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Midea MGA-D30W/SN1, Manual

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Midea MGA-D30W/SN1 Manual Download Page 36

MCAC-2008-11                                                                                                                                                    Air-cooled Modular Chiller 

36 

 

12.1.4 Operation Limits 

a. The range of voltage: 

Power supply: 380V 3ph 50Hz, the permitted max. Voltage: 418V, the permitted min. voltage: 342V. 

b. Temperature range for unit operation: 

Cooling mode 

Heating mode 

Item 

 

Model

 

Ambient temperature  Chilled water outlet

Ambient temperature

Heating water outlet 

Heat pump 

17 ~4

℃

8

℃

  5 ~1

℃

7

℃

 -10 ~

℃

21

℃

 45 ~5

℃

0

℃

 

Summary of Contents for MGA-D30W/SN1

Page 1: ...Diagrams Pipe Connection Drawing 7 Wiring Diagrams 8 Electric Characteristics 9 Capacity Tables 10 Exploded View 11 Troubleshooting 12 Installation 13 Debugging 14 Maintenance 15 Control Manufacture...

Page 2: ...erant N1 R410A R22 Power Supply S 380V 50Hz 3Ph Outdoor Unit Cooling Capacity kW Compressor Type D Digital Scroll Compressor F Fixed speed Scroll Compressor Modular Air Cooled Chiller System A Time A...

Page 3: ...t L W H unit mm kg Power supply 1 MGA F30W SN1 R410A 1514 850 1820 440 380 415V 3ph 50Hz 2 MGA F65W SN1 R410A 2492 850 1820 700 380 415V 3ph 50Hz 3 MGA D30W SN1 R410A 1514 850 1820 440 380 415V 3ph 50...

Page 4: ...an be realized stepless adjustment Chilled water outlet temperature adjustable Chilled water outlet temperature can be adjusted by wire controller according to customer s demand In cooling mode the ad...

Page 5: ...ting its address No 0 the other as slave units Strong micro computer intelligent control and monitor function Stepless capacity modulation more efficiency Operation mode control Automatic and uniform...

Page 6: ...8 18 Water inlet outlet pipeline diameter mm 133 133 133 133 133 133 133 133 Water flow volume m3 h 5 2 10 3 15 5 20 6 25 8 30 9 36 41 2 Max Pressure MPa 1 1 1 1 1 1 1 1 Evaporator Water side Water pi...

Page 7: ...18 18 18 18 18 18 18 Water inlet outlet pipeline diameter mm 133 133 133 133 133 133 133 133 Water flow volume m3 h 46 4 51 5 56 7 61 8 67 72 1 77 3 82 4 Max Pressure MPa 1 1 1 1 1 1 1 1 Evaporator Wa...

Page 8: ...ss kPa 29 4 29 4 29 4 29 4 29 4 29 4 29 4 29 4 Water inlet outlet pipeline diameter mm 133 133 133 133 133 133 133 133 Water flow volume m3 h 11 2 22 4 33 6 44 8 56 67 2 78 4 89 6 Max Pressure MPa 1 1...

Page 9: ...oss kPa 18 18 18 18 18 18 18 18 Water inlet outlet pipeline diameter mm 133 133 133 133 133 133 133 133 Water flow volume m3 h 5 2 10 3 15 5 20 6 25 8 30 9 36 41 2 Max Pressure MPa 1 1 1 1 1 1 1 1 Eva...

Page 10: ...e type Water resistance loss kPa 18 18 18 18 18 18 18 18 Water inlet outlet pipeline diameter mm 133 133 133 133 133 133 133 133 Water flow volume m3 h 46 4 51 5 56 7 61 8 67 72 1 77 3 82 4 Max Pressu...

Page 11: ...r resistance loss kPa 29 4 29 4 29 4 29 4 29 4 29 4 29 4 29 4 Water inlet outlet pipeline diameter mm 133 133 133 133 133 133 133 133 Water flow volume m3 h 11 2 22 4 33 6 44 8 56 67 2 78 4 89 6 Max P...

Page 12: ...MCAC 2008 11 Air cooled Modular Chiller 12 5 Dimension 5 1 30kW modular outline 5 2 65kW modular outline...

