McQuay MAC 080 C Manual
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McQuay MAC 080 C Manual

Air-cooled mini chiller
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See also: Installation and Maintenance Manual
Air-Cooled Mini Chiller
Models: MAC 080 C/CR
MAC 100 C/CR
MAC 120 C/CR
MAC 150 C/CR
M4AC 080 C/CR
M4AC 100 C/CR
M4AC 120 C/CR
M4AC 150 C/CR
MAC - C - 2004

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Summary of Contents for McQuay MAC 080 C

  • Page 1 MAC - C - 2004 Air-Cooled Mini Chiller Models: MAC 080 C/CR M4AC 080 C/CR MAC 100 C/CR M4AC 100 C/CR MAC 120 C/CR M4AC 120 C/CR MAC 150 C/CR M4AC 150 C/CR...

  • Page 2: Table Of Contents

    "McQuay" is a registered trademark of McQuay International. All rights reserved throughout the world. 2003 McQuay International "Bulletin illustrations cover the general appearance of McQuay International products at the time of publication and we reserve the right to make changes in design and construction at any time without notice."...

  • Page 3: Nomenclature

    Nomenclature Brand Name _ R22 Equipment Air Cooled Norminal Generation (McQuay) 4 R407C Equipment Chiller Cooling _ Cooling Capacity R Heating General Features and Specifications Refrigerant circuit The unit has been designed with two separate refrigerant circuits, i.e. it has two compressors. By doing so, the unit has part loading capabilities, i.e.
  • Page 4 Water buffer tank & pipe connection The unit does not come with a water buffer tank. However, the unit does come with an 8 liters expansion tank. (A 135L water tank is available as optional item) The external water piping connection can be made either from the left or right side of the unit. Connection is done with 1-1/4”...

  • Page 5: Chiller Panel Controller

    Chiller Panel Controller 1. SAFETY CONSIDERATION Only specially trained and qualified technicians and installers are authorized to install and service this equipment. 1.1 General Installation Recommendations Only supply DC voltage (9-17V, typically 12V, maximum current 200mA) as a power source to the device. Input contact voltage supply should limit to 12VDC or 24VAC.
  • Page 6 3. HARDWARE DESCRIPTION Legend 1 & 2 Navigation key Execute instruction key Cancel instruction key Switching to Heat mode shortcut key Switching to Cool mode shortcut key Toggle ON/OFF shortcut key Show alarm key Graphical LCD display ON/OFF indicator Front View Legend 1 &...
  • Page 7 4. INSTALLATION 4.1 Chiller Bus Supported up to 50 units of Chiller Chiller 0 Chiller 1 Chiller 2 5 way wire (CN8) Chiller Communication bus Chiller Panel 0 Chiller Panel 1 (Master) (Slave) CHILLER NETWORK Chiller panel needs to be energized with +12Vdc. The 5 way wires that provided is once on the easiest solution to establish a communication between the panel and chiller main board (CN8-CN8).

