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background image

-UTSM-12

80

Outdoor unit

Room in which refrigerant is leaked

(All refrigerant is leaked)

Fig-24

Fig-25

3.12 Completing the Connection System Name

In case multiple systems are set, in order to identify the connection system of the indoor unit and outdoor unit,
it is necessary to give name to each system, and mark it onto the nameplate on the electric control box cover
of the outdoor unit.

NOTE:



The indoor unit and outdoor unit are categorized into system A and system B. When installing and

connecting the indoor unit and outdoor unit, identify the label carefully, and make sure that indoor unit
corresponds to the outdoor unit exactly. Otherwise, it may lead to fault of the air conditioner.



Model of indoor unit. Room name

Example: the first system indoor unit A of the 2

nd

floor is recorded as: 2F 1A.

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Содержание MDFA-76CRN2

Страница 1: ...e 3 1 Model Names of Indoor Outdoor Units 1 1 Model Names of Units with Cooling only Type Indoor unit Outdoor unit Capacity Model Power supply Model Power supply kW kBtu h Floor standing type MDFA 76C...

Страница 2: ...anding type MDFA 76HRN2 220 240V 1N 50Hz MOV 76H CN2 380 415V 3N 50Hz 22 76 MDFA 96HRN2 MOV 96H CN2 28 96 Mid static pressure duct type MDTA 76HRN2 MOV 76H CN2 22 76 MDTA 96HRN2 MOV 96H CN2 28 96 MDTA...

Страница 3: ...A 76 C R N2 N2 R407C N1 R410a R Remote Controller Function Code C Cooling H Cooling and Heating Cooling Capacity 76 kBtu h Product Series A 1st time design B 2nd time design Indoor Units T Medium stat...

Страница 4: ...ce Space 9 5 Refrigerant cycle Diagrams 11 6 Wiring Diagrams 11 7 Capacity Table 15 8 Static Pressure 21 9 Electric Characteristics 22 10 Sound Levels 23 N2 R407C N1 R410a Function Code C Cooling Only...

Страница 5: ...YDK550 4X YDK550 4X Motor Input No W 720 2 720 2 1015 2 1015 2 Motor speed rpm 1040 1040 1300 1300 Coil Type Copper tube and aluminum fin Copper tube and aluminum fin Copper tube and aluminum fin Cop...

Страница 6: ...720 3 720 3 Motor speed rpm 1040 930 825 1040 930 825 Coil Type Copper tube and aluminum fin Copper tube and aluminum fin Tube size mm 7 7 No of rows 4 4 Fin per inch FPI 17 17 Length height mm 1602...

Страница 7: ...MCAC UTSM 12 8 3 Dimensions 3 1 MDTA 76C H RN2 MDTA 96C H RN2...

Страница 8: ...MCAC UTSM 12 9 3 2 MDTA 120C H RN2...

Страница 9: ...MCAC UTSM 12 10 4 Service Space Electric control box Inspection hole 600m m 500m m Top view Side view Inspection Canvas adapter Muffle Air outlet Air inlet Air filter hole Muffle Air duct system...

Страница 10: ...op valve Stop valve Indoor unit LP Switch T4 T2 T3 Cooling Indoor heat exchanger Capillary Compressors 5 3 Cooling and heating MDTA 76HRN2 MDTA 96HRN2 MDTA 120HRN2 Discharge temp sensor HP Switch 4 wa...

Страница 11: ...MCAC UTSM 12 12 6 Wiring Diagrams 6 1 MDTA 76CRN2 MDTA 96CRN2...

Страница 12: ...MCAC UTSM 12 13 6 2 MDTA 76HRN2 MDTA 96HN2 6 3 MDTA 120CRN2...

Страница 13: ...MCAC UTSM 12 14 6 4 MDTA 120HRN2...

Страница 14: ...3 8 01 22 8 10 0 8 15 29 40 21 7 20 1 7 37 23 2 19 5 7 57 24 6 15 0 7 7 20 2 19 8 7 8 21 9 18 4 8 03 23 3 14 2 8 17 32 20 22 5 21 4 7 39 23 6 21 9 7 59 25 1 18 7 7 72 20 6 20 6 7 82 22 4 20 7 8 05 23...

Страница 15: ...54 32 2 20 18 20 18 8 75 21 85 20 23 8 99 23 2 17 31 9 15 18 6 18 6 8 94 20 2 18 7 9 21 21 4 16 0 9 46 17 7 17 7 10 95 19 0 17 6 11 32 20 2 15 1 11 57 2700 23 9 19 51 17 9 8 39 21 08 13 17 8 78 22 35...