Page 13: ...exchanger Condenser Throttle Plate of exchanger Water inlet Water outlet Filter Filter Comp 2 Gas liquid separator Comp 1 High pressure switch Low pressure switch Four way valve 6 2 Refrigeration syst...

Page 14: ...t can be combined by single unit double units or both By connecting each own inlet outlet pipeline in series 1 8 modules 2 16 units can be combined and the max cooling capacity is 520kW unit system of...

Page 15: ...ric heater installation A Water heater chiller unit I Gate valve 2 B Back flush valve J Gate valve 3 C Temperature testing tube K Filter D Pressure gauge L Flow switch E Drain valve M Exhaust valve F...

Page 16: ...MCAC 2008 11 Air cooled Modular Chiller 16 7 Wiring Diagrams 7 1 Outdoor wiring diagram MGA F D 30W SN1 MGA F D 65W SN1 module for main unit...

Page 17: ...MCAC 2008 11 Air cooled Modular Chiller 17 7 2 Outdoor wiring diagram MGA F D 30W SN1 MGA F D 65W SN1 module for auxiliary unit...

Page 18: ...8 2 0 67 3 1 MGA F65W SN1 50 380 342 418 42 9 49 80 74 4 11 8 4 0 67 2 3 1 2 MGA D30W SN1 50 380 342 418 19 9 24 40 74 82 4 11 8 12 7 0 67 3 1 MGA D65W SN1 50 380 342 418 42 9 49 80 74 82 4 2 11 812...

Page 19: ...7 8 8 34 4 5 9 9 0 35 5 6 1 9 3 3 8 9 9 3 9 7 10 1 4 6 6 7 0 7 3 7 5 28 5 30 9 5 3 8 8 32 4 5 6 8 9 33 9 5 8 9 1 35 1 6 0 9 4 3 8 6 9 0 9 5 9 9 4 6 4 6 8 7 1 7 4 30 5 29 9 5 1 9 2 31 5 5 4 9 3 33 0 5...

Page 20: ...21 8 4 14 4 15 1 15 8 16 3 28 5 67 0 11 5 19 1 70 2 12 1 19 3 73 5 12 6 19 7 76 1 13 1 20 4 3 18 5 19 6 20 5 21 5 4 13 9 14 7 15 4 16 1 30 5 64 7 11 1 19 9 68 3 11 7 20 0 71 5 12 3 20 5 75 1 12 9 21...

Page 21: ...0 5 10 4 10 2 9 9 9 6 4 7 9 7 8 7 6 7 4 7 2 10 5 36 8 6 3 9 2 36 2 6 2 9 6 35 5 6 1 10 0 34 5 5 9 10 4 33 6 5 8 10 8 3 9 7 9 5 9 2 9 0 8 7 4 7 3 7 1 6 9 6 7 6 5 7 5 33 9 5 8 9 0 33 0 5 7 9 4 32 0 5 5...

Page 22: ...6 1 15 6 10 5 79 7 13 7 19 8 78 3 13 5 20 7 76 9 13 2 21 6 74 8 12 9 22 5 72 8 12 5 23 4 3 21 1 20 5 19 9 19 5 18 9 4 15 8 15 4 14 9 14 6 14 2 7 5 73 5 12 6 19 4 71 5 12 3 20 3 69 0 11 9 21 0 67 9 11...

Page 23: ...MCAC 2008 11 Air cooled Modular Chiller 23 10 Exploded View 10 1 MGA F30W SN1...

Page 24: ...y 1 19 Holder ring 2 40 4 Relay 2 20 Support board 2 40 5 Contactor 2 21 Cover 1 40 6 Compressor capacitor 1 22 4 way valve ass y 1 40 7 Wire joint 1 22 1 Muffler 1 40 8 Wire joint 4 22 2 4 way valve...

Page 25: ...MCAC 2008 11 Air cooled Modular Chiller 25 10 2 MGA F65W SN1...

Page 26: ...ss y 2 8 5 Pressure controller 1 36 Drainage pan holder 4 8 6 EEV solenoid 1 37 Connecting pipe ass y 1 8 7 Discharge temp sensor 1 38 Connecting pipe 1 9 4 way valve ass y 1 39 4 way valve connection...

