MAC - C - 2004 Air-Cooled Mini Chiller Models: MAC MAC MAC MAC 080 C/CR 100 C/CR 120 C/CR 150 C/CR M4AC 080 C/CR M4AC 100 C/CR M4AC 120 C/CR M4AC 150 C/CR
Contents Nomenclature.................................................................................................................. 2 General Features and Specifications...................................................................... 2 - 3 Chiller Panel Controller .......................................................................................... 4 - 35 Specifications ........................................................................................................
Nomenclature M 4 AC 080 Brand Name _ R22 Equipment Air Cooled (McQuay) 4 R407C Equipment Chiller Norminal Cooling Capacity C R Generation _ Cooling 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. 0-50-100% of rated capacity.
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 I 1-1/4” female thread couplings for both supply and return pipes. Anti-freeze protection The chiller unit has several anti-freeze protection features: 1.
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 x Only supply DC voltage (9-17V, typically 12V, maximum current 200mA) as a power source to the device. x Input contact voltage supply should limit to 12VDC or 24VAC. x Isolated all the low voltage wiring (communication bus, etc.) from high voltage power supply wiring. 2. GENERAL DESCRIPTION 2.
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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 (Master) Chiller Panel 1 (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).
4.2 Others Configuration x x x 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. Without the backup battery, the panel will always reset the time to 12:00am, 1st Jan 2000. 4.
5. SOFTWARE DESCRIPTION 5.1 Introduction The Chiller Panel Controller can be used to control/display the status of Chiller.
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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.
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]. 5.3.2.1 Operation Menu Select [Operation Menu] in [Main Menu] and press ENTER to go into this menu. OPERATION MENU Status Mode Cool Temp Heat Temp OPERATION MENU : ON : Cooling : 12.0ºC : 40.
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]. Settings: - Set Parameter - Password Changing - Panel Option - Set Panel ID 5.3.2.2.
5.3.2.2.3 Panel Option Select [Panel Option] in [Settings Menu] and press ENTER to go into this menu. Backlight Buzzer Screen Saver Timeout Contrast Brightness Temp Unit : Normal : On : Disable : 5m : 50% : Medium : ºC Operation Menu MAIN MENU User can do some miscellaneous settings for the panel. These settings would not affect whole system performance.
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]. Settings: - Set Clock - Set Date - Set Schedule (7 days Programmable Timer) - Enable/Disable Timer Schedule 5.3.2.3.
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]. 5.3.2.3.3 Set Schedule Select [Schedule Timer] in [Timer Menu] and press ENTER to go into this menu.
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 - Alarm occurred time - Alarm occurred unit (Chiller ID) Beside that, user can erase the alarm record in this menu. Press [ESC] to exit to [Alarm Menu]. 5.3.2.4.
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]. 5.3.2.5.2 Discharge Sensor Select [Discharge Sensor] in [Display Menu] and press ENTER to go into this menu. Discharges Sensor Comp 1 : 36.5ºC User can view the discharge sensor temperature for each compressor in the Chiller.
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. (Panel ID and Chiller ID) are same. For example: Panel ID 1 can only control Chiller ID 1 Master Panel can choose to control each Chiller or control all Chiller at once in the network.
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. 01 / 01 /2000 12:00am 01 / 01 /2000 12:00am Status : -- Status : ON Mode : -- Mode : Cooling Cool Temp : -- Cool Temp : 12.
6.2.3 Switching ON/OFF There are several ways to switch ON/OFF for the Chiller. i) [Summary Pages] Press and hold ON/OFF button (hold 1 second). Please note that the ON/OFF button will only function in [Summary Pages]. ii) [Operation Menu] Summary Pages Main Menu Operation Menu OPERATION MENU Status Mode Cool Temp Heat Temp In [Operation Menu], select “Status” and press ENTER. : ON : Cooling : 12.0ºC : 40.
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. Chiller Model Cooling Chiller Mode Heating Boiling x x Heat Pump ¥ ¥ ¥ x Chiller / Boiler ¥ X ¥ Heat Pump / Boiler ¥ ¥ ¥ Chiller + Boiler ¥ x Auto Heat Pump+ Boiler ¥ ¥ Auto ¥ x Auto - Allow to set - Not allow to set - Turn ON automatically i) [Summary Pages] Cooling - Press and hold COOL button.
