Midea MGB Series User Manual
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Midea MGB Series User Manual

Air-cooled modular chiller unit 50hz
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Air-cooled modular chiller unit 50Hz
1 General information ................................................................................ 3
2. Features ................................................................................................... 5
3. Specification ........................................................................................... 9
4 Dimension .............................................................................................. 21
5 Refrigeration system drawing .............................................................. 33
6. Piping diagram ...................................................................................... 36
7 Wiring diagrams..................................................................................... 42
8 Electric characteristics ......................................................................... 56
9 Capacity tables ...................................................................................... 58
10 Exploded view ...................................................................................... 74
11 Troubleshooting ................................................................................... 96
12 Installation .......................................................................................... 108
13 Commissioning .................................................................................. 132
14 Maintenance ....................................................................................... 135
15 Control system .................................................................................. 137
Appendix ................................................................................................. 174
2
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MCAC-ATSM-2011-12

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  • Page 1: Table Of Contents

    Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Content 1 General information ................3 2. Features ....................5 3. Specification ................... 9 4 Dimension ....................21 5 Refrigeration system drawing .............. 33 6. Piping diagram ..................36 7 Wiring diagrams..................42 8 Electric characteristics ................. 56 9 Capacity tables ..................

  • Page 2: General Information

    MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 1 General information 1.1Nomenclature M G C T S L - D 60 W / R N1 - A Design Serial Number Refrigerant type N1:R410A Omit for R22 Power Supply R: 380~415V, 50Hz, 3N D: 220V, 60Hz, 3N Outdoor Unit Rated cooling capacity (kw)
  • Page 3 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 1.3 External appearance: 25/30KW module New 30KW module 55/60/65KW module 130KW module 250KW module 185KW module...

  • Page 4: Features

    MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 2. Features 1). Low ambient temperature cooling function (Only for MGCSL-F30W/RN1 and MGCSL-D30W/RN1) The ambient temperature is down to -10℃ in cooling mode, the cooling operating temperature up to 52˚C in tropical model and heating down to -10˚C ambient by added one board (see picture1). Wide ambient temperature range is selectable by adjustable address between different conditions to meet different requirements.
  • Page 5 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 4).Humanization remote control (For MGCSL-F(D)30W/RN1 ,MGB-D65W/RN1, MGB-F250W/RN1) S7 address on PCB should be switched to ON to realize remote control, here are reliable: Remote ON/OFF, remote heating and cooling mode selection, remote alarm. The customer can simply and conveniently control the module and acquire the running information on real time in door.
  • Page 6 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 8).Environmental care Ecological R410A refrigerant. Chlorine-free and environmental friendly refrigerant, zero ozone depletion potential. High density refrigerant, therefore, less refrigerant required. Leak-tight refrigerant circuit, Brazed refrigerant connections for increased leak-tightness. 9) Economical operation New design adopts electronic expansion valve precise refrigerant control in wider range. Electronic expansion valve allows operation at lower condensing pressure, adjustment can be made fast linear response, making the system more stable output, the indoor temperature more uniform, and enhance human comfortable.
  • Page 7 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Evaporator of 25KW and 30KW module adopts tube in tube heat exchanger， evaporator of 60kw ,120kw and 180kw modules adopt Shell and tube heat exchanger. Tube in tube heat exchanger Shell and tube heat exchanger 14).

  • Page 8: Specification

    MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 3. Specification Model MGB-F25W/RN1 MGB-F30W/RN1 Cooling Capacity Btu/h 95,500 102,300 Heating Capacity 29.5 Power supply V/Ph/Hz 380-415/3/50 Manual switch Power supply Fuse Type Scroll (constant speed) Quantity Pieces Model ZP67KCE-TFD-522 Brand Copeland Compressor Capacity 16200×2 Input 5200×2...
  • Page 9 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Operation weight Power wire ×No. 10×4+10×1 Connection wire Signal wire ×No. 0.75×3-core Control type Wired controller 1) Protection for over-high discharge pressure. 2) Protection for over-low suction pressure. 3) Power supply phase sequence protection. 4) Anti-frozen protection in cooling mode.
  • Page 10 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Model MGB-D25W/RN1 MGB-D30W/RN1 Cooling Capacity Btu/h 95,500 102,300 Heating Capacity 29.5 Power supply V/Ph/Hz 380-415/3/50 Manual switch Power supply Fuse Type Constant Speed Scroll + Digital Scroll Quantity Pieces ZP67KCE-TFD-522+ Model ZPD67KCE-TFD-532 Brand Copeland Compressor Capacity 16200+16200...
  • Page 11 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 1) Protection for over-high discharge pressure. 2) Protection for over-low suction pressure. 3) Power supply phase sequence protection. 4) Anti-frozen protection in cooling mode. 5) Anti-frozen protection in Winter. 6) Protection for compressor over current. Safety protection device 7) Protection for compressor overload.
  • Page 12 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Model MGCSL-F30W/RN1 MGCSL-D30W/RN1 Cooling Capacity Btu/h 102,300 102,300 Heating Capacity Power supply V/Ph/Hz 380-415/3/50 Manual switch Power supply Fuse Type Fixed speed Digital Scroll + Fixed speed Quantity Pieces ZPD67KCE-TFD-532/ Model ZP67KCE-TFD-522 ZP67KCE-TFD-522 Brand Copeland Compressor Capacity...
  • Page 13 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 1) Protection for over-high discharge pressure. 2) Protection for over-low suction pressure. 3) Power supply phase sequence protection. 4) Anti-frozen protection in cooling mode. 5) Anti-frozen protection in Winter. 6) Protection for compressor over current. 7) Protection for compressor overload.
  • Page 14 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Model MGB-F55W/RN1 MGB-F60W/RN1 MGB-F65W/RN1 Cooling Capacity Btu/h 187,660 204,700 221,780 Heating Capacity Power supply V/Ph/Hz 380-400/3/50 Manual switch Power supply Fuse Type Fixed speed Scroll Quantity Pieces Model SH140A4ALC Brand Danfoss Compressor Capacity 34700×2 Input 10860×2 Rate current(RLA)
  • Page 15 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Power wire ×No. 16×4+10 ×1 Connection wire Signal wire ×No. 0.75×3-core Control type Wired controller 1) Protection for over-high discharge pressure. 2) Protection for over-low suction pressure. 3) Power supply phase sequence protection. 4) Anti-frozen protection in cooling mode. 5) Anti-frozen protection in Winter.
  • Page 16 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Model MGB-D65W/RN1 MBG-F130W/R(S)N1 MGB-F185W/R(S)N1 Cooling Capacity Btu/h 221,780 443,560 631,220 Heating Capacity Power supply V/Ph/Hz 380-415/3/50 380-400/3/50 380-400/3/50 Manual switch Power supply Fuse Type Scroll (fixed speed+digital scroll) Fixed speed Scroll Fixed speed Scroll Quantity Pieces ZP144KCE-TFD-522 /...
  • Page 17 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Net weight 1150 1730 Weight Operation weight 1270 2000 Power wire ×No. 25×4+16×1 35×3+16×2 75×3+35 ×2 Signal wire ×No. 0.75×3-core 0.75×3-core Control type Wired controller Wired controller 1) Protection for over-high discharge pressure. 1) Protection for over-high discharge 2) Protection for over-low suction pressure.
  • Page 18 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Model MGBT-F250W/RN1 Cooling Capacity Btu/h 830,000 Heating Capacity Power supply V/Ph/Hz 380-400/3/50 Manual switch Power supply Fuse Type Scroll (fixed speed) Quantity Copeland Model SH120A4ALC Brand Copeland Compressor Capacity 111231 Input 10275 Rate current(RLA) 20.88 Locked rotor Amp(LRA) Cooling...
  • Page 19 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 1) Protection for over-high discharge pressure. 2) Protection for over-low suction pressure. 3) Power supply phase sequence protection. 4) Anti-frozen protection in cooling mode. 5) Anti-frozen protection in Winter. 6) Protection for compressor over current. 7) Protection for compressor overload.

