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For 18,000 - 55,000 BTU Systems
NOTE
Read the entire instruction manual before
starting the installation. Images are for illustration
purposes only. Actual models may differ slightly.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Installation Manual
Multi-Zone Oudoor Unit
Units Covered In This Manual
SYSTEM
VOLTAGE/
BTU/H
ZONES
3
18,000
208/230-1
4
27,000
208/230-1
5
36,000
208/230-1
6
48,000
208/230-1
6
60,000
208/230-1
3
19,000
208/230-1
4
27.000
208/230-1
5
36,000
208/230-1
6
47,000
208/230-1
6
51,000
208/230-1
OUTDOOR MODEL
PHASE
M03EX-H18B-2A
M04EX-H27B-2A
M05EX-H36B-2A
M06EX-H48B-2A
M06EX-H60B-2A
M03HX-H18B-2A
M04HX-H27B-2A
M05HX-H36B-2A
M06HX-H48B-2A
M06HX-H60B-2A
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Table of Contents
Related Manuals for Midea Xtreme Heat M03EX-H18B-2A
Summary of Contents for Midea Xtreme Heat M03EX-H18B-2A
- Page 1 Installation Manual Multi-Zone Oudoor Unit For 18,000 - 55,000 BTU Systems Units Covered In This Manual SYSTEM VOLTAGE/ BTU/H OUTDOOR MODEL ZONES PHASE 18,000 208/230-1 M03EX-H18B-2A 27,000 208/230-1 M04EX-H27B-2A 36,000 208/230-1 M05EX-H36B-2A 48,000 208/230-1 M06EX-H48B-2A 60,000 208/230-1 M06EX-H60B-2A 19,000 208/230-1 M03HX-H18B-2A 27.000 208/230-1...
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Page 2: Table Of Contents
Table of Contents Safety Considerations ..............3 Fig. 2-2: A B System Connection..........19 Table S-1: Minimum Room Area Requirements ......5 Step 3 - Install Drain Joint ..............19 Table S-2: Minimum Room Area Requirements ......5 Fig. 3-1: Drain Joint Assembly ...........19 Table S-3: Releasable Charge Limited System ...... -
Page 3: Safety Considerations
Safety Considerations WARNING ELECTRICAL WARNINGS WARNING • Only use the specified wire. If the wire is damaged, it must be replaced by the manufacturer, its service agent, Hazards or unsafe practices that may result in severe or similarly qualified persons to avoid a hazard. personal injury or death. -
Page 4: Product Installation
TAKE NOTE OF FUSE SPECIFICATIONS CAUTION The air conditioner’s circuit board (PCB) is designed with a fuse to provide overcurrent protection. The specifications EQUIPMENT DAMAGE HAZARD of the fuse are printed on the circuit board, for example, Failure to follow this caution may result in T3.15 AL/250 VAC, T5 AL/250 VAC, T3.15 A/250 VAC, equipment damage or improper operation. - Page 5 Table S-2: Minimum Room Area Requirements 10. Appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified Amin for operation. hinst [ft/m] [ft. 11. The appliance shall be stored to prevent mechanical mc or mREL 7.5/2.3 7.9/2.4...
- Page 6 Table S-3: Releasable Charge Limited System under pressure of at least these standstill or operation conditions after installation. Detachable joints should Releasable Charge Model Outdoor Unit NOT be used on the indoor side of the unit (brazed, Limited System welded joints could be used). 18K Regular M03EX-H18B-2A - In cases that require mechanical ventilation, ventilation...
- Page 7 b. During the pressure test, the system shall maintain If any hot work is to be conducted on the refrigeration the pressure for at least 1 h with no decrease of equipment or any associated parts, appropriate fire pressure indicated by the test gauge, with test extinguishing equipment shall be available to hand.
- Page 8 all parties are advised. • evacuate; Initial safety checks shall include: • continuously flush or purge with inert gas when using that capacitors are discharged: this shall be done safely a flame to open the circuit; and to avoid the possibility of sparking; •...
