Please read this manual carefully before installation and keep it for future reference. Installation & Owner’s Manual ® DIY Multi-Zone 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.
Contents ! Safety Precautions Warnings .................................................................................................................................. Cautions ................................................................................................................................... 1 Parts Overview 2 Operating Instructions Parts Diagram ......................................................................................................................... Display Window ..
Contents 5 Indoor Unit Installation ...........17 1. Selecting an installation location .........17 18 18 4. Prepare refrigerant piping ....................20 5. Mount indoor unit ..................................20 6 Outdoor Unit Installation ...... 21 1. Selecting an installation location ......21 2. Install drain joint .................................22 .23 7 Refrigerant Piping Connections......................25 1. Prepare Exterior Wall Hole ............................................... 25 2.
Safety Precautions Safety Precautions Read Before Using ! Incorrect usage may cause serious damage or injury. The symbols below are used throughout this manual to indicate instructions that should . be followed closely or actions that should be avoided to prevent death, injury, and/or property damage. This symbol indicates ignoring instructions may cause death or serious injury.
Safety Precautions 7. 8 . All wiring must be properly arranged to ensure that the control board cover can close properly. If the control board cover is not closed properly, it can lead to corrosion, which can cause the connection points on the terminal to overheat, which can result in fire and/or electrical shock. 9.
Parts Overview Safety Precautions 1 NOTE: The installation must be performed in accordance with the requirement of local and national standards. Both power cable and signal cable should be protected by the conduit. Indoor Unit (Interior/Air Handler) Front Panel Electrical Access Air inlet rear Air Filter Wall Mounting Plate Air outlet bottom Quick Connect® Line Set (refrigerant pipe) Pat. https://mrcool.
Overview - Diagram Indoor unit 1. 2. 3. 4. 5. 6. 7. 8. 9. Panel frame Rear air intake grill Front panel Air purifying filter & Air filter (behind) Horizontal louver LCD display window Vertical louver Manual control button (behind front panel) Remote controller holder Outdoor unit 10. Drain hose, refrigerant connecting pipe 11. Stop valve 12. Fan hood NOTE ON INSTALLATION OF A DIY MULTI-ZONE SYSTEM Please read this instruction manual fully before you attempt to install this system.
Overview - Display 2 ° 3 ECO 4 Fig. 1.2 Display (on front panel of indoor unit) 1. Digital Display: Displays the Temperature Setting when the air conditioner is operational. Displays the Room Temperature when in FAN mode. Displays the self-diagnostic codes. Displays “ ON ” for three seconds when the Timer is ON and/or Fresh, Swing, Turbo, or Silence feature is activated.
Accessories The listing below shows the accessories and parts (these may vary depending on purchase & options). Use all of the installation parts and accessories to install the system. Improper installation may result in water leakage, electrical shock, fire, and/or equipment failure. LOOKS LIKE... 1 Mounting plate 5 Mounting plate screw 5 Remote control 1 Fixing screw for remote 2 Optional Parts ST2.
Accessories LOOKS LIKE... Please read this manual carefully before installation and keep it for future reference. Installation & Owner’s Manual Owner’s Manual 1 E-Star™ DIY Series For more details visit www.MrCool.com Please read this manual carefully before installation and keep it for future reference. Remote Control Manual Remote Control User Manual 1 For more details visit www.MrCool.
Safety Precautions Operating Instructions Cooling Operation Room Temperature Outdoor Temperature 2 Heating Operation Drying Operation 63°F~90°F °C~32°C) 32°F~86°F (0°C~30°C) 50°F~90°F °C) -13°F~122°F (-25°C~50°C) -13°F~86°F -25 C~30°C) F 32° F~ (0°C~50°C) NOTE: 1. 2. Manual Operation Units are equipped with a button to run emergency operation mode. This button is used for manual operation in case the remote control fails, or maintenance is necessary.
Operating Instructions Adjust Vertical Airflow (Up/Down) using Vertical Louver (Fig 2.2): This function is performed by using the remote control, while the unit is operating. The Vertical louver can move in small increments for each press, or continuously swing up and down automatically. Please refer to the “Remote Control User Manual” for further details.
Operating Instructions Basic Operation Modes: SLEEP operation Auto Operation: 8 hours timer OFF Set Temperature hour SLEEP Operation: hour SLEEP Operation While Cooling SLEEP operation hours before SLEEP DRYING Operation: 8 hours timer OFF LOW. Set Temperature HEATING Operation: hour hour SLEEP Operation While Heating supplement heating with other appliances.