  • Page 20: Dimension

    MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 4 Dimension 25/30kw module Front view Top view Unit Model 1514 1865 MGB-F(D)25W/RN1 MGB-F(D)30W/RN1 inch 59.6 33.11 73.43 4.53 12.4 6.77...
  • Page 21 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Name Top cover Air outlet Air inlet Water outlet Water inlet Electric control box...
  • Page 22 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 30KW new module (Only for MGCSL-F30W/RN1 and MGCSL-D30W/RN1) Front view Left view Top view...
  • Page 23 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Make-up NAME Air inlet Air outlet Water inlet Water outlet Drain water inlet...
  • Page 24 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 55/60/65KW module Front view Top view Unit Model MGB-F55W/RN1 2000 1880 1420 1500 MGB-F60W/RN1 MGB-F65W/RN1 MGB-D65W/RN1 inch 78.74 35.4 13.78 55.91 8.86 59.06 19.92 20.87 36.61 17.72...
  • Page 25 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Name Top cover Air outlet Air inlet Water outlet Compressor Electric control box Water inlet...
  • Page 26 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 130KW module Front view Side view Top view Anchor hole Unit Model 2000 1685 2080 1420 1550 1586 MGB-F130W/RN1 inch 78.74 66.34 81.89 13.78 55.91 19.92 61.02 62.44...
  • Page 27 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Name Top cover Condenser Compressor Evaporator Electric control box Air inlet Water outlet Water inlet Compressor...
  • Page 28 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 185KW module Model unit 2850 2000 2110 3470 2156 1888 2388 MGB-F185W/RN1 inch 112.2 78.74 83.07 136.61 84.88 19.92 74.33 94.02...
  • Page 29 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Name Top cover Compressor Evaporator Water outlet Electric control box Water inlet Condenser...
  • Page 30 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 250KW module Front view Left view Hole for anchor boltΦ15 Bottom view Model unit 3800 2000 2130 1235 2156 1888 1551 MGB-F250W/RN1 inch 149.6 78.74 83.86 48.62 84.88 22.56 74.33 61.06...
  • Page 31 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Air outlet Air outlet Air outlet Air outlet Air inlet Name Top cover Compressor Evaporator Water outlet Electric control box Water inlet Condenser Transportation guard plate (Be removed off after installation)

  • Page 32: Refrigeration System Drawing

    MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 5 Refrigeration system drawing 5.1 25/30KW module refrigeration system sketch drawing Each module has two compressors with two separate units, one double-pipe evaporator for two systems. 4-way valve A Condenser 4-way valve B Compressor A Compressor B Water inlet Water outlet...
  • Page 33 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 65KW digital module refrigeration system sketch drawing (MGB-D65W/RN1) Each module has three compressors with two separate units, one shell and tube evaporator for two systems. Pressure switch low pressure cylinder B Compressor B 4-Way valve B Pressure switch Discharge switch Fan B...
  • Page 34 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 5.4 185KW module refrigeration system sketch drawing Each module has six compressors with three separate units, one shell and tube evaporator for six systems. low pressure cylinder B Unit 2 4-Way valve B 3" Compressor B Fan B Fan A...

  • Page 35: Piping Diagram

    Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 6. Piping diagram 6.1 25/30KW module water pipeline sketch drawing The table below describes the symbols. Symbol Symbol explanation Symbol Symbol explanation Stop valve Y-shaped filter Pressure gauge Thermometer Water flow switch Circulating pump Gate valve Check valve Flexible joint...
  • Page 36 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 30KW module water pipeline sketch drawing auto-air exchanse valve Fan coil unit Fan coil unit 2-way valve Expansion tank Fan coil unit Y-shaped filiter Flexible joint Water-flow valve Water pump Water replenishing valve 2-way valve 1.5kg<Water replenishing pres<6kg Fan coil unit Flexible joint...
  • Page 37 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 6.2 55/60/65kw&(65kw digital) module water pipeline sketch drawing DN100 The table below describes the symbols. Symbol Symbol explanation Symbol Symbol explanation Stop valve Y-shaped filter Pressure gauge Thermometer Water flow switch Circulating pump Gate valve Check valve Flexible joint Automatic discharge valve...
  • Page 38 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 6.3 130KW module water pipeline sketch drawing The table below describes the symbols. Symbol Symbol explanation Symbol Symbol explanation Stop valve Y-shaped filter Pressure gauge Thermometer Water flow switch Circulating pump Gate valve Check valve Flexible joint Automatic discharge valve...
  • Page 39 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 6.4 185KW module water pipeline sketch drawing The table below describes the symbols. Symbol Symbol explanation Symbol Symbol explanation Stop valve Y-shaped filter Pressure gauge Thermometer Water flow switch Circulating pump Gate valve Check valve Flexible joint Automatic discharge valve...
  • Page 40 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 6.5 250KW module water pipeline sketch drawing Expansion tank Water replenishing Main unit Dirt discharge valve Differential pressure by-pass valve Terminal Drain valve Two-way valve Auxiliary electric heater Three-way valve The table below describes the symbols. Symbol Symbol explanation Symbol...