Page 27: ...MCAC 2008 11 Air cooled Modular Chiller 27 10 3 MGA D30W SN1...

Page 28: ...1 20 Support board 2 40 7 Wire joint 1 21 Cover 1 40 8 Wire joint 4 22 4 way valve ass y 1 40 9 Wire joint 1 22 1 Muffler 1 40 10 Wire joint 3p 1 22 2 4 way valve 1 40 11 Wire joint 4p 1 22 3 Pipe joi...

Page 29: ...Heat exchanger 2 5 1 Pressure controller 1 36 E part box ass y 2 6 Suction pipe ass y A 2 36 1 Compressor capacitor 2 6 1 Pressure controller 1 36 2 Contactor 4 7 4 way valve ass y 2 36 3 E part box 2...

Page 30: ...d 1 49 Holder ring 4 10 8 Discharge temp sensor 1 50 Side sealed board 4 11 Clapboard supporting board 6 51 Cover 2 12 Motor bracket 4 52 Front cover 1 13 Drainage pan 2 53 Top cover 1 14 Cover board...

Page 31: ...only for wire controller EE Communication between wire controller and computer failure only for wire controller EF Prevent frostbite Temp sensor of plate heat exchanger B trouble P0 System A high pres...

Page 32: ...ditional Refrigerant insufficient Recharging Air flow insufficient Check the running direction of the fan Short cycle of air flow Find the reason which causes short cycle then eliminate it Low suction...

Page 33: ...parts above about the failures caused by suction and discharge pressure Contactor wire burn out Replace the invalid components Contactor wire burn out Exchange any two of three phases with each other...

Page 34: ...ded to use 6 bars under the module 4 bars with 30kW module each one should be a bit longer than the width of basement to keep the module s in balance 30kW module 65kW module Sling the module with stee...

Page 35: ...les for maintenance 12 1 3 Installation Foundation Before installation structure and prefabrication of the basement should be seriously paid attention to when installing on the top floor or middle the...

Page 36: ...age Power supply 380V 3ph 50Hz the permitted max Voltage 418V the permitted min voltage 342V b Temperature range for unit operation Cooling mode Heating mode Item Model Ambient temperature Chilled wat...

Page 37: ...illed water pipeline should be covered with adequate heat insulated material to keep the Temp of the water and prevent dewing In winter if the unit is shut down the water in the plate heat exchanger a...

Page 38: ...MCAC 2008 11 Air cooled Modular Chiller 38 Reference figure of water system installation...

Page 39: ...system is less than the required minimum volume the additional water tank is necessary in order to avoid the compressor On and Off frequently The minimum size of the water tank is calculated as Size...

Page 40: ...f water quality furring and causticity Water quality Furring Causticity Remark 1 PH 6 acidic water Hard Big Hard CaSO4 will be built easily 2 PH 8 acidic water Soft Soft deposit with Fe3 Cl will be ma...

Page 41: ...t e r p i p e d i a m e t e r 3 Wire sketch drawing of Water flow switch W a t e r f l o w d e c r e a s e A d j u s t a b l e k n o b C l o s e d t e r m i n a l O F F O p e n d t e r m i n a l O N...

Page 42: ...MCAC 2008 11 Air cooled Modular Chiller 42 Reference figure of multi modules connection A type B type...

Page 43: ...n which is decided by the actual load and cooling water temp so it is recommended to select power source transformer fuse switch and the size of the wire in the consideration of the worst condition 9...

Page 44: ...on area of exposed grounding wiring is 4mm2 3 Maximum section area of grounding wiring is 50mm2 4 Commonly section area is as follow list Phase section area of power supply wiring S Grounding and prot...

Page 45: ...receding list is only for reference 3 The color requirement of wirings Single phased power wiring adopts the red wiring commonly but the green blue and yellow one also can be used Three phase wirings...

Page 46: ...nstall the fast closed valve at lower reaches of it If cannot avoid such thing should use the throttle to protecting it 6 Auxiliary electric heater control wire connection outfitting by users The cont...

Page 47: ...MCAC 2008 11 Air cooled Modular Chiller 47 9 The module wiring and the installation wiring refer to the following...

Page 48: ...MCAC 2008 11 Air cooled Modular Chiller 48 Unit electric control communication figure for 30kW module...