6.2.5 Changing Mode Set Temperature There are 2 ways to change the mode set temperature for the Chiller. i) [Operation Menu] Summary Pages Main Menu Operation Menu OPERATION MENU Status Mode Cool Temp Heat Temp : ON : Cooling : 12.0ºC : 40.0ºC In [Operation Menu], select “Cool Temp” / “Heat Temp” and press ENTER to start setting or ESC to exit to [Main Menu].
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]. Summary Pages Main Menu Operation Menu Please take note that “Manual Defrost” option will only available in HEATING mode. It will disappear in COOLING/BOILING mode.
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!!! Summary Pages Main Menu Settings Menu Key in password Set Parameter 7 groups of Advance Parameter: 1) General G1 Model G2 No.
4) Compressor C1 Min Run C2 Min Stop C3 2On Interval C4 2Cp ON Dly C5 P-Cp ON Dly C6 Cp-P OFF Dly C7 Cp Cut Off : 120s : 240s : 360s : 15s : 60s : 60s : 120ºC 5) Condenser Defrost D1 Start Temp D2 End Temp D3 Max Dura D4 Interval D5 Dly Bfr Def D6 Dly Aft Def : -3ºC : 14ºC : 10m : 45m : 0s : 0s 6) Cool Mode Antifreeze A1 Heater SP A2 Heater Diff A3 Sensor A4 Alarm SP A5 Alarm Diff : 5ºC : 2.0ºC : Leave : 3ºC : 2.
6.2.8 Changing Password For security purpose, some places in the panel are password-protected. User can change the password at anytime. Main Menu Summary Pages Settings Menu Change Password Please enter the Old password……. 0 ---- User needs to enter the old password in order to change the password. Change the 1st digit value via UP or DOWN. Press ENTER to start enter 2nd digit and the rest, or ESC to exit at anytime. Password accepted …. Password error ….
6.2.9 Clock Setting User can set the clock for the panel. Summary Pages Main Menu Timer Menu Set Time UP or DOWN to change ‘hour’. ENTER to set ‘minute’ or ESC to exit to [Timer Menu]. Set Time : hh mm UP or DOWN to change ‘minute’. ENTER to confirm or ESC to set ‘hour’ again. 00 : 00 6.4.10 Date Setting User can set the date for the panel.
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.
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]. Whereas, it will return to [Summary Pages] (from pop up menu) automatically if the fault/alarms have been dissolved.
6.2.13 Viewing Defrost Sensor Temperature The Chiller Panel displays defrost sensor temperature for each compressor in [Defrost Sensor] in [Display Menu]. Summary Pages Main Menu Display Menu Defrost Sensor Defrost Sensor Comp 1 Press ESC to exit to [Display Menu] : 12.8ºC 6.2.14 Viewing Compressor Discharge Temperature The Chiller Panel displays compressor discharge temperature for each compressor in [Discharge Sensor] in [Display Menu].
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]. Summary Pages Main Menu Display Menu Comp Run Time Comp Run Time Comp 1 Press UP or DOWN to select the compressor. ENTER to start clear the run time, or ESC to exit to [Display Menu]. : 13579h Clear Run Time ? Press ENTER and key in the password to confirm or ESC to cancel. Press Enter to clear, Or ESC to exit 6.2.
Parameter Value Backlight Buzzer * Screen Saver * Timeout Contract Brightness Temp Unit Normal Always ON OFF Enable Description Turn ON backlight for 30s via key press Always ON backlight Enable beeping sound when fault/ alarm occurred Disable beeping sound when fault / alarm occurred Show screen saver when timeout Disable 1 – 30m 0 – 100% OFF Low, Medium, High ºC No screen save Timeout for showing screen saver Adjust the contrast setting for the LCD panel No backlight Adjust the backlight intensity D