  • Page 8: Chiller Panel Controller

    4.2 Others Configuration JH2 in Chiller panel should let it open (put the jumper header on one pin only) all the time unless user need to do CMOS reset to that particular panel. JH3 should let it open (put the jumper header on one pin only) all the time as well. Remember to put in the coin cell battery on the panel.
  • Page 9 5. SOFTWARE DESCRIPTION 5.1 Introduction The Chiller Panel Controller can be used to control/display the status of Chiller. Status viewing: ON/OFF status Mode (Cooling/Heating/Boiling) Mode set temperature Compressor status (ON/OFF/DEFROST) Water in, Water out, Outdoor air and Panel temperature Chiller Model (Chiller, Heat Pump, Chiller/Boiler, Chiller+Boiler, Heat Pump/Boiler, Heat Pump+Boiler) Advance Parameter settings Defrost sensor temperatures Compressor Discharge sensor temperatures...
  • Page 10 5.2 Menu Structure Menu Structure Diagram for Chiller...
  • Page 11 5.3 Chiller Menu Structures 5.3.1 Summary Pages There are 4 pages in [Summary Pages]. Press UP or DOWN for page scrolling. Press ENTER to go into [Main Menu]. Time and date are shown on top of each page. Beside that, the bottom of each page shows current control unit of the Chiller.
  • Page 12 5.3.2 Main Menu Press ENTER in [Summary Pages] to go into this menu. MAIN MENU Operating Menu Setting Menu Timer Menu Alarm Menu Display Menu Operation Menu MAIN MENU There are 5 sub menus in [Main Menu]. Press UP or DOWN to select sub menus, ENTER to enter into the sub menu or press ESC to exit to [Summary Pages].
  • Page 13 5.3.2.2 Settings Menu Select [Settings Menu] in [Main Menu] and press ENTER to go into this menu. SETTINGS MENU Set Parameter Change Password Panel Option Set Panel ID Operation Menu MAIN MENU Some advance settings can be found here. Press UP or DOWN to select each settings, ENTER to start the setting or press ESC here to exit to [Main Menu].
  • Page 14 5.3.2.2.3 Panel Option Select [Panel Option] in [Settings Menu] and press ENTER to go into this menu. Backlight : Normal Buzzer : On Screen Saver : Disable Timeout : 5m Contrast : 50% Brightness : Medium Temp Unit : ºC Operation Menu MAIN MENU User can do some miscellaneous settings for the panel.
  • Page 15 5.3.2.3 Timer Menu Select [Timer Menu] in [Main Menu] and press ENTER to go into this menu. TIMER MENU Clock Setting Date Setting Timer Schedule Timer : Disable Operation Menu MAIN MENU All the timer/schedule settings are included in this menu. Press UP or DOWN to select each settings, ENTER to start the setting or press ESC here to exit to [Main Menu].
  • Page 16 5.3.2.3.2 Set Date Select [Date Setting] in [Timer Menu] and press ENTER to go into this menu. Set Date : yyyy mm dd 2000 / 01 / 01 Operation Menu MAIN MENU User can set the date in this menu. The date is set according to sequence below: (year) / (month) / (day) Press [ESC] to exit to [Timer Menu].
  • Page 17 5.3.2.4.1 Show Alarms Select [Show Alarms] in [Alarm Menu] and press ENTER to go into this menu. [Ch 0] Alarm 1 Comp 1 overload 01/ 01 / 00 12:00am Operation Menu MAIN MENU User can view all the fault/alarm records in this menu. The record shows - Alarm type - Alarm occurred date...
  • Page 18 5.3.2.5.1 Defrost Sensor Select [Defrost Sensor] in [Display Menu] and press ENTER to go into this menu. Defrost Sensor Cimo 1 : 12.8ºC Operation Menu MAIN MENU User can view the defrost sensor temperature for each compressor in the Chiller. Press [ESC] to exit to [Display Menu].
  • Page 19 6. OPERATION USER MANUAL 6.1 Starting Chiller panel can be set as Master or Slave panel unit. When the Panel ID is set to ‘0’, it acts like a Master panel, whereas it is Slave panel if Panel ID is set to others number (1-50). Chiller panel can control the Chiller if both ID no.
  • Page 20 6.2 Chiller Operation Control 6.2.1 Starting During power on for the Chiller Panel, it needs to take several times to collect information from the Chiller. At this time, all the status will show ‘--’. Please ensure the particular Chiller exists in the network. When the process is completed, user can start to control the Chiller using the panel.
  • Page 21 6.2.3 Switching ON/OFF There are several ways to switch ON/OFF for the Chiller. [Summary Pages] Press and hold ON/OFF button (hold 1 second). Please note that the ON/OFF button will only function in [Summary Pages]. [Operation Menu] <ENTER> <ENTER> Summary Pages Main Menu Operation Menu <ESC>...
