Midea MFA-96CRN1 Technical Manual
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Midea MFA-96CRN1 Technical Manual

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MCAC-UTSM-2012-12
R410A 50Hz Tropical Split AC
Content
Part 1 General Information ........................................... 2
Part 2 Indoor Units ........................................................ 6
Part 3 Outdoor Units ................................................... 91
Part 4 Installation ...................................................... 119
Part 5 Control ............................................................ 151
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Summary of Contents for Midea MFA-96CRN1

  • Page 1: Table Of Contents

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Content Part 1 General Information ........... 2 Part 2 Indoor Units ............6 Part 3 Outdoor Units ........... 91 Part 4 Installation ............119 Part 5 Control ............151...

  • Page 2: Part 1 General Information

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part 1 General Information 1. Model Names of Indoor/Outdoor Units ......3 2. External Appearance ............4 3. Nomenclature ..............5...
  • Page 3 1.1 Model Names of Units with Cooling only: Indoor unit Outdoor unit Capacity Type Power Power Model Model Btu/h supply supply MFA-76CRN1 MOV-76CN1-C Floor-standing type MFA-96CRN1 MOV-96CN1-C 380~415V- MTA-76CRN1 MOV-76CN1-C 3N-50Hz Mid-static MTA-96CRN1 MOV-96CN1-C 220~240V- pressure duct 380~400V- MTA-120CRN1 1Ph-50Hz MOV-120CN1-C type...

  • Page 4: External Appearance

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 2. External Appearance 2.1 Indoor Units MTA-76C(H)RN1 MFA-76C(H)RN1 MTA-96C(H)RN1 MFA-96C(H)RN1 MTA-120CRN1＼MTA-120HRN1 MTA-150CRN1 2.2 Outdoor Unit MOV-76C(H)N1-C MOV-96C(H)N1-C MOV-120C(H)N1-C MOV-150C(H)N1-C (MOV-76C(H)N1-C*2)
  • Page 5 A: 1 time design B: 2 time design Indoor Units T: Duct type F: Floor-standing type H: High static pressure Midea 3.2 Outdoor unit: M O V 76 C N1 - C Design times None：R22； N1：R410a Function Code： C: Cooling Only...

  • Page 6: Part 2 Indoor Units

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part 2 Indoor Units Duct Type ................7 Floor-standing Type ............. 59...

  • Page 7: Duct Type

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Duct Type 1. Features ................8 2. Specifications ..............9 3. Dimensions ..............12 4. Service Space ..............14 5. Piping Diagrams .............. 16 6. Wiring Diagrams .............. 16 7.Capacity Table ..............21 8. Static Pressure ..............34 9.

  • Page 8: Features

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 1. Features 1. Nested in the ceiling, space-saving and noble. 2. High capacity of cooling/heating, efficient, and energy-saving. 3. The air outlet is laid out according to you desire. 4. Economic and convenient installation 1) Several diffusers branch off from an indoor unit, adjusting the room temperature, which makes many rooms to be air-conditioned with only one indoor unit.

  • Page 9: Specifications

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 2. Specifications Model MTA-76CRN1 MTA-76HRN1 MTA-96CRN1 MTA-96HRN1 Power supply 220~240V-1Ph-50Hz 220~240V-1Ph-50Hz ℃ Temp. setting range 17～32 20～27 17～32 20～27 Rated input power 11700 11700 14400 14400 Rated current 19.3 19.3 23.7 23.7 Btu/h 75100 75100 95600 95600...
  • Page 10 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Model MTA-120CRN1 MTA-120HRN1 MTA-150CRN1 MTA-150HRN1 Power supply 220~240V-1Ph-50Hz 220~240V-1Ph-50Hz ℃ Temp. setting range 17～32 20～27 17～32 20～27 Rated input power 17300 17300 21200 21200 Rated current 28.6 28.6 119400 119400 Btu/h 150100 150100 Capacity 35000 35000 44000...
  • Page 11 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Model MHB-76CRN1 MHB-76HRN1 MHB-96CRN1 MHB-96HRN1 Power supply 220~240V-1Ph-50Hz 220~240V-1Ph-50Hz ℃ Temp. setting range 17～32 20～27 17～32 20～27 Rated input power 11700 11700 14400 14400 Rated current 19.3 19.3 23.7 23.7 Btu/h 75100 75100 95500 95500 Capacity 22000...

  • Page 12: Dimensions

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 3. Dimensions 3.1 MTA-76C(H)RN1, MTA-96C(H)RN1, MHB-76C(H)RN1, MHB-96C(H)RN1...
  • Page 13 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 3.2 MTA-120C(H)RN1...
  • Page 14 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 3.3 MTA-150C(H)RN1...

  • Page 15: Service Space

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 4. Service Space Electric control box Inspection hole Top view Side view Canvas adapter Muffle Air outlet Muffle Air inlet Inspection hole Air filter Air duct system...

  • Page 16: Piping Diagrams

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 5. Refrigerant cycle diagram 5.1 Cooling only: MTA-76CRN1, MTA-96CRN1, MTA-120CR N1, MTA-150CR N1 MHB-76CRN1, MHB-96CRN1 Outdoor heat-exchanger Cooling HP Switch Indoor unit Discharge temp. sensor LP Switch Compressor Indoor heat-exchanger Liquid-gas seperator 5.2 Cooling and heating: MTA-76HRN1, MTA-96HRN1, MTA-120HRN1 MHB-76HRN1, MHB-96HRN1 Outdoor heat-exchanger Cooling...

