Please read this manual carefully before installation and keep it for future reference. Owner & Installation Manual UNIVERSAL A-Coils ® Model: MDUCC150** 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: 10-25-21 Thank you for choosing MRCOOL.
Table Of Contents 1 Safety Precautions ....................... 2 2 Product Information .................... 3 2.1 Product Description ......................................... 4 2.2 Main Components ............................................ 4 2.3 Physical Dimensions ........................................ 5 2.4 Cooling Capacity Range................................... 5 3 Unit Installation ........................... 6 3.1 Pre-Installation Instructions ........................... 6 3.2 Location ........
® Safety Precautions MRCOOL Electric Heat Kit Safety Precautions Read Before Installation 1 Incorrect installation may cause serious damage or injury. The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION. This symbol indicates ignoring instructions may cause death or serious injury. WARNING This symbol indicates that ignoring instructions may cause moderate personal injury, damage to your unit, or other property.
Product Introduction To Our Customers; 2 Thank you for choosing a MRCOOL® home HVAC product. Please read this manual carefully before installation and operation of the Universal® Series A-Coils to ensure correct use and handling. In addition to the safety precautions in the previous section, please adhere to the following guidelines and note our exceptions to liability. 1.
Product Information 2.1 Product Description The Universal Series® A-Coil offers the perfect combination of superior product quality, operating efficiency, and value for money. The evaporator unit uses the environmentally friendly refrigerant R-410A, which is chlorine-free to help prevent damage to the ozone layer. 2.
Product Information 2.3 Physical Dimensions Units: inch(millimeter) Model MDUCC15024/ MDUCC15036 MDUCC15048/ MDUCC15060 Dimension W D H A B 17-1/2 (445) 21-1/4 (540) 23 (584) 15-7/8 (403) 19-3/8 (492) 24-1/2 (622) 21-1/4 (540) 28-1/2 (724) 22-7/8 (581) 19-3/8 (492) 2.4 Cooling Capacity Range Cooling capacity range as shown below: Model MDUCC15024 MDUCC15036 MDUCC15048 MDUCC15060 Page 5 Cooling capacity(ton) mrcool.com 2.0 3.0 4.0 5.
Unit Installation 3 WARNING The evaporator of the indoor unit is charged with refrigerant from the factory to maintain pressure. The cut-off valve can only be opened when the installation process and vacuuming procedure of the system have been completed. 3.1 Pre-Installation Instructions 3.1.1 Checking Product Received After receiving the product, please check it for damage that may have been caused during shipping. Shipping damage is the responsibility of the carrier.
Unit Installation 3.2 Location (cont.) When installing the coil take into consideration the length of the refrigerant piping and try to minimize the distance as much as possible. DO NOT install the air handler in a location that is either above or below the condenser that violates any instructions/requirements of the condenser in the system it is being installed in (consult the manuals/information provided with the condenser).
Unit Installation 3.4 Refrigerant Piping Connection 3.4.1 Specifications of Connection Pipe Model MDUCC15024/MDUCC15036 MDUCC15048/MDUCC15060 External diameter (inch) Gas pipe Liquid pipe 3/4 in 3/8 in 3.4.2 Piping Preperation NOTE: If you are installing your A-Coil with the optional MRCOOL® No-Vac® Quick-Connect® Line Set, please skip forward to the installation instructions for the line set on pg. 10. Once the line set installation is complete, continue to step 3.
Unit Installation Screw Connection Connect the pipe to the unit. Follow all instructions below. Use both a spanner and torque wrench. When connecting the tapered flare nut, first apply Polyolester oil (POE oil) on its inner and outer surface. Then, screw the first 3 or 4 threads by hand. Next, tighten the nut with the spanner and torque wrench. Confirm the tightening torque by referring to the following table. Keep pipe connection exposed to perform the leak test.
No-Vac® Quick Connect® Line Set* Installation INSTRUCTIONS FOR USE WITH NO-VAC™ QUICK CONNECT® LINE SET* SOLD SEPARATELY KINK RESISTANT, PRECHARGED, SIMPLE SECURE QUICK CONNECT, 100% CONNECTION GUARANTEE Please read and follow the instruc�ons and diagram below* : Connec�ons must be made exactly as specified to avoid system leaks and /or damage 1. Take out matching male connectors M1 and M2. 2.
Unit Installation Bending Line Set 1. Use your hands to bend the line set. Work carefully not to collapse the pipes during bending. 2. If the pipe is repeatedly bent or extended, it will become hard and difficult to manipulate. Avoid bending or extending the pipe more than 3 times. MINIMUM BEND RADIUS DO NOT bend the pipes in at an angle greater than 90°. DO NOT bend the pipe excessively, otherwise it will break. When bending connective refrigerant piping, the minimum bending radius is 4 in (10 cm).
Unit Installation 3.6 Ductwork WARNING DO NOT operate the unit without all of the ductwork completed and installed. DO NOT operate this product without all of the ductwork attached. This coil is designed for a complete supply and return ductwork system. Inadequate ductwork, that restricts airflow, can affect performance and can lead to compressor or heater failure. Ductwork should be constructed in a manner that limits restrictions and has the ability to maintain suitable air velocity.
4 Blower Speed Selection Proper air volume must be provided over the evaporator coil. Select a blower motor speed that will provide 300-450 CFM per 12,000 Btu/h of cooling capacity (wet coil). Refer to the Table 1 below for the recommended airflow volume. Table 1 Cabinet Width inch (millimeter) Recommended Volume (CFM) MDUCC15024/ MDUCC15036 17.5 (444.5) 800 17.5 (444.5) 1000 MDUCC15048/ MDUCC15060 24.5 (622.3) 1230 24.5 (622.3) 1510 Model Page Page13 1 mrcool.
Maintenance and Care 5 Regular checks of the system, maintenance, and care should only be performed by qualified, professional personnel in order to prolong the life of the unit. 5.1 Condensate Drain Pipe Regularly check to make sure the drain pipe is not clogged and condensate drains smoothly. A clogged condensate pipe can cause the drain pan to overflow with condensate which can lead to property damage. 5.2 Checklist Before Seasonal Use . Check the inlet and outlet of indoor units for clogs. .
After-Sales Service 6 In the event you have any issues with the quality of the unit you purchased, or just have an inquiry, please contact the after-sales service agency designated by MRCOOL®. **Warranty claims should meet the following requirements:** . Installation, initial startup, and first run of the unit should only be performed by professional personnel from a MRCOOL® appointed service center.
UNIVERSAL A-Coils
