Midea MTA-18WN1 Technical & Service Manual
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Midea MTA-18WN1 Technical & Service Manual

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Technical Service Manual
Model:
Indoor unit
Outdoor unit
MTA-18WN1
MOVTB-18N1-13C
MTA-24WN1
MOVTB-24N1-13C
MTA-36WN1
MOVTB-36N1-13C
MTA-36WN1
MOVTB-36N1-R13C
MTA-48WN1
MOVTB-48N1-R13C
MTA-60WN1
MOVTB-60N1-R13C
Split AC
Power supply
220-240V~ 1Ph 50Hz
220-240V~ 1Ph 50Hz
220-240V~ 1Ph 50Hz
380-415V~ 3Ph 50Hz
380-415V~ 3Ph 50Hz
380-415V~ 3Ph 50Hz

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Summary of Contents for Midea MTA-18WN1

  • Page 1 Technical Service Manual Split AC Model: Indoor unit Outdoor unit Power supply MTA-18WN1 MOVTB-18N1-13C 220-240V~ 1Ph 50Hz MTA-24WN1 MOVTB-24N1-13C 220-240V~ 1Ph 50Hz MTA-36WN1 MOVTB-36N1-13C 220-240V~ 1Ph 50Hz MTA-36WN1 MOVTB-36N1-R13C 380-415V~ 3Ph 50Hz MTA-48WN1 MOVTB-48N1-R13C 380-415V~ 3Ph 50Hz MTA-60WN1 MOVTB-60N1-R13C 380-415V~ 3Ph 50Hz...

  • Page 2: Table Of Contents

    Content Part. 1 General information ....1 Part. 2 Indoor Unit ......6 Part. 3 Outdoor Unit ......48 Part. 4 Installation ......67 Part. 5 Wired controller ....104...

  • Page 3: Part. 1 General Information

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Part. 1 General information 1. Model Names of Indoor/Outdoor Units ........2 2. External Appearance ............. 2 3. Nomenclature ............... 3 4. Product features ..............4...

  • Page 4: Model Names Of Indoor/Outdoor Units

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 1. Model Names of Indoor/Outdoor Units Nominal Indoor unit Outdoor unit Capacity Model Power supply Model Power supply 1.5ton MTA-18WN1 220-240V~, 50Hz, 1Ph MOVTB-18CN1-13C 220-240V~, 50Hz, 1Ph 2ton MTA-24WN1 220-240V~, 50Hz, 1Ph...

  • Page 5: Nomenclature

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 2.2 Outdoor unit 3. Nomenclature 3.1 Indoor unit: M T A – 18 W N1 Refrigerant Type - N1: R410A Control Type: Wired controller Nominal Cooling Capacity (18×1,000Btu/h) Series Number: A type...

  • Page 6: Product Features

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 4. Product features Indoor Unit General These duct type indoor units which capacity range is from 1.5ton to 5ton, are suitable for mounting above ceiling. The units are factory assembled, internally wired and tested before leaving the manufacture.
  • Page 7 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Casing Unit casing is constructed of zinc coated, heavy gauge, and galvanized steel. Exterior surfaces shall be cleaned, G90 galvanized heavy gauge plate conforming to ASTMA 653, followed by baked on electrostatic polyester dry powder coat paint on all external panels, completely weatherized for outdoor installation and properly reinforced and brazed.

  • Page 8: Part. 2 Indoor Unit

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Part. 2 Indoor Unit 1. Features ................7 2. Specifications ..............8 3. Dimensions ................ 19 4. Service Space ..............25 5. Refrigerant circuit .............. 25 6. Wiring Diagrams ..............26 7.

  • Page 9: Features

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 1. Features  Full capacity range: 1.5ton, 2ton, 3ton, 4ton and 5ton.  Suitable for using refrigerant R410A.  Tropical design with Copeland compressor.  Blue hydrophilic fin and inner grooved copper pipe.