Страница 16: ...7 1 25 1 9 62 28 5 23 9 9 82 29 9 18 2 9 95 25 5 25 0 10 06 27 2 22 9 10 29 28 6 17 4 10 43 32 2 28 1 26 7 9 65 29 0 26 9 9 85 30 5 22 8 9 98 26 0 26 0 10 08 27 8 25 7 10 31 29 1 21 7 10 45 3260 23 9...

Страница 17: ...32 2 25 9 25 9 11 14 27 6 25 5 11 38 28 9 21 6 11 53 24 4 24 4 11 33 25 9 24 0 11 59 27 2 20 3 11 84 21 4 21 4 12 66 22 8 21 1 13 02 23 9 17 9 13 28 3260 23 9 24 9 22 9 11 29 26 5 16 5 11 68 27 8 7 2...

Страница 18: ...34 2 31 6 12 23 35 4 29 7 12 43 36 8 22 5 12 56 32 4 31 8 12 66 34 2 28 7 12 89 35 5 21 6 13 03 32 2 35 4 33 7 12 26 36 1 33 4 12 46 37 6 28 0 12 59 33 1 33 1 12 69 34 9 32 3 12 92 36 2 27 0 13 07 40...

Страница 19: ...32 2 32 3 32 3 14 68 33 9 31 4 14 92 35 3 26 3 15 08 30 7 30 7 14 87 32 3 29 9 15 14 33 5 25 0 15 39 31 9 31 9 16 68 33 3 30 8 17 04 34 4 25 7 17 3 4000 23 9 30 9 28 3 14 27 32 5 20 3 14 66 33 7 8 7 1...

Страница 20: ...atic Pressure Pa Air Flow m3 h High Medium Low 8 2 96kBtu h 0 20 40 60 80 100 120 140 160 180 200 3800 4050 4300 4550 4800 5050 5300 5550 5800 6050 6300 Air Flow m3 h Static Pressure Pa Medium High Lo...

Страница 21: ...A Model Outdoor Unit Power Supply Compressor OFM Hz Voltage Min Max MCA TOCA MFA MSC RLA KW FLA MDOV 76C CN2 50 380 415 342 438 15 75 18 5 21 85 48 2 6 3 2 0 573 2 613 MDOV 76H CN2 50 380 415 342 438...

Страница 22: ...TSM 12 23 10 Sound Levels Concealed Duct Type Suction Discharge Microphone 1 4m Duct Unit Number Model Noise level under three speeds of fan dB A 1 MDTA 76C H RN2 54 2 MDTA 96C H RN2 55 3 MDTA 120C H...

Страница 23: ...t Note OPT Light operation light TME Light timer light DEF Light defrosting light the light flashing 13 1 Malfunctions of air conditioner If any of the following malfunctions occur stop operation of t...

Страница 24: ...stem Fix the leakage places and charge the proper quantity of refrigerant Air or non condensable gas exists in the refrigerant system Vacuum the system and charge refrigerant again Compressor fails Re...

Страница 25: ...ork Check whether the batteries of remote controller are exhausted Replace the batteries The ON OFF lamp extinguishes Check whether the time set on the timer has expired Restart the unit The TIMER ON...

Страница 26: ...indoor unit without connecting to grounding wire Validate Check whether the PRO terminal on PCB of indoor unit without connected to grounding wire Connect it to grounding wire Judge 2 Optical coupler...

Страница 27: ...lfunction Judge 1 Check the room temperature sensor Is break off Connects it well Judge 2 Check the room temperature sensor is abnormal Validate Check whether the resistance of the temperature sensor...

Страница 28: ...g at 5Hz Evaporate temperature sensor is abnormal Judge 1 Check evaporate temperature sensor is break off Judge 2 Evaporate temperature sensor is abnormal Validate Check whether the resistance of the...

Страница 29: ...nction Judge 1 Check condenser temperature sensor is break off Replace temperature sensor Yes Judge 2 Condenser temperature sensor is abnormal No Validate Check whether the resistance of the condenser...

Страница 30: ...atures 32 2 Specifications 33 3 Dimensions 34 4 Service Space 35 5 Refrigerant cycle diagrams 36 6 Wiring Diagrams 37 7 Capacity Tables 39 8 Electric Characteristics 43 9 Sound Levels 44 10 Exploded V...