  • Page 41: Air-Cooled Modular Chiller Unit 50Hz Mcac-Atsm

    Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 7 Wire Diagrams 7.1 Chiller wiring diagram 25/30KW module...
  • Page 42 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 30KW new module Only for MGCSL-F30W/RN1 and MGCSL-D30W/RN1)
  • Page 43 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 55/60/65KW module...
  • Page 44 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 65KW digital module(Only for MGB-D65W/RN1)
  • Page 45 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 130KW module...
  • Page 46 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 185KW module...
  • Page 47 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 250KW module...
  • Page 48 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 7.2 Networking communication schematic of main unit and auxiliary unit 25/30KW module...
  • Page 49 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 30KW new module Only for MGCSL-F30W/RN1 and MGCSL-D30W/RN1)
  • Page 50 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 55/60/65KW module...
  • Page 51 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 65KW digital Mmodule(Only for MGB-D65W/RN1)
  • Page 52 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 130KW module...
  • Page 53 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 185KW module...
  • Page 54 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 250KW module...

  • Page 55: Electric Characteristics

    Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 8 Electric Characteristics Outdoor Unit Power Supply Compressor Model Voltage Min. Max. TOCA MGB-F25W/RN1 380-415 21.3 74(×2) 9.1(×2) 0.67 MGB-D25W/RN1 380-415 21.3 74(×2) 9.1(×2) 0.67 MGB-F30W/RN1 380-415 22.6 74(×2) 9.1(×2) 0.67 MGB-D30W/RN1 380-415 22.6 74(×2) 9.1(×2) 0.67...

  • Page 56: Capacity Tables

    Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 9 Capacity Tables 9.1 MGB-F(D)25W/RN1 Cooling: Ambient temp.(℃) Chilled water outlet 21.00 25.00 30.00 35.00 40.00 46.00 temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 5.00 31.35 8.19 29.52 8.44 27.85...
  • Page 57 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Heating: Ambient temp.(℃) Hot water outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 39.00 18.34 5.76 22.92 6.54 26.97 7.27 29.96 7.90 32.57 8.32 36.47 8.82 41.95 9.52...
  • Page 58 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 9.2 MGB-F(D)30W/RN1 Cooling: Ambient temp.(℃) Chilled water 21.00 25.00 30.00 35.00 40.00 46.00 outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 5.00 33.59 8.81 31.63 9.08 29.84 9.36 28.20 9.65...
  • Page 59 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Heating: Ambient temp.(℃) Hot water outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 39.00 19.89 6.13 24.86 6.97 29.25 7.74 32.50 8.42 35.33 8.86 39.57 9.39 45.50 10.14...
  • Page 60 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 9.3 MGB-F55W/RN1 Cooling: Ambient temp.(℃) Chilled water 21.00 25.00 30.00 35.00 40.00 46.00 outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 5.00 61.58 15.41 57.98 15.89 54.70 16.38 51.70 16.89...
  • Page 61 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Heating: Ambient temp.(℃) Hot water outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 39.00 40.40 11.45 45.84 13.01 53.93 14.46 59.92 15.71 65.13 16.54 72.95 17.53 83.89 18.94...
  • Page 62 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 9.4 MGB-F60W/RN1 Cooling: Ambient temp.(℃) Chilled water 21.00 25.00 30.00 35.00 40.00 46.00 outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 5.00 67.17 17.00 63.25 17.52 59.67 18.07 56.40 18.62...
  • Page 63 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Heating Ambient temp.(℃) Hot water outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 39.00 39.78 12.39 49.73 14.08 58.50 15.64 65.00 17.00 70.65 17.90 79.13 18.97 91.00 20.49...
  • Page 64 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 9.5 MGB-F65W/RN1, MGB-D65W/RN1 Cooling Ambient temp.(℃) Chilled water 21.00 25.00 30.00 35.00 40.00 46.00 outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 5.00 72.77 17.97 68.52 18.52 64.64 19.10 61.10...
  • Page 65 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Heating: Ambient temp.(℃) Hot water outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 39.00 42.89 13.45 53.61 15.29 63.07 16.99 70.08 18.46 76.17 19.43 85.31 20.60 98.11 22.25...
  • Page 66 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 9.6 MGB-F130W/RN1 Cooling: Ambient temp.(℃) Chilled water 21.00 25.00 30.00 35.00 40.00 46.00 outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 5.00 145.54 35.93 137.04 37.05 129.29 38.19 122.20 39.37...
  • Page 67 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Heating: Ambient temp.(℃) Hot water outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 39.00 85.78 26.91 107.22 30.57 126.14 33.97 140.16 36.93 152.34 38.87 170.63 38.33 196.22 41.39...
  • Page 68 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 9.7 MGB-F185W/RN1 Cooling: Ambient temp.(℃) Chilled water 21.00 25.00 30.00 35.00 40.00 46.00 outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 5.00 207.12 55.49 195.03 57.20 183.99 58.97 173.90 60.80...
  • Page 69 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Heating: Ambient temp.(℃) Hot water outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 39.00 124.31 38.17 155.39 43.37 182.81 48.19 203.13 52.38 220.79 55.14 247.28 58.45 284.38 63.12...
  • Page 70 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 9.8 MGBT-F250W/RN1 Cooling: Ambient temp.(℃) Chilled water 21.00 25.00 30.00 35.00 40.00 46.00 52.00 outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 5.00 279.89 68.96 263.55 71.09 248.63...
  • Page 71 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Heating Ambient temp.(℃) water -10.00 -6.00 outlet temp. Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power Capacity Power (℃) 39.00 167.82 50.06 209.78 56.88 246.80 63.20 274.22 68.70 298.07 72.31 333.83 76.65 383.91...