  • Page 17: Wiring Diagrams

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 6. Wiring Diagrams 6.1 MTA-76CRN1, MTA-96CRN1, MHB-76CRN1, MHB-96CRN1 TO WIRE CONTROLLER CN11 CN10 CN15 MAIN CONTROL BOARD CN20 BLUE WHITE HIGH SLOW BLACK BLUE BLACK WHITE N-LINE WHITE WHITE WHITE WHITE (GRAY) (GRAY) INDOOR POWER TO OUTDOOR Item Name...
  • Page 18 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 6.2 MTA-120CRN1, MTA-150CRN1 TO WIRE CONTROLLER CN11 CN10 CN15 MAIN CONTROL BOARD CN20 WHITE BLUE HIGH SLOW WHITE WHITE BLUE BLACK BLUE WHITE WHITE WHITE WHITE WHITE (GRAY) WHITE (GRAY) (GRAY) INDOOR POWER TO OUTDOOR Item Name Item...
  • Page 19 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 6.3 MTA-76HRN1, MTA-96HRN1, MHB-76HRN1, MHB-96HRN1 TO WIRE CONTROLLER CN11 CN10 CN15 MAIN CONTROL BOARD CN20 BLUE WHITE HIGH WHITE SLOW BLACK YELLOW BLUE BLACK WHITE N-LINE BLACK WHITE WHITE WHITE WHITE (GRAY) (GRAY) INDOOR POWER TO OUTDOOR Item Name...
  • Page 20 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 6.4 MTA-120HRN1 TO WIRE CONTROLLER CN11 CN10 CN15 MAIN CONTROL BOARD CN20 WHITE BLUE HIGH SLOW WHITE WHITE BLUE BLACK BLUE WHITE WHITE WHITE WHITE WHITE (GRAY) WHITE (GRAY) (GRAY) INDOOR POWER TO OUTDOOR Item Name Item...

  • Page 21: Capacity Table

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7. Capacity Table 7.1 Cooling: 7.1.1 MTA-76CRN1 Gross Cooling Capacity (kW) Outdoor DB(° C) 29.40 35.00 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 19.5 15.2 6.56 21.9 12.4 6.76 23.3 6.89 18.7...
  • Page 22 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) 40.60 46.10 51.70 Outdoor DB(° C) Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 17.3 14.2 7.94 18.9 10.7 8.18 20.1 4.6 8.33 15.8 13.0 8.13 17.3 9.8 8.39 18.5 8.64 15.5 12.7 8.51 16.8 8.87 17.9...
  • Page 23 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.2 MTA-76HRN1 Gross Cooling Capacity (kW) Outdoor DB(° C) 29.40 35.00 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 19.2 15.0 6.38 21.6 12.2 6.58 23.0 6.71 18.4 15.1 6.81 20.5 11.6 7.04...
  • Page 24 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) Outdoor DB(° C) 40.60 46.10 51.70 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 Indoor WB(° C) DB(° C) 23.9 17.2 14.1 8.01 18.7 10.6 8.25 20.0 4.6 8.40 15.7 12.9 8.20 17.2 9.7 8.46 18.4 8.71 15.2 12.5 8.76 16.5 9.12 17.6...
  • Page 25 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.3 MTA-96CRN1 Gross Cooling Capacity (kW) Outdoor DB(° C) 29.40 35.00 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 25.3 19.8 8.50 27.8 15.7 8.70 29.2 8.83 24.6 20.2 8.93 26.6 15.1 9.16...
  • Page 26 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) Outdoor DB(° C) 40.60 46.10 51.70 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 Indoor WB(° C) DB(° C) 23.9 22.0 18.0 10.63 23.6 13.3 10.87 24.8 5.7 11.02 20.5 16.8 10.82 22.0 12.4 11.08 23.2 5.4 11.33 20.0 16.4 11.42 21.3 12.0 11.78 22.4 5.2 12.03 26.7 22.4 20.4 10.66 24.0 15.6 10.90 25.3 10.9 11.05 20.9 19.0 10.85 22.4 14.5 11.11 23.6 10.2 11.36 20.4 18.6 11.45 21.7 14.1 11.81 22.8...
  • Page 27 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.4 MTA-96HRN1 Gross Cooling Capacity (kW) Outdoor DB(° C) 29.40 35.00 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 24.9 19.4 8.47 27.4 15.5 8.67 28.8 8.80 24.2 19.8 8.90 26.2 14.8 9.13...
  • Page 28 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) 40.60 46.10 51.70 Outdoor DB(° C) Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 22.0 18.0 10.83 23.5 13.3 11.07 24.8 5.7 11.22 20.5 16.8 11.02 22.0 12.4 11.28 23.1 5.3 11.53 19.4 15.9 11.52 20.7 11.7 11.88 21.8 5.0 12.13 26.7 22.4 20.4 10.86 24.0 15.5 11.10 25.3 10.9 11.25 20.9 19.0 11.05 22.4 14.5 11.31 23.6 10.2 11.56 19.8 18.0 11.55 21.1 13.7 11.91 22.2...
  • Page 29 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.5 MTA-120CRN1 Gross Cooling Capacity (kW) Outdoor DB(° C) 29.40 35.00 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 32.0 25.0 10.99 34.6 19.5 11.19 36.0 11.32 31.4 25.7 11.42 33.4 18.9 11.65...
  • Page 30 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) Outdoor DB(° C) 40.60 46.10 51.70 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 Indoor WB(° C) DB(° C) 23.9 28.3 23.2 12.33 29.9 16.9 12.57 31.1 7.2 12.72 26.8 22.0 12.52 28.3 16.0 12.78 29.5 13.03 26.5...
  • Page 31 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.6 MTA-120HR Gross Cooling Capacity (kW) Outdoor DB(° C) 29.40 35.00 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 31.8 24.8 10.87 34.4 19.4 11.07 35.8 11.20 31.2 25.6 11.30 33.2 18.8 11.53...
  • Page 32 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) 40.60 46.10 51.70 Outdoor DB(° C) Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 28.0 22.9 12.73 29.5 16.7 12.97 30.8 7.1 13.12 26.5 21.7 12.92 28.0 15.8 13.18 29.2 6.7 13.43 26.2 21.4 14.72 27.4 15.5 15.08 28.5 6.6 15.33 26.7 28.5 25.9 12.76 30.1 19.5 13.00 31.4 13.6 13.15 27.0 24.6 12.95 28.5 18.5 13.21 29.7 12.8 13.46 26.7 24.3 14.76 28.0 18.1 15.12 29.1 12.5 15.37...
  • Page 33 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.7 MTA-150CRN1 Gross Cooling Capacity (kW) Outdoor DB(° C) 29.40 35.00 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 41.0 32.0 14.20 43.7 24.7 14.40 45.1 10.4 14.53 40.5 33.2 14.63 42.5 24.0...

