Cooper & Hunter CHV-5S224SNMX Service Manual Download Page 2

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CONTENTS

PRODUCT ................................................................................................................ 2

1 PRODUCT LIST .............................................................................................................................. 2

2 PRODUCT FEATURES..................................................................................................................... 2

3 SPECIFICATIONS............................................................................................................................ 4

4 PRODUCT CAPACITY CORRECTION ............................................................................................... 5

5 PRINCIPLE OF OPERATION............................................................................................................ 7

CONTROL .............................................................................................................. 10

1 UNITS CONTROL ......................................................................................................................... 10

2 WIRED CONTROLLER .................................................................................................................. 18

3 REMOTE CONTROLLER ............................................................................................................... 44

INSTALLATION ....................................................................................................... 49

1 TOOLS AND EQUIPMENT FOR INSTALLATION AND MAINTENANCE .......................................... 49

2 INSTALLATION KEY POINTS AND IMPORTANCE ......................................................................... 51

3 INSTALLATION MATERIALS SELECTION ....................................................................................... 53

4 INSTALLATION OF OUTDOOR UNIT............................................................................................ 56

5 INSTALLATION OF INDOOR UNIT ............................................................................................... 60

6 EXCURSUS................................................................................................................................... 70

MAINTENANCE...................................................................................................... 73

1 TROUBLE TABLE .......................................................................................................................... 73

2 FLOW CHART OF TROUBLE SHOOTING ...................................................................................... 77

3 POWER DISTRIBUTION ............................................................................................................... 92

4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS .................................................... 96

5 COMMON MAINTENANCE ....................................................................................................... 112

6 EXPLODED VIEW OF UNIT AND PARTS LIST .............................................................................. 117

Summary of Contents for CHV-5S224SNMX

Page 1: ...CHV5 COMPACT MULTI VRF UNIT SERVICE MANUAL R410A 50 60Hz...

Page 2: ...LS AND EQUIPMENT FOR INSTALLATION AND MAINTENANCE 49 2 INSTALLATION KEY POINTS AND IMPORTANCE 51 3 INSTALLATION MATERIALS SELECTION 53 4 INSTALLATION OF OUTDOOR UNIT 56 5 INSTALLATION OF INDOOR UNIT 6...

Page 3: ...1 PRODUCT CHV5 COMPACT MULTI VRF UNIT SERVICE MANUAL PRODUCT...

Page 4: ...ct series All DC Inverter VRF outdoor units R410A are based on C H DC Inverter compressor technology and special designed for the residential apartments commercial offices and super markets And the ca...

Page 5: ...s improved 10 times of 485 communication The communication between indoor and outdoor unit is up to 20Kbps which has increased by 100 and date exchange is faster Multi group network it is easy to exte...

Page 6: ...ions Model CHV 5S224SNMX CHV 5S250SNMX CHV 5S280SNMX Product Code CN850W0200 CN850W0210 CN850W0190 Cooling Capacity KW 22 4 25 28 Heating Capacity KW 25 28 30 Air Flow V olume m 3 h 9000 9000 9000 Sou...

Page 7: ...sted in the semi anechoic room so it should be slightly higher in the actual operation due to environmental change Rated conditions Cooling Indoor air temperature27 81 DB 19 66 6 WB Outdoor air temper...

Page 8: ...length and height difference 1 Symbol description Hp Height difference in case indoor unit is below outdoor unit m Hm Height difference in case indoor unit is above outdoor unit m L Length of one way...

Page 9: ...each indoor heat exchanger will be merged and inhaled by the compressor and then become high temperature and high pressure gas which will later be discharged into outdoor heat exchangers By exchangin...

Page 10: ...e Heat exchanger Gas liquid separator Compressor1 Oil balance Indoor side Indoor electronic expansion valve Indoor electronic expansion valve Stop valve Heat exchangeer Heat exchangeer Oil return vavl...

Page 11: ...0 900 CONTROL CHV5 COMPACT MULTI VRF UNIT SERVICE MANUAL CONTROL...