  • Page 72: Exploded View

    Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 10 Exploded View 10.1 MGB-F25W/RN1 MGB-F30W/RN1...
  • Page 73 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Part Name Quantity Part Name Quantity Rear—front net underpan parts Condenser right seal board ass'y underpan bracket Double-pipe heat exchanger Reinforcement bracket Condenser right seal board ass'y E-part box ass'y Input pipe ass'y of B unit 27.1 Main control board ass'y Electronic expansion valve...
  • Page 74 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 10.2 MGB-D25W/RN1 MGB-D30W/RN1...
  • Page 75 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Part Name Quantity Part Name Quantity Rear—front net Underpan Underpan bracket Condenser right seal board ass'y reinforcement bracket Double-pipe heat exchanger E-part box ass'y Condenser right seal board ass'y 27.1 Main control board ass'y Input pipe ass'y of B unit 27.2 Relay...
  • Page 76 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 MGCSL-F30W/RN1...
  • Page 77 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Part Name BOM code Part Name BOM code Right seal plate condenser The door welding part of 201290190122 201290190224 components D electrical box The welding part of small 201590190014 201290190233 A condenser components baseplate 201295010078 201290190103 Motor holder...
  • Page 78 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Part Name BOM code Part Name BOM code 203390190029 201295300096 Electrical box ass'y Cover 19.1 201290190227 201290190232 Electronic installation board Left-side board ass'y 19.2 202300830544 201290190223 Dual Relay Rear cover 19.3 202401000410 201290100235 Compressor capacitor Front cover Low temp.
  • Page 79 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz MGCSL-D30W/RN1...
  • Page 80 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Part Name BOM code Part Name BOM code Right seal plate condenser Output pipe ass'y of A unit 201290190122 201690191407 components D double-pipe 201590190014 23.1 202301800835 A condenser components Pressure controller 201295010078 201690191414 Motor holder Input pipe ass'y II of A unit 201295300100 24.1...
  • Page 81 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Part Name BOM code Part Name BOM code 17.5 201601200004 201295300096 Pipe joint Cover 201290190056 201290190232 Base ass'y Left-side board ass'y 203390190029 201290190223 Electrical box ass'y Rear cover 19.1 201290190227 201290100235 Electronic installation board Front cover 19.2 202300830544...
  • Page 82 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 10.3 MGB-F55W/RN1 MGB-F60W/RN1 MGB-F65W/RN1...
  • Page 83 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Part Name BOM code Part Name BOM code A combination of pieces of 201290108627 21.9 Wire joint 202301450130 fixed plate condenser 201290108624 21.10 202301450044 Condenser side board Wire joint, 3p 201590100023 21.11 201290100212 Condenser ass'y A E-part box 201590100024 201119900945...
  • Page 84 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Part Name BOM code Part Name BOM code Three-phase protection 21.3 device signal output line 2024901A0004 Motor bracket ass'y 201290100005 group 21.4 202300800003 201290108625 Relay Condenser seal connector 21.5 202401000410 202301300401 Compressor capacitor Coil temp. sensor ass'y Room temp sensor ass'y 21.6 AC contactor...
  • Page 85 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz MGB-D65W/RN1...
  • Page 86 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Part Name BOM code Part Name BOM code A combination of pieces of 201290108627 Pole 201290108623 fixed plate condenser 201290108624 201290190139 Condenser side board Electronic control box door A machine back to the tube Condenser ass'y A 201590100023 201690191335...
  • Page 87 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Part Name BOM code Part Name BOM code 201590100030 28.1 202301820073 Condenser ass'y of A Pressure controller A machine back to the tube Fluted pipe ass'y A 201690101439 201690191377 ass'y condenser splitter 201690101393 29.1 Pressure controller 202301820073 assemblies A...
  • Page 88 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 10.4 MGB-F130W/RN1...
  • Page 89 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Part Name BOM code Part Name BOM code 201290100258 35.3 201601200004 The top beam Pipe joint 201290100260 201290100297 The condenser seal fittings. II Fixed plate 201290100429 201252600035 Iron nets fixed plate. II Pipe fixing clamp 201290100433 201290100431 Protect net around...
  • Page 90 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Part Name BOM code Part Name BOM code A2 machine back to the tube 201290100286 201690191373 Base weld parts components 201402300130 50.1 202301800845 Compressor Pressure controller Storage tank bottom II weld B1 machine back to the tube 201290100264 201690191375 installation...
  • Page 91 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 10.5 MGB-F185W/RN1...
  • Page 92 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Part Name BOM code Part Name BOM code Column 201290100384 41.1 201600600110 4-way valve About the protective screen 201290100347 41.2 202301800843 Pressure controller Network Rail fixed plate II 201290100349 41.3 201601200004 Pipe joint Evaporator tube assembly Vertical beam in the frame 201290100386 201690191322...
  • Page 93 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Part Name BOM code Part Name BOM code Electrical component mounting Enter the evaporator tube 19.3 201290100389 201690191314 plate II assembly 19.4 201390100009 55.1 201601300018 Main control board ass'y Electronic expansion valve 19.5 202300800003 201690101358 Relay I output tube condenser...
  • Page 94 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 10.6 MGB-F250W/RN1...
  • Page 95 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 69.5 69.9 69.8 69.4 69.1 69.1 69.14 69.15 69.7 69.1 69.10 69.6 Part Name BOM code Part Name BOM code 201290100387 201195300051 Triangular reinforcement Top cover 201290100365 201290190282 Left panel II Front panel II 201290100386 201290190281 Vertical beam in the frame...
  • Page 96 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Part Name BOM code Part Name BOM code Outlet pipe ass'y II of 201690191445 Seal plate condenser 201290100382 condenser 201290190279 Motor 202400800952 Wire casing I 201290190280 Axial flow fan 201200300013 Cover of wire casing I 201790190021 Motor bracket bonding parts 201290100375...

