MrCool MWUC 5 Series Installation & Owner's Manual
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MrCool MWUC 5 Series Installation & Owner's Manual

MrCool MWUC 5 Series Installation & Owner's Manual

U-shaped window unit
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Please read this manual carefully before installation and keep it for future reference.
Installation & Owner's
Manual
U-Shaped Window Unit
Air Conditioner
Model: MWUC**5
Due to updates and constantly improving performance, the information and instructions
within this manual are subject to change without notice. Please visit
www.mrcool.com/documentation to ensure you have the latest version of this manual.
Version Date: 8-16-21
Please keep this manual where the operator can easily find it. Inside, you
will find helpful hints on how to use and maintain your unit properly.

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Summary of Contents for MrCool MWUC 5 Series

  • Page 1 Due to updates and constantly improving performance, the information and instructions within this manual are subject to change without notice. Please visit www.mrcool.com/documentation to ensure you have the latest version of this manual. Version Date: 8-16-21 Please keep this manual where the operator can easily find it. Inside, you...

  • Page 2: Table Of Contents

    The relative humidity of the room should be less than 80%. If the unit is operated in an environment with a relative humidity above 80%, there will be condensed water on surface of the unit. Page 1 mrcool.com...

  • Page 3: Safety Precautions

    DO NOT allow water to enter the electric parts of the unit, as this could cause electric shock and/or failure of the unit. DO NOT open the unit while it is operating, as this could cause electric shock. mrcool.com Page 2...
  • Page 4 Aluminum house wiring may present special problems, please consult a qualified electrician. DO NOT operate the unit without the side protective cover in place. Operating the unit without this, could result in mechanical failure within the unit. DO NOT use an extension cord or adapter plug. Page 3 mrcool.com...

  • Page 5: Cautions

    • DO NOT operate your air conditioner in a room where it could be exposed to water, such as a bathroom or laundry room. Contact the authorized service technician for repair or maintenance of this unit. • mrcool.com Page 4...

  • Page 6: Warning Regarding Current Detection Device

    fire hazard. DO NOT remove any prong from the power cord. Grounding type wall receptacle Power supply cord with Do not, under any circumstances, cut, 3-prong grounding plug remove, or bypass the grounding prong. and current detection device. Page 5 mrcool.com...

  • Page 7: Warnings (For Using R290/R32 Refrigerant Only)

    This symbol shows that the operation manual should be read carefully. This symbol shows that service personnel should be handling this CAUTION equipment while referencing the installation manual. This symbol shows that information is available in the operating CAUTION or installation manual. mrcool.com Page 6...
  • Page 8 The manufacturer’s maintenance and service guidelines should be followed at all times. If in doubt, please contact the manufacturer’s technical department for assistance. The following checks should be performed to installations using flammable refrigerants: Page 7 mrcool.com...
  • Page 9 Replacement parts should be in accordance with the manufacturer’s specifications. NOTE: The use of silicone sealant may inhibit the effectiveness of some types of leak detection equipment. Intrinsically safe components do not have to be isolated prior to working on them. mrcool.com Page 8...
  • Page 10 The refrigerant should be recovered into the correct recovery cylinders. The system should be flushed with OFN to render the unit safe. This process may need to be repeated several times. DO NOT use compressed air or oxygen for this task. Page 9 mrcool.com...
  • Page 11 7.) Start the recovery machine and ensure it is operated in accordance with the manufacturer’s instructions. 8.) DO NOT overfill the cylinders (no more than 80% volume liquid charge). 9.) DO NOT exceed the maximum working pressure of the cylinder, not even temporarily. mrcool.com Page 10...
  • Page 12 The evacuation process should be carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor body should be employed to accelerate this process. When oil is drained from a system, it should be done so safely. Page 11 mrcool.com...