Page 12: ...board of the same indoor unit Address dial up of different indoor unit must vary Multi VRF indoor unit is applicable to all digital or inverter outdoor units Controller of outdoor unit falls into two...

Page 13: ...nsor compressor casing top temp sensor high pressure sensor and low pressure sensor Switch protection high pressure protection over current protection Output control objects fan frequency compressor h...

Page 14: ...part of control system Receiving commands from the main control board the drive board can transform 380V 50Hz 3 phase commercial power into AC power with adjustable amplitude and frequency capable to...

Page 15: ...3 Minut es Yes No No Temperature Adjustment A Cooling Operation Fan Motor Operation Guide Louver Electronic Expansion Valve Capacity Control Electronic Expansion Valve Close Fan Motor Stop Yes No Air...

Page 16: ...nut es No No Temperature Adjustment A Guide Louver Electronic Expansion Valve Capacity C ontrol Electronic Expansion Valve Close Fan Motor Stop Yes No In The Operation Of Defrosting Electronic Expansi...

Page 17: ...an running at low speed Cooling Operation Cooling running Is compressor being protected No B Is startup being initialized 4 way valve stop Outdoor fan cooling control mode Outdoor electronic expansion...

Page 18: ...Yes No The electronic expansion valve initialized Is protection device operating Is abnormality Indicator of outdoor unit is bright Abnormality indicator of outdoor unit bright Press the run stop swit...

Page 19: ...pen Outdoor fan protection control mode Compressor protection control Electronic expansion valve of outdoor unit capacity control 4 way valve reverse Outdoor fan defrost control Compressor initial def...

Page 20: ...CONTROL 0 18 0 CHV5 COMPACT MULTI VRF UNIT SERVICE MANUAL 2 WIRED CONTROLLER 2 1 Control panel 1 LCD Display Instruction...

Page 21: ...5 It shows the setting temperature value In case the wired controller is controlling a Fresh Air Indoor Unit then the temperature zone will display FAP 6 Cooling mode 7 Dry mode 8 Fan mode 9 Heat mode...

Page 22: ...hild Lock status 31 One wired controller controls multiple indoor units 32 Save status of indoor unit 33 It indicates the current wired controller is the slave wired controller address of wired contro...

Page 23: ...ong auto low speed low medium speed medium speed medium high speed high speed and turbo status 6 Mode Switch Auto Cooling Dry Fan Heating Floor Heating 3D Heating and Space Heating modes for indoor un...

Page 24: ...ions No 1 2 3 Name Panel of Wired Controller Screw M4X25 Base plate of Wired Controller Quantity 1 3 1 Selection requirement of Communication wire Material Standard Sectional area d mm Length L m Rema...

Page 25: ...another remote controller from neighborhood Connection requirement There are 4ways to connect wired controller with indoor units network Fig 1 One wired controller controls multiple indoor units simul...

Page 26: ...controllers control one indoor unit Wiring instructions 1 When one wired controller controls multiple indoor units simultaneously the wired controller can connect to any one indoor unit but the connec...

Page 27: ...one or two wired controller s control s multiple indoor units at the same time the controlled indoor unit s setting should be the same 5 Wiring of wired controller and indoor unit network must be acc...

Page 28: ...eried in power on of power off status 1 Press and hold the FUNCTION button for five seconds to enter the user parameter query interface The temperature area display C00 and CHECK is on 2 Select a para...

Page 29: ...ature sensor after replenishment C08 Prompt time query for air filter cleaning 4 416 days Timer area displays the prompt time query for air filter cleaning C09 Wired controller address query 01 02 Tim...

Page 30: ...function of wired controller is disabled neither the master nor slave wired controller can receive remote signals The wired controller can only be operated by pressing P13 Wired controller address set...

Page 31: ...ng P37 Cooling setting temperature in automatic mode 17 30 25 Cooling setting temperature heating setting temperature 1 Note The two settings are still valid in remote shielding status P38 Heating set...

Page 32: ...o the model of indoor unit Only in master indoor unit that AUTO mode can be set Under the AUTO mode when the indoor unit is cooling and will be on when the indoor unit is heating and will be on 3 Temp...