  • Page 34: Static Pressure

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) Outdoor DB(° C) 40.60 46.10 51.70 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 Indoor WB(° C) DB(° C) 23.9 36.4 29.8 17.07 37.9 21.4 17.31 39.2 9.1 17.46 34.9 28.6 17.26 36.4 20.5 17.52 37.5 8.7 17.77 34.4 28.2 18.43 35.7 20.2 18.79 36.8 8.5 19.04 26.7 37.1 33.7 17.11 38.7 25.1 17.35 40.0 17.2 17.50 35.6 32.3 17.30 37.1 24.0 17.56 38.3 16.5 17.81 35.1 31.9 18.48 36.4 23.6 18.84 37.5 16.2 19.09...
  • Page 35 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 8. Air flow rate- Static pressure curve MTA-76（H）CRN1 3000 3250 3500 3750 4000 4250 4500 4750 Air Flow (m MTA-96（H）CRN1 3500 3750 4000 4250 4500 4750 5000 5250 5500 Air Flow (m MTA-120（H）CRN1 4250 4750 5250 5750...
  • Page 36 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 MTA-150（H）CRN1 5500 6000 6500 7000 7500 8000 8500 9000 Air Flow (m MHB-76（H）CRN1 3000 3250 3500 3750 4000 4250 4500 4750 5000 5250 Air Flow (m MHB-96（H）CRN1 3750 4000 4250 4500 4750 5000 5250 5500 5750 6000 Air Flow (m...

  • Page 37: Electric Characteristics

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 9. Electric Characteristics Indoor Unit Power Supply Model Voltage Min. Max. MTA-76CRN1 220-240 7.53 1.341 6.02 MTA-76HRN1 220-240 7.53 1.341 6.02 MTA-96CRN1 220-240 1.605 7.28 MTA-96HRN1 220-240 1.605 7.28 MTA-120CRN1 220-240 11.19 2.03 8.95 MTA-120HRN1 220-240 11.19...

  • Page 38: Sound Levels

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 10. Sound Levels Concealed Duct Type Duct Suction Discharge 1.4m Microphone Unit Number Model Noise level under three speeds of fan (dB(A)) MTA-76C(H)RN1 MTA-96C(H)RN1 MTA-120C(H)RN1 MTA-150C(H)RN1 MHB-76C(H)RN1 MHB-96C(H)RN1...

  • Page 39: Exploded View

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 11. Exploded View 11.1 MTA-76CRN1 Part Name BOM Code Part Name BOM Code Evaporator Sealed board 201286900317 13.4 Transformer 202300900093 Side board ass'y 201286900316 13.5 Wire joint, 7p 202301450056 Drainage pan ass'y 201285000677 13.6 Wire joint 202301450122 The left side plate...
  • Page 40 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 11.2 MTA-76HRN1 Part Name BOM Code Part Name BOM Code Evaporator Sealed board 201286900317 13.4 Transformer 202300900093 Side board ass'y 201286900316 13.5 Wire joint, 7p 202301450056 Drainage pan ass'y 201285000677 13.6 Wire joint 202301450122 The left side plate Asynchronous motor 202400400641...
  • Page 41 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 11.3 MTA-96CRN1 Part Name BOM Code Part Name BOM Code Evaporator Sealed board 201286900317 13.4 Transformer 202300900093 Side board ass'y 201286900316 13.5 Wire joint, 7p 202301450056 Drainage pan ass'y 201285000677 13.6 Wire joint 202301450122 The left side plate Motor 202400400071...
  • Page 42 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 11.4 MTA-96HRN1 Part Name BOM Code Part Name BOM Code Evaporator Sealed board 201286900317 13.4 Transformer 202300900093 Side board ass'y 201286900316 13.5 Wire joint, 7p 202301450056 Drainage pan ass'y 201285000677 13.6 Wire joint 202301450122 The left side plate Motor 202400400071...
  • Page 43 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 11.5 MTA-120CRN1 Part Name BOM Code Part Name BOM Code Components of Evaporator ass'y 201570990082 electronic control box 201270600180 cover Evaporator 201570990083 Front panel ass'y 201286910001 Inlet pipe ass'y of 201670990108 Capacitor box 201286900512 evaporator Outlet pipe ass'y of 201670990107...
  • Page 44 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 11.6 MTA-120HRN1 Part Name BOM Code Part Name BOM Code Components of electronic Evaporator ass'y 201570990082 201270600180 control box cover Evaporator 201570990083 Front panel ass'y 201286910001 Inlet pipe ass'y of 201670990108 Capacitor box 201286900512 evaporator Outlet pipe ass'y of 201670990107...
  • Page 45 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 11.7 MTA-150CRN1 Part Name BOM Code Part Name BOM Code evaportator ass'y 201570990081 Wire joint, 7p 202301450056 Evaporator 201586900502 Wire joint 202301450122 Components of electronic Evaporator 201586900504 201270600180 control box cover Evaporator 201586900505 Front panel ass'y 201286910001 Evaporator 201586900506...
  • Page 46 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 11.8 MHB-76CRN1 Part Name BOM Code Part Name BOM Code Evaporator Sealed board 201286900317 13.4 Transformer 202300900093 Side board ass'y 201286900316 13.5 Wire joint, 7p 202301450056 Drainage pan ass'y 201285000677 13.6 Wire joint 202301450122 The left side plate Motor 202400400071...
  • Page 47 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 11.9 MHB-76HRN1 Part Name BOM Code Part Name BOM Code Evaporator Sealed board 201286900317 13.4 Transformer 202300900093 Side board ass'y 201286900316 13.5 Wire joint, 7p 202301450056 Drainage pan ass'y 201285000677 13.6 Wire joint 202301450122 The left side plate Motor 202400400071...
  • Page 48 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 11.10 MHB-96CRN1 Part Name BOM Code Part Name BOM Code Evaporator Sealed board 201286900317 13.4 Transformer 202300900093 Side board ass'y 201286900316 13.5 Wire joint, 7p 202301450056 Drainage pan ass'y 201285000677 13.6 Wire joint 202301450122 The left side plate Fan motor 202400410853...