Page 49: ...MCAC 2008 11 Air cooled Modular Chiller 49 Unit electric control communication figure for 65kW module...

Page 50: ...or electrify by temporarily wiring thus to make the water pump running Warning it is absolutely forbidden to start the pump by the control of main unit before the water system has been adjusted well 1...

Page 51: ...0 minutes when the temp of water is stable adjust the water flow volume to nominal value to ensure the unit running normally 3 When the unit is working check the Running Current Running Pressure Water...

Page 52: ...trolled by micro controller one every cycle 3 Notices 1 Because the water pump is under the control of main unit it is forbidden to start the pump by the main unit when cleaning water system pipeline...

Page 53: ...sfer efficiency cause more power consumption and higher discharge pressure or lower suction pressure These materials can be cleaned by formyl citric acid vinegar acid etc but any liquid which contains...

Page 54: ...em for leak hunting or leakage test just nitrogen or refrigerant is allowed Remove compressor If it is necessary to remove the compressor please operate with the sequence below 1 Switch off the power...

Page 55: ...stops while the others keep running When auxiliary unit s protection acts this unit stops while the others keep running 15 1 2 Components description of 30kW 65kW module 1 Compressor B current detecti...

Page 56: ...ode P8 is only available for main unit 5 Outlet water Temperature sensor of plate heat exchanger failure code E4 Capacity output will adjust according to the outlet water Temperature of the plate heat...

Page 57: ...it and auxiliary unit the auxiliary unit with communication failure will stop and then the number of units online detected by the wire controller will decrease EA will be displayed and the indicator l...

Page 58: ...stops working 18 WATER PUMP Notice the actual figure of controller of the pump is not 220V power supply but ON OFF switch z Water pump will start at once after receiving the opening order and keep run...

Page 59: ...A The number of auxiliary unit checked by main unit decrease only for wire controller EB Prevent frostbite Temp sensor of plate heat exchanger A trouble EC Wire controller can not search the modules o...

Page 60: ...er entering the query status use ADDRESS and ADDRESS keys to query information of the previous or next outdoor unit After selecting to query a specific outdoor unit use the PAGEDOWN TEMP and PAGEDOWN...

Page 61: ...us modular the operation status of the previous modular will display if the current modular is 0 and the previous one is 15 Press this button for minus address at wire address setting mode If the wire...

Page 62: ...d function description of LCD screen of wired controller Installation procedure 1 The wiring procedure and principles are shown in the figure Note Use PQE position connects with each other when severa...

Page 63: ...ooling range 5 17 Heating range 45 50 3 Press ON OFF button running indicator of wire controller is light unit is start to run and display running status at wire controller Press this button once agai...

Page 64: ...N TEMP button in the main page system information could be queried Operation procedure of water temperature setting 1 Press TEMP SET button of wire controller when background light is on 2 Press PAGEU...

Page 65: ...r the front board of console firstly and then the thickness of the front not exceeds than 6mm thirdly LCD touch screen cannot be drilled See following figure for outline dimension of the screen and si...

Page 66: ...trictly differentiating these two poles Three sets of DB9 pin serial ports which are COM0 COM1 and COM2 COM0 the communication port of RS232 which is the special serial port for uploading or downloadi...

Page 67: ...t most 16 outdoor units could be connected Configuration figure as follows This LCD centralized control the Air Cooled Heat Pump Modular Chiller delivers various control orders or setting functions to...

Page 68: ...ber shows in gray Page 1 of Query Window Press a certain on line units number the following window shows and relevant parameters of the units system could be queried Page 2 of Query Window Press Next...

Page 69: ...alfunction occurring time and detail contents could be queried in this page Click the malfunction in the form and then click Help button simple troubleshoot methods will be showed for user reference E...

Page 70: ...or decrease the units number s value could skips among the different units whose malfunctions could be showed Selected a malfunction and click Help system will enter into troubleshoot window providing...

Page 71: ...run according to last mode Includes operation mode and manual auto control mode till to the next start up but the start up mode or control mode have been reset Run Stop button are available in anytime...

Page 72: ...ir address code value from large to small Unit will return to work in normal when restarted by main modular unit or LCD until malfunction has been settled out Power failure memory You could select thi...

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