  • Page 22 6.2.4 Switching Mode There are several ways to switch the mode for the Chiller. Please take note that some mode cannot be set due to current Chiller model settings. Mode Chiller Model Cooling Heating Boiling - Allow to set Chiller - Not allow to set Heat Pump Auto...
  • Page 23 6.2.5 Changing Mode Set Temperature There are 2 ways to change the mode set temperature for the Chiller. i) [Operation Menu] <ENTER> <ENTER> Summary Pages Main Menu Operation Menu <ESC> <ESC> OPERATION MENU Status : ON In [Operation Menu], select “Cool Temp” / “Heat Mode : Cooling Temp”...
  • Page 24 6.2.6 Manual Defrost User can choose which compressor will go into manual defrost cycle by using the Chiller Panel, as long as the condition is fulfilled with defrost condition. This can be done in [Operation Menu]. <ENTER> <ENTER> Summary Pages Main Menu Operation Menu <ESC>...
  • Page 25 6.2.7 Advance Parameter Settings The Chiller Panel provide user a lot of advance parameter settings for the Chiller. The parameters are divided into 7 groups. There all are stored in [Set Parameter] menu and it is password-protected layer in the panel. *CAUTION: INPROPER SETTINGS WILL CAUSE PERMANENT DAMAGE TO THE CHILLER!!! <ENTER>...
  • Page 26 4) Compressor C1 Min Run : 120s C2 Min Stop : 240s C3 2On Interval : 360s C4 2Cp ON Dly : 15s C5 P-Cp ON Dly : 60s C6 Cp-P OFF Dly : 60s C7 Cp Cut Off : 120ºC 5) Condenser Defrost D1 Start Temp : -3ºC...
  • Page 27 6.2.8 Changing Password For security purpose, some places in the panel are password-protected. User can change the password at anytime. <ENTER> <ENTER> Summary Pages Main Menu Settings Menu <ESC> <ESC> <ENTER> <ESC> Change Password Please enter the User needs to enter the old password in order to Old password…….
  • Page 28 6.2.9 Clock Setting User can set the clock for the panel. <ENTER> <ENTER> Summary Pages Main Menu Timer Menu <ESC> <ESC> <ENTER> <ESC> Set Time UP or DOWN to change ‘hour’. ENTER to set ‘minute’ Set Time : or ESC to exit to [Timer Menu]. hh mm UP or DOWN to change ‘minute’.
  • Page 29 6.2.11 7 Days Programmable Setting There are 2 ON/OFF events in one day for the schedule. This schedule is applicable to all the chillers in the network. <ENTER> <ENTER> Summary Pages Main Menu Timer Menu <ESC> <ESC> <ENTER> <ESC> Set Schedule Timer 1 Timer 2 OFF ON...
  • Page 30 6.2.12 Viewing Alarm / Erase Alarm Record Whenever a new fault/alarm is occurred, there will be a message pop up to show the fault/alarm. Backlight will blinking with beeping sound (if “Alarm Buzzer” is set ON). If the fault/alarm has not been dissolved from the Chiller, a sign [A] will be shown in the [Summary Pages].
  • Page 31 6.2.13 Viewing Defrost Sensor Temperature The Chiller Panel displays defrost sensor temperature for each compressor in [Defrost Sensor] in [Display Menu]. <ENTER> <ENTER> Summary Pages Main Menu Display Menu <ESC> <ESC> <ENTER> <ESC> Defrost Sensor Defrost Sensor Press ESC to exit to [Display Menu] Comp 1 : 12.8ºC 6.2.14 Viewing Compressor Discharge Temperature...
  • Page 32 6.2.15 Viewing/Clear Compressor Run Time User can view / clear the compressor run time for the Chiller in [Comp Run Time] in [Display Menu]. <ENTER> <ENTER> Summary Pages Main Menu Display Menu <ESC> <ESC> <ENTER> <ESC> Comp Run Time Comp Run Time Press UP or DOWN to select the compressor.
  • Page 33 Parameter Value Description Normal Turn ON backlight for 30s via key press Backlight Always Always ON backlight Enable beeping sound when fault/ alarm occurred Buzzer Disable beeping sound when fault / alarm occurred Enable Show screen saver when timeout * Screen Saver Disable No screen save * Timeout...
  • Page 34 7. PROBLEMS AND TROUBLESHOOTING Symptoms Possible Cause Troubleshooting Panel gets hot • Change a new panel module and turn ON the unit again • Wiring fault in 12VDC supply abnormally after the verification • Wiring fault in the 12VDC • Correct the wiring problem supply The LCD no display (blank screen)
  • Page 35 8. APPENDIX Resolution GENERAL Type Unit Default Model Flag O=Chiller, (Chiller+Boiler) 1=Heat Pump, 2=Chiller/ Boiler, 3=Heat pump/Boiler, 4=Chiller+Boiler, 5=Heat pump+Boiler Number of compressor Flag 1=1 compressor, 2=2 compressor 3=3 compressor, 4=4 compressor On/off input Flag 0 (disable) 0=disable, 1=enable Cool/Heat input Flag 0 (disable) 0=disable, 1=enable...
  • Page 36 Maximum duration of defrost cycle Defrost interval time Delay before defrosting 1990 Delay after defrosting 1990 COOL MODE ANTIFREEZE Type Unit Default Resolution Antifreeze heater set-point °C ( F) 5 (41) -40 (-40) 40 (104) 1 Antifreeze heater differential °C (°F) 2 (3.6) 0.4 (0.7) 10 (18)

