3.2 R410A D3 service manual 2 Outdoor Units 2nd
Contents
1. n 000mm 600mm 3 6 Outdoor units are lower than the surrounding obstacles If the outdoor units are lower than the surrounding obstacles in order to ensure an effective heat exchange a conduit is strongly recommended to help the heat emission and avoid the discharging air Outdoor Units Piping Diagram MCAC DTSM 2006 01 being absorbed into the system again The conduit is made on the installation spot with the height HD H h Note Because the outdoor fan motor have no enough static pressure the Max Length should be less than 3meters 1000mm 1000mm a 000mm 3 7 When there are obstacles above the outdoor unit Front view E Side view z oF gt 45 i p a 300mm gt gt 1000mm Kj Airflow deflector Front view ja o Front view ae P PE PP EP OE oS OF Lo e d L a Fa The top of any pile around the outdoor unit should be at least 800mm below the unit top unless there is mechanism for air discharging 4 Piping Diagrams 4 1 Refrigerant System Diagram There s no constant speed compressor F2 inthe 8 10 12HP system 4 2 Function of key parts SI1 when the operating mode of A C system changes turn the flow direction of the refrigerant 2 change the heat exchanger area according to the load in cooling mode EXV agjust the refrigerant flux SV1 when there re mo2. Four way valve when starting heating mode main four way valve ST1 turn direction after the compressor has worked for 55s when the capacity demanded by the indoor unit is less than 12 the auxiliary four way valve ST2 turn direction edd gt sli Liquid side EKV 09 EXV 5 V O c Gas side i i i 9V2 MS T A sky balance den 2 gt k Gas balance Outdoor Units 131 5 2006 01 MDV D280W CSN1 MDV D335W CSN1 iagrams D 5 Wiring Diagrams MDV D252W CSN1 iring ME MCCC i c Ax ccc cci i M ed 2209999026 WIRING DIAGRAM OUTDOOR UNIT SW CAPACITY SW2 ADDRESS pu pa p 3 T 2 quest 3 HEAT DART ejejeje GN B C YE GN A Nd go p 3 XM OUT DOOR POWER TO OUT DOOR UNIT TO INDOOR UNIT Ss 5 2 5 2 5 4 5 5 COMMUNICATION BUS COMMUNICATION BUS 7 1 77 001 n PRO 1 CODE PART NAME CONP DIGITAL DIGITAL COMPRESSOR x xl gt lt L PRO ie Lo
3. Units 132 2 e _ S E a a _ T v T Fi 17 00 B H PRO g n D PART 220955901 4 COHP DIGITAL DIGITAL COMPRESSOR gt be E 5 5186 E COMP FIX 1 aml 2 FIX oovpResson MIRING eM sM M mne Ja UNIT Bip no Ta bem oem zm NAIN FOUR WAY VAVLE 09 010 00 0425 AUXILIARY FOUR WAY VALVE D RD M saD fomo o fa LE TERWINGAL sn PRESSURE SWITCH CAPACI M A N BO ARD PRESSURE SWITCH ADDRESS Cus 9115 us wer mo n Sen DIGITA COMPRESSOR 22 J sz e s8 p Sad 26 1 2 010 CRANKCASE HEATING PULSE MOTOR EXPANSION VALVE ECN o SE eee E ae DISPLAY 1d 1 eo 0 MOTHER El Phase PROTECTION A CU COMMUNICATION FAILURE INDOOR UNIT ES E4 P SENSOR FAILURE RD RD WH BU oala ADDRESS OF OUTDOOR UNIT ERROR HO WODE CONFLICT HI COMMUNICATION FAILURE BETWEEN CHIPS Z SES H2 OUTDOOR UNITS DECREASING ERROR OUTDOOR UNITS INCREAS ING ERROR O pj HIGH PRESSURE PROTECTION gt p2 LOW PRESSURE PROTECTION pa CURRE
4. nd COMP FIXI FIX COMPRESSOR M Ms E Y TY 2 x Y n CAPACITOR YE nb BK WH PWM sti un FOUR WAY vate AUXILIARY FOUR WAY VALVE waea RD RD XT2 XT4 MIDDLE TERMINGAL L PRO LOW PRESSURE SWITCH Wo HIGH PRESSURE SWITCH EV A B eeu EXPANSION VALVE XS4 X88 CONNECTORS i es COMMEGTORS 1 PIPE TEMPERATURE SENSOR TDOOR AMBIENT TEMP SENSOR 17 0 QUT AY AG TEMP SENSOE DIGITAL COW gt RESSCR EDCOUPRESSOR DISCHARG TEMPSENSOR 011 07 0127 CURRENT PROTECTOR svi sve LECTROMAGNETISN VALVEI MAIN BOARD HEAT 1 2 DIG JCRANKGASE HEATING PULSE MOTOR EXPANSION VALVE DISPLAY COMMUNICATION FAILURE EO NOTHER QUTDOOR UNIT Phase PROTECTION UNICATION FA INDOOR UNIT EXHAUST TEMP SENSOR ERROR ADDRESS OF OUTDOOR UNIT ERROR MODE GONFLICT COMMUNICATION FAILURE BETWEEN CHIPS OUTDOOR UNITS DECREASING ERROR OUTDOOR UNITS INCREASING ERROR HIGH PRESSURE PROTECTION LOW PRESSURE PROTECTION CURRENT PROTECTION DIGITAL COMP EXHAUST TEMP PROTECTION DIGITAL COMP PE TEMP TOO HIGH ERROR CURRENT PROTECTION FIX SPEED COMP 1 CURRENT PROTEC FIX SPEED CONP 2 EN E4 E8 m EN E co HEAT2 HEAT1 9958 Ulu jo uU co COLOUR LEGEN D nw Cp e e Fa sw x we unused Outdoor