  • Page 49: Product View And Parts

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 11.11 MHB-96HRN1 Part Name BOM Code Part Name BOM Code Evaporator Sealed board 201286900317 13.4 Transformer 202300900093 Side board ass'y 201286900316 13.5 Wire joint, 7p 202301450056 Drainage pan ass'y 201285000677 13.6 Wire joint 202301450122 The left side plate Fan motor 202400410853...

  • Page 50: Troubleshooting

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 12. Troubleshooting Infrared signal receiver Manual Switch Operation lamp Timer lamp Alarm lamp PRE-DEF lamp(cooling and heating type) or fan only lamp(cooling only type) Type OPT. TME. DEF. ALARM Remarks Light Light Light Light ☆...
  • Page 51 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 13.1 Malfunctions of air conditioner If any of the following malfunctions occur, stop operation of the air conditioner immediately. Turn off the power switch, and contact the local after sales service center of manufacturer: ...
  • Page 52 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 If the air conditioner fails and does not meet the above phenomena, check the system as the following table: Symptoms Causes Handling methods Power supply fails. Operate after power resumes. Power switch is not connected. Connect the power supply properly.
  • Page 53 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Symptoms Causes Handling methods When the “AUTO” mode is selected, the Check whether the mode marked on the unit will change the fan speed screen is “AUTO”. automatically. The fan speed When the “DEWET” mode is selected, cannot be the unit will change the fan speed changed...
  • Page 54 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Operation lamp flashes: All lamps flashing at 5Hz Judge 1: The PRO terminal on PCB of indoor unit without connecting to grounding wire Validate: Check whether the PRO terminal on PCB of indoor Connect it to grounding wire. unit without connected to grounding wire.
  • Page 55 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Operation lamp flashes: Timer lamp flashing at 5Hz Room temperature sensor malfunction Judge 1: Check the room temperature sensor Connects it well. Is break off. Judge 2: Check the room temperature sensor is abnormal. Validate: Check whether the resistance of the Replace temperature sensor temperature sensor is correct according to Annex 1.
  • Page 56 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Operation lamp flashes: Operation lamp flashing at 5Hz Evaporate temperature sensor is abnormal. Judge 1: Check evaporate temperature sensor is break off. Replace temperature sensor Judge 2: Evaporate temperature sensor is abnormal. Validate: Check whether the resistance of the room Replace temperature sensor temperature sensor is correct according to Annex 1.
  • Page 57 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Operation lamp flashes: Defrosting lamp flashing at 5Hz Condenser temperature sensor malfunction Replace temperature sensor Judge 1: Check condenser temperature sensor is break off. Judge 2: Condenser temperature sensor is abnormal. Validate: Check whether the resistance of the condenser Replace temperature sensor temperature sensor is correct according to Annex 1.

  • Page 58: Accessories

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 13. Accessories Name Qty. Shape Usage Owner’s manual Installation manual Remote controller manual Water pipe Connect to water drainage pipe Display board subassembly Connect to control signal Protective sleeve for refrigerant inlet and outlet pipes Remote controller Remote controller mounting bracket Placed the remote controller...
  • Page 59 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Floor-standing Type 1. Features ..................60 2. Specifications ................61 3. Dimensions ..................62 4. Service Space ................63 5. Refrigerant cycle diagram ............64 6. Wiring Diagrams ................65 7. Capacity Tables ................67 8.

  • Page 60: Features

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 1. Features 1. The appearance is novel, luxurious, refined. 2. High capacity of cooling/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.

  • Page 61: Specifications

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 2. Specifications Model MFA-76CRN1 MFA-76HRN1 MFA-96CRN1 MFA-96HRN1 Power supply 220~240V-1Ph-50Hz 220~240V-1Ph-50Hz ℃ ≥17 ≤30 ≥17 ≤30 Temp. setting range Rated input power 11700 11700 14400 14400 Rated current 19.3 19.3 23.7 23.7 Btu/h 75100...

  • Page 62: Dimensions

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 3. Dimensions...

  • Page 63: Service Space

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 4. Service Space Front view Rear 30 cm No obstacle in front of it Top view...

  • Page 64: Refrigerant Cycle Diagram

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 5. Refrigerant cycle diagram 5.1 Cooling only: MFA-76CR, MFA-96CR Outdoor heat-exchanger Cooling HP Switch Indoor unit Discharge temp. sensor LP Switch Compressor Indoor heat-exchanger Liquid-gas seperator 5.2 Cooling and heating: MFA-76HR, MFA-96HR Outdoor heat-exchanger Cooling Heating HP Switch...

  • Page 65: Wiring Diagrams

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 6. Wiring Diagrams 6.1 MFA-76CR, MFA-96CR Item Name Item Name Item Name CAP1 Fan capacitance Room temp. sensor XS1-3 Connector plugs Indoor fan Pipe temp. sensor Swing motor XT1-3 Connector Fan aided control board Transformer XP1-3 Connector plugs...
  • Page 66 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 6.2 MFA-76HR, MFA-96HR Item Name Item Name Item Name CAP1 Fan capacitance Room temp. sensor XS1-3 Connector plugs Indoor fan Pipe temp. sensor Swing motor XT1-3 Connector Fan aided control board Transformer XP1-3 Connector plugs...