  • Page 97: Troubleshooting

    MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 11 Troubleshooting 11.1 Failure & Protection Codes of the Module 25/30kw module No， Code Trouble Water flow detection error (The third time) Power phase sequence error Communication error Total water outlet temperature sensor error Outlet water temperature sensor in Shell and tube exchanger error Pipe temperature sensor in condenser A error Pipe temperature sensor in condenser B error...
  • Page 98 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 New 30kw module For MGCSL-F30W/RN1 and MGCSL-D30W/RN1 only) No， Code Trouble Error of outdoor EEPROM Power phase sequence error Communication error Error of total outlet water.temp sensor(Be valid for main unit) Error of unit outlet water.temp sensor Pipe temperature sensor in condenser A error Pipe temperature sensor in condenser B error Outdoor ambient temperature sensor error...
  • Page 99 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 55/60/65kw module (Fixed speed) No， Code Trouble Water flow detection error (The third time) Power phase sequence error Communication error Total water outlet temperature sensor error Outlet water temperature sensor in Shell and tube exchanger error Pipe temperature sensor in condenser A error Pipe temperature sensor in condenser B error Outdoor ambient temperature sensor error...
  • Page 100 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 65kw digital module (Only for MGB-D65W/RN1) No， Code Trouble EEPROM error Power phase sequence error Communication error Total water outlet temperature sensor error Outlet water temperature sensor in heat exchanger error Pipe temperature sensor in condenser A error Pipe temperature sensor in condenser B error Outdoor ambient temperature sensor error or power supply protection Output error of the power protector...
  • Page 101 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 130kw module No， Code Trouble Water flow detection error (The third time) Power phase sequence error Communication error Total water outlet temperature sensor error Outlet water temperature sensor in Shell and tube exchanger error Pipe temperature sensor in condenser A error Pipe temperature sensor in condenser B error Outdoor ambient temperature sensor error...
  • Page 102 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 185kw module No， Code Trouble Water flow detection error (The third time) Power phase sequence error Communication error Total water outlet temperature sensor error Outlet water temperature sensor in Shell and tube exchanger error Pipe temperature sensor in condenser A error Pipe temperature sensor in condenser B error Outdoor ambient temperature sensor error...
  • Page 103 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 250kw module No， Code Trouble Error of outdoor EEPROM Power phase sequence error Communication error Error of total outlet water.temp sensor(Be valid for main unit) Outlet water temperature sensor in Shell and tube exchanger error Pipe temperature sensor in condenser A error Pipe temperature sensor in condenser B error Outdoor ambient temperature sensor error...
  • Page 104 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 11.2 Troubles and Solutions Troubles Possible reasons Solutions Air or other non-condensing gas still Discharge gas from refrigerant charging inlet. in the system Re-vacuum the system if necessary. Fins in the condenser are dirty or foreign Clean condenser fins substance blocking fins Over high air...
  • Page 105 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Troubles Possible reasons Solutions Confirm voltage not higher or lower than the rated Compressor stops Over high or over low voltage voltage 20V because of integrate temperature sensor Over high air expelling pressure or See “Over high air expelling pressure”...