  • Page 37: Specifications

    Specifications Air Cooled Chiller – R22 Cooling Only MODEL MAC080C MAC100C MAC120C MAC150C Btu/hr 78000 93000 116000 138000 NOMINAL CAPACITY kcal/hr 19657 23437 29233 34777 Watt 22860 27257 33998 40445 MATERIAL Electro-galvanized Mild Steel CASING FINISH Polyester Powder THICKNESS HEIGHT (H) 1245 1245 DIMENSION...
  • Page 38 Air Cooled Chiller – R22 Heat Pump MODEL MAC080CR MAC100CR MAC120CR MAC150CR Btu/hr 77000 / 90000 94000 / 110000 113000 / 120000 138000 / 132000 NOMINAL CAPACITY (COOLING / HEATING) kcal/hr 19405 / 22680 23689 / 27721 28477 / 30241 34778 / 33266 Watt 22567 / 26376...
  • Page 39 Air Cooled Chiller – R407 Cooling Only MODEL M4AC080C M4AC100C M4AC120C M4AC150C Btu/hr 74000 88000 115000 137000 NOMINAL CAPACITY kcal/hr 18649 22177 28982 34525 Watt 21688 25791 33705 40152 MATERIAL Electro-galvanized Mild Steel CASING FINISH Polyester Powder THICKNESS HEIGHT (H) 1245 1245 DIMENSION...
  • Page 40 Air Cooled Chiller – R407 Heat Pump MODEL M4AC080CR M4AC100CR M4AC120CR M4AC150CR Btu/hr 74000 / 90000 88000 / 98000 110000 / 118000 132000 / 123000 NOMINAL CAPACITY (COOLING / HEATING) kcal/hr 18649 / 22681 22177 / 24697 27721 / 29737 33266 / 30997 Watt 21688 / 26377...

  • Page 47: Technical Data

    Technical Data Water Pressure Drop MAC/M4AC080C/CR Flowrate Pressure drop BPHE Pump head Hydraulic life Unit Water Unit Pressure Total Pressure (m3/hr) (psig) (kPa) (kPa) (kPa) Piping (psig) Drop (psig) Drop (kPa) 2,81 18.7 32.6 49.3 10.1 69.6 10.6 13.6 93.5 13.8 17.6 121.0...
  • Page 48 Correction Factors with GLYCOL use CAPACITY FACTOR GLYCOL LWT/ deg C -12.2 0.827 0.735 -9.4 0.88 0.85 0.756 -6.7 0.876 0.781 -3.9 0.925 0.925 0.892 0.796 -1.1 0.945 0.938 0.906 0.809 0.956 0.949 0.918 0.82 0.965 0.959 0.927 0.829 0.962 0957 0.926 10.0...

  • Page 49: Outlines And Dimensions

    Outlines and Dimensions Model : M4AC/ MAC080/ 100 C/CR...
  • Page 50 Model : M4AC/ MAC120/150 C/CR...
  • Page 51 Accessory Hydraulic Kit (Optional) Hydraulic kit consists of 135L capacity water storage buffer tank, over pressure release value and drainage point.

  • Page 52: Wiring Diagrams

    Wiring Diagrams Model : M4AC / MAC080 / 100 / 120 /150C (Isolator Switch)
  • Page 53 Model : M4AC / MAC080 / 100 / 120 / 150C (Terminal Block)
  • Page 54 Model : M4AC / MAC080 / 100 / 120 / 150CR (Isolator Switch)
  • Page 55 Model : M4AC / MAC080 / 100 / 120 / 150CR (Terminal Block)

  • Page 56: Special Precautions For R407C

    Special Precautions for R407C 1) What is new refrigerant R407C? R407C is a zeotropic refrigerant mixture which has zero ozone depletion potential and thus conformed to the Montreal Protocol regulation. It requires Polyol ester oil (POE) oil for its compressor's lubricant. Its refrigerant capacity and performance are about the same as the refrigerant R22.
  • Page 57 c) Ensure that the compressor is not expose to open air for more than the recommended time specified by its manufacturer (typically less than 10 minutes). Removed the seal-plugs only when the compressor is about to be brazed. d) The system should be thoroughly vacuumed to 1.0 Pa (-700mmHg) or lower. This vacuuming level is more stringent than R22 system so as to ensure no incompressible gas and moisture in the system.