Страница 31: ...ooling heating efficient and energy saving 3 Adopt advanced and high efficient scroll compressor wide angle and long distance air supply 4 Remote control standard screen control optional 5 Easy instal...

Страница 32: ...300 6 YSK300 6 YSK300 6 Dimension mm 250 250 250 250 Drive type Motor step Direct Single Direct Single Direct Single Direct Single Motor model YSK300 6 YSK300 6 YSK300 6 YSK300 6 Motor input No W 590...

Страница 33: ...following conditions Indoor temp 27 CDB 19 CWB Outdoor temp 35 CDB Equivalent ref piping 7 5m horizontal 2 Nominal heating capacities are based on the following conditions Indoor temp 20 CDB Outdoor...

Страница 34: ...MCAC UTSM 12 35 4 Service Space Front view 1 0 c m 1 0 cm Rear 30 cm No obstacle in front of it...

Страница 35: ...op valve Stop valve Indoor unit LP Switch T4 T2 T3 Cooling Indoor heat exchanger Capillary Compressors 5 2 Cooling and heating MDFA 76HRN2 MDFA 96HRN2 Discharge temp sensor HP Switch 4 way valve Liqui...

Страница 36: ...MCAC UTSM 12 37 6 Wiring Diagrams 6 1 MDFA 76CRN2 MDFA 96CRN2 CN20 CN20 CN20...

Страница 37: ...MCAC UTSM 12 38 6 2 MDFA 76HRN2 MDFA 96HRN2 CN20 CN20 CN20...

Страница 38: ...7 05 23 1 17 0 7 19 2310 23 9 20 2 17 0 6 53 22 3 12 9 6 73 23 6 5 6 6 86 19 4 16 3 6 96 21 1 12 2 7 19 22 4 5 3 7 33 26 7 20 9 19 4 6 55 22 7 16 1 6 75 24 1 10 6 6 88 19 8 18 3 6 98 21 5 15 3 7 21 2...

Страница 39: ...5 10 48 26 7 19 3 17 9 7 81 20 9 14 8 8 05 22 2 9 7 8 2 17 8 16 5 8 19 3 13 7 8 26 20 5 9 0 8 51 17 0 15 7 9 9 18 3 13 0 10 26 19 4 8 5 10 51 29 4 19 7 19 3 7 83 21 3 17 9 8 07 22 6 13 8 8 22 18 2 17...

Страница 40: ...29 0 21 3 9 1 2310 23 9 25 7 21 6 8 43 27 8 16 1 8 63 29 2 6 9 8 76 25 0 21 0 8 86 26 7 15 4 9 09 27 9 6 6 9 23 26 7 26 6 24 6 8 45 28 4 20 1 8 65 29 8 13 1 8 78 25 5 23 6 8 88 27 2 19 3 9 11 28 5 12...

Страница 41: ...26 7 25 1 23 2 9 71 26 7 18 9 9 95 28 0 12 3 10 1 23 6 21 9 9 9 25 1 17 8 10 16 26 3 11 5 10 41 21 2 19 6 11 9 22 5 16 0 12 26 23 6 10 4 12 51 29 4 25 6 25 1 9 73 27 2 22 9 9 97 28 6 17 4 10 13 24 1...

Страница 42: ...Load Amps A IFM Indoor Fan Motor Model Outdoor Unit Power Supply Compressor OFM Hz Voltage Min Max MCA TOCA MFA MSC RLA KW FLA MDOV 76C CN2 50 380 415 342 438 15 75 18 5 21 85 48 2 6 3 2 0 573 2 613...

Страница 43: ...MFA 76C H R 53 2 MFA 96 H R 54 11 Troubleshooting Type Code Remarks EEPROM error E0 Manual reset Room temp sensor error E1 Manual reset Evaporator temp sensor error E2 Manual reset Evaporator temp too...

Страница 44: ...ether the indoor temperature sensor T1 is break off Yes Connects it well No Judge 2 Whether the indoor temperature sensor T1 is malfunction Validate Check whether the resistance of the temperature sen...

Страница 45: ...Judge 1 Whether the indoor temperature sensor T2 is break off Yes Connects it well No Judge 2 Whether the indoor temperature sensor T2 is malfunction Validate Check whether the resistance of the temp...

Страница 46: ...sor T2 is break off Connect it well Yes No Judge 2 Whether the evaporator temperature sensor is malfunction Validate Check whether the resistance of the temperature sensor is correct according to Anne...