  • Page 10: Specifications

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 2. Specifications Model MTA-18WN1 Matched outdoor unit MOVTB-18CN1-13C Power supply 220 - 240V~, 1Ph, 50Hz Btu/h 18,000 Capacity 5,274 Cooling (T1) Input 1,552 3.40 Btu/h.W 11.6 Btu/h 16,000 Capacity 4,690...
  • Page 11 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MTA-18WN1 Matched outdoor unit MOVTB-18CN1-13C Power wire (Indoor unit) 3×2.5mm Connecting wire Signal wire 2×0.75mm Ф25 Drain pipe size (OD) Controller Optional (220V signal reserved) Operation temperature ° C 18 - 30 Dimension (W×H×D)
  • Page 12 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Model MTA-24WN1 Matched outdoor unit MOVTB-24CN1-13C Power supply 220 - 240V~, 1Ph, 50Hz Btu/h 23,800 Capacity 6,975 Cooling (T1) Input 2,050 3.40 Btu/h.W 11.6 Btu/h 20,600 Capacity 6,038 Cooling (T3)
  • Page 13 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MTA-24WN1 Matched outdoor unit MOVTB-24CN1-13C Connecting Power wire (Indoor unit) 3×2.5mm wire Signal wire 2×0.75mm Ф25 Drain pipe size (OD) Controller Optional (220V signal reserved) Operation temperature ° C 18 - 30 Dimension (W×H×D)
  • Page 14 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Model MTA-36WN1 Matched outdoor unit MOVTB-36CN1-13C Power supply 220 - 240V~, 1Ph, 50Hz Btu/h 35,000 Capacity 10,258 Cooling (T1) Input 2,865 3.58 Btu/h.W 12.2 Btu/h 30,200 Capacity 8,851 Cooling (T3)
  • Page 15 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MTA-36WN1 Matched outdoor unit MOVTB-36CN1-13C Power supply 220 - 240V~, 1Ph, 50Hz Power wire (Indoor unit) 3×2.5mm Connecting wire Signal wire 2×0.75mm Ф25 Drain pipe size (OD) Controller Optional (220V signal reserved) Operation temperature °...
  • Page 16 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Model MTA-36WN1 Matched outdoor unit MOVTB-36CN1-R13C Power supply 220 - 240V~, 1Ph, 50Hz Btu/h 34,400 Capacity 10,082 Cooling (T1) Input 2,970 3.40 Btu/h.W 11.6 Btu/h 29,800 Capacity 8,734 Cooling (T3)
  • Page 17 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MTA-36WN1 Matched outdoor unit MOVTB-36CN1-R13C Power wire (Indoor unit) 3×2.5mm Connecting wire Signal wire 2×0.75mm Ф25 Drain pipe size (OD) Controller Optional (220V signal reserved) Operation temperature ° C 18 - 30 Dimension (W×H×D)
  • Page 18 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Model MTA-48WN1 Matched outdoor unit MOVTB-48CN1-R13C Power supply 220 - 240V~, 1Ph, 50Hz Btu/h 48,000 Capacity 14,068 Cooling (T1) Input 4,140 3.40 Btu/h.W 11.6 Btu/h 41,500 Capacity 12,163 Cooling (T3)
  • Page 19 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MTA-48WN1 Matched outdoor unit MOVTB-48CN1-R13C Power wire (Indoor unit) 3×2.5mm Connecting wire Signal wire 2×0.75mm Ф25 Drain pipe size (OD) Controller Optional (220V signal reserved) Operation temperature ° C 18 - 30 Dimension (W×H×D)
  • Page 20 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Model MTA-60WN1 Matched outdoor unit MOVTB-60CN1-R13C Power supply 220 - 240V~, 1Ph, 50Hz Btu/h 57,000 Capacity 16,706 Cooling (T1) Input 4,870 3.43 Btu/h.W 11.7 Btu/h 50,000 Capacity 14,654 Cooling (T3)

  • Page 21: Dimensions

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MTA-60WN1 Matched outdoor unit MOVTB-60CN1-R13C Power wire (Indoor unit) 3×2.5mm Connecting wire Signal wire 2×0.75mm Ф25 Drain pipe size (OD) Controller Optional (220V signal reserved) Operation temperature ° C 18 - 30 Dimension (W×H×D)
  • Page 22 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Top view Left side view...
  • Page 23 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-24WN1, MTA-36WN1 (Unit: mm) Air outlet side view Air inlet side view Top view...
  • Page 24 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Left side view (Unit: mm) Outline dimension Air outlet opening size Model MTA-24WN1 1,140 1,230 MTA-36WN1 1,140 1,230 (Unit: mm) Air return opening size Size of mounted lug Fresh air inlet Model Φ125...
  • Page 25 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-48WN1, MTA-60WN1 (Unit: mm) Air outlet side view Air inlet side view Connecting pipe side view...
  • Page 26 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Top view A view...