Operating Instructions Operation Mode Selection While two or more indoor units are operating simultaneously, make sure the modes selected on each of the units do not conflict with one another. The HEAT mode claims precedence over all of the other modes. If the unit initially started to operate in HEAT mode, the other units can only operate in HEAT mode. For example: If the unit initially started to operate under COOL or FAN mode, the other units can operate under any mode except HEAT.
Operating Instructions Care and Maintenance 3 CAUTION Power supply must be disconnected before attempting any kind of cleaning or service. Before performing maintenance, turn the power off to the unit and then disconnect the power to the circuit at the breaker. Failure to do this could cause electrical shock. DO NOT use a chemically treated cloth or duster to clean the unit. DO NOT use benzene, thinner, polishing powder, or similar solvents for cleaning.
Care and Maintenance 3 3. 4. 5. NOT use heat as it could melt the filter. DO 4 . 7. lowering the bottom into place. 8. Removal Preparation for Extended non-Operation: 5 1. 2. 3. Turn off the unit. Then, turn off the power to the circuit at the breaker. The unit should be the only appliance on this circuit. 4. 6 5. The outdoor unit also requires periodic maintenance. However, it is highly recommended you contact a qualified service professional to perform this.
4 Installation Diagram More than 4.7 in (12 cm) 4 More than 4.7 in (12 cm) 3 2 Air-break Switch Mounting screw ST3.9 × 25-C-H More than 6 in (15 cm) 1 Installation plate More than 4.
Installation Summary - Indoor Unit Indoor Unit Installation 5 DO NOT install unit in the following locations: Installation Instructions – Indoor Unit Near any source of heat, steam, or combustible gas PRIOR TO INSTALLATION: Before installing the indoor unit, refer to the label on the product box to make sure that the model numbers of the indoor unit and the outdoor unit match.
Indoor Unit Installation Refer to Fig. 5.2 below to ensure proper distance from walls, ceiling, and floor when mounting unit: Minimum Ceiling Clearance 5.9 in (15 cm) Minimum Side Clearance 4.75 in (12 cm) Minimum Side Clearance 4.75 in (12 cm) *For Ceilings GREATER than 9 ft., recommended distance from floor 90.55 in (230 cm) *For Ceilings LESS than 9 ft., recommended distance from floor 78.55 in (200 cm) Fig. 5.1 1. 2.
Indoor Unit Installation MOUNTING PLATE DIMENSIONS 16.8 in (426 mm) 9.15 in (232 mm) 7.55 in (192 mm) In order to ensure that you have ample room to mount the indoor unit, the diagrams to the right 5.05 in (128 mm) with the following dimensions: • Height & Width of mounting plate • Height & Width of indoor unit relative to plate • Recommended position of wall hole • Relative distances between screw/mounting holes Outline of indoor unit when mounted to plate 1.7 in (43 mm) 11.7 in (297 mm) 1.
Indoor Unit Installation Step 4: Prepare indoor unit refrigerant piping Step 5: Mount the Indoor Unit The piping of the indoor unit is attached to the back of the unit towards the bottom. It will be covered with insulation, and there will also be a drain pipe with these. This piping will need to be bent and prepared before it can be fed through the wall hole. In the following steps the indoor unit will now be mounted to the wall bracket and the piping and wires will be fed through the wall hole. 1.
Indoor Unit Installation Outdoor Unit Installation Minimum Clearance above unit: 24 in above (60 cm) Minimum Clearanc e in front o f the unit : 79 in (20 0 cm) 6 Minimum Clearance between the back of the unit and wall: **Ground Installed: 12 in (30 cm) **Bracket Installed: 6 in (15 cm) Minimum Clearance on the left side of unit: 12 in (30 cm) 12in (30cm) 24in (60cm) Min imum Clearance onoright n the righ t side of the unit: 24 in (60 cm Fig. 6.
Outdoor Unit Installation If the drain joint comes with a rubber seal (see Fig. 6.4 -A), do the following: SPECIAL CONSIDERATIONS FOR EXTREME WEATHER 1. angle to the direction of the wind. If needed, build a barrier in front of the unit to protect it from extremely heavy winds. Ensure the wind barrier does not block Fig. 6.2 and Fig. 6.3 below. 2. 3. the unit. facing the front of the unit. 4. Strong wind If the drain joint does NOT come with a rubber seal (see Fig. 6.
Outdoor Unit Installation TOP VIEW FRONT VIEW A Air Inlet D H Air Inlet B Air Outlet W Fig. 6.5 UNIT MOUNTING DIMENSIONS sizes and the distance between theirmounting feet. Prepare the installation base of the unit according to the dimensions in the table below, using the illustrations of the unit above (Fig 6.5) as a reference/guide to correspond with the table.