  • Page 106: Installation

    Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 12 Installation 12.1 Unit Installation 12.1.1 Transportation The angle of inclination should not be more than 15º when carrying the unit, to avoid overturn of the unit. a. Rolling handling: several rolling rods of the same size are placed under the base of the unit, and the length of each rod must be more than the outer frame of the base and suitable for balancing of the unit.
  • Page 107 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 55/60/65kw module 130kw module...
  • Page 108 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 185kw module The position should be provided with an at least 50mm thick wood block, cloth or hard paper, to avoid damages to the unit. The position should be provided with an at least 50mm thick wood block, cloth or hard paper, to avoid damages to the unit.
  • Page 109 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 12.1.2 Installation space ● Requirements of arrangement space of the unit 1) To ensure adequate airflow entering the condenser, the influence of descending airflow caused by the high-rise buildings around upon the unit should be taken into account when installing the unit. 2) If the unit is installed where the flowing speed of air is high, such as on the exposed roof, the measures including sunk fence and Persian blinds can be taken, to prevent the turbulent flow from disturbing the air entering the unit.
  • Page 110 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 130kw module 185kw module Input of airflow Input of airflow Input of airflow Input of airflow...
  • Page 111 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 250kw module Input of airflow Input of airflow Input of airflow Input of airflow The recommend space parameter Installation space (mm) Module MGB-F(D)25W/RN1 MGB-F(D)30W/RN1 MGCSL-F30W/RN1 MGCSL-D30W/RN1 MGB-F55W/RN1 ≥1500 ≥1500 MGB-F60W/RN1 ≥2000 ≥2000 ≥8000 MGB-F65W/RN1 MGB-D65W/RN1 MGB-F130W/RN1 MGB-F185W/RN1...
  • Page 112 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 12.1.3 Installation Foundation The unit should be located on the horizontal foundation, the ground floor or the roof which can bear operating weight of the unit and the weight of maintenance personnel. Refer to the operating weight parameters in specification table.
  • Page 113 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 185kw module 250kw module 1551 1551 Drainage channel Concrete Cement mortar Drainage channel Hole for anchor bolt Schematic diagram of installation dimension of the unit 12.4 Installation of damping devices ※ Damping devices must be provided between the unit and its foundation. By means of the Φ15mm diameter installation holes on the steel frame of the unit base, the unit can be fastened on the foundation through the spring damper.
  • Page 114 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 The lock bolts can be tightened after the correct operational height is reached. 12.2 Water System Installation Notice: ● After the unit is in place, chilled water pipes can be laid. ● The relevant installation regulations should be abided with when conducting connection of water pipes. ●...
  • Page 115 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz l. All possible water pipes in the system to be chilled should be under heat preservation, including inlet pipes and flanges of the heat exchanger. m. The outdoor chilled water pipelines should be wrapped with an auxiliary heating belt for heat preservation, and the material of the auxiliary heat belt should be PE, EDPM, etc., with thickness of 20mm, to prevent the pipelines from freezing and thus cracking under low temperature.
  • Page 116 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 d. Special grounding screws should be used for earth connection. Bolts should not be installed or removed at will; otherwise flow switches may suffer deformation and failure. e. Flow switches have been set at minimal flow value before leaving the factory. They should not be adjusted below the setting value at the factory, or they may suffer failure.
  • Page 117 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Installation of multi-module water system pipeline 1) Installation mode I (recommended installation mode) n :the module quantity, max 16 2) Installation mode II n :the module quantity, max 16 12.2.5 Installation of water system pipeline for 55/60/65KW module Installation of single-module water system pipeline Installation of multi-module water system pipeline 1) Installation mode I (recommended installation mode)
  • Page 118 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 less than 6 modules 2) Installation mode II n : the module quantity, max 6 less than 6 modules 3) Installation mode III (recommended installation mode) n : the module quantity, max 16 Installation mode A: less than 16 modules Installation mode B: less than 16 modules...
  • Page 119 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 4) Installation mode IV n : the module quantity, max16 No.n module No.(n-1) module No.1 module No.(n-1) address No.(n-2) address No.0 address Drill dead hole at the position, and move the total effluent temperature sensor at No.0 address to the position Water flow switch...
  • Page 120 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Installation mode A: less than 16 modules n : the module quantity, max6 m : the module quantity, max6 Installation mode B: less than 12 modules...
  • Page 121 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 12.2.6 Installation of water system pipeline for 130KW module Installation of single-module water system pipeline Electric control box Total water outlet temp sensor Water intlet Water outlet Installation of multi-module water system pipeline 1) Installation mode I (recommended installation mode) n : the module quantity, max8 No.1 unit No.(n-1) unit...
  • Page 122 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 12.2.7 Installation of water system pipeline for 185KW module Multi-module combination installation involves special design of the unit, so relevant explanation is given as follows.Installation mode of multi-module combination water system pipeline n : the module quantity, max5 a.
  • Page 123 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz No.1 unit No.2 unit No.n unit (n≤8) No.0 address(main unit) No.2 address No.(2n-2) address No.1 address No.3 address No.(2n-1) address Water flow switch Pump Drill dead hole at the position, and move the total effluent temperature sensor at (less than 8 modules) No.0 address to the position Notice:...
  • Page 124 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 65×7 65×15 55×8 55×16 60×8 DN125 60×16 65×8 65×16 Table of diameter parameters of main inlet and outlet pipes for 130KW module Total inlet and outlet water Total inlet and outlet water Unit model x quantity Unit model x quantity pipe diameter pipe diameter...
  • Page 125 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Item Water flow rate(m3/h) Model Minimum Maximum MGB-D25W/RN1 3.96 4.84 MGB-F25W/RN1 MGB-D30W/RN1 4.68 5.72 MGB-F30W/RN1 MGCSL-F30W/RN1 4.68 5.72 MGCSL-D30W/RN1 4.68 5.72 MGB-F55W/RN1 8.46 10.4 MGB-F60W/RN1 9.28 11.35 MGB-F65W/RN1 10.08 12.32 MGB-D65W/RN1 10.08 12.32 MGB-F120W/RN1 18.54 22.66 MGB-F185W/RN1...
  • Page 126 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 =higher temperature, F (℃) =volume of water in system, gal(m =absolute pressure at lower temperature,psia(kPa abs.) =absolute pressure at higher temperature,paia(kPa abs.) =specific volume of water at lower and higher temperature, respectively, ft /lb(m /kg) α=linear coefficient of thermal expansion;...
  • Page 127 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 7. Please carefully read the labels on the electric cabinet. 8. The user’s attempt to repair the controller is prohibited, since improper repair may cause electric shock, damages to the controller, and so on. If the user has any requirement of repair, please contact the maintenance center.
  • Page 128 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 ● All inductive components provided by the user (such as coils of contactor, relay, and so on) must be suppressed with standard resistance-capacitance suppressors, to avoid electromagnetic interference, thus leading to failure of the unit and its controller and even damages to them. ●...
  • Page 129 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 12.3.4 Wiring steps Step Content Check the unit and ensure that it is connected with grounding wires correctly, to avoid leakage, and the grounding devices should be mounted in strict accordance with the requirements of electrical engineering rules. The grounding wires can prevent electric shock.
  • Page 130 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Fielding wiring Water pump wiring diagram reference, the control circuit of water pump AC contactor must be passed P1 and P2 contacts of master unit. One water pump 380V 3P 50HZ 380V 3P 50HZ A B C N P1 P2 Creepage...
  • Page 131 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Note: For MGCSL-F(D)30W/RN1,MGB-D65WR/N1, MGBT-F250W/RN1 ○ 1 .Wiring of “ON/OFF” weak electric port Corresponding parallel connect the “ON/OFF” port of the main unit’s electric control box, then, connect the “ON/OFF” signal (provide by user) to the “ON/OFF” port of main unit as follows. 0# electric control box “ON/OFF”...

  • Page 132: Commissioning

    Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 13 Commissioning 1. Preparation ● After the water system pipeline is flushed several times, please make sure that the purity of water meets the requirements; the system is re-filled with water and drained, and the pump is started up, then make sure that water flow and the pressure at the outlet meet the requirements.

  • Page 133: Maintenance

    MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 14 Maintenance Maintenance for main components： ● Close attention should be paid to the discharge and suction pressure during the running process. Find out reasons and eliminate the failure if abnormality is found. ● Control and protect the equipment. See to it that no random adjustment be made on the set points on site. ●...
  • Page 134 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 system is discharged. Before injecting refrigerant, the whole refrigeration system must be completely dry and of vacuum pumping. ● Connect vacuum pumping pipe at the fluoride nozzle at low-pressure side. ● Remove air from the system pipe with vacuum pump. The vacuum pumping lasts for above 3 hours. Confirm that the indication pressure in dial gauge is within the specified scope.