Page 33: ...can set fan speed circularly as Note Under the DRY mode the fan will be kept running at the low speed and the fan speed isn t adjustable 5 Timer setting The wired controller is equipped with two kinds...

Page 34: ...n to save the setting and then exit setting c Clock Timer Unit On Off at a certain time can be set throughclock timer Set Timer 1 Press TIMER button to enter timer on setting and the ON icon is blinki...

Page 35: ...on increases or decreases timer time by 1min holding or button for 5s increases or decreases timer time by 10min Clock Timer setting is shown as follow 6 Swing Setting In unit on status up down swing...

Page 36: ...right swing When left right swing is activated left right swing icon will be bright Cancel left right swing When left right swing is activated press FUNCTION button to switch to left right swing with...

Page 37: ...urve to provide comfortable sleep environment Turn on off Sleep Function in unit On status press SLEEP button to tactivate or cancel Sleep function When Sleep function is activated icon is bright and...

Page 38: ...ch can be adjusted by pressing or button The adjustment range is 1 10 Press ENTER CANCEL button to turn on Air function Turn off Air Function When Air function is on press FUNCTION button to select Ai...

Page 39: ...conditioner can be operated in small temperature range by setting the minimum temperature under Cooling and Dry modes and setting maximum temperature under Heating 3D Heating and Space Heating modes T...

Page 40: ...ce abnormal protection bacteria gathering etc Turn on Filter Clean Reminder Function When unit is on press FUNCTION button and select Filter Clean Reminder icon will blink Press or button to adjust th...

Page 41: ...vel Description of Levels Turn off Clean Reminder Timer zone shows 00 Slight Pollution The former digit shows 1while the latter one shows 0 which indicates the accumulating operating time is 5500 hour...

Page 42: ...ating mode press FUNCTION button to select Out icon will blink Then press ENTER CANCEL button to turn on this function Turn off Out Function When this function is on press FUNCTION button to select Ou...

Page 43: ...Unit High Pressure Protection when unit is on is shown as follow 2 5 1 Table of Error Codes for Outdoor Unit Display Code Content Display Code Content Display Code Content E0 Malfunction of outdoor u...

Page 44: ...nit J4 Overcurrent protection for compressor 4 bC Loose protection for casing top temperature sensor for compressor 1 F1 Malfunction of high pressure sensor J5 Overcurrent protection for compressor6 b...

Page 45: ...y tube temperature sensor dE Malfunction of indoor C02 sensor L7 No main indoor unit d6 Malfunction of exit tube temperature sensor db Special code engineering debugging code L8 Insufficient power sup...

Page 46: ...ter inquiry of compressor AJ Cleaning alarm for filter A2 Refrigerant recovery AU Long distance emergency stop A3 Defrosting Ab Emergency stop A5 On line test Ad Limit opereation 3 REMOTE CONTROLLER 3...

Page 47: ...on 5 HEAT Set heating function 6 SWING Set swing status 7 TURBO Set turbo function 2 Button name and function introduction inside No Button name Function 1 MODE Set operation mode 2 TIMER ON Set timer...

Page 48: ...ht or any place where is very hot 4 The remote control signal can be received at the distance of up to about 10m 5 Don t let any liquid flow into the remote control For duct type of indoor unit the wi...

Page 49: ...9 X FAN Set X FAN function 10 TIMER ON Set timer on function 11 TIMER OFF Set timer off function 12 SAVE Set energy saving function 13 SLEEP Set sleep function 14 LIGHT Set light function 15 CLOCK Set...

Page 50: ...INSTALLATION 0 48 0 CHV5 COMPACT MULTI VRF UNIT SERVICE MANUAL INSTALLATION...

Page 51: ...5 The recommended equipment for filling R410A Refrigerant storage tank Fig 6 It must confirm the type of refrigerant before filling liquid refrigerant is filled usually Thermistor vacuum gauge Fig 7 I...

Page 52: ...CE MANUAL Refrigerant cleaner Fig 23 Refrigerant recovery equipment Collector Fig 24 Fig 5 Fig 4 Fig 7 Fig 6 Fig 8 Fig 9 Fig 10 Fig 11 Fig 12 Fig 13 Fig 14 Fig 15 Fig 16 Fig 17 Fig 18 Fig 19 Fig 20 Fi...