  • Page 67: Capacity Tables

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7. Capacity Tables 7.1 Cooling: 7.1.1 MFA-76CRN1 Gross Cooling Capacity (kW) Outdoor DB(° C) 29.40 35.00 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 20.1 16.5 6.48 22.1 12.5 6.68 23.5 6.81 19.3...
  • Page 68 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) Outdoor DB(° C) 40.60 46.10 51.70 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 17.5 14.4 8.07 19.1 10.8 8.31 20.4 4.7 8.46 16.0 13.1 8.26 17.5 9.9 8.52 18.7 4.3 8.77 15.1 12.4 8.83 16.4 9.19 17.5...
  • Page 69 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.2 MFA-76HRN1 Gross Cooling Capacity (kW) 29.40 35.00 Outdoor DB(° C) Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 19.6 16.1 6.38 21.6 12.2 6.58 23.0 6.71 18.8 15.4 6.81 20.5 11.6 7.04...
  • Page 70 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) Outdoor DB(° C) 40.60 46.10 51.70 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 17.1 14.0 8.16 18.7 10.5 8.40 19.9 8.55 15.6 12.8 8.35 17.1 8.61 18.3 8.86 14.8 12.1 9.16 16.0 9.52 17.1...
  • Page 71 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.3 MFA-96CRN1 Gross Cooling Capacity (kW) 29.40 35.00 Outdoor DB(° C) Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 25.9 21.2 8.71 28.0 15.8 8.91 29.4 9.04 25.2 20.6 9.14 26.8...
  • Page 72 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) Outdoor DB(° C) 40.60 46.10 51.70 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 22.3 18.3 10.40 23.9 13.5 10.64 25.1 5.8 10.79 20.8 17.1 10.59 22.3 12.6 10.85 23.5 5.4 11.10 20.5 16.8 11.62 21.8 12.3 11.98 22.9 5.3 12.23 26.7...
  • Page 73 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.4 MFA-96HRN1 Gross Cooling Capacity (kW) Outdoor DB(° C) 29.40 35.00 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 25.4 20.8 8.48 27.5 15.6 8.68 28.9 8.81 24.7 20.2 8.91 26.4 14.9 9.14...
  • Page 74 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Gross Cooling Capacity (kW) Outdoor DB(° C) 40.60 46.10 51.70 Indoor WB(° C) 16.10 19.40 22.80 16.10 19.40 22.80 16.10 19.40 22.80 DB(° C) 23.9 21.7 17.8 10.56 23.3 13.1 10.80 24.5 5.7 10.95 20.2 16.6 10.75 21.7 12.3 11.01 22.9 5.3 11.26 20.2 16.6 11.83 21.5 12.2 12.19 22.6 5.2 12.44 26.7...

  • Page 75: Electric Characteristics

    Model Voltage Min. Max. MFA-76CRN1 220-240 0.59 2.773 MFA-76HRN1 220-240 0.59 2.773 MFA-96CRN1 220-240 0.59 2.773 MFA-96HRN1 220-240 0.59 2.773 Note : MCA: Min. Current Amps. (A) MFA: Max. Fuse Amps. (A) KW: Fan Motor Rated Output (KW) FLA: Full Load Amps. (A)

  • Page 76: Sound Levels

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 9. Sound Levels Microphone Unit Number Model Noise level under three speeds of fan (dB(A)) MFA-76C(H)RN1 MFA-96(H)RN1...

  • Page 77: Exploded View

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 10. Exploded View 10.1 MFA-76CRN1...
  • Page 78 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code Partition board ass'y 201286900018 28.7 Wire joint 202301450133 Fixing board ass'y 201286900017 E-part box cover 201243900000 Volute shell ass'y 201286900019 Base ass'y 201243900005 Motor up cover 201286000007 Waterproof boad ass'y 201286900031...
  • Page 79 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 10.2 MFA-76HRN1...
  • Page 80 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code Partition board ass'y 201286900018 28.7 Wire joint 202301450133 Fixing board ass'y 201286900017 E-part box cover 201243900000 Volute shell ass'y 201286900019 Base ass'y 201243900005 Motor up cover 201286000007 Waterproof boad ass'y 201286900031...
  • Page 81 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 10.3 MFA-96CRN1...
  • Page 82 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code Partition board ass'y 201286900018 E-part box cover 201243900000 Fixing board ass'y 201286900017 Base ass'y 201243900005 Volute shell ass'y 201286900019 Waterproof boad ass'y 201286900031 Motor up cover 201286000007 Drainage pan ass'y 201286900046...
  • Page 83 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 10.4 MFA-96HRN1...
  • Page 84 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code Partition board ass'y 201286900018 E-part box cover 201243900000 Fixing board ass'y 201286900017 Base ass'y 201243900005 Volute shell ass'y 201286900019 Waterproof boad ass'y 201286900031 Motor up cover 201286000007 Drainage pan ass'y 201286900046...

  • Page 85: Troubleshooting

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 11. Troubleshooting Type Code Remarks EEPROM error Manual reset Room temp. sensor error Manual reset Evaporator temp. sensor error Manual reset Evaporator temp. too low protection in cooling mode Auto reset Evaporator temp. too high protection in heating mode Auto reset...
  • Page 86 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 11.1 E1 malfunction LED indicate E1 Fault of indoor temperature sensor T1 Judge 1: Whether the indoor temperature Connects it well. sensor T1 is break off. Judge 2: Whether the indoor temperature sensor T1 is malfunction. Validate: Check whether the resistance of the temperature sensor is correct Replace it.
  • Page 87 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 11.2 E2 malfunction LED indicate E2 Fault of indoor temperature sensor T2 Judge 1: Whether the indoor temperature Connects it well. sensor T2 is break off. Judge 2: Whether the indoor temperature sensor T2 is malfunction. Validate: Check whether the resistance of temperature sensor...
  • Page 88 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 11.3 P1 malfunction LED indicate P1 Under heating mode, T2 is on high temperature protection Judge 1: Check whether the evaporator temperature Connect it well. sensor T2 is break off. Judge 2: Whether the evaporator temperature sensor is malfunction.
  • Page 89 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 11.4 P2 malfunction LED indicate P2 Under cooling mode, T2 is on low temperature protection Judge 1: Check whether the evaporator temperature Connects it well. sensor T2 is break off. Judge 2: Whether the evaporator temperature sensor is malfunction.

  • Page 90: Accessories

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 12. Accessories Name Qty. Shape Usage Owner’s manual Installation manual Remote controller manual Water pipe Connect to water drainage pipe Remote controller Remote controller mounting bracket Placed the remote controller AAA battery...

  • Page 91: Part 3 Outdoor Units

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Part 3 Outdoor Units 1. Specifications ..............92 2. Dimension ................ 94 3. Service Space ..............96 4. Wiring Diagrams .............. 98 5. Electric Characteristics ..........100 6. Operation Limits ............101 7. Sound Levels ..............102 8.