  • Page 135: Control System

    MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 15 Control System 15.1 PCB Outline and Description 15.1.1 25/30kw module PCB, outlook view 15.1.2 25/30kw module components description Detail information Detection of current of the compressor B (protection code P5) Detection of current of the compressor A (protection code P4) Current is not detected within the initial 5 seconds after the compressor is started up.
  • Page 136 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 T4: outdoor ambient temperature sensor (fault code E7) T3B: pipe temperature sensor of the condenser B (fault code E6 and protection code P7) T3A: pipe temperature sensor of the condenser A (fault code E5 and protection code P6) 1) T4: if there is one system that requires starting outdoor fans, the fans are started through electric control of the unit.
  • Page 137 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Each modular part of modular unit has the same electric control function, and the main unit and slave units can be set through address code on the electric control board. The address code 0 # is provided as the main unit. The priority of being the main unit is given to the unit with digital compressor, and other addresses are slave units.
  • Page 138 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Electronic expansion valve of the system B Electronic expansion valve of the system A Electronic expansion valve is used to control refrigerant flow under different operating modes and different loads. Auxiliary electric heater Attention: the control port value of auxiliary electric heater actually detected is ON/OFF but not 220V control power supply, so special attention should be paid when installing the auxiliary electric heater.
  • Page 139 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 15.1.3 New 30kw module PCB, outlook view (Only for MGCSL-F30W/RN1 and MGCSL-D30W/RN1) 10 9 8 7 6 5 24 25 26 15.1.4 New30kw module components description (Only for MGCSL-F30W/RN1 and MGCSL-D30W/RN1) Detail information Detection of current of the compressor A1 (protection code P4) Detection of current of the compressor B1 (protection code P5) Current is not detected within the initial 5 seconds after the compressor is started up.
  • Page 140 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 3) T4, T3B and T3A: when the temperature sensor is detected to suffer open circuit or short circuit, fault alarm will occur. ● When the main unit suffer fault of temperature sensor: the main unit and subordinate units will be shut down. ●...
  • Page 141 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 2) Subordinate unit: (water flow detection will not be done). COM (I) 485 communication port (fault code E2) COM (O) is interconnected with P, Q and E of COM (I), used for RS-485 communication. 1) If faults occur between the wired controller and the main unit module, all modules will be shut down.
  • Page 142 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12   Each modular part of modular unit has the same electric control function, and the main unit and subordinate units can be set through address code on the electric control board. The address code 0 # is provided as the main unit. The priority of being the main unit is given to the unit with digital compressor, and other addresses are subordinate units.
  • Page 143 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 15.1.5 55/60/65kw module PCB(Fixed speed), outlook view...
  • Page 144 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 15.1.6 55/60/65kw module components description Detail information Detection of current of the compressor B (protection code P5) Detection of current of the compressor A (protection code P4) Current is not detected within the initial 5 seconds after the compressor is started up. When the current of the compressor is detected to exceed protective value set (33A for constant speed compressor), it will be shut down and re-started after 3 min.
  • Page 145 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Each modular part of modular unit has the same electric control function, and the main unit and slave units can be set through address code on the electric control board. The address code 0 # is provided as the main unit. The priority of being the main unit is given to the unit with digital compressor, and other addresses are slave units.
  • Page 146 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 PUMP Attention: the control port value of the pump actually detected is ON/OFF but not 220V control power supply, so special attention should be paid when installing the pump. 1) After receiving start-up instruction, the pump will be started up instantly, and will maintain start-up state always in the process of operation.
  • Page 147 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 65kw digital module (Only for MGB-D65W/RN1) Detail information Detection of current of the compressor A1 (protection code P4) Detection of current of the compressor B1 (protection code P5) Current is not detected within the initial 5 seconds after the compressor is started up. When the current of the compressor is detected to exceed protective value set (33A for constant speed compressor), it will be shut down and re-started after 3 min.
  • Page 148 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Adjustment range of constant speed capability: ON and OFF. Adjustment range of constant speed capability: ON and OFF. Total outlet water temperature sensor (fault code E3) Only the main unit is valid, and the subordinate units are invalid. Under refrigerating mode and heating mode, conduct adjustment according to the magnitude of total outlet watertemperature.
  • Page 149 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz high-pressure protection of the system B and discharge temperature switch protection (protection code P2); low-pressure protection of the system A (protection code P1); low-pressure protection of the system B (protection code P3); Constant speed compressor: connection of discharge temperature switch and high-pressure switch of the system in series. Inlet water temperature sensor (fault code EF) Shell and tube low-temperature ant-freeze sensor (fault code Eb) Water flow detection (fault code of the main unit E0) is only valid for the main unit but invalid for subordinate units.
  • Page 150 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 When the power supply returns to normal condition, fault is removed. Attention: phase lace and phase dislocation of power supply are detected only in the early period after the power supply is connected, and they are not detected while the unit is in operation.
  • Page 151 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 15.1.7 130kw module PCB, outlook view 15.1.8 130kw module components description Detail information EEV B of No.1 unit EEV A of No.1 unit high-pressure protection and discharge temperature switch protection of the system A of No.1 unit (protection code P0); high-pressure protection and discharge temperature switch protection of the system B of No.1 unit (protection code P2);...
  • Page 152 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 No.1 unit T41 :outdoor ambient temperature sensor(malfunction code E7) As long as one system has requirement to run outdoor fan,the unit controller sent the signal to restart outdoor fan.whether the system runs one fan or two fans is controlled by T41 No.1 unit T3-1B :pipe temperature sensor of condenser B (malfunction code E6,protection code P7) ●...
  • Page 153 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz No.2 unit low-temperature ant-freeze sensor TBH2-A No.2 unit Inlet water temperature sensor TBH2-B No.2 unit outlet water temperature sensor (fault code E4) Under cooling mode and heating mode, conduct adjustment according to the magnitude of unit outlet water temperature. Adjustment range of constant speed capability: ON and OFF.