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D3 D4 D5 D6 A1 A2 A3 A4 A5 Maximum duration of defrost cycle Defrost interval time Delay before defrosting Delay after defrosting COOL MODE ANTIFREEZE Antifreeze heater set-point Antifreeze heater differential Antifreeze sensor select 0=Leaving water, 1=Entering water Antifreeze alarm set-point Antifreeze alarm differential ALARM AND CONTACT P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 Flow switch confirmation time Flow switch alarm delay at pump start Low pressure alarm delay at c
Specifications Air Cooled Chiller – R22 Cooling Only MODEL NOMINAL CAPACITY CASING DIMENSION MATERIAL FINISH THICKNESS HEIGHT (H) WIDTH (W) DEPTH (D) WEIGHT NOISE LEVEL PACKING HEIGHT (H) DIMENSION WIDTH (W) DEPTH (D) CONDENSER COIL TYPE MATERIAL TUBE WALL THICKNESS OUTER DIAMETER MATERIAL FIN THICKNESS ROWS FIN PER INCH TOTAL FACE AREA EVAPORATOR TYPE PLATE MATERIAL NOMINAL WATER FLOW CONDENSER FAN TYPE/DRIVE QUANTITY BLADE MATERIAL BLADE DIAMETER POWER SUPPLY RATED RUNNING CURRENT RATED INPUT RATED OU
Air Cooled Chiller – R22 Heat Pump MODEL NOMINAL CAPACITY (COOLING / HEATING) CASING DIMENSION MATERIAL FINISH THICKNESS HEIGHT (H) WIDTH (W) DEPTH (D) WEIGHT NOISE LEVEL PACKING HEIGHT (H) DIMENSION WIDTH (W) DEPTH (D) CONDENSER COIL TYPE MATERIAL TUBE WALL THICKNESS OUTER DIAMETER MATERIAL FIN THICKNESS ROWS FIN PER INCH TOTAL FACE AREA EVAPORATOR TYPE PLATE MATERIAL NOMINAL WATER FLOW CONDENSER FAN TYPE/DRIVE QUANTITY BLADE MATERIAL BLADE DIAMETER POWER SUPPLY RATED RUNNING CURRENT RATED INPUT(COOLII
Air Cooled Chiller – R407 Cooling Only MODEL NOMINAL CAPACITY CASING DIMENSION MATERIAL FINISH THICKNESS HEIGHT (H) WIDTH (W) DEPTH (D) WEIGHT NOISE LEVEL PACKING HEIGHT (H) DIMENSION WIDTH (W) DEPTH (D) CONDENSER COIL TYPE MATERIAL TUBE WALL THICKNESS OUTER DIAMETER MATERIAL FIN THICKNESS ROWS FIN PER INCH TOTAL FACE AREA EVAPORATOR TYPE PLATE MATERIAL NOMINAL WATER FLOW CONDENSER FAN TYPE/DRIVE QUANTITY BLADE MATERIAL BLADE DIAMETER POWER SUPPLY RATED RUNNING CURRENT RATED INPUT RATED OUTPUT MOTOR POL
Air Cooled Chiller – R407 Heat Pump MODEL NOMINAL CAPACITY (COOLING / HEATING) CASING DIMENSION MATERIAL FINISH THICKNESS HEIGHT (H) WIDTH (W) DEPTH (D) WEIGHT NOISE LEVEL PACKING HEIGHT (H) DIMENSION WIDTH (W) DEPTH (D) CONDENSER COIL TYPE MATERIAL TUBE WALL THICKNESS OUTER DIAMETER MATERIAL FIN THICKNESS ROWS FIN PER INCH TOTAL FACE AREA EVAPORATOR TYPE PLATE MATERIAL NOMINAL WATER FLOW CONDENSER FAN TYPE/DRIVE QUANTITY BLADE MATERIAL BLADE DIAMETER POWER SUPPLY RATED RUNNING CURRENT RATED INPUT(COOLI
40 8.0 8.4 9.1 26.4 26.7 27.5 28.2 28.9 29.8 30.5 30.7 31.2 32.1 35.9 37.1 37.3 38.1 38.7 39.8 43.2 44.5 45.4 45.8 46.7 47.9 7 8 9 10 5 6 7 8 9 10 5 6 7 8 9 10 5 6 7 8 9 10 9.8 7.6 7.0 7.8 8.5 7.4 7.0 6.5 7.0 6.2 6.5 6.0 5.4 5.5 5.0 5.8 5.0 5.4 4.7 4.5 26.2 4.2 25.4 COMP. INPUT kW 6 19 5 COOL CAP. kW CH8-30 PUMP (120 & 150) CH4-40 PUMP (080 & 100) MAC150C MAC120C MAC100C MAC080C MODEL Cooling Only Refrigerant: R22 44.9 44.1 42.6 43.1 41.
41 5 6 7 8 9 10 5 6 7 8 9 10 5 6 7 8 9 10 5 6 7 8 9 10 22.1 22.8 23.2 23.6 24.2 24.8 27.5 27.7 29.0 29.6 30.2 31.0 33.7 34.4 35.2 35.6 36.4 37.7 39.6 41.0 41.6 42.7 43.6 45.2 COOL CAP. kW CH8-30 PUMP (120 & 150) CH4-40 PUMP (080 & 100) MAC150CR MAC120CR MAC100CR MAC080CR MODEL 19 4.5 4.9 5.1 5.4 5.9 6.3 5.3 5.7 5.9 6.3 6.8 7.4 6.2 6.6 7.0 7.4 8.0 8.6 6.9 7.4 7.9 8.3 9.0 9.7 COMP. INPUT kW Heat Pump – Cooling Mode Refrigerant: R22 LEAVING WATER TEMP (°C) 21.6 22.4 22.8 23.3 23.8 24.5 26.7 27.