  • Page 27: Service Space

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 4. Service Space Top view 5. Refrigerant circuit...

  • Page 28: Wiring Diagrams

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 6. Wiring Diagrams MTA-18WN1 (Other thermostat with 220V signal)
  • Page 29 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-24WN1 (Other thermostat with 220V signal)
  • Page 30 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-36WN1 (Other thermostat with 220V signal)
  • Page 31 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-48WN1 (Other thermostat with 220V signal)
  • Page 32 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-60WN1 (Other thermostat with 220V signal)
  • Page 33 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-24WN1 (Factory default thermostat with 5V signal) (Customized)
  • Page 34 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-36WN1 (Factory default thermostat with 5V signal) (Customized)
  • Page 35 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-48WN1 (Factory default thermostat with 5V signal) (Customized)
  • Page 36 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-60WN1 (Factory default thermostat with 5V signal) (Customized)

  • Page 37: Capacity Table

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 7. Capacity Table MTA-18WN1 + MOVTB-18CN1-13C Indoor Outdoor IWB (° C) 15.0 17.2 19.4 21.7 air flow Temp. (DB) IDB (° C) 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4 21.1...
  • Page 38 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-24WN1 + MOVTB-24CN1-13C IWB (° C) 15.0 17.2 19.4 21.7 Indoor Outdoor air flow Temp. (DB) IDB (° C) 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4...
  • Page 39 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-36WN1 + MOVTB-36CN1-13C IWB (° C) 15.0 17.2 19.4 21.7 Indoor Outdoor air flow Temp. (DB) IDB (° C) 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4...
  • Page 40 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-36WN1 + MOVTB-36CN1-R13C IWB (° C) 15.0 17.2 19.4 21.7 Indoor Outdoor air flow Temp. (DB) IDB (° C) 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4...
  • Page 41 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-48WN1 + MOVTB-48CN1-R13C IWB (° C) 15.0 17.2 19.4 21.7 Indoor Outdoor air flow Temp. (DB) IDB (° C) 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4...
  • Page 42 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-60WN1 + MOVTB-60CN1-R13C IWB (° C) 15.0 17.2 19.4 21.7 Indoor Outdoor air flow Temp. (DB) IDB (° C) 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4 21.1 23.9 26.7 29.4...

  • Page 43: Fan Performance

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 8. Fan performance MTA-18WN1 In.H 0.05 0.15 0.25 0.35 12.5 24.9 37.4 49.8 62.3 74.7 87.2 Medium volume 1,003 High 1,306 1,219 1,125 1,029 Notes: ESP: External static pressure. The values are based the unit with filter operating under cooling mode.
  • Page 44 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-24WN1 In.H 0.05 0.15 0.25 0.35 12.5 24.9 37.4 49.8 62.3 74.7 87.2 99.6 1,450 1,394 1,338 1,287 1,236 1,178 1,120 1,057 Medium volume 1,671 1,601 1,530 1,472 1,414 1,352...
  • Page 45 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-36WN1 In.H 0.05 0.15 0.25 0.35 12.5 24.9 37.4 49.8 62.3 74.7 87.2 99.6 1,671 1,601 1,530 1,472 1,414 1,352 1,287 1,212 1,137 1,113 1,069 1,025 Medium volume 1,892 1,817...
  • Page 46 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-48WN1 In.H 0.05 0.15 0.25 0.35 12.5 24.9 37.4 49.8 62.3 74.7 87.2 1,502 1,470 1,437 1,405 1,372 1,340 1,306 1,272 2,553 2,499 2,443 2,389 2,332 2,278 2,220 2,162 1,629...
  • Page 47 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-60WN1 In.H 0.05 0.15 0.25 0.35 12.5 24.9 37.4 49.8 62.3 74.7 87.2 1,629 1,597 1,566 1,529 1,492 1,459 1,421 1,386 2,769 2,715 2,662 2,599 2,536 2,480 2,415 2,356 1,774...