Страница 47: ...or T2 is break off Connects it well Yes No Judge 2 Whether the evaporator temperature sensor is malfunction Validate Check whether the resistance of the temperature sensor is correct according to Anne...

Страница 48: ...12 50 Part 3 Outdoor Units 1 Specifications 51 2 Dimension 53 3 Service Space 55 4 Wiring Diagrams 56 5 Electric Characteristics 59 6 Operation Limits 60 7 Sound Levels 60 8 Exploded View 9 Troublesh...

Страница 49: ...Motor speed Hi rpm 917 930 917 930 917 930 Outdoor coil Type Copper tube and aluminum fin Copper tube and aluminum fin Copper tube and aluminum fin Tube size mm 7 94 7 94 7 94 No of rows 2 2 2 Fin per...

Страница 50: ...i rpm 917 930 1180 790 1180 790 Outdoor coil Type Copper tube and aluminum fin Copper tube and aluminum fin Copper tube and aluminum fin Tube size mm 7 94 7 94 7 94 No of rows 2 2 2 Fin per inch FPI 1...

Страница 51: ...MCAC UTSM 12 53 2 Dimension 2 1 MDOV 76C H CN2 MDOV 96C H CN2...

Страница 52: ...MCAC UTSM 12 54 2 2 MDOV 120C H CN2...

Страница 53: ...Air inlet Air inlet 1000 mm 1000 mm 500 mm 1000 mm 1000 mm Note 1 In case any obstacles exist above the outdoor unit such obstacles must be 2000mm above the outdoor unit 2 If miscellaneous articles ar...

Страница 54: ...MCAC UTSM 12 56 Foundation of the outdoor unit 762 676 500 mm 500 mm M12 foundation bolt 4 screws for 1 unit...

Страница 55: ...MCAC UTSM 12 57 4 Wiring Diagrams 4 1 MDOV 76C CN2 MDOV 96C CN2 MDOV 120C CN2...

Страница 56: ...MCAC UTSM 12 58 4 2 MDOV 76H CN2 MDOV 96H CN2 MDOV 120H CN2...

Страница 57: ...2 613 MDOV 96C CN2 50 380 415 342 438 20 28 30 53 2 8 0 2 0 573 2 613 MDOV 96H CN2 50 380 415 342 438 20 28 30 53 2 8 0 2 0 573 2 613 MDOV 120C CN2 50 380 415 342 438 22 75 28 7 32 55 57 2 9 1 2 1 2...

Страница 58: ...Sound Levels Standard of testing Outdoor unit Front Note H h 1 2 Unit Number Model Noise level dB A 1 76C H CN2 63 2 96C H CN2 64 3 MDOV 120C H CN2 65 Item Model Cooling mode Heating mode Outdoor Indo...

Страница 59: ...ser temp sensor error Manual reset Outdoor ambient temp sensor error Manual reset Protection of low pressure Auto reset Protection of high pressure Auto reset Protection of over current Auto reset Pro...

Страница 60: ...following Fault of T3A or T3B Judge 1 Whether the sensor is break off Connects it well Yes Judge 2 Whether the sensor is malfunction Validate Short connect the outdoor ambient temperature sensor check...

Страница 61: ...high pressure switch No Check whether the refrigerant system is ok Replace outdoor PCB No Judge 3 Check whether the outdoor ambient temperature is too high Yes Stop the unit No Judge 4 Check whether t...

Страница 62: ...refrigerant of the system is leakage Yes Validate Connect the pressure gauge to the gauge joint of the system check whether the pressure is lower than 0 15MPa Leak hunting charge nitrogen or refrigera...

Страница 63: ...e equipment if that is inevitable consult the supplier The site contains mineral oils such as cutting lubricant Seaside where the air contains much salt Hot ring area where corrosive gases exist e g s...

Страница 64: ...gger screws The screw material is high quality carbon steel whose surface is zinc plated or undergoes other rustproof treatment or stainless steel 2 The treatment of the ceiling varies between buildin...

Страница 65: ...and embedded stick harness Fig 5 Fig 5 C New concrete roughcast Set it with embedded bushes or embedded bolts Fig 6 Fig 6 D Steel beam and girder structure Set and use supportive angle steel Fig 7 Fi...

Страница 66: ...exchanger and lead to fault and water leak of the air conditioner In order to suppress noise effectively install noise suppression and sound insulation devices especially in the noise sensitive spaces...

