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Table of Contents
Related Manuals for MrCool 18 Series
Summary of Contents for MrCool 18 Series
- Page 1 For 18 SEER R410A Series Unitary Ducted Split AC Thermostat Owner's Manual Commercial Air Conditioners Thank you for choosing MRCOOL, please read this owner’s manual carefully before operation and keep it for future reference. For more information visit www.mrcool.com.
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Page 2: Table Of Contents
4.5 “SET” (Parameters/Functions View and Setting) ........5 4.6 “Enter/Hold” ...................9 4.7 Lock Function ..................10 4.8 Error Display ..................10 5 Installation Instructions ................11 5.1 Physical Dimension ................11 5.2 Installation Recommendations ............12 5.3 Installation ..................13 For more information visit www.mrcool.com. -
Page 3: Safety Considerations
OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label. This product must not be disposed together with the domestic waste. This product has to be disposed at an authorized place for recycling of electrical and electronic appliances. For more information visit www.mrcool.com. -
Page 4: Installation Of The Wired Controller
Terminal Code Description 24 Volt (Neutral) 24 Volt Emergency (Hot) Four-Way Valve Indoor Unit Compressor 1 Compressor 2(Reserved) Auxiliary Electric Heater 1 Auxiliary Electric Heater 2 Temperature Sensor Error Output 485 Communication Port 485 Communication Port For more information visit www.mrcool.com. -
Page 5: Main Page
“Mode” ① ③ ⑤ ⑦ “Set” “ON/OFF” “▲” “Enter/Hold” ② ④ ⑥ ⑧ 4. Function Setting 4.1 “ON/OFF” The controller can be turned on/off by pressing this button, with the corresponding ON/OFF symbol displayed. Fig.4 For more information visit www.mrcool.com. -
Page 6: Mode
Under the main page, the temperature for the current Mode can be adjusted by pressing the “▼/▲” button. ● During temperature adjustment, the temperature value will blink, with the symbol “SET” displayed. ● After the adjustment, it will automatically back to the main page and display the current environment temperature. For more information visit www.mrcool.com. -
Page 7: Set" (Parameters/Functions View And Setting)
The upper value indicates the desired parameter, while the lower value indicates the parameter Fig.9 Table 2 Parameter No. Parameter Description Compressor Runtime Opening Angle of the Electronic Expansion Valve Outdoor Environment Temperature Tube Inlet Temperature of the Outdoor Unit Tube Midway Temperature of the Outdoor Unit For more information visit www.mrcool.com. - Page 8 When the unit is currently under the heating or auxiliary heating mode, the temperature will be set to automatically at 06:00, at 8:00, 75.2F at 21:00 and 62.6F at 22:00. ① After going to this function page, the day (like, “SAT”) will blink and then adjust it through the For more information visit www.mrcool.com.
- Page 9 ④ After the “MIINUTE” is set, press the “Enter/Hold” button to make a confirmation and go to the setting status for setting the temperature under the cooling mode and adjust it through the ▲ or ▼ button. For more information visit www.mrcool.com.
- Page 10 ⑦ After the fourth time period is set, then all parameters of these four time periods will be saved and then back to the page for selecting the days of the week. Then, it is available to continue the setting on other days in the same way. Fig.17 For more information visit www.mrcool.com.
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Page 11: Enter/Hold
‘Enter/Cancel” button, that is, the current setting temperature will be kept unchanged with the change of the setting temperature for each timing period. This function can be deactivated by pressing the “Enter/Hold” button again. When this function is activated, the current setting temperature will always be displayed. For more information visit www.mrcool.com. -
Page 12: Lock Function
Drive Module Reset Failure Compressor Over-current Sensing Circuit Error or Current Sensor Error Compressor Motor Desynchronization Communication Error between the Main Board and the Drive IPM or PFC Over-temperature Protection IPM or PFC Temperature Sensor Error For more information visit www.mrcool.com. -
Page 13: Installation Instructions
5.1 Physical Dimension 5.1.1 Outdoor Unit Fig 20 Outdoor Unit Diagram Table 6-Dimension of Outdoor Unit Unit: Inch Model MAC18024 24-1/2" 24" 24" MAC18036 29" 28" 28" MAC18042 33-1/2" 28" 28" MAC18048 33-1/2" 29-1/2" 29-1/2" For more information visit www.mrcool.com. -
Page 14: Installation Recommendations
9. When necessary, use hanger straps which are 1 in. wide and conform to shape of tubing insulation. (See Fig. 22.) 10. Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of insulation. When outdoor unit is connected to factory--approved indoor unit, outdoor unit contains system For more information visit www.mrcool.com. -
Page 15: Installation
On rooftop applications, locate unit at least 6 inch above roof surface. 5.3.4 Operating Ambient The minimum outdoor operating ambient in cooling mode is 67°F, and the maximum outdoor operating ambient in cooling mode is 115°F. For more information visit www.mrcool.com. - Page 16 500 microns to eliminate contamination and moisture in the system. Table 8—Accessory Usage Required for long line Required for sea coast Required for low-ambient Accessory applications(Over 80 applications(within 2 applications(below 55°F) ft.) miles) Crankcase Heater Evaporator Freeze Thermostat For more information visit www.mrcool.com.
- Page 17 2. Wrap filter drier with damp cloth. 3. Braze filter drier to 5 inch long liquid tube from step 1. 4. Connect and braze liquid refrigerant tube to the filter drier. Fig.23—Liquid Line Filter Drier For more information visit www.mrcool.com.
- Page 18 The deep vacuum method is the most positive way of assuring a system is free of air and liquid water. See Fig. 24. Fig.24- Deep Vacuum Graph Fig.25—Triple Evacuation Method For more information visit www.mrcool.com.
- Page 19 Table 10 Liquid line size (inch) Additional charge for every additional foot (oz) 0.32 0.64 Superheat Method Table 11 SYSTEM SUPERHEAT Ambient Condenser °F Return Air Temperature( Dry bulb) Inlet Temp( °F bulb) For more information visit www.mrcool.com.
- Page 20 The unit cabinet must have an uninterrupted or unbroken ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes. For more information visit www.mrcool.com.
- Page 21 FAN MOTOR FAN CAPACITOR ELECTRONIC INFLATE VALVE HIGH PRESSURE SWITCH LOW PRESSUR SWITCH COMP. OVER LOAD PIPE TEMP. SENSOR ENVIRONMENT TEMP. SENSOR DISCHARGE GAS TEMP. SENSOR Fig. 27 Electric Wiring of the Outdoor Unit( MAC18036/MAC18042 For more information visit www.mrcool.com.
- Page 22 PERSONAL INJURY HAZARD Failure to follow this caution may result in personal injury. Wear safety glasses, protective clothing, and gloves when handling refrigerant and observe the following: Front seating service valves are equipped with Schrader valves. For more information visit www.mrcool.com.
- Page 23 5. Fill out Dealer Installation Checklist and place in customer file. CARE AND MAINTENANCE For continuing high performance and to minimize possible equipment failure, periodic maintenance must be performed on this equipment. Frequency of maintenance may vary depending upon geographic areas, such as coastal applications. For more information visit www.mrcool.com.