Page 53: ...efrigeration system Pipes are more likely to be blocked air conditioning performance is reduced compressor wear is increased or even hinder the normal operation of the system and burn the compressor 2...

Page 54: ...ne of air channel is not reasonably manufactured Uneven air quantity allocation reduces the overall performance of the air conditioner 14 The refrigerant pipe or condensate water pipe does not meet th...

Page 55: ...rt or severe oxide film and without obvious scratch pit spot and other defects 3 Test report Certifications and quality test reports must be provided 4 The tensile strength must be at least 240 kgf mm...

Page 56: ...ed twisted pairs must be used as the communication cables between IDUs and between the IDU and ODU The communication wire between indoor unit and wire controller Material Length L m Sectional area mm...

Page 57: ...aker capacity and power cord specification for every indoor unit Indoor unit Capacity of circuit breaker A Min sectional area of grounding wire mm2 Min sectional area of power cord mm2 Wall mounted ty...

Page 58: ...ing oxygen 4 Read this manual carefully before installation 4 2 Selection of installation site 1 Select a location which is strong enough to hold unit s weight so that unit can stand still and erect 2...

Page 59: ...unlight T he rain and condensation water can be drained out smoothly T he outdoor unit will not be embedded by the snow and not affected by garbage and oil smog T he installation of outdoor unit shall...

Page 60: ...C CHV 5S224SNMX 1098 427 1584 CHV 5S250SNMX 1098 427 1584 CHV 5S280SNMX 1098 427 1584 2 Mounting hole physical dimension mm 3 Use M12 bolt to fix up the chassis of the units when installing units 4 A...

Page 61: ...0 59 INSTALLATION CHV5 COMPACT MULTI VRF UNIT SERVICE MANUAL Obstructions in the air inlet No obstructions above the unit Obstructions above the unit ii Obstructions in the air outlet...

Page 62: ...A 0 L 1 2H 600 1 2H L H 1400 5 Outdoor unit should be installed on the beton chassis of 10cm thickness 5 INSTALLATION OF INDOOR UNIT 5 1 Installation of cassette type indoor unit 5 1 1 4 way cassette...

Page 63: ...A B C D E G H 950 890 840 680 780 65 210 CHV 5SC56NK CHV 5SC63NK CHV 5SC71NK CHV 5SC80NK mm A B C D E G H 950 890 840 680 780 65 260 CHV 5SC90NK CHV 5SC100NK CHV 5SC112NK CHV 5SC125NK CHV 5SC140NK mm...

Page 64: ...ance of lifting screw 1115 ceiling outlet 261 distance of lifting screw 385 main body 415 ceilding outlet 456 decorative panel Istallation dimensions mm 1500 1500 1800 23 141 178 197 Wall Ceiling Floo...

Page 65: ...5SD25NK CHV 5SD28NK CHV 5SD32NK CHV 5SD36NK mm A B C D E F G H I 742 491 700 615 200 121 528 161 580 CHV 5SD40NK CHV 5SD45NK CHV 5SD50NK mm A B C D E F G H I 942 491 900 615 200 121 728 161 780 CHV 5S...

Page 66: ...mm A B C D E F G H I J 1236 565 1200 655 260 222 1016 220 1050 695 CHV 5SD90NK CHV 5SD100NK CHV 5SD112NK CHV 5SD125NK CHV 5SD140NK A T mm A B C D E F G H I J 1379 565 1340 655 260 207 1153 220 1188 7...

Page 67: ...F CHV 5SDS22NK CHV 5SDS25NK CHV 5SDS28NK CHV 5SDS32NK CHV 5SDS36NK mm A B C D E F 760 415 710 200 450 475 CHV 5SDS40NK CHV 5SDS45NK CHV 5SDS50NK CHV 5SDS56NK CHV 5SDS63NK mm A B C D E F 1060 415 710...

