY BUZZER TEST ONE BEEP SOUND R...

Page 68: ...the remote control IR transmitter and change the temperature settings If the display indoor unit receive the settings properly the following steps will start c STEP 3 MODEL SETTING CONFIRMATION 1 The...

Page 69: ...lly f STEP 5 FREQUENCY TESTING If the frequency measuring process fails the COOL LED will turn ON In order to move to the next step press ON OFF button on the remote control g STEP 6 INPUT TEST The te...

Page 70: ...lues of Sensors Temperature VS Voltage DC Temp C Voltage V Temp C Voltage V Temp C Voltage V Temp C Voltage V 20 4 554 2 3 744 24 2 555 46 1 487 19 4 529 3 3 695 25 2 5 47 1 447 18 4 502 4 3 646 26 2...

Page 71: ...to the following table No Problem 1 2 3 4 5 1 RT1 is disconnected 2 RT1 is shorted 3 RV fault 4 RT2 is disconnected 5 RT2 is shorted 6 Reserved 7 RT2 temp reading doesn t change 8 RT3 is disconnected...

Page 72: ...r 5 Indoor fan works when unit is OFF and indoor fan speed is not changed by remote control command PCB problem Replace controller 6 Compressor does not start Electronics control problem or protection...

Page 73: ...sent Wrong phase order to compressor Check compressor phase order 13 Water leakage from indoor unit Indoor unit drainage tube is blocked Check and open drainage tube 14 Freezing of outdoor unit in HEA...

Page 74: ...EXPLODED VIEWS AND SPARE PARTS LIST Revision 0 13 1 13 EXPLODED VIEWS AND SPARE PART LISTS 13 1 Exploded view of Indoor unit K XLN24 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16...

Page 75: ...EXPLODED VIEWS AND SPARE PARTS LIST 13 2 Revision 0 17 18 19 20 25 26 21 22 23 24 27 28 32 29 31 33 34 30 35...

Page 76: ...Cover1 1 5 2114200005 E Parts Box Cover2 1 6 2114200008 E Parts Box Ass y 1 7 4523278 Room Temperature Sensor Ass y 1 8 2224200052 Receive Water Ass y 1 9 2224200050 Evaporator Base Ass y 1 10 4523277...

Page 77: ...ille 2 22 8144200001 Switch cover air inlet grille 1 23 2114200020 Air inlet grille 1 24 8141990001 Hanger for panel assmy 4 25 2114200011 Control box 1 26 2114200007 LED holder 1 27 4523483 Display P...

Page 78: ...EXPLODED VIEWS AND SPARE PARTS LIST Revision 0 13 5 13 3 Exploded view of outdoor unit ONG...

Page 79: ...EXPLODED VIEWS AND SPARE PARTS LIST 13 6 Revision 0...

Page 80: ...ater 1 16 4517345 COMPRESSOR WIRE ASSY 1 17 452892100 Heater for compressor 1 18 4516766 PAINTED VALVE PLATE ASSY 1 19 4526513 LOW PRESS VALVE R410A 1 20 4526514 Hight press valve R410A 1 21 452891100...

Page 81: ...1 20 4526513 LOW PRESS VALVE R410A 1 21 4526514 Hight press valve R410A 1 22 452891100 Filter assy 1 1 23 452891200 Filter assy 2 1 24 4523145 R lifter 1 25 452891600 Single way welding assy 1 26 452...

Page 82: ...without notice Photos non contractual A C E Marketing FRANCE 1 bis Avenue du 8 Mai 1945 Saint Quentin en Yvelines 78284 GUYANCOURT Cedex T l 33 1 39 44 78 00 Fax 33 1 39 44 11 55 www airwell com 1 bis...

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