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Page 9: Potential Ignition Sources
being used correctly; ensure that they have been evacuated to an acceptable • the recovery process is supervised at all times by a level to make certain that flammable refrigerant does competent person; not remain within the lubricant. The compressor body •... - Page 10 Table S-3: Explanation of symbols displayed on - Auxiliary devices that may be a POTENTIAL IGNITION SOURCE shall not be installed in the ductwork. the indoor unit or outdoor unit Examples of such POTENTIAL IGNITION SOURCES are This symbol shows that this hot surfaces with a temperature exceeding 700 °C and appliance used a flammable electric switching devices.
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Page 11: Specifications
Specifications Table SP-1: Connection Guide Number of units that can be used together Connected units 1-6 units Compressor stop/start frequency Stop time 3 min or more voltage fluctuation within ±10% of rated voltage Power source voltage voltage drop during start within ±15% of rated voltage interval unbalance within ±3% of rated voltage... -
Page 12: Product Overview
Product Overview Fig. PO-1: Wall Mounted Type Indoor Unit 1. Panel Frame 2. Rear panel intake grill Fig. PO-2: Duct/Ceiling Type 3. Front Panel Indoor Unit 4. Air purifying filter & Air filter (behind) 1. Air outlet 5. Horizontal louver 2. - Page 13 Fig. PO-4: Compact 4-Way Cassette Type Fig. PO-5: 1-Way Cassette 1. Drain pump (drain water from Fig. PO-3: Floor Console Type indoor unit) Type Indoor Unit 2. Drain hose 1. Air inlet (with air filter in it) 1. Air flow louver (at air outlet) 3.
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Page 14: Installation Diagram
Installation Diagram Mounting screw ST3.9×25-C-H Air-break Installation plate Switch Clip anchor Air-break Switch Remote controller Drainage holder Pipe 6 5 4 Outdoor Unit Power Cable The maximum amount of the connection cables is 6. This section is for reference only. One-Six Mounting screw ST3.9×25-C-H... -
Page 15: Installation Accessories
Installation Accessories Unpacking The Unit 1. Cut the packing belt. The air conditioning system comes with the following 2. Take the unit out of the package. accessories: Use all of the installation parts and accessories 3. Remove the foam from the unit. to install the air conditioner. -
Page 16: Dimensions
Dimensions Table D-1: Dimensions Unit Sizes Mounting Dimensions Model Width (W) Depth (D) Height (H) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) M03EX-H18B-2A 35 (890) 13-1/2 (342) 26-1/2 (673) 26-1/10 (663) 13-9/10 (354) M03HX-H18B-2A M04HX-H27B-2A 37-1/4 (946) 16-1/8 (410) 31-7/8 (810) 25-1/2 (673) -
Page 17: Clearances
Clearances 20 in. (500 mm) or more when the 20 in. (500 mm) or more when the front and sides of the unit are clear front and sides of the unit are clear 20 in. (500 mm) or more 20 in. (500 mm) when any or more when 2 sides... -
Page 18: Installation
Installation unit. See Fig. C-3 for the required minimum distances between the unit or walls. Step 1 - Check Equipment √ Protected from prolonged periods of direct sunlight or rain. Unpack the unit and move it to the final location. Remove √... -
Page 19: Wall Installation
WALL INSTALLATION comes with a rubber seal. See Fig. 3-1 (A), do the following: 1. Mark the position of bracket holes based on the 1. Fit the rubber seal on the end of the drain joint that will dimensions chart. connect to the outdoor unit. -
Page 20: Step 4 - Refrigerant Piping Connections
Step 4 - Refrigerant Piping Connections When connecting refrigerant piping, DO NOT let substances When preparing refrigerant pipes, take extra care to cut or gases other than the specified refrigerant enter the unit. and flare them properly. This ensures efficient operation The presence of other gases or substances will lower the and minimizes the need for future maintenance. - Page 21 Table 4-2: Flare Dimensions/Tightening Torque c. Place the factory flare nut on the pipe facing the proper direction. Make sure they are facing the right Pipe Size Outside Diameter Flare Dimensions (A) direction. Once the ends are flared, it is impossible to put them on or change their direction.