Page 68: ...Pipe Liquid Pipe Drainage Pipe Electric Box Air Intake Max Max CHV 5SDH56NK CHV 5SDH63NK CHV 5SDH71NK CHV 5SDH80NK mm A B C D E F G H I J 1101 517 820 1159 1271 558 1002 160 235 268 CHV 5SDH90NK CHV...

Page 69: ...24NK mm A B C D E F 1353 632 992 1150 192 327 CHV 5SDH280NK mm A B C D E F 1563 706 992 1350 192 402 Space Dimension for Installation mm 2 5 0 2 5 0 2 5 00 Nut with Washer Nut Spring Washer 5 3 Instal...

Page 70: ...158 280 700 CHV 5SF63NK CHV 5SF71NK CHV 5SF90NK mm A B C D H 1420 245 1354 280 700 CHV 5SF112NK CHV 5SF125NK CHV 5SF140NK mm A B C D H 1700 245 1634 280 700 Space Dimension for Installation mm 1 Floor...

Page 71: ...SW45NK CHV 5SW50NK mm W H D 940 298 200 CHV 5SW56NK CHV 5SW63NK CHV 5SW71NK mm W H D 1008 319 221 Installation space mm 5 5 Installation notice 1 Installation dimension refer to the outline dimension...

Page 72: ...tallation must be done by professionals according to national and local laws and regulations The unit must be grounded reliably Please connect wire according to the wiring diagram on the unit 6 EXCURS...

Page 73: ...ining and leak detection Communication Cables Connection Power Cord Connection Power Cord Connection Drain Pipe Installation Heat insulation Connecting the indoor unit and outdoor Pressure maintaining...

Page 74: ...MAINTENACE 0720 CHV5 COMPACT MULTI VRF UNIT SERVICE MANUAL Maintenace...

Page 75: ...d6 Malfunction of indoor humidity sensor d7 d7 d7 Malfunction of jumper d9 d9 d9 Malfunction of outdoor ambient temperature sensor b1 b1 b1 Malfunction of defrosting temperature sensor b3 b3 b3 Malfu...

Page 76: ...n malfunction between indoor and outdoor units indoor unit s wired controller C0 C0 C0 Communication malfunction between main controller and inverter compressor driver C2 C2 C2 Phase lacking protectio...

Page 77: ...ion Indoor unit 3 8 PFC protection Limited frequency reduction for power protection Indoor unit 4 9 Low voltage protection Limited frequency reduction for discharge temperature protection Indoor unit...

Page 78: ...erature sensor of compressor 2 Indoor unit 17 22 Over loading for compressor2 Indoor unit 18 23 Discharge protection for compressor1 Indoor unit 19 24 Demagnetization protection for compressor2 Indoor...

Page 79: ...rive board are powered on Check if the communication line between the main control board and the compressor drive board is connected well Replace the main control board and see if the error is elimina...

Page 80: ...work normally Check if the indoor outdoor filters or radiating fins are dirty or blocked High pressure protection Measure if the pressure switch is normal Replace the mainboard of outdoor unit Replace...

Page 81: ...on valve can work normally Check if the indoor outdoor filters or radiating fins are dirty or blocked The system pipe is blocked Refer to low pressure sensor error Add refrigerant according to the nom...

Page 82: ...e of compressor is higher than 110 Whether compressor reduces its capacity Check if the capacity output of outdoor unit is equal to the capacity demand of indoor units Exhaust Temperature Protection M...

Page 83: ...is blocked Measure if the resistance of temperature sensor is correct Measure if the pressure switch is normal Replace the corresponding exhaust temperature sensor Replace the mainboard of outdoor un...

Page 84: ...line are mounted with magnetic ring Check if the outdoor unit is electrically powered If the address codes of indoor units in the same system are repeated If the address code of wired controller comp...

Page 85: ...the water flow is smooth If the drainage pump is running Fault display If the voltage of liquid level switch terminal is correct Replace the mainboard of indoor unit If the voltage of drainage pump te...

Page 86: ...e sensor error If the plug on temperature sensor is correctly connected to the socket on mainboard Remove the temperature and measure if its resistance is within normal range Replace the mainboard of...