  • Page 154 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 2)Under heating mode, when the main unit board detects total water outlet temperature to be lower than 45 C, the switch will be closed, and the auxiliary electric heater will begin to work; when the total water outlet temperature is higher than 50 C, the switch will be opened, and the auxiliary electric heater will stop working.
  • Page 155 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Four-way valve of the system B of No.1 unit; Neutral line No.1 unit outdoor fan B, controlled by T41 Compressor of the system A of No.1 unit; Neutral line Four-way valve of the system A of No.1 unit; Neutral line No.1 unit outdoor fan A, controlled by T41 1) No.1 unit auxiliary electric heater(only the main unit is valid)
  • Page 156 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 15.1.9 185kw Module PCB, outlook view 15.1.10 185kw module components description Detail information Detection of current of the compressor B (protection code P5) Detection of current of the compressor A (protection code P4) Current is not detected within the initial 5 seconds after the compressor is started up. When the current of the compressor is detected to exceed protective value set (33A for constant speed compressor), it will be shut down and re-started after 3 min.
  • Page 157 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Total outlet water temperature sensor (fault code E3) Only the main unit is valid, and the subordinate units are invalid. Under refrigerating mode and heating mode, conduct adjustment according to the magnitude of total outlet water temperature.
  • Page 158 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Control port (reserved) Electronic expansion valve of the system B Electronic expansion valve of the system A Electronic expansion valve is used to control refrigerant flow under different operating modes and different loads. Auxiliary electric heater Attention: the control port value of auxiliary electric heater actually detected is ON/OFF but not 220-230V control power supply, so special attention should be paid when installing the auxiliary electric heater.
  • Page 159 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 15.1.11 250kw Module PCB, outlook view 10 9 7 6 13 5 14 1 2 4 15.1.12 250kw module components description Detail information Detection of current of the compressor A1 (protection code P4) Detection of current of the compressor A (protection code P4) Current is not detected within the initial 5 seconds after the compressor is started up.
  • Page 160 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 Spot check. The operating status of outdoor system can be observed through spot check, and specific display contents are as shown in the following figure: ● Display contents of “operating mode”: 1. cooling; 2. heating; 4. pump; 8. Stand-by ●...
  • Page 161 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Attention! Under heating mode, when the main unit board detects total water outlet temperature to be lower than 45℃, the switch will be closed, and the auxiliary electric heater will begin to work; when the total water outlet temperature is higher than 50℃, the switch will be opened, and the auxiliary electric heater will stop working.
  • Page 162 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 15.2 Wired controller KJR-08B/BE: Name of keys on the wired controller and the keypad operation description: 1. ON/OFF button: In the power off status, press this key and the startup indicator comes on, and the wire controller enters the startup status and keeps the current set information such as temperature value, timing.
  • Page 163 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz Every time when you press [TIME ON] button, the HOUR and MINUTE of timing startup blink at a frequency of 2Hz. They stop blinking when you adjust the hour and minute; and continue blinking 2 seconds after you stop adjustment.
  • Page 164 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 2. Installation procedure: The wiring procedure and principles are shown in the figure: Note: Please connect the attached shorted wires to the corresponding communication port COM(I) or COM(O) in the main control board of the last parallel unit (dial code ). Directly connect to the last parallel unit if only one unit is connected.
  • Page 165 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz The tables as below contain the operation procedure of wired controller. Operation procedure of wired controller: Step Content Press AUTO/MANUAL mode at shutdown status, you could select MANUAL or AUTO turn-on mode as you want. The function is invalid at startup status. In Manual mode, press [PAGEUP/TEMP+] or [PAGEDOWN/TEMP-] button for select your require online unit quantity.
  • Page 166 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 3．ON/OFF operating flow chart. Turn on the unit Power up to module unit and initially deliver power to wire control. Press the key again until all Press “mode settings” key to set the modes are showed (i.e. Cooling, intended mode.
  • Page 167 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz KJR-120A/MBE (Only for MGB-D65WN1-R, MGCSL-F(D)30W/RN1 and MGBT-F250W/RN1 ) ON/OFF TIME ON TEMP. SET TIME OFF PAGEUP/TEMP+ MODE ALARM CLEAR PAGEDOWN/TEMP - QUERY ADDRESS - CLOCK LOC K HYSTERESIS ADDRES S SE T ADDRESS+ LOCK ADDRESS SET HYSTERESIS 1.
  • Page 168 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 minute can be adjusted by “ADDRESS/+” and “ADDRESS/-”, after the adjustment then press the OK button for the setting confirmation. ⑥⑦ TIME ON/TIME OFF button Press the “TIME ON” button once 【Press for the first time】, and enter to the hour adjustment of timing on, and press again 【Press for the second time】, and enter to the minute adjustment of timing on.
  • Page 169 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz LCD Diagram of Wired Controller Display operation mode Display operation status Display time-on/off Display Query data 2. OPERATION PROCEDURE OF WIRE CONTROLLER ● Operation procedure of mode setting 1). Press MODE at shutdown status, you could select appropriate mode as you want. The function is invalid at startup status.
  • Page 170 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 ● Operation procedure of HYSTERESIS TEMP.SET(δ ) 1).Through the hysteresis setting, the system can adjust the load effectively. 2). The adjusting logic of cooling mode : (the parameter of δ1,δ2,Tj1 and Tj2 are decided by the outdoor unit) 3).
  • Page 171 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 3. INSTALLATION PROCEDURE Installation procedure: Outdoor unit Outdoor unit Outdoor unit Outdoor unit Wire Controller Wire Controller Wire Controller Wire Controller Use PQE connect with each other when several wire-controllers are parallel. NOTE Please connect the attached shorted-wires to the corresponding communication port COM(I) or COM(O) in the main control board of the last parallel unit (dial code ).

  • Page 172: Appendix

    Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 OUTLINE OF FUNCTIONS This wired controller provides the following functions: 1). Connect with the outdoor unit through the terminals P, Q and E. Connect with the upper unit through the terminals X, Y and E(reserved).Connect with other wired controllers through the terminals P, Q and E. 2).
  • Page 173 MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz 2.Temperature-Resistance characteristic sheet for pipe temperature sensor，ambient temperature sensor，inlet water temperature sensor and outlet water temperature sensor. Sensor characteristic sheet Unit：Temp:℃--K, Ratio:KΩ Temp. Ratio Temp. Ratio Temp. Ratio Temp. Ratio 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249...
  • Page 174 Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12 3.Temperature-Resistance characteristic sheet for discharge temperature sensor of digital compressor. ：temp:℃--K, Ratio:KΩ Sensor characteristic sheet Unit Temp Ratio Temp Ratio Temp Ratio Temp. Ratio Temp. Ratio 2889.60000 148.39300 17.29460 3.45032 0.97524 2704.61400 141.59040 16.70980 3.35400 0.95632 2532.87200...

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