Outdoor Unit Installation If you are installing the unit on a wall-mounted bracket, follow these steps: 1. Before installing a wall-mounted unit, make sure that the wall meets these guidelines: . 2. 3. 4. . 5. the 7. 8. The wall is made of solid brick, concrete, or a similarly strong material. The wall must be able to support at least 4 times the weight of the unit. NOTE: If allowed, you can install the wall-mounted unit with rubber gaskets to reduce vibration and noise.
7 Refrigerant Piping Connection Step 1: Prepare exterior wall hole Before the refrigerant piping can be installed and connected to the indoor and outdoor units, some additional steps are required to prepare the exterior. 1. Install finishing ring/cap to exterior portion of the wall hole. Step 2: Unwind Quick Connect® Line Set to necessary length 1. Use your hands to slowly unwind the copper piping of one end of the Quick Connect® Line Set. The end you unwind will connect to the indoor unit piping.
Refrigerant Piping Connection Step 3: Connect Line Set to Indoor Unit 3.1 Tools needed NOTE: Depending on the capacity rating of your unit, (12K, 18K, 24K, 36K) the wrench sizes needed will vary, refer to the table below (the unit uses metric sizes, the standard sizes listed are approximations). Based on the availability of wrenches in some of the sizes needed, the recommended method is to use crescent (adjustable-type) wrenches that can be adjusted to fit the size each step requires. Pat. https://mrcool.
Refrigerant Piping Connection TORQUE REQUIREMENTS 1. 2. 3. NOTE: Torque ratings in the table below are to be used if you have access to an HVAC torque wrench. These are available for purchase from online retailers. However, it is possible to complete installation of refrigerant line sets with conventional open-ended/crescent wrenches. It is imperative, however, that you not overtighten the connector, and that once the lines have been fully connected, you follow the steps to check for leaks.
Refrigerant Piping Connection IMPORTANT The connection ports on the outdoor condenser are labelled A,B,C,D, etc. The capacities of the air handlers you use will determine which ports they should be connected to. The largest capacity air handler should be connected to the “A” port. Then, the next largest capacity air handler should be connected to the “B” port and so on.
Refrigerant Piping Connection TORQUE REQUIREMENTS Excessive force can break the nut or damage the refrigerant piping. You must not exceed torque requirements shown in the table below. 2. 3. versus a HVAC torque wrench) and that a socket style wrench cannot be used here. NOTE: Torque ratings in the table below are to be used if you have access to an HVAC torque wrench. These are available for purchase from online retailers.
Refrigerant Piping Connection Step 5: Opening the refrigerant valves of the outdoor unit CAUTION All of these steps must be completed BEFORE powering the unit, or else it could damage it. 1. Using the images below as a guide, remove the cover on the top valve, using a 19 mm open-ended wrench or a crescent (adjustable-type) wrench. Then, insert a 5 mm Allen key and open the valve by turning it counter-clockwise as far as it will go. DO NOT force it. The valve is now open.
Refrigerant Piping Connection 4. After completing steps 1-3, you will now need to check all of the piping connections (at indoor unit and outdoor unit) for leaks. You can do this by using leak detection spray, or applying a soapy water solution (liquid detergent/water mixture) to the connection via a spray bottle or brush. If any bubbles begin to form, it is an indication there is a leak and the connection needs to be retightened. Tighten the connection and recheck it for leaks.
Refrigerant Piping Connection Step 6: Connect Drain Pipe CORRECT Make sure there are NO kinks or dents in the hose to ensure proper drainage. In this step you will connect the drain hose extension to the drain hose exiting from the indoor unit piping 1. Securely connect the drain hose extension to the drain piping from the indoor unit. Fig. 7.2a NOT CORRECT KINKS in the drain hose will create water traps. 2. Using example Fig. 7.2a as a guide, make sure your drain pipe is run in a similar manner.
Refrigerant Piping Connection Step 7: Wrap piping connections In this step you will insulate the exposed line connections coming from the indoor air handler with the supplied sound deadening pads and insulation. Then wrap the line set from the outdoor unit to the exterior wall hole with the supplied Non-Adhesive U.V. Tape.
Refrigerant Piping Connection wrap piping upward to the exterior wall hole Quick Connect® connections Signal Cable Drainage Pipe Quick Connect® Line Set (refrigerant pipe) Pat. https://mrcool.com/mrcool-patents/ wrap the Quick Connect® connections with the black sound deadening pads. wrap from bottom to top to ensure tape overlap will shed rain/water coil, then wrap bundled excess of line set Outdoor Unit (Exterior / Condenser) mrcool.