Page 87: ...rrectly connected to the socket Measure if the output value DC voltage of the outdoor mainboard socket is normal Replace the mainboard of outdoor unit Replace the high pressure sensor Check the orient...

Page 88: ...unit and mainboard Is power supply of wiring board L and N 220V Is air switch turned ON Is input of filter board energizing Is output of filter board energizing Is power supply of wiring board normal...

Page 89: ...ce the compressor drive board Check if the screws have been fastened and if the coolant have been applied to the IPM module It is finished YES NO 2 13 DC Bus High Voltage Protection DC Bus High Voltag...

Page 90: ...n 320V Replace the compressor drive board Adjust the voltage to 380V and then see if the error is eliminated It is finished YES NO NO 2 15 Open Phase Protection Connect the power cord properly and see...

Page 91: ...Connect the power cord properly and see if the error is eliminated NO NO YES 2 17 Desynchronizing protection of inverter compressor Whether the sequence of wire for compressor is correct Whether the w...

Page 92: ...on of jumper Check whether the jumper is connected Connect the jumper Check whether the code of jumper is correct Connect the correct jumper Check whether the jumper is inserted tightly Insert the jum...

Page 93: ...unning for a period of time then check if the screws of the IPM module are tightened Check if the connection of the power cards of the main board and the drive board is in good condition If the screws...

Page 94: ...distribution Note The thick line represents power line while thin line represents the control line Power Supply Filter Plate Commutated bridge Drive board Compressor Compressor Main board Fan Indoor U...

Page 95: ...lectric appliances such as TV Drive Board Drive board is the control board of DC inverter compressor which provides the control signal of changeable voltage current frequency for compressor Main Board...

Page 96: ...T MULTI VRF UNIT SERVICE MANUAL Commutated bridge It is used to transform the three phase AC input power into DC power Reactor It is used to reduce the current harmonics and effectiviely restrain the...

Page 97: ...IT SERVICE MANUAL 3 3 Wiring diagram Note This drawing is just for reference please always refer to the electric wiring stuck to the unit for actual wiring CHV 5S280SNMX CHV 5S250SNMX CHV 5S224SNMX 4Y...

Page 98: ...It sucks low temperature and low pressure gas compress it to high temperature and high pressure gas and then discharge it Heat Exchanger Used for heat exchange between refrigenrant and flow air 4 way...

Page 99: ...pressor protection and other control functions Oil Separator It stays between discharge outlet of compressor and inlet of condenser It used for separating the lubricant oil of compressor when the high...

Page 100: ...MULTI VRF UNIT SERVICE MANUAL Fan Motor Strengthens heat exchanging One way vavle Controls refrigenrant flow direction Cut off V avle It used for connecting indoor unitand outdoor unit and used for m...

Page 101: ...ve top cover Loose the screws fixing the top cover with screwdriver Hold the top cover upwards and then put it on the floor flatly 2 Remove front side plate sub assy Loose the screw fixing the front s...

Page 102: ...oval operation for blade Remark Before removing the motor please make sure that the unit is disconnected with the power Process Photo Operation Instruction 1 Remove grille Loose screws fixing the pane...

Page 103: ...ade with wrench Then remove the blade and put it on the floor flatly 4 Remove motor Loose screws fixing the motor with screwdriver Then remove the power cord of motor Take out the damaged motor 5 Inst...

Page 104: ...r of compressor Loose screws fiixng the compressor with screw driver Then pull out the power cord Note When removing the power cord make marks for different color power cords and corresponding wiring...

Page 105: ...move the chassis from compressor Take out the compressor and replace it Note When replacing the compressor do not damage nearby pipelines and other parts 5 Fix the new compressor on the base After rep...

Page 106: ...Loose screws fixing the power cord with screw driver conenct the power cord well again Note When connecting the power cord make marks for different color power cords and corresponding wiring terminals...

Page 107: ...coil of 4 way valve from the 4 way valve Remove the coil of 4 way valve at first 2 Disconnect the 4 way valve and connection pipeline Weld those 4 connection spots on 4 way valve and then pull out th...