42 35 40 45 50 55 35 40 45 50 55 35 40 45 50 55 35 40 45 50 55 -7 -5 0 4 7 AMBIENT TEMPERATURE (°C) 10 15 21 16.5 16.1 15.8 15.2 14.5 20.7 20.3 19.5 19.0 18.1 21.1 19.9 19.7 19.3 18.2 21.5 20.5 20.1 19.6 18.5 4.2 4.8 5.1 5.1 5.2 6.5 7.3 8.1 8.2 8.3 7.3 8.2 8.8 9.1 9.3 8.8 9.9 10.4 10.6 10.7 18.1 17.7 17.3 16.7 16.0 22.6 22.1 21.4 20.8 19.9 23.0 22.2 22.0 21.2 20.2 23.8 23.2 22.8 22.2 20.9 4.6 5.1 5.5 5.5 5.6 6.6 7.4 8.2 8.3 8.5 7.5 8.5 9.1 9.3 9.6 9.0 10.2 10.7 10.9 11.1 22.2 21.6 21.1 20.
43 5 6 7 8 9 10 5 6 7 8 9 10 5 6 7 8 9 10 5 6 7 8 9 10 24.0 24.7 24.9 25.2 26.0 26.6 26.5 27.3 27.9 28.1 28.6 29.4 34.1 35.2 35.5 36.2 36.8 37.8 42.5 43.8 44.7 45.1 45.9 47.2 COOL CAP. kW CH8-30 PUMP (120 & 150) CH4-40 PUMP (080 & 100) M4AC150C M4AC120C M4AC100C M4AC080C MODEL 19 Cooling Only Refrigerant: R 407C LEAVING WATER TEMP (°C) 4.6 4.9 5.1 5.5 5.9 6.4 5.2 5.6 5.7 6.2 6.7 7.2 6.3 6.7 7.1 7.5 8.0 8.7 7.6 8.2 8.6 9.1 9.9 10.6 COMP. INPUT kW 21.9 22.6 23.0 23.2 23.6 24.3 25.5 26.3 26.
44 5 6 7 8 9 10 5 6 7 8 9 10 5 6 7 8 9 10 5 6 7 8 9 10 21.2 21.9 22.3 22.7 23.2 23.8 25.9 26.1 27.3 27.8 28.4 29.2 33.2 33.9 34.7 35.1 35.9 37.2 39.0 40.4 41.0 42.1 43.0 44.5 COOL CAP. kW CH8-30 PUMP (120 & 150) CH4-40 PUMP (080 & 100) M4AC150CR M4AC120CR M4AC100CR M4AC080CR MODEL 19 4.7 5.1 5.3 5.7 6.2 6.6 5.4 5.8 6.0 6.4 7.0 7.5 6.3 6.8 7.2 7.6 8.1 8.8 7.6 8.2 8.6 9.1 9.8 10.6 COMP. INPUT kW Heat Pump - Cooling Only Refrigerant: R 407C LEAVING WATER TEMP (°C) 20.8 21.5 22.0 22.4 22.9 23.
45 35 40 45 50 55 35 40 45 50 55 35 40 45 50 55 35 40 45 50 55 -7 -5 0 4 7 AMBIENT TEMPERATURE (°C) 10 15 21 16.0 15.6 15.2 14.6 14.0 16.9 16.5 15.9 15.5 14.8 18.6 17.9 17.6 16.9 16.2 19.4 18.9 18.6 18.1 16.9 6.4 7.2 7.7 7.8 7.9 7.3 8.1 9.0 9.1 9.3 8.3 9.3 10.0 10.3 10.5 10.0 11.3 11.9 12.1 12.3 18.6 18.2 17.7 17.2 16.4 19.2 18.7 18.1 17.7 16.8 22.7 21.9 21.7 20.9 20.0 23.7 23.1 22.7 22.1 20.8 6.5 7.3 7.8 7.9 8.0 7.4 8.3 9.1 9.2 9.4 8.4 9.4 10.1 10.4 10.7 10.3 11.6 12.2 12.4 12.6 25.1 24.