  • Page 48: Electric Characteristics

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 9. Electric Characteristics Indoor Unit Power Supply Model Voltage Min. Max. MTA-18WN1 220-240V 198V 254V 0.67 0.144 0.67 MTA-24WN1 220-240V 198V 254V 1.53 0.332 1.53 MTA-36WN1 220-240V 198V 254V 0.393 1.80...

  • Page 49: Accessories

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 11. Accessories Name Qty. Purpose Installation manual Pipe insulation material Heat insulation Water outlet joint For drainage Chucking the joint which connect Clap the drain hose and the outlet of...

  • Page 50: Part. 3 Outdoor Unit

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Part. 3 Outdoor Unit 1. Specifications ..............49 2. Dimension ................. 61 3. Service Space ..............62 4. Wiring Diagrams ..............63 5. Electric Characteristics ............66 6. Sound Levels ..............66...

  • Page 51: Specifications

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 1. Specifications Model MOVTB-18CN1-13C Power supply 220 - 240V~, 1Ph, 50Hz Ambient temperature in cooling ° C 17 - 54 Rated input 2,400 Rated current 11.5 Model ZP20KSE-PFZ-522 Type Scroll...
  • Page 52 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Continued: Model MOVTB-18CN1-13C Power wire (Outdoor unit) 3×2.5mm Connection wire Signal wire 2×0.75mm Dimension (W×H×D) 554×633×554 Packing (W×H×D) 585×662×582 Net / Gross weight 55/58 Notes: 1. The nominal T1 cooling capacities are based on the following conditions: Indoor temperature: 27°...
  • Page 53 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MOVTB-24CN1-13C Power supply 220 - 240V~, 1Ph, 50Hz Ambient temperature in cooling ° C 17 - 54 Rated input 3,000 Rated current 14.5 Model ZP25KSE-PFZ-522 Type Scroll Quantity Brand...
  • Page 54 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Continued: Model MOVTB-24CN1-13C Power wire (Outdoor unit) 3×2.5mm Connection wire Signal wire 2×0.75mm Dimension (W×H×D) 600×633×600 Packing (W×H×D) 628×662×628 Net / Gross weight 59/62 Notes: 1. The nominal T1 cooling capacities are based on the following conditions: Indoor temperature: 27°...
  • Page 55 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MOVTB-36CN1-13C Power supply 220 - 240V~, 1Ph, 50Hz Ambient temperature in cooling ° C 17 - 54 Rated input 4,000 Rated current Model ZP36KSE-PFZ-522 Type Scroll Quantity Brand Copeland...
  • Page 56 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Continued: Model MOVTB-36CN1-13C Power wire (Outdoor unit) 3×4.0mm Connection wire Signal wire 2×0.75mm Dimension (W×H×D) 710×759×710 Packing (W×H×D) 738×779×738 Net / Gross weight 86/90 Notes: 1. The nominal T1 cooling capacities are based on the following conditions: Indoor temperature: 27°...
  • Page 57 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MOVTB-36CN1-R13C Power supply 380-415V~, 50Hz, 3Ph Ambient temperature in cooling ° C 17 - 54 Rated input 4,000 Rated current Model ZP36KSE-TFM-522 Type Scroll Quantity Brand Copeland Capacity Btu/h...
  • Page 58 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Continued: Model MOVTB-36CN1-R13C Power wire (Outdoor unit) 5×2.5mm Connection wire Signal wire 2×0.75mm Dimension (W×H×D) 710×759×710 Packing (W×H×D) 738×779×738 Net / Gross weight 81/85 Notes: 1. The nominal T1 cooling capacities are based on the following conditions: Indoor temperature: 27°...
  • Page 59 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MOVTB-48CN1-R13C Power supply 380-415V~, 50Hz, 3Ph Ambient temperature in cooling ° C 17 - 54 Rated input 6,000 Rated current Model ZP51KSE-TFM-522 Type Scroll Quantity Brand Copeland Capacity Btu/h...
  • Page 60 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Continued: Model MOVTB-48CN1-R13C Power wire (Outdoor unit) 5×2.5mm Connection wire Signal wire 2×0.75mm Dimension (W×H×D) 710×843×710 Packing (W×H×D) 738×862×738 Net / Gross weight 89/93 Notes: 1. The nominal T1 cooling capacities are based on the following conditions: Indoor temperature: 27°...
  • Page 61 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Model MOVTB-60CN1-R13C Power supply 380-415V~, 50Hz, 3Ph Ambient temperature in cooling ° C 17 - 54 Rated input 7,450 Rated current Model ZP61KCE-TFD-522 Type Scroll Quantity Brand Copeland Capacity Btu/h...
  • Page 62 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Continued: Model MOVTB-60CN1-R13C Power wire (Outdoor unit) 5×2.5mm Connection wire Signal wire 2×0.75mm Dimension (W×H×D) 740×843×740 Packing (W×H×D) 768×862×768 Net / Gross weight 98/102 Notes: 1. The nominal T1 cooling capacities are based on the following conditions: Indoor temperature: 27°...