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Page 22: Step 5 - Power Wiring Connections
Step 5 - Power Wiring CAUTION Connections Wrap insulation around the piping. Direct contact with the bare piping may result in burns or frostbite. Ensure the pipe is properly connected. Over-tightening may damage the WARNING bell mouth and under-tightening may lead to leakage. All tubing bends should be performed with a properly BEFORE PERFORMING ANY ELECTRICAL WORK, READ sized tubing bender to prevent kinking or damaging the... - Page 23 Firmly screw the u-lug of each wire to its corresponding NOTE terminal. • When connecting the wires, strictly follow the wiring 8. Ground the unit in accordance with NEC or CEC and diagram found inside the electrical box cover. local electrical codes. •...
- Page 24 Power Wiring for Different Multi-Split Scenarios NOTE ---- This symbol indicates field wiring. Fig. 5-4: One-Three Models Fig. 5-5: One-Four Models Multi-Zone Outdoor Unit...
- Page 25 Fig. 5-6: One-Five Models Fig. 5-7: One-Six Models • Confirm that the cable thickness is as specified in the CAUTION power source specifications. • Always install an earth leakage circuit breaker in wet or After confirmation of the above conditions, follow these moist areas.
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Page 26: Step 6 - Air Evacuation
Step 6 - Air Evacuation to check for leaks. If there is no change in system NOTE pressure, unscrew the cap from the packed valve When opening valve stems, turn the hexagonal wrench until (high-pressure valve). it hits the stopper. Do not try to force the valve to open 10. -
Page 27: Note On Adding Refrigerant
Start-Up or outdoor unit connections with a soft brush to check for leakage of the connecting points of the piping. If bubbles emerge, the pipes are experiencing leakage. 2. Leak detector: Use the leak detector to check for CAUTION leakage. Failure to perform the test run may result in unit damage, NOTE property damage, or personal injury. -
Page 28: Automatic Wiring/Piping Correction
Automatic Wiring/Piping Correction Automatic Wiring/Piping Correction Function More recent models now feature automatic correction of wiring/piping errors. Press the "check switch" on the outdoor unit PCB board for 5 seconds until the LED displays "CE”, indicating that this function is working, approximately 5-10 minutes after the switch is pressed, the "CE"... -
Page 29: Operation Instructions
Operation Instructions to its original position when power is first turned on. Dust blowing out from the indoor unit. This happens when the air conditioner has not been used for Unit Features a long time or during its first use. Compressor protection Smell emitting from the indoor unit. -
Page 30: Manual Operations And Maintenance
Manual Operations and Maintenance Operation mode selection Optimal operation While two or more indoor units are simultaneously operating, • Adjust the direction of the airflow so that it is not blowing make sure the modes do not conflict with each other. The directly on people. -
Page 31: Troubleshooting
Troubleshooting • The unit emits loud or abnormal sounds CAUTION • A power fuse blows or the circuit breaker frequently trips If any of the following conditions occurs, turn off your unit • Water or other objects fall into or out of the unit immediately! DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT •... - Page 32 Table T-2: When To Call For Repairs When troubles occur, please check the following points before contacting a repair company. Problem Possible Causes Solution The temperature setting may be higher than Lower the temperature setting the ambient room temperature The heat exchanger on the indoor or outdoor Clean the affected heat exchanger unit is dirty Remove the filter and clean it according to the...
- Page 33 Product Warranty Information The Warranty Registration below is a requirement to print a warranty certificate. You’re not mandated to register your products to enjoy the Midea Standard Warranty; however, registration is highly recommended. Registering your warranty within 60 days ensures easy access to support and service when needed.
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