Technical Data Water Pressure Drop MAC/M4AC080C/CR Flowrate (m3/hr) Pressure drop (psig) BPHE (kPa) Pump head (kPa) Hydraulic life (kPa) Unit Water Piping (psig) Unit Pressure Drop (psig) Total Pressure Drop (kPa) 2.4 3.2 4 4.8 5.6 2.0 3.6 5.5 7.8 10.6 14 25 38 54 73 300 270 260 230 200 2,81 237 211 160 106 0.7 1.1 1.7 2.3 3.0 2.7 4.7 7.2 10.1 13.6 18.7 32.6 49.3 69.6 93.5 6.4 13.8 95 175 54 3.8 17.6 121.
Correction Factors with GLYCOL use CAPACITY FACTOR GLYCOL LWT/ deg C 30 40 -12.2 0.8 0.7 -9.4 0.827 0.735 10 20 -6.7 0.88 0.85 0.756 -3.9 0.9 0.876 0.781 -1.1 0.925 0.925 0.892 0.796 1.7 0.945 0.938 0.906 0.809 4.4 0.956 0.949 0.918 0.82 7.2 0.965 0.959 0.927 0.829 10.0 0.962 0957 0.926 0.828 GLYCOL % WATER FLOW PRESSURE DROP 10 1.015 1.06 20 1.04 1.12 30 1.08 1.18 40 1.135 1.
Outlines and Dimensions Model : M4AC/ MAC080/ 100 C/CR 48
Model : M4AC/ MAC120/150 C/CR 49
Accessory Hydraulic Kit (Optional) Hydraulic kit consists of 135L capacity water storage buffer tank, over pressure release value and drainage point.
Wiring Diagrams Model : M4AC / MAC080 / 100 / 120 /150C (Isolator Switch) 51
Model : M4AC / MAC080 / 100 / 120 / 150C (Terminal Block) 52
Model : M4AC / MAC080 / 100 / 120 / 150CR (Isolator Switch) 53
Model : M4AC / MAC080 / 100 / 120 / 150CR (Terminal Block) 54
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.
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.
Installation 700mm M4AC / MAC080 / 100 / 120 / 150 C/CR 500mm 1100mm 500mm Safety Precautions Before installing the air conditioner unit, please read the following safety precautions carefully ! x x x x x x x 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. All field wiring must be installed in accordance with the national wiring regulation.
! 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. x 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. x Do not overcharge the unit. This unit is factory pre-charged.
Electrical and Wiring x x x x 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. With the fan speed controller (Field supply), the unit is able to operate down to 5ºC.
! x x x 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. Do not start the unit when the system is leaking.
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. A wired controller handset is connected to the microprocessor board.
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. No maintenance work is needed on the refrigeration circuit as long as the unit is operating normally.
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 x No power supply. x Fuses blown or automatic circuit breakdown open. 1. Compressor does not start. x Compressor faulty x Check power supply. x Look for short circuit or grounded wires In motor windings.
Schematic Diagram M4AC/ MAC080C, 100C, 120C, 150C Refrigerant Circuit Diagram M4AC/ MAC080CR, 100CR, 120CR, 150CR Refrigerant Circuit Diagram 64
Part Lists and Exploded View M4AC / MAC080 / 100C/CR I ASSY, PANEL BASE MAIN 19 BRACKET, BPHE 37 FAN BLADE 24" 2 ASSY, INS. PARTITION PANEL 20 SUPPORT, TUBE 38 FAN, GUARD 24" 3 SUPPORT, FLUTTED WIRE 21 CLIP, FILTER 39 COIL GUARD, LEFT/RIGHT 4 ASSY, RIGHT PANEL 22 ASSY, COMPRESSOR 40 COIL GUARD, BACK 5 ASSY, LEFT PANEL 23 ASSY, BPHE PVC, TRUNKING (33.0x45.Ox710.0) 6 PANEL, SUPPORT FRONT 24 PANEL, BPHE CLAMP PVC, TRUNKING (33.Ox45.OxII54.
M4AC/ MAC120/ 150C/CR I 2 ASSY. PANEL BASE MAIN ASSY, INS. PARTITION PANEL 3 ASSY, RIGHT PANEL 19 4 5 6 20 21 22 23 8 ASSY, LEFT PANEL PANEL, COIL SUPPORT STRUCTURE, BACK L/R PANEL, TERMINAL BOX SUPPORT ASSY.
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