  • Page 63: Dimension

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 2. Dimension Dimensions Refrigerant connection valve size Model H (mm) W (mm) L (mm) Liquid (mm) Gas (mm) Φ9.52 Φ19.1 MOVTB-18CN1-13C Φ9.52 Φ19.1 MOVTB-24CN1-13C Φ9.52 Φ19.1 MOVTB-36CN1-13C Φ9.52 Φ19.1 MOVTB-36CN1-R13C Φ9.52...

  • Page 64: Service Space

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 3. Service Space...

  • Page 65: Wiring Diagrams

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 4. Wiring Diagrams MOVTB-18CN1-13C:...
  • Page 66 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MOVTB-24CN1-13C, MOVTB-36CN1-13C:...
  • Page 67 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MOVTB-36CN1-R13C, MOVTB-48CN1-R13C, MOVTB-60CN1-R13C:...

  • Page 68: Electric Characteristics

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 5. Electric Characteristics Outdoor Unit Power Supply Compressor Model Voltage Min. Max. TOCA MOVTB-18CN1-13C 220-240V 198V 254V 0.085 0.68 MOVTB-24CN1-13C 220-240V 198V 254V 14.5 25.7 11.2 0.085 0.68 MOVTB-36CN1-13C 220-240V...

  • Page 69: Part. 4 Installation

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Part. 4 Installation 1. Notes ................. 68 2. Installation of the Indoor Units ........... 71 3. Installation of Outdoor Units ..........78 4. Connection of Refrigerant Pipe .......... 83 5. Heat Insulation of Refrigerant Pipe ........87 6.

  • Page 70: Notes

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 1. Notes WARNING:  Failure to observe a warning may result in death.  Be sure only trained and qualified service personnel to install, repair or service the equipment. Improper installation, repair and maintenance may result in electric shocks, short-circuit, leaks, fire or other damage to the equipment.
  • Page 71 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707  If the power wire is damaged, it must be replaced by the manufacture or its service agent or similarly qualified person in order to avoid a hazard.  An all-pole disconnection switch having a contact separation of at least 3mm in poles should be connected in fixed wiring.
  • Page 72 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz  Connect the outdoor unit wires, and then connect the indoor unit wires. You are not allowed to connect the air conditioner with the power source until wiring and piping of the air conditioner is done.

  • Page 73: Installation Of The Indoor Units

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707  Installation the connecting pipe  Connect the drain pipe;  Wiring;  Test operation.  At delivery, the package of indoor and outdoor units should be checked and any damage should be reported immediately to the service agent.
  • Page 74 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz the specific procedures.  Cut off the roof beam. Strengthen the place cut off, and consolidate the roof beam.  Carry out the pipe and line operation in the ciling after finishing the installation of the main body.
  • Page 75 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-48WN1, MTA-60WN1: (Unit: mm)  When the pandant bolt is fixed in wooden structure, please put the square timber traversely over the roof beam, then install the hanging screw boltes.
  • Page 76 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz  For steel roof beam structre, install and use directly the supporting angle steel.  Overhang the indoor unit onto the hanging screw bolts with block. Position the indoor unit in a float level by using the level indicator, otherwise it may cause water leakage.
  • Page 77 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-18WN1 (Unit: mm) View of air outlet side View of air inlet side from rear (Default) View of air inlet side from down (Optional) MTA-24WN1, MTA-36WN1 (Unit: mm) View of air outlet side...
  • Page 78 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz View of air inlet side from rear (Default) View of air inlet side from down (Optional) MTA-48WN1, MTA-60WN1 (Unit: mm) View of air outlet side...
  • Page 79 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 View of air inlet side 2.3 Install the drainage pipe  In order to prevent faults caused by condensate of the refrigerant pipe and drain pipe, perform condensate prevention and heat insulation properly.

