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 BEFORE PERFORMING ANY 
 ELECTRICAL WORK, READ THESE 
 WARNINGS

1. All wiring must comply with local and national 

    electrical codes, regulations and must be installed

    by a licensed electrician.

2. All electrical connections must be made according 

    to the Electrical Connection Diagram located on 

    the panels of the indoor and outdoor units. 

3. If there is a serious safety issue with the power 

    supply, stop work immediately. Explain your

    reasoning to the client, and refuse to install the 

    unit until the safety issue is properly resolved.

4. Power voltage should be within 90-110% of rated 

    voltage. Insufficient power supply can cause 

    malfunction, electrical shock, or fire. 

5. Power must be connected to fixed wiring, a

    surge protector and main power switch

    should be installed. 

6. If connecting power to fixed wiring, a service 

    disconnect that disconnects all poles and 

    has a contact separation of at least 1/8in (3mm) 

    must be incorporated in the fixed wiring. The 

    qualified technician must use an approved 

    circuit breaker or switch.    

7. Only connect the unit to an individual branch 

    circuit outlet. Do not connect another 

    appliance to that circuit.   

8. Make sure to properly ground the air conditioner.

9. Every wire must be firmly connected. Loose 

    wiring can cause the terminal to overheat, 

    resulting in product malfunction and possible fire.

    Do not let wires touch or rest against refrigerant 

    tubing, the compressor, or any moving parts 

    within the unit.  

    To avoid getting an electric shock, never touch 

    the electrical components soon after the power

    supply has been turned off. After turning off 

    the power, always wait 10 minutes or more 

    before you touch the electrical components.

10. 

11. 

13. 

Make sure that you do not cross your

       electrical wiring with your signal wiring.

       This may cause distortion and interference.

14. 

Connect the outdoor wires before connecting 

       the indoor wires.

Wiring

 WARNING

BEFORE PERFORMING ANY 
ELECTRICAL OR WIRING WORK, 
TURN OFF THE MAIN POWER TO 
THE SYSTEM. 

 

 

 

 

Summary of Contents for MOX330-18HFN1-MR0

Page 1: ...AIR CONDITIONERS Installation Manual IMPORTANT NOTE Read this manual carefully before installing or operating your new air conditioning unit Make sure to save this manual for future reference...

Page 2: ......

Page 3: ...ACCESSORIES 08 Table of Contents Safety Precautions 04 OUTDOOR UNIT INSTALLATION 09 WIRING 15 AIR EVACUATION 26 TEST RUN 28...

Page 4: ...substances near air conditioner Emitted gas may collect around the unit and cause explosion If the air conditioner is used together with burners or other heating devices thoroughly ventilate the room...

Page 5: ...t up catch fire or cause electrical shock The product must be properly grounded at the time of installation or electrical shock may occur TAKE NOTE OF FUSE SPECIFICATIONS The air conditioner s circuit...

Page 6: ...y use the included accessories parts and specified parts for installation Using non standard parts can cause water leakage electrical shock fire and can cause the unit to fail 5 6 Install the unit in...

Page 7: ...the relevant label on the unit itself or the Owner s Manual Product Fiche in the packaging of the outdoor unit European Union products only 2 Installation service maintenance and repair of this unit m...

Page 8: ...in fitting Gasket Accessories The air conditioning system comes with the following accessories Use all of the installation parts and accessories to install the air conditioner Improper installation ma...

Page 9: ...re or foreign substances do not enter the refrigerant circuit Contamination in the system may causepooroperatingcapacity highpressure intherefrigerationcycle explosionorinjury Ventilate the area immed...

Page 10: ...Liquid Gas Liquid Gas 3 8flare 3 8braze 3 4flare 3 4braze 3 8flare 3 8braze 3 4flare 3 4braze 3 8flare 3 8braze 7 8flare 7 8braze 3 8 3 4 3 8 3 4 3 8 7 8 18K 24K 60K 24K Hyper Heat 30K 36K 48K Liquid...

Page 11: ...gas and liquid piping to prevent water leakage Step 3 Flare pipe ends Proper flaring is essential to achieve an airtight seal 1 After removing burrs from cut pipe seal the ends with PVC tape to preven...

Page 12: ...nut use a torque wrench to tighten the flare nut according to the torque values in above table 8 Remove the flaring tool and flare form then inspect the end of the pipe for cracks and even flaring St...

Page 13: ...SIDERATIONS FOR EXTREME WEATHER If the unit is exposed to heavy wind Install unit so that air outlet fan is at a 90 angle to the direction of the wind If needed build a barrier in front of the unit to...

Page 14: ...dimensions below Before bolting the outdoor unit in place you must install the drain fitting at the bottom of the unit NOTE There are two different types of drain joints depending on the type of outd...

Page 15: ...ted bracket do the following unit mm inch Outdoor Unit Dimensions W mm inch mm inch mm inch mm inch mm inch H D Mounting Dimensions A B 805 317 31 11 16 554 21 13 16 330 13 511 20 1 8 12 1 2 946 403 3...

Page 16: ...tion of at least 1 8in 3mm must be incorporated in the fixed wiring The qualified technician must use an approved circuit breaker or switch 7 Only connect the unit to an individual branch circuit outl...

Page 17: ...the right cable size 3 Connect the u lugs to the terminals Match the wire colors labels with the labels on the terminal block Firmly screw the u lug of each wire to its corresponding terminal 2 Remov...

Page 18: ...t panel 4 Properly connect both the power supply and low voltage lines to the corresponding terminals on the terminal block 5 Ground the unit in accordance with local codes 6 Be sure to size each wire...

Page 19: ...ionality Note These methods are for use with a Midea outdoor unit and a third party indoor unit or cased coil and gas furnace S1 2 dip switch to be ON 24V connection DIP Switch setting as shown in the...

Page 20: ...U with 24V thermostat Wiring for 3H and 1C thermostat S4 2 DIP switch off Perform disconnection and short circuit to achieve partition control or dehumidification S4 1 DIP switch off Disconnect and sh...

Page 21: ...t S4 2 DIP switch off Perform disconnection and short circuit to achieve partition control or dehumidification S4 1 DIP switch off Disconnect and short circuit to realize heating segment R L G B W E C...

Page 22: ...tive the display will flash the active fault code Please refer to the fault code table located in the troubleshooting section of the Service manual for detailed fault code information Thisistheleastpr...

Page 23: ...IAMETER AWG LINE QUANTITY LINE QUANTITY LINE DIAMETER AWG LINE QUANTITY LINE DIAMETER AWG POWER outdoor INPUT CIRCUIT FUSE OUTDOOR UNIT POWER LINE THERMOSTAT SIGNAL LINE OUTDOOR INDOOR SIGNAL LINE OUT...

Page 24: ...then check that there has been no change in system pressure 9 If there is a significant change in system pressure check for leaks If there is no change in system pressure unscrew the cap from the pack...

Page 25: ...e The additional refrigerant to be charged can be calculated using the following formula Liquid Side Diameter Total pipe length standard pipe length x 24g 0 26oZ m ft Total pipe length standard pipe l...

Page 26: ...ioner to COOL mode 4 For the Indoor Unit a b c Double check to see if the room temperature is being registered correctly Check to see that the drainage system is unimpeded and draining smoothly Ensure...

Page 27: ......

Page 28: ...n and specifications are subject to change without prior notice for product improvement Consult with the sales agency or manufacturer for details Any updates to the manual will be uploaded to the serv...

Page 29: ...1 P19 2022 11 15...

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