8 Electrical Connections BEFORE PERFORMING ELECTRICAL WORK, READ THESE REGULATIONS 1. All wiring must comply with local and national electrical codes. 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.
Electrical Connections Connect signal and power cables The outside unit’s terminal block is protected by an electrical wiring cover on the side of the unit. A comprehensive wiring diagram is printed on the inside of the wiring cover (See Fig. 8.1). Cover USE THE RIGHT CABLE • See table below for gauge requirements depending on model Outdoor Unit Wiring Diagram is located on the inside of the wire cover on the outdoor unit.
Electrical Connections CAUTION NOTE: ELECTRICAL WORK MUST BE COMPLETED BY A QUALIFIED TECHNICIAN. Connect the connective cables to the terminals, as identified below, with their matching numbers on the terminal block of the indoor and outdoor units. For example, in the US models shown in the following diagram, Terminal L1(A) of the outdoor unit must connect with terminal 1 on the indoor unit. Continue to match zone to zone for any additional connections. See wiring diagrams below (Fig. 8.2 & Fig. 8.
Refrigerant Piping Connection 89 WARNING – RISK OF ELECTRIC SHOCK Manual. BEFORE TEST RUN ALL WIRING MUST BE INSTALLED BY A LICENSED ELECTRICIAN AND COMPLY WITH LOCAL, STATE, AND NATIONAL ELECTRICAL CODES. There are two different methods to check for gaseous leaks. NOTE: DURING TEST RUN Soap and Water Method Using a soft brush or spray bottle, apply a soapy water solution to all of the pipe connection points of the indoor and outdoor units, watching to see if any bubbles form.
Refrigerant Piping Connection Test Run 10 Before Test Run PASS/FAIL Only perform test run after you have completed the following steps: – • the electrical system is safe and operating properly • No electrical leakage Unit is properly grounded – not leaking properly covered • pressure) valves are fully open Indoor and outdoor units are solidly installed Wall Penetration Sleeve is packed airtight Test Run Instructions You should perform the 30 minutes.
Test Run DOUBLE-CHECK PIPE CONNECTIONS During operation, the pressure of the refrigerant circuit/piping will increase. This may reveal leaks that were not present during your initial leak check. Take time during the Test Run to double-check that all refrigerant pipe connection points do not have leaks. Refer to the Gas Leak Check section for instructions. 5. a. Manual Control Button operating temperature. b. Fig. 9.
11 The following events may occur during normal operation, and may not indicate a malfunction. Symptom Cause Operation is delayed after restart The protection circuit will prevent the compressor from operating for roughly 3 minutes, after a sudden ON-OFF operation of the power supply, in order to prevent a blowout of the fuse.
Symptom Diagnostic -- Is there a power failure? Unit will not operate -- Is the timer operating? batteries used in the remote controller exhausted? batteries used in the remote controller installed properly? the temperature and mode settings correct? Poor cooling or windows or doors left opened? -- Is direct or strong sunlight shining into the room in cooling operation? re other heat generating devices (such as a computers operating), or too many people in the room, during cooling operation? become
Indoor Unit Error Display O(light) Operation LED X(off) (flash) Timer LED Display LED STATUS 1 time X E0 Indoor unit EEPROM parameter error 2 times X E1 Indoor / outdoor units communication error ** 3 times X E2 Zero-crossing signal detection error 4 times X E3/E88 5 times X E4 Indoor room temperature sensor T1 open circuit or short circuit 6 times X E5 Evaporator coil temperature sensor T2 open circuit or short circuit 7 times X EC Refrigerant leakage detection 2 times O
Automatic Wiring/Piping Correction Function NOTE The function for the automatic wiring/piping correction illustrated below is intended for use by a licensed electrical technician only. Newer models now feature automatic correction of wiring/piping errors. Press the"check switch" on the PCB board of the outdoor unit for 5 seconds until the LED displays"CE.” This indicates that this function is working.
Refrigerant Piping Connection EU Disposal Guidelines 12 This appliance contains refrigerant and other potentially hazardous materials. When disposing of this appliance, the law requires special collection and treatment. DO NOT dispose of this product as household waste or unsorted municipal waste. When disposing of this appliance, you have the following options: • Dispose of the appliance at a designated municipal electronic waste collection facility.
DIY Multi-Zone ® Consult with the sales agency or manufacturer for details.