  • Page 80: Installation Of Outdoor Units

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz  In case of prolonged drainage pipe, you had beeter tighten its indoor part with a protection tube to prevent it from loosing.  The end of the drainage pipe should be over 50mm higher than the ground or the bottom of the drainage chute, and do not immerse it in water.
  • Page 81 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707  If the supply cord is damaged, it must be replaced by the manufacture or its service agent or a similarly qualified person in order to avoid a hazard. ...
  • Page 82 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz clearance for air entrance to the condenser coil, for air discharge and for service access. Notes: L1=1,000mm, L2=915mm.  For multiple unit installations, units must be spaced a minimum of 915mm apart. (Coil face to face.
  • Page 83 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 strain on the refrigerant lines and possible leaks.  Install the unit in a level position.  Normal operating sound levels may be objectionable if the unit is placed directly under windows of certain rooms, such as bedrooms, study rooms.
  • Page 84 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz proper oil return.  Factory-preferred tie-down method:  Prior to installing clear pad of debris. Then cement pad must meet local codes and must be the proper thickness to accommodate fasteners.

  • Page 85: Connection Of Refrigerant Pipe

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 4. Connection of Refrigerant Pipe  Refrigerant pipe sizing between indoor and outdoor unit. Liquid Line Size - Outdoor unit higher than indoor unit Total Equivalent Length (m) Model Liquid /gas pipe (mm) 7.62...
  • Page 86 Incomplete insulation may cause water condensation.  For MTA-18WN1, after connecting two pipes with copper nuts which are packed in indoor unit accessory to indoor unit, another pipe packed in indoor unit accessory should be welded with the gas connecting pipe of indoor unit.
  • Page 87 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707  Braze the liquid line to the liquid valve at the outdoor unit. Be sure to wrap the valve body with a wet rag. Allow the nitrogen to continue flowing. Refer to the refrigerant pipe size list for proper liquid line sizing.
  • Page 88 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz filter.  Care must also be taken to isolate the refrigerant pipes to minimize noise transmission from the unit the structure.  The suction line must be insulated. Tape and suspend the refrigerant lines as shown in following figure.

  • Page 89: Heat Insulation Of Refrigerant Pipe

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707  Repair the leak and test again.  To verify that the system has no leaks, simply close the valve to the vacuum pump suction to isolate the pump and hold the system under vacuum. Watch the micron gauge for a few minutes.

  • Page 90: Electric Connection

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz and drainage pipe to prevent water leak. 6. Electric Connection 6.1 Caution  Power supply of indoor unit and outdoor unit must be within normal voltage range.  Power wiring, control wiring, disconnect switches and over-current protection must be supplied by the installer.
  • Page 91 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 general, it is not allowed to parallel connection two wires, unless welding joint is well welded and wrapped with insulating tape.  Every pole of the all-pole disconnection device should have at least 3mm separation distance and a leakage protector with the rating current above 10mA shall be installed together when wiring.

  • Page 92: Schematic Diagram

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Model MOVTB-36CN1-R13C MOVTB-48CN1-R13C MOVTB-60CN1-R13C Power supply 380-415V~, 3Ph, 50Hz 380-415V~, 3Ph, 50Hz 380-415V~, 3Ph, 50Hz Circuit breaker / Fuse 15A/15A 20A/20A 25A/25A Power supply cable 5×2.5mm 5×2.5mm 5×2.5mm Connective wire of indoor 2×0.75mm...
  • Page 93 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 MTA-18WN1 + MOVTB-18CN1-13C MTA-24WN1 + MOVTB-24CN1-13C, MTA-36WN1 + MOVTB-36CN1-13C...

  • Page 94: Trial Run

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MTA-36WN1 + MOVTB-36CN1-R13C, MTA-48WN1 + MOVTB-48CN1-R13C MTA-60WN1 + MOVTB-60CN1-R13C 7. Trial Run The trial run must be carried out after the entire installation has been completed. Please confirm the following points before the trial run: ...