  • Page 58: Installation

    Installation M4AC / MAC080 / 100 / 120 / 150 C/CR 500mm 500mm Safety Precautions Before installing the air conditioner unit, please read the following safety precautions carefully Warning Installation and maintenance should be performed by qualified persons who are familiar with local code and regulation, and experienced with this type of appliance.
  • Page 59 Caution Please take note of the following important points when installing. • Do not install the unit where leakage of flammable gas may occur. If gas leaks and accumulates around the unit, it may cause fire ignition. Ensure that the drainage piping is connected properly. If the drainage piping is not connected properly, it may cause water leakage which will dampen the furniture.
  • Page 60 Electrical and Wiring Refer to the wiring diagram provided on the unit when making electrical wiring. Install an isolator (if it is not provided) to prevent electrical shock. Do not ground any electrical equipment to the water piping. Operation of the mini chiller without any fan speed controller (Field supply) is limited to an ambient temperature of 20ºC.
  • Page 61 WARNING All terminals and connection must be tightened. Avoid any wires from touching the refrigerant pipe. Apply insulation if necessary. Avoid any wires from touching the moving components such as, fan motor, pump & compressor Water Piping System Setup Fill up the water circuit after connecing all the pipes and equipment. Perform leak checks for all connections and joints.
  • Page 62 Control Operation Guide The unit is equipped with a microprocessor controller board. The microprocessor controller is provided to give temperature control for the system by accurately measuring the ambient temperature, and controlling the water entering and water leaving temperature. The temperature setting in the unit is preset in the factory. It is not recommended to change the setting unless necessary.

  • Page 63: Servicing And Maintenance

    Servicing and Maintenance Servicing Servicing or maintenance of these unit must be carried out by experienced personnel with specific training in refrigeration. Repeated check the safety devices and continuous cycling of control components must be analyzed and corrected before being reset. The simple design of the refrigeration circuit totally eliminates potential problems during normal unit operation.

  • Page 64: Troubleshooting

    Troubleshooting When any malfunction is occurred, immediately switch off the power supply to the unit, and contact the local dealer, if necessary. Some simple troubleshooting tips are given below: SYMPTOMS POSSIBLE CAUSES REMEDIAL ACTION No power supply. 1. Compressor Check power supply. Fuses blown or automatic circuit break- does not start.

  • Page 65: Schematic Diagram

    Schematic Diagram M4AC/ MAC080C, 100C, 120C, 150C Refrigerant Circuit Diagram M4AC/ MAC080CR, 100CR, 120CR, 150CR Refrigerant Circuit Diagram...

  • Page 66: Parts List And Exploded View

    Part Lists and Exploded View M4AC / MAC080 / 100C/CR ASSY, PANEL BASE MAIN BRACKET, BPHE FAN BLADE 24" ASSY, INS. PARTITION PANEL SUPPORT, TUBE FAN, GUARD 24" SUPPORT, FLUTTED WIRE CLIP, FILTER COIL GUARD, LEFT/RIGHT ASSY, RIGHT PANEL ASSY, COMPRESSOR COIL GUARD, BACK ASSY, LEFT PANEL ASSY, BPHE...
  • Page 67 M4AC/ MAC120/ 150C/CR ASSY. PANEL BASE MAIN ASSY, DOOR PANEL RIGHT MAIN CLAMP, EXPANSION TANK ASSY, INS. PARTITION PANEL ASSY, DOOR PANEL LEFT MAIN PUMP, WATER ASSY, COMPRESSOR ASSY, RIGHT PANEL EXPANSION TANK (ZR94KC-TFD) ASSY, LEFT PANEL ACCUMULATOR BRACKET, MOTOR PANEL, COIL SUPPORT LIQUID RECEIVER MOTOR...
  • Page 68 REGISTERED ISO 9002 ©2004 McQuay International +1 (800) 432-1342 www.mcquay.com...

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