  • Page 92: Specifications

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 1. Specifications Model MOV-76CN1-C MOV-76HN1-C MOV-96CN1-C MOV-96HN1-C Power supply 380~415V-3N-50Hz 380~415V-3N-50Hz ℃ Ambient temp range 17~52 -7～52 17~52 -7～52 Rated input 11700 11700 14400 14400 Rated current 19.3 19.3 23.7 23.7 Noise level dB(A) Type scroll scroll...
  • Page 93 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Model MOV-120CN1-C MOV-120HN1-C Power supply 380~400V-3N-50Hz ℃ -7～52 Ambient temp range 17~52 Rated input 17300 17300 Rated current 28.6 28.6 Noise level dB(A) Type scroll scroll Brand Danfoss Danfoss Model SH140A4ALC SH140A4ALC Qty. Compressor Capacity Btu/h 118000...

  • Page 94: Dimension

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 2. Dimension (Unit: mm) 2.1 MOV-76CN1-C, MOV-76HN1-C, MOV-96CN1-C, MOV-96HN1-C...
  • Page 95 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 2.2 MOV-120HN1-C, MOV-120CN1-C...

  • Page 96: Service Space

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 3. Service Space 3.1 MOV-76CN1-C, MOV-76HN1-C, MOV-96CN1-C, MOV-96HN1-C MOV-120HN1-C, MOV-120CN1-C Air outlet 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.
  • Page 97 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Foundation of the outdoor unit ≥500 mm ≥500 mm M12 foundation bolt 4 screws for 1 unit...

  • Page 98: Wiring Diagrams

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 4. Wiring Diagrams 4.1 MOV-76CN1-C, MOV-96CN1-C, MOV-120CN1-C Item Name Item Name Item Name Item Name COMP Compressor HEAT(A) Crank RT3A Pipe temp. sensor Transformer FAN1-2 Outdoor fan Current detector Room temp. sensor SW1-3 Switch CAP1-2 Fan capacitance XT1-2...
  • Page 99 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 4.2 MOV-76HN1-C, MOV-96HN1-C, MOV-120HN1-C Item Name Item Name Item Name Item Name COMP Compressor HEAT(A) Crank RT3A Pipe temp. sensor Transformer FAN1-2 Outdoor fan Current detector Room temp. sensor SW1-3 Switch CAP1-2 Fan capacitance XT1-2 4-way terminal XS1-5, XP1-5...

  • Page 100: Electric Characteristics

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 5. Electric Characteristics Outdoor Unit Power Supply Compressor Model Voltage Min. Max. TOCA MOV-76C-C 380-415 17.5 20.5 16.5 0.573 2.613 MOV-76H-C 380-415 17.5 20.5 16.5 0.573 2.613 MOV-96C-C 380-415 23.8 1.373 6.26 MOV-96H-C 380-415 23.8 1.373 6.26...

  • Page 101: Operation Limits

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 6. Operation Limits Temperature range for unit operation: Cooling mode Heating mode Item Model Outdoor Indoor Outdoor Indoor All model 21℃~52℃ 17℃～32℃ -10℃~24℃ 20℃～27℃...

  • Page 102: Sound Levels

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 7. Sound Levels Standard of testing Front Note: H = (h+1) / 2 Unit Number Model Noise level (dB(A)) MOV-76C(H)N1-C MOV-96C(H)N1-C MOV-120C(H)N1-C...

  • Page 103: Exploded View

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 8. Exploded View 8.1 MOV-76CN1-C...
  • Page 104 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code Three-phase power top cover welding part 201275990072 12.12 202301600518 protection devices low pressure valve ass'y 201675990295 front-right support pillar 201275990070 Pipe joint 201601200004 asynchronism fan motor 202400400563 Valve body 201601600314...
  • Page 105 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 8.2 MOV-76HN1-C...
  • Page 106 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code top cover welding part 201275990072 12.9 Wire joint 202301450121 four-way valve ass'y 201675990299 12.10 Wire joint 202301450122 Pressure controller 202301820042 12.11 Wire joint 202301450130 Three-phase power 4-way valve 201600600110 12.12...
  • Page 107 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 8.3 MOV-96CN1-C...
  • Page 108 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code Welding together pieces 201275990102 Front right column 201275990109 of roof Low-pressure valve 201675990276 Induction motor 202400400456 assembly Pipe joint 201601200004 Condenser components 201575990014 Cube Valve 201601601291 15.1 Condenser 201575990015...
  • Page 109 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 8.4 MOV-96HN1-C...
  • Page 110 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code Welding together pieces 201275990102 12.8 Wire joint 202301450130 of roof Three-phase power Four-way valve assembly 201675990271 12.9 202301600518 protection devices Pressure controller 202301820042 12.10 Compressor capacitor 202401000410 4-way valve 201600600110...
  • Page 111 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 8.5 MOV-120CN1-C...
  • Page 112 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code Inlet pipe ass'y of The partition 201275990085 201675990367 condensor Electronic control box The air grille 201275990062 201275990065 cover Bottom mounting plate of Low pressure valve ass'y 201675990379 201275990079 electronic control box...
  • Page 113 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 8.6 MOV-120HN1-C...
  • Page 114 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Part Name BOM Code Part Name BOM Code Bottom mounting plate of The partition 201275990085 201275990079 electronic control box Outdoor electronic control The air grille 201275990062 203375990015 box components Welding together pieces 201275990102 22.1 electric box welding ass'y 201275990107 of roof...

  • Page 115: Troubleshooting

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 9. Troubleshooting Type LED1 LED2 Remarks Standby ☆ ☆ Cooling mode ◆ ◇ Heating mode ◆ ◆ Defrosting mode ◇ ◆ Phase sequence protection Manual reset ◆ ●★ Communication failure Manual reset ◆ ●●★ Outdoor condenser temp.
  • Page 116 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 10. Malfunctions: About the Fault of T3A or T3B, High pressure protection, low pressure protection. Please refer to the following: Fault of T3A or T3B Judge 1: Whether the sensor is break Connects it well. off.
  • Page 117 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Low pressure protection Judge 1: The wiring between the low pressure switch and main control board is connected well or correctly Connect it well Judge 2: Whether the low pressure switch is broken Validate: Short connect the low pressure switch socket, check whether the system can run normally Replace low pressure switch Check whether the refrigerant system is ok...
  • Page 118 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 High pressure protection Judge 1: Whether the wiring between the high pressure switch Connect it well and main control board is connected well or correctly Judge 2: Whether the high pressure switch is broken Validate: Short connect the high pressure switch Replace high pressure switch socket, check whether the system can run normally...