  • Page 95: Trouble Shooting

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 8. Trouble shooting  Outdoor unit’s malfunction and protection codes Content LED1 LED2 LED3 Power supply phase sequence error Flashing Extinguished Extinguished Lack of Phase A, B of power supply...
  • Page 96 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz  Low pressure protection Notes: Low pressure protection is triggered 3 times in 20 minutes, the units should be repower again to reset the unit.
  • Page 97 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707  Over-current protection of compressor  Communication error (Reserved)  Pipe temperature sensor (T3) error & Ambient temperature sensor (T4) error...
  • Page 98 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz  High pressure protection & Discharge temperature protection...
  • Page 99 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707  High temperature of condenser protection  There is only one temperature is fixed in the indoor units with other thermostat, so these indoor units without PCB board have not any error or protection code to display.
  • Page 100 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Content Display content Pipe temperature sensor (T2) error Operation lamp flashing Room temperature sensor (T1) error Timer lamp flashing Eeprom error Operation and timer lamp flashing  Operation lamp flashing: Pipe temperature sensor (T2) error ...

  • Page 101: Maintenance

    Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 9. Maintenance 9.1 Operation required before leaving the unit idle for a long period.  Let the air conditioner run in the fan mode for about half a day, and let its interior be fully dry.
  • Page 102 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz  Take off the motor.  Clean the evaporator and fan, or change the indoor motor. 9.4 Tray maintenance (Only available for Model: 48 and 60 indoor unit)  Shut down the unit and cut off power supply before maintain.
  • Page 103 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 removed first, as well as connective wires between motor and capacity of motor assembly.  Fan motor subassembly is very heavy, please be careful during maintaining, otherwise physical injury would be caused.
  • Page 104 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz  After motor maintenance, re-install the fan motor assembly as per reverse above orders, and connect the motor with electric control box, as well as motor with power cable of motor capacity.
  • Page 105 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 conditioner will be degraded. Therefore, clean it often if the air conditioner already has been used for a long period. If the indoor unit is installed in a place with heavy dust, clean the filter more often.