  • Page 13: Installation Instructions

    NOTE: The unit you purchased will look similar to one of the images above. Please note that all of the illustrations in this manual are for explanation purposes only. The air conditioner you have may be slightly different in terms of size and shape. mrcool.com Page 12...
  • Page 14 1/8” drill bit Save the carton/box the air conditioner came in as well as these Installation Instructions for future reference. The carton/box is the best Proper PPE way to store the unit during winter, or when not in use. Page 13 mrcool.com...
  • Page 15 Next, adjust the arms of the bracket to the measured width of the windowsill by pressing the spring-loaded push pins to adjust the arms inward or outward. NOTE: the bracket will be offset to the left when installed. mrcool.com Page 14...
  • Page 16 A1. Depending on the type of window you plan to install the unit in (wooden or vinyl-clad), the bracket will sit differently in the base of the windowsill. Please refer to Fig. 5. Vinyl Lip OUTSIDE INSIDE OUTSIDE INSIDE Wooden Windows Vinyl-Clad Windows Fig. 5 Page 15 mrcool.com...
  • Page 17 Main Supports of the bracket and tilted slightly adjust the Support Arms that it is downward. tilted slightly downward toward the outside of the window. This will allow for proper condensate drainage of the unit. Please refer to Fig. 8. Fig. 8 mrcool.com Page 16...
  • Page 18 Fig. 10 E. If necessary, cover the holes on the front of the bracket with the Bracket Sealing Foam, as shown in Fig. 11. Cover holes with Cover holes with Bracket Sealing Foam Bracket Sealing Foam Fig. 11 Page 17 mrcool.com...
  • Page 19 Keep the window partially inserted into the the window slot to help support the air conditioner during the installation. Then, fold down the Side Arm Hinges on both sides of the unit. Please refer to the Fig. 14 & Fig. 15 below. Fig. 15 Fig. 14 mrcool.com Page 18...
  • Page 20 Side Arm. Please refer to the images to the right. Add 1/4 in (6.35 mm) to this measurement and cut the Side Arm Foam to this length. Please refer to Fig. 17. Fig. 17 Page 19 mrcool.com...
  • Page 21 Arm Foam is flush with the top of the hinge. Please refer to Fig. 20 below. Then, repeat these steps for installing the Side Arm Foam on the other side of the unit. Front Fig. 20 Side View of Side Arm Foam mrcool.com Page 20...
  • Page 22 NOTE: Fig. 22 & Fig. 23 below are to show how the Anti-Tip Bracket is to be installed in the window track. Note: the Side Arm Foam installed in the previous steps is not shown in this illustration. Top view Fig. 22 Anti-Tip Bracket Installed in Window Track Opening Fig. 23 Page 21 mrcool.com...
  • Page 23 (12.7 mm) as shown in Fig. 25. Fig. 25 FOAM SEAL H. Cut the Window Sash Foam and insert it in the space between the upper and lower sashes, as shown in Fig. 26. Window Sash Foam Window Sash Foam Fig. 26 mrcool.com Page 22...
  • Page 24 Fasten secure the support bracket to the with nails or screws. wood piece using the provided Type A 1” screws (25.4 mm). Refer back to the OUTSIDE INSIDE Open Window Bracket installation step. Fig. 28 Page 23 mrcool.com...

  • Page 25: Sounds During Normal Operation

    Model Number MWUC08T115 MWUC10T115 MWUC12T115 *per ISO 3744 at low fan speed NOTE: All the illustrations in this manual are for explanation purpose only. The actual shape and size of your air conditioner may be slightly different. mrcool.com Page 24...

  • Page 26: Air Conditioner Operation & Features

    The relative humidity of the room should be less than 80%. If the unit is operated in an environment with a relative humidity above 80%, there will be condensed water on surface of the unit. Page 25 mrcool.com...
  • Page 27 If the unit is off, there is no display. • Turning the unit ON or OFF at any time, or adjusting the timer setting to 0.0, will cancel the Auto Start/Stop timed program. mrcool.com Page 26...
  • Page 28 Press Fan button to select the desired fan speed. The fan speed can be adjusted in four modes; Auto, Low, Med or High. Each time the button is pressed, the fan speed mode is adjusted. On some models, the fan speed cannot be adjusted. Page 27 mrcool.com...
  • Page 29 • The LED display is capable of displaying temperature in Fahrenheit or Celsius. To convert from one reading to the other, press and hold the Up and Down buttons together for 3 seconds. mrcool.com Page 28...

  • Page 30: Care & Cleaning

    filter is thoroughly dry before replacing. Instead of washing, you could also vacuum the filter clean. NOTE: Never use hot water, above 104°F (40°C), to clean the air filter. Never attempt to operate the unit without the air filter installed. Page 29 mrcool.com...

  • Page 31: Troubleshooting Tips

    Air movement sound- Normal sounds of unit. If too loud, select a slower FAN setting. Noise when unit is cooling If it is a window vibration, it could be the result of a poor installation. Refer to installation instructions, or check with installer. mrcool.com Page 30...
  • Page 32 Set temperature too low. Increase set temperature Noise when unit A slight thumping noise may occur within 30 seconds of the unit being turned starts on due to the compressor starting (For Inverter type). This is normal. Page 31 mrcool.com...
  • Page 33 U-Shaped Window Unit Air Conditioner Model: MWUC**5 The design and specifications of this product and/or manual are subject to change without prior notice. Consult with the sales agency or manufacturer for details.

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