  • Page 119: Part 4 Installation

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Part 4 Installation 1. Note 2. Installation of Indoor Units ......... 121 3. Installation of Outdoor Units ........126 4. Heat Insulation of the Pipe .......... 134 5. Installation of Connective Pipe ........135 6.

  • Page 120: Note

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 1. Note CAUTION:  Install the unit where enough space of installation and maintenance is available.  Install the unit where the ceiling is horizontal and enough for bearing the weight of the indoor unit. ...

  • Page 121: Installation Of Indoor Units

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 2. Installation of Indoor Units 2.1 Installation of Duct 2.1.1 Installation Space Ensure enough space required for installation and maintenance. (Fig-1 and Fig-2) Electric control box Inspection hole Fig-1 Fig -2 2.1.2 Install Φ10 Pendant Bolts Or Ground Bolts (Fig-3) MTA-76C(H)RN1 MTA-96C(H)RN1 MHB-76C(H)RN1...
  • Page 122 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 A. Wooden structure Put rectangular sticks across the beams, and set pendant bolts. (Fig-4) Fig-4 B. New concrete roughcast Use embedded bolts, embedded pulling plugs, and embedded stick harness. (Fig-5) Fig-5 C. New concrete roughcast Set it with embedded bushes or embedded bolts.
  • Page 123 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Pendant bolt Unit body Fig-8 2.1.4 Design and Connection of Duct  The duct design must comply with the national heating air conditioner pipeline design specifications.  The duct accessories and materials must be produced by professional manufacturers. ...
  • Page 124 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 2.2 Installation of Floor-standing 2.2.1 Installation Space For ensure the proper installation Select the enough solid and level sites. Ensure enough space required for installation and maintenance. (Fig-10and Fig-11) Fig-10 Fig-11 For anti-fall down, please conduct the follow measures: ...
  • Page 125 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Put down the air intake panel, before electric connection:  Uncover the screw-cap in the air intake panel, and then lessen the screws.  Take off the air intake panel; ensure which place secure enough will not make risk to the other people. Fig-13 NOTE: Please beware of the foot screw, which may be hurt for the pass-by people, make sure enough security of that, prevent accident...

  • Page 126: Installation Of Outdoor Units

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 3. Installation of Outdoor Units 3.1 Important: Construction Checkpoints 1). Installation Check the model and name to avoid mistaken installation. 2). Refrigerant pipe  The refrigerant pipes must have the specified diameter.  Nitrogen of a certain pressure must be filled into the refrigerant pipe before welding. ...
  • Page 127 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Air outlet Air inlet Air inlet Fig-14 ≥1000 mm ≥500 mm ≥1000 mm ≥1000 mm ≥1000 mm Fig-15 NOTE: 1. In case any obstacles exist above the outdoor unit, such obstacles must be 2000mm above the outdoor unit. 2.
  • Page 128 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 The distance of the foundation bolt is shown in Fig-17. Fig-17 3.3 Convey Outdoor Unit  Use 4 steel ropes of a Ф6mm or bigger size to hoist the outdoor unit and convey it into the room. ...
  • Page 129 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Snow protection Snow protection shed at the air outlet shed at the air inlet Snow protection shed at the air inlet Fig-19 3.5 Installation of Refrigerant Pipe  The refrigerant pipe adapter is located inside the outdoor unit. When the pipe is connected from the front side, the pipe can be let out through the right front board.
  • Page 130 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Fig-21 NOTE: When welding the refrigerant pipe, in order to prevent internal oxidation of the pipe, nitrogen must be filled 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...
  • Page 131 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Table 1: 76000 96000 50000 120000 Btu/h Btu/h Max. equivalent length of pipe (L) Outdoor upper Height difference between Max. height difference indoor unit and outdoor unit (H) Outdoor lower 3) Connection between indoor unit and outdoor unit (Fig-23) 76000, 96000, 120000 Btu/h 150000 Btu/h...
  • Page 132 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Fig-23 3.6 Airtight Test After the pipes between the indoor unit and the outdoor unit are connected, replenish compressed nitrogen to perform airtight test. NOTE: 1. The airtight test is performed by using the compressed nitrogen [2.94MPa (30kg/cm G)].
  • Page 133 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 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.

  • Page 134: Heat Insulation Of The Pipe

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 4. Heat Insulation of the Pipe 4.1 Heat Insulation of the Pipe In order to prevent faults caused by condensate of the refrigerant pipe and drain pipe, perform condensate prevention and heat insulation properly. CAUTION: If it is forecast that high humidity/temperature environment (condensate temperature is over 23℃) may exist in the ceiling, e.g., inside the ceiling with slab, ceiling which is in the same environment as the outdoor air), it is necessary to apply 10mm or thicker...

  • Page 135: Installation Of Connective Pipe

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 5. Installation of Connective Pipe 5.1 Preparation before Installation Check the height difference between the indoor unit and the outdoor unit, and check the length and number of bends of the refrigerant pipeline, which must meet the following requirements: ...
  • Page 136 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Fig-27 5.2.2 Deploy the pipelines  Drill a porthole on the wall, and put the hole sheath and hole cover through the wall.  Place the connective pipe together with the indoor & outdoor connection wires. Use wrapping tape to tie them tight.
  • Page 137 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Fig-29  Tighten the nut Align with the connective pipe Screw up the connection pipe nut manually, and use a spanner to tighten it as shown in Fig-38 Fig-30 NOTE: According to the installation conditions, too large torque will damage the flaring, and too small torque will lead to looseness and leakage.
  • Page 138 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 5.3 Expelling Air 5.3.1. From the following table, select a method of expelling air. Table 4: Length of connective pipe Procedure of expelling air (single pass) Less than 5m Use refrigerant in the outdoor unit 5～15m Use vacuum pump or refrigerant tank.
  • Page 139 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Manifold valve Multimeter manometer -76cmHg -handle Lo-handle Filler hose Filler hose Lo pressure valve Fig-32  Loosen and remove the maintenance orifice nut of valve A, and connect the filler hose of the manifold valve to the maintenance orifice of valve A (tighten both valve A and valve B).