  • Page 106: Part. 5 Wired Controller

    MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Part. 5 Wired controller 1. Wired Controller: KJR-12B/DPC(T)-E (Customized) ..105 2. Wired Controller: KJR-29B1/BK-E (Customized) ………….115...
  • Page 107 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 1. Wired Controller: KJR-12B/DPC(T)-E (Customized) KJR-12B/DPC(T)-E 1.1 Remote controller specifications Model KJR-12B/DBC(T)-E Power supply voltage 5.0V DC Ambient temperature range -15° C～43° C Ambient humidity range RH40%~RH90% Performance Features 1. Operating mode: Cool, heat (Reserved), dry, fan and auto.
  • Page 108 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 1.2 Introduction of function buttons on the wired controller ① MODE button: It is used to select mode, push the button one time, then the operation modes will change in turn as follows: Notes: No heating mode is reserved.
  • Page 109 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 ▼ minute part flashes every 0.5 seconds, then push ▲ or to adjust minute. When set clock or alter clock setting, must push the OK button to complete the setting.
  • Page 110 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 1.3 Names and functions of indicators on wired controller ① Mode Display: Press MODE button can select ‘AUTO’, COOL’, ‘DRY’, ‘HEAT’ and ‘FAN’ mode. Notes: HEAT is reserved. ② Fan Speed Display: Press FAN SPEED to select fan speed from ‘AUTO’, ‘LOW’, ‘MED’, to ‘HIGH’.
  • Page 111 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 1.4 Operating the wired controller AUTO Operation ※ Insert the power supply of indoor unit, and operation lamp of indoor unit will flash. ※ Push MODE to select AUTO. ※ Set the desired temperature by pushing the TEMP ▲ and TEMP ▼, usually the temperature range is set from 17°...
  • Page 112 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz ※ Push the ON/OFF, the operation lamp of indoor unit lights, and the air conditioner will start to dehumidify. ※ Press the ON/OFF again, stop the air conditioner. Notes: The FAN SPEED and ECONOMICAL buttons are invalid in the dry mode.
  • Page 113 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 ※ Push button TIME OFF again, and then adjust the time of timer off as desired. ※ When set the timer on and timer off simultaneously, if the setting times of timer on and timer off are less than 10 hours, then timer off time will always 0.5 hours later than the...
  • Page 114 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz ※ After enter into the setting interface, the temperature display area will display YX. Y means the first function code, and X means the second function code, details refer to the up table.
  • Page 115 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 1.5 Wired controller installation  Accessory of wired controller Accessory name Quantity Remarks Wired controller With cover. Wood mounting screw M4×20, for mounting on the wall. Mounting screw M4×25, for mounting on the electrical switch box.
  • Page 116 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz ※ Turn a screwdriver at the concave on bottom panel of the wired controller to remove the back cover. ※ Fix the back cover on the wall or switch box according to the following picture. When...
  • Page 117 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 2. Wired Controller: KJR-29B1/BK-E (Customized) KJR-29B1/BK-E 2.1 Wired controller specifications Model KJR-29B1/BK-E Power Supply Voltage 5.0V DC Ambient Temperature Range -5° C～43° C Ambient Humidity Range RH40%~RH90% Performance Features 1. Operating mode: Cool, heat, dry, fan and auto.
  • Page 118 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz 2.2 Wired controller outlook 2.3 Operation instructions 1) Remote signal receiving function: the wired controller can be a remote signal receiving device, it is possible to use the wireless remote controller to control the air conditioner through the wired controller when the system have been powered on.
  • Page 119 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 3) Set the operating mode Press the mode button to set the operating mode, after each button press the operating mode will circle as follow: 4) Fan speed setting Under COOL, HEAT and FAN modes, press the fan speed button can adjust the fan speed setting.
  • Page 120 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Under the timer on setting status, press the timer/clock setting button , then enter into the timer off setting status, and the screen will display The setting method of timer off is the same as the timer on.
  • Page 121 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Simultaneously press the temperature adjusting buttons again can cancel the locking state. 10) Air filter cleaning reminding function The wired controller records the total running time of the indoor unit, when the accumulated...
  • Page 122 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz  Installation by other persons may lead to imperfect installation, electric shock or fire. Improper installation may lead to electric shock or fire. A random disassembly may cause abnormal operation or heating, which may result in fire.
  • Page 123 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 4) Installation procedure  The installation manual contains information about the procedure of installing wired controller. Please refer to indoor unit installation manual for connecting between wired controller and indoor unit.
  • Page 124 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz  Wiring principle sketch:  Wiring figure: Connect two terminals of embedded 4-core shielding wire with the switching wires of wired controller and signal receiving board. Make sure the sequence of 4 terminals (A, B, C and D) should correspond to the wire sequence of signal switching wires (A, B, C and D).
  • Page 125 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707 Use three M4×20 screws to directly install the back cover on the wall. Use two M4×25 screws to install the back cover on the 86 electrician box, and use one M4×20 screws for fixing on the wall.
  • Page 126 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz Over fasten the screw will lead to deformation of back cover.  Neaten the wires of the wired controller There are three positions of signal wire outlet around the wired controller, when the wired controller directly is installed on the flat wall.
  • Page 127 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz MCAC-UTSM-201707  Wired controller’s front cover installation: After adjusting the front cover and then buckle the front cover. Avoid clamping the communication switching wire during installation. Correct install the back cover and firmly buckle the front cover and back over, otherwise will make the front cover drop off.
  • Page 128 MCAC-UTSM-201707 Midea Tropical R410A High Efficient Duct Technical Manual 50Hz The parameter setting table First Second code Function code Cooling-only/Heat pump Cooling Heat pump (Default) selection only Indoor unit communication Yes (Default) None address setting Power-off memory Yes (Default) None...
  • Page 129 MCAC-UTSM-201707 Commercial Air Conditioner Division Midea Group Add.: Midea Headquarters Building, 6 Midea Avenue, Shunde, Foshan, Guangdong, China Postal code: 528311 Midea CAC After-service Application Midea CAC News Application Tel: +86-757-26338346 Fax: +86-757-22390205 cac.midea.com global.midea.com Note: Product specifications change from time to time as product improvements and developments are released and may vary from those in this document.

This manual is also suitable for:

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