Page 108: ...pe system and that the power has been cut off Process Photo Operation Instruction 1 Disconnet the electronic expansion valve and the conneting pipe Remove the coil of electroc expansion valve at first...

Page 109: ...e that there is no refrigerant inside the pipe system and that the power has been cut off Process Photo Operation Instruction 1 Disconnet the oil separator and the conneting pipe Remove the oil separa...

Page 110: ...or Tighten the screws fixing the oil separator with screwdriver 5 Replace oil separator Weld the connection position between oil separator and pipeline Note During welding process do not let flame bur...

Page 111: ...e the electric box assy Remove the electric box assy 2 Remove the reactor Remove the reactor Dismantle the installation supporting frame 3 Disconnet the gas liquid separator and the conneting pipe Rem...

Page 112: ...separator with screwdriver 5 Replace the gas liquid separator Replace the gas liquid separator 6 Mount the gas liquid separator Tighten the screws fixing the gas liquid separator with screwdriver Loo...

Page 113: ...and pipeline Note During welding process do not let flame burn out other parts 8 Install the reactor Tighten the Installation supporting frame Install the reactor 9 Install the electric box assy Inst...

Page 114: ...n is charged to reach 25 0kgf cm 2 and remains at the pressure for 48h After that check the reading of pressure gauge and the pressure drop calculated according to the following formula should not be...

Page 115: ...unitl the water is drained out completely e After evacuation close the regulating valve and 1 hour later check if its pressure goes up or not 2 Notices a V acuum pump for the gas pipe and liquid valv...

Page 116: ...or sand hole may be found Increase pressure to test pressurem keep it for 24h and observewhether the pressure is decreasing If not the pressure is qualified 5 3 3 Cautions a The test manometer range...

Page 117: ...45m 6 35 D b c d 5 10 10 10 35m L 9 52Length of liquid pipe 1 6 4 Length of liquid pipe 0 4 45 1 35 0 4 59m LA L 50 59 50 9 m Additional volume of refrigerant R LA 54 9 54 486 g b Operation procedure...

Page 118: ...ooling liquid pipe preciously for the precision refrigerant charing volume c2 Measure the additional refrigerant volume preciously c3 R410AInvert to charge the R410A for ensuting the liquid charging c...

Page 119: ...I VRF UNIT SERVICE MANUAL Notice Equivalent length Length of farthest fitting pipe Equivalent length of brance 0 5m 6 EXPLODED VIEW OF UNIT AND PARTS LIST 1 Model CHV 5S224SNMX Exploded view and parts...

Page 120: ...MAINTENACE 01180 CHV5 COMPACT MULTI VRF UNIT SERVICE MANUAL...

Page 121: ...13 Cabinet 1 01514100003P 14 Front Side Plate 1 01314100026P 15 Handle apricot gray 3 26235253 16 Axial Flow Fan primary color 2 10335010 17 Electromagnetic Valve 5 43000054 18 Magnet Coil 1 430004003...

Page 122: ...78 37 4 way Valve SHF 20A 46 DSF 20 R410A 1 43000338 38 Sensor Hign Pressure 1 322101032 39 Oil Separator 1 07424100027 40 Gas Luquid Separator 1 07424100030 41 Sensor Low Pressure 1 322101002 42 Cabl...

Page 123: ...0 121 MAINTENACE CHV5 COMPACT MULTI VRF UNIT SERVICE MANUAL 2 Model CHV 5S250SNMX CHV 5S280SNMX Exploded view and parts list of outdoor uint...

Page 124: ...7 Electromagnetic Valve 5 43000054 18 Magnet Coil 1 4300040032 19 Current Divider Y pipe 1 03410101 20 Electrical Heater Compressor 2 76518732 21 Cut off Valve 3 8 R410A 1 07330000002 22 Cut off Valve...

Page 125: ...or 1 07424100030 41 Sensor Low Pressure 1 322101002 42 Cable Cross Loop 1 76515202 43 Strainer Bidirection Strainer 1 07220019 44 Fan Motor SWZ150B 2 1570280201 45 One Way Valve 1 07130101 46 Tube Cip...

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