  • Page 140: Installation Of Drain Pipe

    R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 5.4 Leak Detection Use soap water or a leak detector to check whether gas leakage exists at the adapters. 5.5 Heat Insulation  Use heat insulation materials to wrap the part protruding outside the flared pipe joint and the refrigerant pipe of the liquid pipe and the gas pipe, and ensure that no gap exists between them.

  • Page 141: Electric Connection

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7. Electric Connection 7.1 Electric field wiring CAUTION:  Use special power supply for the air conditioner. Design power supplies specific to the indoor unit and outdoor unit. The supply voltage must comply with the nominal voltage. ...
  • Page 142 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 7.1.1 Duct type- 76 kBtu/h; 96 kBtu/h; 120 kBtu/h, cooling only: 7.1.3 Duct type- 76 kBtu/h; 96 kBtu/h; 120 kBtu/h, cooling and heating type:...
  • Page 143 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.1.2 Duct type-150 kBtu/h, cooling only: 7.1.4 Duct type-150 kBtu/h, cooling and heating type:...
  • Page 144 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 7.1.5 Floor standing type- 76 kBtu/h; 96 kBtu/h, cooling only: 7.1.6 Floor standing type- 76 kBtu/h; 96 kBtu/h, cooling and heating type:...
  • Page 145 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.2 Specifications of power supply Indoor unit: Model MTA-76CRN1 MTA-76HRN1 MTA-96CRN1 MTA-96HRN1 220~240V- 220~240V- 220~240V- 220~240V- Power supply 1Ph-50Hz 1Ph-50Hz 1Ph-50Hz 1Ph-50Hz Capacity of power 20/10 20/10 20/8 20/8 supply/ fuse (A) Indoor power RVV-300/500 RVV-300/500 RVV-300/500...
  • Page 146 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Model MFA-76CRN1 MFA-76HRN1 MFA-96CRN1 MFA-96HRN1 220~240V- 220~240V- 220~240V- 220~240V- Power supply 1Ph-50Hz 1Ph-50Hz 1Ph-50Hz 1Ph-50Hz Capacity of power 20/10 20/10 20/10 20/10 supply/ fuse (A) RVV-300/500 RVV-300/500 RVV-300/500 RVV-300/500 Indoor power cable 2*2.5 mm 2*2.5 mm...
  • Page 147 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 7.3 Power wires The power wires are as follows: (schematic diagram) Indoor unit Control wire between Manual switch RCCB indoor unit and outdoor unit Indoor unit power supply 220-240V~ 50Hz Manual switch RCCB Outdoor unit power supply 380-415V 3N~ 50Hz Fig-35...

  • Page 148: Methods Of Configuring And Selecting Installation

    3. The button structure is easy to install and uninstall. 1. For purpose of air inlet. 2. Must adopt fire-resistant materials. (Those materials other than specified by Midea than specified by Midea be applied) 3. The heat insulation material must be glass wool. 1. For purpose of air outlet.
  • Page 149 3. Applicable to storey height of over 5m (for design of tall storey such as temple, consult Midea). 1. The fan is the adjustable type which can change direction of air flow. It is used for deluxe decoration.
  • Page 150 3. Use ventilation pipe-specific tapes (instead of ordinary adhesive tapes). In order to ensure the installation quality and durability, it is necessary to use the auxiliary materials of standard specifications provided by Midea Electronics and the auxiliary products of the specified manufactures.

  • Page 151: Part 5 Control

    MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC Part 5 Control 1. Wireless Remote Controller ........152 2. Wired controller (Optional) ......... 157 3. Central Control Monitor (Optional) ......161...
  • Page 152 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 1. Wireless Remote Controller: R51/CE and R51/E (Standard) 1.1 Remote Controller Specifications Model R51/CE and R51/E Rated Voltage 3.0V Lowest Voltage of CPU Emitting Signal 2.0V Reaching Distance 8m (when using 3.0 voltage, it Gets 11m) Environment Temperature Range -5℃～60℃...
  • Page 153 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 1.2 Introduction of Function Buttons on the Remote Controller Fig-1 Note: This illustration is for explanation purposes only. The actual shape or button names of the remote controller may be slightly different. ① TEMP Button: Push the TEMP button to decrease the indoor temperature setting or to adjust the TIMER in a counter-clockwise direction.
  • Page 154 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 ⑥ LOCK Button: Push this button to lock in all the current settings. To release settings, push again. ⑦ CANCEL Button: Push this button to cancel the TIMER settings. ⑧ TIMER Button: This button is used to preset the time ON (start to operate) and the time OFF (turn off the operation).
  • Page 155 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC NOTE: All items are shown in the Fig-2 for the purpose of clear presentation but during the actual operation only the relative functional items are shown on the display panel. 1.4 Operating the Remote Controller 1) Install / Replace Batteries The Remote Controller uses two alkaline dry batteries (R03/Ir03X2).
  • Page 156 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 a. To set the STARTING time. ※ Please push the CANCEL button to cancel any former settings. ※ Push the TIMER button. The remote controller will show the TIMER and the signal "h" is shown on the display panel.
  • Page 157 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 2. Wired controller (Optional) KJR-10B 1) Outlook 2) Installation W ir in g P r in c i pl e S k e t c h : I n f ra ed P i pe W ir e J o in t , 5 p 5 -C o re S hie ld C a ble ,th e len gt h R U N...
  • Page 158 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Note: 1. Never turn screws too tightly, or else the cover would be dented or the Liquid Crystal breaks. 2. Please leave enough long cable for maintenance of the Wire Controller Board.
  • Page 159 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 3. Central Control Monitor (Optional) CCM03 1) Outlook Buttons and Functions...
  • Page 160 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 Liquid Crystal Display:...
  • Page 161 MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC 2) Installation Note: To differentiate each centralized controller, the controllers in the same RS-485 net should be with different address with each other. NOTE: 1. Never turn screws too tightly, otherwise the cover would be dented, or the Liquid Crystal would be broken. 2.
  • Page 162 R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12 ℃ ℃ ℃ ℃ K Ohm K Ohm K Ohm K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5000 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865 10.4736 2.03732 0.56038 84.2190 10.000 1.96532 0.54448 79.3110...

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