5. MCAC DTSM 2006 01 2 Dimensions MDV D252W CSN1 MDV D280W CSN1 MDV D335W CSN 1 Dimensions amp 11 5 MDV D400W CSN1 MDV D450W CSN1 751 1372 823 HH fan 902 5 2 S E SRM 793 3 Service Space 3 1 Power supply equipment is preferred to be installed by the side of the outdoor unit 3 2 Ensure there is sufficient space for the maintenance of the outdoor unit 3 3 Proper space between outdoor units should be kept Outdoor Units 127 5 2006 01 Service Space 1000mm gt 1000mm 4 4 4 Da 3 4 Distance between foot screws is shown as follows unit mm MDV D252W CSN1 MDV D280W CSN1 MDV D335W CSN1 980 598 1 1 MDV D400W CSN1 MDV D450W CSN1 Bolt hole 15z12 3 5 Outdoor unit arrangement Outdoor units are higher than the surrounding buildings Outdoor Units 128 5 2006 01 Service Space Outdoor units are aligned in one line 1O00men 1 000mm 1 000mm 600mm Outdoor units are aligned in two lines 1 nmm 1 000mm 400rmen 1000mm gt 1 000mm 6U00min More than 2 lines of outdoor units pb
6. NT PROTECTION DIGITAL COMP e lt pq EXHAUST TEMP PROTECTION DIGITAL COVP LC 712 BK x L o m w THE QUTDOOR PIPE TENP TOO HIGH ERROR gt Q Ti V 1 als B e 8 e KJ a 10000 XT2 YE GN YE GN Ty l TO OUT DOOR UNIT TO INDOOR UNIT sn so 03 sw 0 OUT DOOR POWER comvicatiow Bus communication E C ium oe 2 EIS c 1 Q 7 gt gt Functional parts and safety devices MCAC DTSM 2006 01 6 Functional parts and safety devices Digital Scroll ZPD72KCE TFD 433 Constant Scroll ZP57KS3E TFD 422 ZP67KCE TFD 420 Compressor Opening temperature 11045 C 145 5 C 11045 C 145 5 C G4A 27108 47 A 2 105 64A 2 105 55A 2 105 Safety thermostat of 145 5 Security Devices High pressure switch OFF 44kg cm ON 32kg cm Temperature sensor condenser outlet 25 10 Thermostat Digital discharge sensor When Tmax2118 C all the compressors are off Thermostat Fixed discharge Digital Scroll Constant Scroll ZPD72KCE TFD 433 ZP67KCE TFD 420 X2 Opening temperature 110 5 14 5 Compressor Trip current 64 2 10s 55 2 10s Safety thermostat off 145 5 C Security Devices High pressure switch OFF 44kg cm ON 32
7. kg cm Temperature sensor condenser outlet 25 10 Thermostat Digital discharge sensor When Tmax2118 C all the compressors are off Thermostat Fixed discharge 134 Outdoor Units
8. re than one module in the combination SV1 is used to cut off the refrigerant flow among modular If the module is in standby mode Sv1 will be closed and refrigerant can t enter the module SV2 cooling down the compressor when the discharge gas temperature of any compressor is more than 100C 130 Outdoor Units MCAC DTSM 2006 01 Piping Diagram SV3 adjust heat exchanger area of outdoor when in heating mode SV5 used when starting heating mode or defrosting mode SV6 adjust the refrigerant flux in cooling mode And in heating mode it will be always open 4 3 How to check the valves a Electronic Expansion Valve EXV when the outdoor unit is power the two EXVs firstly close with 700p then they open with 350p and enter standby mode two EXVs action is not at the same time b Electromagnetic Valve when the outdoor unit is power on the SV1 open immediately so you can check the valve as soon as the outdoor unit is power on when the compressor starts working in heating mode the SV3 is open immediately so you can check the valve as soon as the compressor start 5 minutes after the outdoor unit start heating mode SV5 will open when the compressor starts working in cooling mode the SV6 open immediately so you can check the valve as soon as the compressor starts control the discharge temperature by adjusting the resistance of the temperature sensor when the discharge temperature is higher than 105 C SV2 open immediately
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