Страница 67: ...Fig 11 Fig 10 Fig 11 For anti fall down please conduct the follow measures See Fig 12 to fix the feet on the floor after select a proper place for installation since the height of this unit casing is...

Страница 68: ...rming the airtight test and creating a vacuum 3 Pressure test The refrigerant pipe must undergo the airtight test with 2 94MPa 30kgf cm2 G nitrogen 4 Creating a vacuum Be sure to use the vacuum pump t...

Страница 69: ...ver 12 hours 3 2 Installation Space When installing the unit leave a space for maintenance shown in the following figure Install the power supply at the side of the outdoor unit Ensure enough space fo...

Страница 70: ...12 73 As shown in Fig 16 leave an interval of 500mm between the outdoor units 500 mm 500 mm M12 foundation bolt 4 screws for 1 unit Fig 16 The distance of the foundation bolt is shown in Fig 17 762 6...

Страница 71: ...itioner Remove the cushion for use in the transport after finishing the transport Fig 18 Fork truck can be used for conveying Steel wire Guard board Base and bracket Holes for fork truck Fig 18 3 4 Sn...

Страница 72: ...ght front board Fig 20 and Fig 21 So remove the left front board first Three M5 screws The pipe can be connected from the front left lower side or the bottom notch of the outdoor unit When the pipe is...

Страница 73: ...lled in Otherwise the oxidized chips may block refrigerating circulatory system 3 5 1 Size of Outdoor Unit Pipes and Piping Methods 1 Size of outdoor unit pipes and piping methods Model Gas side Liqui...

Страница 74: ...pipe length L 50m H eigh t difference between indoor unit and outdoor u nit H 30m Indoor unit Fig 22 Table 1 76 96 150 kBtu h 120 kBtu h Max equivalent length of pipe L 50m 50m Max height difference H...

Страница 75: ...UTSM 12 78 76 96 120 kBtu h 150 kBtu h Fig 23 3 Connection between indoor unit and outdoor unit Fig 23...

Страница 76: ...the refrigerant pipe Be sure to blow them off with nitrogen before connecting the pipe to the outdoor units Use high pressure nitrogen to clean the pipelines Do not use the refrigerant of the outdoor...

Страница 77: ...tem and mark it onto the nameplate on the electric control box cover of the outdoor unit NOTE The indoor unit and outdoor unit are categorized into system A and system B When installing and connecting...

Страница 78: ...ulation materials Enough heat insulation materials should also be applied to the refrigerant joint and the pipe joint 4 2 Heat Insulation of the Drain Pipe Be sure to entwine heat insulation materials...

Страница 79: ...ve pipe on the adapter of the indoor unit Too heavy load on the adapter of the indoor unit may deform the pipe and thus affect the cooling heating effect 5 2 1 2 The valve of the outdoor unit should b...

Страница 80: ...Lay out the pipelines carefully lest damage to the pipes 5 2 3 Make a vacuum of connective pipeline 5 2 4 After the above steps are completed the spool of the valve of the outdoor unit should be compl...

Страница 81: ...rigerant required for air conditioner The single pass pipe is shorter than 5 m and no additional length is required note The unit has been replenished before being shipped If the single pass pipe leng...

Страница 82: ...air is expelled tighten the maintenance orifice nut of valve A Open the spools of valves A and B completely Tighten the square head cover of valves A and B completely 5 3 1 3 Use refrigerant tank to e...

Страница 83: ...ether the multi meter points at 1 0X10 Pa 76cmHg Loosen and remove the square head cover of valves A and B After opening valves A and B completely tighten the square head cover of valves A and B Remov...

Страница 84: ...a gradient of 1 50 1 100 The number of bends and folds of the drain pipe should not exceed 2 Try to avoid bends in order to prevent trash accumulation In the construction do not drop trash into the d...

Страница 85: ...hnicians according to the circuit diagram labels Distribute the wires according to the relevant electric technical standards promulgated by the State and set the Residual Current operated Circuit Brea...

Страница 86: ...MCAC UTSM 12 89 Duct type cooling and heating type 76 kBtu h 96 kBtu h 120 kBtu h Floor standing type cooling only 76 kBtu h 96 kBtu h...

Страница 87: ...UTSM 12 90 Floor standing type cooling and heating type 76 kBtu h 96 kBtu h...

Страница 88: ...00 36 6 13059 76 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393...

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